Infeed and outfeed device with two switchable axial couplings

Abstract

A retraction and extension device (10) for sliding doors or drawers with a housing (11) in which at least one retraction device (81; 281) is arranged and in which at least one extension device (141; 341) is arranged, wherein the retraction device (81; 281) and the extension device (141; 341) are coupling depending on the stroke range by means of at least one switchable axial coupling (211; 212), characterized in that - that the extension device (141; 341) has a self-locking locking position (147), - that the infeed device (81; 281) and the outfeed device (141; 341) can be coupled both by means of a release coupling (211) designed as a switchable axial coupling (211) and by means of a loading coupling (212) designed as a switchable axial coupling (212), wherein at any one time at most one of the said switchable axial couplings (211; 212) is closed, - that the release clutch (211) transmits a force oriented in the longitudinal direction (15) of the retraction device (81), so that the extension device (141) is unlocked and released from the locking position (147) by means of a pivoting-push movement and - that the release clutch (211) opens after the release of the extension device (141; 341) and subsequently the extension device (141; 341) closes the loading clutch (212), so that when the loading clutch (212) is closed, the extension device (141; 341) loads the retraction device (81; 281).

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 is arranged and in which at least one extension device is arranged, wherein the retraction device and the extension device can be coupled depending on the stroke range by means of at least one switchable axial coupling.

[0002] Such a loading and unloading 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] DE 10 2018 008 203 A1 discloses a self-retracting device whose energy storage unit can be decoupled from the drive element and recharged by means of a storage charging device.

[0004] The present invention is based on the problem of developing a retraction and extraction device with a small number of components.

[0005] This problem is solved by the features of the main claim. For this purpose, the extension device has a self-locking position. The retraction device and the extension device can be coupled by means of both a release clutch designed as a switchable axial clutch and a loading clutch designed as a switchable axial clutch, whereby at any one time only one of the aforementioned switchable axial clutches is closed. The release clutch transmits a longitudinally oriented force from the retraction device, so that the extension device is unlocked and triggered from the locked position by means of a pivoting-push movement. The release clutch opens after the extension device has been triggered. Subsequently, the extension device closes the loading clutch, so that when the loading clutch is closed, the extension device loads the retraction device.

[0006] The retraction and extension mechanisms together form two switchable axial couplings: a release coupling and a loading coupling. These two axial couplings are spatially separated from each other. They open and close independently. During the first operating phase, both the release coupling and the loading coupling are open. In this first phase, the extension mechanism is loaded and locked, and the retraction mechanism is unloaded. The sliding door or drawer is then closed to its operating end position.

[0007] In a second operating phase, with the extension mechanism locked and the retraction mechanism unloaded, the release clutch is closed. When an external force, oriented in the closing direction, is applied to the sliding door or drawer, the housing of the retraction and extension mechanism is displaced relative to the retraction mechanism. The retraction mechanism transmits a pivoting-push motion to the locked extension mechanism via the release clutch. The extension mechanism is released, and the release clutch opens.

[0008] In the subsequent third operating phase, the extension device closes the charging coupling. The retraction device is loaded while the extension device is simultaneously unloaded.

[0009] Further details of the invention will become apparent from the dependent claims and the following description of schematically illustrated embodiments. Fig. 1: Combined insertion and extraction device; Fig. 2: Fig. 1 with the housing shell removed; Fig. 3: Front view of the Fig. 1; Fig. 4: Housing shell; Fig. 5: Detail of the Fig. 4; Fig. 6: Carrying element; Fig. 7: Sled; Fig. 8: Locking lever carrier part with locking lever; Fig. 9: Cylinder-piston unit; Fig. 10: Infeed and outfeed device in a starting position; Fig. 11: Infeed and outfeed device after the start of the infeed movement; Fig. 12: Infeed and outfeed device with tensioned outfeed device; Fig. 13: Infeed and outfeed device after the infeed device has been triggered; Fig. 14: Infeed and outfeed device in an operating end position; Fig. 15: Detail of the release clutch in the operating end position; Fig. 16: Retraction and retraction device when opening from the operating end position; Fig. 17: Retraction and retraction device with the sliding door partially open; Fig. 18: Detail of the charging coupling; Fig. 19: Infeed and outfeed device with pivoted locking lever; Fig. 20: Retraction and retraction device when the sliding door is fully open; Fig. 21: Bidirectional insertion and extraction device; Fig. 22: Front view of a system with support rail and sliding door; Fig. 23: System with sliding door, open; Fig. 24: System with sliding door, closed.

[0010] The Fig. Figures 1-9 show a combined insertion and extraction device (10) and some of its individual parts. In the Fig. Figures 10-20 show individual operating states of the insertion and extension device (10). Such insertion and extension devices (10) are used, among other things, in sliding door systems (2) or in drawer systems.

[0011] The insertion and extension device (10) is used in a sliding door system (2), see the Fig. 22-24, for example, part of a carriage (6) 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) 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).

[0012] 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.

[0013] 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.

[0014] 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 and extraction device (10) can be configured without the second insertion device (281). 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 exemplary 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). In the exemplary embodiment, 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 illustrations of the Fig. For 1, 2 and 10-20, the 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).

[0015] 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.

[0016] 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).

[0017] 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).

[0018] 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. Fig. 9. The cylinder (93) is mounted in the housing (11) so as to be slidably mounted in the longitudinal direction (15). In the illustrations of the Fig. 1 and Fig. 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). In an embodiment without the second drive element (281), the acceleration device (83) can be fixed to the housing. The deceleration device (91) is then designed such that either the cylinder (93) or the piston rod (94) is movable relative to the housing (11).

[0019] 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 Fig. In the 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.

[0020] 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. Fig. 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 Fig. 2 and the Fig. Figures 10-21 show the insertion and extraction device (10) without the second housing shell (71).

[0021] 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 Fig. 1 and Fig. In the two longitudinal slots (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 Fig. 1 and Fig. Figure 2 shows a middle 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).

[0022] From the aforementioned Fig. 1 and Fig. The second drive element (283) protrudes from the second longitudinal slot (14) shown on the right. The second drive element (283) is shown in a second drive element parking position (284) in the figures mentioned. 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.

[0023] The Fig. Figure 4 shows the inside (32) of the first case shell (31). Fig. Figure 5 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).

[0024] 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, for example, 22% of the length of the housing (11). The first guide rail (34) has a constant height, which in the exemplary embodiment is 3 millimeters.

[0025] 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 164 degrees in the exemplary embodiment. This sector angle (38) lies, for example, between 150 degrees and 180 degrees. It can be between 120 degrees and 180 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). If necessary, the outer boundary of the guide track (34) in the area of ​​the curved section (36) and the locking section (37) can be omitted, at least in part.

[0026] 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).

[0027] 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).

[0028] The third guideway system (51) is shown in the illustrations of the Fig. 4 and Fig. 5 is arranged on the side facing away from the extension guide rail system (33) next to the second guide rail system (41). The third guide rail system (51) is also referred to below as the cylinder guide system (51). It is designed as a straight guide. The length of the third guide rail system (51) is, for example, 12.5% ​​of the length of the housing (11). This third guide rail 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).

[0029] 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) may also have, for example, a different length, a differently arranged safety section, etc., than the second guide rail system (41).

[0030] 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).

[0031] In the Fig. Figure 6 shows a drive element (111; 283). Both drive elements (111; 283) are, for example, identically designed. The individual drive element (111; 283) has a guide pin (114) on each side and two drive hooks (116, 117) that define a drive recess (115).

[0032] The two drive hooks (116, 117) are a draw-in hook (116) located at the rear in the draw-in direction (16) and a push-in and pull-out hook (117) located at the front in the draw-in direction (16). Optionally, the drive element (111; 283) can 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 device (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.

[0033] In the presentation of the Fig. 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 formed by a guide block (97; 98) in each case. 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.

[0034] 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 Fig. 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. Fig. 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).

[0035] In the Fig. Figure 7 shows the slide (121) of the first feed device (81). 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).

[0036] 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).

[0037] 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).

[0038] 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).

[0039] 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).

[0040] The release coupling surface (132) transitions smoothly into the coupling wall (131) and then into the further coupling surface (133), a loading coupling surface (133). 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). 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).

[0041] 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 Fig. 2 The guide pins (114) of the first drive element (111) penetrate the guide openings (129) of the slide (121).

[0042] The base (135) of the slide (121) is plate-shaped. On the drive side (125), the slide (121) has a drive element recess (136).

[0043] The Fig. Figure 8 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).

[0044] 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 Fig. 2 and Fig. 8 The locking lever (171) is 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. Fig. 19. The pivot axis (173) of the locking lever (171) lies parallel to the guide pins (152, 153) on both sides.

[0045] 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 Fig. 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).

[0046] 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).

[0047] 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.

[0048] 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.

[0049] The Fig. Figure 9 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).

[0050] 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.

[0051] 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.

[0052] 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.

[0053] During assembly, the following components are used to construct a trolley (6), see the Fig. 23 and Fig. 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 produced 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).

[0054] The Fig. Figure 10 shows, for example, the retraction and extension mechanism (10) in the center 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 swung-out stop position (176).

[0055] 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.

[0056] 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. Fig. 11. The 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).

[0057] 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).

[0058] The Fig. Figure 12 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).

[0059] In the presentation of the Fig. 13 has struck the drive element (111) of the first feed device (81) against the driver (5). The first feed device (81) is triggered. The first drive element (111) is pivoted and positively engages the stationary driver (5). 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 process, 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).

[0060] The Fig. Figure 14 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).

[0061] 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 Fig. 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 is visually closed for the operator in the closed operating end position (301).

[0062] In the Fig. Figure 16 shows the beginning of the opening movement of the sliding door. For this, the sliding door leaf (8) with the housing (11) is first pressed in from the closed operating end position (301) in the closing direction (305) by means of an external force until, for example, the remaining clearance 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 latching lever carrier part (151) relative to the carriage (121). A thrust force is applied to the latching lever carrier part (151) via the release clutch (211). The force vector is oriented in the longitudinal direction (15). It loads the latching lever carrier part (151) in the release area (156).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).

[0063] 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.

[0064] The locking lever carrier part (151) is now loaded by means of the second spring energy storage device (142). The drive of the extension device (141), released by the unlocking mechanism, disconnects the release clutch (211). Subsequently, the loading clutch (212) is closed. The transition from the release clutch (211) to the loading clutch (212) can occur continuously.

[0065] The Fig. Figure 17 shows the retraction and extension mechanism (10) when the sliding door is opened. The second spring energy storage device (142) pulls the locking lever carrier part (151) relative to the housing (11) as it discharges. 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). Fig. Figure 18 shows a detail of the closed charging coupling (212).

[0066] 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).

[0067] In the Fig. Figure 19 shows the retraction and extension mechanism (10) with the sliding door further open. The actuator (5) has pivoted the locking lever (171) relative to the locking lever support part (151) against the force of the torsion spring (161). The retraction mechanism (81) remains unchanged.

[0068] 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 Fig. The starting position shown in section 10 is displayed. The closing process is carried out as described above.

[0069] The sliding door can also be opened without the described over-pressing. Starting from the position described in the Fig. In the closed operating position (301) shown in Figure 14, the sliding door with the housing (11) is pulled, for example, 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.

[0070] If the sliding door is only partially opened, the retraction and extension mechanism (10) is positioned, for example, between the parts in the Fig. 16 and Fig. The positions shown in Figure 17 are 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.

[0071] 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. Fig. Figure 20 shows the combined insertion and extraction device (10) in this position. The second drive element (283) is in a second end position (285).

[0072] The Fig. Figure 21 shows a bidirectional combined insertion and extraction device (10). This device has a first insertion device (81), a second insertion 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 insertion device (81; 281).

[0073] 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 Fig. 21 at the right end of the insertion and extraction device (10).

[0074] The first feed device (81) is designed as a mirror image of the second feed device (281). Each of the feed devices (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 pull-out 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 pull-out guide system (68).

[0075] Both intake 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.

[0076] 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.

[0077] 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).

[0078] 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.

[0079] 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).

[0080] The Fig.Figure 22 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 enclosed in 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.

[0081] Combinations of the individual embodiments are also conceivable. Reference symbol list: 2 sliding door systems 3 Door guide rail 5 drivers, first driver 6 trolleys 7 roller 8 sliding door leaf 9 second drive 10 Device, combined insertion and extraction device 11 cases 12 Top of (11), top of case 13 longitudinal slots, first longitudinal slots 14 longitudinal slots, second longitudinal slot 15 Longitudinal direction 16 Direction of inflow, relative to (11) 17 Direction of extraction, relative to (11) 18 Altitude 21 screws, housing screws 22 Crossbar 23 Connecting pins of (11) 31 Housing shell, first housing shell 32 Inside of (31) 33 first guide rail system, extension guide rail system 34 first guideway 35 straight section of (34) 36 curved section of (34), arc section 37 Locking section 38 sector angles, arc angles 39 vertex of (36) 41 second guide rail system, first feed guide system 42 second guideway 43 horizontal section 44 sloping section 45 Safety section 51 third guideway system, cylinder guide system 52 guide tray 53 Guide tray 54 Guide tray 61 fourth guide rail system, second infeed guide rail system 65 Safety section of (61) 66 Spring holder 68 second drawer guide system 71 Housing shell, second housing shell 81 Feeding device, first feeding device 82 combined acceleration and deceleration device, drive of (81) 83 Acceleration device, first spring energy storage device 84 first spring end of (83) 85 second spring end of (83) 91 Delay device 92 cylinder-piston unit 93 cylinders 94 Piston rod 95 pistons 96 Cylinder base 97 Lead block 98 guide block 99 guide pins 100 throttle disc 101 Piston rod head 102 Middle section of (97) 103 Displacement space 104 Compensation room 105 Cylinder head 106 Compensating spring 107 Cylinder disc 108 Piston rod seal 109 throttle channels 111 Carrying element 112 driving element parking position 113 End position 114 guide pins 115 Exemption for accompanying persons 116 Carrying hooks, insertion hooks 117 Carrying hooks, push and pull hooks 118 Spring mount 119 Guide block recording 121 sleds 122 guide pins 123 guide pins 124 Coupling side 125 Takeaway page 126 Reinforcing rib 127 flanks 128 Breakthrough for Relief 129 Leadership Breakthrough 131 Coupling wall 132 Coupling surface, release coupling surface 133 Coupling surface, loading coupling surface 134 thighs of (129) 135 Ground of (121) 136 Drive element recess 141 Extraction device 142 second energy storage device, tension spring, drive of (141) 143 second spring end of (142) 144 first section of (142) 145 second section of (142) 146 Standby position 147 Locking position 148 third section of (142) 151 Locking lever carrier part, extraction device carrier part 152 guide pins 153 guide pins 154 Spring mount 155 Stop wall 156 Stop range, trigger range 157 Stop area, loading area 158 Transition area 161 Spring, screw torsion spring, leg spring 171 Locking lever 172 impact area 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 pulley 281 second feed device 282 Direction of inflow relative to (11) 283 Carrying element, second carrying element 284 second drive element parking position 285 second final position 301 closed operating position 303 open operating end position 305 Closing direction relative to (5; 9) 306 Opening direction relative to (5; 9) 321 sleds, second sled 341 second extraction device 351 second locking lever carrier part 371 second locking lever

Claims

[1] A retraction and extension device (10) for sliding doors or drawers with a housing (11) in which at least one retraction device (81; 281) is arranged and in which at least one extension device (141; 341) is arranged, wherein the retraction device (81; 281) and the extension device (141; 341) can be coupled depending on the stroke range by means of at least one switchable axial coupling (211; 212), characterized by , - that the extension device (141; 341) has a self-locking locking position (147), - that the infeed device (81; 281) and the outfeed device (141; 341) can be coupled both by means of a release coupling (211) designed as a switchable axial coupling (211) and by means of a loading coupling (212) designed as a switchable axial coupling (212), wherein at any one time at most one of the said switchable axial couplings (211; 212) is closed, - that the release clutch (211) transmits a force oriented in the longitudinal direction (15) of the retraction device (81), so that the extension device (141) is unlocked and released from the locking position (147) by means of a pivoting-push movement and - that the release clutch (211) opens after the release of the extension device (141; 341) and subsequently the extension device (141; 341) closes the loading clutch (212), so that when the loading clutch (212) is closed, the extension device (141; 341) loads the retraction device (81; 281). [2] Infeed and outfeed device (10) according to claim 1, characterized by , that the closed release clutch (211) has either a contact point or a contact line (213) between the retraction device (81; 281) and the release device (141; 341), wherein a contact line (213) is oriented parallel to an instantaneous pivot axis for supporting the pivot-thrust movement. [3] Infeed and outfeed device (10) according to claim 1, characterized by , that the release coupling (211) has a release coupling surface (132) on the retraction device (81; 281) and a release area (156) on the extraction device (141), wherein the radius of curvature of the release area (156) is smaller than the radius of curvature of the release coupling surface (132). [4] Infeed and outfeed device (10) according to claim 1, characterized by , that the closed loading coupling (212) has a loading coupling surface (133) at the infeed device (81; 281) and a loading area (157) at the outfeed device (141; 341), wherein the radius of curvature of the loading area (157) is smaller than the radius of curvature of the loading coupling surface (133). [5] Infeed and outfeed device (10) according to claim 1, characterized by, that the extraction device (141; 341) has a locking lever carrier part (151; 351) movable in the housing (11) and that the insertion device (81; 281) has a slide (121; 321) movable linearly in the housing (11), wherein both the release clutch (211) and the loading clutch (212) are formed by means of the locking lever carrier part (151; 351) and the slide (121; 321). [6] Infeed and outfeed device (10) according to claim 5, characterized by , that the extension device (141; 341) has a spring energy storage element (142) as a drive element, which loads the locking lever carrier part (151; 351) relative to the housing (11). [7] Infeed and outfeed device (10) according to claim 1, characterized by, that the housing (11) has an extension guide system (33; 68) for guiding a locking lever carrier part (151; 351) which has a straight section (35) oriented in a longitudinal direction (15), an arc section (36) with a sector angle (38) between 120 degrees and 180 degrees and a locking section (37) adjoining it. [8] Infeed and outfeed device (10) according to claim 7, characterized by , that the insertion device (81; 281) has a slide (121; 321) connected to a drive element (111; 283) which is guided in the housing (11) both in the extension guide system (33; 68) and in an insertion guide system (41; 61). [9] Infeed and outfeed device (10) according to claim 1, characterized by , that the infeed device (81; 281) has a combined acceleration and deceleration device (82) connected to a drive element (111; 283). [10] Infeed and outfeed device (10) according to claim 1, characterized by , - that a second feed device (281; 81) is arranged in the housing (11), wherein the feed directions (16) of the first feed device (81; 281) and the second feed device (281; 81) are oriented opposite to each other and - that the first retraction device (81; 281) and the second retraction device (281; 81) have a common deceleration device (91) and a common acceleration device (83).

Images