WO2010066608A1 - Automatic retraction apparatus and pull-out guide - Google Patents

Abstract

Automatic retraction apparatus (100, 200, 300, 400) for a pull-out rail-guided moving furniture part, having - a base body (101, 201, 301, 401), - an energy store which is arranged on the base body (101, 201, 301, 401) and is subjected to tension when the moving furniture part is opened, and the stored energy of which energy store can be used during the closing process as a retraction aid for retraction into the final closed position, - a tensioning mechanism for pretensioning the energy store, which tensioning mechanism is coupled to the moving furniture part up to a predetermined opening position and is automatically decoupled after said specific opening position is exceeded and blocks the tensioned energy store in this position, wherein the tensioning mechanism has two drivers (109, 113, 207, 208, 305, 306, 405, 406) which are coupled to the energy store and synchronously block or activate the tensioning mechanism, and which can be guided separately by respective pull-out rails. The invention also describes a pull-out guide (1) for drawers, pull-out furniture components or the like.

Description

 Self-closing device and pullout guide

The present invention relates to a self-retracting device for a rail-guided movable furniture part according to the preamble of claim 1, as well as a drawer guide for drawers, furniture drawer or the like according to the preamble of claim 13.

Self-closing devices and such having pull-out guides are known in many embodiments.

The self-closing devices serve to reliably pull a drawer-guided movable furniture part into a closed position. In particular, in furniture parts which are mounted on a so-called "full extension" movable on a furniture body, the control of the running of the profiles of the extract, that is, the mutual displacement of running rail, center rail and guide rail is a problem in such a way that it is due to very difficult in the movable furniture part inserted objects due to misalignment of the profiles each other comes to jamming of the extract.

The previously known self-closing devices and drawer guides have the further disadvantage that the operating forces that are necessary to bias such a self-closing device must be very large and the user of such a movable furniture part can therefore only with great effort take off the furniture part of the body.

The object of the present invention is therefore to improve the control of the sequence of the sequence of the profiles of the drawer and to improve the ease of use of a equipped with a self-closing device furniture part, This object is achieved by a self-closing device with the features of claim 1 and by a pullout guide with the features of claim 13.

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

According to the invention, the self-closing device has a tensioning mechanism with two carriers coupled to at least one energy accumulator and synchronously blocking or activating the tensioning mechanism.

By installing such a self-closing device according to the invention a coordinated running of the profiles of the drawer is possible. A possible misalignment is effectively prevented by the synchronous blocking or activation of the energy storage by the driver.

According to a further embodiment of the invention, the energy accumulator is designed in the form of springs, which are each locked at a first end to the Gmndkörper and at the second end to a driver. By this arrangement, the tension springs are arranged parallel to each other, so that in the extension direction a

To bias the energy accumulator only one of the spring constant of the tension springs corresponding force must be used, whereby the ease of use is significantly increased.

Preferably, the drivers are arranged with one on the base body

Coupled damper, by means of which shortly before reaching the final closed position, one of the direction of the closing forces counteracting and the closing movement damping counterforce is applied. The dampers ensure that the pull-out rails coupled to the self-closing device are pulled into the closed position at low speed so that no disturbing noise is produced when the pull-out rails move against a stop.

According to a further embodiment of the invention, in each case a damper is arranged on opposite surfaces of the base body, which is coupled to at least one of the drivers. This allows the at least one of the drivers is coupled. This makes it possible that the damping function on the guide rail and on the running rail is individually adjustable.

Preferably, the drivers are coupled together via a gear control. As a result, a reliable coupling of the movement of the coupled with the respective carriers extension rails is possible.

According to an alternative embodiment of the invention, each of the driver is coupled with a longitudinally displaceable along the body held Veπϊegelungssteg, each of the drivers blocked in its blocking position the locking web of the other driver. This prevents that the self-closing mechanism is already activated when only one of the drivers is activated by the movement of the extension rail coupled to it before the other extension rail has reached the triggering point for activating the self-closing device.

By fixing the self-closing device to the middle rail of a drawer slide for drawers, furniture drawer or the like, a coordinated movement of the center rail in the guide rail and the running rail on the middle rail is made possible.

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

FIG. 1 is a perspective view of a first embodiment of a self-retraction device according to the invention;

FIG. 2 is an exploded perspective view of the self-retracting device of FIG. 1; FIG. 3 is a perspective view of a second embodiment of a self-retracting device according to the invention;

FIG. 4 shows an exploded perspective view of the self- ^closing device of FIG. 3, FIG. 5 shows a perspective illustration of a further embodiment of a self-retraction device according to the invention,

6 shows a perspective exploded view of the self-retracting device from FIG. 5, FIG. 7 shows a perspective view of a further embodiment variant of a self-retracting device according to the invention,

FIG. 8 is an exploded perspective view of the self-retracting device of FIG. 7;

FIGS. 9 and 10 different perspective views of an embodiment variant of a drawer slide according to the invention,

11 is a plan view of the pullout guide of Figures 9 and 10, Figure 12 is a rear view of the pullout guide of Figure 9 and 10, Figure 13 is a front view of the pullout guide of Figure 9 and 10,

FIG. 14 shows a further perspective view of the drawer guide from FIGS. 9 and 10,

FIGS. 15, 16 perspective views of the drawer slides from FIGS. 9 and 10 in different positions,

Figures 17-20 further perspective views of the pullout guide of Figures 9 and 10.

FIGS. 1 to 8 show different embodiment variants of a self-retracting device 100, 200, 300, 400 for a movable furniture part that is led out of the rail, in particular for drawers, furniture drawer or the like. All of these self-closing devices 100, 200, 300, 400 have a base body, 101, 201, 301, 401, one arranged on the main body 101, 201, 301, 401

Power storage, which is tensioned when opening the movable Möbeϊteils and the stored power is used during the closing process as Einziehshilfe in the final closed position, and a clamping mechanism for biasing the force accumulator, which is coupled to a predetermined opening position with the movable furniture part and after exceeding the said agreed opening position is automatically decoupled and blocked in this position the tensioned energy storage. Erfϊndungsgemäß know the clamping mechanism two coupled to the energy storage and the clamping mechanism synchronously blocking or activating driver 109, 1 13, 207, 208, 305, 306, 405, 406 on.

In the embodiment variant shown in FIGS. 1 and 2, the self-retraction device 100 essentially consists of three components, namely a base body 101 which is formed on an upper side and on an underside with latching hooks 17, 118 and two identical housings 104, 105, which in each case can be latched to the latching hooks 1 17, 118, wherein in the housings 104, 105 in each case a driver 109, 1 13 is mounted. These housings 104, 105 are open at one of their side surfaces. From this open side of the respective housing 104, 105 in each case protrudes the carrier 109, 1 13 mounted in the housing. The drivers 109, 1 13 are formed on their side projecting out of the housing 104, 105 in such a way that they can be coupled with an activator 7, 8, as shown by way of example in FIG. 15, so that they move out of a movable furniture part be moved out of its closed position in the housing 104, 105. The main body 101 is attached to the center rail 4. The activator 7 is arranged on the running rail 3 and the activator 8 on the guide rail 5.

At the drivers 109, 113 are stored as power storage two tension springs, not shown in the figures 1 and 2, whose other ends are fixed to the main body 101 in the receptacles 121. Thus, when pulling out a movable furniture part from its closed position both tension springs are stretched simultaneously. To lock these clamping positions, the drivers 109, 1 13 in L-shaped slotted guides 1 12, 1 16 in the housings 104, 105 via provided on the drivers guide pins 110, 1 11, 114, 1 15 out. The protruding guide pin 114 engages in an opening 122 of a rack 107 and the protruding guide pin 111 engages in an opening 123 of a rack 106 a. Once the the short L-piece of the slide guides 1 12, 116 closer guide pin 1 10, 1 15 of the driver 109, 113 are pushed into the short L-piece of the slide guides 1 12, 116, the drivers 109, 1 13 tilted into the housing 104, 105 in such a way that the activators 7, 8 coupled to the drivers 109, 1 13 are decoupled from the drivers 109, 1 13, so that the running rail 3 connected to the activator 7 is decoupled State is displaced in the direction of its maximum opening position, while the energy storage is completely fixed clamped. At the same time, the middle rail 4 is moved together with the running rail 3 relative to the guide rail 5 coupled to the activator 8. The energy store associated with the activator 8 is therefore likewise completely tensioned and fixed. If the running rail 3 is moved back into its closed position, the coupling between the activator 7 and the driver 1 13 and the coupling between the activator

8 and the driver 109 restored, so that now the stored force of the energy storage can be used as Einziehhilfilfe the movable furniture part in its final closed position. Only when both activators 7, 8 with the drivers 109, 1 13 are engaged again, the system triggers and the Selbsteinzugsvorrichtung 100 is effective and thus causes a closing of the

Pull-out guide 1. Thus, a running error in the form of a cage offset effectively eliminated or prevented.

In one embodiment variant, the drivers are additionally coupled to a respective damper 102, 103 arranged on the base body, by means of which it is shortly before

Reaching the final closed position one of the direction of the closing forces counteracting and the closing movement damping counter force is applied.

The main body 101 is fixed to the center rail 4. The housing 104 is fixed on the base body 101 via the latching hooks 17 on the main body 101 and the housing 105 via the latching hooks 1 18. In the slot 120 in the base 101, the driver 109 associated with and on the protruding guide pin 1 1 1 of the opening 123 in the rack 106 connected to the rack 106 is slidably guided. In the slot 119 in the base 101, the driver 113 associated and connected via the protruding guide pin 114 of the opening 122 in the rack 107 toothed rack 107 is slidably guided. The gear 108 is fixed to the base 101 so centrally that it in the racks 106, 107, thus synchronizing the system. The racks 106, 107 are permanently engaged with the gear 108.

The two racks 106 and 107 consist of a mounting plate, which are fastened to the respective housing 104, 105, and each one to the mounting plate vertical toothed web, wherein the toothed webs of the racks 106, 107 facing each other, so that the Gear 108 can engage simultaneously in both racks 106, 107. This ensures that a displacement of the driver 109 is always accompanied by a displacement of the driver 113. In the embodiment variant of the self-closing device 200 shown in FIGS. 3 and 4, both drivers 207, 208 are connected to the same damper 202. The main body 201 has in this variant at its respective ends in each case a plateau, at the edge of the drivers 207, 208 are guided. Between the two plateaus of the damper 202 is arranged. The damper 202 is (as well as the damper of the other embodiments) designed substantially as a cylinder from the bottom end face a web 210 with a fixed length and the head side in the damper 202 slidable web 209 are arranged, wherein the webs 209, 210 with respective end faces of the drivers 207, 208 facing the damper are coupled via ball and socket joints. For this purpose, on the damper 202 facing end faces of the driver 207, 208 cup-like recesses are provided, into which the spherical ends of the damper webs 209, 210 are embedded.

Each of the drivers 207, 208 is pivotable via joints with a locking web 205, 206 which is displaceably held along the base body 201

230, 231, wherein each of the drivers 207, 208 in its blocking position blocks this locking web 205, 206 of the other driver 207, 208. For displaceable mounting of the locking webs 205, 206 201 guide webs 219 are provided on the base body, which are preferably formed L-shaped and in pairs offset from each other, so that the

Locking webs 205, 206 are arranged displaceably in the base body in the longitudinal direction of the locking webs or of the base body. The locking webs 205, 206 in this case have a length which is dimensioned such that the Locking webs 205, 206 in the untensioned position in each case over the frontal edges of Grundköipers 201, on which the other driver is slidably disposed, are out and moved when moving the driver 207, 208 in its blocking position in a position in which the former protruding end of the locking web 205, 206 at the opposite end of the body 201 aligned with the front edge of the body 201. The locking web, which is coupled to the respective other driver, facing side of the driver 207, 208 is for this purpose formed with lugs 211, 214, which is a movement of the coupled with the other catch locking bar beyond the edge of the body 201 on the end faces 227th , 228 prevents as long as only one of the drivers 207, 208 has been moved from its blocking position.

The guidance of the drivers 207, 208 on the base body 201 is additionally supported by an angled groove 213, 216 on the plateaus of the main body 201, into which a respective guide pin 215 engages the drivers 207, 208.

As can be seen in particular in FIG. 4, the tension springs 203, 204, each having one end 221, 222, are fastened to latching recesses 224, 226 provided on the main body 201 for this purpose and to the respective other end 220, 223 Driver 207, 208 coupled in the recesses 217.

FIGS. 5 and 6 show another embodiment of the invention. The main body 301 of the device according to the invention is likewise arranged on the middle rail 4. The required for simultaneous triggering of Selbsteinzugsvorrichtung 301 synchronization of the engagement of the activators 7, 8 and the actuation of the driver 305, 306 takes place here via a rotatably mounted on the center rail 4 gear that is on both sides with racks engaged over the entire extension length, each on the guide rail 5 and on the

Running track 3 are fixed, (not shown). In this embodiment, the tension springs 303, 304 are formed in a length corresponding to the distance of one of the dogs 306, 305 plus the entire damper 302. The Rastaus- plus the entire damper 302 corresponds. The latching recesses 312, on each of which one end 310.313 of the tension springs 303, 304 is engaged, are in this embodiment at the front ends of the main body 301.

In the case of the variant of the self-retracting device shown in FIGS. 7 and 8, the entire self-retraction mechanism, which in turn is arranged on the center rail 4, is arranged in a base body 401, which is partially formed as a housing, comprising the damper 403 and one two tension springs 410, 41 1 and racks 407, 408 and between these racks 407, 408 arranged gear 409 encloses from three sides, wherein the open side is closed by a plate 402. For this purpose, two pins 422, 420 are arranged on the plate 402, which engage in openings on a surface of the main body 401 running parallel to the plate 402. The plate 402 further has a cylindrical pin 421 which projects perpendicularly from the plate into the interior of the housing part of the main body 401. At this cylindrical pin 421, the gear 409 is rotatably arranged. The gear 409 is continuously engaged with two racks 407, 408, which are arranged with their teeth facing each other. The upper rack 407 in the drawing is arranged between the pivotable carrier 406 and the tension spring 410. The other end of the tension spring 410 is on the body

401 attached. The lower rack 408 is coupled to the pivotable dog 405. This ensures in a simpler manner that the clamping device is always tensioned uniformly and that in the event of a blocking position of only one catch 405, the retraction aid is still blocked by the blocking position of the other catch 406, and only comes into action if both Carrier 405, 406 have stepped out of their blocking position.

In the figures 9 to 20 different views of a variant of a erfmdungemäßen pullout guide are shown. The variant shown in the figures is particularly suitable for drawers or furniture pull-outs. The with the

Reference numeral 1 designated pullout guide consists essentially of a fixable on a furniture body guide rail 5, in which a middle rail 4 engages, on the turn, for example, connectable to a drawer Running rail 3 is arranged. The self-retraction device is attached to the center rail 4. Both the guide rail 5 and the running rail 3 are each equipped with an activator 7, 8, which, as can be clearly seen in FIG. 15, are each coupled to one of the drivers 305, 306. During the relative displacement of the running rail 3 with respect to the middle rail 4 and the middle rail 4 with respect to the guide rail 5, the carriers 305 _» 306 are moved by the activators 7, 8, thereby tensioning the energy accumulator of the self-closing device 6. If a certain pull-out path is exceeded by the running rail 3 and the middle rail 4 and the guide rail 5, the carriers 305, 306 thereof are tilted away from the engagement region of the activators 7, 8 by appropriate guides and locked in this position. The running rail 3 and the center rail 4 can now be pulled out to its full extension position and the self-closing device 6 remains in a position in which the energy storage of Selbsteinzugsvorrichtung is fully stretched. The fastening angles 2, shown in FIG. 12, serve for fixing the pullout guide 1 to a furniture carcass not shown here.

If now the running rail 3 and the middle rail 4 are moved back again in the closing direction, the activators 7, 8 return to the area of the drivers 305, 306 in a certain displacement position, unlock them and thus release the energy accumulators. By the appropriate force then the running rail 3 and the center rail 4 is automatically withdrawn in the closing direction on the interaction between the drivers 305, 306 and the activators 7, 8.

LIST OF REFERENCE NUMBERS

1 pullout guide

2 mounting angles

3 track

4 middle rail

5 guide rail

6 self-closing device

7 activator

8 activator

100 self-closing device

101 basic body

102 dampers

103 dampers

104 housing

105 housing

106 rack

107 rack

108 gear

109 drivers

110 guide pin

1 11 Projecting guide pins

1 12 Slotted guide

1 13 drivers

1 14 Projecting guide pins

1 15 guide pins

1 16 Sliding guide

1 17 locking hook

1 18 locking hook

119 slot

120 slot

121 recording

122 opening

123 Opening 00 Self-closing device 01 Basic body 02 Damper 203 tension spring

204 tension spring

205 locking bar

206 Locking bar 207 Driver

208 drivers

209 footbridge

210 footbridge

211 Approach 214 Approach

216 groove

217 recess

219 guide bar

220 end 221 end

222 end

223 end

224 recess

225 guide pin 226 latching recess

227 front side

228 front side

230 joint

231 joint

300 self-closing device

301 basic body

302 dampers

303 tension spring 304 tension spring

305 drivers

306 drivers 310 end

312 recess 313 end

314 end

318 guideway

319 guideway 400 self-closing device

401 basic body

402 plate

403 damper 405 driver

406 drivers

407 rack

408 rack

409 gear 410 tension spring

411 tension spring

418 guideway

419 guideway

420 pin 421 Cylindrical pin

422 pen

Claims

claims A self-retracting device (100, 200, 300, 400) for an extending rail-guided movable furniture part, comprising - a base body (101, 201, 301, 40I) ₅ - One on the base body (101, 201, 301, 401) arranged force accumulator, which is stretched when opening the movable furniture part and the stored force during closing process as Einziehshilfe in the final closed position is available, - a clamping mechanism for biasing the force accumulator, which is coupled to a predetermined opening position with the movable furniture part and automatically decoupled after exceeding said certain opening position and blocked in this position the tensioned energy storage, characterized in that the clamping mechanism two coupled to the energy storage and the clamping mechanism synchronously blocking or activating driver ( 109, 1, 13, 207, 208, 305, 306, 405, 406), which can be guided separately from respective pull-out rails. 2. Selbsteinzugsvorrichtung according to claim 1, characterized in that as power storage two tension springs (203, 204, 303, 304, 410, 41 1) are provided, each at a first end (221, 222, 310, 313) on the base body (101, 201, 301, 401) and at a second end (220, 223, 309, 314) on one of the drivers (109, 1 13, 207, 208, 305, 306, 405, 406) are locked. 3. Selbsteinzugsvorrichtung according to claim 1 or 2, characterized in that the drivers (109, 1 13, 207, 208, 305, 306, 405, 406) with a on the base body (101, 201, 301, 401) arranged damper ( 102, 103, 202, 302, 403) are coupled, by means of which shortly before reaching the final closed position counteracting the direction of the closing forces and the Closing movement damping counterforce is applied. 4. Selbsteinzugsvorrichtung according to claim 3, characterized in that on opposite surfaces of the base body (101) each have a damper (102, 103) is arranged, which is coupled to one of the drivers (109, 1 13). 5. Selbsteinzugsvorrichtung according to any one of the preceding claims, characterized in that the drivers (109, 1 13, 405, 406) are coupled together via a gear control. 6. Selbsteinzugsvorrichtung according to claim 5, characterized in that the gear control comprises a gear and a on the base body (101, 201, 301, 401) attached rack. 7. Selbsteinzugsvorrichtung according to claim 5, characterized in that the gear control comprises a gear (108, 409) which in each case one with one of the drivers (109, 113, 405, 406) coupled to the rack (106, 107, 407, 408) intervenes. 8. Selbsteinzugs device according to one of the preceding claims 1 to 3, characterized in that each of the driver (207, 208) with a longitudinally of the main body (201) slidably held locking web (205, 206) is coupled, wherein each of the driver (207 , 208) in its blocking position blocks the locking web (205, 206) of the respective other driver (207, 208). 9. Selbsteinzugsvorrichtung according to any one of the preceding claims, characterized in that the clamping mechanism partially of a housing (104) is surrounded. 10. Selbsteinzugsvorrichtung according to claim 9, characterized in that the housing (104) has a slotted guide (1 12, 116), in which on the respective driver (109, 1 13) provided guide webs (110, 11 1, 114, 1 15) for guiding the driver (109, 113) protrude. 1 1. Self-closing device according to claim 10, characterized in that at least one slotted guide (1 12, 116) is I-shaped, so that a in the short L-piece of the slotted guide (112, 1 16) pushed guide bar (1 15) blocks the driver in this position. 12. Selbsteinzugsvorrichtung according to any one of the preceding claims 1 to 8, characterized in that at each end of the base body (201) has a Guideway (213, 216, 319, 320, 418, 419) for guiding a respective driver (207, 208, 305, 306, 405, 406) 13. Pull-out guide (1) for drawers, furniture drawers or the like, featuring a guide rail (4) which can be fastened to the body of a piece of furniture, a running rail (3) which can be fastened to a drawer, a furniture drawer or the like, - A displaceable between the guide rail (4) and running rail (3) arranged middle rail (5), characterized by a Selbsteinzugsvorrichtung (100, 200, 300, 400) according to any one of the preceding claims. 14. pullout guide according to claim 13, characterized in that the Selbsteinzugsvorrichtung (100, 200, 300, 400) is fixed to the center rail (5). 15. pullout guide according to claim 13 or 14, characterized in that on the guide rail (4) and on the running rail (3) in each case an activator (7, 8) for controlling the Selbsteinzugsvorrichtung (100, 200, 300, 400) is arranged.