EP1561398A1 - Extensible guide for drawer - Google Patents

Abstract

The drawer mounting system comprises a flat rail (102) which slides inside a U-profile rail (116). A shock absorber (166) is mounted at the end of the outer rail and has an outer casing (168) which slides along a piston (172).

Description

The present invention relates to a drawer slide, the at least one first guide rail and a second guide rail relative to the first Guide rail from a pull-out position into an insertion position along an insertion direction is displaceable, and a movement damping device which in turn comprises a housing and a housing relative to the housing includes displaceable piston.

Such drawer guides are known from the prior art. Both known drawer guides is the motion damping device to the speed of the second guide rail relative to the first guide rail in the final stages of movement of the second guide rail in to reduce the insertion position or at least limit, so that one the drawer slide held as gently as possible in the insertion position retracts.

In the known pullout guides with motion damping device whose housing is fixed to the first guide rail, and the second Guide rail moves the piston of the motion damping device in the housing into it, whereby the movement damping effect is achieved. However, this is a relatively long projection of the first guide rail required over the second guide rail in the insertion position, as the Housing with fully inserted second guide rail in the insertion direction is arranged behind the second guide rail, so that the Extent guide must have a total of a large overall length.

From DT 24 21 657 A1 is a pullout guide with a motion damping device in which a housing of the motion damping device above a stationary mounting rail, outside the displacement path a sliding rail guided on the mounting rail, arranged and a retracting into the housing piston over the running rail arranged and connected to the running rail via a cloth. in this connection is disadvantageous in that the height of the pullout guide by the above the Support rail or the running rail arranged components of the motion damping device is enlarged.

From EP 1 120 066 A2 is a collection device for movable furniture parts with a movement damping device known whose housing firmly a movable carriage is connected, which of a spring of the collection device is pulled. The intake device engages by means of a driver on a locking pin attached to the movable furniture part is. The collection device with the driver, the movable Carriage and the hydraulic damping device is below a mounting rail arranged and extends transversely to the insertion direction far over the Width of the DIN rail beyond.

The present invention is based on the object, a pullout guide of the type mentioned above, which with a movement damping device is provided and yet compact.

This object is in a drawer guide with the features of the preamble of claim 1 according to the invention achieved in that the housing of the Motion damping device so slidably held on the pullout guide is that the housing, while the second guide rail relative to the first guide rail is moved to the insertion position, of the second guide rail relative to the first guide rail from an initial position is moved to an end position.

In the solution according to the invention thus the housing of the motion damping device not firmly on one of the guide rails of the pullout guide arranged, but floatingly stored in the pullout guide, so that it is displaced from the second guide rail along the feed direction can be.

About a part of its displacement path from the initial position to the end position or across the entire displacement path the housing relative to the piston, which in turn relative to the first guide rail slidably or fixed to the first guide rail may be, whereby by this relative movement of the housing and the piston Movement of the second guide rail damped in the insertion position becomes.

As in the inventive solution, the second guide rail on the housing and does not engage the piston of the motion damping device, For example, the piston of the movement damping device can be outside the displacement path lie the second guide rail, whereby the required Length of the pullout guide is reduced.

Furthermore, in the solution according to the invention, the motion damping device acts directly between the second guide rail and the first guide rail the pullout guide and not on an element of the pullout guide held extract, so that the motion damping device can be arranged within the drawer guide, what the required height and width of the pullout guide including the motion damping device reduced.

Under a "pullout guide" is included in this description and in the attached Claims to understand any device in which at least two guide rails are held displaceable relative to each other; it is here irrelevant, whether one of the guide rails completely or partially from the other is pulled out or not.

An "extract" in this specification and in the appended claims to understand each element, which on one of the guide rails the pullout guide can be arranged and then by relative displacement the guide rails along the extension direction or the insertion direction the pullout guide is displaced.

In a preferred embodiment of the pull-out guide according to the invention it is provided that the housing of the motion damping device displaceable is held on the first guide rail.

In particular, it can be provided that the housing on a rolling body raceway the first guide rail is slidably held. This is a particularly space-saving housing of the housing possible.

It is particularly favorable if the housing by means of at least one latching element is held on the first guide rail. Such a locking connection The housing with the first guide rail can easily produced during assembly of the pullout guide and if necessary, for example for replacing the movement damping device against another movement damping device with a different damping characteristic or in the event of a malfunction of the movement damping device, simple be solved again.

In particular, it is possible to incorporate a movement damping device in one Retrofit undamped pullout guide to a invention Pull-out guide to arrive.

As motion damping device can be a built-in damper, as he used, for example, for stop damping of hinged doors in furniture construction is used when this damper example, with a Locking element or a clamping element for slidably holding the Damper housing is provided on the pullout guide.

The pull-out guide according to the invention can in principle next to the first Guide rail and the second guide rail at least one more Include guide rail.

Basically, the first guide rail of the pullout guide any Be guide rail of the pullout guide.

In a preferred embodiment of the invention, however, it is provided that the first guide rail is an outer rail of the pullout guide.

Further, preferably, the second guide rail is an inner rail of Pull-out guide, which encompassed the outer rail of the pullout guide becomes. As a result, a particularly space-saving design of the pullout guide with motion damping device allows.

The pullout guide can be a full extension guide or a partial pullout guide be educated.

In a preferred embodiment of the invention it is provided that the Housing of the motion damping device with the second guide rail not firmly connected. This offers in particular the advantage that the effective width and height of the second guide rail through the housing can not be increased, so that in particular the second guide rail easily moved relative to another guide rail of the pullout guide can be.

In order to allow the housing of the motion damping device from the second guide rail from its initial position to its end position is moved, may be provided in particular that the housing a has transversely to the insertion direction extending carrier element, to which engages the second guide rail.

Such a driving element can in particular as a driving projection be formed, in the displacement path of the second guide rail protrudes.

The piston of the motion damping device may be on the first guide rail be set.

Alternatively, it can also be provided that the piston relative to the first Guide rail is displaced.

In this case, it is preferably provided that on the first guide rail a stop for the piston is arranged, in which case the piston, once it has run against the stop, relative to the housing of the motion damping device is shifted and so the desired motion damping caused.

The piston can already be when the housing is in its initial position located, abut the stop.

In a preferred embodiment of the invention, however, it is provided that the piston is spaced from the stop when the housing is in its Initial position is located. In this case, the piston is first together moved with the housing without moving relative to the housing, until the piston abuts against the stop, whereupon the relative movement between the piston and the housing begins. By such a distance between the piston and the stop in the initial position of the housing can tolerances in the dimensions of the housing and / or the piston be compensated. Further, it is possible for the motion damping device easily against a movement damping device with others To exchange dimensions.

During the movement of the housing from its initial position in its end position the piston is relative to the housing from an initial position in moves an end position. Around the piston when pulling out the second guide rail from the insertion position back to the starting position relative to To bring the housing, for example, be provided that the stop and / or the piston is provided with a magnetic element, so that the Piston due to the magnetic attraction between the piston and the Stop when moving back the housing in its initial position initially adhering to the stop, whereby the piston relative to the Housing is moved back to its initial position. Only when the piston has reached this initial position relative to the housing and a continuation the movement of the piston relative to the housing is no longer possible is, the piston separates from the stop.

Alternatively or additionally, it can also be provided that the movement damping device a spring element comprising the piston in its initial position is moved back relative to the housing.

Such a spring element can be arranged outside or inside the housing be.

To the housing when removing the second guide rail from the insertion position can be returned to its initial position, provided be that the housing has a driving element, which with a driving element on the second guide rail cooperates so that the housing, while the second guide rail relative to the first guide rail is pulled out of the insertion position, from the end position back is moved to the starting position.

In particular, it can be provided that the entrainment element on the housing and the entrainment element on the second guide rail releasably with each other are latched.

If the housing is provided both with a first carrier element, on which the second guide rail during the movement into the insertion position engages in, as well as with a second driving element on which the second guide rail attacks when pulling out of the insertion position, so is the second carrier element preferably (seen in the pull-out direction) arranged in front of the first driving element, resulting in the shortening of necessary length of the pull-out guide contributes.

The motion damping device used in the pullout guide can In particular, include a commercially available linear damper.

Such a damper may in particular be designed so that the movement of the piston is damped relative to the housing by Feststoffreibung.

In a preferred embodiment of the invention, however, it is provided that the housing of the movement damping device has an interior, which contains a movement damping fluid, which in the relative movement is displaced by piston and housing by the piston.

This movement damping fluid may in particular be a gas or a gas mixture, in particular air.

Alternatively or additionally, it can be provided that the movement damping fluid a liquid, in particular an oil, silicone or the like, includes.

In a preferred embodiment of the pull-out guide according to the invention it is provided that the piston has at least one flow channel, which can be traversed by the movement damping fluid. The flow resistance the Bewegungsdämpfungsfluids when flowing through the flow channel then causes the desired motion damping.

In a preferred embodiment of the pull-out guide according to the invention it is provided that the pullout guide comprises a Selbsteinzugsvorrichtung.

Such a self-retraction device engages when the second guide rail moved relative to the first guide rail in its insertion position when reaching a Selbsteinzugsstartstellung on a guide rail the drawer guide and moves this guide rail automatically in the Insertion position.

The basic structure and the basic operation of such Selbsteinzugsvorrichtung are known for example from EP 0 386 731 B1.

In particular, it can be provided that the self-closing device on the second guide rail of the pullout guide attacks.

The Selbsteinzugsvorrichtung preferably comprises an energy storage and a connected to the energy storage connection element, wherein the Connecting element when removing the guide rail on which the Selbsteinzugsvorrichtung attacks, from the insertion position into a detent position is brought.

Furthermore, it can be provided that the guide rail on which the self-closing device attacks, with a control that is on reaching the Selbsteinzugsstartstellung the connecting element from the detent position moved out.

This control may in particular as one of the rail back and the Wälzkörperlaufbahnen this guide rail separately trained part be educated.

In particular, it can be provided that the control of a plastic material is formed while the remaining components of the guide rail are formed of a metallic material.

It is particularly favorable if the control not only with the connecting element the self-closing device cooperates, but at or after reaching the Selbsteinzugsstartstellung also in contact with the housing the motion damping device comes and the housing of the Start position moved to its final position.

The movement damping device and the Selbsteinzugsvorrichtung the Pull-out guide are preferably as separate, separate mutually formed and independently functioning devices educated. This makes it possible, the movement damping device and the Selbsteinzugsvorrichtung independently assemble or disassemble and for the particular application to optimize. Furthermore, it is possible in this case, the pullout guide either without self-closing device, but with motion damping device, or vice versa with motion damping device, but to use without self-closing device.

A particularly compact design of the pull-out guide according to the invention is achieved when the housing of the motion damping device in the space between the first guide rail and the second guide rail is arranged.

In particular, it can be provided that the housing of the motion damping device in the insertion position located second guide rail at least partially between a rolling body of the second guide rail and a rolling body raceway of the first guide rail is arranged.

Further features and advantages of the invention are the subject of the following Description and the drawings of exemplary embodiments.

Fig. 1

eine ausschnittsweise schematische perspektivische Darstellung einer Auszugführung mit einer Bewegungsdämpfungsvorrichtung und einer Selbsteinzugsvorrichtung;

Fig. 2

eine ausschnittsweise schematische Seitenansicht der Auszugführung aus Fig. 1, jedoch ohne die Selbsteinzugsvorrichtung;

Fig. 3

eine schematische Seitenansicht der Bewegungsdämpfungsvorrichtung der Auszugführung, die ein Gehäuse und einen relativ zu dem Gehäuse verschiebbaren Kolben umfaßt;

Fig. 4

eine schematische Ansicht der Bewegungsdämpfungsvorrichtung von hinten, mit der Blickrichtung in Richtung des Pfeiles 4 in Fig. 3;

Fig. 5

einen schematischen Längsschnitt durch die Bewegungsdämpfungsvorrichtung aus Fig. 3;

Fig. 6

eine schematische Draufsicht auf die Bewegungsdämpfungsvorrichtung aus Fig. 3, wobei die Bewegungsdämpfungsvorrichtung gegenüber der Darstellung in Fig. 3 um einen Winkel von ungefähr 150° um ihre Längsachse gedreht worden ist;

Fig. 7

eine schematische Ansicht der Bewegungsdämpfungsvorrichtung von hinten, mit der Blickrichtung in Richtung des Pfeiles 7 in Fig. 6;

Fig. 8

einen schematischen Querschnitt durch die Auszugführung einschließlich der Bewegungsdämpfungsvorrichtung;

Fig. 9

einen schematischen Querschnitt durch die drei Führungsschienen der Auszugführung;

Fig. 10

einen schematischen Längsschnitt durch die Bewegungsdämpfungsvorrichtung in einer Stellung, in welcher die Kolbenstange der Bewegungsdämpfungsvorrichtung an einem Anschlag anstößt;

Fig. 11 bis 16

ausschnittsweise schematische Seitenansichten der Auszugführung in mehreren zeitlich aufeinanderfolgenden Phasen während des Einschiebens und anschließenden Wiederausziehens der Innenschiene der Auszugführung relativ zu deren Außenschiene;

Fig. 17

einen schematischen Längsschnitt durch eine weitere Ausführungsform der Bewegungsdämpfungsvorrichtung, welche ein außerhalb des Gehäuses angeordnetes Federelement umfaßt;

Fig. 18

einen schematischen Längsschnitt durch eine weitere Ausführungsform der Bewegungsdämpfungsvorrichtung, die ein am Ende der Kolbenstange angeordnetes Magnetelement umfaßt; und

Fig. 19

einen schematischen Längsschnitt durch eine weitere Ausführungsform der Bewegungsdämpfungsvorrichtung, bei welcher das Ende der Kolbenstange ortsfest an der Außenschiene angeordnet ist.

In the drawings show:

Fig. 1

a fragmentary schematic perspective view of an extension guide with a motion damping device and a Selbsteinzugsvorrichtung;

Fig. 2

a partial schematic side view of the pullout guide of Figure 1, but without the Selbsteinzugsvorrichtung.

Fig. 3

a schematic side view of the movement damping device of the pullout guide, which comprises a housing and a relative to the housing displaceable piston;

Fig. 4

a schematic view of the movement damping device from the rear, with the viewing direction in the direction of arrow 4 in Fig. 3;

Fig. 5

a schematic longitudinal section through the motion damping device of Fig. 3;

Fig. 6

a schematic plan view of the motion damping device of Figure 3, wherein the motion damping device has been rotated relative to the illustration in Figure 3 at an angle of approximately 150 ° about its longitudinal axis ..;

Fig. 7

a schematic view of the movement damping device from the rear, with the viewing direction in the direction of the arrow 7 in Fig. 6;

Fig. 8

a schematic cross section through the pullout guide including the motion damping device;

Fig. 9

a schematic cross section through the three guide rails of the pullout guide;

Fig. 10

a schematic longitudinal section through the movement damping device in a position in which the piston rod of the movement damping device abuts against a stop;

Fig. 11 to 16

partial schematic side views of the pullout guide in several successive phases in time during the insertion and subsequent re-extraction of the inner rail of the pullout guide relative to the outer rail;

Fig. 17

a schematic longitudinal section through another embodiment of the motion damping device, which comprises a spring element disposed outside of the housing;

Fig. 18

a schematic longitudinal section through another embodiment of the motion damping device, which comprises a arranged at the end of the piston rod magnetic element; and

Fig. 19

a schematic longitudinal section through a further embodiment of the motion damping device, wherein the end of the piston rod is fixedly arranged on the outer rail.

Equal or functionally equivalent elements are the same in all figures Reference numeral.

A shown in FIGS. 1 to 16, designated as a whole with 100 pullout guide serves to a (not shown) extract, such as a Drawer, slidably to a stationary body to hold.

As best seen in the cross-section of Fig. 9, the pullout guide comprises 100 an inner rail 102 with two Wälzkörperlaufbahnen 104, which are interconnected via a rail back 106, a center rail 108, which surrounds the inner rail 102 and inner Wälzkörperlaufbahnen 110 and outer Wälzkörperlaufbahnen 112 and one the outer Wälzkörperlaufbahnen 112 interconnecting rail back 114th includes, and an outer rail 116 which surrounds the middle rail 108 and two rolling element raceways 118 and the rolling element raceways 118 Includes interconnecting rail back 120.

The inner rail 102 is by means of a rolling element 122, the example Balls 124 includes as rolling elements, on the center rail 108 in held displaceable in their longitudinal direction.

The center rail 108 is by means of a rolling body assembly 126, for example also includes balls 124 on the outer rail 116 in their Held longitudinally displaceable.

Due to the Wälzkörperanordnungen 122, 124 can thus in particular the Inner rail 102 relative to the outer rail 116 in a parallel to her Longitudinal insertion direction 128 of a pull-out position in moves an insertion position and in an opposite direction parallel to the insertion direction 128 directed extension direction 130 again relative to the Outer rail 116 are moved out of the insertion position.

The outer rail 116 may be on the body side and the inner rail 102 may be on the outboard side be arranged; but it is also possible, the outer rail 116th on the outside and the inner rail 102 to be arranged on the body side.

In order to achieve that the inner rail 102, when under action an external force has been pushed almost to the insertion position is automatically moved completely into the insertion position is the Pull-out guide 100 with a self-closing device designated as a whole with 132 provided, as known for example from EP 0 386 731 B1 is. In this document, with respect to the structure of the Selbsteinzugsvorrichtung 132 express reference.

The Selbsteinzugsvorrichtung 132 includes a guide plate 134 which on the the inner rail 102 facing the inside of the rail back 120 of the Outside rail 116 is fixed.

As best seen in Fig. 14, the guide plate 134 has a Guide channel 136 with a longitudinally extending direction 130 extending rectilinear guide section 138 and one at (in the extension direction 130 seen) front end of the guide portion 138 transverse to the guide portion 138 extending latching portion 140.

In the guide channel 136 is a connecting element 142 by means of a guide pin 144 slidably on the underside of the connecting element 142 guided.

At the top of the connecting element 142 is the guide pin 144th a driving pin 146 opposite.

Furthermore, the connecting element 142 carries on its upper side a retaining pin 148, to which one end of a tension coil spring 150 is suspended, which as Energy storage 152 of Selbsteinzugsvorrichtung 132 is used.

The other end of the tension coil spring 150 is hung on a retaining pin 154, which is arranged on the upper side of the guide plate 134.

Between their ends, the tension coil spring 150 is one Deflection cylinder 156 out.

The (seen in the extension direction 130) rear end of the inner rail 102nd is provided with a control 158 having a control channel 160 with an inlet section 162 and a latching section 164 has.

This control 158 operates in a manner to be described later with the connecting element 142 of the Selbsteinzugsvorrichtung 132 together, around the inner rail 102 upon reaching a Selbsteinzugsstartstellung to pull into the insertion end position.

To avoid that the inner rail 102 under the action of Selbsteinzugsvorrichtung 132 is accelerated too much and then on reaching the insertion position abruptly braked by a high speed In addition, the drawer slide 100 is further 166 as a whole designated motion damping device provided in detail in Figs. 3 to 7 is shown.

The motion damping device 166 includes a housing 168 having a For example, substantially cylindrical interior 170 encloses, in which a movement damping fluid, such as an oil is arranged.

In the filled with the movement damping fluid interior 170 of the housing 168 plunges a piston 172, the one inside the interior 170 arranged piston head 174 and one from the interior 170 through a back wall 176 fluid-tightly guided piston rod 178 includes.

The cross section of the piston head 174 substantially corresponds to the cross section of the interior 170.

The piston head 174 is provided with flow channels 180 through which the Motion damping fluid from the front of the piston head 174 area 170 a of the interior 170 in the behind the piston head 174 lying Region 170b of the interior 170 or in the reverse direction by the Piston head 174 can flow through, overcoming a considerable flow resistance.

The piston 172 as a whole is in its longitudinal direction 182 relative to the housing 168 slidably guided on the housing 168.

In the lying in front of the piston head 174 region 170 a of the interior 170th of the housing 168, a compression coil spring 184 is arranged, which is on the one hand at the front of the piston head 174 and on the other hand on a Front wall 186 of the housing 168 is supported. Due to the elastic restoring force of the compression coil spring 184, the piston 172 is in an initial position brought in which the piston head 174 of the front wall 186 of the housing 168 is spaced apart.

The housing 168 of the motion damping device 166 is in the extension direction 130 slidably on the outer rail 116 of the pullout guide 100th held.

For this purpose, on the outside of the housing 168 two are in the longitudinal direction the housing 168 extending guide rails 188 provided to the their ends facing away from the housing 168 carry locking tongues 190.

As best seen in Fig. 1, the guide rails extend 188 by a guide channel 192, which in one of the Wälzkörperlaufbahnen 118 of the outer rail 116 is formed and in the extension direction 130th extends through and are by means of the locking tongues 190 on the outer rail 116 locked.

The guide rails 188 have such elasticity that they in the Assembly of the movement damping device 166 pressed against each other can be that the guide rails 188 with the locking tongues 190th proceeding from the inside of the outer rail 116 through the guide channel 192 can be moved through. After passing through the Guide channel 192, the locking tongues 190 move due to the elasticity the guide rails 188 apart again, so that the housing 168 slidably held on the outer rail 116.

Furthermore, a stop 194 is provided on the inside of the outer rail 116, the transverse to the extension direction 130 in the displacement of the piston 172 of the motion damping device 166 extends inside. If that End of the piston rod 178 at a displacement of the housing 168 the stop 194 is reached, with a continuation of the displacement of the housing 168 the piston 172 is no longer moved relative to the outer rail 116, but by the stop 194 against the restoring force of the compression coil spring 184 on the front wall 186 of the housing 168 moves.

To the housing 168 relative to the outer rail 116 in the insertion direction 128, the housing 168 is on its opposite the guide rails 188 Side, approximately midway between the front wall 186 and the rear wall 176 of the housing 168, provided with a driving projection 196, which transverse to the insertion direction 128 in the displacement of the Inner rail 102 protrudes. The inner rail 102 may thus (via its Control 158) engage the driving projection 196 to the housing 168 in the insertion direction 128 to move.

To the housing 168 when pulling the inner rail 102 to its initial position to be able to move back, the housing 168 is at its (in the Extension direction 130 seen) front end with a catch button 198th provided with a front edge of the control element 158 of the inner rail 102 cooperates so that the housing 168 when removing the Inner rail 102 is moved back to the initial position of the housing 168 becomes.

The function of the above-described pullout guide 100 with Selbsteinzugsvorrichtung 132 and motion damping device 166 is in the following with reference to Figs. 11 to 16 described in detail:

In the illustrated in Fig. 11 partially extended position of the inner rail 102 is the housing 168 of the motion damping device 166 in its front starting position, in which the guide rails 188 at the front end of the guide channel 192 of the outer rail 116 abut. The piston 172 is in this position in its initial position, in which the piston head 174 the maximum distance from the front wall 186 and the rear end 200 of the piston rod 178 the maximum distance occupy from the rear wall 176 of the housing 168. The end of Piston rod 200 is in this initial position of the stop 194 at the Outer rail 116 spaced.

The connecting element 142 of the Selbsteinzugsvorrichtung 132 is located in its front starting position, in which the guide pin 144 in Locking portion 140 of the guide channel 136 and thus arranged the connecting element 142 is locked to the guide plate 134. In this Starting position, the tension coil spring 150 is stretched and stores so the energy required for the self-retraction of the inner rail 102.

When the inner rail 102 under the action of an external force in the insertion direction 128 is moved, the control 158 runs at the end of the Inner rail 102 upon reaching the Selbsteinzugsstartstellung shown in Fig. 12 against the driving pin 146 of the connecting element 142, which on continuation of the insertion movement through the transverse to the insertion direction 128 extending edge of the inlet portion 162 of the control channel 160th is pressed into the latching portion 164 of the control channel 160. At the same time arrives in this movement of the connecting element 142 transversely to the insertion direction 128 of the guide pin 144 of the connecting element 142 from the latching portion 140 of the guide channel 136 out and in the rectilinear Guide portion 138 into it, so that the connecting element 142 of his latching on the guide plate 134 is released and the restoring force the tension coil spring 150 along the direction of insertion 128 after can be pulled behind. In this case, the connecting element 142 via the in the locking portion 164 of the control channel 160 located driving pin 146th locked with the control element 158 of the inner rail 102, so that the inner rail 102 of the connecting member 142 with rearwardly in its insertion position is pulled. Together with the inner rail 102 is also the center rail 108 of the pullout guide 100 in its insertion position relative pulled to the outer rail 116.

Before reaching the Selbsteinzugsstartstellung (Fig. 12) passes the control 158 of the inner rail 102, the driver button 198 on the housing 168 of Motion damping device 166, but only a small resistance has to be overcome, so that the housing 168 is not yet set in motion becomes.

However, if the inner rail 102 with the control 158, the in Fig. 13 reached position shown, comes the rear edge of the control 158 in contact with the driving projection 196 of the housing 168, so that from this time, the housing 168 of the inner rail 102 along the insertion direction 128 is moved relative to the outer rail 116.

As long as the end of the piston rod 200 is still spaced from the stop 194 is, however, there is still no relative movement between the Piston 172 and the housing 168, so that the movement of the inner rail 102 initially not braked.

Once the end of the piston rod 200 abuts the stopper 194 and thus the piston 172 is not further displaced along the insertion direction 128 can be, moves the housing 168 alone in the insertion direction 128 further, which has the consequence that the piston head 174 in the interior 170th of the housing 168 relative to the front wall 186 moves forward.

This in this relative movement between the piston 172 and the housing 168 displaced volume of the movement damping fluid from the region 170a of the interior flows through the flow channels 180 in the piston head 174 in the area 170b of the interior. Because of this too overcoming flow resistance in the narrow flow channels 180 a braking force causing the movement of the housing 168 and thus the movement of the control element 158 on the driving projection 196 of the housing 168 abutting inner rail 102 along the insertion direction 128 decelerates or at least further acceleration of the Inner rail 102 prevents.

When the inner rail 102 is provided at the one for the inner rail 102 Stop 202 abuts, therefore, it has only a comparatively low speed so that they are in their insertion position with only a slight delay comes to rest (see Fig. 14).

In this insertion position of the inner rail 102 and the housing 168 has the movement damping device 166 reaches its end position, in which the guide rails 188 with their rear edge at the rear end of the Guide channel 192 of the outer rail 116 abut.

In this position, the piston 172 is relative to the housing 168 in its end position, in which the distance between the piston head 174 and the front wall 186 of the housing 168 is minimal.

When the inner rail 102 again on exposure to an external force the insertion position in the extension direction 130 is pulled out (see FIG. 15), the connecting element 142 of the self-closing device 132 moved by the control element 158 in the extension direction 130, wherein the tension coil spring 150 is stretched again.

The housing 168 of the motion damping device 166 remains initially in the final position.

Only when the (seen in the extension direction 130) front edge of the control 158 abuts the driving button 198 of the housing 168, the locks Drive button 198 in front of the control element 158, so that from this time the housing 168 of the inner rail 102 along the extension direction 130 is moved back from its end position to its initial position.

Once the housing 168 moves away from the stop 194 of the piston 172, is also the piston 172 of the motion damping device 166 by the restoring force of the compression coil spring 184 from its end position moved back to its initial position until the rear end 200 of the Piston rod 178 again the maximum distance from the rear wall 176 of Housing 168 occupies.

If the housing 168 then continues along the extension direction 130 after moved forward, so the end 200 of the piston rod 178 moves away from the Stop 194.

Upon reaching the Selbsteinzugsstartstellung pushes the control 158 of Inner rail 102, the driving pin 146 of the connecting element 142 in the locking portion 140 of the guide channel 136, so that the connecting element 142 with tensioned tension coil spring 150 again with the guide plate 134 is locked.

At the same time, the housing 168 reaches the movement damping device 166 its initial position, in which the guide rails 188 at the front end abut the guide channel 192, so that the housing 168 no longer continue along the extension direction 130 can be moved (see Fig. 16).

In a further extension of the inner rail 102 along the extension direction 130 are therefore the catch button 198 of the housing 168 and the front Edge of the control 158, overcoming a small detent resistance unlocked from each other, so that then the inner rail 102nd without the housing 168 and without the connecting element 142 further moved.

A subsequent insertion process of the inner rail 102 then runs again as described above.

The position in which the housing 168 when pulling out the inner rail 102 reaches its initial position, does not have to start with the Selbsteinzugsstartstellung, in which the connecting element 142 of the Selbsteinzugsvorrichtung 132 reached its starting position, coincide. Rather, the case can 168 its initial position when pulling the inner rail 102 also reach before or after the time at which the connecting element 142 reached its starting position.

A illustrated in Fig. 17 second embodiment of an extension guide 100th differs from the first embodiment described above only in that the compression coil spring 184, which the piston 172 the motion damping device 166 relative to the housing 168 in its initial position biases, not in the interior 170 of the housing 168, but outside the housing 168 is arranged so that it outside the housing 168 lying part of the piston rod 178 surrounds.

In this embodiment, the compression coil spring 184 is supported on the one hand on the outside of the rear wall 176 of the housing 168 and on the other hand at the front of an end plate 204, which is the rear end of the piston rod 178 forms, off.

In Fig. 17, a position is shown, in which the piston rod 178 with the End plate 204 abuts against the stop 194 on the outer rail 116. Also in this embodiment, the piston rod 178 may move backward of the housing 168 are released to the initial position of the stopper 194.

Incidentally, the second embodiment shown in FIG. 17 is correct Structure and function with the first embodiment match, on the the description above is incorporated by reference.

A illustrated in Fig. 18 third embodiment of an extension guide 100th differs from the second embodiment described above in that the motion damping device 166 in this embodiment has no pressure coil spring which the piston 172 in its initial position pretensions.

Instead, in this embodiment, on the end plate 204 of the piston rod 178 arranged a magnetic element 206, which with the stop 194, which comprises a ferromagnetic material, cooperates such that the Piston 172 when the housing 168 when pulling out the inner rail 102 is moved back to its initial position, first at the stop 194th is retained until the piston 172 relative to the housing 168 in has moved back to its initial position.

Only when the piston 172 has its initial position relative to the housing 168 has reached and not be moved relative to the housing 168 can, in this embodiment, the piston rod 178 with the magnetic element 206 of the stop 194 solved.

In a variant of this embodiment can also be provided that the magnetic element 206 arranged on the stop 194 or the stop 194 itself is formed as a magnetic element and that the piston rod 178 comprises a ferromagnetic material.

Otherwise, the third embodiment shown in FIG. 18 is true Pull-out guide 100 in terms of design and function with the first and the second embodiment, to the above description insofar Reference is made.

An illustrated in Fig. 19 fourth embodiment of an extension guide 100th differs from the three embodiments described above in that the piston 172 is not relative to the stop 194 on the outer rail 116 is displaceable, but instead fixed to the stop 194 is.

The determination of the piston 172 on the stop 194 can, for example by means of a screw 208 having a through hole 210 in the Stop 194 passes through and into a threaded blind hole 212 at the end of the piston rod 178 is screwed.

In this embodiment, movement of the piston 172 relative to the housing 168 and thus a braking effect of the motion damping device 166, once the housing 168 of the inner rail 102 in motion is set.

In this embodiment, however, it is necessary that the length of the piston 172 and the distance between the initial position and the end position of the housing 168 are matched to each other, while in the above described embodiments, the length of the piston 172 (within certain limits) regardless of the distance between the initial position and the end position of the housing 168 can be selected.

Otherwise, the fourth embodiment shown in FIG. 19 is true Pull-out guide 100 in terms of design and function with the first to third Embodiment, to the above description insofar reference is taken.

Claims (30)

Pullout guide, comprising at least a first guide rail (116) and a second guide rail (102) which is displaceable relative to the first guide rail (116) from a pullout position to an insertion position along an insertion direction (128),
and a motion dampening device (166) comprising a housing (168) and a piston (172) slidable relative to the housing (168),
characterized in that
the housing (168) is slidably retained on the pullout guide (100) such that the housing (168) is moved by the second guide rail (102) while the second guide rail (102) is moved to the insertion position relative to the first guide rail (116) ) is moved relative to the first guide rail (116) from an initial position to an end position. Pull-out guide according to Claim 1, characterized in that the housing (168) is held displaceably on the first guide rail (116). Pull-out guide according to Claim 2, characterized in that the housing (168) is held displaceably on a roller body raceway (118) of the first guide rail (116). Pull-out guide according to one of Claims 2 or 3, characterized in that the housing (168) is held on the first guide rail (116) by means of at least one clamping element or latching element (190). Pull-out guide according to one of Claims 1 to 4, characterized in that the first guide rail (116) is an outer rail of the pull-out guide (100). Pull-out guide according to one of Claims 1 to 5, characterized in that the housing (168) is not firmly connected to the second guide rail (102). Pull-out guide according to one of Claims 1 to 6, characterized in that the housing (168) has a carrier element (196) which extends transversely to the insertion direction (128) and on which the second guide rail (102) engages. Pull-out guide according to claim 7, characterized in that the driving element (196) is formed as a driving projection (196) projecting in the displacement path of the second guide rail (102). Pull-out guide according to one of claims 1 to 8, characterized in that the piston (172) is fixed to the first guide rail (116). Pull-out guide according to one of claims 1 to 8, characterized in that the piston (172) is displaceable relative to the first guide rail (116). Pull-out guide according to Claim 10, characterized in that a stop (194) for the piston (172) is arranged on the first guide rail (116). An extension guide according to claim 11, characterized in that the piston (172) is spaced from the stop (194) when the housing (168) is in its initial position. Pull-out guide according to one of claims 10 to 12, characterized in that the stop (194) and / or the piston (172) is provided with a magnetic element (206). Extensible slide according to one of claims 1 to 13, characterized in that the movement damping device (166) comprises a spring element (184) which moves the piston (172) into an initial position relative to the housing (168). Pull-out guide according to Claim 14, characterized in that the spring element (184) is arranged outside the housing (168). Pull-out guide according to Claim 14, characterized in that the spring element (184) is arranged inside the housing (168). Pull-out guide according to one of claims 1 to 16, characterized in that the housing (168) has a driving element (198) which cooperates with a driving element (158) on the second guide rail (102) so that the housing (168) during the second guide rail (102) is pulled out of the insertion position relative to the first guide rail (116), is moved from the end position back to the initial position. Pull-out guide according to claim 17, characterized in that the entrainment element (198) on the housing (168) and the entrainment element (158) on the second guide rail (102) are releasably latchable to one another. Pull-out guide according to one of claims 1 to 18, characterized in that the housing (168) has an interior (170) comprising a movement damping fluid. Pull-out guide according to claim 19, characterized in that the movement damping fluid comprises a gas or a gas mixture. Pull-out guide according to one of Claims 18 or 19, characterized in that the motion-damping fluid comprises a liquid, in particular an oil. Pull-out guide according to one of claims 19 to 21, characterized in that the piston (172) has at least one flow channel (180) through which the motion-damping fluid can flow. Pull-out guide according to one of claims 1 to 22, characterized in that the pull-out guide comprises a Selbsteinzugsvorrichtung (132), which, when the second guide rail (102) relative to the first guide rail (116) is moved to its insertion position upon reaching a Selbsteinzugsstartstellung on a guide rail (102) of the pullout guide (100) engages and moves this guide rail (102) in the insertion position. Pull-out guide according to Claim 23, characterized in that the self-closing device (132) acts on the second guide rail (102) of the pull-out guide (100). Pull-out guide according to one of claims 23 or 24, characterized in that the self-retraction device (132) comprises an energy store (152) and a connection element (142) connected to the energy store (152), the connecting element (142) being pulled out of the guide rail (102 ), at which the self-closing device (132) engages, is brought from the insertion position into a detent position. Pull-out guide according to Claim 25, characterized in that the guide rail (102) on which the self-closing device (132) engages is provided with a control element (158) which, when the self-closing starting position is reached, moves the connecting element (142) out of the detent position. Pull-out guide according to claim 26, characterized in that the control element (158) comes into contact with the housing (168) of the movement damping device (166) during or after reaching the self-closing start position and moves the housing (168) from the initial position to the end position. Pull-out guide according to one of claims 26 or 27, characterized in that the control element (158) is formed from a plastic material. Pull-out guide according to one of claims 23 to 28, characterized in that the movement damping device (166) and the self-retraction device (132) are formed separately from each other. Pull-out guide according to one of claims 1 to 29, characterized in that the housing (168) of the movement damping device (166) in the intermediate space between the first guide rail (116) and the second guide rail (102) is arranged.

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