ES2727330T3 - Hitch hardware and removal guide - Google Patents

Abstract

Hitching hardware, in particular for an extraction guide (1) of a drawer, with a switching curve (20) in which a switching element (10) is conducted, the switching curve (20) having at least one loop in which a coupling cavity (26) is provided for the switching element (10) prestressed in a coupling position by means of an energy accumulator (63), wherein the coupling cavity (26) is movable and / or pivoting at least in part and the switching element (10) can be unlocked from its engaged position and the engagement cavity (26) includes at least two parts (18 ', 18 ", 30', 30", 35, 40 ' , 40 ", 70, 70") movable with each other, characterized in that the movable part (30 ', 30 ", 70, 18") of the hitch cavity (26) is prestressed in the initial position by means of a spring in relation to the other part (40 ', 40 ") of the hitch cavity (26) so that, after an unlocking movement, the hitch cavity (2 6) return to the starting position again and the switching element (10) can again engage in the hitch.

Description

DESCRIPTION

Hitch hardware and removal guide

The present invention relates to a hitch fitting, in particular for a drawer removal guide, according to the preamble of claim 1, and an extraction guide.

EP 743032 A2 discloses a drawer removal guide that includes a hitch fitting. This includes a mobile mounted hitch ratchet through a controller along a switching curve. The hitch ratchet is prestressed by a tension spring. For an interlock of the coupling ratchet, a coupling housing is formed in the switching curve. From the locked position, the hitch ratchet can be moved selectively by pressing and turning in a guide path of the switching curve or the hitch ratchet is removed by means of the drawer so that a spring bar is deformed and the hook ratchet also enters the guide path of the switching curve. In this case it is disadvantageous that for the spring bar, the request for the material when removing the ratchet is high and such a construction is not suitable as protection against overloads, since if the spring bar does not move towards the Initial position after repeated deformations, the retention of the hitch ratchet becomes impossible because it lacks a correctly positioned hitch housing. In addition, the flexible spring bar can also be easily clogged, so opening is prevented by pulling the ratchet.

Document DE 112006002890 T5 discloses an extraction guide with a hitch mechanism in which a movable body is mounted in a guide block. When closing, the movable body moves out of its indifferent position and a rail of the extraction guide can be held in the body. To open the lane in the mobile body is then unlocked.

US 2009/0079205 A1 discloses a hitch mechanism in which a pin can be retained in a hitch cavity. If a large force acts on the pin, the hitch cavity can be rotated and the pin unlocked. In addition, unlocking can also be carried out by moving the pin along a guideway.

Therefore, an objective of the present invention is to create a hitch fitting for an extraction guide that allows the safe unlocking of the switching element, even in a traction movement.

Said objective is achieved by means of a coupling hardware with the characteristics of claim 1.

According to the invention, the engagement cavity of the switching curve is at least partially movable or pivotally mounted and the switching element is unlocked from the interlocking position, preferably in the case of an overload. As a result, deformation and solicitation of the material of the hitch cavity which is movable or pivotally mounted and, therefore, allows the unlocking of the switching element is avoided. This gives the user the alternative of unlocking the hitch hardware, either by inserting the extraction guide or by the drawer or by traction. Even after a large number of unlocks through traction movements, the hitch cavity retains functionality. A pivot means turning around a spatial axis, moving a translation. These two movements can also overlap.

According to the invention, the engagement cavity includes at least two relatively movable parts with each other. In this case, the movable part of the hitch cavity is prestressed to an initial position by means of a spring. This ensures that after an unlocking movement, the engagement cavity returns to the initial position so that the switching element can re-engage in the engagement cavity.

To move the hitch cavity at least partially precisely, the movable part may be rotatably mounted on a shaft. In such a way, the movable part may include a disk in which a projection is formed as part of the engagement cavity in which a stop for the switching element is formed. The disk can then form the rotating bearing.

According to an alternative configuration, the movable part of the hitch cavity is movable movable along a linear guide. In this way, the switching element can be unlocked in a tensile load by moving the moving part.

According to another configuration, the switching element can be moved out of the engagement position by means of the movable part. In particular, the switching element can be moved by the movable part to an adjacent sector of the switching curve, so that the switching element can then move along the switching curve due to the pretension of the spring. As a result, the hitch hardware with the mobile part receives additional functionality, since the activation of the hitch hardware can take place, on the one hand, by a shift of the switching element and, on the other hand, by the mobile part. The unlocking of the coupling hardware by means of the movable part can be activated mechanically, electromechanically, magnetically or otherwise.

In addition, the switching curve may be mounted relatively displaceable with respect to the activator due to the accumulated energy load. By means of a certain adjustable force by means of the force of the energy accumulator, the switching curve can be moved in the direction of extraction beyond the extreme section. The activator is fixed by a cavity in the frame, whereby the switching curve can be moved relative to the activator. In an overload situation, a force is exerted by means of the switching element and its extreme section on the switching curve in the sector of the coupling cavity. Due to the greater contact area of the end section with the switching curve, the switching curve is displaced in relation to the activator. Thanks to its oblique contact surface, the activator causes the end section to press against the inclined stop. The switching curve moves further in the direction of extraction and the end section enters the loop-shaped sector. The ejection mechanism thus supports the opening of the translation element. After traction activation, the component with the switching curve is moved by an energy store back to the extreme position against the direction of extraction. When closing, the end section can be relocked in the hitch cavity.

In the following, the invention is described in detail in multiple embodiments with reference to the accompanying drawings. They show:

Figure 1, a perspective view of a hitch fitting according to the invention in an extraction guide; Figure 2, a perspective view of the coupling hardware of Figure 1;

Figure 3, an exploded view of the coupling hardware according to Figure 2;

Figures 4A and 4B, views of the switching curve and the switching element of the coupling hardware in different positions;

Figures 5A and 5B, two detailed views of the switching curve according to a first embodiment that does not belong to the invention;

Figures 6A and 6B, two views of the switching curve according to a second embodiment;

Figures 7A and 7B, two views of the switching curve according to a third embodiment; Figures 8A to 8C, views of the switching curve according to a fourth embodiment;

Figures 9A and 9B, a perspective and exploded view of another embodiment of a coupling hardware;

Figures 10A to 10H, views of the switching curve according to a fifth embodiment;

Figure 11, an exploded perspective view of another exemplary embodiment of a coupling hardware, and Figures 12A to 12c, various views of the attachment hardware of Figure 11 in different positions.

An extraction guide 1 includes a stationary guide rail 2 that can be mounted on a furniture body. In the guide rail 2, a raceway 3 on which an outgoing activator 17 is fixed is held in a mobile manner. Furthermore, between the guide rail 2 and the raceway 3 of an extraction guide, a central rail which extends the extraction guide can be arranged. The activator 17 can be coupled to a drag 7 that can be moved along a curvature 5 of a frame 4. Thus, the frame 4 can be fixed to the guide rail 2.

A box 6 of a spring element is fixed on the frame 4. The box 6 can be hooked to a tubing 65 that is integrally formed with the frame 4. The drag 7 is coupled to a rod 60 that is hooked in a shell-like housing by an end section 61 in the form of a thickened spherical head. On the opposite side with respect to the end section 61, the rod 60 is connected to a disk 62 on which one end of a spring 63 rests. The opposite end of the spring 63 rests on a cover 64 of the box 6. The box 6 can also be made in one piece with the cover 64 as a box 6 'according to figures 9A and 9B.

The drag 7 also has a projecting arm 8, on which a coupling element 9 is attached. The coupling element 9 is connected to a switching element 10 which is formed as a metal wire having a bent end section 11. The Bent end section 11 of the switching element 10 engages in a switching curve 20, which is integrally formed with a component 18 made of plastic. The component 18 is fixed to the frame 4 by means of a clamping element 13 For this purpose, the frame 4 has a counterpart 14 that is hooked to the clamping element 13. In the frame 4 a bottom 12 is also formed which is arranged spaced apart from component 18. This makes it possible for the wire of the switching element 10 to move between the bottom 12 and the component 18, where the bent end section 11 is engaged in the switching curve 20. In addition, the bottom 12 prevents the deviation of the bent end section 11 bent out of the switching curve 20.

The function of the switching curve 20 and the switching element 10 will be explained in more detail with reference to Figure 4.

In an initial position, a drawer coupled to the raceway 3 is in a closed position and the switching element 10 is thus maintained in the switching curve 20 in such a way that it engages. For this purpose, the bent end section 11 is located in a hitch cavity 26 of the switching curve 20 and is pressed into the hitch 26 due to the force of the spring 63 by means of the rod 60, the drag 7 and the other coupling elements. The switching curve 20 in the component 18 is in the form of a groove and includes a loop-shaped section 23.

When the drawer must be opened from this closed position (Figure 4A), the drawer is forced into the furniture body in the closing direction, so that the folded end section 11 moves against an inclined stop 28 in the switching curve 20, which causes the switching element 10 to be pivoted and engaged in a housing 27 that is arranged offset with respect to the engagement cavity 26. When the drawer 1 is released, due to the force of the accumulator in the form of a compression spring 63, the switching element 10 can now move towards the output section 29 of the switching curve 20. For this reason, in the deflection section 24, the switching element 10 first moves to housing 25 until a front panel of the drawer collides with the furniture body. Then, due to the force of the compression spring 63, the extraction guide 1 is moved back to a hitch 26, so that the position shown in Figure 4A is reached.

During a closing movement of the drawer, the switching element 10 moves along the switching curve 20 in the loop-shaped section 23 to a deflection 24 which is arranged adjacent to a slot-shaped housing 25.

The switching element 10 moves with the end section 11 folded to the housing 25 until the drawer collides with the cabinet body. Next, the user releases the drawer, so that the spring 63 moves the drawer slightly in the direction of opening together with the drag 7 and the switching element 10. By this movement, the bent end section 11 of the switching element 10 enters the hitch cavity 26, so that the initial position is reached.

Figure 5A shows in detail the section of the switching curve 20 adjacent to the grooved housings 25 and 27. The folded end section 11 of the switching element 10 is in the engagement cavity 26 which is formed by a projection 31 protruding from a disk 30. The disc 30 is rotatably mounted relative to an adjacent projection 40 of component 18 .

As shown in Figure 5B, by rotating the disc 30 counterclockwise, the switching element 10 can be unlocked by rotating the retention cavity 26 together with the disc 30, so that the end section 11 slides along the projection 31 due to the force of the compression spring 63 and passes to the loop-shaped section 23 of the switching curve 20. Thus, as shown in Figure 5A, the disc 30 may be prestressed to the initial position by means of an energy accumulator, for example in the form of a spring. In this case, the disc 30 can make contact against a stop of the component 18.

Figure 6A shows a modified embodiment of a switching curve 20 with a hitch cavity 26. On a disk 30 'a projection 31' is formed, which can rotate together with the disk 30 '. The hooking cavity 26 is formed by the movable projection 31 'and a fixed projection 41' integrally formed with the component 18. In addition, additional fixed projections 40 'are formed to form the switching curve 20.

To unlock the switching element 10, the disk 30 'can be rotated together with the projection 31', as shown in Figure 6B. Thus, a gap is formed between the projection 31 'and the projection 41' through which the bent end section 11 of the switching element 10 moves due to the force of the compression spring 63. As a result, the section end 11 again returns to the loop-shaped section 23 of the switching curve 20.

In Fig. 7A, another configuration of the switching curve 20 is shown in which the engagement cavity 26 is formed of several parts. Similar to the exemplary embodiment of Figure 6A, a disk 30 'is rotatably mounted on component 18. The hitching cavity 26 is formed by a stationary projection 41' which is integrally formed with a projection 40 ' of the component 18. A bolt-shaped shoulder 35 is provided on the disk 30 'which forms a stop for the folded end section 11 of the switching element 10. By rotating the disk 30', the bolt-shaped shoulder 35 Remove from the projection 41 ', so that the end section 11 between the projection 35 and the projection 41' can reach the loop-shaped section 23 of the switching curve 20.

In the exemplary embodiment shown in Fig. 8A, a stationary projection 40 "is formed in the switching curve 20 which, together with a movable projection 30", forms a hitch cavity. In the initial position, the end section 11 is held in the hitch cavity 26.

As shown in Figure 8B, by moving the protrusion 30 "downwards, a channel 32" can be unlocked through which the end section 11 can enter the loop-shaped section 23 of the switching curve 20. In this way Thus, the projection 30 "is movable mounted on the component 18.

The movable protrusion 30 "may, on the one hand, be configured as an overload protection to pull the switching element 10 from the drawer, and on the other hand, an activation of the switching element 10 can also take place through the outgoing 30 ". For this purpose, the projection 30 "moves in the direction shown in accordance with Fig. 8C to push the folded end section 11 of the switching element 10 out of the engagement cavity 26. The unlocking of the switching element 10 may be mechanical. , electromechanical, magnetic or by other means of activation.

Figures 9A and 9B show a hitch fitting in which a component 18 'is mounted in a relatively movable way with respect to the activator 70 in a frame 4. The component 18' is charged against the direction of extraction by means of a storage tank energy in the form of a tension spring 66. The tension spring 66 is fixed to the frame 4 by means of an end spring section 67 in the counterpart 14 and to the component 18 'by means of an additional housing of the tension spring. By a certain adjustable force by means of the force of the traction spring 66, the switching curve 20 can be moved beyond the end section 11 in the direction of extraction. By means of a cavity 71 in the frame 4 the activator 70 is fixed, whereby the switching curve 20 can be moved relative to the activator 70.

Figures 10A to 10H show the sequence in the case of an overload situation as it may occur due to manual opening without prior activation of the ejection mechanism. The arrows in Figures 10A to 10H illustrate with respect to the activator 70 the direction of movement of the component 18 'with the switching curve 20.

In an overload situation, a force is exerted by means of the switching element 10 and its end section 11 on the switching curve 20 in the area of the engagement cavity 26. Due to the greater contact surface of the end section 11 with the switching curve 20, the switching curve 20 is displaced in relation to the activator 70. Thanks to its oblique contact surface, the activator 70 causes the end section 11 to press against the inclined stop 28 (figures 10A to 10C). The switching curve 20 continues to move in the direction of extraction and the end section 11 enters the section 23 in the form of a loop. Therefore, the ejection mechanism secondes the opening of the drawer 1 coupled to the raceway 3 of an extraction guide (figures 10D to 10F). After being activated by traction, the component 18 'with the switching curve 20 moves against the direction of extraction by means of the traction spring 66 back to the extreme position. Upon closing, the end section can be relocked in the hitch cavity 26 (figures 10F to 10H).

In the hitching hardware according to the invention, the hitching cavity is formed of a movable part which, before a predetermined force, unlocks the switching element 10. In this case, the movable parts 30, 30 ', 30 "can be prestressed to an initial position by means of an energy accumulator, for example in the form of a spring. In this way, the direction of movement of the moving parts can be chosen at will, in particular the projections can also move perpendicular to the direction of movement of the switching element 10 to secure the switching element.

Figure 11 shows another embodiment of a coupling tool which, as in the other exemplary embodiments, has a frame 4 with a curve guide 5 in which a conductor 7 can be moved. The drag 7 is prestressed by means of a spring device in an opening direction, the spring device including a body 6 in which a compression spring 63 is provided that pushes a rod 60 "by means of a ring 62 in the opening direction, the rod 60 being "coupled to the drag 7 by means of an end section 61.

The drag 7 includes a projecting arm 8 to which an end section 9 'of a switching element 10 is attached. The switching element 10 is configured as a bent wire that is fixed with the end section 9' to the drag 7 and has a opposite curved end section 11 guided in a switching curve 20 which is configured in a component 18 "and a guide element 70". The guide element 70 "laterally includes two projections 72", each of which is engaged and fixed in a housing 71 "of the frame 4. The component 18" is movably mounted relative to the frame 4 and the guide element 70 ". In this way, the component 18" is prestressed by the spring 76 to an initial position, where the spring 76 is fixed with a first end 77 to a counterpart 14 of the frame 4 and at one end 78 facing the component 18 "

In Fig. 12A, the switching curve 20 is shown with the end section 11 in a hitch cavity 26, which corresponds to the closing position of a drawer coupled to the drag 7. The switching element 10 can be unlocked, as in the first embodiment, by pressure in the direction of closure, in which case the end section 11 is engaged in the housing 27 against the inclined stop 28 and moves in the opening direction due to the force of the spring 63 along the switching curve 20.

A loop-shaped section 23 of the switching curve 20 is divided, a first part of the loop-shaped section 23 being formed by the guide element 70 "and a second part by the component 18". If a force directed in FIG. 12A is applied to the switching element 11 to the right, for example by pulling a drawer, the component 18 "moves to the right against the force of the spring 76, as shown in the Figure 12B. Guide element 70 "remains stationary due to coupling with frame 4.

If the switching element 10 continues to move by pulling in the opening direction, the position shown in Figure 12C is achieved. The component 18 "has been moved along a path between, for example, 5 mm to 30 mm in the opening direction, so that the switching element 11 is arranged in an unlocking channel 79 of the guide element 70". As a result, the switching element 11 can be moved through the release channel 79 to the loop-shaped section 23 and to the output section 29 immediately after. As soon as the tensile force ceases to act by means of the switching element 11 on the component 18 ", the component 18" returns to the initial position due to the force of the spring 76. Thus, the spring 76 is fixed with the end section 78 to housing 75 of component 18 ". In the initial position, component 18" contacts against a stop of frame 4 or guide element 70 ".

Reference List

1 extraction guide

2 guide rail

3 raceway

4 rack

5 curve guide

6 body

6 'body

7 drag

8 outgoing arm

9 coupling element

9 'extreme section

10 switching element

11 extreme section

12 background

13 fixing element

14 counterpart

17 activator

18 component

18 'component

18 "component

20 switching curve

23 loop section

24 detour

25 outgoing

26 hitch cavity

27 accommodation

28 inclined stop

29 output section

30 disc

30 'disk

30 "outgoing

31 outgoing

31 'outgoing

32 channel

32 'channel

32 "channel

35 outgoing

40 outgoing

40 'outgoing

40 "outgoing

41 outgoing

41 'outgoing

60 rod

60 "rod

61 spherical head end section

disk / ring

Compression spring

top

tubing

tension spring

traction spring end section activator

"guide element

cavity

" accommodation

"'outgoing

accommodation

spring

extreme

extreme

unlock channel

Claims (9)

1. Hitching hardware, in particular for an extraction guide (1) from a drawer, with a switching curve (20) in which a switching element (10) is conducted, presenting the switching curve (20) to the less a loop in which a hitch cavity (26) is provided for the switching element (10) prestressed in a hitch position by means of an energy accumulator (63), wherein the hitch cavity (26) is movable and / or pivoting at least in part and the switching element (10) can be unlocked from its engaged position and the engagement cavity (26) includes at least two parts (18 ', 18 ", 30', 30", 35, 40 ', 40 ", 70, 70") movable with each other, characterized in that the movable part (30', 30 ", 70, 18") of the hitch cavity (26) is prestressed in the initial position by means of a spring with respect to the other part (40 ', 40 ") of the hitch cavity (26) so that, after an unlocking movement, the hitch cavity (26) return to the initial position and the switching element (10) can again engage in the hitch. 2. Hitch fitting according to claim 1, characterized in that the movable part (30 ') is rotatably mounted on a shaft. 3. Hitch fitting according to claims 1 or 2, characterized in that the movable part (30 ') includes a disk in which a projection (31, 31', 35) is formed as part of the hitch cavity ( 26). 4. Hitch fitting according to one of claims 1 to 3, characterized in that the movable part (30 ", 70, 18") is movable along a linear guide. 5. Hitch fitting according to one of claims 1 to 4, characterized in that by means of an overload, the switching element (10) is unlocked from the hitch cavity (26). 6. Hitch fitting according to one of claims 1 to 5, characterized in that by means of a force action in the direction of removal, the switching element (10) is unlocked from the hitch cavity (26). 7. Coupling hardware according to one of claims 1 to 6, characterized in that by means of the passage of an unlocking channel (79), the switching element (10) is unlocked from the coupling cavity (26). 8. Coupling hardware according to one of claims 1 to 7, characterized in that after the unlocking of the switching element (10) through the passage of the unlocking channel (79), the movable part (18 ") is moved from again to the locking position of the hitch cavity (26) by the action of an energy accumulator (76). 9. Extraction guide, in particular for a drawer, characterized in that a hitch fitting according to one of the preceding claims is mounted on the extraction guide.