MECHANICAL PENCIL

... [Problem] To provide a mechanical pencil having a cushion spring producing a writing sensation superior to that of the prior art. [Solution] A mechanical pencil according to an embodiment comprises a writing core, a chuck unit for holding the writing core, and a cushion spring for elastically supporting the chuck unit such that the same can be moved back by writing pressure. The output of the cushion spring in relation to a cushion stroke is non-linear. The spring constant slope in an area where the cushion stroke is relatively small is smaller than the spring constant slope in an area where the cushion stroke is relatively large.

WRITING TOOL

Provided is a writing tool that can reduce a shock transmitted from the outside to a writing lead. The writing tool is provided with a chuck that holds the writing lead in a sandwiching manner, wherein the chuck has a first chuck claw that is brought into point contact or line contact with the writing lead and presses the writing lead so as to load a first contact stress on the writing lead, and has a second chuck claw that presses the writing lead so as to load a second contact stress smaller than the first contact stress on the writing lead, and the first contact stress loaded on the writing lead by the first chuck claw is configured such that a contact part of the writing lead on which the first contact stress has been loaded is broken to absorb a prescribed shock when the prescribed shock is applied to the writing lead.

MECHANICAL PENCIL

... [Problem] To provide a mechanical pencil comprising a cushion spring by which a plurality of cushion action regions that exhibit cushion action with different spring constants are connected without jumping. [Solution] A mechanical pencil according to one embodiment comprises: a shaft; a clutching mechanism that is housed within the shaft and is capable of holding and propelling a lead; and first and second cushion springs that elastically support the clutching mechanism in the axial direction with respect to the shaft. The first and second cushion springs are combined to form a first cushion action region that has a first spring constant and a second cushion action region that has a second spring constant. The first and second cushion action regions are connected without jumping.

KNOCK-TYPE PROPELLING CONTAINER

A knock-type propelling container includes a body storing a medium therein and having a tip end opening for allowing the medium to be propelled therefrom, a propelling member slidably arranged in the body and capable of propelling the medium toward the opening, the propelling member being provided with a forward/rearward extending prolongation portion having engaging-stop portions formed at fixed intervals in a forward/rearward direction, a knock member provided at the body so as to be reciprocably moved relative to the body, a thrusting member arranged in the body so as to be moved forward by knocking the knock member, and having an engagement portion engageable with the engaging-stop portions, and a detent member fixedly arranged in the body and engageable with the propelling member. 1. A knock-type propelling container comprising:a body storing a medium therein and having a tip end opening for allowing the medium to be propelled therefrom;a propelling member arranged in the body so as to be slidable in a forward/rearward direction of the body and capable of propelling the medium toward the tip end opening;the propelling member being provided with a forward/rearward extending prolongation portion which has a series of engaging-stop portions formed at fixed intervals in the forward/rearward direction;a knock member provided at the body so as to be reciprocably moved with respect to the body;a thrusting member arranged in the body and always biased in a rearward direction;the thrusting member being adapted to be moved forward by knocking the knock member and provided with an engagement portion engageable with the engaging-stop portions; anda detent member fixedly arranged in the body and engageable with the engaging-stop portions;the portion being configured in such a manner that the engaging-stop portions thereof slip forward relative to the detent member but do not slip rearward relative to the detent member and are maintained in an engagement state with the ...

WRITING INSTRUMENT

A writing instrument is disclosed which includes a cylindrical barrel and an end cover having a robust structure and attached to the cylindrical barrel. The end cover comprises a cylindrical base attached to a rear end portion of the cylindrical barrel, a cover body fitted around an outer peripheral surface of the cylindrical base, a stopper ring fitted around an outer peripheral surface of at least a fitted portion between the cylindrical base and the cover body, and a cooperation structure for facilitating enhancing of holding force which is exerted on the cover body by the cylindrical base and the stopper ring. 1. A writing instrument comprising a cylindrical barrel and an end cover attached to a rear end portion of the cylindrical barrel , wherein the end cover comprises:a cylindrical base mounted around the rear end portion of the cylindrical barrel;a cover body fitted around an outer peripheral surface of a rear end portion of the cylindrical base;a stopper ring fitted around an outer peripheral surface of at least fitted portion between the cylindrical base and the cover body; anda cooperation structure for facilitating enhancing of holding force which is exerted on the cover body by the cylindrical base and the stopper ring, so that the cylindrical base, the cover body, and the stopper ring are joined together to form a joined unit.2. A writing instrument according to claim 1 , wherein the cooperation structure comprises:an outward facing flange protruding radially outward from a front end portion of the cover body;a first step portion extending radially outward from an outer peripheral surface of a substantially middle portion of the cylindrical base in an axial direction of the cylindrical base;an engagement portion protruding radially inward from a rear end portion of the stopper ring; anda second step portion extending radially outward from an outer peripheral surface of a portion of the cylindrical base in front of the first step portion;the cover body ...

Stick-shaped Material Propelling Container

A stick-shaped material propelling container is disclosed which comprises a barrel having a spiral groove formed in its inner peripheral surface, a guide tube having slits and inserted in the barrel so as to be rotatable relative to the barrel and axially unmovable, and a stick-shaped material holding member provided with side plates and protrusions and slidably inserted in the tube with the protrusions being engaged with the grooves through the slits. The groove has a structure for causing rear end portions of the side plates to come closer to each other and for causing tip end portions of the side plates to be separated radially outward from each other according to the mutually approaching movements of the rear end portions of the side plates, when the protrusions are slid along a tip end portion of the groove according to relative rotation of the barrel and the tube. 1. A stick-shaped material propelling container comprising:an outer barrel opened at least at a tip end portion thereof and having a spiral groove formed in an inner peripheral surface thereof;a guide tube opened at least at a tip end portion thereof and having a peripheral wall and a plurality of axially extending guide slits formed in the peripheral wall;the guide tube being inserted in the outer barrel so as to be rotatable relative to the outer barrel and unmovable in an axial direction of the outer barrel; anda holding member for holding a stick-shaped material;the holding member comprising a bottom plate, on which the stick-shaped material is carried, a plurality of side plates for interposingly holding the stick-shaped material carried on the bottom plate, the plurality of side plates extending in a forward/rearward direction from side edge regions of the bottom plate, and engaging protrusions protruding laterally from rear end portions of the side plates with respect to the bottom plate;the holding member being slidably inserted in the guide tube in a state where the side plates or the ...

Mechanical Pencil

A mechanical pencil is provided including a tubular shaft, a chuck unit movably arranged in the shaft, a front rotary element adapted to be moved rearward as the unit is moved rearward, a rear rotary element adapted to be moved rearward as the front rotary element is moved rearward, a conversion means for causing the rear rotary element to rotate in a normal rotational direction as the rear rotary element is moved rearward and allowing the rear rotary element to rotate in a reverse rotational direction as the rear rotary element is moved forward, a normal directional rotation transmitting means for allowing the front rotary element to be rotated in the normal rotational direction and the rear rotary element to be idly rotated, and a reverse directional rotation restricting mechanism allowing the normal directional rotation of the front rotary element but preventing the reverse directional rotation of the front rotary element.

WRITING INSTRUMENT AND METHOD FOR MANUFACTURING WRITING INSTRUMENT

A method for manufacturing a writing instrument includes inject molding a cushion spring of the writing instrument to form the cushion spring as one piece, and axially pushing out the cushion spring from a molding die set. The cushion spring elastically supports a tip of the writing instrument in an axial direction to a barrel of the writing instrument. The forming of the cushion spring includes forming a plurality of apertures in the cushion spring, one of the apertures being relatively arranged with another one of the apertures by rotations of angles at 90 degrees about the axial direction on an outer peripheral surface thereof, and forming a plurality of displacement regulating protrusions, one of the protrusions being relatively arranged with another one of the protrusions by rotations of angles at 90 degrees about the axial direction. 1. A method for manufacturing a writing instrument , the method including:inject molding a cushion spring of the writing instrument to form the cushion spring as one piece; andaxially pushing out the cushion spring from a molding die set,wherein the cushion spring elastically supports a tip of the writing instrument in an axial direction to a barrel of the writing instrument, forming a plurality of apertures in the cushion spring, one of the apertures being relatively arranged with another one of the apertures by rotations of angles at 90 degrees about the axial direction on an outer peripheral surface thereof; and', 'forming a plurality of displacement regulating protrusions, one of the protrusions being relatively arranged with another one of the protrusions by rotations of angles at 90 degrees about the axial direction, such that the one of the protrusions and the another one of the protrusions protrude and extend into the apertures along the axial direction, and, 'wherein the forming of the cushion spring includeswherein the protrusions prevent the cushion spring from compression beyond a prescribed length.2. The method ...

Mechanical pencil

A mechanical pencil includes a writing lead, a chuck that chucks the writing lead and feeds the writing lead forward, and a shaft tube for housing the writing lead and the chuck. When a click operation for feeding the chuck forward is performed, a jet stream flowing forward is generated inside the shaft tube.

Writing instrument

A writing instrument according to an embodiment of the invention including, a chuck that chucks a writing lead, wherein the chuck includes a first chuck pawl which comes into point contact or line contact with the writing lead to press the writing lead so as to apply first contact stress to the writing lead; and a second chuck pawl which presses the writing lead so as to apply, to the writing lead, second contact stress that is lower than the first contact stress, and the first contact stress is configured such that, when a prescribed impact is applied to the writing lead, a contact portion of the writing lead subjected to the first contact stress fractures and absorbs the prescribed impact.

Writing instrument and method for manufacturing writing instrument

A writing instrument includes a barrel, a tip, and a cushion spring that elastically supports the tip in the axial direction to the barrel. The cushion spring is formed as one piece by injection molding, the cushion spring includes an aperture on its outer peripheral surface, and a displacement regulating protrusion that protrudes and extends into the aperture along the axial direction. The protrusion prevents the cushion spring from compression beyond a prescribed length.

MECHANICAL PENCIL

A mechanical pencil according to an embodiment includes a barrel; a chuck mechanism that is housed inside the barrel and is capable of chucking and feeding out a writing lead for a mechanical pencil; and first and second cushion springs that elastically support the chuck mechanism in an axial direction with respect to the barrel, wherein a first cushioning region having a first spring constant and a second cushioning region having a second spring constant are formed by combining the first and second cushion springs, and the first and second cushioning regions are connected with no skipping. 1. A mechanical pencil , including:a barrel;a chuck mechanism that is housed inside the barrel and is capable of chucking and feeding out a writing lead for a mechanical pencil; andfirst and second cushion springs that elastically support the chuck mechanism in an axial direction with respect to the barrel, whereina first cushioning region having a first spring constant and a second cushioning region having a second spring constant are formed by combining the first and second cushion springs, and the first and second cushioning regions are connected with no skipping.2. The mechanical pencil according to claim 1 , wherein the first and second cushion springs are integrally formed as a coil spring having first and second wound parts.3. The mechanical pencil according to claim 1 , wherein the first and second cushion springs are set so as to have a free length.4. The mechanical pencil according to claim 2 , wherein the first and second cushion springs are set so as to have a free length.5. The mechanical pencil according to claim 1 , wherein the first cushioning region and the second cushioning region are connected at one actuation point claim 1 , where the combined first and second cushion springs are compressed within a range of 0.45±0.15 mm claim 1 , when writing pressure is applied in a range of 150±50 g.6. The mechanical pencil according to claim 2 , wherein the first ...

MECHANICAL PENCIL

A mechanical pencil includes a writing lead, a chuck unit for chucking the writing lead, and a cushion spring configured to elastically support the chuck unit in such a manner that the chuck unit is retractable with a writing pressure. An output of the cushion spring, in response to a cushion stroke, is non-linear, and a slope of a spring constant, in a region where the cushion stroke is relatively small, is smaller than a slope of a spring constant in a region where the cushion stroke is relatively large. 1. A mechanical pencil , including:a writing lead;a chuck unit for chucking the writing lead; anda cushion spring configured to elastically support the chuck unit in such a manner that the chuck unit is retractable with a writing pressure,wherein an output of the cushion spring, in response to a cushion stroke, is non-linear, and a slope of a spring constant, in a region where the cushion stroke is relatively small, is smaller than a slope of a spring constant in a region where the cushion stroke is relatively large.2. The mechanical pencil according to claim 1 , wherein the slope of the spring constant monotonically increases at a constant rate as the cushion stroke increases.3. The mechanical pencil according to claim 1 , further including a tip supporting the writing lead from an outer diameter direction and capable of moving in an axial direction claim 1 ,wherein a set load of the cushion spring is equal to or lower than a resistance force resulting from the tip retracting in the axial direction.4. The mechanical pencil according to claim 3 , wherein the cushion stroke of the cushion spring is limited within a range of a prescribed stroke length in which the writing lead is not broken by a writing pressure when the writing lead protrudes a same length as the cushion stroke claim 3 , from a tip of a tip tube.5. The mechanical pencil according to claim 1 , wherein the cushion spring includes a resin material claim 1 , and the cushion stroke of the cushion spring ...

Liquid Container

To provide a liquid container which includes a liquid supply member that is exchangeably mounted thereto and prevents liquids in liquid supply members from being mixed each other after exchanging the liquid supply members. The liquid container is provided which includes a container body with a tank section to hold a liquid, an applicator coupled to the front end of the container body, a piston which is advanced through the tank section, and a piston advancing mechanism which has a pushing member and causes the piston to be advanced through the tank section in response to the operation of the pushing member. The applicator is removably coupled to the container body, and the piston advancing mechanism causes the piston to be moved only forward.

Clip attaching structure

It is a clip attaching structure wherein the cost can be reduced, and the appearance is excellent, and furthermore, the spring action is good. The clip (26) is made of a thin plate metal material, and has a base part to be inserted into an outer sleeve (20) and a main body part to be extended outside the outer sleeve, and the main body part has an approximately U-shaped cross section made by bending downward both sides of the thin plate, and between the base part and the main body part, a closing part for closing the rear end opening of the inner sleeve (22) is provided. The main body part side of the closing part has an approximately U-shaped cross section made by downward bending both sides thereof and the approximately U-shaped cross section from the main body part is continued, and the base part side of the closing part is shaped like a plate, and the downward bent portion of both sides of the closing part is inserted into the inner sleeve when the clip is not swung.

Lead feed mechanism for mechanical pencil

A mechanical pencil having a lead pipe (33), a bottom bearer (34), a frame (45), a pushing member (39), a sleeve (37), a lead chuck (36), etc. …<??>A slider (46) includes adjacent the top thereof an external engaging portion for engaging with the inside of part of the bottom member (32), and is pre-set so that the top of the slider is separated at a prescribed distance from the pushing member.

Lead delivery mechanism for a mechanical pencil

A lead delivery mechanism (13) for a mechanical pencil consists of a lead chuck (14) which is designed to grip the lead and which is fitted to the end of a lead pipe (12), a sleeve (16) abutting a chuck clamping ring (15) loosely fitted to the head portion of the lead chuck (14), a spring member (19) for clamping the chuck disposed resiliently between the sleeve (16) and the lead pipe (12), and a locking ring (18) loosely mounted on the lead chuck (14) and engaged by the rear end of the spring member (19). The locking ring (18) is restrained in the rearward direction by a stepped portion (14a) of the lead chuck (14). As the spring is held captive by the ring (18) the locking mechanism can be handled as a unit in its assembly with the lead pipe (12).

Mechanical pencil

A mechanical pencil includes a writing lead, a chuck unit for chucking the writing lead, and a cushion spring configured to elastically support the chuck unit in such a manner that the chuck unit is retractable with a writing pressure. An output of the cushion spring, in response to a cushion stroke, is non-linear, and a slope of a spring constant, in a region where the cushion stroke is relatively small, is smaller than a slope of a spring constant in a region where the cushion stroke is relatively large.

Double-chuck mechanical pencil

Pressure writer

Rotary bar-projecting mechanism for push-button implement

A rotary bar-projecting mechanism for a push-button implement comprises: a first bar held axially slidably in a barrel, an operating means capable of making the first bar project from the front end of the barrel when pushed, a tail cap fixed to the barrel and internally provided with a counter rib, a push button capable of being turned relative to the tail cap and provided with a push rib that is aligned with the counter rib of the tail cap when the push button is at a predetermined angular position, and a second bar held in the push button, capable of being projected from the back end of the push button when the push button is turned, and restrained from turning.

Pen with retractable refill

The pen has two clamping devices (4, 9) and one control device (2, 5) for side operation. There is also a device which prevents turning in both clamping devices and in the control device. The turn preventing device acts on the outer surface of a sliding part (2) forming part of the control device. There are longitudinal guide grooves (2d) for this purpose, acting with longitudinal guide ribs (1a) on the inner surface of a shaft (1).

Liquid applicator device

本發明旨在提供一種液體塗布具，其構成簡單，且使用時可不費事地產生加壓作用，獲得加壓作用之輔助，而順暢地進行往前端之塗布體之液體供應。 本發明之液體塗布具備：液體容器13，利用塗布體15塗布容置於內部之液體L；外裝容器12，外裝液體容器13並使塗布體15之前端露出至外部；罩蓋20，以可任意裝拆方式安裝於外裝容器12之前端部，覆蓋塗布體15之前端；壓縮構件40，設置於外裝容器12內之塗布體15之後端部；前方偏壓構件62，使壓縮構件40往軸向前端方向偏壓；傳動構件60，在外裝容器12內沿軸向往返移動。傳動構件60伴隨著罩蓋20之裝拆動作，而在外裝容器12內沿軸向往返移動，使壓縮構件40對著液體容器13相對地朝軸向往返移動。

Stick-shaped material propelling container

A stick-shaped material propelling container which comprises a barrel having a spiral groove formed in its inner peripheral surface, a guide tube having slits and inserted in the barrel so as to be rotatable relative to the barrel and axially unmovable, and a stick-shaped material holding member provided with side plates and protrusions and slidably inserted in the tube with the protrusions being engaged with the grooves through the slits. The groove has a structure for causing rear end portions of the side plates to come closer to each other and for causing tip end portions of the side plates to be separated radially outward from each other according to the mutually approaching movements of the rear end portions of the side plates, when the protrusions are slid along a tip end portion of the groove according to relative rotation of the barrel and the tube.

Automatic pencil

An automatic pencil which comprises a pointed end cap made of a synthetic resin material into which a lead pushing-out mechanism consisting of a lead chuck fixed to a lead container, a chuck ring externally fitted onto the lead chuck and a spring is inserted, a cushion stopper on the outer periphery of which and at one end thereof engaging projections are integrally formed so as to oppose to a plurality of engaging holes circumferentially provided around an open edge of the pointed end cap, and an outer tube into which the outer periphery of the backward end of the aforesaid pointed end cap is inserted to combine them with each other and, as a consequence, the resultant automatic pencil has a simple construction, so that it can easily be assembled.

GRAPHITE MINES CARTRIDGE FOR PENCIL PENCIL.

End plug mounting structure for writing instrument

An end plug mounting structure for writing instrument of the present invention can securely mount an end plug onto a barrel and remove it more easily. Even if assembling and removing is performed repeatedly, tightness for the end plug to be assembled on the barrel can be prevented from weakening. A locking hole is provided around cylindrical rear portion of the barrel, an inserting portion with circular cross section inserted into rear portion of the barrel from rear end of the barrel is provided on the end plug, a locking protrusion locked in a locking hole is provided at periphery of the inserting portion, a groove extending forward from rear end of the barrel and in which the locking protrusion moves is provided on inner surface of rear portion of the barrel, thereby the end plug is assembled on the barrel by means of locking the locking protrusion that moves forward in the groove in the locking hole. The locking hole is configured to be adjacent to the groove, so that the locking protrusion moving forward in the groove moves in circumferential direction so as to be locked in the locking hole. A protruding strip extending in lengthwise direction is configured on side bottom of the groove on the side of the locking hole, so that the locking protrusion can stride over the protruding strip to move along circumferential direction.

Writing instrument

Lead cartridge opening and closing unit

A lead cartridge opening and closing unit wherein outward engaging piece portions are provided on a chuck type opening and closing mechanism which is divided into sections in the diametrical direction and has inward elastic force and which is further disposed on the lead cartridge; the outward engaging piece portions moving inwardly against the inward elastic force along the diametrical direction thereof thereby to open lead conducting holes in case of forcible insertion into and engagement with a lead guide, while the outward engaging piece portions being restored by means of the inward elastic force to move outwardly along the diametrical direction thereof thereby to close the lead conducting holes in case of release for the forcible insertion and engagement; whereby when the outward engaging piece portions of the chuck type opening and closing mechanism are forcibly fitted in the lead guide, the outward engaging piece portions move inwardly along the diametrical direction thereof to be resiliently fitted to and engaged with the lead guide so that the lead conducting holes are opened, and on the other hand when the outward engaging piece portions are drawn out from the lead guide, these outward engaging piece portions are restored outwardly by means of the inward elastic force along the diametrical direction thereof so that the lead conducting holes are closed.

Double chuck type mechanical pencil and internal writing mechanism thereof

Disclosed is a double chuck type mechanical pencil and an internal writing mechanism thereof comprising a feed chuck for feeding a normal lead, and a tip chuck for holding the tip of a lead for reducing a residual lead. The double chuck type mechanical pencil comprises a lead tank provided movably in a longitudinal direction within a barrel, a feed chuck connected to the lead tank to feed leads, a chuck ring loosely fitted in the feed chuck, a sleeve provided externally of the feed chuck, a chuck spring provided between the sleeve and the lead tank, an inner tube provided externally of the sleeve and movable integrally with the sleeve, a cushion spring provided between the inner tube and the barrel, a tip chuck provided on the end part of the inner tube, a tip ring provided externally of the tip chuck, and a tip spring provided between the tip chuck and the inner tube.

Dual refill writing utensil

Knock type liquid container

Rotary knock type mechanical pencil

A rotary knock type mechanical pencil in which the forward and rearward outer cylindrical are relatively rotated, a cam movement converting mechanism stored in the forward outer cylinder converts the rotary movement into an axial advancing or retracting movement, the lead feeding mechanism may feed the lead of desired length from the extremity end of the mechanical pencil under a knocking operation in the shaft comprising: a cam cylinder integrally rotating with the rearward outer cylinder; that includes two cam surfaces and an engaging part which allows retraction of a lead guide pipe a rotary cam mechanism for converting the rotary movement of the cam cylinder into a reciprocating advancing or retracting movement while slidably contacting with the cam surface formed at the extremity end surface of the cam cylinder; a lead feeding mechanism including an advancing or retracting mechanism such as a cassette adapter for advancing or retracting the lead chuck attached to the extremity end under a reciprocating movement applied through the rotary cam mechanism, a lead chuck for holding the lead, and a tightening member freely inserted into the extremity end of the load chuck and for holding or releasing a lead of the lead chuck as its advancing movement is carried out.

Container

To provide a container that can be easily configured and has good operability when opened and closed with one hand. The container includes a container body having an opening, and a lid body that can open and close the opening of the container body, wherein the container body has, near the opening, a journaling portion that supports the lid body rotatably around an axis orthogonal to an opening surface of the opening, while the lid body has a journaled portion that is journaled by the journaling portion, and a lid portion, and the lid body rotates around the journaling portion to allow the lid portion to move to a position for covering the opening and a position for exposing the opening.

Rod articles dispenser

Hand tools, cosmetic devices and writing instruments

A hand tool includes an outer barrel, an inner barrel housed in the outer barrel, and a rear barrel assembled to the outer barrel and the inner barrel. One of the outer barrel and the inner barrel includes a cam follower protruding in a radial direction of the hand tool, the other of the outer barrel and the inner barrel includes a cam groove engaging with the cam follower, and the cam follower is supported to be movable in a radial direction.

Composite writing instrument

A composite writing instrument comprising a writing instrument mechanism having a plurality of refills and a rod-like delivery mechanism, the composite writing instrument comprising middle shaft provided between a front shaft and a rear shaft, return springs having one end terminated at the middle shaft to urge the refills, respectively, backward sliding cams mounted at rear portions of the refills and terminated at the other ends of the return springs to be urged backward, a cam body having at a front portion a cam operating portion which presses the rear end of either of the sliding cams to selectively advance the refills a guide tube rotatably engaging the cam body and having a guide groove in the axial direction a slider formed in the guide tube holding a rod-like article and being slidable in the axial direction along the guide groove of the guide tube, the cam body being provided with an engaging portion which engages the middle shaft so as to be slidable in the direction of the front shaft and be rotatable, the cam body further being formed with a helical groove in an inner periphery at the rear portion thereof, and the slider being provided with an engaging projection in engagement with the helical groove of the cam body, whereby the rotation of the cam body is controlled about the middle shaft by engagement of an engaging piece formed at the rear end of the middle shaft and a projection of the cam body.

Double-chuck mechanical pencil

The invention is intended to prevent, in a double-chuck mechanical pencil provided with an eraser, the torsional breakage of a lead gripped by a front lead chuck and a back lead chuck due to the turning of a lead tank caused when an eraser is used, and to eliminate inconvenience to a lead supplying operation caused by the abrasion of the eraser. A double-chuck mechanical pencil having a front lead chuck (11) for holding a lead and a back lead chuck (5) for advancing a lead, comprises a barrel (1), a lead tank (4) connected to the back lead chuck (5), an adapter (3) fixedly put on a back portion of the lead tank (4), restrained from rotation relative to the barrel (1) and axially movable, and a rotary eraser projecting mechanism (12) provided with a support member (13) or an eraser support structure (16) provided with a support member (17) restrained from rotation relative to the adapter (3) and detachably connected to a back portion of the adapter (3).

Side knock-type mechanical pencil

A side knock-type mechanical pencil comprises: a barrel, a push member supported on the side wall of the barrel, and a sliding tube longitudinally slidably inserted in the barrel so as to correspond to the push member and internally provided with a lead passage. An angular cam portion formed in a middle portion of the sliding tube has a stepped surface consisting of a high slope and a pair of low slopes. The pair of side members of the push member touch the pair of low slopes in the initial stage of the pushing operation, and the top member which joins the pair of side members the high slope in a final stage of the pushing operation. The axis of a back portion is displaced from the axis of the barrel to a side opposite the side of the push member. A funnel-shaped lead receiving portion is formed integrally with the back portion at the back end of the same.

Stick-shaped material propelling container

Clip attachment structure for a writing instrument

A clip mounting structure for a writing implement has a shaft tube, a clip mounted at the rear part of the shaft tube, and an insertion member inserted into the rear part of the shaft tube. A clip mounting section to which the rear part of the clip is fitted and aligned is formed at the rear part of the shaft tube. Mounting sections curved in the direction along the inner peripheral surface of the shaft tube are formed at opposite sides of the rear part of the clip. Fitting recesses into which the mounting sections of the clip are fitted are formed in the outer wall of the insertion member. With the mounting sections of the clip fitted in and engaged with the fitting recesses in the insertion member, the insertion member is inserted into the rear part of the shaft body to fit the rear part of the clip into the clip mounting section of the shaft tube. Thus, the insertion member is engaged in position inside the shaft tube.

MINE CARTRIDGE WITH A CAP CONSTRUCTION THAT CAN BE OPENED.

Writing instrument

Liquid applicator

Stick-shaped material propelling container

In a stick-shaped material propelling container capable of propelling and retracting a stick-shaped material, the influence of variation of the dimension of the stick-shaped material can be made small. An inner barrel (14) is slidably inserted in an outer barrel (12), an elastic body (16) which urges the inner barrel (14) rearward is provided between the inner barrel (14) and the outer barrel (12), a chuck piece (18) which holds a stick-shaped material is provided at a tip end portion of the inner barrel (14), and a chuck ring (20) is inserted between the chuck piece (18) and the outer barrel (12). A cross section of the stick-shaped material forms a triangular shape, the frictional force applying part (12b) which is in contact with the stick-shaped material to apply a frictional force is formed on an inner peripheral surface of the outer barrel (12), and the frictional force applying part (12b) abuts on a side in the vicinity of a vertex of the stick-shaped material in a cross section of the stick-shaped material.

Mechanical pencil

A mechanical pencil in which lead feed is done auto­matically upon release of writing of a slider (3) from the paper surface or the like and the slider can be locked in a retreated position when the pencil is not in us, and the mechanical pencil including a tip member (2) fitted in the front end of a shell removably, a sleeve (4) disposed slidably in the interior of said tip member, a lead feed mechanism (5) which is mounted in the interior of the sleeve and which permits a forward movement of a lead but inhibits a back­ward movement of the lead, an ejection bar (10) mounted on the front end side of the sleeve, with the lead extending through the ejection bar, a slider disposed slidably within the tip member and having a locking engaging portion (35) capable of engaging said tip member disengageably, the slider imparting a predetermined frictional force to the lead, and a resilient member (11) disposed between the slider and the ejection bar, the resilient member having an urging force stronger than a lead gripping force of the lead feed mechanism under a given state.

Patent IN162631B

A lead propelling mechanism for a mechanical pencil includes a lead chuck, a ring fitted loosely about the chuck for tightening its head, a sleeve having a front end contacting the ring, and an elastic member having a front end bearing on the front end of the sleeve and a rear end held by a shoulder formed on the outer surface of the chuck adjacent to its rear end. The mechanism is very easy to assemble and join to a lead holding tube in the pencil. The rear end of the elastic member bears against an adjacent end of the tube to urge the ring to tighten the head of the chuck, when the chuck is inserted into the tube.

Liquid container

The liquid container includes a body for having a tank portion housing a liquid, and having a supply port on a tip end side, a piston for moving forward inside the tank portion, a piston rod connected with the piston and extending rearward, a manipulating cylinder rotatably mounted to a rear portion of the body, and a rotation stopping cylinder unrotatably disposed in a rear inner portion of the body. A conversion mechanism for converting relative rotation between the manipulating cylinder and the body into movement of the piston rod in an axial direction with respect to the body is provided between the manipulating cylinder and the rotation stopping cylinder, and a rotating direction restricting mechanism for restricting the rotating direction of the manipulating cylinder and the body to one direction is provided. The manipulating cylinder and the rotation stopping cylinder are integrally connected by fitting the annular raised portion formed on the rotation stopping cylinder into the annular recessed portion formed on the manipulating cylinder.

Pick-up member for a pen-shaped object and housing, provided with a pick-up member for a pen-shaped object

MINE DRIVING MECHANISM FOR A PENCIL

Mechanical pencil equipped with lead-storing cartridge

Clip attaching structure

It is a clip attaching structure wherein the cost can be reduced, and the appearance is excellent, and furthermore, the spring action is good. The clip is made of a thin plate metal material, and has a base part to be inserted into an outer sleeve and a main body part to be extended outside the outer sleeve, and the main body part has an approximately U-shaped cross section made by bending downward both sides of the thin plate, and between the base part and the main body part, a closing part for closing the rear end opening of the inner sleeve is provided. The main body part side of the closing part has an approximately U-shaped cross section made by downward bending both sides thereof and the approximately U-shaped cross section from the main body part is continued, and the base part side of the closing part is shaped like a plate, and the downward bent portion of both sides of the closing part is inserted into the inner sleeve when the clip is not swung.

Knocking writing utensil

A knocking writing utensil which automatically returns a writing medium to a withdrawn position when a clip is used, includes an engagingly-locking protrusion formed on an engagement body that moves inside an external cylinder together with a refill. An engaging-lock receiving protruding portion including an engaging-lock receiving portion at its front end is formed on the rear surface of a non-proximal end of a clip with its proximal end fixed to the external cylinder. A guide hole is formed in the external cylinder so as to correspond to the engaging-lock receiving protruding portion. A cam portion for abutting on the engagingly-locking protrusion is formed on a knock bar integrated with a knock body. The cam portion moves the engagingly-locking protrusion beyond the engaging-lock receiving protruding portion from behind it to the engaging-lock receiving portion, or guides the engagingly-locking protrusion from the engaging-lock receiving portion to behind the engaging-lock receiving protruding portion so as to pass by one lateral side of the engaging-lock receiving protruding portion.

Writing appliance with double charge

A writing utensil with dual refills is described, which when a cap (3) on a body (1), is rotated in one direction or the other, first and second refills (4, 5) are alternately projected and retracted from the body (1), whereby either the first or second refill can be held at an operating position whilst the other is withdrawn.

Fountain pen with two jaws

Liquid applicator

A liquid applicator capable of easily replenishment and replacement of liquid and capable of accommodation of a large amount of liquid. The liquid applicator comprises main body (10) provided thereinside with a tank part, forward shaft (14) coupled to the distal end side of the main body (10) and brush (18) fixed inside the forward shaft (14) so as to project from the distal end of the forward shaft (14). Liquid (40) can be suctioned into the tank part by decoupling the forward shaft (14) from the main body (10), sinking a distal end opening of the main body (10) in liquid (40) and sliding slide tube (32) fitted to a posterior portion of themain body (10).

ROTARY HIT TYPE PENCIL.

La presente invención se refiere a un lápicero de tipo de golpeo rotatorio, que tiene un mecanismo alimentador de puntilla, que incluye un portador de puntilla ajustado en un cilindro exterior delantero, operado cooperativamente para alimentar una puntilla bajo la rotación de un cilindro exterior trasero, conectado rotatoria y removiblemente al extremo trasero del cilindro exterior delantero, caracterizado porque comprende: medios de acoplamiento de leva, conectados integralmente al extremo trasero del portador de puntilla del mecanismo alimentador de puntilla, e insertados axial y moviblemente en el cilindro exterior delantero, junto con el mecanismo alimentador de puntilla, y acoplado en su dirección de rotación axial; y un cilindro de leva conectado al cilindro exterior trasero, estando insertado rotatoria y removiblemente el cilindro de leva en la parte interna trasera del cilindro exterior delantero, y teniendo medios de superficie de leva en su extremo frontal; y el cilindro de leva es girado integralmente con el cilindro exterior trasero para alimentar la puntilla.

Lead cartridge for mechanical pencil

A lead cartridge has an opening and closing unit in which outward engaging portions (88, 89) are provided on a chuck type opening and closing mechanism which is divided into sections which have an inward elastic force and which is disposed on the lead cartridge. The outward engaging piece portions can move inwards against the inward elastic force along the diametrical direction thereof to open lead conducting holes when the cartridge is inserted into and engaged with a lead guide, whilst the outward engaging piece portions are restored by means of elastic force to move outwardly to close the lead conducting holes. When the outward engaging piece portions move inwards so that the lead conducting holes are opened, and on the other hand when the outward engaging piece portions are drawn out from the lead guide, these outward engaging piece portions are restored outwards by means of the elastic force so that the lead conducting holes are closed.

Writing instrument

A writing instrument is disclosed which includes a cylindrical barrel (1) and an end cover (3) having a robust structure and attached to the cylindrical barrel (1). The end cover (3) comprises a cylindrical base (3a) attached to a rear end portion of the cylindrical barrel (1), a cover body (3b) fitted around an outer peripheral surface of the cylindrical base (3a), a stopper ring (3c) fitted around an outer peripheral surface of at least a fitted portion between the cylindrical base (3a) and the cover body (3b), and a cooperation structure for facilitating enhancing of holding force which is exerted on the cover body (3b) by the cylindrical base (3a) and the stopper ring (3c).

Mechanical pencil

Abstract: A mechanical pencil wherein a slider in contact with a lead and an outer tube with different frictional resistances other than a lead delivery mechanism for effecting lead-free by general knocking operation are provided within the outer tube or a fore means, whereby the end of a consumed lead is pressed against or released from a surface of paper or the like to thereby project the lead from a lead guide by an amount corresponding to backward movement of the slider. The lead-feeding may be easily accomplished merely by pressing operation without changing the grip of the outer tube.

Knock-type writing instrument

A knock-type writing instrument is provided, which allows an easy refill exchange with a simple operation while inhibiting deformation of slits, breakage of a shaft tube, etc., during the refill exchange.

Mechanical pencil

Writing instrument

Mechanical pencil

A mechanical pencil includes a barrel, a lead feeding mechanism disposed in the barrel to tighten and feed a lead, and a lead holder disposed between the lead feeding mechanism and a tip end of the barrel. The lead holder includes a through hole through which the lead penetrates, holding portions for holding the lead, and a contact portion for contacting an inner peripheral face of the barrel. The holding portions include a first holding portion at a front portion of the lead holder and a second holding portion at a rear portion of the lead holder. When a length of the lead becomes shorter than a distance between the lead feeding mechanism and the tip end of the barrel, the first holding portion holds the short lead and the second holding portion holds a next lead tightened by the lead feeding mechanism.

Immer scharfer bleistift.

Liquid container

Mechanical pencil

A mechanical pencil (10), includes an external cylinder (12), a lead delivery mechanism (20) disposed in the external cylinder, the lead delivery mechanism having a lead-fastening chuck (22) which fastens a lead and moves back and forth in the external cylinder to deliver the lead (40) toward a front end of the external cylinder, a lead holder disposed before the lead delivery mechanism in the external cylinder to gently hold a lead (40), and a guide member arranged between the lead-fastening chuck and the lead holder in the external cylinder and always urged backwardly toward the lead-fastening chuck to protect a lead portion between the lead-fastening chuck and a lead holding portion of the lead holder.

Lead cartridge and mechnical pencil provided with such lead cartridge

Lead cartridge and writing tool into which lead cartridge is to be incorporated

Lead Cartridge and Writing Tool into which Lead Cartridge is to be Incorporated

A lead cartridge capable of holding a rod-shaped object of a sufficient length and allowing simultaneous replacement of the lead and the rod-shaped object is to be provided. A lead cartridge which includes a lead tank for containing leads and is detachably incorporated into a mechanical pencil to supply leads has a rod-shaped object feeding mechanism which propels the rod-shaped object by turning manipulation. This rod-shaped object feeding mechanism is configured of a spiral groove formed in the inner circumferential surface of a case comprising the lead tank, a guide sleeve which is arranged in the case to be unable to move in the axial direction and able to turn relative to the case and in which guide holes extending in the axial direction are formed, and a receptacle which is slidably fitted into the guide holes of the guide sleeve and has a male thread screwing into the spiral groove. A rod-shaped object is held by the receptacle. When the lead cartridge is incorporated into a mechanical pencil, the case becomes unable to turn relative to the outer sleeve of the mechanical pencil, and part of the guide sleeve protrudes out of the mechanical pencil.

Propelling pencil

Liquid container

In a liquid container, it is made possible to store liquid that is overflowed by fluctuations in atmospheric pressure and thereby to prevent liquid leaks, and the whole quantity of the stored liquid is enabled to be used. The liquid container is provided with a body having a main tank in which liquid is stored; a supply outlet, located toward the tip of the body, for supplying the liquid; a guiding portion connecting the main tank and the supply outlet to guide the liquid from the main tank to the supply outlet; and a liquid reservoir having an air flow port communicating with the exterior and a liquid flow port communicating with the main tank or the guiding portion and an overflowing liquid flow path for storing liquid overflowing the main tank. The liquid is stored farther away from the supply outlet than the liquid flow port.

Mechanical pencil

Composite writing implement

A composite writing implement is capable of being used as a ball-point pen, a mechanical pencil or a stylus pen. The composite writing implement includes a barrel, a pencil lead feeder unit axially slidably placed in a front part of the barrel, a ballpoint refill unit disposed behind and coaxially with the pencil lead feeder unit in a back part of the barrel and including a ballpoint refill case and a ballpoint refill fixedly held in the ballpoint refill case, a rotary cam operatively connecting the ballpoint refill case and the pencil lead feeder unit, and a cap put on the ballpoint refill case so as to cover the ballpoint tip of the ballpoint refill, provided with a stylus tip, capable of being used as a stylus and means for turning the rotary cam through the ballpoint refill case to make the pencil lead feeder feed a lead.

Mechanical pencil

Mechanical pencil

A mechanical pencil, includes a barrel, a lead feeding mechanism disposed in the barrel to tighten and feed a lead, an operating part for causing the lead feeding mechanism to feed the lead, and holding portions for holding the lead being provided in at least two positions between the lead feeding mechanism and a tip end of the barrel spacedly in the axial direction.

Pen head fixing structure

芯カートリッジ及びその芯カートリッジが組み込まれるシャープペンシル

　芯を収容するタンク部を備え、シャープペンシルの芯送出機構に設けられた受部に着脱可能に連結されて芯を供給する芯カートリッジにおいて、製造コスト・製造工程を削減することができ、且つ、不用意に芯が芯カートリッジから脱落することを防ぐ。 　芯カートリッジ１０は、ケース１２と揺動蓋体１４とを有する。ケース１２内部にはタンク部１２ａが画成され、ケース１２の先端部は開口した先端連結部１２ｂとなっており、タンク部１２ａと先端連結部１２ｂとの間には芯導通口１２ｅが形成されている。揺動蓋体１４は、ケース１２内で、芯導通口１２ｅを閉鎖する閉鎖位置と芯導通口１２ｅを開放する開放位置とに揺動可能に取付けられる。揺動蓋体１４は、シャープペンシルのカートリッジ受部４６ｂの干渉部４６ｅと干渉可能となった被干渉部１４ｃを有しており、揺動蓋体１４は、前記開放位置から閉鎖位置に向かう揺動方向に付勢される一方で、先端連結部１２ｂがカートリッジ受部４６ｂと嵌合すると、被干渉部１４ｃが干渉部４６ｅと干渉して閉鎖位置から開放位置へと揺動する。

Twin writing instrument

Lead cartridge and mechanical pencil with built-in lead cartridge

Composite writing utensil

Composite writing tool

A composite writing tool wherein when the rear shaft is rotated relative to a front shaft, a cam sleeve rotates with the rear shaft, and the relative rotation occurring between the cam sleeve and the front shaft and an intermediate shaft causes one of writing shafts guided in the axial direction by the intermediate shaft to be selectively held in a protruding position, and when a knock sleeve is knocked, the cam sleeve is knocked to advance a lead of the writing shaft protruded by the cam sleeve. The rear part of the intermediate shaft is inserted into the cam sleeve, and engaging pieces of the rear part of the intermediate shaft penetrate a through hole formed in a perpendicular engaging wall formed in a tail cap fastened to the rear end of a rear shaft, and are engaged with the through hole. The cam sleeve and the knock sleeve are linked to each other through a recess elsewhere than the through hole in the engaging wall.

Composite writing utensil

Composite writing tool

Container having a bar-type article dispenser

Füllminenstift

Recipiente de propulsión para material con forma de barra

Un recipiente de propulsión para material con forma de barra, que comprende un cilindro externo (12), un cilindro interno (14) insertado de manera deslizante en el cilindro externo, en elemento elástico (16) previsto entre el cilindro interno y el cilindro externo para empujar el cilindro interno hacia atrás, piezas de sujeción (18) previstas en una parte de extremo final del cilindro interno para asegurar un material con forma de barra (24) alojado en el cilindro interno, y un anillo de sujeción (20) insertado entre las piezas de sujeción y el cilindro externo, con lo que el deslizamiento del cilindro interno hacia delante y hacia atrás permite la propulsión o retracción del material con forma de barra, incluyendo además el recipiente de propulsión para material con forma de barra una pinza (14b) prevista en el cilindro interno para extenderse a lo largo de la parte exterior del cilindro externo, y caracterizado por que dicho elemento elástico se coloca en una única posición correspondiente opuesta a la pinza en una dirección circunferencial del cilindro externo y del cilindro interno.

[UNK]

Clip attaching device in writing implement

Mechanical pencil

A mechanical pencil includes a writing lead, a chuck that chucks the writing lead and feeds the writing lead forward, and a shaft tube for housing the writing lead and the chuck. When a click operation for feeding the chuck forward is performed, a jet stream flowing forward is generated inside the shaft tube.

Double chucks type mechanical pencil

Grip for writing implement

Knock type writing implement

Stick-shaped material propelling container

Writing instrument

A writing instrument according to an embodiment of the invention including, a chuck that chucks a writing lead, wherein the chuck includes a first chuck pawl which comes into point contact or line contact with the writing lead to press the writing lead so as to apply first contact stress to the writing lead; and a second chuck pawl which presses the writing lead so as to apply, to the writing lead, second contact stress that is lower than the first contact stress, and the first contact stress is configured such that, when a prescribed impact is applied to the writing lead, a contact portion of the writing lead subjected to the first contact stress fractures and absorbs the prescribed impact.

Writing instrument refills and writing instrument

In one embodiment, a writing instrument refill includes a first portion having flexibility, and a second portion having a cross-sectional area larger than a cross-sectional area of the first portion, wherein the center of figure of the cross section of the first portion is offset from the center of the figure of the cross section of the second portion, the first portion and the second portion are formed integrally, and a part of the first portion has an outer diameter smaller than an outer diameter of the other part of the first portion.

Writing instrument refills and writing instrument

In one embodiment, a writing instrument refill includes a first portion having flexibility, and a second portion having a cross-sectional area larger than a cross-sectional area of the first portion, wherein the center of figure of the cross section of the first portion is offset from the center of the figure of the cross section of the second portion, the first portion and the second portion are formed integrally, and a part of the first portion has an outer diameter smaller than an outer diameter of the other part of the first portion.

Liquid applying tool

A liquid applying tool which can create pressurizing action with a simple structure and without any labor at the time of using the liquid applying tool, and allows liquid to be smoothly fed to a tip end of a liquid applicator member with the assistance of the pressurizing action.

Mechanical pencil

A mechanical pencil is including a tubular shaft, a chuck unit movably arranged in the shaft, a front rotary element adapted to be moved rearward as the unit is moved rearward, a rear rotary element adapted to be moved rearward as the front rotary element is moved rearward, a conversion means for causing the rear rotary element to rotate in a normal rotational direction as the rear rotary element is moved rearward and allowing the rear rotary element to rotate in a reverse rotational direction as the rear rotary element is moved forward, a normal directional rotation transmitting means for allowing the front rotary element to be rotated in the normal rotational direction and the rear rotary element to be idly rotated, and a reverse directional rotation restricting mechanism allowing the normal directional rotation of the front rotary element but preventing the reverse directional rotation of the front rotary element.