EP3132105B1 - Accelerating or braking device - Google Patents

Description

The present invention relates to an acceleration or braking device for furniture or household appliances, comprising a driver which is movable along a guideway and having a receptacle into which a portion of an activator is inserted to the driver along the guideway against the force of a damper method, wherein the activator rests on a contact surface of the driver when hitting the driver.

The DE 10 2012 109 752 discloses an ejector with a pullout guide having a moveable track with an activator. The activator is designed as a flexible lever which can be inserted with a projection into a receptacle of a driver in order to move the driver along a guideway. The driver is coupled to a latching mechanism so that a drawer can be latched in a closed position. Due to the design of the activator as a flexible lever, the mechanism shown can be poorly used for a damping device can occur in the high impact forces to decelerate a movable thrust element, because then it can cause a skip when the projection is pushed out of the recording of the driver ,

In order to avoid such skipping, is in the EP 2 401 941 proposed to lead in self-closing a driver along a guideway, which can be brought into engagement with a projection of an activator. The guideway for the driver has adjacent to an angled end portion a cover, by means of which the activator is prevented from moving out of the receptacle of the driver out. Through the cover thus the coupling between driver and activator can be secured, however, the cover requires additional space.

It is therefore an object of the present invention to provide an acceleration or braking device for furniture or household appliances, which ensures a compact design, a secure coupling of the activator and the driver.

This issue is solved with an acceleration or braking device having the features of claim 1.

In the case of the acceleration or braking device according to the invention, a driver can be moved along a guideway, an activator abutting a contact surface of the driver when hitting the driver and the contact surface being oriented at least partially inclined to a direction perpendicular to the direction of movement of the driver so that the portion of the Activator is pivoted when hitting the contact surface in the recording. Thereby, a skipping of the activator can be prevented at the driver, as forces are selectively generated in a hitting the activator on the driver, which pivot the portion of the activator in the recording to avoid jumping out of the recording. This slight pivoting movement of the portion of the activator can also absorb a certain impact energy in addition to the secure coupling of the driver with the activator, which is advantageous especially at high damping forces. The acceleration or braking device can be used in particular for sliding doors or drawers for furniture or household appliances, so that malfunction in the sliding elements can be safely avoided.

The inclined region of the contact surface forms a sliding surface in order to pivot the activator in a certain range. According to a preferred embodiment of the invention, the inclination of the contact surface to a direction perpendicular to the direction of movement of the driver at an angle between 4 ° and 30 °, in particular 6 ° and 20 °, inclined. The contact surface need not be formed linear, but may also be at least partially arcuate. Due to the inclination of the contact surface, forces are generated on impact of the activator on the contact surface, which provide for a certain pivoting of the activator in the recording into it, wherein the size of the pivoting movement is dependent on the damping forces. The pivoting path can therefore be in a range between 0.1 mm and 5 mm, in particular 0.5 mm to 3 mm, wherein the contact surface forms a sliding surface for the driver. The contact surface has a stop or a non-inclined portion to limit the Verschwenkweg of the activator.

Preferably, the receptacle is substantially U-shaped and comprises two side walls and a bottom. The contact surface may be formed on a side wall of the receptacle, so that is pivoted relative to the bottom of the receptacle upon impact of the activator on the contact surface of the end portion.

Also, the activator may have a surface which abuts against the contact surface and is inclined in a direction perpendicular to the direction of movement of the driver. Thereby, the impact forces can be distributed over a larger area, wherein the inclination on the surface of the activator, which bears against the contact surface, may be the same as the inclination of the contact surface when the driver is moved along a linear portion of the guideway. The inclination of the surface to a direction perpendicular to the direction of movement of the driver can be arranged at an angle between 4 ° and 30 °, in particular 6 ° and 20 °.

It is also possible to roughen the contact surface on the driver and / or the contact surface with the activator by suitable means or by coating or provided with a lubricious coating in order to change the coefficients of friction of the two surfaces as desired.

In a further embodiment, the activator is web-shaped and fixed on the opposite side to the section for coupling with the driver. The activator can form a lever between the attachment point and the portion coupled to the driver, which has, for example, a length between 1 cm and 8 cm, in particular 3 cm to 6 cm. Preferably, the activator is aligned substantially parallel to the direction of movement of the driver, so that only little space is required perpendicular to the direction of movement. The direction of movement of the driver can be aligned parallel to a running rail of a sliding door fitting or a pull-out guide.

The guideway for the driver may be substantially linear and have at least one angled end portion on which the driver can be latched. Thereby, in a first step after the impact of the activator on the contact surface, the driver can be pivoted and unlocked by releasing the catch on the angled end portion, and then the relative movement between the activator and the actuator can be released Guideway for the driver to be braked by the action of the driver. For this purpose, preferably a damper, in particular a linear damper, is used, which provides sufficient damping forces for the respective application. Corresponding dampers can work as fluid dampers, in particular with an oil, which is moved in a damper housing by a piston.

The acceleration or braking device according to the invention can be used in particular in a sliding door fitting, for example on the underside of a sliding door to decelerate the movement of the closing movement. In this case, the guideway may be formed on a housing which is fixed to the sliding door, so that the activator is fixedly fixed to the furniture or household appliance. Of course, it is also possible to fix the activator on the sliding door and to provide the housing with the guideway stationary on a body.

Figuren 1A und 1B

zwei perspektivische Ansichten eines Möbels mit einer erfindungsgemäßen Beschleunigungs- oder Bremsvorrichtung;

Figur 2

eine vergrößerte Detailansicht der Beschleunigungs- oder Bremsvorrichtung der Figur 1;

Figur 3

eine perspektivische Explosionsdarstellung der Beschleunigungs- oder Bremsvorrichtung;

Figuren 4A und 4B

zwei Ansichten der Beschleunigungs- oder Bremsvorrichtung mit dem Aktivator in unterschiedlichen Positionen;

Figuren 5 bis 9

mehrere Ansichten der Beschleunigungs- oder Bremsvorrichtung beim Auftreffen des Aktivators auf den Mitnehmer in einer leicht modifizierten Ausgestaltung, und

Figuren 10A und 10B

zwei Ansichten einer weiteren modifizierten Beschleunigungs- oder Bremsvorrichtung.

The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it:

Figures 1A and 1B

two perspective views of a piece of furniture with an acceleration or braking device according to the invention;

FIG. 2

an enlarged detail view of the acceleration or braking device of FIG. 1 ;

FIG. 3

an exploded perspective view of the acceleration or braking device;

FIGS. 4A and 4B

two views of the acceleration or braking device with the activator in different positions;

FIGS. 5 to 9

several views of the acceleration or braking device upon impact of the activator on the driver in a slightly modified embodiment, and

Figures 10A and 10B

two views of another modified acceleration or braking device.

A piece of furniture 1 comprises a body 2 with two side walls 3, a bottom 4 and a top floor 6. A guide rail 5 is fixed to the floor 4 and a retaining rail 7 is fixed to the top floor 6 in order to movably support one or more sliding doors 8. The sliding door 8 is in Figure 1A moved in the closing direction according to the arrow and is located in FIG. 1B in the closed position. Of course, two or more sliding doors 8 can also be movably mounted on the body 2.

In FIG. 2 a lower portion of the sliding door 8 is shown, and it can be seen that the sliding door 8 is held on a carriage 9, which is supported on the guide rail 5 via one or more rollers. In order to avoid striking the sliding door 8 during a closing movement, an acceleration or braking device 10 is provided which brakes the sliding door 8 shortly before reaching the closed position.

Exemplary of an acceleration or braking device 10 is acting as a braking device damping device in the FIGS. 3 to 10 shown in detail. The brake device 10 comprises a housing 11, which is fixed in the lower region of the sliding door 8. On the housing 11, a guide track 12 is formed, which has a linear portion and an angled end portion 13. On the guideway 12, a driver 14 is movably guided, which has protruding guide pins 15 on opposite sides, which are movable in the guideway 12.

The driver 14 also has a substantially U-shaped receptacle 16 with two side walls and a bottom, which serves for coupling with an activator 21. The driver 14 is connected to a force accumulator 17 in the form of a spring which is fixed at one end to the housing 11 and at the other end to the driver 14 and biases the driver 14 in an end position relative to the angled end portion 13 to the sliding door 8 to move to the closed position.

Further, a damper with a damper housing 18 and a piston rod 19 is fixed to the housing 11, which is coupled to the driver 14. For this purpose, a corresponding connecting element 20 is provided on the piston rod 19. In the damper housing 18, a damping fluid, such as an oil, may be provided, which during retraction of the piston rod 19 by a Piston is moved to generate according to the weight of the sliding door 8 sufficiently high damping forces.

On the guide rail 5, an activator 21 is fixed, which is web-shaped and is held with a first end 22 via fastening means on the guide rail 5. At the opposite end, a portion 23 is provided which can come into engagement with the driver 14.

In FIG. 4A the braking device 10 is shown shortly after the coupling of the activator 21 with the driver 14. The portion 23 abuts with a surface on a contact surface 24 of the driver 14, which is formed on a side wall. The driver 14 has been swung out of contact with the activator 21 from the angled end portion 13, so that now the two guide pins 15 are arranged in the linear portion of the guide track 12. If the sliding door 8 is now moved further in the closing direction via the carriage 9 with the rollers 90, the piston rod 19 is retracted into the damper housing 18 so that damping forces are generated. This can lead to high forces, especially in heavy sliding doors 8, which can lead to skipping of the driver 14. To avoid this, the contact surface 24 is not aligned perpendicular to the direction of movement of the driver 14 along the linear portion, but inclined thereto, preferably in an angular range between 4 ° and 20 °. Thus, at high damping forces, the contact surface 24 is used to pivot the resilient portion 23 of the activator 21 in the receptacle 16 to counteract a possible skipping of the activator and to increase the reliability.

In FIG. 4B the pivoted position of the portion 23 'is shown, which was easily pivoted into the receptacle 16 due to high damping forces. Unlike FIG. 4A the portion 23 is no longer aligned in the longitudinal direction of the web-shaped activator 21, but slightly inclined thereto, since the portion 23 'along the contact surface 24 has been moved into the receptacle 16. The contact surface 24 is initially linear and then bent to limit the range of movement of the portion 23 '.

In the FIGS. 5 to 9 the damping process of the brake device 10 is described in detail. In this case, an activator 21 is used, which has, in addition to the end-side section 23, a recess 29 into which a leg 26 can be inserted. The leg 26 is on the contact surface 24th opposite side of the receptacle 16 is arranged. Incidentally, the brake device 10 corresponds to the previous embodiment.

In FIG. 5 the position is shown in which the driver 14 is latched to the angled end portion 13 of the guideway 12. For this purpose, a guide pin 15 is disposed on the angled end portion 13, and the driver 14, despite the tensile force of the energy accumulator 17 is not in the in FIG. 5 right position to be moved. In order to unlock the driver 14 in a first step, the section 23 of the activator 21 strikes the contact surface 24, so that the driver 14 is pivoted in a first step, as shown in FIGS FIGS. 5, 6 and 7 is shown. In FIG. 6 is the driver 14 when unlocking while in FIG. 7 is unlocked, and both guide pins 15 are located in the linear portion of the guideway 12th

After unlocking, the piston rod 19 is inserted into the damper housing 18, and damping forces are generated for decelerating the relative movement between the sliding door 8 and the furniture body. In this situation, skipping of the activator on the cam 14 must be prevented by aligning the contact surface 24 inclined to the direction of travel of the cam 14 along the linear portion of the track 12, preferably at an angle between 4 ° and 20 °. As a result, the portion 23 is pivoted at high damping forces into the receptacle 16, as the FIGS. 7 and 8th illustrate. At high damping forces, the portion 23 undergoes a force component in the direction of the receptacle 16 moves toward, so that the portion 23 is pressed in the direction of the bottom of the receptacle 16. Thus, skipping is safely avoided. If the sliding door 8 is braked, the force accumulator 17 designed as a tension spring ensures that the driver 14 is moved into a closed position, the leg 26 being arranged behind the section 23 and thus being able to pull the sliding door 8 in the closing direction.

If the sliding door 8 is moved in the closing direction at a high closing speed, the section 23 is pivoted into the receptacle 16 of the driver 14 in a first step, as shown in FIG FIG. 8 is shown. A gap 30 between the housing 11 and the guide rail 5 is formed small. If the sliding door 8 is lifted slightly due to the high speed, in particular around the front roller 90 of the carriage 9 in the closing direction, the housing 11 can be raised relative to the guide rail 5 and a gap 30 'is created (FIG. FIG. 9 ), which is larger than the gap 30 without lifting The sliding door 8. By the inclined orientation of the contact surface 24 and the pivoting of the portion 23 of the activator 21, however, ensures that even with a slight lifting of the sliding door 8, the coupling between the activator 21 and driver 14 is maintained, because the section 23 is at Impact on the contact surface 24 moves into the receptacle 16, so that even with a lifting of the sliding door 8 by the damping forces the coupling is not released.

In the Figures 10A and 10B a modified embodiment is shown in which an activator 21 'is used, which has a multi-part construction instead of a one-piece design. For this purpose, a modified end portion 40 is provided which is rotatably mounted about an axis 41 on the activator 21 '. The end portion 40 can impinge on a driver 14 on a contact surface 24 as in the previous embodiment, wherein after the unlocking of the driver 14 damping forces can be generated, which provide for a pivoting of the end portion 40 about the axis 41, as shown in FIG FIG. 10B is shown. The end portion 40 may be in the in Figure 10A be shown biased position by a spring to pivot only under the action of force by the contact surface 24. Also in this embodiment, the impact forces are at least partially absorbed by the inclined arrangement of the contact surface 24 by a pivoting movement of the end portion 40, so that the reliability is improved by the coupling of the activator 21 'with the driver 14. Incidentally, this embodiment is formed like the brake device 10.

In the illustrated embodiments, the contact surface 24 is inclined to a perpendicular to the path of movement of the driver 14 along the linear portion of the guideway 12 is aligned. The inclination of the contact surface 24 is not determined in the latched position, since the driver 14 is arranged there pivoted with a guide pin 15 at the angled end portion 13. Rather, the inclination of the contact surface 24 is then determined when both guide pins 15 are aligned along the linear portion of the guide track 12, since only then the damper is compressed and generates the required damping forces.

In the illustrated embodiment, the use of the braking device is shown as a damping device in a sliding door. Of course, it is also possible, the brake device 10 in drawer slides on drawers provide, with the sliding doors or drawers can be used both in furniture and household appliances.

Furthermore, an application of this device in an acceleration device is conceivable. Acceleration device is understood to mean a drive device by means of which a movable component, such as a sliding door or a drawer, is set in motion from a stationary starting position, for example after unlocking a touch-latch fitting. The coupling between activator and driver can be formed as in the embodiment described above, wherein the movement of the movable member is accelerated and not braked.

LIST OF REFERENCE NUMBERS

1

Furniture

2

corpus

3

Side wall

4

ground

5

guide rail

6

topsoil

7

retaining rail

8th

sliding door

9

carriage

10

braking device

11

casing

12

guideway

13

end

14

takeaway

15

spigot

16

admission

17

power storage

18

damper housing

19

piston rod

20

connecting member

21, 21 '

activator

22

The End

23, 23 '

section

24

contact area

26

leg

29

recess

30, 30 '

gap

40

end

41

axis

90

caster

Claims (13)

1. An accelerating or braking device (10) for furniture (1) or household appliances, comprising a guide track, an activator and a catch (14) that can be moved along the guide track (12) and has a receiving means (16) into which a section (23, 40) of the activator (21, 21') can be inserted in order to move the catch (14) along the guide track (12) against the force of a damper (18, 19), wherein the activator (21, 21') is applied to a contact surface (24) of the catch (14) when impinging on the catch (14), characterized in that the contact surface (24) is oriented in an inclined manner at least in some sections in relation to a direction perpendicular to the direction of movement of the catch (14) and the section (23, 40) of the activator (21, 21') is pivoted into the receiving means (16) when impinging on the contact surface (24).
2. An accelerating or braking device according to claim 1, characterized in that the inclination of the contact surface (24) is inclined in relation to a direction perpendicularly to the direction of movement of the catch (14) at an angle of between 4° and 30°, especially 6° and 20°.
3. An accelerating or braking device according to claim 1 or 2, characterized in that the receiving means (16) is formed in a substantially U-shaped manner and the contact surface (24) is formed on a side wall of the receiving means (16).
4. An accelerating or braking device according to one of the preceding claims, characterized in that the activator (21, 21') has a surface resting on the contact surface (24), which is oriented in an inclined manner in relation to a direction perpendicular to the direction of movement of the catch (14).
5. An accelerating or braking device according to claim 4, characterized in that the inclination of the surface is inclined in relation to a direction perpendicular to the direction of movement of the catch (14) at an angle of between 4° and 30°, especially 6° and 20°.
6. An accelerating or braking device according to one of the preceding claims, characterized in that a section (23, 23') of the activator (21, 21') is formed in a resilient manner.
7. An accelerating or braking device according to one of the preceding claims, characterized in that the contact surface (24) is formed in a curved manner.
8. An accelerating or braking device according to one of the preceding claims, characterized in that the activator (21, 21') is formed in a web-like manner and is fixed on the side opposite the section (23, 40).
9. An accelerating or braking device according to one of the preceding claims, characterized in that the activator (21, 21') extends substantially parallel to the direction of movement of the catch (14).
10. An accelerating or braking device according to one of the preceding claims, characterized in that the guide track (12) is formed in a substantially linear manner and comprises an angled end section (13) onto which the catch (14) can be latched.
11. A sliding door with an accelerating or braking device (10) according to one of the preceding claims.
12. A sliding door according to claim 11, characterized in that the guide track (12) is formed on a housing (11) which is fixed to a bottom side of the sliding door (8).
13. A drawer with an accelerating or braking device (10) according to one of the preceding claims.

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