role door volume Self-Closing.

[0001] The invention relates to a self-closing an upper and a lower tape roll role door volume with a comprehensive first band member and a second roll of tape about a hinging axis pivotable second band portion. It is between the two end gears and the second band portion are each directed towards a closed position for generating conversion group of resetting effective closing force.

[0002] known role door volume is known, for example, from WO [...] Such a 2006/036 044. The groups of resetting each have a sleeve-shaped body having a in its wall arranged on helical, connecting link guide. In the assembled state, a pin engages in this connecting link guide in this way a cam mechanism for converting a linear and forms a spring tension in a closing force. Such Locking mechanisms is sumptuously into finished and mount.

[0003] Against this background of the invention is based on the problem, a self-closing and to be manufactured with a simply indicate role door volume Locking mechanisms to be mounted.

[0004] the term "closing force"-in so far as this application Under is not explicitly noted otherwise-than force acting between the band parts to understand, a torque acting in the closing direction the produce.

[0005] the subject matter of the invention is a self-closing and solve this problem with a an upper and a lower tape roll role door volume according to claim 1 and a second band portion comprising tape roll, about a hinging axis from a closed position to an opening angle pivotable second band portion. Between the upper roll of tape and the second band portion is between the lower roll of tape and the second band portion and an upper group of resettinggroup of resetting effective is a lower. By groups of resetting each, independently of one another for the closed position the two is produced directed towards closing force. according to inventiongroup of resetting has a non-rotatably to the second band portion connected the upper upper swivelling cam, a non-rotatably and displaceable along the axis of rotation in the upper tape roll with an axial end face against the upper sliding cam and a sliding cam upper an associated axial end face of the upper pressing upper spring element on swivelling cam. Accordingly group of resetting a rotation to the second band portion comprises the lower lower swivelling cam, a non-rotatably and displaceable along the axis of rotation in the lower tape roll with an axial end face against the lower sliding cam and a lower sliding cam an associated axial end face of the lower swiveling cam urging lower spring element. In the axial end faces is generated by the spring elements each have at least one slope for converting the linear spring forces into a closing force provided. It slope in the direction of rotation based on a rotational movement of the cam means an inclined surface. This can a straight line with a slope of the associated cam or, i.e. in the direction of rotation not inclined surface co-operation. The forces between the individual components Transferring exclusively on pressure, so that the can be plugged together without limitation linearly groups of resetting of assembling.

[0006] non-rotatably on at least one groove is preferably the upper sliding cam and displaceable along the axis of rotation and the lower sliding cam in the upper tape roll guided non-rotatably on at least one groove in the lower tape roll guided along the axis of rotation. Any groove interacts here with an associated bulge together. The grooves without limitation to the sliding cam or can be arranged on the inside of the associated tape roll. The interaction is more advantageous, preferably in approximately uniformly distributed around the circumference, groove/tongue connections. These can also be so arranged that the sliding cam only in the correct orientation in the belt rollers can be introduced. Therefore incorrect assembly is ruled out. To are milled to simplify the preparation can be produced are in alignment, grooves, which in the upper tape roll, with the grooves on the inner surface of the lower tape roll, so that these in one working step.

[0007] Whereas it is at least one spring element constituted by Belleville washers. Disc springs distinguish themselves by their compact form from and can, depending on requirements, with progressive, degressive and linear spring characteristics are produced.

[0008] In an especially preferred embodiment the axial end faces are so formed and of the cooperating upper or lower swivelling cam sliding cam that the generated closing force is dependent on the opening angle. Prevention can be thus adjusted according to demand. A large opening area with no or only a small, for example, can be provided closing force, a negative closing force at particularly high levels but also an especially large closing force for blocking the door or opening angles in the case of small opening angles, so as to overcome the resistance of a lock latch.

[0009] Preferably, the closing force exerted by the upper and from the lower group of resetting at least in partial regions of the closing force exerted on a different amount group of resetting opening angle. If groups of resetting in different angular ranges are active-i.e. the two produce a closing force

-and/or apply different starch closing forces , allows a particularly simple adjustment of the closing force characteristic.

[0010] In a preferred embodiment of the sliding cam face arranged concentrically to the axis of rotation and the swivelling cam groups of resetting each have a hollow-cylindrical portion on the two. The hollow cylindrical Section is for stabilising and/or for guiding or penetrated on the inside by the same component or another component be filled.

[0011] It be formed by axially abutting end faces of the sliding cam, with advantage, the annular end surfaces of said hollow cylindrical sections and the swivelling cam. The end surfaces can have any desirable profile in the direction of rotation, are, however, not usually inclined in the radial direction. The width of the circular ring in the radial direction is not larger than the preferred radius of the remaining therein cylindrical cavity. For at a pivoting movement, the relative speeds of the slide one on the other, a swivelling and sliding cam in approximately equal to the outside and toward the inside, so even the approximately uniformly occur abrasion features.

[0012] in each case, the annular end surfaces in the circumferential direction with at least a profile Whereas it a bevel with pitch and at least a plateau without pitch on. This are leaving particularly simple angular ranges with restoring force-in which a slope is effective-and angular ranges without restoring force

-where a plateau is effective-Set. A swivelling cam Are each equipped with a sloping portion and an associated sliding cam, so these preferably have the same pitch on, so that these can lie flat against one another during the effectiveness of the slopes. Such a profile can be simply by casting or cutting from a full block of material about manufacturing by fabrication.

[0013] are particularly preferably the transitions between slope and Plateau formed to be rounded. Thus when operating a pleasant continuous transition occurs. A sudden snapping groups of resetting is prevented the.

[0014] Whereas it to the swivelling cam and on the sliding cam are group of resetting Plateau in other angular ranges of the opening angle of the upper bevel and the lower than at a swivelling and sliding cam group of resetting effective. This is increasing as with two identical effective variable Set closing force profile with simple means the groups of resetting.

[0015] In one variant the slope is the end face of a cam via a larger or smaller angular range of the opening angle of the upper group of resetting as a slope formed on the cams of the lower group of resetting. Both slopes from the closed position with 0° can be effective, for example, wherein a first slope is steeper and terminates at a smaller angle already formed. Due to the larger pitch is also a relatively large spring tension exerted by these amount of closing force at identical. As from the end of the steep slope is in this no longer effective and carries no longer for closing force. The second, shallower slope formed only a small closing force is effective over a larger angular region and is putting on.

[0016] Alternatively group of resetting and the swivelling cam are both the swivelling cam the upper as well as the sliding cam group of resettinggroup of resetting and the lower the sliding cam group of resetting identical in each case the upper or the lower mirror-symmetrical design. The group of resetting by a displacement angle relative to the swivelling of the swivelling cam the upper group of resetting twisted is non-rotatably on the second band portion set lower. The sliding cam Are respectively aligned or arranged symmetrically, in different angular ranges are also effective in this variant the groups of resetting. This may be used, however, on uniformly produced parts. This can simplify the manufacturing process and make it cheaper. In order to arrange the two swivelling cam is rotated by a constant displacement angle with respect to one another, many possibilities for this. The two swivelling cam [...] can be formed as end portions of a single-piece wrist pin, which can be fastened non-rotatably on the central band part. Another possibility is that the two swivelling cam by means of a spur gear toothing or gear coupling to each other or to the second band portion are attached or associated, a intermediate piece. In this way is subsequently-variably Set would leave the displacement angle-also.

[0017] between 0° and 10° lie in a especially preferred opening angle rangegroups of resetting with slopes and shall exercise both the cams from each other at such a restoring force. From a first angle-in particular 10°

-the cams lie groups of resetting with plateaus each other at one of the two, so that these no longer exert restoring force. 45 °-the cams lie From a second opening angle-in particular with each other at and no restoring force exercise both plateaus groups of resetting from 180° to a maximum opening angle-in particular more to. Alternatively, from a third angle groups of resetting be exerted a negative restoring force by at least one of the, so that the door thereof in an open position is stopped.

[0018] sliding camswiveling cam and the end face of the associated lie Whereas it the end face of the case of at least one completely circumferentially group of resetting each other at in the closed position. This is located in a force-free rest position the group of resetting , which particularly is material-carefully for the storage.

[0019] Preferably, between the first and the second band portion at least one bearing bush arranged band portion, which is rotatable at least with respect to a band portion. Such a bearing bush can receive these Low the forces of band connection and lead away. This the reset mechanism can operate undisturbed role door volume Self closing of the. Alternatively or additionally can also be provided a rolling bearing. Optionally the bearing bush can also be constructed to provide a defined damping force. This may lead to an uncontrolled accelerating the door leaf by the restoring forces be avoided.

[0020] The invention will be described by means of the following, are only explained drawings representing an embodiment. Shown schematically are:

Fig. role door volumegroups of resetting contained 1 a according to the invention with an exploded view of the self-closing,

Fig. role door volume with indicated 2 plan view of a door frame and door leaf in various opening positions according to the invention,

Fig. role door volume with ruptured belt rollers 3 a according to the invention,

Fig. 3 and 4 detail view from Fig.

Fig. 5A to 5D a schematic function representation of the sliding cam in dependence on the angle of rotation.

[0021] 1 shows a self-closing according to the invention in exploded view role door volume Fig. The. This a first band portion belongs 2, 1 a and 1 b which comprises an upper and a lower tape roll roll of tape about a hinging axis X pivotable second band portion 3 a 2. Both band parts, 3 each have fixing means for fixing to a door leaf or on a door frame 4. In the plan view is from the first band member 2 with a door leaf 2 Fig. 5 and the second band portion 3 with a door frame indicated 6 connected. The band parts 2, 3 are represented by an opening angle φ pivotable a closed position. Is an opening angle of about 60° and a dash and dot line a maximum opening angle Dashed from about 180° represented.

[0022] between the upper roll of tape 1a and the second band portion between the lower roll of tape 7a is a top 3 and 1b and group of resetting the second band portion 7b 3 a lower effective group of resetting. group of resettingaccording to invention the upper faces 8a 3 connected in a rotationally fixed manner to the second band portion 7a a swivelling cam top, a non-rotatably along the axis of rotation X in the upper tape roll 9a and 9a with the upper sliding cam 1a displaceable upper sliding cam 10a against a an associated axial end face 11a of the upper one axial face 8a presses upper spring element 12a on swiveling cam. Accordingly group of resetting non-rotatably to the second band portion 3 a faces the lower lower swivelling cam 7b 8a, a non-rotatably along the axis of rotation X in the lower tape roll 1 b with the lower sliding cam 9b and a displaceable lower sliding cam 9b 10b 11b of the lower an associated axial end face against an axial end face 8b 12b on swiveling cam urging lower spring element. In the axial end faces is by the spring elements each have at least one slope 13 for converting the 12a, 12b in a closing force (closing torque) provided linear spring forces generated. 8a and 8b are swivelling cam The upper swivelling cam 14 formed in one piece as the lower end portions of a toggle pin. The hinge pin 15 of the second hinge part 3 in the central tape roll 14 may by means of a grub screw 16 that is to be screwed into a threaded bore 17 are fastened in a rotationally fixed manner. This the hinge pin 14 has a shallow recess 18 from approximately centrally. The width of the recess 18 in the direction of the pivot axis X is 17 adapted to the diameter of the grub screw, so that the hinge pin 14 is correctly centered automatically upon mounting.

[0023] 9a and 9b are each attached to the lower sliding cam The upper sliding cam 19 in the upper or in the lower roll of tape two grooves 1a, 1b slidably guided non-rotatably along the axis of rotation X. This the sliding cam face 9a, 9b respectively on the wall side, two projections 20 on, which engage in the grooves 19.

[0024] The upper and lower spring element 12a, 12b are formed from a stack of Belleville washers. This be braced in each case by means of a retaining screw 21a, 21b against the associated sliding cam 9a, 9b, wherein the retaining screw 21a, 21b with a head mounted on the outside in an associated internal thread of the upper and lower tape roll thread 1a, 1b can be screwed.

[0025] in the assembled state according to the invention 3 shows a self-closing role door volume Fig. The, wherein the belt rollers 1a, 1b, 15 are broken up. In order to improve the visibility of the remaining components are the inside spring elements 12a, 12b, as well as the between the hinge pin 14 and the outer belt rollers 1a, 1b shells arranged 22a, 22b indicated only as a broken line. One comparative viewing with the Fig. 4, which shows the lower group of resetting 7b, it takes out that the sliding cam 9a, 9b are formed as concentrically with the pivot axis X arranged hollow cylinder. Zur Stabilization they are on the inside by the retaining screws 21a, 21b penetrated. Even the swivelling cam 8a, 8b have a hollow cylindrical portion concentrically to the pivot axis X on, the is penetrated on the inside by a solid portion of the wrist pin 14. As 4 is to be taken in particular of the Fig., this inside massive Section is also as an abutment for the sliding cam 9a, 9b serve, so that the roller tape is additionally stabilized. The axially abutting end faces 10a, 10b, 11a, 11b of the sliding cam 9a, 9b and the swivelling cam 8a, 8b are formed by annular end surfaces of said hollow cylindrical sections. The annular end surfaces each have a profile with two slopes in the circumferential direction 13 with pitch and two interposed therebetween without gradients on plateaus 23. The transitions between the diagonals are formed to be rounded and the plateau 24 23 13. 4, furthermore is particularly clearly visible in the Fig. that the hinge pin 14 with as a swivelling cam 8a, 8b end sections formed with respect to the sliding cam 9a, 9b has a reduced outer diameter, so that between hinge pin 14 and the outer belt rollers 1a, 1b a distance for the bearing bush 22a, 22b remains. This at least with respect to the articulating pin 14 or the outer belt rollers is 1a, 1b conducts role door volume sure low resistance disposed so that it can be twisted and the holding forces from the.

[0026] The Fig. groups of resetting 5A 5D schematically show the kinematics of the 7a to Fig., 7 b. Axially abutting end faces 10a are plotted the peripheral profiles of the, 10b, 11a, 11b the outer sliding cam 9a, 9b and the swivelling cam integrally mounted on a pivot pin 14 integrally formed in the middle as 8a, 8 b. 360° as solid line profiles are represented within the first The. The sliding cam 9a, 9b are by the spring elements 12a, 12b with a spring force F_a, F_{b acted upon}, which is directed towards the centre. It can be seen that the profiles each with slopes 12a by the spring elements 13 for converting the, 12b generated linear spring forces Fa, Fb in a closing force L_a, L_{b are} provided. The slopes at plateau Close 23 without pitch at 13, wherein the transitions are rounded formed 24.

[0027] The total closing force L_ges, which results from the sum of the 7a and 7b through the top by the lower group of resettinggroup of resettingclosing forces L_{a generated,} L_b, is dependent on the opening angle φ. It is achieved by the special arrangement of the 7a groups of resetting This, 7b. The envisaged Arrangement a result that the closing force exerted by the upper group of resettinggroup of resetting 7a 7b L_{a and} from the lower closing force exerted at least in some areas_{have a different amount of the opening angle L} b φ. In Fig. 5A, which represents an opening angle of 0° for the kinematics φ, the sliding cam 7a 8a 9a lie and the swivelling cam group of resetting exclusively in each case with a bevel 13 each other at the top, so that the spring force provided by the upper spring element 12a is_{converted into an upper return force La F} a. Swivelling cam 7b 8b 9b and sliding cam are located in a special rest position the lower group of resetting , wherein the end faces peripherally completely rest against each other. In this position no restoring force is generated L_b.

[0028] the embodiments the peripheral profiles of the axial end faces 10a are In, 10b, 11a, 11b of the upper and lower swiveling cam 8a, 8b and 9a sliding cam of the upper and lower, 9b respectively identical or mirror-symmetrical. The closing forcesgroups of resetting generated by the different amount of the L_a, L_{b is} thereby achieved that although the upper and lower sliding cam 9a, 9b are arranged symmetrically in alignment, while, however, the profiles of the end faces 11a, 11b of the two swivelling cam 8a, 8b are arranged around a displacement angle α twisted against each other. 8a and 9a of the upper on the swivelling cam are This group of resetting 7a the slopes 13 and the sliding cam 23 in other angular ranges of the opening angle than at the plateau 8b and 9b of the lower effective φ group of resetting swivelling cam 7 b sliding cam.

[0029] the kinematics of the 7a is to Succeeds groups of resetting , 7b are explained. The 5a represented role door volume Will from the in closed position by a displacement of the open-this will Fig. profile 11a, 11b of the swivelling cam 8a, 8b in positive p-directioe-the lower swivelling cam 8b at an opening angle is 0° to an associated exclusively with a bevel 13 φ greater slope sliding cam 9b to 13 of the lower, so that here too an additional_{closing force is generated from the spring force Fb L} b. In a first angular range are both groups of resetting 7a, 7b effectively. From a-in the upper 10° φ of swivelling cam 5b Fig. 8a represented-opening angle comes with an associated Plateau sliding cam 23 by means of a plateau 9a in contact 23 of the upper. The group of resetting 7a generated closing force disappears_{through the upper L} a. Meanwhile, 7b still effectively the lower is group of resetting.

[0030] From a second, 45° the profiles 5c represented in Fig. groups of resetting 7a lie φ of both opening angle, 7b respectively with plateaus each other at 23. It no restoring forces act L_a, L_b, L_ges.

[0031] Fig. groups of resetting 7a shows the 5d, in a maximum opening position with an opening angle 180° φ of 7b, still no restoring force is_{exerted in which L} ges. It can be seen that at a even larger opening angle with a negatively inclined chamfer 7a group of resetting φ the upper 13 takes effect can be generated, so that a negative closing force L_{a, in order to} enclose a door. Through the suitable selection of the profiles of both groups of resetting L_a, L_{b can}closing force characteristic φ dependent from the opening angle to the needs of the user be adapted flexibly. Possible termination may present a particularly simple-also subsequently thereto, the displacement angle α by twisting swiveling cam 8a at least one, with respect to the second band portion 8b to change 3.