EP2247812A1

EP2247812A1 - Acceleration and deceleration device having two driving elements

Info

Publication number: EP2247812A1
Application number: EP09711259A
Authority: EP
Inventors: Günther Zimmer; Martin Zimmer
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-13
Filing date: 2009-02-13
Publication date: 2010-11-10
Anticipated expiration: 2029-02-13
Also published as: JP5559064B2; US8418406B2; ES2404004T3; JP2011511894A; DE102008009046A1; PL2247812T3; US20110023370A1; WO2009100717A1; DE102008009046B4; EP2247812B1

Abstract

The invention relates to an acceleration and deceleration device (20) which has at least one energy store (32) and at least one piston (61, 81) which is guided in a cylinder (43) by means of a driving element, and also to a sliding door arrangement having an acceleration and deceleration device of said type. For this purpose, the acceleration and deceleration device has a second driving element (131, 111) which either guides a further piston, which is separate from the abovementioned piston, in the cylinder or guides the cylinder relative to the former piston. The present invention serves to develop a compact acceleration and deceleration device and also a sliding door arrangement having an acceleration and deceleration device of said type, which enables a controlled approach to end positions in two stroke directions.

Description

Acceleration and deceleration device with two

driver elements

Description:

The invention relates to an acceleration and deceleration device which has at least one energy store and at least one piston guided in a cylinder by means of a driving element and a sliding door arrangement with such an acceleration and deceleration device.

From DE 10 2006 019 351 Al an acceleration and deceleration device is known. In order to move the sliding door leaf into the end position under control both when closing and when opening, two acceleration and deceleration devices are required. This requires a large amount of space.

The present invention is therefore based on the problem of developing a compact acceleration and deceleration device and a sliding door arrangement with such an acceleration and deceleration device that allows a controlled approach of end positions in two stroke directions.

This problem is solved with the features of the main claim. For this purpose, the acceleration and deceleration Device on a second driving element, which either leads a separate piston from the above-mentioned piston in the cylinder or which leads the cylinder relative to the first-mentioned piston.

Further details of the invention will become apparent from the dependent claims and the following description of schematically illustrated embodiments.

Figure 1: open sliding door; Figure 2: closed sliding door; Figure 3: partial section of the sliding door assembly; Figure 4: Dimetric view of an acceleration and

Delay device;

FIG. 5: detail of the device from FIG. 4; FIG. 6: acceleration and deceleration device with the sliding door open; FIG. 7: acceleration and deceleration device after leaving the actuating element; FIG. 8: acceleration and deceleration device before reaching a second actuating element; FIG. 9: acceleration and deceleration device with the sliding door closed;

Figure 10: Detail of the acceleration and

Delay device of Figure 6; Figure 11: Detail of the acceleration and

Delay device of Figures 7 and 8; FIG. 12: acceleration and deceleration device with internal parking positions; FIG. 13: Dimetric representation of a device according to FIG

FIG. 12; FIG. 14: detail from FIG. 12; FIG. 15: Device according to FIG. 12 when opened

Sliding door; FIG. 16: device according to FIG. 12 when leaving the

Actuating element; FIG. 17: device according to FIG. 12 before the next one

Contacting the actuator; FIG. 18: Device according to FIG. 12 with closed one

Sliding door;

FIG. 19: detail of the device according to FIGS. 16 and 17; FIG. 20: detail of the device according to FIG. 18;

Figure 21: acceleration and deceleration device with hydraulic delay device;

FIG. 22: Dimetric view of the device according to FIG. 21; FIG. 23: detail from FIG. 21.

Figures 1 and 2 show a sliding door assembly with a sliding door leaf (2) which is guided by means of a guide system (10) in a door frame (3). Here, Figure 1 shows the sliding door leaf (2) in an open position and Figure 2 of this sliding door leaf (2) in a closed position. In the figure 3 is a plan view of an open sliding door leaf (2) shown, wherein the guide system (10) is shown in a longitudinal section.

Instead of in a door frame (3), the sliding door leaf (2) can be performed in differently shaped parts with guiding and supporting functions. The guide system (10) can also be used on sliding windows, drawers, etc.

The sliding door leaf (2) is for example a cabinet door leaf, a door leaf for the separation of rooms in apartments, industrial buildings, etc. It can be made for example of plastic, metal or wood with or without glass. In the open position, cf. Figure 1, the sliding door leaf (2) protrudes, for example, with the handle portion of the Türum- frame (3) out. In the closed position, cf. Figure 2, the sliding door leaf (2) closes the door opening (4) of the door frame (3). A wall-side door leaf receptacle (6) and a vertical frame part (5) delimit the door opening (4) and the door leaf lift (9) between the open and the closed position of the sliding door leaf (2). The overall length of the door frame (3) is thus determined by the length of the sliding door leaf (2) and the Türblattstub (9). The length of the sliding door leaf (2) is in the embodiment 600 millimeters and the Türblattstub (9) 500 millimeters. Above the sliding door leaf (2), the door frame (3) in this embodiment comprises a guide channel (8) in which the guide system (10) is arranged.

The guide system (10) comprises two fixed (11, 12) and one moving guide part (14). The fixed guide parts (11, 12) are fastened in the guide channel (8) in this embodiment. The relatively movable guide part (15) is arranged on the upper side of the sliding door leaf (2). It is also conceivable to arrange the two guide parts (11, 12) designated here as fixed on the moving sliding door leaf (2). They are then movable relative to a guide channel (8) mounted second guide member (14).

The fixed guide parts (11, 12) are, for example, two actuating elements (11, 12) arranged at a distance from each other. The actuating element (11) shown on the left has a distance of, for example, 190 millimeters from the left end of the guide channel (8), the actuating element shown on the right. ment (12) has the same distance from the right end of the guide channel (8).

The single actuating element (11, 12) is, for example, a bolt (11, 12) which is secured by means of fastening elements (13), e.g. is attached to the ceiling of the guide channel (8). For example, it has a square cross section with an edge length of 12 millimeters. The actuating elements (11, 12) can also be fastened laterally on the longitudinal sides of the guide channel (8).

The moving guide part (14) comprises groups (16) of guide rollers (17) arranged on an adapter component (15) on the upper side of the sliding door leaf (2) and an acceleration and deceleration device (20). In the embodiment shown here - the sliding door leaf (2) has a mass of 80 kilograms, for example - two groups (16) of four guide rollers (17) each are arranged on the sliding door leaf (2), cf. FIG. 3. In each case one group (16) is arranged on the left in these illustrations and a group (16) on the right of the acceleration and deceleration device (20). In each group (16) are in this illustration two guide rollers (17) upwards and the other two down over the sliding door leaf (2) over. The length of each group (16) - in the longitudinal direction of the sliding door leaf (2) - is here 100 millimeters.

FIG. 4 shows a dimetric representation of eg a pneumatic acceleration and deceleration device (20). It comprises a central cylinder tube (21), on the two end sides of each of which a frame part (151, 161) is arranged. In both frame parts (151, 161), a catch element (111, 131) is in each case longitudinally displaceable away from a parking position (121, 141) in one of the parking positions End position (122, 142) out. The entrainment element (131) shown on the right is in the parking position (141), where it is pivoted there, for example, by 15 degrees in the direction of the nearest end face of the acceleration and deceleration device (20). The left driving element (111) is in the opposite of the parking position (121) arranged end position (122). Below the cylinder tube (21), an energy store (32) is arranged, which connects the two driving elements (111, 131). This energy store (32) is for example a tension spring (32). The length of the acceleration and deceleration device (20) in this embodiment is 400 millimeters, that is two thirds of the length of the sliding door leaf (2). The height of the installed device (20) is for example 15 millimeters. To the acceleration and deceleration device (20) on the

To attach the sliding door leaf (2) or to an adapter (15) placed on the sliding door leaf (2) are used e.g. two screws, each in a through hole (27) are used.

In this exemplary embodiment, the two frame parts (151, 161) in each case consist of two guide parts (152, 153, 162, 163) which are mirror images of each other and which are e.g. are interconnected by means of a clip connection.

Figures 5, 10 and 11 show longitudinal sections of the cylinder tube (21). In the cylinder tube (21) two pistons (61, 81) of a cylinder-piston unit (42) are arranged. Both pistons (61, 81) constructed in mirror image relative to one another are in the same cylinder (43) by means of a respective piston rods (67, 87) in FIG

Longitudinally displaceable. In each case, a piston rod (67, 87) in each case penetrates an end face (46, 47) of the cylinder (43). The piston rod head (68, 88) of each piston rod (67, 87) is pivotable on one take-up member at a time. meelement (111, 131) attached, see. Figures 6 - 9. The strokes (123, 143) of the Mitnähmeelemente (111, 131) and thus also the piston strokes are in this embodiment, each 68 millimeters.

The cylinder interior (44) is for example 117 millimeters long and has e.g. constant inner diameter of 13 millimeters. The length of the cylinder interior (44) is thus shorter than the sum of the strokes (123, 141) of the driving elements (111, 131). The cylinder inner wall (45) can be smooth. Optionally, one or more grooves may be introduced in regions on the inner wall (45) of the cylinder (43). These may e.g. be arranged symmetrically to the central transverse plane of the cylinder (43) and have a length of, for example, 30% of a piston stroke. The width of a groove is then e.g. a millimeter.

The single piston (61, 81), cf. 5 is, for example, in two parts from a piston rod part (62, 82) facing the associated piston rod seal (51, 52) and one

Piston head part (63, 83) constructed. The piston rod (67, 87) is plugged into the piston bottom part (62, 82) and is e.g. bonded. On the opposite end face, the piston head part (62; 82) is designed in the shape of a cylinder for mounting the piston head part (63; 83). In the exemplary embodiment, a free space (64, 84) is formed in the piston head part (63, 83), into which, for example, when the two piston parts (62, 63, 82, 83) are glued, the air is displaced.

Between the two piston parts (62, 63, 82, 83) a sealing element (71, 91) is positively seated with a clamping area (73, 93). This is for example cup-shaped. Its length is for example 30% larger than its diameter. The diameter in this exemplary embodiment is 95% of the diameter of the cylinder (43). The wall thickness of the sealing element (71, 91) tapers from the clamping region (73, 93) to the end of the sealing element (71, 91) facing away from the clamping region (73, 93). Here an inner collar (74, 94) is arranged, which projects into a receiving area (65, 85) with play. For example, longitudinal grooves can be arranged on the outer surface of the sealing element 71, 91. The sealing element (71, 91) consists, for example, of nitrile butadiene rubber and has, for example, a halogenated surface.

In the receiving area (65; 85) of the piston head part (63; 83), a further sealing element (72; 92), for example, is seated adjacent to an abutment flange (66; a shaft seal (72; 92). Its inner diameter is larger than the diameter of the receiving area (65; 85) and its outer diameter is at least as large as the smallest inner diameter of the cylinder. The annular groove (75, 95) of the sealing ring (61, 81) shown here points in the direction away from the piston rod (67, 87).

Optionally, in the receiving area (65; 85) another sealing element, e.g. an O-ring, be arranged. By means of this O-ring then the other two sealing elements (71, 72, 91, 92) are biased during assembly.

Both pistons (61, 81) thus carry piston sealing elements (71, 72, 91, 92), which in the process achieve a sealing effect only in one stroke direction, namely when the individual piston (61, 81) retracts into the cylinder (43).

In this embodiment, the device (20) comprises a displacement chamber (101) which is delimited by both pistons (61, 81) and two compensation chambers (102, 103) each of a piston (61, 81) and a cylinder end face (46; 47) are limited. The cylinder interior (44) is insulated, for example against the environment (1). However, the cylinder-piston unit (42) can also be designed so that the compensation chambers (102, 103) communicate with the environment (1).

At least during rapid retraction of a piston (61, 81) into the cylinder (43), the piston (61, 81) virtually hermetically separates a displacement (101) from a compensation chamber (102, 103). When the individual piston (61, 81) is extended, air flows out of the respective compensation (102, 103) via the sealing elements (71, 72, 91, 92) into the displacement chamber (101).

The individual entrainment element (111, 131) engages around the respective piston rod head (68, 88) and is guided in the frame part (151, 161) by means of two guide pin pairs. The center line of the piston rod head (68; 88) and the center lines of the guide pin pairs lie here in a common plane. The portion of the entrainment element (111, 131) protruding from the frame part (151, 161) has a receiving recess (112, 132) which is separated by two driving surfaces (113, 114, 133, 134) offset in the longitudinal direction and an open surface (115; 135) is limited. The two driving surfaces (113, 114, 133, 134) are e.g. arranged normal to the plane which is spanned by the center axes of the two guide pins. The free surface (115; 135) lies, for example, parallel to this plane. The transitions between the surfaces (113, 115, 115, 114, 133, 135, 135, 134) are rounded. The individual driving element (111, 131) is elastically deformable with respect to its guide bolts. For example, it can be pressed in during the first assembly in order to insert the actuating element (11, 12).

The two guiding parts (152, 153, 162, 163), which encompass a driving element (111, 131), have to guide the driving elements. elements (111; 131) slots (154; 164). At their end facing away from the cylinder (43), they have curved regions (155, 165) away from the receiving depressions (112, 132). In the parking position, the guide pin pair facing away from the cylinder (43) is seated in the curved area (155, 165) of the oblong holes (154, 164).

The frame parts (151, 161) have a chamfer (156, 166) in the area of the parking position (121, 141) and a depression (157, 167) in an axial stroke area.

The tension spring (32) - it has, for example, a constant cross section - is held in receiving eyes in both entrainment elements (111, 131). It is also conceivable to use two energy sources (32), which are each attached to a carrier element (111, 131) and, for example, to a frame part (151, 161).

When mounting the acceleration and deceleration device (20), for example, first the entrainment elements (111, 131) with the piston rods (67, 87), piston rod seals (51, 52) and the pistons (61, 81) with the piston seals ( 71, 72, 91, 92) are preassembled. These units are then used, for example, in the frame parts (151; 161). Now, the frame parts (151, 161) from both sides of the cylinder tube (21) and set the piston (61, 81) inserted into the cylinder (43). After mounting the piston rod seals (51, 52), the tension spring (32) between the driving elements (111, 131) is then mounted. This entire unit can now - be mounted on a sliding door leaf (2) - with or without adapter (15). Figures 6 - 9 show in a longitudinal section the acceleration and deceleration device (20) when closing the sliding door leaf (2).

With the sliding door leaf open (2), cf. Figures 1, 4 and 6, is the right Mitnähmeelement (131) in a latched parking position (141). The left entrainment element (111) is in the parking position (121) facing away from the end position (122) of its stroke (123) in engagement with the left actuating element (11).

The energy store (32) is partially charged or relaxed, for example. In the cylinder (43), the left piston (61) is in its right end position. Here he touches, for example, the right piston (81), which is also in its right end position. However, the two pistons (61, 81) need not touch. The displacement space (101), cf. FIG. 10, is compressed to a minimum. Likewise, the right equalization space (103) has reached its minimum volume. The left compensation chamber (102) has its maximum volume in the illustrated position, cf. FIG. 10.

If the sliding door leaf (2) is closed, in the illustration of FIG. 7 the acceleration and deceleration device (20) together with the sliding door leaf (2) moves to the right relative to the stationary actuating element (11). The left operating element (11) pulls the left driving element (111) in the direction of the parking position (121). In this case, the energy store (32) is charged. In the position shown in FIG. 7, both entrainment elements (111, 131) are in the respective parking position (121, 141), and the left-hand actuation element (11) is free.

When closing the sliding door leaf (2) pulls the driving element (111) the left piston (61) to the left. in this connection Air flows from the gleusgleicϊisraum (102) under deformation of the sealing elements (71, 72) in the displacement chamber (101). As soon as the left driving element (111) is latched in its parking position (121), the displacement space (101) has reached its maximum volume. The two compensation chambers (102, 103) now have a minimal volume, cf. FIG. 11. The energy store (32) is stretched.

Upon further closing of the sliding door leaf (2), cf. Figure 8, the acceleration and deceleration device (20) approaches the right actuator (12). In a partial stroke of the sliding door leaf (2) adjacent to the end position of the sliding door leaf (2), the right-hand actuating element (12) contacts the right-hand entrainment element (131) and pushes it out of the parking position (141) in the direction of the parking position (141st) with the detent being released ) facing away from the end position (142). In this case, the movement of the sliding door leaf (2) by means of the delay device (41) is delayed. At the same time, the energy store (32) is discharged and pulls the sliding door leaf (2) into its end position, cf. Figures 2 and 9. There it stays standing jerk-free. In this position, the right driving element (131) is in the parking position (141) facing away from the end position (142), while the left driving element (111) in the parking position (121) is locked.

The entrainment element (131) pushes the piston (81) to the left during this closing movement by means of the piston rod (87). Even with a slight displacement of the piston (81), the air in the displacement chamber (101) is compressed. The sealing ring (92) is pressed radially outward against the cylinder inner wall (45) according to the principle of self-help. The initially undeformed sealing element (91) is likewise pressed against the cylinder inner wall (45). Both sealing elements (91, 92) seal the displacement chamber (101) quasi hermetically from the compensating space (103) delimited by the piston (81) and additionally delays the stroke movement of the piston (81) due to its friction on the cylinder inner wall (45). The sealing elements (71, 72) of the left piston (61) are pressed against the cylinder inner wall (45), but this piston (61) remains at rest. In the right compensation chamber (103), the pressure is reduced, whereby the delay is further increased.

For example, after passing the rear end of the groove in the cylinder inner wall (45), air flows from the displacement space (101) past the sealing elements (91, 92) into the equalizing space (103). Also, an overflow by another design of the cylinder inner wall (45) or in the region of the piston (81) is conceivable. The air pressure in the displacement chamber (101) collapses. The negative pressure in the compensation chamber (103) is canceled. As soon as the sealing elements (91, 92) have completely detached from the inner wall (45), additional air flows from the displacement chamber (101) into the compensation chamber (103). The pressure in the displacement space (101) falls e.g. abruptly. The two sealing elements (91, 92) resume their initial position before the start of the lifting movement. The sliding door leaf (2) now has a low residual speed.

During the retracting stroke movement of the piston (81), the tension spring (32) relaxes. The acceleration force of the tension spring (32) decreases along the piston stroke. The sliding door (2) now moves slowly and with only a small speed and a slight delay to its end position. There she stays without rebound. Due to the low force of the accelerator device (31) is given when closing the door and a secure anti-trap. In the closed end position of the sliding door leaf (2), cf. Figures 2 and 9, the displacement space (101) and the left equalization space (102) have a minimum volume while the right equalization space (103) has a maximum volume.

The opening of the sliding door leaf (2) takes place in the reverse order, cf. FIGS. 9-6. In this case, first the volume of the displacement space (101) is increased by pulling out the right piston rod (87). The tension spring (32) is tensioned. In the partial stroke adjacent to the open end position of the sliding door leaf (2), the left driving element (11) then contacts the left actuating element (111) and causes the left piston (61) to be pushed into the cylinder (43). Similar to the closing of the sliding door leaf (2), the volume of the displacement chamber (101) is reduced when the sliding door leaf (2) is opened and the volume of the compensation chamber (102) is increased. The tension spring (32) is relaxed. The sliding door leaf (2) now moves slowly and with only slight speed and little delay to its open end position. There it stays without rebound.

When closing and opening the sliding door leaf (2), for example, the strokes (123, 143) of the two entrainment elements (111, 131) are equal in magnitude. These strokes (123, 143) of the acceleration and deceleration device (20) in this embodiment are in each case 11% of the length of the sliding door leaf (2). However, the strokes (123, 143) may also be different.

It is also conceivable, for example, only half open the sliding door leaf (2) and then close again. In this case, the acceleration and deceleration device (20), which is moved during the opening from the representation FIG. 9 into the representation of FIG. 8, returns to the position shown in FIG moved back. The acceleration and deceleration device (20) functions as described above. The same applies if, from the open position, cf. 6, the sliding door leaf (2) is only half closed, cf. FIG. 7, to be opened again, cf. In any case, a maximum of one carrier element (111, 131) is in the end position (122, 142) facing away from the parking position. However, it is also possible for both entrainment elements (111, 131) to be in their respective parking position (121, 141).

The acceleration and deceleration device (20) with external parking positions (121, 141) can also be constructed such that a piston sealing in a stroke direction is arranged in the cylinder, which is connected to a driving element. The second carrier element is then arranged, for example, on the cylinder base of a cylinder which is longitudinally displaceable relative to the guide parts. At each deceleration, the piston and cylinder then move relative to each other. The piston seals when retracting into the cylinder. The parking positions and end positions of the driving elements correspond to the positions as shown in FIGS. 1-8. In such a device, the displacement chamber always lies between the piston and the cylinder bottom when the left actuating element engages and when the right actuating element engages. The compensation chamber is located when opening and closing the sliding door leaf between the piston and the cylinder head with the piston rod passage.

FIG. 12 shows a longitudinal section of, for example, a pneumatic acceleration and deceleration device (20) with two carrier elements (111, 131) whose parking positions (121, 141) lie in the cylinder-closest position. This device (20), for example, in a guide system (10) for Opening a sliding door leaf (2) are used, as shown for example in Figures 1-3. FIG. 13 shows a dimetric representation of this device (20).

In this embodiment, the acceleration and deceleration device (20) comprises only one piston (81) whose sealing elements (91, 92) point in the direction of the piston rod seal (52), cf. Figures 12 and 14. This piston rod seal (52) seals the cylinder interior (44) from the environment (1). The driving element (131) shown on the right in the representation of FIG. 12 is connected to the piston (81) by means of a piston rod (87). On the cylinder bottom (48), a rod (69) is arranged, which connects the cylinder (43) with the left arranged driving element (111). The cylinder (43) is longitudinally displaceable in the housing (28) of the acceleration and deceleration device (20), e.g. by means of the piston rod (87) and the piston (81) and / or by means of a bearing (26). The cylinder interior (44) can be cylindrical, conical, etc. be formed. In a conical configuration, the cross section of the cylinder bottom (48) to the cylinder head (49) increases towards.

The two entrainment elements (111, 131) have a similar structure to the entrainment elements (111, 131) described in connection with the first exemplary embodiment. They are connected by means of a tension spring (32). The tension spring (32) has a central section (33) of large cross-section and two outer sections (34) adjoining the latter and having, for example, half the cross-section of the first-mentioned section (33). These thin sections (34) are each guided over a deflection roller (25).

In the representation of FIGS. 12 and 13, the left entrainment element (111) is in the parking position (121) and the right-hand part receiving element (131) in the parking position (141) opposite end position (142) shown. Two through-holes (27) allow the attachment of the acceleration and deceleration device (20) on the sliding door leaf (2) or on an adapter component (15) arranged on the sliding door leaf (2).

FIG. 14 shows the area of the piston (81) of the acceleration and deceleration device (20). The piston (81) comprises e.g. a piston head part (82) made of a metallic material and a piston bottom part (82) arranged in the direction of the piston rod (87), e.g. glued piston head part (83). The piston rod (87) penetrates the piston head part (83) and is located in the piston head part (82) e.g. fastened in a thread. A first piston sealing element (91) is held with its clamping region (93) between the two piston parts (82, 83). This cup-shaped sealing element (91) protrudes with an inner collar (94) in a receiving area (85), without lying on the bottom. In this receiving area (85), another loose piston sealing element (92), e.g. a shaft seal (92) having an annular groove (95) facing the piston rod (87), e.g. contacted the cylinder inner wall (45). An abutment flange (86) secures the shaft seal (92) against falling out.

For example, FIGS. 15-18 show the various positions of the acceleration and deceleration device (20) when the sliding door is closed. In this exemplary embodiment, only one actuating element (11) is arranged in the guide channel (8), which in FIGS. 15-18 is fixed relative to the acceleration and deceleration device (20) moved from left to right, for example. The Türblattstub (9) is here, for example, 400 millimeters. For a larger door leaf Hub (9) can also be two actuators (11, 12) are used. The driving elements (111, 131) and / or the actuating elements (11, 12) are then arranged offset to one another in the normal direction to the plane of the drawing of FIGS. 15-18.

In the starting position shown in Figure 15, e.g. when the sliding door leaf (2) is open, the left driving element (111) is in the parking position (121). The right-hand driving element (131) is in engagement with the actuating element (11). It is in the parking position (141) arranged opposite end position (142), see. Also Figure 12. The piston (81) is extended and is in its right end position in the cylinder (43). The displacement chamber (101) is compressed and the compensation chamber (102) has its maximum volume. The energy store (32) is partially relaxed.

When closing the sliding door leaf (2) pushes the fixed actuator (11) the driving element (131) in the parking position (141). In the cylinder interior (44), air flows e.g. under deformation of the sealing elements (91, 92) via the piston (81) from the compensation chamber (102) in the displacement chamber (101). The piston (81) is retracted into the cylinder (43), cf. Figure 19. The tension spring (32) is tensioned. As soon as the carrier element (131) has reached the parking position (141), the device (20) releases from the actuating element (11), cf. FIG. 16.

The sliding door leaf (2) is now closed further until the left driving element (111) standing in the parking position (121) contacts the actuating element (11), cf. FIG. 17. The entrainment element (111) is pulled out of the parking position (121) in the direction of the end position (122) lying opposite the parking position (121). Here, the takeaway ment (111) by means of the rod (69) with the cylinder (43), cf. Figures 18 and 20. The cylinder (43) is pulled to the left relative to the detent of the right Mitnähmeelement (131) held piston (81). In this case, for example, it is guided by means of a plain bearing (26). In the cylinder interior (44) of the displacement chamber (101) is compressed. The sealing elements (91, 92) of the piston (81) are pressed against the cylinder inner wall (45) and retarded - supported by the negative pressure forming in the compensation chamber (102) - the relative movement of the cylinder (43) to the piston (81). The sliding door leaf (2) is delayed. For example, after passing through a longitudinal groove arranged in the inner wall of the cylinder (45), air flows from the displacement chamber (101) into the compensation chamber (102). The pressure in the displacement chamber (101) collapses. The sliding door leaf (2) moves slowly, pulled by the relaxing tension spring (32), in the closed end position. There it stays jerk-free.

The sliding door leaf (2) is opened in the reverse order. In FIGS. 18-15, the sliding door leaf (2) with the acceleration and deceleration device (20) is pulled from right to left. Here, first, the left driving element (111) in the parking position (121) is locked, see. Figure 17. It holds the cylinder (43) firmly. The tension spring (32) is tensioned. As soon as the right driving element (131) has reached the actuating element (11), cf. 16, it pulls the piston (81) by means of the piston rod (87) to the right. The displacement space (101) is compressed. The sealing elements (91, 92) are applied to the cylinder inner wall (45) and delay the movement of the sliding door leaf (2). At the same time pulls the tension spring (32) under relief the sliding door leaf (2) in its open end position, see. FIGS. 12 and 15. Figures 21 and 22 show an acceleration and deceleration device (20) with a hydraulic delay device (41) in a section and in a dimetric representation. The device (20) shown here has a cylinder (43) with two pistons (61, 81) arranged therein, which are each connected by means of a piston rod (67, 87) to a carrier element (111, 131). The displacement chamber (101) arranged between the pistons (61, 81) is connected to the two compensation chambers (102, 103) via throttle bores (76, 96) arranged in the pistons (61, 81), cf. The latter are each limited by means of a seal supported by a spring-loaded plate (53; The throttle channels (76, 96) are closed when retracting a piston (61, 81) by means of a respective valve (77, 97). When the individual piston (61, 81) is extended, the valve (77, 97) is opened.

The acceleration and deceleration device (20) comprises a support frame (22) to which in this embodiment the cylinder (43) is attached. The entrainment elements (111, 131) are guided by means of the support frame (22), wherein the parking position (121, 141) is the farthest from the cylinder (43) position of the respective entrainment element (111, 131). The two driving elements (111, 131) engage around the supporting frame (22) and are interconnected by means of a tension spring (32). In this embodiment, with a sliding door leaf length of 600 millimeters, the sum of the piston strokes is 15% of the sliding door leaf length.

The operations during opening and closing are analogous to those described in connection with FIGS. 5-9 for a pneumatic device (20). For example, in a hydraulic device (20) the deceleration is speed proportional. That means at a high speed the sliding door leaf (2) this experiences a high delay. However, if the sliding door panel (2) is opened or closed at low speed, this movement will be only slightly delayed.

The described acceleration and deceleration devices (20) can also be arranged on the stationary part of the guide device (10). The one or more actuators (11, 12) then sit on the moving part.

Combinations of the described embodiments are conceivable.

List of reference numbers:

1 environment

2 sliding door leaf 3 door frame

4 door opening

5 vertical Rahrαenteil

6 door leaf receiver

8 guide channel

9 door leaf lift

10 guidance system

11 guide part, fixed; left operating element; bolt

12 guide part, fixed; right actuator; bolt

13 fasteners

14 guide part, movable; second guide part 15 adapter, adapter component

16 group of leadership roles

17 guide rollers

20 acceleration and deceleration device, device

21 cylinder tube

22 supporting frame

25 pulleys 26 storage

27 through hole

28 housing

31 accelerator 32 energy storage, compression spring

33 central section of (32)

34 outer sections of (32)

41 delay device

42 cylinder-piston unit

43 cylinders

44 cylinder interior

45 cylinder inner wall 46 front side

47 front side

48 cylinder bottom

49 cylinder head

51 piston rod seal

52 piston rod seal

53 spring-loaded plate

54 spring-loaded plate

61 pistons

62 piston head part

63 piston head part

64 free space

65 Mounting area 66 Mounting flange

67 piston rod

68 piston rod end

69 pole

71 Piston sealing element, sealing element

72 piston sealing element, shaft sealing ring

73 Clamping area 74 inner collar

75 ring groove 76 throttle holes

77 valve

81 pistons

82 piston bottom part

83 piston head part

84 free space

85 recording area

86 abutment flange

87 piston rod

88 piston rod end

91 Piston sealing element, sealing element

92 Piston sealing element, shaft seal

93 clamping area

94 inner waistband

95 ring groove

96 throttle holes

97 Valve 01 Displacement space 02 Compensation space 03 Compensation space 11 Driving element 12 Mounting recess 13 Driving surfaces 14 Driving surfaces 15 Free surface 21 Parking position 22 End position, facing away from (121) 23 Stroke of (111) 131 driving element

132 Absorption

133 driving planes

134 driving surface

135 open space

141 parking position

142 end position, facing away from (14

143 stroke of (131)

151 frame part

152 leadership part

153 Leadership1

154 long holes

155 curved area of (154)

156 bevel

157 depression

161 frame part

162 leadership part

163 leadership part

164 long holes

165 curved area of (164)

166 bevel

167 depression

Claims

claims:

1. Acceleration and deceleration device (20), which has at least one energy store (32) and at least one piston (61, 81) guided in a cylinder (43) by means of a carrier element (111; 131), characterized in that it has a second Which comprises either a further piston (81, 61) separated from said piston (61, 81) in the cylinder (43) or which guides the cylinder (43) relative to the first-mentioned piston (61, 81) ,

Second acceleration and deceleration device (20) according to claim 1, characterized in that the sum of the strokes of the entrainment elements (111, 131) is greater than the length of the Zy- linderinnenraums (44).

3. acceleration and deceleration device (20) according to claim 1, characterized in that each piston (61, 81) depending on its stroke direction relative to the cylinder (43) a displacement chamber (101) of a compensation chamber (102, 103) separates.

4. acceleration and deceleration device (20) according to claim 1, characterized in that the two pistons (61, 81) define a common displacement space (101).

5. Acceleration and deceleration device (20) according to claim 1, characterized in that it comprises a single energy store (32) which is connected to both Mitnähmeelemen- th (111, 131).

An acceleration and deceleration device (20) according to claim 1, characterized in that it comprises a hydraulic deceleration device (41).

7. Sliding door arrangement with a sliding door leaf (2) and with an acceleration and deceleration device (20) according to claim 1.

8. Sliding door assembly according to claim I _1, characterized in that the length of the sliding door leaf (2) is less than or equal to 600 millimeters.

9. Sliding door arrangement according to claim 7, characterized in that the sum of the strokes (123, 143) of the driving elements (111, 131) is greater than 15% of the length of the sliding door leaf (2).