WO2013079557A1

WO2013079557A1 - Pull out guide

Info

Publication number: WO2013079557A1
Application number: PCT/EP2012/073877
Authority: WO
Inventors: Steffen Jaekel; Dirk Blome; Tim Hornig; Sebastian König
Original assignee: Paul Hettich Gmbh & Co. Kg
Priority date: 2011-11-28
Filing date: 2012-11-28
Publication date: 2013-06-06
Also published as: DE102012111551A1; DE102012111551B4

Abstract

A pull out guide (6) having a fixable guide rail (7) and a movably mounted slide rail (10), to which a thrust element (1) can be fixed, wherein the slide rail (10) can be moved from a closed position into a maximum open position, and a cushioning arrangement (11) is provided, which brakes the slide rail (10) before the maximum open position is reached, wherein the cushioning arrangement (11, 11', 11'') comprises a linear pressure cushion (20). The cushioning arrangement (11, 11', 11'') can therefore be compactly structured and absorb high impact loads.

Description

pull-out guide

The present invention relates to a pullout guide with a fixable guide rail and a movably mounted running rail on which a

Pusher is fixable, wherein the running rail is movable from a closed position to a maximum open position and a damping device is provided which decelerates the running rail before reaching the maximum opening position, wherein the damping device comprises a linear pressure damper.

AT 006 775 discloses a pull-out guide set for drawers in which a carriage with rollers or rolling elements is arranged between the rails. The carriage is provided with a damper which cooperates with stops arranged on the rails to effect a damping before reaching an end position. However, the arrangement of the carriage between the rails with the damper is difficult to install due to the limited space. In addition, the frictional forces between the rollers or rolling elements and the rail affect the damping forces.

WO 2008/139298 discloses a pullout guide in which the opening movement of a running rail is damped before reaching a maximum opening position. For this purpose, a linear damper is provided, which has a piston rod, which is loaded in the damping case to train and can be pulled out of a cylindrical housing. The piston rod is biased in the pushed-out position and coupled with a driver which is connectable to a fixed rail on the web. The carrier is then moved along a guideway via the web, wherein the driver simultaneously pulls out the piston from the damper housing and thereby causes a damping and brakes the opening movement of the running rail. This damping device has the disadvantage that it is constructed comparatively complicated and requires numerous components. In addition, higher impact loads can occur, which can cause damage to the filigree components, for example the piston rod or the connections between piston rod and driver. Due to the many components comparatively much space is needed.

It is therefore an object of the present invention to provide a pullout guide in which a damping device for braking the opening movement of the track compact with only a few components is formed and also high damping forces can be absorbed.

This object is achieved with a drawer slide with the features of claim 1.

According to the invention, the damping device comprises a linear pressure damper. This pressure damper is preferably designed such that the piston rod automatically moves under the action of a compression spring in the outer position. This reduces the requirement for the interface to the activator. In addition, the damping device can be simple, since fewer connecting elements are needed as in a damper. In the case of the pressure damper, the piston rod is subjected to pressure during loading, ie during damping, so that high damping forces can also be transmitted.

According to a preferred embodiment, the pressure damper comprises a damper housing and a piston rod which can be inserted into the damper housing, wherein the piston rod is pretensioned in the extension direction by the force of a spring. Thereby, the pressure damper can be installed so that it is arranged between two contact surfaces and then compressed for a damping function. It is not necessary to connect the damper housing and / or the piston rod via connecting elements with other components.

Preferably, the pressure damper is mounted on a housing, on which a parallel to the running rail movable driver is guided. The driver may for example be guided linearly on the housing in a channel, so that a stable guidance is ensured. In this case, the driver can have at a first end a projection which can be brought into engagement with an activator fixed to the running rail or the push element. Further, the driver may have at an opposite second end an adapter which bears with a contact surface on the pressure damper. The adapter and / or the projection may be integrally formed or fixed to the driver as separate components. The driver is thereby moved over the activator and then acts directly on the pressure damper, so that only a few components are needed. In addition, the damping device can be made compact, as on the housing a channel for guiding the driver and an adjacently arranged receptacle for the pressure damper are formed.

For effective damping of the opening movement of the pressure damper may be filled with a medium, for example with a gas or a fluid, in particular with air or a silicone oil.

Preferably, the activator is attached to the pusher or the track rail. Alternatively, the activator can also be attached to the guide rail or on the body. The housing with the pressure damper is preferably fixed to the guide rail or on the body. Alternatively, the housing may be fixed to the pressure rail on the running rail or the push element. As a result, the movable mass is reduced to a minimum, since only the activator is fixed to the movable thrust element or the running rail.

In a further embodiment, the pressure damper can be controlled via a deflector designed as a rotatably mounted lever. In this case, the activator interacts with a contact element at one end of the lever. The pressure damper is actuated by the lever. Thus, the thrust element is damped when reaching, for example, the open end position.

In a further embodiment, the damping device has a spring which biases a driver and the running rail into a maximum opening position. Characterized the thrust element is held with a certain spring force in the maximum opening position, so that accidental movement in the closing direction is avoided. The force of the spring can be adapted to the particular application and the mass of the thrust element. Preferably, the damping device has a housing with a guideway, along which a driver coupled to the linear pressure damper is guided. The driver can have a receptacle into which engages an activator for the damping device. The activator may be web-shaped and engage in a U-shaped receptacle, so that forces in the opening and closing direction between the activator and driver can be transmitted. The guideway may further comprise an angled end portion on which the driver is pivoted and then releases the activator. As a result, the driver can be locked on the angled end section until the push element returns to the angled end section. ximale opening position to be moved. The damping device is constructed such that it can be installed as a common part on the right or left side of the movable furniture part, for example on a push element.

In the case of the pull-out guide according to the invention, either the housing of the damping device can be fixed with the damper on the push element or on a furniture carcass. Alternatively, the housing of the damping device can also be fixed to the guide rail, wherein the activator is arranged in the latter two cases on the thrust element or on the running rail. The determination of a pusher has the advantage that a pre-assembly of the thrust element with the pull-out guide according to the invention is possible. In order to enable a compact design and to achieve the maximum Auszugsweg in the opening direction, a deflection of the force is provided on the damper. This deflection can be done for example by a Z-shaped element consisting of adapter and driver or a rotatably mounted lever.

It is possible to use the damping devices according to the invention optionally when reaching the open and when reaching the closed end position of a movable furniture part, depending on the installation position of the damping device on the movable furniture part, for example on the push element.

The invention will be explained in more detail below with reference to an embodiment with reference to the accompanying drawings. 1 A and 1 B are two perspective views of a drawer according to the invention with pullout guide in the assembled state;

Figures 2A and 2B show two detail views of the damping device on the

Pullout guide of Figure 1 in different positions;

FIGS. 3A and 3B show two perspective views of the damping device without pull-out guide, FIG. 4 shows a perspective exploded view of the damping device of FIG. 3 and FIGS. 5A to 5C show three sectional views of the damping device of FIG

FIG. 3;

Figures 6A and 6B are two perspective views of a piece of furniture with a

Pull-out guide according to the invention;

Figure 7 is a perspective view of a pushing element with a further embodiment of a pull-out guide according to the invention;

Figure 8 is a perspective view of the pusher of the

FIG. 7 in a closed position;

Figure 9 is a view of the damping device of Figure 8 in an open position;

Figure 10 is an exploded perspective view of the damping device of Figure 9;

Figure 1 1 is an exploded perspective view of another embodiment of a damping device;

Figures 12A to 14B show several views of the damping device of the figure

1 1 in different positions.

A push element 1 is designed as a drawer and movably mounted with a furniture body or a household appliance. The push element 1 summarizes on opposite sides frames 3 and 4, which are connected to one another via a rear wall 5. In each side frame 3 and 4, a pull-out guide 6 is arranged in each case, which is shown on one side in an open position, ie extended position, and on the opposite side in a closed position, ie a contracted position. Each pullout guide 6 comprises a guide rail 7 which can be fixed via one or more holders 8 to a furniture carcass or a domestic appliance. On the guide rail 7, a center rail 9 is movably mounted, on which a running rail 10 is held movable. Between the guide rail 7, the middle rail 9 and the running rail 10 rolling elements or rollers may be provided. The frame 3, 4 is connected via holders 25 to the bottom 2 of the pusher element 1. The running rail 10 is connected via a latching connection with the frame 3, 4 of the push element 1. To decelerate the push element 1 before reaching the maximum opening position, a damping device 1 1 is provided. The maximum opening position is predetermined by stops which are formed, for example, on the running rail 10 and the guide rail 7 or the middle rail 9.

The damping device 1 1 is shown in Figures 2A and 2B in detail. Each damping device 1 1 comprises a housing 12, on or in which a pressure damper 20 is mounted. The pressure damper 20 can be actuated via an activator 13, which is designed as a projection 15 and is connected via a plate 14 to the frame 3, 4 of the push element. The activator 13 strikes shortly before reaching the maximum opening position on a projection 15 which is formed on a driver 18. The driver 18 in turn moves an adapter 16 which acts on the pressure damper 20. In Figure 2A, the damping device 1 1 is shown in the maximum open position, while in Figure 2B, the position is shown when the activator 13 strikes the projection 15 and the pressure damper 20 has not yet been operated. As a result, a gap is formed between the adapter 16 and the housing 12.

In Figures 3A and 3B and Figure 4, the damping device 1 1 is shown in detail. The fixable on the guide rail 7 housing 12 includes a channel 23 into which a rod-shaped portion of a driver 18 can be inserted. The driver 18 has on one side an integrally formed vertically protruding projection 17 which is engageable with the activator 13. On the opposite side of the rod-shaped carrier 18 is inserted into a receptacle 19 of the adapter 16 and fixed there. The adapter 16 protrudes laterally beyond the rod-shaped portion of the driver 18 on one side and has a contact surface 24 which bears against an end face of a cylindrical damper housing 21. In the damper housing 21, a piston rod 22 is inserted. The collective 22 is biased by a spring arranged in the damper housing 21 in the extension direction.

As shown in FIGS 5A to 5C, located in the housing 12 adjacent to the closed channel 23 for the linear guide of the driver 18, a receptacle 26 for the pressure damper 20, wherein on the receptacle 26, a stop 27 is provided, on which the piston rod 22nd abuts the front side. In addition, the damper housing 21 is guided linearly in the receptacle 26. If the running rail 10 now moves to the maximum opening position, the activator 13 acts on the projection 17 and thereby the driver 18 acts via the adapter 16 on the pressure damper 20, which is compressed by the opening movement of the running rail 10. As a result, the opening movement of the running rail 10 is decelerated. In the maximum opening position, the pusher 1 can remain until the user closes it again and then the spring force in the

Pressure damper 20 is sufficient to push out the damper housing 21 again by the force of the spring out of the housing 12. The pressure damper 20 may be formed as a fluid damper, in particular with silicone oil, and be loosely inserted into the housing 12. The housing 12, the driver 18 and the adapter 16 may be manufactured as plastic parts, with other materials can be used to transfer large loads.

In the illustrated embodiment, the housing 12 is arranged on the fixed guide rail 7. Of course, it is also possible to fix the housing 12 on the movable running rail 10 or the pushing element 1 and the activator on the guide rail 7.

FIGS. 6A and 6B show a piece of furniture 30 which has a furniture carcass 31 on which a push element 1 according to the invention is movably mounted. Under the pusher element 1, two further pushers 32 are provided, which may also have a pull-out guide according to the invention. The push element 1 is designed as a drawer and has a bottom 2 and two side frames 3 and 4, in each of which a pullout guide 6 is arranged. In Figure 7, a modified damping device 1 1 'is mounted on a bottom 2 of a drawer, which is otherwise formed as in the previous embodiment. The damping device 1 1 'comprises two cuboid housings, each having a movably mounted driver 62 and are arranged opposite one another adjacent to carcass walls on a floor. In the case of wide push elements, the use of two damping devices 1 1 'is preferred, but it is also possible to provide only one damping device 11' or more than two damping devices 1 1 "on a push element Right and left side of the movable furniture part, for example, the push element 1 can be installed., Therefore, on one side of a housing part 60 and on the other side, a housing part 61 visible.

In Figure 8, the thrust element 1 shown in Figure 7 is shown in a arranged in a furniture body 31 position. On the furniture body 31, a web-shaped activator 40 is fixed, which can come into engagement with the driver 62 when the drawer is arranged shortly before reaching the maximum opening posi- tion. A portion 41 serves to fix the activator 40 to the holder 8. The activator 40 may also be integral with the holder 8.

FIG. 9 shows the maximum opening position of the drawer, in which the activator 40 is arranged in engagement with a receptacle 63 of the carrier 62. The holder 8 has an opening 33.

In Figure 10, the damping device 1 1 'is shown in detail, which has a first housing part 60 and a second housing part 61. On the housing part 60 of the driver 62 is slidably mounted, wherein on the driver 62 a U-shaped receptacle 63 is provided with a side wall 64 which comes into contact with the activator 40. The driver 62 is mounted on a rotatable lever 65, wherein in the lever 65, a first slot 66 is recessed in which a pin 67 of the driver 62 is slidably mounted. This allows the lever 65 to rotate about an axis 76, while the pin 67 is guided in the slot 66 and thereby the driver 62 is displaced substantially linearly along a guide track 68.

The axis 76 is disposed in a central region of the lever 65, wherein on the opposite side to the driver 62 also a slot 69th is recessed in the lever and a pin 70 of a coupling element is guided in the slot 69. The coupling element provides a connection with a piston rod 71 of a pressure damper 75, so that no transverse forces act on the piston rod 71. The pressure damper 75 comprises a damper housing 72, which is fixed between two projections 73 and 74 on the housing part 60.

During a closing movement of the driver 62 is moved via the activator 40 from a central region of the housing part 60 to the outside, so that the lever 65 rotates counterclockwise in Figure 14. As a result, the piston rod 71 of the pressure damper 75 is retracted into the damper housing 42 and the movement of the running rail is slowed down. Thus, the drawer moves into the maximum opening position, a spring 78 is further provided, which is only partially shown, which is fixed at one end to a projection 77 on the housing part 60 and on the opposite side of the driver 62, so that in the maximum opening position is biased. On the housing part 60, a deflecting element 80 is provided in the form of a deflection roller, by means of which the spring 78 is deflected substantially by 180 ° from the projection 77 to the driver 62 and thus can be made particularly long. The lever 65 comes in its final position on a stop 79 to the plant. The deflecting element 80 is mounted on a pin 91.

The damping device 1 1 'comprises a spring 78 to bias the thrust element 1 in the maximum opening position. Of course, it is also possible to dispense with such a spring, since the pressure damper is forcibly guided via the coupling with a driver 62, so that during a closing movement of the pressure damper from the contracted position is moved to the extended position. At the end of the extension movement of the pressure damper, a mechanical decoupling from the driver 18 or 62 "and the activator 40 can also take place mechanically. The use of a spring 78 has the advantage that a slight latching takes place in the maximum opening position of the drawer, which can simplify the handling.

1 1 shows a damping device 1 1 "modified in accordance with FIG. 10 which, like the damping device 11 ', can be mounted on the bottom 2 of a drawer or other push element 1. The same components with respect to the damping device 11' are the same Reference numeral. The damping device 1 1 "comprises a first housing part 60 and a second housing part 61, between which a damping mechanism is arranged, on the housing part 60 a damper housing 72 of a pressure damper 75 is fixed between two projections 73 and 74, which housing has a relative to the damper housing 72 has a movable piston rod 71. The piston rod 71 is connected to a slide 85 which has on opposite sides in each case a groove 84 which receives an edge portion of a linear guide track 83. On the slide 85 a pin 70 is formed, which is formed into a guide element 81 engages which is slidably mounted on a rotatable lever 65. For this purpose, a slot 69 is formed in the lever 65, in which also the

Pin 70 engages. On the lever 65, a sleeve 90 is formed which is mounted on the axis of rotation 76 ".

The rotatable lever 65 also has a second elongated hole 66 on the opposite side from the axis of rotation 76 ", on which a further slider 82 is mounted so as to be longitudinally displaceable The slider 82 is coupled to a driver 62" which engages with a pin 67 Opening of the slider 82 engages. The driver 62 "has no U-shaped receptacle, but only a projection 63", which can come into contact with a stop element, for example, a stationary arranged on a furniture body stop to dampen a pull-out movement of a sliding element push. Alternatively, the cam 62 "may also interact with an activator 40. The cam 62" is guided along a slot-shaped guide track 68 on the housing 60.

On the housing 60, a cup-shaped receptacle 87 is further formed, on which a concentrically arranged opening 88 is provided. In the receptacle 87, a disc 86 can be inserted, which is rotatably mounted with an axis in the opening 88. An axis of rotation 76 "is eccentrically mounted on the disk 86, which can be inserted into a sleeve 90 on the rotatable lever 65 to form a rotation axis, adjusted by the eccentric arrangement of the axis of rotation 76" of the rotatable lever 65, so that the lever ratios are also changed become.

12, damping device 11 '' is shown in a home position prior to a damping operation, and when a stopper contacts with projection 63 '' of follower 62, it becomes along guideway 68 shifted linearly. In this case, the slide 82 along the slot 66 to the rotation axis 76 "to be moved, since by rotation of the lever 65, the distance between the rotation axis 76" and the linear guide track 68 and the driver 62 "is shortened.

The lever 65 presses in a counterclockwise rotation, the pin 70 on the slider 81 against the piston rod 71 of the pressure damper 75, which is retracted into the damper housing 72. The slider 81 can be moved in the direction of the axis of rotation 76 ".

In FIGS. 13A and 13B, a middle position is shown in which the rotatable lever 65 is oriented substantially at a right angle to the guideways 68 and 83. The piston rod 71 is halfway into the damper housing 72 retracted and the opening movement is now further braked until the position shown in Figures 14A and 14B is reached. In this position, the pressure damper 75 is substantially in the retracted position, wherein, alternatively, a stop on the guide track 63 limits a rotational movement of the lever 65. Now, if the pusher 1 again moved in the closing direction, a spring disposed in the damper housing 72 can push out the piston rod 71 and thereby pivot the rotatable lever 65 about the axis 76 in a clockwise direction until the starting position shown in Figure 12A and 12B is reached again.

The damping forces of the pressure damper 75 can be adjusted by rotating the disc 86 in the opening 88 on the housing part 60. Then, the axis of rotation 76 is selectively moved closer to the guide track 68 or to the guide track 83, so that, accordingly, the damping forces can be increased or decreased. LIST OF REFERENCE NUMBERS

1 push element

2 floor

3 side frame

4 side frame

5 rear wall

6 pullout guide

7 guide rail

8 holders

9 middle rail

10 track rail

1 1, 1 1 ', 1 1 "Dämpfungseinnchtung

12 housing

13 activator

14 plate

15 advantage

16 adapters

17 lead

18 drivers

19 recording

20 pressure damper

21 damper housing

22 piston rod

23 channel

24 contact area

25 holders

26 recording

27 stop

30 furniture

31 furniture carcass

32 push element

33 opening

40 activator

41 section

60 housing part

61 housing part

62, 62 "driver

63 intake / guideway " Head Start

Side wall

lever

Long hole

spigot

guideway

Long hole

spigot

piston rod

damper housing

head Start

shock absorbers

Axis "rotation axis

head Start

feather

attack

deflecting

guide element

pusher

guideway

groove

pusher

disc

admission

opening

shell

spigot

Claims

claims

1 . Pull-out guide (6) with a fixable guide rail (7) and a movably mounted running rail (10) on which a push element (1) can be fixed, wherein the running rail (10) is movable from a closed position to a maximum open position and a damping device (1 1, 1 1 ', 1 1 ") is provided, which brakes the running rail (10) before reaching the maximum opening position, characterized in that the damping device (1 1, 1 1 ^* 1 1") a linear pressure damper (20, 75 ).

2. pullout guide according to claim 1, characterized in that the

Pressure damper (20, 75) comprises a damper housing (21, 72) and a piston rod (22, 71) insertable into the damper housing, wherein the piston rod (22, 71) is biased in the extension direction by the force of a spring.

3. pullout guide according to claim 1 or 2, characterized

in that the pressure damper (20, 75) is mounted on a housing (12) on which a driver (18) which is movable parallel to the running rail (10) is guided.

4. pullout guide according to claim 3, characterized in that the

Carrier (18) in a channel (23) linearly guided on the housing (12).

5. pullout guide according to claim 3 or 4, characterized in that the driver (18) at a first end a projection (13) which engages in engagement with a on the running rail (10) or the push element (1) fixed activator (13 ) can be brought.

6. pullout guide according to one of claims 3 to 5, characterized in that the driver (18) at a second end an adapter (16) which rests with a contact surface on the pressure damper (20).

7. pullout guide according to one of the preceding claims, characterized in that a deflection for controlling the pressure damper (20) is provided

8. pullout guide according to claim 6, characterized in that the deflection is designed as a linearly guided Z-shaped element consisting of adapter (16) and driver (18).

9. pullout guide according to claim 6, characterized in that the deflection is designed as a rotatably mounted lever (65) which is coupled on one side with the driver (62) and on the opposite side with the pressure damper (75)

10. pullout guide according to one of the preceding claims, characterized in that the housing (12) forms a channel (23) for guiding the driver (18) and an adjacently arranged receptacle for the pressure damper (20).

1 1 .Auszugsführung according to any one of the preceding claims, characterized in that the pressure damper (20) is filled with a medium, in particular gas or a fluid.

12. pullout guide according to one of the preceding claims, characterized in that the activator (13) on the thrust element (1) or the running rail (10) and the housing (12) with the pressure damper (20) on the guide rail (7) is fixed ,

13. pullout guide according to one of the preceding claims, characterized in that the damping device (1 1 ') has a spring (78) which biases a driver (62) and the running rail (10) in the maximum opening position.

14. pullout guide according to one of the preceding claims, characterized in that the damping device (1 1 ', 1 1 ") has a housing (60, 61) with a guide track (68) along which a with the linear pressure damper (75) coupled Driver (62, 62 ") is guided.

15. pullout guide according to one of the preceding claims, characterized in that a housing (60, 61) of the damping device (1 1 ', 1 1 ") with the pressure damper (75) on the thrust element (1) or the running rail (10) is fixed ,

16. furniture (30), characterized in that at least one pullout guide is provided according to one of the preceding claims.