JP5747288B2 - Automatic retractor and drawer guide - Google Patents

Description

  The invention has an automatic retracting device for movable furniture parts according to the preamble of claim 1 and an automatic retracting device for drawers, sliding doors, furniture drawers or similar objects according to the preamble of claim 10. Concerning the drawer guide.

  Automatic retractors and drawer guides of the type described above are known in many embodiments from the prior art. The automatic retraction device essentially comprises a force accumulator located in a housing fixed to a guide rail fastened to the furniture body so that a drawer, furniture drawer or similar can be withdrawn from the closed position. The force accumulator is tensioned by coupling of the automatic retractor to the actuating body, the actuating body is fastened to the slide rail, and the slide rail is fastened to the drawer, furniture drawer, or the like. At the same time, it can move on the guide rail.

  In this type of automatic retractor, depending on the intended use and equipment of the automatic retractor, a special force accumulator, generally formed as a tension spring having a specific spring constant, is desired for the automatic retractor. Must be selected to get the function of. Thus, for example, an automatic retraction device attached to a relatively heavy drawer is provided with a tension spring having a larger spring constant so that such a drawer with a relatively large mass can be retracted to its closed position. There must be. If the automatic retracting device has a further braking function, in this case a tension spring having a correspondingly larger spring constant must be attached to the automatic retracting device so that the braking force against automatic retracting can be compensated. Don't be. In an automatic retracting device without a braking function, a tension spring having a smaller spring constant can be used accordingly.

  The need to provide such a variety of different force accumulators on an automatic retractor that is installed for a variety of intended purposes results in relatively high storage costs. Further, a tension spring having a particularly large spring constant may be attached only to a mechanism to which the tension of the automatic retracting device is applied when the automatic retracting device is mounted. This is because otherwise the housing of the automatic retractor may be damaged due to the high tension of the tension spring.

  In order to solve the above-mentioned problem, it is already known from German Utility Model No. 202004000840 that a tension spring is provided at one end of the adjusting element, so that the pretension of the tension spring is set according to the usage. It can be adapted to various usages.

  It is an object of the present invention to provide an automatic retractor for moving furniture parts and a drawer guide having an automatic retractor that is suitable for various intended purposes at a structurally simple cost.

  This object is achieved by an automatic retracting device for movable furniture parts according to the features of claim 1 and by a drawer guide according to the features of claim 10.

  According to the invention, the functional length of the force accumulator can be adjusted by means of at least one fixing element that is divided into at least two segments and can be releasably locked to the housing. By manipulating the functional length of the force accumulator, the restoring force of the force accumulator is achieved by changing the deflection distance of the force accumulator in a structurally simple manner. This has the advantage that the restoring force of the force accumulator can be adapted according to the usage by simply moving the fixing element.

  Advantageous embodiments of the invention are the subject of the dependent claims.

  According to an advantageous refinement, the individual segments of the force accumulator are separated from each other by at least one holding part, and the fixing element or one of the fixing elements engages at least one of the holding parts. . Thus, the holding part and the fixing element are formed so that a simple and reliable locking of the force accumulator is possible.

  According to a further refinement, a further holding part is provided at least at the end of the force accumulator remote from the driver. Therefore, it is possible to lock the force accumulator in the “transfer position” in a simple way, in which case the functional length of the force accumulator is maximized, so that the pre-tension of the force accumulator allows the housing of the automatic retractor The load on is minimized. Thus, it is further possible to have already installed the force accumulator in the housing of the automatic retracting device when the automatic retracting device is installed.

  According to a preferred refinement, the force accumulator is divided into three segments, so that the force accumulation is first for automatic retraction with braking and second for automatic retraction without braking. The functional length of the device can be set optimally, and thirdly, the force accumulator can be locked so that the full length of the force accumulator can be used as the functional length.

  According to an improved embodiment of the invention, the fixing element is implemented as a plug-in element and / or a capture element, thereby enabling a particularly easily movable lock of the force accumulator to the housing.

  In particular, at least one catch recess is provided in the housing for receiving a catch lug formed in the fastening element, which allows a structurally simple and reliable fastening of the fastening element and thus the force accumulator to the housing. Become.

  Application of the automatic retracting device according to the invention for sliding doors is also conceivable. Further, the automatic retracting device can be arranged on the slide rail, and the operating body can be arranged on the guide rail.

  Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Fig. 4 shows a perspective view of an improved embodiment of the drawer guide. Fig. 2 shows a perspective view of an improved embodiment of the automatic retracting device according to the present invention. Fig. 2 shows a perspective view of an improved embodiment of the automatic retracting device according to the present invention. Figure 4 shows a plan view of the automatic retractor of Figures 2 and 3 with the maximum functional length of the force accumulator. Figure 4 shows a plan view of the automatic retractor of Figures 2 and 3 with the maximum functional length of the force accumulator. Figure 4 shows a plan view of the automatic retractor of Figures 2 and 3 with the maximum functional length of the force accumulator. FIG. 4 shows a perspective view of the automatic retractor of FIGS. 2 and 3 with a reduced functional length of the force accumulator. FIG. 4 shows a perspective view of the automatic retractor of FIGS. 2 and 3 with a reduced functional length of the force accumulator. Figure 4 shows a perspective view of the automatic retractor of Figures 2 and 3 with a minimum functional length of the force accumulator. Figure 4 shows a perspective view of the automatic retractor of Figures 2 and 3 with a minimum functional length of the force accumulator. A detailed view of the force accumulator is shown. 12 shows a greatly enlarged view of the details of the force accumulator of FIG. FIG. 6 is a view of a securing element inserted into an automatic retractor for securing a force accumulator. FIG. 6 is a view of a securing element inserted into an automatic retractor for securing a force accumulator. 2 shows a graph with various tension spring characteristic curves.

  In the following description of the figures, terms such as up, down, left, right, front, back, etc., exclusively indicate typical viewing directions and positions of the automatic retractor and other parts selected in the respective figures. . These terms are not to be understood as limiting. That is, these criteria may vary due to different operating positions or specular forms.

  FIG. 1 identifies the drawer guide as a whole by reference numeral 1. The drawer guide has a guide rail 2 that can be fastened to the furniture body, and a slide rail 3 that can move on the guide rail, and optionally has an intermediate rail disposed between the guide rail and the slide rail. . An operating body 4 that engages with a driver 6 of the automatic retracting device 5 is disposed on the slide rail 3, and the automatic retracting device 5 is disposed on the guide rail 2.

  The automatic retracting device 5 shown in FIGS. 2 to 10 essentially comprises a two-part housing 7, 8 in which a force accumulator 10, preferably formed as a tension spring, is arranged. Is done. One end 14 of the force accumulator is coupled to a tensioning mechanism for applying pretension to the force accumulator 10. This tensioning mechanism has a driver 6 which is arranged on the housing 8 so that it can move. The driver 6 is inserted into the carriage rail of the housing 8 in an installed state and is actuated on the slide rail 3. It has an operational link to the body 4.

  As shown in FIG. 3, the end of the force accumulator 10 away from the driver 6 is fixed to the housing 7 via, for example, a fixing element 20 that is removably locked to the housing 7.

  As shown also in FIGS. 11 and 12, the force accumulator 10 is divided into a plurality of segments 11, 12, 13, whereby one or more securing elements 20, between the two segments of the force accumulator 10, By engaging 21, the functional length of the force accumulator 10 can be changed. In order to more easily engage the fixing elements 20, 21 between the segments 11, 12, 13 of the force accumulator 10, holding parts 16, 17 are provided between the individual segments 11, 12, 13, respectively. The correspondingly formed fixing elements 20, 21 shown in detail in FIGS. Dimensioned to secure.

  The fixing elements 20, 21 consist essentially of a body 22 which is adapted to the housing 7, the body 22 having an opening like a mouth surrounding one of the holding parts 15, 16, 17, 18 of the force accumulator 10 on one end side. 23. The mouth-like opening 23 preferably has a semicircular base 26, which presses against the preferably cylindrical outer periphery of the holding parts 15, 16, 17, 18. A portion 25 having walls extending in parallel with each other is adjacent to the semicircular base portion 26, and an inclined portion 24 connected to the end portion side is adjacent to this portion. The holding portions 15, 16, 17, and 18 are easily inserted by the inclined portion 24.

  At least one of the side walls of the fixing elements 20, 21, preferably on both sides of the fixing elements 20, 21, the fixing elements 20, 21 can be locked into the catching recess 9 of the housing 7 after being inserted into the housing 7. It is preferred that a catch lug 27, preferably formed as a plug and / or catch element, is formed. The recess 9 of the housing 7 is arranged according to the positioning of the holding part of the force accumulator 10.

  According to a preferred refinement, the fixing element 20 is used to fix the force accumulator 10 at the end of the housing 7 remote from the driver 6. Therefore, the force accumulator 10 is fixed to the housing 7 so that the functional length of the force accumulator 10 is maximized and the restoring force of the force accumulator 10 is minimized accordingly. Such a fixing of the force accumulator 10 is particularly recommended during the pre-installation of the automatic retracting device 5 in which the housings 7, 8 of the automatic retracting device 5 are not yet mounted on the guide rails 2 of the drawer guide 1.

  If the automatic retracting device 5 is adapted to be installed without a further braking unit that brakes the automatic retracting operation, the second fixing element 21 is used in the intermediate holding part 17, so that force accumulation is achieved. The functional length of the vessel 10 is reduced by the length of the segment 13. By arranging the fixing element 21 in the holding part 17 in this way, the maximum restoring force achievable by the force accumulator 10 is increased.

  If the automatic retraction device 5 is provided with a further braking device, the fixing element 21 is preferably arranged on the holding part 16, so that the functional length of the force accumulator 10 is minimized. Is done.

  The core concept of the present invention is clear even based on the graph shown in FIG. The solid line shows the restoring force curve of the tension spring according to the deflection of the tension spring. The line in the figure, interrupted by one short stroke, shows the effect of the restoring force by changing the pretension F1 of the tension spring. The spring constant remains equal to the solid line. The line interrupted by two short strokes shows the effect of the restoring force of the tension spring caused by the tension spring segmentation. The initial pretension is maintained in the same way as a typical spring, but the restoring force that can be achieved is increased by shortening the functional length of the tension spring with uniform deflection, so in a simple manner, By adapting the functional length of the force accumulator 10, the automatic retractor 5 with the segmented force accumulator 10 can be used for various purposes.

DESCRIPTION OF SYMBOLS 1 Pull-out guide 2 Guide rail 3 Slide rail 4 Actuator 5 Automatic drawing-in device 6 Driver 7 Housing 8 Housing 9 Capturing recessed part 10 Force storage 11 Segment 12 Segment 13 Segment 14 Force storage end 15 Holding part 16 Holding part 17 Holding Part 18 holding part 19 force accumulator end 20 fixing element 21 fixing element 22 main body 23 opening 24 inclined part 25 part 26 semicircular base part 27 capture lug F1 pretension F2 restoring force

Claims (10)

Housings (7, 8);
At least one force accumulator (10) arranged in the housing (7, 8) and capable of being tensioned when the movable furniture part is opened;
Using the driver (6) operatively connected to the at least one force accumulator (10) and arranged to be movable on the housing (7, 8) , the at least one force A tension applying mechanism for applying pretension to the accumulator (10);
In the automatic retractor (5) for movable furniture parts having
The at least one force accumulator (10) is provided between at least two segments (11, 12, 13) and at least one holding part (16, 17) separating the segments from each other. has bets, by the holding portion (16, 17) in engagement match that fixed elements of said housing said force accumulator is possible lock removably (7,8) (10) (2 1) , functional length of the force accumulator (10) is at least one feature only adjustable der Rukoto length of the said segments, the automatic retraction device (5).   The automatic retractor (5) according to claim 1, characterized in that the force accumulator (10) is formed as a tension spring (10). Additional holding portion on the end portion (18) is provided before the SL driver the force accumulator away from (6) (10), the said further holder (18), said housing (7,8) characterized Rukoto can be removably engaged further fixing element (20) that can be locked, the automatic retraction device as claimed in claim 1 or 2 (5). The force accumulator (10) is fixed to the housing (7) using the further fixing element (20) at its end remote from the driver (6). 3. Automatic retractor (5) according to 3. Said force accumulator (10) is characterized Rukoto which have a three segments separated by two of said holding portion (16, 17) (11, 12, 13), one of the claims 1 to 4 The automatic retracting device (5) according to claim 1. 6. Automatic retraction device (5) according to any one of the preceding claims, characterized in that the fixing element ( 21) is formed as a plug-in element and / or a capture element. To receive the capture lug (27) formed in said fixed element (2 1), wherein at least one capture recess (9) is provided in the housing (7), of the preceding claims Automatic retraction apparatus (5) as described in any one of Claims. To receive the capture lug (27) formed on both sides of the fixing element (2 1), that at least a pair of capture recesses (9) are arranged opposite to each other is provided in the housing (7) 7. Automatic retraction device (5) according to claim 6, characterized in. To increase the restoring force which can achieving, the front Kiho lifting unit (16, 17) the fixing element for engaging the (21) the force accumulator using the function length (10) is shortened 9. Automatic retractor (5) according to any one of the preceding claims, characterized in that   A drawer guide (1) having an automatic retracting device (5) for drawers, furniture drawers or the like, which can be fastened to the main body of the furniture, the automatic retracting device (5) being fastened A guide rail (2) and a slide rail (3) that can be fastened to a drawer, furniture drawer, or the like, and to which the operating body (4) is fastened to control the automatic retracting device (5) A drawer guide (1), comprising an automatic retracting device (5) according to any one of the preceding claims.

Images