DE202009004951U1 - Detent fitting and pullout guide - Google Patents

Abstract

Detent fitting, in particular for mounting on a pullout guide, with a switching element (12) which is movable along a switching cam (23), wherein the switching element (10) in a closed position on the switching cam (23) can be latched and a spring (35) is biased in the latched position, wherein on the switching cam (23) at least one branch (24, 29, 31) for the switching element (12) is provided, characterized in that the switching element (12) in the region of the branch (24, 29 , 31) is acted upon by a magnet (22) in one direction with a magnetic force.

Description

The The present invention relates to a detent fitting, in particular for mounting on a pullout guide, with a switching element, which is movable along a switching cam, wherein the switching element locked in a closed position on the switching cam is and biased by a spring in the latched position is, wherein at the switching curve at least one branch for the switching element is provided, as well as a pullout guide.

From the EP 743032 a drawer slide is known, in which a locking of the drawer in a closed position is achieved in that a spring-loaded locking element can be fixed in a locking position. For this purpose, the locking element is coupled to a latch which is fixed in a closed position, wherein upon depression of the drawer, the latch is released again, which is then moved by a spring in an open position. The latch is movable along a curve guide. In such a detent fitting, there may be incorrect operations when the movable in the switching cam switching element is not moved in the desired direction, in particular in a region of a branch, in which the switching element is no longer constrained.

In the EP 1845821 discloses a closing and opening device for a pullout guide in which a switching element is guided along a groove-shaped cam, wherein in the region of the branches a false operation is possible when the switching element is moved in the wrong direction within the switching curve. This may be the case, in particular, when there is a gravitational effect in a changed installation position. Faulty actuations are also possible due to production fluctuations and tolerances. If the cam is provided with a lubricant for a smooth movement of the switching element, the lubricant can also pose a problem for the reliability.

It is therefore an object of the present invention, a catch fitting to create, in which a mishandling safely avoided becomes. In this case, the catch fitting should be made compact.

These Task is with a locking fitting with the features of the claim 1 solved.

According to the invention a misoperation of the switching element thereby avoided that the switching element in the region of the branch via a Magnet in one direction with a magnetic force is applied. The magnet can be directly on the switching element or a act with the switching element coupled magnetizable component. It it is also possible to fix the magnet on the switching element, which cooperates with another magnetizable component. In In any case, the magnetic force in the area of a branch ensures that the switching element is secured against incorrect operation, So is moved in the prescribed path of the switching curve. As a result, the catch fitting can be standardized, regardless of which mounting position the switching cam is mounted in. This makes the catch fitting against occurring weight forces insensitive.

Preferably the magnet is fixed to a housing of the switching curve. The housing may be made of plastic, for example be in one or more locations adjacent to a turnoff a magnet is inserted. Before preferably are on the switching curve provided two branches and at each turn a magnet acts on the switching element. This allows the switching curve a loop-shaped Section have, in particular in the pressure in the closing direction necessary to be operated ejection fittings is.

In order to the catch fitting is composed of few components, points the switching element preferably comprises a magnetizable material, In particular, the switching element of a wire hanger be formed. As a result, the switching element itself by the magnet influenced. Preferably, the magnet has on the switching element in the area of a diversion an attractive effect, so that if necessary acting weight forces can be compensated.

Of the Magnet is preferably designed as a permanent magnet, so that no control is necessary. It is also possible the Form magnets as controllable electromagnet, so that he activated only at a certain position of the switching element becomes.

According to the invention Also provided a pullout guide in which a latching fitting according to the invention is coupled with a running rail. The locking fitting can in particular mounted on opposite sides of a drawer be, so that the drawer after a push-in can open automatically, while closing optionally also a self-closing and / or a damping can work.

The Invention will be described below with reference to an embodiment with reference to the accompanying drawings explained. Show it:

1 a perspective view of a drawer with the locking fitting;

2 a perspective view of a pullout guide with the latching fitting according to the invention;

3 a view of the pullout guide according to 2 with an exploded view of the detent fitting;

4A to 4D several detailed views of the switching curve with different positions of the switching element;

5A to 5E several views of the switching curve of the locking fitting, and

6 a perspective view of the switching curve in the mounting of the magnets.

A drawer 1 includes a front side wall element 2 , with two side walls 3 connected is. Every sidewall 3 is coupled via a pullout guide with a side wall of a furniture body. For this purpose, plate-shaped holding elements 4 the pullout guide provided. On the pullout guide is also a catch fitting 5 mounted, in particular in the region of a closed position of the drawer 1 is effective.

As in the 2 and 3 can be seen, the pullout guide comprises a guide rail coupled to the holding elements 6 at the middle of a rail 7 and a running track 8th are movably mounted. At the track 8th is the drawer 1 held. The track 8th is about one or more components with the catch fitting 5 coupled.

The catch fitting 5 includes a movable carrier 10 who has a lead 11 acting on an activator. The activator is located on the drawer and is not shown for simplicity. The driver 10 is on a guide element 9 guided and over a spring 35 in a closing direction of the drawer 1 biased. The driver 10 is with a switching element 12 connected, which has a bent wire hanger with an angled end 14 , On the opposite side of the switching element 12 is a head 13 with the driver 10 connected.

The driver 10 is also with a pole 18 connected to a ball head 20 for locking on the driver 10 having. The pole 18 also has a thickened end section 19 on that in a compression spring 17 intervenes. The compression spring 17 is on the one hand on a ring of the pole 18 and on the opposite side to a bottom of a cylindrical housing 15 supported. The compression spring 17 has a greater spring force than the spring 35 and is used to move the drawer 1 in an opening direction.

The catch fitting 5 further comprises a housing 21 in which a switching curve for the switching element 12 is trained. The housing 21 is fixed to the guide element 9 coupled.

In the 4A to 4D is the case 21 with the switching curve 23 shown in which the switching element 12 with the angled end 14 is guided. The switching curve 23 in the case 21 is groove-shaped and comprises a loop-shaped portion. In the region of a closed position of the drawer is a first turn 24 formed, in which the angled end portion 14 of the switching element 12 arrives when the drawer 1 is moved in the closing direction ( 4B ). To the drawer 1 Locking in the closed position is in the switching curve 23 a blind groove lying in the closing direction 25 trained, opposite a detent recess 26 lies. In the area of the branch 24 becomes the switching element 12 therefore first in the blind groove 25 moved until a front panel of the drawer strikes the furniture body. Then the drawer 1 due to the force of the compression spring 17 back to a resting recess 26 moved, so that in 4C shown position is reached.

To the drawer 1 To open again, the front panel is pressed into the furniture body, so that the switching element 12 from the dormitory 26 against the force of the spring 17 is moved out. The end section 14 is thereby by a tarnish 28 in a lying in the closing direction bag groove 27 moved in, spaced and parallel to the blind groove 25 is arranged. If the drawer 1 is released, the switching element 12 now in the loop-shaped section of the switching curve 23 due to the force of the compression spring 17 be moved back until a second turn 29 is reached. Subsequently, the switching element 12 in an outlet 32 moves like this in 4A is shown.

In the area of the branches 24 and 29 It may come due to the installation situation to incorrect operations when the switching element 12 with the end section 14 is not moved in the desired direction. To avoid such misoperation, are in the housing 21 the switching curve 23 adjacent to the branches 24 and 29 magnets 22 intended. The magnets 22 are formed as permanent magnets in the form of bar magnets, which are in corresponding openings 30 in the case 21 are inserted.

In case of a retrograde movement of the switching element 12 out of the bag groove 25 to ensure that the switching element 12 into the dwell 26 is moved, a magnetic force acts on the switching element 12 such that this is in the region of the position according to 4B and 4C down is withdrawn. This will avoid the switching element 12 accidentally in the approach channel of the switching curve 23 is moved back. The power of the magnet 22 can be dimensioned small, so that only the weight of the switching element 12 is compensated. Due to the low forces of the magnet 22 become the frictional forces of the switching element 12 only slightly increased. After triggering, the switching element 12 over the run-up slope 28 and the bag groove 27 in the outlet area of the switching curve 23 guided. Furthermore, by the magnet 22 causes the switching element 12 at a third turnoff 31 safely in the outlet area of the switching cam 23 arrives.

In the area of the second branch 29 is also a magnet 22 in the case 21 inserted to the switching element in the in 4A to move upwards. This will ensure that the switching element 12 in the entry channel at the junction 29 is moved and not accidentally the lower channel of the switching curve 23 arrives.

In the 5A to 5E is the case 21 with the switching curve 23 shown, wherein two spaced-apart openings 30 for receiving in each case a permanent magnet 22 are provided.

In 6 is the assembly of the rod-shaped magnets 22 shown in the openings 30 on the housing 21 be inserted.

In the embodiment shown, two magnets 22 used as permanent magnets. Of course it is also possible, controllable electromagnets to guide the switching element 12 provided. Further, it is possible the switching element 12 even equipped with magnets, which then in the range of branches 24 and 29 ensure safe guidance.

1

drawer

2

wall element

3

Side wall

4

retaining element

5

Locking device

6

guide rail

7

middle rail

8th

runner

9

guide element

10

takeaway

11

head Start

12

switching element

13

head

14

The End

15

casing

17

compression spring

18

pole

19

end

20

ball head

21

casing

22

magnet

23

switching curve

24

First diversion

25

blind groove

26

catch recess

27

blind groove

28

starting slope

29

Second diversion

30

opening

31

third diversion

32

outlet

35

feather

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 743032 [0002]
• - EP 1845821 [0003]

Claims (10)

Detent fitting, in particular for mounting on a pullout guide, with a switching element ( 12 ), along a switching curve ( 23 ) is movable, wherein the switching element ( 10 ) in a closed position on the switching cam ( 23 ) is latched and via a spring ( 35 ) is biased in the latched position, wherein at the switching curve ( 23 ) at least one branch ( 24 . 29 . 31 ) for the switching element ( 12 ), characterized in that the switching element ( 12 ) in the area of the branch ( 24 . 29 . 31 ) via a magnet ( 22 ) is acted upon in one direction with a magnetic force. Detent fitting according to claim 1, characterized in that the magnet ( 22 ) on a housing ( 21 ) of the switching curve ( 23 ). Detent fitting according to claim 1 or 2, characterized in that on the switching curve ( 23 ) at least two branches ( 24 . 29 . 31 ) and at each branch ( 24 . 29 ) a magnetic force on the switching element ( 12 ) acts. Detent fitting according to one of claims 1 to 3, characterized in that the switching element ( 12 ) comprises a magnetizable material. Detent fitting according to one of claims 1 to 4, characterized in that the magnet ( 22 ) adjacent to the branch ( 24 . 29 ) is arranged and on the switching element ( 12 ) has an attractive effect. Detent fitting according to one of claims 1 to 5, characterized in that the magnet ( 22 ) is designed as a permanent magnet. Detent fitting according to one of claims 1 to 5, characterized in that the magnet ( 22 ) is designed as a controllable electromagnet. Detent fitting according to one of claims 1 to 7, characterized in that the magnet ( 22 ) is rod-shaped and in a receptacle ( 30 ) in the housing ( 21 ) is inserted. Pull-out guide, in particular for a drawer, characterized in that a running rail ( 8th ) of the pullout guide is coupled to a detent fitting according to one of the preceding claims. Pull-out guide according to claim 9, characterized in that the running rail ( 8th ) via a driver with the switching element ( 12 ) can be coupled.