Retracting and extending device comprising bidirectional retracting devices

Abstract

The invention relates to a retracting and extending device for sliding doors or drawers, comprising a housing in which at least one retracting device is arranged which has a combination acceleration and deceleration device and in which at least one extending device is arranged, wherein the retracting device and the extending device can be coupled together by means of at least one switchable axial coupling on the basis of the stroke range, a carriage comprising such a retracting and extending device, and a door guide rail comprising carriages inserted therein. The retracting and extending device has a second retracting device which is arranged in the aforementioned housing. The combination acceleration and deceleration device is both a part of the first retracting device as well as a part of the second retracting device. By virtue of the invention, a compact retracting and extending device is developed with an expanded range of possible applications.

Description

[0001] The invention relates to a retraction and extension device for sliding doors or drawers with a housing in which at least one retraction device having a combined acceleration and deceleration device is arranged and in which at least one extension device is arranged, wherein the retraction device and the extension device can be coupled to each other depending on the stroke range by means of at least one switchable axial coupling, a carriage with such a retraction and extension device and a door guide rail with a carriage inserted therein.

[0002] Such a insertion and extraction device is known from DE 10 2017 004 611 A1. This device is suitable for objects of large mass and for high inertial forces.

[0003] The present invention is based on the problem of developing a compact insertion and extraction device with extended application possibilities.

[0004] This problem is solved by the features of the main claim. For this purpose, the retraction and extension device comprises a second retraction device arranged in the aforementioned housing. The combined acceleration and deceleration device is part of both the first retraction device and the second retraction device.

[0005] The housing of the retraction and extension device contains two retraction devices and at least one extension device. A first retraction device is coupled to the extension device by means of an axial coupling in an operating end position, when the extension device is released from a locking position, and when the extension device is moved out of the locking position. When moving to the operating end position, the coupling partners of the axial coupling are separated from each other.

[0006] The two retraction mechanisms each have a drive element that can be moved relative to the housing between a park position and an end position. The two drive elements are oriented in opposite directions. They share a combined acceleration and deceleration mechanism. This allows a sliding door or drawer to be moved with a delay into both a closed and an open operating end position. From the closed operating end position, for example, reopening can be triggered by applying external pressure to the sliding door or drawer in the closing direction. However, the sliding door or drawer can also be pulled directly from this operating end position in the open direction – without triggering the extension mechanism.

[0007] Further details of the invention will become apparent from the dependent claims and the following description of schematically illustrated embodiments. Figure 1: Combined infeed and outfeed device; Figure 2: Figure 1 with the housing shell removed; Figure 3: Front view of the Figure 1 Figure 4: Housing shell; Figure 5: Detail of the Figure 4Figure 6: Drive element; Figure 7: Slide; Figure 8: Detent lever carrier part with detent lever; Figure 9: Cylinder-piston unit; Figure 10: Retraction and extension device in a starting position; Figure 11: Retraction and extension device after the retraction movement has begun; Figure 12: Retraction and extension device with the extension device tensioned; Figure 13: Retraction and extension device after the retraction device has been released; Figure 14: Retraction and extension device in an operating end position; Figure 15: Detail of the release clutch in the operating end position; Figure 16: Retraction and extension device when opening from the operating end position; Figure 17: Retraction and extension device with the sliding door partially open; Figure 18: Detail of the loading clutch; Figure 19: Retractable and extendable mechanism with pivoted locking lever; Figure 20: Retractable and extendable mechanism with the sliding door fully open; Figure 21: Bidirectional retractable and extendable mechanism;Figure 22: Front view of a system with support rail and sliding door; Figure 23: System with sliding door, open; Figure 24: System with sliding door, closed.

[0008] The Figures 1 - 9 Figure 10 shows a combined insertion and extraction device and some of its individual parts. In the Figures 10 - 20 Individual operating states of the insertion and extension device (10) are shown. Such insertion and extension devices (10) are used, among other things, in sliding door systems (2) or in drawer systems.

[0009] The insertion and extension device (10) is used in a sliding door system (2), see the Figures 22 - 24, for example, part of a carriage (6) that is attached to the top of a sliding door leaf (8). At least one roller (7) of the carriage (6) is arranged at each of the longitudinally oriented ends (15) of the insertion and extension device (10). All rollers (7) run in a door guide rail (3) that is fixed in a building or cabinet. At least one fixed follower (5) is arranged in the door guide rail (3) and contacts the insertion and extension device (10).

[0010] It is also conceivable to arrange the insertion and extension mechanism (10) on the frame side. The follower (5) is then attached to the sliding door leaf (8). When used in a drawer system, the insertion and extension mechanism (10) can also be arranged either on the drawer or on the furniture carcass.

[0011] In a sliding door system (2) consisting of a door guide rail (3) and a carriage (6), the entire carriage (6) moves invisibly within the door guide rail (3). The door guide rail (3) can have a square or rectangular cross-section. In the case of a rectangular cross-section, one edge length is a maximum of 5% larger than the other edge length.

[0012] The insertion and extraction device (10) has a housing (11) in which, in the illustrated embodiment, an extraction device (141), a first insertion device (81), and a second insertion device (281) are arranged. The insertion devices (81; 281) and the extraction device (141) shown in the figures are arranged one behind the other in the housing (11). The longitudinal length (15) of the housing (11) is 420 millimeters in the embodiment. The individual insertion devices (81; 281) have the function, for example, of conveying the sliding door leaf (8) into a closed operating end position (301) or into an open operating end position (303). When the sliding door leaf (8) is closed, the housing (11) is moved in the closing direction (305) relative to the stationary follower (5) in the embodiment. In the illustrations of the Figure 1 , 2 and 10 - 20The closing direction (305) is oriented to the left with respect to the housing (11). The opening direction (306) is oriented to the right. Both the opening direction (306) and the closing direction (305) are oriented in the longitudinal direction (15).

[0013] The first feed device (81) conveys the housing (11) in the closing direction (305). The feed direction (16) of this feed device (81) relative to the housing (11) is oriented to the right in the illustrations. The feed direction (282) of the second feed device (281) relative to the housing (11) is oriented in the opposite direction.

[0014] The housing (11) is conveyed in the opening direction (306) by means of the extraction device (141). The extraction direction (17) relative to the housing (11) is oriented to the left in the illustrations. Both the insertion directions (16; 282) and the extraction direction (17) are oriented in the longitudinal direction (15).

[0015] Each feed device (81; 281) has a drive element (111; 283) that interacts with a combined acceleration and deceleration device (82). A combined acceleration and deceleration device (82) has an acceleration device (83) and a deceleration device (91) connected in parallel to it. The resultant of the acceleration and deceleration acts on the drive element (111; 283). The combined acceleration and deceleration device (82) forms the drive for the feed device (81; 281). In the exemplary embodiment, both feed devices (81; 281) have the same acceleration device (83) and the same deceleration device (91). The acceleration device (83) is formed by a first spring energy storage device (83) in the form of a tension spring.This first spring energy storage device (83) is held by a first spring end (84) in the first drive element (111) and by a second spring end (85) in the second drive element (283).

[0016] The delay device (91) comprises a cylinder-piston unit (92). The cylinder-piston unit (92) has a cylinder (93) and a piston (95) adjustable therein by means of a piston rod (94), cf. Figure 9 The cylinder (93) is mounted in the housing (11) so as to be displaceable in the longitudinal direction (15). In the illustrations of the Figure 1 and 2 The first drive element (111) is pivotally mounted on the piston rod (94). The second drive element (283) is pivotally mounted on the cylinder base (96).

[0017] The extension device (141) has a locking lever carrier part (151) that is movable within the housing (11). A locking lever (171) is pivotably mounted in the locking lever carrier part (151). The locking lever carrier part (151) is biased in the extension direction (17) by means of a second spring energy storage device (142). The second spring energy storage device (142) is the drive for the extension device (141). In the exemplary embodiment, the second spring end (143) of the second spring energy storage device (142) is held in a spring retainer (66) on the housing side. The second spring energy storage device (142) is designed as a tension spring (142). In the illustration of the Figure 2The tension spring (142) has two sections (144, 145) of different diameters. In a first section (144), adjacent to the detent lever carrier part (151), the tension spring (142) has a cross-sectional area that corresponds, for example, to 0.8% of the length of the housing (11). This section (144) is guided around a deflecting disc (221). The wrap angle in this illustration is 180 degrees. The deflection radius is, for example, three times the diameter of the tension spring (142) in this first section (144). The diameter of the second section (145) of the tension spring (142) is, in the illustrated embodiment, for example, more than twice that of the first section (144). Due to its geometric design, the second spring energy storage device (142) has a first section (144) of high spring stiffness and a second section (145) of low spring stiffness.

[0018] The housing (11) has a first housing shell (31) and a second housing shell (71). The two housing shells are mirror images of each other with respect to a vertical central longitudinal plane of the housing (11). The first housing shell (31) and the second housing shell (71) are connected to each other, for example, by force-fit, form-fit, or material-fit connection. In the exemplary embodiment, they are screwed together by means of several screws. The housing (11) is cuboid in shape, cf. Figure 3 The height oriented perpendicular to the longitudinal direction (15) is, for example, 4.5% of the length, and the depth oriented perpendicular to both of the aforementioned directions is also, for example, 4.5% of the length. In the representations of the Figure 2 as well as the Figures 10 - 21 The insertion and extraction device (10) is shown without the second housing shell (71).

[0019] On the upper side (12), the housing (11) has two longitudinal slots (13, 14) spaced apart from each other by a transverse rib (22). A first slot, located in the Figure 1 and 2 In the longitudinal slot (13) shown on the left, the locking lever (171) and the first drive element (111) protrude from the housing (11). In these illustrations, the locking lever (171) is in a stop position (176). Here, a stop surface (174) of the locking lever (171) is at least approximately perpendicular to the top of the housing (12). The extension device (141) is in the Figure 1 and 2 The first drive element (111) is shown in a position between a locking position (147) and a ready position (146). The first drive element (111) is shown in a position between a first drive element parking position (112) and a first end position (113).

[0020] From the aforementioned Figure 1 and 2The second drive element (283) protrudes from the second longitudinal slot (14) shown on the right. In the figures mentioned, the second drive element (283) is shown in a second drive element parking position (284). In this drive element parking position (284), the second drive element (283) is secured in the housing (11) by force-fit and / or form-fit.

[0021] The Figure 4 shows the inside (32) of the first case shell (31). Figure 5 Figure 1 shows some details in an enlarged view. Together with the inner surface of the second housing shell (71), four guide rail systems (33, 41, 51, 61) are formed in the housing (11). Each of the guide rail systems (33, 41, 51, 61) has two opposing guide rails (34, 41, 52, 53, 54).

[0022] A first guide rail system (33) is formed below the first longitudinal slot (13). This guide rail system (33) is hereinafter referred to as the extension guide rail system (33). The individual first guide rail (34) has a straight section (35) and an adjacent curved section (36), as well as a locking section (37) adjacent to the curved section (36). The length of the first guide rail (34) in the longitudinal direction (15) is e.g. 22% of the length of the housing (11). The first guide track (34) has a constant height, which in the exemplary embodiment is 3 millimeters.

[0023] The curved section (36) is arranged on the straight section (35) in the direction of a vertical central transverse plane of the housing (11). The bend is oriented in the direction away from the longitudinal slot (13). The mean radius of the curved section (36) is, for example, 28% larger than the height of the first guide track (34). The sector angle (38) of the curved section (36) is 160 degrees in the exemplary embodiment. This sector angle (38) is at least 120 degrees. The straight locking section (37) adjoins the area of ​​the sector angle (38). The length of this locking section (37) corresponds, for example, to half the height of the first guide track (34).

[0024] In the exemplary embodiment, the second guide rail system (41) is arranged at least approximately centrally in the longitudinal direction (15) of the housing (11). This second guide rail system (41) is hereinafter also referred to as the first feed guide rail system (41). Its length is, for example, 22% of the length of the housing (11). The second guide rail system (41) has a second guide rail (42) per housing shell (31, 71) with a horizontal section (43), an inclined section (44), and a locking section (45). These sections (43, 44, 45) merge seamlessly into one another. Their height is one-third greater than the height of the first guide rail system (33). The second guide rail system (41) is offset relative to the first guide rail system (33) by 80% of its height in the direction of the first longitudinal slot (13). The distance between the first guide track system (33) and the second guide track system (41) is, for example, 2.5% of the length of the housing (11) in the longitudinal direction (15).The shortest distance is formed by the distance between the curved section (36) and the securing section (45).

[0025] The horizontal section (43) is oriented parallel to the longitudinal direction (15). Its length is, for example, 87% of the length of the second guide track system (41). The inclined section (44) forms an angle of, for example, 10 degrees with the longitudinal direction (15). Its length is, for example, 7.5% of the length of the second guide track system (41). The locking section (45) forms an angle of, for example, 80 degrees with the longitudinal direction (15). Its length is, for example, 20% greater than the aforementioned height of the second guide track (42). It points in the direction away from the first longitudinal slot (13).

[0026] The third guideway system (51) is shown in the illustrations of the Figures 4 and 5The third guide system (51) is arranged on the side facing away from the extension guide system (33), next to the second guide system (41). The third guide system (51) is also referred to as the cylinder guide system (51) in the following. It is designed as a straight guide. The length of the third guide system (51) is, for example, 12.5% ​​of the length of the housing (11). This third guide system (51) has three guide shells (52, 53, 54) on each side of the housing. These guide shells (52-54) are congruent to each other in their transverse plane oriented perpendicular to the longitudinal direction (15). The nominal diameter of the guide shells (52-54) corresponds to the nominal diameter of the cylinder (93), with the housing (11) forming a clearance fit with the cylinder (93).

[0027] The fourth guide rail system (61) is a second infeed guide rail system (61). It is arranged and configured as a mirror image of the first infeed guide rail system (41). The mirror plane is the vertical central transverse plane of the cylinder guide system (51). The fourth guide rail system (61) can also e.g. have a different length, a differently arranged safety section, etc. than the second guideway system (41).

[0028] The spring holder (66) is formed below the safety section (65) of the second feed guide system (61). The deflecting disc (221) for the second spring energy storage device (142) sits on a connecting pin (23) of the housing (11) in the area of ​​the carriage-side end of the extension guide track system (33).

[0029] In the Figure 6A drive element (111; 283) is shown. Both drive elements (111; 283) are, for example, identical in design. Each drive element (111; 283) has a guide pin (114) on both sides and two drive hooks (116, 117) that define a drive recess (115). The two drive hooks (116, 117) are a draw-in hook (116) located at the rear in the direction of insertion (16) and a push-out hook (117) located at the front in the direction of insertion (16). Optionally, the drive element (111; 283) can be designed to be elastically deformable in the area of ​​the drive hooks (116, 117). The drive element (111; 283) has a spring receptacle (118) on its underside. In the exemplary embodiment, the first spring energy storage element (83) is held in the spring receptacles (118) of both drive elements (111; 283). On the side facing away from the guide pins (114), the drive element (111; 283) has a guide block receptacle (119).The cross-sectional area of ​​the guide block receptacle (119) is, for example, limited by a circular segment with an angle of, for example, 245 degrees.

[0030] In the presentation of the Figure 2 The guide pins (114) of the first drive element (111) are located in the horizontal section (34) of the first feed guide track system (41). The guide pins (114) of the second drive element (283) are located in the locking section (65) of the second feed guide track system (61). A second guide for the drive element (111; 283) is provided by a guide block (97; 98). This guide block (97; 98) is located in the guide block receptacle (119) of the drive element (111; 283). It has two guide bolts (99) with, for example, an oval cross-section.

[0031] The guide blocks (97; 98) are parts of the delay device (91). In the exemplary embodiment, a first guide block (97) is attached to the piston rod head (101) of the piston rod (94). In the illustration of the Figure 2 This guide block (97) with a cylindrical center piece (102) sits in the guide block receptacle (121) of the first drive element (111), cf. Figure 9 A second guide block (98) is attached to the cylinder base (96) of the cylinder (93). This guide block (98) is pivotally connected to the second drive element (283).

[0032] In the Figure 7 The slide (121) of the first feed device (81) is shown. The slide (121) has the shape of a U-shaped channel profile. At each of its two ends, it has a guide pin (122, 123) on both sides. These guide pins (122, 123) have, for example, an oval cross-section. The length of the slide (121) is, for example, 28% of the length of the housing (11).

[0033] The slide (121) has a coupling side (124) at the end shown on the left and a drive side (125) at the other end. The guide pins (123) on the coupling side (124) are, for example, positioned lower than the guide pins (122) on the drive side (125). The height difference corresponds to the height difference between the extension guide system (33) and the first insertion guide system (41). The slide (121), which is installed in the housing (11), sits with the drive-side guide pins (122) in the insertion guide system (41) and with the coupling-side guide pins (123) in the extension guide system (33).

[0034] On its upper side, the slide (121) has a reinforcing rib (126) on each side. This connects the drive side (125) and the coupling side (124). When the insertion and removal device (10) is assembled, the reinforcing ribs (126) are, for example, flush with the top surface (12) of the housing (11).

[0035] The two flanks (127) of the slide (121) are congruent with each other. They have a relief opening (128) and a guide opening (129). For example, two housing screws (21) penetrate the slide (121) in the area of ​​the relief opening (128). On the coupling side (124), the relief opening (127) is bounded by a coupling wall (131). The coupling wall (131) connects both flanks (127).

[0036] In the exemplary embodiment, the coupling wall (131) has two coupling surfaces (132, 133). These are arranged one above the other. The lower coupling surface (132) is referred to below as the release coupling surface (132). In the exemplary embodiment, the release coupling surface (132) is a uniaxially curved surface that covers an angle of 50 degrees. The radius of the release coupling surface (132) is, for example, 1.6% of the length of the housing (11).

[0037] The release coupling surface (132) transitions smoothly into the further coupling surface (133), a loading coupling surface (133), along with the coupling wall (131). In the exemplary embodiment, the loading coupling surface (133) is inclined by 16 degrees with respect to a normal plane to the longitudinal direction (15). Here, the end of the loading coupling surface (133) adjacent to the reinforcing ribs (126) is closer to the guide opening (129) than its end oriented towards the release coupling surface (132).

[0038] The guide openings (129) are arranged on the drive side (125) of the carriage (121). They have a cross-sectional area that is at least approximately in the shape of an isosceles triangle. The angle enclosed by the two equal legs (134) is, for example, 10 degrees. The imaginary apex of the angle lies above the housing (11). With the carriage (121) installed, the lower leg of the guide opening (129) lies below the locking section (45) of the feed guide system (41) in the vertical direction (18). In the illustration of the Figure 2 The guide pins (114) of the first drive element (111) penetrate the guide openings (129) of the slide (121).

[0039] The base (135) of the slide (121) is plate-shaped. On the drive side (125), the slide (121) has a drive element recess (136).

[0040] The Figure 8Figure 1 shows a locking lever carrier part (151) with an inserted locking lever (171). The locking lever carrier part (151) has two guide pins (152, 153) on each side. When the locking lever carrier part (151) is mounted, the guide pins (152, 153) are slidably mounted in the extension guide system (33).

[0041] The locking lever (171) is pivotally mounted in the locking lever carrier part (151). It is, for example, wedge-shaped. Its surface facing in the retraction direction (16) is a contact surface (172). The stop surface (174) faces in the extension direction (17). In the illustrations of the Figures 2 and 8The locking lever (171) is positioned at least approximately perpendicular to a connecting plane of the guide pins (152, 153). In this position, the locking lever (171) is biased in this embodiment by a spring (161), e.g., a helical torsion spring (161) in the form of a leg spring (161), for example, against a pivot stop. From the upright position, the locking lever (171) can be pivoted into an at least approximately horizontal position under load of the spring (161), cf. Figure 19 . The pivot axis (173) of the locking lever (171) lies parallel to the guide pins (152, 153) on both sides.

[0042] At the end pointing in the extension direction (17), the locking lever carrier part (151) has a spring receptacle (154). In this spring receptacle (154) the illustration shows the Figure 2 the second energy storage device (142) is held. Below the spring receptacle (154), the locking lever carrier part (151) has a stop wall (155).

[0043] The stop wall (155) has at least two stop areas (156, 157). These are arranged offset from each other in the vertical direction (18). In the exemplary embodiment, the stop wall (155) has a lower release area (156), a transition area (158) and an upper loading area (157).

[0044] In the exemplary embodiment, the release area (156) is formed by the lower edge of the stop wall (155), which is, for example, rounded. The release area (156) is linear in this embodiment. This line is oriented parallel to the center line of the guide pins (152, 153). A convex shape for the section of the stop wall surrounding the release area (156) is also conceivable. In this case, the release area is reduced to a single point. The transition area (158) is, for example, flat. It is perpendicular to a plane in which all the guide pins (152, 153) of the locking lever carrier part (151) lie. The loading area (157) adjoins the upper end of the transition area (158). It is inclined from bottom to top in the retraction direction (16) by, for example, 10 degrees relative to the transition area (158). The transitions between the individual areas can be curved.

[0045] Together with the slide (121), the locking lever carrier part (151) forms two switchable axial couplings (211, 212). These are a release coupling (211) and a loading coupling (212). The release coupling (211) is formed when the release coupling surface (132) of the slide (121) contacts the release area (156) of the locking lever carrier part (151). The loading coupling (212) is closed when the loading area (157) of the locking lever carrier part (151) rests against the loading coupling surface (133) of the slide (121). The two axial couplings (211, 212) can be designed to be force-fit or positive-fit.

[0046] The Figure 9Figure 92 shows the cylinder-piston unit (92) of the delay device (91). The cylinder-piston unit (92) shown is a hydraulic cylinder-piston unit (92). It is also conceivable to use a pneumatic cylinder-piston unit (92). The length of the cylinder (93) corresponds, for example, to the length of the slide (121). The stroke of the piston (95) and the piston rod (94) is, for example, 16% of the length of the housing (11). The inner diameter of the cylinder (93) is, for example, 1.5% of the length of the housing (11).

[0047] In the cylinder (93), the piston (95) separates a displacement chamber (103) from a compensation chamber (104). The compensation chamber (104) is located on the piston rod side. A compensating spring (106) is arranged between the cylinder head (105) and the compensation chamber (104). This spring is designed as a compression spring and compresses a cylinder disk (107) against which a piston rod seal (108) rests.

[0048] The displacement chamber (103) is located between the piston (95) and the cylinder base (96). The piston (95) has, for example, three throttle channels (109) that penetrate the piston (95) longitudinally (15). A throttle disc (100), for example, a flexible one, covers the throttle channels (109) on the side of the displacement chamber (103). When the piston (95) and the cylinder base (96) approach each other, hydraulic oil, for example, is forced out of the displacement chamber (103) into the compensation chamber (104) at a controlled rate. During this process, the throttle disc (100) is pressed against the piston (95). As the volume of the compensation chamber (104) increases, the compensating spring (106) is compressed.

[0049] If the distance between the piston (95) and the cylinder base (96) is increased, oil is displaced from the compensation chamber (104) into the displacement chamber (103). This raises the throttle disc (100), thus increasing the flow cross-section of the piston (95). At the same time, the compensating spring (106) is relieved of tension.

[0050] During assembly, the following components are used to construct a trolley (6), see the Figures 23 and 24 At both ends of the infeed and outfeed mechanism (10), sets of rollers with one or more rollers (7) are mounted. The overall length of the carriage (6) is, for example, greater than or equal to 600 millimeters. The carriage (6) thus manufactured is inserted into a door guide rail (3). In the door guide rail (3), a first driver (5) and, for example, a second driver (9) are arranged at intervals from each other. The two frame-side drivers (5, 9) are fixed. The sliding door leaf (8) is attached to the carriage (6).

[0051] The Figure 10 The figure shows, for example, the retraction and extension mechanism (10) in a neutral position of the sliding door. None of the drivers (5, 9) are in contact with the retraction and extension mechanism (10). The extension mechanism (141) is in a ready position (146). In this ready position (146), the locking lever carrier part (151) is near the end of the extension guide system (33) pointing in the closing direction (305). The second spring energy storage device (142) is relaxed to a residual energy value. In addition, the torsion spring (161) is relieved, so that the locking lever (171) is in its pivoted stop position (176).

[0052] The drive elements (111, 283) of both retraction devices (81; 281) are each in a drive element parking position (112; 284). The first spring energy storage device (83) of the retraction and extension device (10) is charged. The piston rod (94) of the cylinder-piston unit (92) of the deceleration device (91) is extended. The carriage (121) rests with the second loading coupling surface (133) against the loading area (157) of the locking lever carrier part (151). The loading coupling (212) is closed.

[0053] When the sliding door leaf (8) or the drawer is closed in the closing direction (305), the locking lever (171) contacts the first follower (5), cf. Figure 11The locking lever (171), together with the locking lever carrier part (151), is displaced relative to the housing (11) in the retraction direction (16) along the first guide track system (33). The second spring energy storage unit (142) is tensioned. The locking lever carrier part (151) disengages from the slide (121). The loading clutch (212) opens. The first retraction device (81), including the slide (121), remains at rest. The drive element (283) of the second retraction device (281) remains in the second drive element parking position (284).

[0054] When the sliding door is closed further, e.g., manually, it is moved further relative to the fixed frame. The housing (11) is moved in the closing direction (305) relative to the locking lever carrier part (151), which is held in place by the follower (5). The second spring energy storage device (142) is charged. The locking lever carrier part (151) moves along the extension guide system (33). As soon as the front guide pins (152) reach the curved section (36) of the extension guide system (33), the locking lever carrier part (151) pivots relative to the longitudinal direction (15). The second spring energy storage device (142) continues to be charged until the front guide pins (152) have passed the apex (39) of the curved section (36). The front guide pin (152) is then pulled into the locking section (37) while relieving the second spring energy storage unit (142).

[0055] The Figure 12Figure 1 shows the extension device (141) in a locked position (147). The locking lever (171) with the locking lever carrier part (151) is pivoted, with the first guide pins (152) of the locking lever carrier part (151) seated in the locking section (37) of the extension guide system (33). The second guide pins (153) remain in the straight sections (35) of the extension guide track system (33). Both the first retraction device (81) and the second retraction device (281) remain in their locked positions. The first spring energy storage device (83) and the second spring energy storage device (142) are tensioned. The first drive element (5) has detached from the extension device (141).

[0056] In the presentation of the Figure 13The drive element (111) of the first feed device (81) has struck the driver (5). The first feed device (81) is triggered. The first drive element (111) pivots open and engages the stationary driver (5) in a form-fitting manner. The first spring energy storage device (83) loads the first drive element (111), which moves the housing (11) relative to the driver (5) towards the closed operating end position (301). The piston rod (94) of the cylinder-piston unit (92) is retracted. During this movement, the piston (95) in the cylinder (93) compresses the displacement chamber (103), so that the acceleration applied by means of the first spring energy storage device (83) is counteracted by a deceleration. The slide (121) has moved relative to the housing (11) in the feed direction (16). The extension device (141) remains in its locked position (147).

[0057] The Figure 14Figure 1 shows the retraction and extension device (10) in the closed operating end position (301). The first drive element (111) has a small residual distance from the end of the horizontal section (43) of the second guide track system (41) facing away from the extension device (141). The piston rod (94) of the cylinder-piston unit (92) is almost fully retracted. The first spring energy storage device (83) is largely relaxed, with its force in the retraction direction (16) being, for example, smaller than the static friction force of the retraction device (81) and the sliding door leaf (8). This difference between the aforementioned forces is, for example, smaller than the spring force of the second spring energy storage device (142) locked in the locking position (147), reduced by the frictional force of the extension device (141).

[0058] The extraction device (141) is cocked. The carriage (121) rests against the locking lever carrier part (151). The release clutch (211) between the first feed device (81) and the extraction device (141) is closed; see the detailed illustration of the Figure 15 The retraction device (81) and the extension device (141) are, for example, in contact with each other along a contact line (213). Further movement of the retraction device (81) in the retraction direction (16) is prevented by the extension device (141). In the exemplary embodiment, the sliding door appears closed to the operator in the closed operating end position (301).

[0059] In the Figure 16Figure 1 shows the beginning of the opening movement of the sliding door. For this, the sliding door leaf (8) is first manually pressed with the housing (11) from the closed operating end position (301) in the closing direction (305) until, for example, the remaining play is exhausted. The housing (11) is loaded relative to the drive element (111) of the retraction device (81), which is locked by means of the first follower (5). The first spring energy storage device (83) is further relieved. At the same time, the housing (11) displaces the locked latch lever carrier part (151) relative to the carriage (121). A thrust force is applied to the latch lever carrier part (151) via the release clutch (211). The force vector is oriented in the longitudinal direction (15). It loads the latch lever carrier part (151) in the release area (156).

[0060] The force vector of the release clutch loads the locked latch lever carrier part (151) outside a rectangle that is defined in this locked position (147) by the guide pins (152, 153). The force vector lies on the side of said rectangle facing away from the latch lever (171).

[0061] The force transmitted via the release clutch (211) is transferred to the locking lever carrier part (151) as a pivoting force and a thrust force. The locking lever carrier part (151) is pivoted by a lever arm about an instantaneous pivot axis and displaced in the retraction direction (16) by means of the pivoting force as a torque. This pivot axis forms an instantaneous center of rotation of the release movement of the locking lever carrier part (151). It lies parallel to the front guide pins (152) and the rear guide pins (153). During this movement, the first guide pin (152) moves from the locking section (37) into the curved section (36). As soon as the first guide pin (152) has passed the apex (39), the second energy storage device (142) is released. The retraction device (81) has unlocked the extension device (141) by means of the transmitted force.

[0062] The locking lever carrier part (151) is now loaded by means of the second spring energy storage device (142). The release clutch (211) is disengaged. Subsequently, the charging clutch (212) is closed. The transition from the release clutch (211) to the charging clutch (212) can be continuous.

[0063] The Figure 17Figure 1 shows the retraction and extension mechanism (10) when the sliding door is opened. The second spring energy storage device (142), while discharging, pulls the locking lever carrier part (151) relative to the housing (11). The charging clutch (212) remains closed. This causes the carriage (121) to be moved relative to the housing (11) by means of the locking lever carrier part (151). The carriage (121) pulls the first drive element (111) with it, which moves relative to the housing (11) towards its drive element parking position (112). The first drive element (111) continues to engage the follower (5). The housing (11) is thus moved relative to the drive element (111) of the retraction mechanism (81) in the opening direction (306). During this movement of the drive element (111) relative to the housing (11), the first spring energy storage device (83) is charged. Simultaneously, the piston rod (94) is pulled out relative to the cylinder (93). Figure 18 shows a detail of the closed charging coupling (212).

[0064] During the further opening process (305), the first drive element (111) pivots into the locking section (45). The first drive element (111) is locked in the drive element parking position (112). The first energy storage device (83) is charged. The follower (5) releases from the drive element (111). The sliding door can now be opened manually. The second spring energy storage device (142) is discharged down to a residual energy value. The carriage (121) limits the further stroke of the locking lever carrier part (151). The retraction device (81) is tensioned. Thus, the retraction device (81) limits the extending stroke of the extension device (141).

[0065] In the Figure 19 The drawing-in and drawing-out mechanism (10) is shown with the sliding door further open. The follower (5) has pivoted the locking lever (171) relative to the locking lever carrier part (151) against the force of the torsion spring (161). The drawing-in mechanism (81) remains unchanged.

[0066] As soon as the actuator (5) has left the locking lever (171), i.e., the sliding door is further open, the tension of the torsion spring (161) causes the locking lever (171) to pivot open. The retraction and extension mechanism (10) now resumes the movement in the Figure 10 The initial situation shown is displayed. The closing process is carried out as described above.

[0067] The sliding door can also be opened without the described over-pressing. Starting from the position described in the Figure 14In the closed operating position (301) shown, the sliding door with the housing (11) is pulled, e.g., manually, relative to the door frame in the opening direction (306). The housing (11) is pulled in the opening direction (306) relative to the temporarily stationary first drive element (111). This opens the release clutch (211). The extension device (141) remains in its locked position (147). When the sliding door is closed again, the housing (11) with the extension device (141), which remains locked, moves relative to the driver (5). There is no contact between the driver (5) and the extension device (141) during this movement. As soon as the retraction device (81) is released, the sliding door continues to close as described above.

[0068] If the sliding door is only partially opened, the retraction and extension mechanism (10) is positioned, for example, between the parts in the Figure 16 and 17The positions shown. When the sliding door is closed again, the operator pushes the sliding door against the force of the extension device (141) in the closing direction (305). In doing so, the follower (5) pushes the first drive element (111) towards the end position (113). The drive element (111) pulls the carriage (121), which is additionally loaded in the retraction direction (16) by means of the retraction device (81). Via the loading coupling (212), the carriage (121) pushes the latching lever carrier part (151) together with the latching lever (171) in the retraction direction (16). As soon as the first guide pin (152) of the latching lever carrier part (151) reaches the apex (39) of the curved section (36), the latching element carrier part (151) is secured in the locking position (147). At the same time, the drive element (111) has reached the closed operating end position (301). The sliding door is closed.

[0069] When the sliding door reaches the fully open position, the second drive element (283) contacts the second follower (9) during a partial stroke of the sliding door adjacent to the open operating end position (303). The second drive element (283) is released from its drive element parking position (284) and engages positively with the second follower (9). The combined acceleration and deceleration device (82) acts on the movement of the housing (11) relative to the second drive element (283) by superimposing acceleration via the first spring energy storage device (83) and deceleration via the cylinder-piston unit (92). The sliding door is moved with a delay into the open operating end position (303), where it stops without hitting anything. Figure 20 Figure 1 shows the combined insertion and extraction device (10) in this position. The second drive element (283) is in a second end position (285).

[0070] The Figure 21 Figure 1 shows a bidirectional combined retraction and extraction device (10). This device has a first retraction device (81), a second retraction device (281), a first extraction device (141), and a second extraction device (341). These are arranged in a common housing (11). Each extraction device (141; 341) is associated with one retraction device (81; 281).

[0071] The housing (11) is designed as a mirror image of a vertical central transverse plane. In the exemplary embodiment, this central transverse plane runs centrally through the cylinder guide system (51). The second extension guide system (68) is arranged in the housing (11). This is located in the illustration of the Figure 21 at the right end of the insertion and extraction device (10).

[0072] The first feed device (81) is designed as a mirror image of the second feed device (281). Each feed device (81; 281) has a drive element (111; 283) and a slide (121; 321). The slide (121) of the first feed device (81) is slidably mounted in the first feed guide system (41) and in the first extension guide system (33). The slide (321) of the second feed device (281) is slidably mounted in the second feed guide system (61) and in the second extension guide system (68). Both feed devices (81, 281) have a common acceleration device (83) and a common deceleration device (91). These are designed as described in connection with the first embodiment.

[0073] The first extraction device (141) has a first locking lever carrier part (151) and a first locking lever (171). These are designed as described in connection with the first embodiment.

[0074] The second extraction device (341) has a second locking lever carrier part (351) and a second locking lever (371). The second locking lever (371) is pivotably mounted relative to the second locking lever carrier part (351) within the second locking lever carrier part (351).

[0075] In this embodiment, both extension devices (141, 341) have a common second spring energy storage device (142). This device is deflected around a first deflecting disc (221) and a second deflecting disc (223) and connects the first locking lever carrier part (151) with the second locking lever carrier part (153). The second spring energy storage device (142) has, for example, three sections of different diameters. In this embodiment, the second section (145) has twice the diameter of the first section (144) and the third section (148). The first section (144) and the third section (148) are each deflected around one of the deflecting discs (221; 223). In this embodiment, the wrap angle is 180 degrees in each case. The middle section (145) has a lower spring stiffness than the two outer sections.

[0076] The sliding door opens from the closed operating position (301) as described above. Before the sliding door reaches an open operating position (303), the second extension device (341) is loaded. The sliding door is then moved into the open operating position (303) by means of the second retraction device (281). In this open operating position (303), further opening is prevented by the second extension device (341) and the second carriage (321). If the sliding door is manually pushed further in the opening direction (306), the second extension device (341) is released. The sliding door is then moved towards the closed position. This occurs analogously to the release from the closed operating position (301).

[0077] The Figure 22Figure 1 shows an end view of the sliding door system consisting of a door guide rail (3) and a carriage (6) for a sliding door. The carriage (6) is fully integrated into the door guide rail (3). The door guide rail (3) has a square or rectangular cross-section, with one edge length being a maximum of 15% longer than another edge length.

[0078] Combinations of the individual embodiments are also conceivable, as long as they fall within the scope defined by the attached claims. Reference symbol list:

[0079] 2 Sliding door system 3 Door guide rail 5 First follower 6 Carriage 7 Roller 8 Sliding door leaf 9 Second follower 10 Combined retraction and extension device 11 Housing 12 Top of (11), housing top 13 First longitudinal slot 14 Second longitudinal slot 15 Longitudinal direction 16 Retraction direction, relative to (11) 17 Extension direction, relative to (11) 18 Vertical direction 21 Housing screws 22 Crossbar 23 Connecting pin of (11) 31 First housing shell 32 Inside of (31) 33 First guide rail system, extension guide rail system 34 First guide rail 35 Straight section of (34) 36 Curved section of (34), curved section 37 Locking section 38 Sector angle, arc angle 39 Vertex of (36) 41 Second guide track system, first feed guide system 42 Second guide track 43 Horizontal section 44 Inclined section 45 Safety section 51 Third guide track systemCylinder guide system 52 Guide shell 53 Guide shell 54 Guide shell 61 Fourth guide track system, second retraction guide track system 65 Locking section of (61) 66 Spring retainer 68 Second extension guide system 71 Housing shell, second housing shell 81 Retraction device, first retraction device 82 Combined acceleration and deceleration device, drive of (81) 83 Acceleration device, first spring energy storage 84 First spring end of (83) 85 Second spring end of (83) 91 Deceleration device 92 Cylinder-piston unit 93 Cylinder 94 Piston rod 95 Piston 96 Cylinder base 97 Guide block 98 Guide block 99 Guide pin 100 Throttle plate 101 Piston rod head 102 Center piece of (97) 103 Displacement chamber 104 Compensation chamber 105 Cylinder head 106 Compensation spring 107 Cylinder disc 108 Piston rod seal 109 Throttle channels 111 Drive element 112 Drive element - park position 113 End position 114 Guide pin 115 Drive recess 116 Drive hook, pull-in hook 117 Drive hook,Push and pull hook 118 Spring receptacle 119 Guide block receptacle 121 Slide 122 Guide pin 123 Guide pin 124 Coupling side 125 Drive side 126 Reinforcing rib 127 Flanks 128 Relief opening 129 Guide opening 131 Coupling wall 132 Coupling surface, release coupling surface 133 Coupling surface, loading coupling surface 134 Leg of (129) 135 Bottom of (121) 136 Drive element recess 141 Pull-out device 142 Second energy storage, tension spring, drive of (141) 143 Second spring end of (142) 144 First section of (142) 145 Second section of (142) 146 Ready position 147 Locking position 148 Third area of ​​(142) 151 Detent lever support part, extraction device support part 152 Guide pin 153 Guide pin 154 Spring receptacle 155 Stop wall 156 Stop area, release area 157 Stop area, loading area 158 Transition area 161 Spring, screw torsion spring,Torsion spring 171 Detent lever 172 Impact surface 173 Swivel axis of (171) 174 Stop surface 176 Stop position 211 Coupling, axial coupling, release coupling 212 Coupling, axial coupling, loading coupling 213 Contact line 221 Deflection disc 223 Second deflection disc 281 Second feed device 282 Feed direction relative to (11) 283 Drive element, second drive element 284 Second drive element parking position 285 Second end position 301 Closed operating end position 303 Open operating end position 305 Closing direction relative to (5; 9) 306 Opening direction relative to (5; 9) 321 Slide, second slide 341 Second ejection device 351 Second detent lever carrier part 371 Second detent lever,

Claims

1. A retraction and extension mechanism (10) for sliding doors or drawers with a housing (11), in which at least one retraction mechanism (81; 281) having a combined acceleration and deceleration device (82) is arranged, and in which at least one extension mechanism (141; 341) is arranged, wherein the retraction mechanism (81; 281) and the extension mechanism (141; 341) can be coupled with each other depending on the stroke range by means of at least one switchable axial coupling (211; 212), characterized in that - it has a second retraction mechanism (281; 81) arranged in the mentioned housing (11), and - the combined acceleration and deceleration device (82) is part of both the first mentioned retraction mechanism (81; 281) and the second mentioned retraction mechanism (281; 81).

2. The retraction and extension mechanism (10) according to claim 1, characterized in that the housing (11) has two mirror-image housing shells (31, 71), wherein the extension mechanism (141; 341), the first retraction mechanism (81; 281) and the second retraction mechanism (281; 81) are each mounted in both housing shells (31, 71).

3. The retraction and extension mechanism (10) according to claim 1, characterized in that each retraction mechanism (81; 281) has a driving element (111; 283) guided within the housing (11), and that the extension mechanism (141; 341) has a latch lever bracket (151; 351) with a latch lever (171; 371) guided within the housing (11), wherein the latch lever (171; 371) is spring-loaded in the latch lever bracket (151; 351) so that it can pivot in the direction of a stop position (176).

4. The retraction and extension mechanism (10) according to claim 3, characterized in that at least the first retraction mechanism (81; 281) has a carriage (121; 321) connected with the driving element (111; 283), which has a coupling wall (131) that points in a retraction direction (16) of the first retraction mechanism (81) and can be abutted against the extension mechanism (141; 341).

5. The retraction and extension mechanism (10) according to claim 1, characterized in that the combined acceleration and deceleration device (82) has a deceleration device (91) with a cylinder piston unit (92) mounted on slides in the housing (11).

6. The retraction and extension mechanism (10) according to claim 1, characterized in that it has a second extension mechanism (341; 141), which can be coupled with the second retraction mechanism (281; 81) at least depending on the stroke range.

7. The retraction and extension mechanism (10) according to claim 6, characterized in that the first extension mechanism (141; 341) and the second extension mechanism (341; 141) have a shared spring energy storage system (142) as the drive.

8. A carriage (6) with a retraction and extension mechanism (10) according to claim 1, and with at least two rollers (7) front mounted on the housing (11).

9. A sliding door system (2) comprised of a door guide rail (3) and a carriage (6) according to claim 8, characterized in that at least two spaced apart drivers (5, 9) are arranged in the door guide rail (3), wherein a first driver (5; 9) can be contacted with the latch lever (171; 371) of the extension mechanism (141; 341) and a second driver (9; 5) can be contacted with a driving element (283; 111) of the second retraction mechanism (281; 81).

10. The sliding door system (2) according to claim 9, characterized in that the door guide rail (3) has a cross-sectional surface whose height differs from its width by at most 15 %.

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