EP3429430A1

EP3429430A1 - Self-closing device and drawer runner

Info

Publication number: EP3429430A1
Application number: EP17709977.7A
Authority: EP
Inventors: Forest PAN; Bode ZENG; Femmy WANG; Roy Chen; Kai-Uwe Rüde
Original assignee: Paul Hettich GmbH and Co KG
Current assignee: Paul Hettich GmbH and Co KG
Priority date: 2016-03-16
Filing date: 2017-03-10
Publication date: 2019-01-23
Anticipated expiration: 2037-03-10
Also published as: WO2017157796A1; US20190069672A1; EP3429430B1; US10512328B2; ES2785630T3; PL3429430T3

Abstract

The invention relates to a self-closing device (5), in particular for drawer runners (1), comprising a housing (6), in which a guide (61) is provided for a linearly moveable slider (7) and a guide path (63) is provided for a catch (11) connected to the slider (7), wherein the catch (11) can be coupled to an activator (10) and a damper (8) having a damper housing (80) and a piston rod (81) is provided between the housing (6) and the slider (7), wherein a spring (9) is arranged around the damper (8), by means of which the slider (7) is pretensioned on the housing (6) in a closing position. The invention also relates to a drawer runner (1) having a self-closing device (5).

Description

Self-closing and pull-out guide

The present invention relates to a self-closing, in particular for drawer guides, with a housing in which a guide for a linearly movable slide and a guide track for a slider connected to the driver is provided, the driver can be coupled with an activator and between the housing and the slide a damper with a damper housing and a piston rod is provided, and a pullout guide with a stationary guide rail and a relative to the guide rail movable track rail.

No. 6,971,729 B1 discloses a self-closing device in which a driver can be moved along a housing. The driver can be coupled to an activator of a rail of a pullout guide. The driver is biased by a spring in a retraction position, which is guided along a pin on the housing. This self-retraction has the disadvantage that no damping forces can be applied to decelerate the closing movement of a rail.

Furthermore, DE 20 201 1 109 548 U1 discloses a device for closing a movable furniture part, in which a driver along a housing is movable. The driver is coupled to a linear damper having a damper housing, in which a spring is additionally arranged in order to bias the driver in a feed direction. However, the arranged in the damper housing spring can provide only small forces and can not be replaced if damaged, without having to completely dismantle the damper.

It is therefore an object of the present invention to provide a self-closing and a drawer slide with such a self-closing, which is simple and compact and provides sufficient forces to bias the driver.

This object is achieved with a self-feeder with the features of claim 1. Further, according to the invention, a pullout guide is provided with such a self-closing, as defined in claim 8. In the self-closing invention, a slide is movably mounted on a housing, which is biased by a spring in the feed direction, wherein additionally a damper with a damper housing and a piston rod is provided to decelerate a relative movement between the slide and the housing, wherein the spring to the damper is arranged. This results in a particularly compact design, since the damper is surrounded by the spring and the space is used within the spring. In addition, the spring can be easily replaced in case of damage and apply sufficient spring forces in order to pre-tension the slider in the feed direction.

Preferably, the spring is designed as a spiral spring, which is arranged around the damper housing. The damper housing can either serve to guide the coil spring or be arranged without contact within the coil spring.

In one embodiment, the spring is designed as a tension spring, which is relaxed in the retracted position. As a result, the spring occupies only a small space in a relaxed retraction position. In addition, guidance means can largely be dispensed with in the case of a tension spring since, unlike with a compression spring, lateral breaking off does not take place.

The spring may be fixed at a first end to a first holder on the housing and at a second end to a second holder on the slider. In this case, at least one in the radial direction at least partially projecting winding may be provided on the spring at the first end and / or at the second end in each case, so that the spring can be easily mounted. The windings at the end, which protrude radially, can be inserted into a pocket or receptacle so that the spring can be easily mounted.

The damper may be held with a damper housing in a receptacle of the housing, wherein the slider is movable together with the piston rod. Of course, it is also possible to move the slider together with the damper housing and fix the piston rod to the housing. The damper can be designed as a linear damper, in particular as a fluid damper, in order to be able to provide high damping forces. In order to be able to couple the self-closing device in a simple manner with a movable component, such as a pull-out guide or a sliding door, the catch is preferably pivotably mounted on the slider. The driver can be moved along the guideway on the housing to lock the spring in a cocked position, for example, when a drawer or a sliding door is moved to an open position.

When self-closing is applied to a fixed component, such as a attached to a furniture carcass, can be connected to an activator for coupling with an activator, which on the moving component, such. a sliding door is attached. Conversely, of course, the self-closing on the movable member and the activator can be attached to the fixed component.

The pull-out guide according to the invention has a stationary guide rail and a running rail movable relative to the guide rail, wherein the self-closing mechanism is provided between the running rail and the guide rail. In this case, the self-retraction can be arranged in the retracted position of the drawer guide between the running rail and the guide rail, so that the self-closing mechanism is protected from environmental influences or contamination. The guide rail and the running rail can be C-shaped in cross section, with the C-shaped legs of the running rail and the guide rail facing each other. This results in a cavity between the rails, in which the self-closing is arranged.

For activating the self-closing an activator can be arranged on the running rail or on a coupled to the running rail thrust element, which can be coupled to the driver of the self-closing. Preferably, a middle rail is arranged between the guide rail and the running rail, which is shorter than the running rail or the guide rail, being arranged in extension of the center rail of the self-closing. As a result, the space within the drawer slide can be optimally used.

The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it: Figure 1 is a perspective view of a pullout guide according to the invention;

Figure 2 is a plan view of the pullout guide of Figure 1; Figure 3 is an exploded perspective view of the pullout guide of Figure 1;

Figure 4 is an exploded perspective view of the self-closing of the pullout guide of Figure 1;

FIGS. 5A to 5D show several views of the self-closing mechanism in an extended position; Figures 6A to 6D are several views of the self-retraction of Figure 5 in the retracted position. Figures 7A to 7C show several views of the slider with the spring of the

Selbsteinzuges of Figure 4; Figure 8 is a perspective view of the housing of the self-closing mechanism with damper; Figure 9 is a perspective view of the housing with spring mounted;

Figures 10A to 10D show several views of the driver of the self-closing of Figure 4;

Figures 1 1 A to 1 1 D several views of the activator for self-closing; Figure 12 is an exploded perspective view of a modified embodiment of a Selbsteinzuges invention;

Figs. 13A and 13B are two views of a self retractor for the drawer slide of Fig. 12; Figs. 14A and 14B are two views of the driver of the self-retraction of Fig. 13;

Figure 15 is a perspective view of a pullout guide with modified activator;

Figure 1 6 is a detailed perspective view of the running rail of

Pullout guide of Figure 15;

Figures 17A and 17B are two views of the driver of the self-closing of

Figure 15, and

Figures 18A and 18B are two views of a modified driver.

A pullout guide 1 comprises a fixable on a furniture body stationary guide rail 2, a middle rail 3 and a running rail 4. The center rail 3 is disposed between the guide rail 2 and the running rail 4 and shorter than this formed. In extension of the center rail 3, a self-closing 5 is provided, which is fixed with a housing 6 on the guide rail 2. The self-closing 5 has a movable slide 7, which is connected to a driver 11. The slider 7 is biased by a spring 9 in a retraction position and further coupled to a damper 8 to brake during a closing movement of the running rail 4 before reaching the closed position to avoid loud impact noises.

As shown in Figure 3, the guide rail 2, the middle rail 3 and the running rail 4 in cross-section C- or U-shaped. The guide rail 2 has a bottom 20 from which protrude two legs 21 on which raceways for rolling elements 12 are formed. The spherical rolling elements 12 are held on a roller body cage 13 to store within the guide rail 2 which is also U-shaped center rail 3 movable. At the bottom 20 of the guide rail 2, a web 22 is also frontally formed, as well as a protruding tab 23 and a holder 24, by means of which the housing 6 of the self-closing 5 can be determined. The holder 24 is used for lateral fixation of the housing 6, while the protruding tab 23 is engaged by a web 62 on the housing 6 and the tab 23 prevents displacement of the housing 6. Other fastening mechanisms for fixing the housing 6 can be provided.

On the middle rail 3 also raceways for rolling elements 1 2 are ausgebil det, which are provided on the inside of the angled webs. The rolling elements 12 within the middle rail 3 are held on a Wälzkörperkäfig 14, within which the running rail 4 is arranged. The running rail 4 comprises at a longitudinal end an angled web 41 as a stop, and parallel to the longitudinal direction webs 42, on which raceways for the Wälzkör- by 1 2 are formed. The webs 42 of the running rail 4 are facing the webs on the middle rail 3 and the guide rail 2, so that within the webs 42 and a bottom 40 of the running rail 4 and a bottom 20 of the guide rail 2, a chamber is formed in the one hand, the shortened center rail 3 and on the other hand, the self-closing 5 are arranged.

At the bottom 40 of the track 4, a slot 43 and an opening 44 are provided, which serve to attach an activator 1 0. The activator 10 has an elongate projection 15 which can be inserted into the elongated hole 43, and furthermore a fastening means 19 can be inserted into an opening 16 on the actuator 10 and the opening 44 on the running rail 4. The activator 1 0 can be brought into engagement with the driver 1 1, which is pivotally mounted on the slider 7.

The self-closing mechanism 5 is shown in detail in FIG.

The housing 6 comprises a receptacle 60 into which the damper 8 and the spring 9 can be inserted. Along the receptacle 60, a strip-shaped guide 61 is formed, which serves for the linear guidance of the slide 7. In extension of the receptacle 60, a protruding web 62 is formed on the housing 6, which also serves to guide the slide 7 and is encompassed by two sliding elements 73. Between the receptacle 60 and the web 62, a wall portion 65 is formed, on which an opening 66 is provided. On the wall portion 65, an end face of a damper housing 80 is supported, while through the opening 66, a piston rod 81 of the damper 8 is performed. The cylindrical damper housing 80 is supported on the opposite side to the piston rod 81 on a wall 68 of the housing 6 and optionally fixed there by clamping. The slider 7 has a receptacle 70 for a spring 9, wherein the receptacle 70 is connected via longitudinally extending webs 71 with a holder 72. Sliding elements 73 for guiding the slider along the web 62 are provided on the holder 72. Further, the holder 72 includes an opening into which a head portion 82 is inserted on the piston rod 81 so that the slider 7 is connected to the piston rod 81 while the damper case 80 is fixed or supported on the case 6.

On the slider 7, a bearing 76 is further formed for the driver 1 1, so that it is pivotally or rotatably supported on the slider 7. Above the bearing 76, a locking receptacle 77 is provided, so that the driver 1 1 can be fixed by pivoting on the slide 7. The driver 1 1 is further held by a guide portion 27 along a guide rail 63 on the housing 6 slidably. The guide track 63 comprises an angled end section 64 in order to be able to latch the driver 11 in a tensioned position of the spring 9.

The spring 9 is formed as a spiral spring and arranged around the damper housing 80. In this case, the spring 9 comprises a first end 90, on which a winding is provided, which protrudes radially at least in regions. This radially projecting winding is inserted into a pocket 67 or receptacle on the housing 6, so that via the spring 9 tensile and compressive forces can be transmitted to the housing 6. Similarly, on the opposite side at a second end 91, a radially protruding winding is formed, which is inserted into a pocket or receptacle on the slider 7. When the slider 7 is moved relative to the housing 6, both the spring 9 and the damper 8 are effective.

In FIGS. 5A to 5D, the self-closing mechanism 5 is shown in a tensioned position, in which the pullout guide 1 has been moved in the opening direction. As a result, the slider 7 was moved against the force of the spring 9 along the housing 6 until the driver 1 1 has arrived at the angled end portion 64 and was pivoted there. As a result of the pivoting of the driver 1 1, a coupling between the driver 1 1 and the activator 10 has been released so that the running rail 4 can be moved independently of the self-closing 5 in this position. The driver 1 1 remains in the locked position until the activator 1 0 is moved back to the running rail 4 in the closing direction and the driver 1 1 unlocked thereby. When the driver 1 1 is unlocked, the slider 7 moves due to the force of the spring 9 and a kinetic energy of the track rail 4 and a component connected to the track rail 4 further in the closing direction. As a result, the piston rod 81 is retracted into the damper housing 80 and develops braking forces to decelerate the movement. The damper 8 may be formed as a fluid damper, for example with silicone oil to provide appropriate damping forces even at high weights.

In FIGS. 6A to 6D, the retraction position is shown when the running rail 4 has been moved with a drawer in the closing direction. The spring 9 is in a substantially relaxed state, and the piston rod 81 is largely retracted into the damper housing 80. The driver 1 1 is located with the guide portion 27 along the linear portion of the guide track 63. The driver 1 1 is coupled to the activator 1 0 pelt, which is not shown for reasons of simplified illustration in Figure 6. If the running rail 4 is now moved in the opening direction, the activator 1 0 pulls the driver 1 1 along the guide rail 63 against the force of the spring 9 and also pulls the piston rod 81 out of the damper housing 80. Then the self-closing 5 can be converted back into the cocked position of Figure 5.

In FIGS. 7A to 7C, only the slide 7 with the spring 9 is shown. It can be seen that the spring 9 engages with the radially projecting winding at the second end 91 in a pocket 74 or receptacle and can transmit both tensile and compressive forces on the slide 7. On the slider 7, the bearing 76 for the driver 1 1 is also recognizable and the locking receptacle 77. The slider 7 is guided via guide rails 75 on the guide 61 of the housing. In Figure 8, the housing 6 is shown only with the damper 8, with the

Damper housing 80 between the wall 68 and the wall portion 65 is held.

In Figure 9, the housing 6 is shown only with the spring 9. The spring 9 is received with the first end 90 with the radially protruding winding in a pocket 67 of the housing 6. In the spring 9 then the damper 8 can be inserted, before then the slide 7 is mounted. In FIGS. 10A to 10D, the driver 11 is shown in detail. The driver 1 1 includes a bearing pin 26 which is inserted into the bearing 76 on the slider 7. In the axial extension of the bearing pin 26, a bolt 25 is arranged, which can be inserted into the locking receptacle 77 on the slide 7 can, so that the driver 1 1 can be mounted without tools on the slide 7 to this rotatably on the slide 7 to to store. On the driver 1 1 is also a guide portion 27 which engages in the guide track 63 of the housing 6. In this case, the guide section 27 passes through the guideway 63 formed as a slot and is secured against being pulled out. On the driver 1 1 are also projections 28 and 29, which can get into engagement with the activator 1 0.

The activator 10 is shown in detail in FIGS. 11A to 11D. The activator 1 0 comprises a projection 1 5 and an opening 1 6 for fixing to the rail 4. Further, projections 1 7 and 1 8 are formed on the activator 10, which engages with the projections 28 and 29 of the driver can reach to unlock it from the locked position on the angled end portion 64 and to produce a coupling between the activator 1 0 and driver 1 1.

In the illustrated embodiment, the spring 9 is formed as a tension spring. In addition, the damper 8 is designed as a pressure damper, the damping forces generated during insertion of the piston rod 81 in the damper housing 80. It is also possible to form the spring 9 as a compression spring and additionally or alternatively to provide the damper 8 as a tensile damper, which generates damping forces when pulling out the piston rod 81 from the damper housing 80.

The self-closing 5 is preferably used in conjunction with a pullout guide 1, as shown with reference to Figures 1 to 3. However, it is also possible to use the self-closing 5 for sliding doors or other movable furniture parts or components.

In the illustrated embodiment, the self-closing mechanism 5 is used to decelerate a running rail 4 during its closing movement in relation to the guide rail 2 and to pull it into the closed end position.

In contrast, however, it is also possible to use the self-closing mechanism 5 for pulling and / or braking the running rail 4 in its open position. the. This thus leads to a damped opening movement and to a reliable reaching the opening end position.

In Figure 1 2, a modified embodiment of a pullout guide 1 'is shown, in which the guide rail 2 and the middle rail 3 are formed as in the previous embodiment, only the running rail 4' is changed, since no activator as a separate component on the running rail 4 ' is fixed, but on the running rail 4 ', a recess 45 is provided to form a web-shaped activator 46 at the end, which is formed integrally with the running rail 4'. The web-shaped activator 46 can be brought into engagement with a driver 1 1 'of a modified self-closing 5'.

The self-closing 5 'is shown in detail in Figures 1 3A and 1 3B. The driver 1 1 'is rotatably mounted on the slide 7', wherein for this purpose an opening 76 'is formed on the slide 7', in which a pin of the driver 1 1 'engages. The driver 1 1 'is, unlike in the first embodiment, in which the driver 1 1 is pivotable about an axis of rotation, which is aligned perpendicular to the plane defined by the rolling elements 1 2 plane rotatable about an axis perpendicular is arranged to the direction of travel of the running rail 4 'and in the plane which is spanned by the rolling elements 1 2. The driver 1 1 'comprises a receptacle 30 which is arranged between two projections 31 and 32. The web-shaped activator 46 can engage in the receptacle 30 in order to move the driver 11 'against the force of the spring 9 and the damper 8.

The driver 1 1 'is guided along a modified guide track 63' which, instead of an angled end section, has a receptacle 64 ', on which the driver 11' can be latched with the spring 9 cocked. In this parking position, the driver 1 1 'is pivoted to rotate the receptacle 30 and release the web-shaped activator 46, so that the running rail 4' decoupled from the self-closing 5 'can be moved. When the running rail 4 'is again moved in the closing direction, the web-shaped activator 46 strikes the projection 32 of the driver 1 1' in order to unlock it from the latched parking position and then decelerated by the force of the spring 9 and the damper 8 and in Closing direction to be moved. Incidentally, the mode of operation of the self-closing mechanism 5 'corresponds to the self-closing mechanism 5 explained in detail. In FIGS. 14A and 14B, the driver 11 'is shown in detail. The driver 1 1 'comprises a pin 33 which is insertable into the opening 76' of the slider 7 '. Further, a receptacle 30 is formed on the driver 1 1 ', which is surrounded by two projections 31 and 32 in order to accommodate the web-shaped activator 46 in the recording can. In the axial extension of the pin 33, a boom 35 is further provided, which serves to guide and movement of the driver 1 1 '. On the opposite side to the receptacle 30 a planar sliding surface 34 is arranged, which is movable on the guide 63 'of the housing 6.

1 5 shows a modified pull-out guide with a self-closing mechanism, which is designed similarly to the preceding embodiments, but a bent tab is designed as an activator 47 on the running rail 4 "The bent tab of the activator 47 is in an end region of FIG Running rail 4 "is arranged, wherein the activator 47 can be brought into engagement with a modified driver 1 1" Incidentally, the Selbsteinzug with the damper 8, the spring 9, the slide 7 and the housing 6 is constructed as in the previous embodiments the running rail 4 "is further formed a web 48 which cooperates with a projection of the driver 1 1" to unlock the driver 1 1 "from its parked position on an angled end portion 64 of the guide track 63.

In Figure 1 6, the running rail 4 "is shown in detail, in which an opening is punched out in the end region, on which the tab is bent as an activator 47 substantially at right angles.

1, 7A and 1 7B, the driver 1 1 "is shown in detail interacting with the activator 47. The driver 1 1" comprises a receptacle 30 "into which the activator 47 protruding from the running rail 4" can be inserted the activator 47 is held between two projections 28 "and 29". The driver 11 'additionally has a guide section 27 which engages in the guide track 63 on the housing 6. On the driver 11' a bearing pin 26 is formed, which can be inserted into the bearing 76 on the slide 7 and in axial extension of the journal 26, a bolt 25 is arranged, which can be inserted into the latching receptacle 77 on the slide 7. Even with this driver 1 1 ", it is possible that the activator 47 is integrally formed with the running rail 4". In Figures 18A and 18B there is shown another embodiment of a driver 11 '''having a journal 26, a bolt 25 and a guide portion 27. The other geometric configuration of the driver 11''' also allows the activator to modify.

LIST OF REFERENCE NUMBERS

1 pullout guide

2 guide rail

3 middle rail

4, 4 ', 4 "track rail

5, 5 'self-closing

6 housing

7, 7 'slide

8 dampers

9 spring

10 activator

1 1, 1 1 ', 1 1 ", 1 1"' driver

12 rolling elements

13 rolling element cage

14 rolling element cage

15 advantage

1 6 opening

17 lead

18 lead

19 fasteners

20 floor

21 thighs

22 footbridge

23 tab

24 holders

25 bolts

26 bearing pin

27 guide section

28, 28 "ahead

29, 29 "ahead

30, 30 "recording

31 lead

32 advantage

33 cones

34 sliding surface

35 outriggers

40 floor

41 footbridge web

Long hole

opening

recess

activator

web

admission

guide

web

, 63 'guideway, 64' end section

wall section

opening

bag

wall

admission

web

holder

Slider pocket

Guide rail, 76 'bearing

latching receptacle

damper housing

piston rod

header

The End

Claims

claims

1 . Self-closing mechanism (5), in particular for pull-out guides (1), with a housing (6) in which a guide (61) for a linearly movable slide (7, 7 ') and a guide track (63) for a slide (7 , 7 ') is provided, wherein the driver (1 1, 1 1', 1 1 ", 1 1" ') with an activator (10 ) is coupled and between the housing (6) and the slide (7, 7 '), a damper (8) with a damper housing (80) and a piston rod (81) is provided, characterized in that the damper (8) has a Spring (9) is arranged, by means of which the slide (7, 7 ') is biased in a retraction position on the housing (6).

2. Selbsteinzug according to claim 1, characterized in that the spring (9) is designed as a spiral spring, which is arranged around the damper housing (80).

3. Self-closing according to claim 1 or 2, characterized in that the spring (9) is designed as a tension spring, which is relaxed in the retracted position.

4. Self-closing mechanism according to one of the preceding claims, characterized in that the spring (9) at a first end (90) on a first holder (67) on the housing (6) and at a second end (91) on a second holder (74) is fixed to the slider (7, 7 ').

5. Selbsteinzug according to claim 4, characterized in that the spring (9) at the first end (90) and / or the second end (91) each having at least one at least partially projecting in the radial direction winding.

6. Selbsteinzug according to any one of the preceding claims, characterized in that the damper housing (80) on a receptacle (60) of the housing (6) is held and the slide (7, 7 ') is movable together with the piston rod (81), or that the piston rod (81) on the housing (6) is held and the slide (7, 7 ') together with the damping housing (80) is movable.

7. Self-closing according to one of the preceding claims, characterized in that on the slide (7, 7 ') of the driver (1 1, 1 1', 1 1 ", 1 1" ') is pivotally mounted.

8. pullout guide (1) with a stationary guide rail (2) and a relative to the guide rail (2) movable running rail (4, 4 ', 4 "), characterized in that a self-closing (5) according to any one of claims 1-7 between the running rail (4, 4 ', 4 ") and the guide rail (2) is provided.

9. pullout guide according to claim 8, characterized in that the

Self-closing (5) in the retracted position of the pullout guide (1) between the running rail (4, 4 ', 4 ") and the guide rail (2) is arranged.

10. pullout guide according to claim 8 or 9, characterized

the guide rail (2) and the running rail (4, 4 ', 4 ") are C- or U-shaped in cross-section and the C- or U-shaped legs of the guide rail (2) and the running rail (4, 4'). , 4 ") face each other.

1 1. Pull-out guide according to one of claims 8 to 10, characterized in that with the driver (1 1, 1 1 ', 1 1 ", 1 1"') coupled activator (10) on the running rail (4) or at one with the Running rail coupled thrust element is arranged.

12. pullout guide according to one of claims 8 to 1 1, characterized in that between the guide rail (2) and the running rail (4, 4 ', 4 ") a middle rail (3) is provided which is shorter than the guide rail (2) and the running rail (4, 4 ', 4 ") is formed, and the self-closing (5) is arranged in extension of the center rail (3).

13. pullout guide according to one of claims 8 to 12, characterized in that with the driver (1 1 ') couplable activator (46) integral with the running rail (4') is formed.