Multi-purpose telescoping converting furniture

Technical Field

The invention belongs to the field of furniture, in particular to a multi-functional telescopic conversion furniture.

Background Art

At present, the seat and reclining chair needs to be separately purchase, the cost is increased and also occupies more indoor space, but also the existing deck chair in the chair back angle regulating only a fixed number of angle, is unable to meet the demand for more adjustment of the angle, the more inconvenience in use.

Content of the invention

The present invention provides a multifunctional telescopic conversion furniture, in order to solve the defect in the prior art.

The present invention can be realized through the following technical solution:

A multi-functional telescopic conversion furniture, comprises a long stick, the four corners of the bottom surface of the rectangular block are respectively fixed vertical supporting post, the long strip block the rear end of the connection end of a supporting plate, the supporting plate and the other end of the two side are respectively fixed level of the rod 1st, each 1st rod the other end of the one end of the connecting rods, the two sides of the rectangular block are respectively provided with a sliding groove, each sliding groove on the inner slide block is arranged, each of the connecting rod and the other end with the corresponding slide block articulated connection, each of the slide blocks one end of the fixed shaft to the connecting rod, two connecting rods are respectively located at the two sides of the long stick, two connecting rods between the bottom of the rod is fixedly connected through the horizontal, the horizontal rod is located at the lower part of the long stick, the horizontal rod before the two sides are respectively provided with a guide hole, the horizontal rod arranged in the middle of the front end of the screw hole of the 1st, the long strip block at two sides of bottom through the connecting block is fixedly mounted guide rod, the guide rod and the horizontal rod are perpendicular to each other, each guide rod can pass through the corresponding one of the guide hole, two of the guide rod is provided with a 1st between the screw, the screw and the guide rod 1st are parallel to each other, the front end of the screw and the 1st respectively by a connection block connected with the bottom surface of the rectangular block, capable of passing through the screw hole of the screw 1st 1st, 1st back end of the screw can be inserted through the rear of the connecting block, 1st back end of the screw is fixed 1st helical gear, long strips of the front opening of the cavity, the inner wall of the right side of the housing are provided with guide slots, each guide slot is arranged in cooperation with the guide block, the guide block between two block through the horizontal frame is fixedly connected, guide block which is located to the rear of the frame, the two sides of the front end of the bottom surface of the cavity are respectively and movably mounted the gear wheel, the two gear are meshed with each other, the two gear located in frame, the inner wall of the frame are respectively fixed on the two sides of the mounting rack, each gear with a rack engaged with, one of the rotating shaft of gear passes through the long strips, passes through the long strips of the bottom end of the rotating shaft of gear fixed helical gear 2nd, 2nd helical gear is located at the lower part of the long stick, frame fixed on the top surface of the mounting level , rectangular block the rear end of the bottom surface of the bar, with the strip groove is provided with a movable block, the movable block is movably installed on the bottom surface of 3rd helical gear, 3rd helical gear with helical gear engaged with the 1st, 3rd gear is fixed to the rotation shaft of the helical gear 4th, 3rd 4th helical gear is located at the upper part of the bevel gear, fixed on one side of the movable block connected with the push rod, the push rod the other end of the stick through the long, movable block fixed in one side of the bottom surface of the sleeve 1st, the push rod and the other end is fixed to the bottom side of the fixed sleeve and the 2nd, 1st in the fixed sleeve is arranged in cooperation with the rotating shaft, the rotating shaft can be inserted through the 2nd fixed sleeve, rotating shaft is located on the lower part of the long stick, one end of the spindle is fixed 5th helical gear, 4th 5th helical gear with helical gear engaged with, the bottom surface of the long strips of the front and rear ends are respectively fixed installation guide sleeve, the guide sleeve and the inner wall of the connecting shaft is provided with a 1st, 1st the connecting shaft can be inserted through the two guide sleeves, connecting the front and back ends of the 1st are respectively fixed mounting 6th helical gear, is located at the rear end of the connecting shaft 1st 6th helical gear with helical gear engaged with the 3rd, is located at the front end of the connecting shaft 1st 6th helical gear with helical gear engaged with the 2nd, the front edge of the horizontal rod is provided at one end of the 1st through-hole, through the connecting shaft can be 1st 1st through hole.

As mentioned above of a multifunctional telescopic conversion furniture, is located in the rectangular block with one end of each of the two said supporting columns fixedly connected through between the vertical plate, the vertical plate located in front of the rear of the opening of the 2nd through hole, two vertical plates are respectively through the bearing between the movably arranged a connecting shaft 2nd, 2nd the connecting shaft can be inserted through the through hole 2nd, 2nd connecting shafts are perpendicular to each other and the vertical, the rear end of the 2nd connecting shafts is provided with a T-shaped hole and the cross section, is provided with a slide hole with the cross section of the T-shaped slide bar for, the rear end of the slide bar is fixed L-shaped rod, located behind the rear of the vertical plate is provided with a plurality of jack, a plurality of inserting holes to 2nd through hole as a center of circle, L-shaped rod can be inserted into the to a jack, the two ends of the 2nd connecting shafts are respectively fixedly connected with the fixing rod and the 2nd, two 2nd rod are located between the two vertical plates, each 2nd rod connected to the other end of the one end of the radiation detector, the opposing faces of the two vertical plates are respectively provided with two sliding groove, vertical plates on each of the two sliding groove are respectively located at the two sides of the vertical plate, each sliding groove is arranged in cooperation with the sliding block, the sliding block between the four through the horizontal moving plate fixedly connected, each radiation detector and the other end of the mobile plate with one end of the articulated connection, the bottom surface of the mobile plate movably arranged a plurality of rollers.

As mentioned above of a multifunctional telescopic conversion furniture, located at the front end of the rectangular block of two said supporting columns are respectively fixedly installed at the level of the front end of the telescopic rod, the front end of the telescopic rod between the two through the long strip-shaped support block is fixedly connected, the top end of the support block with the contact with the bottom of the frame, between the rod and the support column is fixedly connected by the diagonal.

As mentioned above of a multifunctional telescopic conversion furniture, the top end of the cavity is provided with two grooves, the two grooves are respectively located at the two sides of the cavity, placing the rear end of the top surface of the fixed mounting the two movable blocks, two movable blocks are respectively located at two sides of the holding plate, each movable blocks can be inserted into and along the groove to the groove in the mobile.

As mentioned above of a multifunctional telescopic conversion furniture, the long stick fixed mounting level of the rear end of the support platform.

As mentioned above of a multifunctional telescopic conversion furniture, the support column is fixed at the end of the mounting mat, the supporting plate and the other end is fixedly mounted in front of the neck.

The advantage of this invention is: the supporting board and the strip are vertical with each other state, to serve as a seat; when the requires the use of a reclining chair, push the push rod and the movable block to promote the bar on one side, so that the 3rd helical gear with helical gear engaged with the 1st, 3rd gear is fixed to the rotation shaft of the helical gear 4th, 5th 4th gear meshing with the helical gear, 5th gear is fixedly connected with the rotating shaft, the rotating shaft passes through the sleeve 1st, 2nd fixed sleeve, 1st fixed sleeve fixedly connected with the movable block, 2nd fixed sleeve fixedly connected with the push rod, and then the push rod moves at the same time can drive the rotating shaft of the synchronous movement, and a rotating shaft rotating the helical gear can make the 5th, 4th 5th helical gear driven by rotation of the helical gear, the rotation of the 3rd gear, the bevel gear and the 3rd 1st fixedly connected with the screw, and the screw passes through the screw hole of the 1st 1st, each guide rod passes through a guide hole, the screw 1st of the horizontal bar to the post-move, the horizontal bar is fixedly connected with the connecting rod, the connecting rod is fixedly connected with the slide block, and then can drive the slide block to move to the back of the long strip block, between the sliding block and the 1st fixed through a connecting rod hinged, and then slide to move backwards, the support plate to the hinging point as the center of the folded backward, and adjusted according to the need of the turning angle of the support plate, so that the user can rely on the support board is more comfortable and, at the same time the push rod is pulled outwards, so that the movable block to move to the side of the bar and the other, so that the 3rd helical gear positioned at the rear end of the connecting shaft 1st 6th helical gear meshing, and then to rotate the rotation shaft can make the 3rd helical gear rotating and drives the 6th helical gear rotary, 6th the bevel gear and the 1st connection shaft are fixedly connected, located at the front end of the connecting shaft 1st 6th helical gear with helical gear engaged with the 2nd, 6th helical gear rotates and drives the rotation of the 2nd gear, 2nd the bevel gear and the one of the rotation of the gear shaft are fixedly connected, and then can drive the gear to rotate, gear is located within the cavity, the two gears are meshed with each other, each gear meshing with a rack, a gear rotating can move forward of the frame, the frame drives the placing plate out of the cavity, then according to the user's leggy adjust the projected length of the holding plate, and then according to the user of different height adjustment, and is especially suitable for the user, the user is more comfortable; continue rearward movement of the slide block, the support plate folded to the horizontal state and the rectangular block are parallel to each other, frame drives the placing plate and extends to the outside, and then can be used as a bed for use, thus in use can meet the needs of different furniture use. The invention can be in the seat, reclining chair, bed between the conversion, can be adjusted according to different kinds of furniture demand, meet different use demand, saving the indoor space, and the cost is reduced, and at the same time act as a reclining chair when in use, the supporting plate can be multi-angle adjustment, the user can adjust the angle to meet different needs, and can also be according to different heights of the users of the projected length of the frame, the present invention serving as the reclining chair when in use, the user is more comfortable, and further improve the space utilization rate. 1st 1st is screw-engaged with the screw hole of the screw, so that the 1st screw has a self-locking function, the horizontal rod then can be fixed in position, so that the structure is more stable.

Description of drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the prior art, to the embodiment below in the description of the prior art or the need to use the diagram for a simple introduction, it is clear that, in the attached drawing is described below of some embodiments of the invention, the ordinary skill in the art is concerned, is not paid in the premise of creative , can also be on the basis of these with photos to obtain the other of the Figure.

Figure 1 is the structure diagram of the invention; Figure 2 is the left view of Figure 1; Figure 3 is the to the view of Figure 1 of the A; Figure 4 is the to the view of Figure 1 of the B; Figure 5 is the to the view of Figure 2 of the C; Figure 6 is the to the view of Figure 2 is D.

Mode of execution

For the purpose of the embodiment of the invention, the technical scheme and the advantages more clearly, with the lower portion of the embodiment of the invention in the Figure, in the present embodiment of the invention the technical proposal a clear, and complete description, obviously, the embodiment described is a part of the embodiment of this invention, not all of the embodiments. In this invention based on the embodiment of the, ordinary technical personnel in this field has not made the creative work obtained under the premise of all other embodiments, all belong to the scope of protection of this invention.

A multi-functional telescopic conversion furniture, as shown, comprises a long stick 1, the long strip block 1 are respectively fixed on the four corners of the bottom are arranged vertical to the supporting post 2, the long strip block 1 is connected to the rear end of the support plate 3 of the one end, the support plate 3 and the other end of the two sides of the 1st fixed level of the rod 4, each 1st rod 4 connected with the other end of the connecting rod 5 one end of, the long strip block 1 respectively at two sides of the sliding groove 6, each sliding groove 6 is combined in the slide block 7, each connecting rod 5 with the corresponding to the other end of the slide block 7 articulated connection, each slide block 7 is fixed at one end of the direction of the connecting rod 8, two connecting rods 8 are respectively located in the long vertical and horizontal relationships 1 of the two sides, two connecting rods 8 through between the bottom of the horizontal bars 9 is fixedly connected, the horizontal bar 9 is located in the long vertical and horizontal relationships 1 below, horizontal bars 9 before the two sides are respectively provided with a guide hole 10, horizontal bars 9 arranged in the middle of the front end of the screw hole of the 1st 11, the long strip block 1 are respectively connected to the two sides of the bottom surface of the block is fixedly mounted guide rod 12, the guide rod 12 and the horizontal rod 9 are perpendicular to each other, each guide rod 12 can pass through the corresponding one of the guide hole 10, two guide rod 12 is provided with a 1st between the screw 13, 1st screw 13 with the guide rod 12 are parallel to each other, 1st screw 13 of the front and rear ends by a connection block with the long strip block 1 connected to the bottom of, 1st screw 13 passing through the screw hole of the 1st 11, 1st screw 13 can be inserted through the rear of the rear end of the connecting block, 1st screw 13 is fixed to the rear end of the 1st gear 14, the long strip block 1 with the support plate 3 hinged connection, the support plate 3 and the other two sides of the one end of the fixed rod 1st 4, 1st rod 4 with the sliding block 7 through a connecting rod 5 the hinged connection, the slide block 7 and connecting rod 8 is fixedly connected, two connecting rods 8 through between the horizontal bars 9 fixedly connected, 1st screw 13 passes through the horizontal bars 9 of the screw on the 1st 11, each guide rod 12 passes through a guide hole 10, 1st screw 13 rotating can drive the horizontal bars 9 along the guide rod 12 moves backward, horizontal bars 9 rearward movement drives the sliding block 7 along the chute 6 rearward movement, so as to support the plate 3 to the hinging point as the center of the turning, and according to the different use demand adjusting the support plate 3 of the turning angle, so that the support plate 3 can meet different angle depending on the need, the long strip block 1 with the base cavity 15, cavity 15 are respectively provided with two inner side walls of the guide groove 16, each guide groove 16 is provided with the inner wall of the guide block 17, the two guide block 17 through the horizontal frame between the 18 fixedly connected, the guide block 17 is located in the frame 18 at the rear of the, cavity 15 of the two sides of the front end of the bottom surface of the respectively and movably gear 19, two gear 19 are meshed with each other, the two gear 19 of the frame 18 the inner, frame 18 are respectively fixed on the two inner side walls of the mounting rack 20, each gear 19 with a rack 20 engaged with, one of the gear 19 of the rotating shaft passes through the long stick 1, passes through the long stick 1 of the gear 19 of the bottom end of the rotating shaft is fixed 2nd helical gear 21, 2nd helical gear 21 is located in the long vertical and horizontal relationships 1 below, frame 18 is fixed on the top surface level of the holding plate 22, cavity 15 is movably installed in the bottom in the inner wall of the two gear 19, two gear 19 are meshed with each other, each gear 19 and a rack 20 engaged, gear 19 rotating can make the frame 18 to move back and forth, drives the placing plate 22 is moved out of the cavity 15 or receiving 15 in, at the same time can also be according to different users leggy regulates the plate 22 extends the length of, and then meet the use requirements of users with different heights, so that users with different heights in use more comfortable, the long strip block 1 the rear end of the bottom surface of the bar 23, the bar 23 is provided with the inner wall of the movable block 24, the movable block 24 is movably installed 3rd the bottom surface of the helical gear 25, 3rd helical gear 25 with the 1st gear 14 engaged with the, 3rd helical gear 25 is fixed to the rotation shaft of the 4th helical gear 26, 4th helical gear 26 is located in the 3rd helical gear 25 above, the movable block 24 is fixed to one side connected with the push rod 27, push rod 27 the other end of the stick through the long 1, the movable block 24 fixed in one side of the bottom surface of the 1st fixed sleeve 28, push rod 27 and the other end is fixed to the bottom side of the fixed sleeve and the 2nd 29, 1st fixed sleeve 28 is provided with the inner wall of the rotating shaft 30, the rotating shaft 30 can be inserted through the 2nd fixed sleeve 29, the rotating shaft 30 is located in the long vertical and horizontal relationships 1 below, the rotating shaft 30 is fixedly mounted at one end of the 5th helical gear 31, 5th helical gear 31 with the 4th helical gear 26 engaged with, the movable block 24 and the bar 23 are matched with each other, the movable block 24 and the push rod 27 is fixedly connected, push rod 27 passes through the long strips 1, push rod 27 about can promote the reciprocating movement of the movable block 24 in the bar 23 left and right in the reciprocating movement, of the movable block 24 is movably installed 3rd the bottom surface of the helical gear 25, and 3rd helical gear 25 is fixed to the rotation shaft of the 4th helical gear 26, 4th helical gear 26 with the 5th helical gear 31 engaged with the, 5th helical gear 31 and the rotary shaft 30 is fixedly connected to, the rotating shaft 30 can drive the 5th helical gear 31, 4th helical gear 26 to rotate, and then drive the 3rd helical gear 25 rotates, the long strip block 1 are respectively fixed on the front and rear ends of the bottom surface of the installation guide sleeve 32, the guide sleeve 32 on the inner wall of the connecting shaft is provided with a 1st 33, 1st connecting shaft 33 can be inserted through the two guide sleeves 32, 1st connecting shaft 32 of the two ends of the front 6th helical gear 50, is located on the shaft 1st 33 of the rear end of the 6th helical gear 50 with the 3rd helical gear 25 engaged with the, located on the shaft 1st 33 the front end of the 6th helical gear 50 with the 2nd helical gear 21 engaged with, the horizontal bar 9 is provided with a front edge of the end of the 1st through hole 34, the connecting shaft 1st 33 can pass through the 1st through hole 34, 1st connecting shaft 33 of the front and rear ends respectively fixed 6th helical gear 50, located in 1st connecting shaft 33 of the front end of the 6th helical gear 50 with the 2nd helical gear 21 engaged with the, 3rd helical gear 25 that is located at the 1st connecting shaft 33 of the rear end of the 6th helical gear 50 engaged, 3rd helical gear 25 can drive the 1st rotary shaft 33, 6th helical gear 50 rotating, and then drive the 2nd helical gear 21 rotating. The support plate 3 and the long strip block 1 are vertical to each other state, to serve as a seat; when the requires the use of a reclining chair, a push rod 27 of the movable block 24 to the bar 23 to one side, so that the 3rd helical gear 25 with the 1st gear 14 engaged with the, 3rd helical gear 25 is fixed to the rotation shaft of the 4th helical gear 26, 4th helical gear 26 with the 5th helical gear 31 engaged with the, 5th helical gear 31 and the rotary shaft 30 is fixedly connected to, the rotating shaft 30 passes through the 1st fixed sleeve 28, 2nd fixed sleeve 29, 1st fixed sleeve 28 and movable block 24 is fixedly connected, 2nd fixed sleeve 29 and the push rod 27 is fixedly connected, and then the push rod 27 to move at the same time can drive the rotating shaft 30 to move, and a rotating shaft 30 can make the 5th helical gear 31 rotating, 5th helical gear 31 to rotate to drive the 4th helical gear 26, 3rd helical gear 25 rotating, 3rd helical gear 25 with the 1st screw 13 is fixedly connected, 1st screw 13 passes through the screw hole of the 1st 11, each guide rod 12 passes through a guide hole 10, 1st screw 13 rotating can make the horizontal bars 9 rearward movement, horizontal bars 9 and the connecting rod 8 is fixedly connected, the connecting rod 8 and the slide block 7 is fixedly connected, and then can drive the slide block 7 to the long strip block 1 move to the back, the slide block 7 and rod 1st 4 through a connecting rod between the 5 hinge connection, then the slide block 7 moves backward, the support plate 3 to the hinging point as the center of the folded backward, and adjusted according to the need to support the plate 3 of the turning angle, so that the user can rely on the support plate 3 more comfortable when, at the same time the push rod 27 pulling outward on the, so that the movable block 24 to the bar 23 at the inner side, so that the 3rd helical gear 25 that is located at the 1st connecting shaft 33 of the rear end of the 6th helical gear 50 to engage, and then the rotating shaft 30 can make the 3rd helical gear 25 rotating and drives the 6th helical gear 50 rotating, 6th helical gear 50 with the 1st connecting shaft 33 is fixedly connected, located in 1st connecting shaft 33 of the front end of the 6th helical gear 50 with the 2nd helical gear 21 engaged with the, 6th helical gear 50 to rotate to drive the 2nd helical gear 21 rotating, 2nd helical gear 21 with one of the gear 19 is fixedly connected to the rotating shaft, and then can drive the gear 19 rotating, gear 19 located in the cavity 15 in, two gear 19 are meshed with each other, each gear 19 and a rack 20 engaged with the, gear 19 rotating can make the frame 18 to move forward, the frame 18 drives the placing plate 22 is moved out of the cavity 15, then according to the user's leggy adjusted placing plate 22 extending length, then according to the user of different height adjustment, and is especially suitable for the user, the user is more comfortable in; slide block 7 continue rearward movement, the support plate 3 is folded to the horizontal state and with the strip-shaped block 1 are parallel to each other, frame 18 drives the placing plate 22 and extends to the outside, and then can be used as a bed for use, thus in use can meet the needs of different furniture use. The invention can be in the seat, reclining chair, bed between the conversion, can be adjusted according to different kinds of furniture demand, meet different use demand, saving the indoor space, and the cost is reduced, and at the same time act as a reclining chair when in use, the support plate 3 can be multi-angle adjustment, to meet the needs of different users rely on the angle adjustment, and can also be according to different user of height adjustable frame 18 extending length, make this invention serving as the reclining chair when in use, the user is more comfortable, and further improve the space utilization rate. 1st screw 13 with the 1st screw 11 thread, so that the 1st screw 13 has a self-locking function, can be further to the horizontal bar 9 fixed position, so that the structure is more stable.

Specifically, this embodiment is for example position long vertical and horizontal relationships 1 with one end of each of the two said supporting and 2 through the vertical plate 35 fixedly connected, located at the rear of the vertical plate 35 is provided in front of the 2nd through hole 36, two vertical plates 35 are respectively through the bearing between the movably arranged a 2nd connecting shafts 37, 2nd connecting shafts 37 can be inserted through the 2nd through hole 36, 2nd connecting shafts 37 and the vertical 35 are perpendicular to each other, 2nd connecting shafts 37 is provided for the rear end of the cross section of the T-shaped sliding hole 51, in the slide hole 51 is provided with a section of the inner wall of the T-shaped slide bar is 52, slide bar 52 is fixed to the rear end L-shaped rod 53, is located at the rear of the vertical plate 35 is provided with a plurality of behind the jack 54, a plurality of jack 54 to 2nd through hole 36 as a center of circle, L-shaped rod 53 can be inserted into the to a jack 54 in, 2nd connecting shafts 37 are respectively fixedly connected with the front end of the 2nd rod 38, two 2nd rod 38 are located in the two vertical plates 35 between the, each 2nd rod 38 is connected to the other end of the pumps 39 and one end of the, two vertical plates 35 of opposing surfaces are respectively provided with two sliding grooves 40, each vertical plates 35 on the two sliding grooves 40 are respectively located on the vertical plate 35 of the two side, each sliding groove 40 on the inner wall is provided with a sliding block 41, four sliding block 41 through the horizontal between the mobile plate 42 is fixedly connected, each radiation detector 39 the other end of the moving plate 42 hinged connected to one end of the, moving plate 42 and the bottom of the movably arranged a plurality of rollers 43. 2nd connecting shafts 37 and 2nd rod 38 is fixedly connected, 2nd connecting shafts 37 rotating can drive the 2nd rod 38 rotating, 2nd rod 38 with the pumps 39 hinged, pumps 39 with the mobile plate 42 hinged, 2nd rod 38 rotates and drives the moving plate 42 to move up and down, at the same time will slide bar 52 pulled backward for the L-shaped rod to 53 rearward movement, a connecting shaft 37 after the end of the rotation, the L-shaped rod 53 is inserted into the jack 54 in, the 2nd connecting shafts 37 fixed, and will move the board 42 is fixed to the height of the, moving plate 42 bottom installation roller 43, moving plate 42 is moved to the lower roller 43 when exposed, can promote the long strip block 1 the mobile, in the movement of the more labor-saving.

In particular, this embodiment is for example position long vertical and horizontal relationships 1 the front end of the two said supporting and 2 the front are respectively fixedly mounting level of the rod 44, the two telescoping rod 44 through the front end of the long strip between the support block 45 is fixedly connected, the support block 45 can with the top end of the frame 18 contact with the bottom surface of the, rod 44 with the supporting column 2 by the diagonal between the 46 fixedly connected. Frame 18 drives the placing plate 22 extends out of the rear, rod 44 extending, drive the support block 45 to move forward, through the support block 45 with the frame 18 contact with, can be pair of frame 18 to be supported, so that the stress is more uniform, and the structure is more stable, in use the using effect is better.

Further, the embodiment of the cavity 15 is provided with two at the top end of the groove 47, the two grooves 47 are respectively located in the cavity 15 of the two sides, the holding plate 22 is fixed to the rear end of the top two movable blocks 48, the two movable blocks 48 are respectively positioned at the placing plate 22 on both sides of the, each movable blocks 48 can be inserted into to the groove 47 in and along the groove 47 mobile. The moving block 48 is inserted into the groove 47 in, which are arranged on the plate 22 in a uniform stress in the course of moving, in use more stable.

Further, the long stick of the embodiment of 1 the rear end of the support platform is fixed level 49. The support plate 3 is folded to the horizontal state with the supporting table 49 contacted with the top surface, the support plate can be 3 further support, so that the support plate 3 stress more uniform, more stable in use.

Further, the supporting portion of the embodiment of 2 fixed at the bottom of mounting mat 55, the support plate 3 and the other end is fixedly mounted in front of the neck 56. A supporting and 2 the bottom end of the mounting mat 55, can prevent the supporting column 2 in use sliding, the support plate 3 is arranged in front of the other end of the neck 56, can make users more comfortable in use.

Finally it should be understood that: the above embodiment is used for the execution of the present technological scheme of this invention, rather than to its limitations; although in the light of the aforesaid embodiment of the invention performs detailed explanation, the ordinary technical personnel in the field is to be understood that: its still can be recorded to the aforesaid various embodiments technical proposal of modification, or to a portion of the technical characteristics of the equivalent replacement; these modification or replacement, does not make the corresponding technical scheme of the present invention essential from the technical scheme of the embodiment of the spirit and scope of.