Window or door having a carriage arrangement with roller bearing-guided force dissipation in the displacement direction

Abstract

A carriage arrangement has a driving bar arrangement and a carriage. The carriage has a roller part with a plurality of running rollers. The roller part is displaceable transversely to the longitudinal extent of the carriage with respect to a wing part which can be mounted immovably on a wing. A driving bar of the driving bar arrangement has a control projection which engages in a control slot which is formed obliquely to the longitudinal extent of the carriage. To guide the roller part on the wing part is provided a first roller bearing guide which extends transversely to the longitudinal extent of the carriage. The first roller bearing guide has rolling bodies which are supported both on the wing and roller part so forces acting in the direction of the longitudinal extent of the carriage are channelled away from the wing part into the roller part with low friction.

Claims

1. A carriage arrangement for displacing a sash of a window or door in a displacement direction that is parallel to a main plane of a fixed frame of the window or door and for shifting the sash transversely to this main plane in a transverse direction while preventing movement of the sash relative to the fixed frame in a vertical direction, the transverse direction being perpendicular to the displacement direction and the vertical direction being perpendicular to the displacement direction and the transverse direction, wherein the carriage arrangement comprises the following: a) a driving bar arrangement which can be arranged on the sash and which has a driving bar movable in a groove peripheral direction; b) a carriage having a sash part which can be fastened to the sash and a roller part which can be shifted transversely to the main plane and has a plurality of rollers for displacement in the displacement direction; wherein the driving bar arrangement comprises a control projection which is arranged or formed on the driving bar and which is guided in a control slot in the roller part, which control slot is formed at least sectionally obliquely to the main plane, wherein a movement of the driving bar causes the roller part to shift transversely to the main plane; c) a first roller bearing guide via which the sash part is supported transversely to the main plane on the roller part during the movement in order to offload the weight of the sash onto the roller part; wherein the sash part is supported on the roller part in the displacement direction via the first roller bearing guide wherein forces occurring on the roller part in the displacement direction are configured to be introduced into the sash part via the first roller bearing guide; wherein the first roller bearing guide has a first roller bearing bed on the sash part and a second roller bearing bed on the roller part, and wherein a plurality of rolling bodies of the first roller bearing guide are between the first and second roller bearing beds and are configured to allow movement of the sash part relative to the roller part in the transverse direction while resisting movement and transferring forces of the sash part relative to the roller part in the displacement direction; wherein the pluralities of rolling bodies are configured to transfer a vertical force along the vertical direction between the first and the second roller bearing beds; wherein the pluralities of rolling bodies are configured to transfer a displacement force along the displacement direction between the first and the second roller bearing beds; and wherein the pluralities of rolling bodies are configured not to transfer a transverse force along the transverse direction between the first and the second roller bearing beds.

2. The carriage arrangement according to claim 1, wherein the first roller bearing guide has a bearing part with the plurality of rolling bodies arranged thereon and a support surface curved in cross-section, wherein the first roller bearing guide further comprises a support rail which is supported on the support surface, and wherein the forces occurring in the displacement direction can be dissipated via the support rail abutting the bearing part.

3. The carriage arrangement according to claim 2, wherein the support surface in cross-section is in the form of a circular arc being a semicircle.

4. The carriage arrangement according to claim 2, wherein the bearing part is held non-pivotably about its longitudinal axis by a form-fit on the roller part or sash part.

5. The carriage arrangement according to claim 2, wherein the support rail has non-fixed free ends in its longitudinal direction.

6. The carriage arrangement according to claim 5, wherein the support rail is inserted unattached into a recess in the carriage.

7. The carriage arrangement according to claim 1, wherein the first roller bearing guide comprises a ball bearing extending in the longitudinal direction of the first roller bearing guide, wherein the plurality of rolling bodies of the ball bearing are guided in two opposite ball bearing beds which each have a groove that in cross-section is in the form of a circular arc, being a semicircle, wherein the forces occurring in the displacement direction can be passed on via the plurality of rolling bodies and grooves.

8. The carriage arrangement according to claim 1, wherein the first roller bearing guide comprises a needle bearing.

9. The carriage arrangement according to claim 8, wherein the first roller bearing guide has a needle bearing bed on the surface of which the plurality of rolling bodies being needles of the needle bearing are movable, wherein the surface is formed at an angle (w) of more than 0? and less than 180? in relation to the displacement direction in order to pass on the forces occurring in the displacement direction.

10. The carriage arrangement according to claim 1, wherein the carriage arrangement comprises the following: d) a second roller bearing guide via which the sash part is supported transversely to the main plane on the roller part during the movement in order to offload the weight of the sash onto the roller part; wherein the second roller bearing guide is spaced apart from the first roller bearing guide in the direction of the longitudinal axis of the roller part, and wherein the sash part is supported on the roller part via the second roller bearing guide in the displacement direction, wherein forces occurring on the sash part in the displacement direction can be introduced into the roller part via the second roller bearing guide.

11. The carriage arrangement according to claim 10, wherein the second roller bearing guide is designed identically to the first roller bearing guide.

12. The carriage arrangement according to claim 1, wherein the roller part is guided on the sash part via a form-fit, being a dovetail-shaped form-fit, wherein the roller part is insertable into the sash part transversely to the main plane for assembling the carriage.

13. The carriage arrangement according to claim 1, wherein the sash part is integrally formed and has a straight guide slot through which the control projection is guided.

14. The carriage arrangement according to claim 1, wherein the driving bar arrangement is fastened to the carriage in a tool-free, non-detachable manner.

15. The window or door comprising the fixed frame and the sash and also the carriage arrangement according to claim 1, wherein by means of the carriage arrangement, the sash can be displaced in the displacement direction parallel to the main plane of the fixed frame and can be shifted transversely to this main plane.

16. A carriage arrangement for displacing a sash of a window or door in a displacement direction that is parallel to a main plane of a fixed frame of the window or door and for shifting the sash transversely to this main plane, wherein the carriage arrangement comprises the following: a) a driving bar arrangement which can be arranged on the sash and which has a driving bar movable in a groove peripheral direction; b) a carriage having a sash part which can be fastened to the sash and a roller part which can be shifted transversely to the main plane and has a plurality of rollers for displacement in the displacement direction; wherein the driving bar arrangement comprises a control projection which is arranged or formed on the driving bar and which is guided in a control slot in the roller part, which control slot is formed at least sectionally obliquely to the main plane, wherein a movement of the driving bar causes the roller part to shift transversely to the main plane; c) a first roller bearing guide via which the sash part is supported transversely to the main plane on the roller part during the movement in order to offload the weight of the sash onto the roller part; wherein the sash part is supported on the roller part in the displacement direction via the first roller bearing guide wherein forces occurring on the roller part in the displacement direction can be introduced into the sash part via the first roller bearing guide; wherein the first roller bearing guide has a bearing part with rolling bodies arranged thereon and a support surface curved in cross-section, wherein the first roller bearing guide further comprises a support rail which is supported on the support surface, and wherein the forces occurring in the displacement direction can be dissipated via the support rail abutting the bearing part; and wherein the bearing part is held non-pivotably about its longitudinal axis by a form-fit on the roller part or sash part.

17. A carriage arrangement for displacing a sash of a window or door in a displacement direction that is parallel to a main plane of a fixed frame of the window or door and for shifting the sash transversely to this main plane, wherein the carriage arrangement comprises the following: a) a driving bar arrangement which can be arranged on the sash and which has a driving bar movable in a groove peripheral direction; b) a carriage having a sash part which can be fastened to the sash and a roller part which can be shifted transversely to the main plane and has a plurality of rollers for displacement in the displacement direction; wherein the driving bar arrangement comprises a control projection which is arranged or formed on the driving bar and which is guided in a control slot in the roller part, which control slot is formed at least sectionally obliquely to the main plane, wherein a movement of the driving bar causes the roller part to shift transversely to the main plane; c) a first roller bearing guide via which the sash part is supported transversely to the main plane on the roller part during the movement in order to offload the weight of the sash onto the roller part; wherein the sash part is supported on the roller part in the displacement direction via the first roller bearing guide wherein forces occurring on the roller part in the displacement direction can be introduced into the sash part via the first roller bearing guide; wherein the first roller bearing guide has a bearing part with rolling bodies arranged thereon and a support surface curved in cross-section, wherein the first roller bearing guide further comprises a support rail which is supported on the support surface, and wherein the forces occurring in the displacement direction can be dissipated via the support rail abutting the bearing part; wherein the support rail has non-fixed free ends in its longitudinal direction; wherein the support rail is inserted unattached into a recess in the carriage.

18. A carriage arrangement for displacing a sash of a window or door in a displacement direction that is parallel to a main plane of a fixed frame of the window or door and for shifting the sash transversely to this main plane, wherein the carriage arrangement comprises the following: a) a driving bar arrangement which can be arranged on the sash and which has a driving bar movable in a groove peripheral direction; b) a carriage having a sash part which can be fastened to the sash and a roller part which can be shifted transversely to the main plane and has a plurality of rollers for displacement in the displacement direction; wherein the driving bar arrangement comprises a control projection which is arranged or formed on the driving bar and which is guided in a control slot in the roller part, which control slot is formed at least sectionally obliquely to the main plane, wherein a movement of the driving bar causes the roller part to shift transversely to the main plane; c) a first roller bearing guide via which the sash part is supported transversely to the main plane on the roller part during the movement in order to offload the weight of the sash onto the roller part; wherein the sash part is supported on the roller part in the displacement direction via the first roller bearing guide wherein forces occurring on the roller part in the displacement direction can be introduced into the sash part via the first roller bearing guide; wherein the first roller bearing guide comprises a ball bearing extending in the longitudinal direction of the first roller bearing guide, wherein a plurality of balls of the ball bearing are guided in two opposite ball bearing beds which each have a groove that in cross-section is in the form of a circular arc, being a semicircle, wherein the forces occurring in the displacement direction can be passed on via the plurality of balls and grooves.

19. A carriage arrangement for displacing a sash of a window or door in a displacement direction that is parallel to a main plane of a fixed frame of the window or door and for shifting the sash transversely to this main plane, wherein the carriage arrangement comprises the following: a) a driving bar arrangement which can be arranged on the sash and which has a driving bar movable in a groove peripheral direction; b) a carriage having a sash part which can be fastened to the sash and a roller part which can be shifted transversely to the main plane and has a plurality of rollers for displacement in the displacement direction; wherein the driving bar arrangement comprises a control projection which is arranged or formed on the driving bar and which is guided in a control slot in the roller part, which control slot is formed at least sectionally obliquely to the main plane, wherein a movement of the driving bar causes the roller part to shift transversely to the main plane; c) a first roller bearing guide via which the sash part is supported transversely to the main plane on the roller part during the movement in order to offload the weight of the sash onto the roller part; wherein the sash part is supported on the roller part in the displacement direction via the first roller bearing guide wherein forces occurring on the roller part in the displacement direction can be introduced into the sash part via the first roller bearing guide; wherein the first roller bearing guide comprises a needle bearing; wherein the first roller bearing guide has a needle bearing bed on the surface of which the needles of the needle bearing are movable, wherein the surface is formed at an angle (w) of more than 0? and less than 180? in relation to the displacement direction in order to pass on the forces occurring in the displacement direction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1a shows an isometric view of a door with schematically illustrated fixed frame and fittings of a sash of the door, the fittings comprising two carriage arrangements.

(2) FIG. 1b shows an exploded view of one of the carriage arrangements.

(3) FIG. 1c shows an isometric view of a part of the carriage arrangement from FIG. 1b in the mounted state.

(4) FIG. 1d shows the carriage arrangement from FIG. 1c in a longitudinal section with a first roller bearing guide.

(5) FIG. 1e shows the carriage arrangement from FIG. 1d in cross-section in the region of the first roller bearing guide, the first roller bearing guide having a bearing part.

(6) FIG. 1f shows an isometric view of the bearing part from FIG. 1e, wherein the bearing part has ball raceways.

(7) FIG. 1g shows a further isometric view of the bearing part from FIG. 1f with grooves in the ball raceways which are visible in dashed lines.

(8) FIG. 1h shows the bearing part from FIG. 1g in cross-section or in a view of the h-h sectional plane from FIG. 1i.

(9) FIG. 1i shows the bearing part according to FIG. 1h in a view of the i-i sectional plane from FIG. 1h.

(10) FIG. 2a shows an exploded view of a further carriage arrangement with a first roller bearing guide shortened in its longitudinal directions and second roller bearing guide.

(11) FIG. 3a shows an exploded view of a further carriage arrangement which corresponds to the carriage arrangement of FIGS. 1a-i, wherein the roller bearing guides are arranged rotated by 180? about their longitudinal axes.

(12) FIG. 4a shows an exploded view of a further carriage arrangement which corresponds to the carriage arrangement of FIGS. 1a-i, wherein support rails of the roller bearing guides are fastened centrally.

(13) FIG. 5a shows an exploded view of a further carriage arrangement, wherein roller bearing guides of the carriage arrangement each have a ball bearing.

(14) FIG. 5b shows a side view of the carriage of the carriage arrangement according to FIG. 5a, wherein the roller bearing guides of the carriage are shown in section.

(15) FIG. 6a shows a side view of a further carriage which corresponds to the carriage of FIG. 5b, wherein roller bearing guides are provided in the form of needle bearings in a V configuration.

(16) FIG. 7a shows a side view of a further carriage corresponding to the carriage of FIG. 5b, wherein a first roller bearing guide with a ball bearing is provided and a second roller bearing guide with a needle bearing is provided.

(17) FIG. 8a shows a side view of a further carriage corresponding to the carriage of FIG. 5b, wherein two roller bearing guides with needle bearings are provided.

(18) FIG. 9a shows a side view of a further carriage corresponding to the carriage of FIG. 5b, wherein two roller bearing guides with different needle bearings are provided.

(19) FIG. 10a shows a side view of a further carriage which corresponds to the carriage of FIG. 5b, wherein a first roller bearing guide has a combination of needle bearings and ball bearings and a second roller bearing guide has a needle bearing.

(20) FIG. 11a shows an exploded view of a control projection of the carriage arrangement of FIGS. 1a-i, wherein the control projection has a roller-bearing-guided roller to guide the control projection in a straight slot in a sash part of the carriage and has a roller-bearing-guided roller to guide the control projection in an oblique slot in a roller part of the carriage.

(21) FIG. 11b shows an isometric view of the control projection from FIG. 11a in the mounted state.

(22) FIG. 11c shows a view of the control projection from FIG. 11b in longitudinal section.

(23) FIG. 12a shows an exploded view of a control projection according to FIG. 11a, wherein the control projection has a roller-bearing-guided roller to guide the control projection in a straight slot in the sash part and has a fixed roller to guide the control projection in an oblique slot in the roller part.

(24) FIG. 12b shows an isometric view of the control projection from FIG. 12a in the mounted state.

(25) FIG. 12c shows a view of the control projection from FIG. 12b in longitudinal section.

(26) FIG. 13a shows an exploded view of a control projection according to FIG. 12a, wherein the control projection has a plain-bearing-guided roller to guide the control projection in a straight slot in the sash part and has a fixed roller to guide the control projection in an oblique slot in the roller part.

(27) FIG. 13b shows an isometric view of the control projection from FIG. 13a in the mounted state.

(28) FIG. 13c shows a view of the control projection from FIG. 13b in longitudinal section.

(29) FIG. 14a shows an exploded view of a control projection according to FIG. 13a, wherein the control projection has a plain-bearing-guided roller to guide the control projection in an oblique slot in the roller part.

(30) FIG. 14b shows an isometric view of the control projection from FIG. 14a in the mounted state.

(31) FIG. 14c shows a view of the control projection from FIG. 14b in longitudinal section.

(32) FIG. 15a shows an exploded view of a control projection according to FIG. 13a, wherein the control projection has a variant of a plain-bearing-guided roller to guide the control projection in a straight slot in the sash part and has a fixed roller to guide the control projection in an oblique slot in the roller part.

(33) FIG. 15b shows an isometric view of the control projection from FIG. 15a in the mounted state.

(34) FIG. 15c shows a view of the control projection from FIG. 15b in longitudinal section.

(35) FIG. 16a shows an exploded view of a control projection according to FIG. 15a, wherein the control projection has a sleeve to provide a distance from a roller bearing and has a roller-bearing-guided roller to guide the control projection in an oblique slot in the roller part.

(36) FIG. 16b shows an isometric view of the control projection from FIG. 16a in the mounted state.

(37) FIG. 16c shows a view of the control projection from FIG. 16b in longitudinal section.

(38) FIG. 17a shows an exploded view of a carriage arrangement according to FIGS. 1a-i, wherein clips are provided to connect a driving bar arrangement to the carriage.

(39) FIG. 17b shows a view of a cross-section of the carriage arrangement from FIG. 17a in the region of a clip.

(40) FIG. 18a shows an exploded view of a further carriage arrangement according to FIGS. 17a-b, wherein rivets are provided to fasten the driving bar arrangement to the carriage.

(41) FIG. 18b shows a view of a cross-section of the carriage arrangement from FIG. 18a in the region of a rivet.

(42) FIG. 19a shows an exploded view of a further carriage arrangement according to FIGS. 18a-b, wherein screws are provided to fasten the driving bar arrangement to the carriage.

(43) FIG. 19b shows a view of a longitudinal section of the carriage arrangement from FIG. 19a.

(44) FIG. 20a shows an exploded view of a further carriage arrangement according to FIGS. 19a-b, wherein a screw and a bolt are provided in order to fasten the driving bar arrangement to the carriage.

(45) FIG. 20b shows a view of a longitudinal section of the carriage arrangement from FIG. 20a.

(46) FIG. 21a shows an exploded view of a further carriage arrangement according to FIGS. 20a-b, wherein two metal plates provided with hooks are provided in order to fasten the driving bar arrangement to the carriage.

(47) FIG. 21b shows a view of a longitudinal section of the carriage arrangement from FIG. 21a.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(48) FIG. 1a shows a door 10 with a schematically partially indicated fixed frame 12 and at least one sash 14. The sash 14 is indicated in FIG. 1a by fittings. The sash 14 can be moved in a transverse direction 16 from the main plane 18 of the fixed frame 12 and parallel to the main plane 18 in the displacement direction 20.

(49) The movement of the sash 14 in the displacement direction 20 is not positively controlled, but a user can move the sash 14 in the parked state by directly displacing the sash 14. In contrast, sash movement in the transverse direction 16 is positively controlled. For this purpose, the user can operate a handle 22 whose pivoting is translated by a mechanism 24 into a linear movement of a driving bar arrangement 26. The driving bar arrangement operates a plurality of carriages 28, 30, which are arranged at the bottom of the sash 14, in order to transfer the weight of the sash 14 onto a running rail 32. The running rail 32 is part of the fixed frame 12. The carriages 28, 30 are preferably of identical design.

(50) FIG. 1b shows an exemplary embodiment of a carriage arrangement 34. The carriage arrangement 34 comprises the driving bar arrangement 26 and the carriage 28. The driving bar arrangement 26 has a lipped rail 36 that is fixedly mountable on the sash 14 (see FIG. 1a) and a driving bar 38 movable relative to the lipped rail. The carriage 28 has a sash part 40 that is fixedly mountable on the sash 14 (see FIG. 1a) and a roller part 42 with multiple rollers 44a, 44b. The roller part 42 is movable relative to the sash part 40 in the transverse direction 16 (see FIG. 1a). This movement is mediated by the driving bar 38 via a control projection 46. The control projection 46 can here project through a slot 47 in the lipped rail 36. The control projection 46 engages in a control slot 48. The control slot 48 is at least sectionally oblique to the longitudinal axis 49 of the roller part 42 or oblique to the main plane 18 (see FIG. 1a).

(51) For guiding the roller part 42 in the transverse direction 16 (see FIG. 1a), i.e., transversely, in particular perpendicularly, to the longitudinal axis 49, the sash part 40 is supported on the roller part 42 by a first roller bearing guide 50a and a second roller bearing guide 50b. The roller bearing guides each comprise a bearing part 52a, 52b, in each of which a support rail 54a, 54b is guided.

(52) When generating the force for the transverse displacement of the roller part, the control projection 46 is preferably supported in a straight guide slot 55 in the sash part 40. The guide slot 55 extends in the direction of the main plane 18 (see FIG. 1a) or, depending on the parked position of the sash 14 (see FIG. 1a) from the fixed frame 12 (see FIG. 1a), parallel to the main plane 18 (see FIG. 1a).

(53) FIG. 1c shows the carriage arrangement 34 in the mounted state.

(54) FIG. 1d shows a longitudinal section through the carriage arrangement 34. It can be seen from FIG. 1d that the support rails 54a, b each have a convexly curved surface 56a, 56b with which they abut the arcuate concave support surfaces 58a, 58b of the bearing parts 52a, b. The roller bearing guides 50a, b are thereby able in a roller-bearing-guided manner to offload onto the roller part 42 forces on the sash part 40 that occur in the displacement direction 20, or vice versa.

(55) An actuation of the handle 22 (see FIG. 1a) and thus a displacement of the control projection 46 (see FIG. 1b) in the control slot 48 (see FIG. 1b) also causes a force on the roller part 42 in the longitudinal direction in addition to the movement of the roller part 42 in the transverse direction 16 (see FIG. 1a). This force in the longitudinal direction can be offloaded with low friction by the roller bearing guide(s) 50a, b.

(56) FIG. 1e shows the carriage arrangement 34 in cross-section. It can be seen from FIG. 1e that the support rail 54a is designed longer in its longitudinal extension than the bearing part 52a, so that the bearing part 52a moves along the support rail 54a for the movement of the carriage arrangement 34 in the transverse direction 16 (see FIG. 1a).

(57) FIGS. 1f, 1g, 1h and 1i show the bearing part 52a. It can be seen from the figures that the bearing part 52a comprises at least one, preferably a plurality of, ball raceways 60a, 60b in a bearing part body 61. The ball raceways 60a, b each comprise at least one groove 62a, 62b in which multiple balls 64a, 64b are guided. The grooves 62a, 62b are designed such that the balls 64a, 64b protrude from the support surface 58a and are guided back inside the bearing part 52a.

(58) The bearing part body 61 of the bearing parts 52a, b (see FIG. 1b), in particular the covers of the bearing part bodies 61 (see FIG. 1h), and the support rails 54a, b (see FIG. 1b) represent roller bearing beds. The rolling bodies in the form of the balls 64a, b are supported transversely to the extension of the bearing parts 52a, b (see FIG. 1b) or the support rails 54a, b (see FIG. 1b) on the roller bearing beds in order to transmit forces in the direction of the longitudinal extension of the carriage arrangement 34 (see FIG. 1b).

(59) FIG. 2a shows a carriage arrangement 34 in which support rails 54a, b are formed shorter in their longitudinal extension than bearing parts 52a, b. The bearing parts 52a, b are therefore designed so as to be so short that in side view they are covered by side walls 66a, 66b of the carriage 28, in particular of the roller part 42. As a result, the penetration of dirt into the bearing parts 52a, b can be better prevented.

(60) FIG. 3a shows a carriage arrangement 34 corresponding to the carriage arrangement in FIG. 1b. However, roller bearing guides 50a, 50b are mounted such that the concave support surfaces 58a, b of the bearing parts 52a, b are open downwards. The bearing parts 52a, 52b are mounted so as to be non-pivotable about their longitudinal axis in at least one direction of rotation on the carriage 28, here on the sash part 40. For rotationally fixed mounting, cut-outs 68a, 68b that form-fit the bearing parts 52a, b, are provided on the component (sash part 40 or roller part 42) of the carriage 28, on which the bearing part 52a, b is mounted.

(61) The carriage 28 further comprises in each case a recess 70a, 70b in which the support rails 54a, b are inserted in order to prevent a displacement of the support rails 54a, b in the direction of the longitudinal axis 49. The support rails 54a, b can be loosely inserted into the recesses 70a, b.

(62) FIG. 4a shows a carriage arrangement 34 in which support rails 54a, b are fixed centrally on the carriage 28, here on the sash part 40. The fixing can, for example, be effected by screws 72a, b.

(63) FIG. 5a shows a carriage arrangement 34 in which roller bearing guides 50a, b with ball bearings 74a, 74b are provided. The ball bearings 74a, b have balls 76a, 76b which are guided in ball bearing beds 78a, 78b, 78c, 78d. The ball bearing beds 78a-d have grooves 80a, 80b, 80c, 80d for guiding the balls 76a, b. The balls 76a, b thus represent rolling bodies which are guided in roller bearing beds in the form of the ball bearing beds 78a-d. The roller bearing guides 50a, b further preferably each have a frame 82a, 82b to prevent dirt from penetrating.

(64) FIG. 5b shows the carriage 28 according to FIG. 5a in a partially sectioned side view. It can be seen from FIG. 5b that the ball bearings 74a, 74b enable a very low-friction guidance of the sash part 40 on the roller part 42.

(65) FIG. 6a shows a carriage 28 in which roller bearing guides 50a, b each have at least one needle bearing 84a, 84b, 84c, 84d. The needle bearings 84a-d have needles, of which for reasons of clarity only one needle 85 is provided with a reference sign in FIG. 6a. The needles 85 represent rolling bodies. The needles 85 are arranged between needle bearing beds, of which for reasons of clarity only two needle bearing beds 86a, 86b are provided with a reference sign in FIG. 6a. The needle bearing beds 86a, b represent roller bearing beds. At least one needle bearing 84a-d, in particular a plurality of needle bearings 84a-d, is/are at an angle w of more than 0? and less than 180?, preferably of more than 10? and less than 170?, in relation to the longitudinal axis 49 of the roller part 42. Particularly preferably, at least one roller bearing guide 50a, b, in particular two roller bearing guides 50a, b have needle bearings 84a-d arranged in a V configuration (as shown in FIG. 6a).

(66) FIG. 7a shows a carriage 28 with non-alike roller bearing guides 50a, b. A ball bearing 74a is here provided for the first roller bearing guide 50a and a needle bearing 84a for the second roller bearing guide.

(67) FIG. 8a shows a carriage 28 with a plurality of needle bearings 84a-d. The needle bearings 84a, b form the first roller bearing guide 50a and the needle bearings 84c, d form the second roller bearing guide 50b. Here, the needle bearings 84b, 84c are provided for the offloading of the vertical forces and the needle bearings 84a, 84d for the transmission of the horizontal forces in the displacement direction 20 (see FIG. 1a).

(68) FIG. 9a shows a carriage 28 with a first roller bearing guide 50a, which has needle bearings 84a, b and a second roller bearing guide 50b, which likewise has a needle bearing 84c, but which is only designed for transmitting vertical forces.

(69) FIG. 10a shows a carriage 28, wherein the carriage 28 has a first roller bearing guide 50a with a combination of a horizontally aligned needle bearing 84a and a ball bearing 74a. The first roller bearing guide 50a is thereby capable of offloading not only vertical forces but also horizontal forces from the sash part 40 onto the roller part 42. A second roller bearing guide 50b has a needle bearing 84b for transmitting vertical forces.

(70) It is common to all exemplary embodiments of the carriages 28, 30 that at least one first roller bearing guide 50a provides a roller-bearing-guided support of the sash part 40 on the roller part 42 during the movement of the roller part 42 in the transverse direction 16 (see FIG. 1a), that is to say transversely, preferably perpendicularly, to the longitudinal axis 49 of the roller part 42. In this case, the roller-bearing-guided support absorbs not only weight forces but also forces in the longitudinal direction of the roller part 42.

(71) FIGS. 11a-16c show different embodiments of the control projection 46:

(72) FIGS. 11a, 11b and 11c show a control projection 46, which has two roller-bearing-guided rollers 87a, 87b. The roller 87a is here provided for guiding in the at least sectionally oblique control slot 48 (see FIG. 1b), and the roller 87b is provided for guiding in the straight guide slot 55 (see FIG. 1b).

(73) FIGS. 12a, 12b and 12c show a control projection 46 which has an immovable roller 87a for guiding in the at least sectionally oblique control slot 48 (see FIG. 1b) and a roller-bearing-guided roller 87b for guiding in the straight control slot 55 (see FIG. 1b).

(74) FIGS. 13a, 13b and 13c show a control projection 46 which has an immovable roller 87a for guiding in the at least sectionally oblique control slot 48 (see FIG. 1b) and a plain-bearing-guided roller 87b for guiding in the straight control slot 55 (see FIG. 1b).

(75) FIGS. 14a, 14b and 14c show a control projection 46, which has a sleeve 88. The sleeve 88 is plain-bearing-guided. It has a roll-shaped section 90a for guiding the sleeve 88 in the at least sectionally oblique control slot 48 (see FIG. 1b). The sleeve 88 further comprises a roller-shaped section 90b which prevents contact of the control projection 46 with the straight control slot 55 (see FIG. 1b). The roller-shaped section 90b has a smaller diameter than the roller-shaped section 90a.

(76) FIGS. 15a, 15b and 15c show a control projection 46 which has an immovable roller 87a for guiding in the at least sectionally oblique control slot 48 (see FIG. 1b) and a plain-bearing-guided roller 87b for guiding in the straight control slot 55 (see FIG. 1b). Here the roller 87b is mounted on a sleeve 90 which is widened in sections in order to space the roller 87b vertically apart from the roller 87a.

(77) FIGS. 16a, 16b and 16c show a control projection 46 which has a roller-bearing-guided roller 87a for guiding the control projection 46 in the at least sectionally oblique control guide 48 (see FIG. 1b). Furthermore, the control projection 46 has a sleeve 92 in order to keep the roller-bearing-guided roller 87a at a distance.

(78) FIGS. 17a-21b show different variants of a carriage arrangement 34 with a connection of a carriage 28 to a driving bar arrangement 26 by at least one holding means in order to facilitate the installation of the carriage arrangement 34 and to prevent the entry of dirt during installation on the sash 14 (see FIG. 1a). This further ensures that the carriage 28 is exactly in alignment with the driving bar arrangement 26 and the movement of the control projection 46 (see FIG. 1b) in the straight guide slot 55 (see FIG. 1b) is ensured with little wear.

(79) FIGS. 17a, 17b show a carriage arrangement 34 in which the driving bar arrangement 26 is held on the carriage 28 by means of at least one clip 94a, 94b. In particular, the lipped rail 36 of the driving bar arrangement 26 is fixed to the carriage 28 via the at least one clip 94a, b. For aligning the driving bar arrangement 26 on the carriage 28, a contact projection (not shown) can be provided, in particular on the driving bar arrangement 26.

(80) FIGS. 18a, 18b show a carriage arrangement 34 in which the driving bar arrangement 26 is held on the carriage 28 by means of at least one rivet 98a, 98b.

(81) FIGS. 19a, 19b show a carriage arrangement 34 in which the driving bar arrangement 26 is held on the carriage 28 by means of at least one screw 100a, 100b.

(82) FIGS. 20a, 20b show a carriage arrangement 34 in which the driving bar arrangement 26 is held on the carriage 28 by a screw 100a. Furthermore, a bolt 102 is provided in order to align the driving bar arrangement 26 on the carriage 28.

(83) FIGS. 21a, 21b show a carriage arrangement 34 in which the driving bar arrangement 26 is held on the carriage 28 by metal plates 104a, 104b.

(84) The metal plates 104a, b can each be provided with a hook 106a, 106b for fastening to the driving bar arrangement 26 or to the carriage 28. The metal plates 104a, b can alternatively or additionally be fastened by screws 100a, b to the driving bar arrangement 26 or to the carriage 28.

(85) Taking an overview of all figures of the drawings, the invention relates in summary to a carriage arrangement 34 with a driving bar arrangement 26 and a carriage 28, 30. The carriage 28, 30 has a roller part 42 with a plurality of rollers 44a, b. The roller part 42 is displaceable transversely, in particular perpendicularly, to the longitudinal extension of the carriage 28, 30 towards a sash part 40 which can be mounted immovably on a sash 14. A driving bar 38 of the driving bar arrangement 26 has a control projection 46 which engages in a control slot 48 formed at least sectionally obliquely to the longitudinal extension of the carriage 28, 30. For guiding the roller part 42 on the sash part 40, a first roller bearing guide 50a is provided, which extends transversely, in particular perpendicularly, to the longitudinal extension of the carriage 28, 30. The first roller bearing guide 50a has rolling bodies, in particular balls 64a, b, 76a, b or needles 85, which in the direction of the longitudinal extension of the carriage 28, 30 are supported preferably not only on the sash part 40 but also on the roller part 42, in order to offload forces acting in the direction of the longitudinal extension of the carriage 28, 30 from the sash part 40 onto the roller part 42 with low friction.

LIST OF REFERENCE SIGNS

(86) 10 Door 12 Fixed frame 14 Sash 16 Transverse direction 18 Main plane 20 Displacement direction 22 Handle 24 Mechanism 26 Driving bar arrangement 28 Carriage 30 Carriage 32 Running rail 34 Carriage arrangement 36 Lipped rail 38 Driving bar 40 Sash part 42 Roller part 44a, b Rollers 46 Control projection 47 Slot 48 Control slot 49 Longitudinal axis of the roller part 42 50a First roller bearing guide 50b Second roller bearing guide 52a, b Bearing part 54a, b Support rail 55 Straight guide slot 56a, b Curved surface of the support rail 54a, b 58a, b Support surface of the bearing parts 52a, b 60a, b Ball raceway 61 Bearing part body 62a, b Groove in the ball raceway 60a, b 64a, b Ball of the ball raceway 60a, b 66a, b Side wall 68a, b Cut-out 70a, b Recess 72a, b Screw 74a, b Ball bearing 76a, b Ball 78a-d Ball bearing bed 80a-d Groove 82a, b Frame 84a-d Needle bearing 85 Needle 86a, b Needle bearing bed 87a, b Roller 88 Sleeve 90 Sectionally expanded sleeve 92 Sleeve 94a, b Clip 98a, b Rivet 100a, b Screw 102 Bolt 104a, b Metal plate 106a, b Hook w Angle of the needle bearing 84a to the longitudinal axis 49