WO2010043334A1 - Retraction device - Google Patents

Abstract

The invention relates to a retraction device for sliding doors, drawers, etc, comprising a damping device and a spring, which both act directly or indirectly upon a receiving element, wherein the receiving element is movable between a retracting position and a free-running position. In order to ensure reliable and secure damping of structural units having a high moved mass, the invention provides that the damping device comprises two dampers, the damping effect of which acts in series upon the receiving element, or that the damping device comprises two dampers, the damping effect of which acts in parallel upon the receiving element. These embodiments ensure in particular small installation volumes for the retraction device.

Description

 retraction device

The invention relates to a collection device for sliding doors, school bathing, etc. with a damping device and a spring, each of which acts directly or indirectly on a pickup, wherein the pickup between a feed position and a freewheeling position is movable.

Such a collection device is known from A 766/89. They are used there to draw drawers in the closed position. In this case, the collection device acts in the last part of its closing movement on the drawer and the spring pulls the drawer. In order to prevent a strong impact of the drawer in the closed position, the damping device counteracts the effective direction of the spring. The collection device is also used for example in sliding doors, wherein the sliding door is then pulled into the closed position. Now, if the moving unit (drawer, sliding door, etc.) has a high mass, the damping device must provide a high damping force to reliably reduce the kinetic energy on the relatively short damping path. However, this leads to the moving unit being braked abruptly, which is distracting. It has therefore begun to extend the attenuation paths of the dampers used in the damping device. However, this led to damper failures due to the then occurring mechanical instability. A 5 massive dimensions of the damper is undesirable for reasons of space.

It is an object of the invention to provide a collection device of the type mentioned above, with the units can be reliably attenuated and recovered with high moving mass and the tight space available space volume 10 is taken into account.

This object is achieved according to a first alternative of the invention in that the damping device comprises two dampers whose damping effect act in series on the transducer.

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The two dampers thus act on the transducer so that their available damping paths at least partially add up. This extends the entire damping path. The deceleration of the moving assembly can thus be done over a longer way and the kinetic energy so continuously

> 0 are removed. As a damper small, stable units can be used. Thus, a sufficient mechanical stability of the entire system can be guaranteed without the permissible space limits are left.

> 5 According to a preferred embodiment of the invention, it may be provided that the dampers are coupled to a displaceable actuator. About the actuator, the two dampers can be reliably coupled to each other in a simple manner. If it is provided that the adjusting element is linearly adjustable in a sliding guide of a housing, then the sliding guide Actuator and thus the entire damping device additionally mechanically stabilized.

A particularly preferred embodiment of the invention may be characterized in that the dampers are designed in the form of fluid dampers with a cylinder and a piston adjustable therein, in that a piston rod is coupled to the piston, and in that the piston rods of the dampers are displaceable in opposite directions. The dampers are already in use as reliable components and can be obtained inexpensively. In addition, a simple design can be realized with the predetermined displacement paths of the piston rods. It can be provided that the piston rods are parallel to each other adjustable.

A reliable power transmission between the transducer and the housing can be created by coupling one damper to the transducer and the other damper to a housing-side mounting.

According to a second embodiment of the invention, it may be provided that the damping device comprises two dampers whose damping effect acts in parallel on the transducer. In this embodiment, the damping effects of the damper add without the space of the feeder is thereby significantly increased. In particular, depending on the geometry of the available construction space, the dampers can be grouped together in such a way that they are optimally utilized.

A simple and mechanically stable construction results from the fact that the dampers are designed in the form of fluid dampers with a cylinder and a piston adjustable therein, that a piston rod is coupled to the piston and that the piston rods of the dampers act in the same direction, to - may be provided that both dampers are coupled by means of pivot bearings to the transducer.

In order to ensure reliable operation of the pickup in the feed device according to the invention, it is conceivable that the pickup is adjustable in a guide between the retraction position and the freewheeling position, and that the guide has a parking section in which the transducer relative to its orientation in the retraction position is tilted.

If it is provided that the damper or the damper is rotatably coupled to the transducer is / are, and that the spring is spaced from the bearing coupled to the transducer, then acting on the transducer torque. This can be used to move the pickup in the free-running position. To reduce the expenditure on parts, it can be provided that identically constructed dampers are used.

The invention will be explained in more detail below with reference to exemplary embodiments illustrated in the drawings.

Show it:

Figure 1 shows a first alternative of a collection device in perspective view;

Figures 2 to 4, the retraction device shown in Figure 1 in several functional positions and in each case in side view;

Figure 5 shows a second alternative of a collection device in perspective and Figures 6 to 7, the intake device according to Figure 5 in several functional positions and in each case in side view.

1 shows a collection device with a housing 10. The housing 10 has a side wall 11, to which wall parts are connected on all sides. The side wall 11 and the wall parts enclose a receiving space, which can be closed with a lid (not shown). The lid has a wall which is parallel to the side wall 11. The cover and the housing 10 have mutually aligned screw receptacles 16. Through this fastening screws can be passed and the collection device to a wall of a carcass, a drawer, a sliding door, etc. are screwed.

In the receiving space of the housing 10, a damping device is installed. This comprises an actuating element 20 and two identical dampers 30. The actuating element 20 is designed in the form of a slide which is linearly displaceable in the housing 10. For this purpose, the housing 10 is equipped with a sliding guide 14. This is formed by the side wall 11, the wall of the lid the upper horizontal edge of the housing 10 and a spring receiving 13 bounding wall 13.2. On these components, the actuator 20 can slide along with guide surfaces.

As can be seen further from FIG. 1, the adjusting element 20 is designed with two plug-in receptacles 21. In this, the cylindrical outer contours of a cylinder of the damper 30 can be inserted. The cylinders each have a circumferential groove 34 on which they are fixed immovably in the axial direction on the actuator. The dampers 30 have a piston rod 31 which is coupled to a piston. The piston is linearly adjustable in the cylinder interior against an air volume. The piston rods 31 are provided at the end with suspensions 32, the are integrally formed on the piston rods 31 in the form of material compaction. As the figure 2 is removed, the lower damper 30 is fixed with its suspension 32 in a holder 15. The upper damper 30 is connected to its suspension 32 rotatably connected to a transducer 40.

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The transducer 40 is designed as a plastic injection molded part and has two stops 41 and 43. The stopper 43 is fixed to a spring element 42 of the transducer 40. The transducer 40 carries on a boom a locking piece 44. Furthermore, the transducer 40 is equipped with a spring suspension 45 into which a spring

10 of the 60 can be hung at the end. The other end of the spring, designed as a helical spring spring 60 is fixed to a spring suspension 13.1 of the housing 10, wherein the spring 60 is disposed in the spring retainer 13. In the area of the warehouse

33, the locking piece 40 is equipped on both sides with bearing pin 46. These engage in a guide 12. The guide 12 is provided with a linear section 12.1 and a

15 park section 12.2 equipped, these areas of an angled groove

34 are formed, which is incorporated in the side wall 11 and identical mirror-symmetrically in the opposite wall of the lid. In these guides 12, the bearing pin 46 and the arranged on both sides of the transducer 40 locking pieces 44 engage.

> 0

In the figure 2, the retraction position of the collection device is shown. In this case, a (not shown) sliding door by means of a driver 51 is held in the closed position. The driver 51 is part of a fitting 50 which is attached to the sliding door. The collection device is corpusseitig, for example, on a cabinet

15 mounted.

Of course, these components can also be mounted exchanged. If now the sliding door is opened, starting from the retraction position according to FIG. 2, then the catch 51 shifts to the right with the door in the image plane and takes the receptacle 40 along with the stop 43. In this case, the locking pieces 44 and the bearing pins 46 slide in the guide 12. The spring 60 is tensioned and the piston rods 31 are pulled out of their cylinders in opposite directions until the functional position according to FIG. 3 is reached.

Then, the locking pieces 44 pass over the guide area 12.3 formed in the transition region of the linear section 12.1 and parking section 12.2, in the present case a guide edge. Since the spring 60 engages the bearing 33 at the receiver 40, a torque is generated in the clockwise direction.

This torque tilts the transducer 40 in the freewheeling position shown in Figure 4. This becomes possible because the bearing journals 46 can be rotated in the linear section 12.1 and the locking pieces 44 no longer hinder this rotation. In the tilted position of the transducer 40 is blocked with the locking pieces 44 against the feed direction positively in the parking section 12.2. The driver 51 then enters the freewheel, as Figure 4 shows, until the door is open.

When closing the door this can be moved as long as freewheel until the driver 51 strikes the stop 41. Since the stop 41 is eccentric to the storage of the position pin 46, the locking pieces 44 are excavated in the presence of the driver 51 from the parking section 12.2 (see Figure 3). The stop 43 then engages behind the driver 41. The spring 60 then pulls the driver 51 by means of the pickup 40 in the direction of the retraction position. At the same time, the dampers 30 become active. They brake the pulling movement of the spring 60. FIG. 2 again shows the retraction position in which the dampers 30 are set free of pressure. In Figures 5 to 7, an alternative embodiment of the invention is shown. While, according to FIGS. 1 to 4, the dampers 30 are connected in series, thus adding the damping paths and the damping rate corresponds approximately to the damping rate of a single damper 30, according to FIGS. 5 to 7 the damping rates are added and the damping travel corresponds to the damping travel of a single damper 30.

As FIG. 6 shows, again a housing 10 is used, which roughly corresponds to the housing design according to FIGS. 1 to 4.

In the side wall 11 and the wall of the lid, the same guide 12 is installed again. It is in the spring retainer 13, the same spring 60 used. With regard to the explanation of the same components designating reference numerals, reference is made to the above statements. In the receptacle 17 of the housing 10, two identical dampers 30 are used. The lower damper 30 is held on its groove 34 with holders 18 of the housing 10 axially immovable.

The upper damper 30 can be linearly displaced in the right direction. The dampers 30 correspond to the dampers 30 according to FIGS. 1 to 4. They are coupled to the suspensions 32 of their piston rods 31 by means of a respective bearing 33 to the transducer 40. In this case, the transducer 40 has a bearing bore which is aligned with a bearing bore of the suspension 32. Through the bearing bore a bearing pin is inserted through to form a bearing 33, wherein it is pressed into a bearing bore and rotatable in the other.

The transducer 40 corresponds in its function and mode of action to that according to FIGS. 1 to 4. Instead of the bearing journal 46, the bearing pin of the bearing 33 is guided in the guide 12. The spring element 42 is stabilized with an arm 47 opposite to the arm of the pickup 40. The operation corresponds to that of Figures 1 to 4, but with the damping device is functionally different. When opening the door of the pickup 40 is moved to the right and the piston rods 31 pulled out in parallel. After passing over the guide area 12.3, the sensor 40 tilts into the freewheel

5 position and releases the driver 51 again, as Figure 7 shows. Since the rotation of the pickup 40 takes place about the axis of rotation of the bearing 33 of the lower damper 30, the upper damper 30 is moved a little linearly in the housing 10, which is necessary due to the identical design of the damper 30. The closing movement of the door and the retraction of the driver 51 take place analogously to FIGS.

LO ren 1 to 4 with the difference that both dampers 30 are connected in parallel and at the same time act damping on the transducer 40.

L5

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15

Claims

Claims 1. Feeding device for sliding doors, school baths etc. with a damping device and a spring (60), each of which acts directly or indirectly on a pickup (40), wherein the pickup (40) is movable between a retraction position and a freewheeling position, characterized in that the damping device has two dampers (30) whose damping effect acts in series on the sensor (40). 2. Feeding device for sliding doors, school bathing etc. with a damping device and a spring (60), each of which acts directly or indirectly on a pickup (40), wherein the pickup (40) is movable between a retraction position and a freewheeling position, characterized in that the damping device has two dampers (30) whose damping effect acts in parallel on the sensor (40). 3. Feed device according to claim 1, characterized in that the dampers (30) are coupled to a displaceable actuating element (20). 4. Feed device according to claim 3, characterized in that the adjusting element (20) in a slide guide (14) of a housing (10) is linearly adjustable. 5. Feed device according to claim 1, 3 or 4, characterized in that the dampers (30) are designed in the form of fluid dampers with a cylinder and a piston adjustable therein, that to the piston, a piston rod (31) is coupled, and that the Piston rods (31) of the damper (30) are displaceable in opposite directions. 6. Feed device according to claim 5, characterized in that the piston rods (31) are parallel to each other adjustable. 7. Feed device according to one of claims 1 or 3 to 6, characterized in that a damper (30) to the transducer (40) and the other damper (30) to a housing-side support (15) are coupled. 8. Feed device according to claim 2, characterized in that the dampers (30) are designed in the form of fluid dampers with a cylinder and a piston adjustable therein, that a piston rod (31) is coupled to the piston and that the piston rods (31) of the Damper (30) act in the same direction. 9. Feed device according to claim 2 or 8, characterized in that both dampers (30) by means of pivot bearings (33) are coupled to the transducer (40). 10. Feeding device according to one of claims 1 to 9, characterized in that the transducer (40) in a guide (12) between the retraction position and the freewheeling position is adjustable, that the guide (12) has a parking section (12.2), in the the pickup (40) is tilted relative to its orientation in the feed position. 11. Feed device according to one of claims 1 to 10, characterized in that the damper (30) or the damper (30) rotatably coupled to the transducer (40) is / are coupled (bearing (33)), and that the spring ( 60) spaced from the bearing (33) to the transducer (40) is coupled. 12. Feed device according to one of claims 1 to 11, characterized in that identical identical dampers (30) are used.