EP0875178B1 - Parallel drawer slide - Google Patents

Abstract

Extension guides, each with two or more rails, are situated at each side of the insert, one rail being fixed to the latter and one to the body. A first guide has two rollers (170) solidly coupled by a shaft, and a second guide has a basic portion (130) for each roller and an extending portion (180) sliding between the retracted position and an outer one in which it forms an extension of the basic one. One guide is fixed to the body and the other travels with the insert. The extending portion travels in a straight line in relation to the basic one, and typically along it in the extension direction. It can have a driving face engaged by a dog so as to move with the insert during extension, and which protrudes into the path of the dog, while moving out of this path on reaching the extended position, typically caused by a pivoting movement of the extending portion.

Description

The present invention relates to a parallel pull-out design for an insert which can be pulled out from a body along a pull-out direction, comprising
pull-out guides provided for opposite sides of the insert in each case with at least two guide rails, a first of which can be connected to the body and a second to the insert, and
a parallel guide for the pull-out guides,
with a first parallel guide element which has two rolling bodies rigidly connected by a shaft, and
with a second parallel guide element, which for each rolling element has a base part provided with a first roll bar and an extension part provided with a second roll bar, which extends from an insertion position in which the extension part is in when the slide is fully inserted into the body, relative to the base part Extension position is movable, in which the second roll bar forms an extension of the first roll bar,
one parallel guide element being arranged stationary on the body and the other parallel guide element being movable with the insert.

Such a parallel extension is from the European one Patent 0 512 615 known.

By the interaction of the first and the second parallel guide element is achieved that the insert always so remains aligned that a smooth pulling out of the Insertion from the body and an equally smooth insertion of the insertion in the body exactly parallel to the by the orientation of the pull-out guides is possible.

The extension part ensures that the rolling element when pulling out the drawer from the body further in the direction of extension can be moved forward than this without the extension part would be the case. In particular, can be made possible by such an extension part that the rolling elements move beyond a front of the body.

In the known from European patent specification 0 512 615 The extension part of the Insert position in the extension position by a relative pivoted to the body stationary pivot axis. This brings the disadvantage that the extension part in the insertion position is oriented transversely to the pull-out direction, so that the longitudinal extent of the extension part and thus the maximum distance that the second scroll bar the first The scroll bar can extend due to the height of the insert is limited.

The present invention is therefore based on the object a parallel extension of the type mentioned above to improve that the extension part in the insertion position is arranged to save space, so that the parallel extension equally suitable for inserts of any height is.

This task is carried out in a parallel extension with the Features of the preamble of claim 1 according to the invention solved that the extension part relative to the base part is essentially linearly displaceable.

The concept according to the invention enables the second rolling bar of the extension part in the insertion position in to be arranged essentially parallel to the pull-out direction, so that of the extension part in the insertion position space essentially occupied transversely to the direction of extension regardless of the distance around which the second scroll bar is the first scroll bar is extended, and thus also at low Inserts of sufficiently large extensions of the first Scroll bar can be reached.

The space required for the extension part transverse to the direction of extension can be kept particularly low if the extension part along the extension direction relative to the base part is movable.

In particular, it can be provided that the movement of the extension part from the inserted position to the extended position only one relative to the base part Displacement of the extension part along the pull-out direction is.

Alternatively, however, it can also be provided that the movement of the extension part from the insertion position into the Extension position relative to the base part next to an in essential linear displacement also a swivel or Includes tilting movement, in particular a swivel or Tilt movement through a small angle through which the extension part is locked in a locked position.

About how the movement of the extension part from the insertion position into the extended position so far no further details have been given.

This movement is advantageously brought about by the extension part has a driving surface on which when pulling out the insert attacks a driver that the extension part from the insertion position to the extension position is moved.

In particular, the driving surface of the extension part when pulling out the slide in the direction of movement of the Driver arranged in front of the same in the path of the driver his.

The driver can basically on any element of the parallel extension be arranged which when pulling out of the drawer moved from the body relative to the base part. If the second parallel guide element and thus that Base part is arranged stationary on the body, so the Driver arranged in particular stationary on the insert his. On the other hand, is the second parallel guide element and so that the base part can be moved with the insert, the Driver can be arranged stationary on the body.

In general, the extension part will not be required the same distance along the direction of extension move by which the insert moves in the pull-out direction becomes. Rather, it will suffice if the driver takes the extension part in the initial phase of the pull-out movement moved into the extended position.

To ensure that the driver can move freely can continue if the extension part the extension position has reached, it is advantageous if the Driving area of the extension part when the extension position is reached is movable from the path of the driver.

In particular, it can be provided that the driving surface of the Extension part when reaching the extension position is pivotable from the path of the driver.

To the driving area when reaching the extension position Removal from the path of the driver can be provided be that the driving surface when reaching the extension position by a pivoting movement of the extension part is pivotable from the path of the driver.

Alternatively, it can also be provided that the extension part comprises a coupling element on which the driving surface is arranged and movable relative to the extension part, in particular is pivotable.

To prevent the extension part from moving back undesirably from the extended position to the insertion position extended slide-in, the perfect functioning of the parallel extension could interfere with preventing is advantageously the extension part in the extension position latched.

The security and ease of use of the invention Parallel extension are increased if the extension part automatically when pulling out the plug-in Extension position engages.

In particular, the extension part can have a latching surface, which engage when the extension position is reached with one, preferably arranged on the base part, Lockable area can be brought.

That when pulling out the slide in the extension position latched extension part is when inserting the insert unlatched again.

To enable this unlatching, it is advantageous if the extension part has a release element against that a ratchet starts when the slide-in is inserted, and that the locking surface is coupled to the unlocking element is that the locking surface out of engagement with the locking surface is brought when the unlocking against the unlocking element starts.

In particular, it can be provided that the unlocking element is a slant.

A reduction in the number of elements required Parallel extension is achieved when the unlatching at Pulling out the plug-in serves as a driver of the extension part from the inserted position to the extended position emotional.

Due to environmental influences such as vibrations or due to accidental manual unlocking of the extension part it can happen that the locking part when pulled out Insert is unlatched and in the inserted position emotional. If this is the case, then it is usually the driver in the pull-out direction in front of the driving surface of the extension part, so that the driver is not easily attack on the driving surface of the extension part can to the extension part in the extension position retrieve.

To bring the extension part back into the extension position by means of the driver if the extension part inadvertently moved into the insertion position was, the extension part advantageously has one Return surface with which the driver is in the inserted position located extension part by inserting the Insert can be brought into engagement, and when pulling out the insertion of the driver attacks so that the extension part from the inserted position to the extended position is moved.

It is particularly favorable if the parallel extension is next to a driver who is the extension part in the initial phase the pull-out movement of the insert from the insert position moved into the extended position, one Return carrier includes that between the carrier and the Roll body is arranged and with one on the extension part arranged, against the pull-out direction to the rear aligned take-back surface when in the inserted position located extension part by pulling out the Insert can be brought into engagement and when pulling out the Inserts attack on the return driving surface so that the Extension part from the insertion position to the extension position is moved. This measure makes it possible the extension part by continuing the extension movement to bring the insert back into the extension position, without inserting the slot for this purpose to have to, if the locking part is only partially extended slot is unlocked and into the Insert position moved.

It is expedient if the extension part is a return element has, which is arranged in the path of the driver and at The insertion of the insert can thus be displaced from the path of the driver is that the driver is in the inserted position located extension part in engagement with the return surface is feasible. This makes it possible to in the inserted position located extension part the driver to position relative to the extension part that the return surface when pulling out the slide in the Direction of movement of the driver is in front of the same.

The position of the extension part in the insertion position the extension part can define exactly Have stop that the movement of the extension part limited to the insertion position when inserting the insert.

In a preferred embodiment of the invention The slide-in version becomes parallel when it is pushed in automatically moves a feed path into an insertion end position. For this purpose, the parallel pull-out version includes an energy store, which when moving the extension part of the Insertion position in the extension position absorbs energy, being with the absorbed and stored energy the slide-in when inserted into a Insert end position is movable.

In particular, it can be provided that the feed path the slot corresponds to the distance by which the extension part when pulling out the drawer from the drawer position straight into the extended position along the direction of extension is moved.

This is preferably also the case with the stored energy Extension part movable into the insertion position.

The energy store can be an elastic energy store be attacking the extension part.

For example, the elastic energy store can be a tension spring or be an elastic rubber band. The elastic Energy storage can on the one hand on the extension part and on the other hand, for example, be fixed to the base part.

A particularly compact construction of the parallel pull-out version is achieved when the elastic energy storage at least partly in a recess provided in the base part is arranged.

To ensure that the pull-out movement is guided as precisely as possible To achieve the insertion, it is advantageous if the Roll the rolling element onto the unwinding strips as slip-free as possible.

For this purpose, the rolling elements can be designed as friction wheels and the rolling bars are provided with rubbing bars.

Alternatively, the rolling elements can be designed as gear wheels and the first and second scroll bars with rows of teeth be provided.

A particularly good engagement between the gears on the one hand and the rows of teeth on the other hand is achieved that the gears each have at least two in the axial direction have offset sprockets and that the first and second roll bars at least two vertically offset with respect to the rolling direction of the gears Have rows of teeth.

It is particularly advantageous if the gear rings of the gears in the circumferential direction by half a tooth spacing from each other are offset and if the rows of teeth of the first and second scroll bars each in the rolling direction of the gears are offset by half a tooth spacing.

To prevent the teeth of the gears from moving during the rolling movement perpendicular to the rolling direction from the rows of teeth moving out, it is beneficial if the gears each have a guide disc arranged between the sprockets have, which in a space between the Rows of teeth of the first or second roller bars engages.

In a particularly compact version of the invention Parallel extension is the extension part in the Inserted position in a recess of the base part. When changing from the insertion position to the extension position in this case becomes the extension part pulled out telescopically from the recess of the base part.

In particular, it can be provided that the extension part in the inserted position on at least one with a rolling bar provided leg of the base part rests, wherein the unwinding bar of the leg and the unwinding bar of the Extension part to a scroll bar with enlarged Add width.

A particularly precise control of the displacement movement of the Extension part can be achieved in that the extension part slidable in a recess of the base part is led.

If the extension part is in the insertion position in a Recess of the base part is received, so the extension part slidably guided in the same recess his.

For precise determination of the insertion position of the extension part the extension part can have a stop, which lies in the inserted position on the base part.

A particularly preferred embodiment of the invention Parallel extension version includes a cover apron for each rolling element, one in the rolling direction in front of the rolling body lying area of the respective first or second scroll bar covered. This prevents foreign objects during the rolling motion of the rolling elements on the rolling bars between one of the rolling elements and the associated rolling bar be drafted.

In particular, the apron can also function as Take-back driver described above.

At a constant distance between the apron or the return driver and the respectively assigned rolling element To ensure it can be provided that the apron or the return driver rigidly with a bracket that Roll body connecting shaft is connected.

The apron or the return driver are advantageous and the bracket of the shaft from a corner connector, in particular a corner connector for a hanging frame trained insert, held.

The cover apron or the return driver are preferably and the bracket of the shaft in one piece with the corner connector educated.

It when the pull-out guides of the parallel extension execution according to the invention at least in each case three guide rails enclose what is a full extension of the drawer allows beyond a front of the body.

Other features and advantages of the invention are the subject the following description and graphic representation of Embodiments.

Fig. 1:

einen Ausschnitt aus einer teilweise geschnittenen Draufsicht auf einen mittels einer ersten Ausführungsform einer Parallelauszugführung in einem Korpus geführten Einschub;

Fig. 2:

eine teilweise geschnittene Seitenansicht der ersten Ausführungsform einer Parallelauszugführung im eingeschobenen Zustand, von der Einschubseite aus gesehen;

Fig. 3:

einen Querschnitt durch die erste Ausführungsform einer Parallelauszugführung im eingeschobenen Zustand;

Fig. 4:

einen Längsschnitt durch ein zweites Parallelführungselement der ersten Ausführungsform einer Parallelauszugführung im eingeschobenen Zustand;

Fig. 5:

eine teilweise geschnittene Seitenansicht der ersten Ausführungsform einer Parallelauszugführung im vollständig ausgezogenen Zustand;

Fig. 6:

eine Draufsicht auf die erste Ausführungsform einer Parallelauszugführung im vollständig ausgezogenen Zustand;

Fig. 7:

einen Längsschnitt durch das zweite Parallelführungselement der ersten Ausführungsform einer Parallelauszugführung im vollständig ausgezogenen Zustand;

Fig. 8:

eine teilweise geschnittene Seitenansicht einer zweiten Ausführungsform einer Parallelauszugführung im eingeschobenen Zustand, von der Einschubseite aus gesehen;

Fig. 9:

eine Seitenansicht eines Kopplungskopfes des Verlängerungsteils der zweiten Ausführungsform einer Parallelauszugführung;

Fig. 10:

einen Schnitt durch den Kopplungskopf des Verlängerungsteils der zweiten Ausführungsform einer Parallelauszugführung längs der Linie 10-10 in Fig. 9;

Fig. 11:

eine teilweise geschnittene Seitenansicht der zweiten Ausführungsform einer Parallelauszugführung im vollständig ausgezogenen Zustand;

Fig. 12:

eine Draufsicht auf die zweite Ausführungsform einer Parallelauszugführung im vollständig ausgezogenen Zustand;

Fig. 13:

eine Seitenansicht eines Eckverbinders für einen Einschub, mit einem Rückhol-Mitnehmer für ein Verlängerungsteil und mit einer Halterung für eine Synchronisierungswelle einer Parallelauszugführung, von der Einschubseite aus gesehen;

Fig. 14:

eine Draufsicht auf den Eckverbinder aus Fig. 13.

The drawings show:

Fig. 1:

a section of a partially sectioned plan view of an insert guided in a carcass by means of a first embodiment;

Fig. 2:

a partially sectioned side view of the first embodiment of a parallel pull-out in the inserted state, seen from the insertion side;

Fig. 3:

a cross section through the first embodiment of a parallel pull-out in the inserted state;

Fig. 4:

a longitudinal section through a second parallel guide element of the first embodiment of a parallel extension guide in the inserted state;

Fig. 5:

a partially sectioned side view of the first embodiment of a parallel extension in the fully extended state;

Fig. 6:

a plan view of the first embodiment of a parallel pull-out in the fully extended state;

Fig. 7:

a longitudinal section through the second parallel guide element of the first embodiment of a parallel extension guide in the fully extended state;

Fig. 8:

a partially sectioned side view of a second embodiment of a parallel extension in the inserted state, seen from the insertion side;

Fig. 9:

a side view of a coupling head of the extension part of the second embodiment of a parallel extension;

Fig. 10:

a section through the coupling head of the extension part of the second embodiment of a parallel extension version along the line 10-10 in Fig. 9;

Fig. 11:

a partially sectioned side view of the second embodiment of a parallel extension in the fully extended state;

Fig. 12:

a plan view of the second embodiment of a parallel pull-out in the fully extended state;

Fig. 13:

a side view of a corner connector for a slide-in, with a return driver for an extension part and with a holder for a synchronization shaft of a parallel pull-out version, seen from the slide-in side;

Fig. 14:

a plan view of the corner connector of FIG. 13th

The same or functionally equivalent elements are in all Figures with the same reference numerals.

One shown in Figures 1 to 4 in the inserted state first embodiment one as a whole with 100 designated parallel extension is used to guide a extendable from a body 102 in a pull-out direction 104 Insert 106 on the body 102.

The parallel pull-out version 100 comprises on both sides of the insert 106 between each side wall 108 of the insert 106 and an inner wall of the body 102 Pull-out guides 110, of which the one shown in FIGS the pull-out guide 104 arranged on the right 104 is shown.

The elements of the left in the pull-out direction 104 Pull-out guides 110 are mirror images of those on the right arranged pull-out guide 110 formed and arranged.

As can be seen from FIG. 3, each pull-out guide comprises 110 a substantially U-shaped support rail 112 which one has long leg 114 and a short leg 116, the holding rail 112 with the long leg 114 on the The inner wall of the body 102 is fixed and the short leg the holding rail 112 has a body-side guide rail 118 with a substantially C-shaped cross section. The open one Body side guide rail 118 side is to the side wall 108 of the insert 106 directed.

Between the legs of the cabinet-side guide rail 118 a middle guide rail 120 is arranged, which also has a substantially C-shaped cross section and on the body-side guide rail 118 by means of between the legs of the middle guide rail 120 and the body-side guide rail 118 arranged rolling elements, preferably guided by balls 122. Even the middle one Guide rail 120 is with its open side to the side wall 108 of the insert 106 directed.

Is between the legs of the middle guide rail 120 a slide-in guide rail 124 arranged, the also has a substantially C-shaped cross section and by means of between the legs of the insertion side Guide rail 124 and the middle guide rail 120 arranged Rolling elements, preferably by means of balls 126 the middle guide rail 120 is guided. The insert side Guide rail 124 is closed with its open side the middle guide rail 120 directed and on her the middle guide rail 120 facing away from the Side wall 108 of insert 106 fixed.

The body-side guide rail 118, the middle guide rail 120 and form the slide-in guide rail 124 together a three-part full extension version that enables the insert 106 in the pull-out direction 104 so far pull out of the body 102 that a rear wall 126 of the Insert 106 in the fully extended state in the pull-out direction 104 arranged in front of the front 128 of the body 102 is.

The body-side guide rail 118 carries on the top of its upper leg an essentially cuboid, next to the side wall 108 of the insert 106 along the Pull-out direction 104 extending base part 130 of the parallel pull-out version 100th

The base part 130 is on the body-side guide rail 118 provided holding tabs 134 and 136 and on the base part 130 provided holding tabs 138 with the body side Guide rail 118 clamped.

The base part 130 comprises one in the pull-out direction 104 rear area 140 and one in the pull-out direction 104 front area 142, the front its top is essentially cuboid, itself along the extension direction 104 from a front of the base part 130 rearwardly extending guide recess 144 having.

The guide recess 144 becomes the insert 106 side through an inner guide leg 146 and to the side of the body 102 through an outer guide leg 148 of the front area 142 of the base part 130.

The sides facing the insert 106 are as follows the elements of the parallel pull-out version 100 as the inside thereof, the sides of these elements facing the body 102 referred to as their outsides. Furthermore, the following the front in the pull-out direction 104 of the Elements of the parallel pull-out version 100 as their front sides, the sides lying in the pull-out direction 104 of these elements referred to as their back sides or back sides.

A rear area of the guide recess 144 opens towards the top of the cabinet-side guide rail 118 while a front area of the guide recess 144 bounded downward by a guide projection 150 is that between the inner guide leg 146 and the outer guide leg 148 of the base part 130 along the Extending direction 104 from the front of the base part 130 extends backwards and from the inner guide leg 146 and the outer guide leg 148 is worn.

A front end of the guide projection 150 engages front end of the body-side guide rail 118 and has on its front a perpendicular to the direction of extension 104 aligned front stop surface 152.

A rear end of the guide projection 150 also has one substantially perpendicular to the pull-out direction 104 aligned rear stop surface 154.

The rear region 140 of the base part 130 is on it Top with a close to the inner edge of the top inner extending along the pull-out direction 104 Row of teeth 156 and one parallel to the inner row of teeth 156 near the outer edge of the top of the base part 130 extending along the pull-out direction 104 Row of teeth 158 provided. For the sake of clarity are not all teeth of rows of teeth 156 in the drawings and 158.

Between the inner row of teeth 156 and the outer row of teeth 158 extends at the top of the rear region 140 of the base part 130, a guide groove 160 along the pull-out direction 104 from the guide recess 144 to a rear End of base 130.

The inner guide leg 146 is on its top an inner partial row of teeth 162, which is connected to the front End of the inner row of teeth 156 connects and the same Front of the base part 130 continues.

Furthermore, the outer guide leg 148 is on its upper side with an outer row of teeth 164 provided on the front end of the outer row of teeth 158 connects and continues to the front of the base 130.

For the sake of clarity are in the drawings not all teeth of the partial tooth rows 162 and 164 are shown.

The width of the inner part row of teeth 162 and the outer Partial row of teeth 164 is slightly less than half that Width of the inner row of teeth 156 or the outer row of teeth 158th

The teeth of the inner row of teeth 156 are opposite the teeth the outer row of teeth 158 in the pull-out direction 104 by one half tooth spacing. The teeth are corresponding the inner partial tooth row 162 with respect to the teeth of the outer Partial row of teeth 164 in the pull-out direction 104 by one half tooth spacing.

As shown in Figures 1 and 2, engage in the inserted Condition of the parallel pull-out version 100 an inner Ring gear 166 and an outer ring gear 168 of a double gear 170 in the inner row of teeth 156 or the outer row of teeth 158 of the base part 130 at their respective rear ends on. The inner ring gear 166 is opposite the outer one Ring gear 168 in the circumferential direction of the double gear 170 um half a tooth spacing to a simultaneous Engagement of the double gear 170 in the inner row of teeth 156 and to enable the outer row of teeth 158 of the base part 130.

For the sake of clarity are in the drawings not all teeth of sprockets 166 and 168 are shown.

Between the inner ring gear 166 and the outer ring gear 168, a coaxial guide disk 172 is arranged with the same, which extend in a radial direction to the tips of the Teeth of sprockets 166 and 168 extend and into the guide groove 160 between the inner row of teeth 156 and the outer Row of teeth 158 of the base part 130 engages. Through this Guide disc 172 is prevented that the double gear 170 during rolling on tooth rows 156 and 158 moved perpendicular to the pull-out direction 104. This ensures that the gear rings 166 and 168 of the double gear 170 always in engagement with the rows of teeth 156 and 158 of the base part 130.

The double gear 170 arranged on the right of the insert 106 is arranged with a corresponding one, to the left of the insert 106 Double gear (not shown in the drawings) 170 by means of a common synchronization shaft 174, which carries both double gears 170, rigidly connected. The Synchronization shaft 174 is mounted in bearing brackets 176, which are fixed to the insert 106.

The two double gears 170 and the synchronization shaft 174 together form a first parallel guide element 178 of the parallel extension 100.

As shown in Figures 1, 2 and 4, the guide recess takes 144 of the front portion 142 of the base part 130 in the inserted state of the parallel extension guide 100 an essentially cuboidal extension part 180, that when inserted with its inside on the inner guide leg 146 and with its outside on the outer guide leg 148 abuts and with its underside rests on the top of the guide projection 150.

This position of the extension part 180 is as follows referred to as its insertion position.

The extension member 180 carries at the front edge of it The underside of a stop nose 182 projecting downwards Back of a front stop surface 184 of the extension part 180 forms.

The extension part 180 also has at the rear edge on its underside a rear stop nose protruding downwards 186 on, the front of a rear stop surface 188 of the extension part 180 forms.

The extension part 180 carries one on its rear side hooks projecting rearward along the pull-out direction 104 190, in which a hook-shaped end 192 of a tension coil spring 194 is mounted. The tension coil spring 194 extends along the extension direction 104 by one on the underside of the rear region 140 of the base part 130 Spring tunnel 196 and is hook-shaped on a rear End 198 hung on a retaining pin 200 that is vertical to the pull-out direction 104 through the spring tunnel 196 extends and held on the side walls of the spring tunnel 196 is.

For the sake of clarity are in the drawings not all turns of the tension coil spring 194 are shown.

The extension part 180 is on its top with a the inner partial tooth row adjacent to the inner edge of this upper side 202 and one adjacent to the outer edge of this top outer row of teeth 204 provided. The two Partial tooth rows 202 and 204 of the extension part 180 extend parallel to each other along the direction of extension 104 and are in the pull-out direction 104 by half a tooth spacing offset against each other.

For the sake of clarity are in the drawings not all teeth of the partial tooth rows 202 and 204 are shown.

Between the inner part tooth row 202 and the outer part tooth row 204 of the extension part 180 extends longitudinally the pull-out direction 104, a guide groove 206, which the partial rows of teeth 202 and 204 separates from each other.

The width of the inner row of teeth 202 and the outer Partial tooth row 204 of the extension part 180 is in each case just over half the width of the inner row of teeth 156 or the outer row of teeth 158 of the base part 130. Die Width of the inner part tooth row 202 and the outer part tooth row 204 of the extension part 180 corresponds together with the width of the inner row of teeth 162 or the outer Partial tooth row 164 of the inner guide leg 146 or of the outer guide leg 148 the width of the inner Row of teeth 156 or the outer row of teeth 158 of the base part 130th

The inner side wall of the extension part facing the insert 106 180 and the outer body 102 facing Side wall of the extension part 180 are each one Passes through slot 208, which opens into the guide groove 206 and extends along the extension direction 104 (see FIG. 2).

In each of the slots 208 there is a locking lever 210 by means of one pivot pin 212 each perpendicular to the Extension direction 104 and perpendicular to the top of the extension part 180 pivot axis 214 pivotable stored (see Fig. 4).

Each of the detent levers 210 includes one in the extending direction 104 arranged in front of the pivot axis 214 locking arm 216 and one in the pull-out direction 104 behind the pivot axis 214 arranged rear guide arm 218.

The locking arms 216 of the pair of locking levers 210 each carry one protruding toward the other locking lever 210 front stop nose 220 and one from the other Latch lever 210 protruding tab 222. The facing each other Side faces of the front stop lugs 220 of the two Latch levers 210 serve as front stop surfaces 224 which in the insertion position of the extension part shown in FIG. 4 180 abut each other. The backs of the front Stop lugs 220 each form a driving surface 226, the insertion position shown in Fig. 4 on the front one in the guide groove 206 of the extension part 180 engaging on the side wall 108 of the insert 106 fixed driver 228 is present.

The side surfaces of the locking lugs 222 facing away from one another Latch levers 210 serve as front guide surfaces 230, which in the insertion position shown in Fig. 4 on the outside of the inner guide leg 146 or on the inside of the outer guide leg 148 of the base part 130 issue.

The rear sides of the locking lugs 222 serve as locking surfaces 232, as will be explained in more detail below.

The guide arms 218 of the pair of locking levers 210 each carry one protruding toward the respective other locking lever 210 rear stop lug 234. The side surfaces facing each other the rear stop lugs 234, the locking lever 210 form rear stop surfaces 236.

The side surfaces of the guide arms 218 facing away from one another the detent lever 210 serve as rear guide surfaces 238 which in the insertion position shown in Fig. 4 on the outside of the inner guide leg 146 or on the inside of the outer guide leg 148 of the base part 130 issue.

The base parts arranged to the left and right of the insert 106 130 and extension parts 180 form together second parallel guide element 239 of the parallel extension guide 100th

The operation of the parallel pull-out version described above 100 is the following:

In the inserted shown in Figures 1 to 4 The state of the parallel extension version 100 is the extension part 180 in its insertion position, in which the front stop surface 184 of the front stop nose 182 des Displacement part 180 on the front stop surface 152 of the Guide projection 150 of the base part 130 abuts.

If the insert 106 is pulled out of the body in the pull-out direction 104 102 is pulled out, it moves on the insert 106 fixed driver 228 due to the contact with the in the direction of movement of the driver 228 in front of the same driving surfaces 226 the locking lever 210 the extension part 180 along the pull-out direction 104 from the guide recess 144 of the base part 130 out.

This is work against the traction of the one hand on the Extension part 180 and on the other hand on the base part 130 fixed tension coil spring 194 performed as an elastic Energy is stored in the tension coil spring 194 and when the insert 106 is reinserted later is available for a final feed movement.

While the driver 228 through the guide groove 206 of the Extension part 180 moves, prevents contact of the front and rear guide surfaces 230 and 238 of the locking lever 210 with the outside of the inner guide leg 146 or with the inside of the outer guide leg 148 of the base part 130 that the locking lever 210 to the respective Swivel pivot axes 214 and the driving surfaces 226 of the Locking lever 210 are moved out of the path of the driver 228.

However, if the extension part 180 is the same as that shown in FIGS to 7 position shown, the following as its extension position is reached, the front stand Stop lugs 220 of the locking lever 210 over the front Ends of the guide legs 146 and 148 in front, so that now the locking lever 210 is pivoted about the respective pivot axis 214 and the driving surfaces 226 from the path of the driver 228 can be removed, especially in FIG. 7 is clearly visible.

In this extended position of the extension part 180 are the locking surfaces 232 of the locking lugs 222 of the locking lever 210 on the front sides of the inner guide leg 146 and the outer guide leg 148 and thus prevent the extension part 180 by the tensile force of the tension coil spring 194 in the insertion position is moved back. The extension part 180 is thus in the extension position through the cooperation of the Lugs 222 and the locking surfaces 240 with the base part 130 locked.

If the insert 106 and thus the driver 228 are pulled out further, until the one shown in FIGS. 5 to 7 is complete extended state of the parallel pull-out version 100 reached the extension part 180 does not move more with the driver 228, but remains in its Extension position in which the rear stop surface 188 of the rear stop lug 186 of the extension part 180 on the rear stop surface 154 of the guide projection 150 of the base part 130 abuts.

In this extended position form the inner row of teeth 202 and the outer part row of teeth 204 of the extension part 180 one over the front 128 of the body 102 protruding extension of the inner row of teeth 162 and the inner row of teeth 156 of the base part 130 or the outer Part tooth row 164 and the outer tooth row 158 of the base part 130. The one following the driver 228 at a constant distance Double gear 170, at the beginning of the extraction process first on the rows of teeth 156 and 158 of the rear area 140 of the base part 130, then on the partial tooth rows 162 and 164 of the front portion 142 of the base 130 and finally on the partial tooth rows 202 and 204 of the extension part 180 rolls, in the pull-out direction 104 over the Front 128 of the body 102 are moved out so that a full extension of the drawer 106 from the body 102 is possible.

By using two sprockets 166 and 168 is even then a sufficient engagement between the teeth of the Double gear 170 and the base part 130 and the extension part 180 guaranteed when the double gear 170 over the partial tooth rows 162 having a reduced width, 164, 202 or 204 rolls.

Since the total of two double gears 170, which means the synchronization shaft 174 rigidly connected to each other are comprehensive first parallel guide element 178 by the two base parts 130 and two extension parts 180 comprehensive second parallel guide element 239 always parallel to the pull-out direction 104 is an exact one Parallel guidance of a very wide slide-in 106 for Pulling out of the body 102 or when pushing it into the same guaranteed.

When inserting the insert 106 into the body 102 the insert 106 and thus the driver 228 against the Pull-out direction 104 moves.

In the course of this movement, the driver 228 runs into the intermediate space between the locking levers 210 and presses the guide arms 218 apart, so that the locking lever 210 around the respective pivot axis 214 are pivoted and the locking surfaces 232 no longer rest against the blocking surfaces 240. Thereby the extension part 180 is unlocked and is by the tension coil spring 194 backwards into the guide recess 144 pulled in until the front stop surface 184 of the front Stop lug 182 of the extension part 180 in the insertion position of the extension part 180 again at the front Stop surface 152 of the guide projection 150 of the base part 130 is present.

Since due to the driver acting as an entrainer 228 triggered pivoting movement of the locking lever 210, the driving surfaces 226 bear against the front of the driver 228, the driver 228 is moved with the extension part 180, until the insertion position of the extension part reaches 180 is. On the other hand, since the driver 228 on the insert 106 is fixed, the insert 106 is thus by the tensile force the tension coil spring 194 via a feed path that that of the extension part 180 when moving from the insertion position put back into the extended position Distance corresponds to that shown in Figures 1 to 4 Inserted end position.

For the insertion of the insert 106 into the insert end position becomes when pulling out the insert 106 in the tension coil spring 194 stored energy expended.

When inserting insert 106, the double gear wheel rolls 170 initially over the partial rows of teeth 202 and 204 of the extension part 180, then over the partial rows of teeth 162 and 164 of the front portion 142 of the base 130 and finally over the back rows 156 and 158 140 of the base part 130.

A second embodiment shown in Figures 8 to 12 a parallel pull-out version 100 differs from the first embodiment described above only with regard to the design of the extension part and Driver and in that an additional return driver is provided for the extension part.

The extension part shown in Fig. 8 in its insertion position 380 of the second embodiment essentially the shape of a wedge that opposes the Withdrawal direction 104 tapers. In the inserted position the extension part 380 with a front area 381 of it Bottom side on top of the guide projection 150 of the base part 130.

In a rear area of its underside is the extension part 180 with a substantially along the direction of extension 104 extending latching recess 382 provided, the forward through a substantially perpendicular to the Pull-out direction 104 aligned latching surface 432 and after behind by a likewise substantially perpendicular to the Pull-out direction 104 aligned rear stop surface 388 is limited. The bottom 383 of the extension part 380 runs essentially in the area of the recess 382 parallel to the top of the extension part 380.

The extension part 380 carries a hook on its rear side 390, in which in the context of the first Embodiment described the front hook-shaped End 192 of the tension coil spring 194 is hooked.

At its top is the extension part 380 with a the inner partial tooth row adjacent to the inner edge of the upper side 402 and one adjacent to the outer edge of the top outer row of teeth 404 (see Fig. 12). The partial tooth rows 402 and 404 run essentially parallel to the pull-out direction 104, but are in the shown in Fig. 8 insertion position of the extension part 380 at an angle of approximately 5 ° to the horizontal inclined.

One extends between the partial tooth rows 402 and 404 Guide groove 406 into which the guide disc 172 of the double gear 170 can intervene.

The extension part 380 carries one on its front side Coupling head 444, which is enlarged in FIG. 9 and in one Sectional view in Fig. 10 is shown.

The coupling head has on its inside and on its outside 444 each have a backdrop 446, in each a perpendicular to the pull-out direction 104 Driver pin 448, which on a on the side wall 108 of the Insert 106 held, shown in Fig. 12 driver 428 is held, can intervene.

Each slide track 446 has an inlet area that is open to the front 450 for one of the driver pins 448 to which each have a sliding channel running obliquely downwards to the rear 452 connects.

The lower end region of each shift channel 452 becomes after limited at the front by a driving surface 426. Between the Driving surface 426 and the lower edge of the inlet area 450 extends a front sliding bevel 454. A the front sliding bevel 454 opposite side wall of the sliding channel 452 forms a rear sliding slope 456th

Furthermore, the coupling head 444 on its inside and on on its outside a return recess 458, which below the inlet area 450 of the slide 446 and in the pull-out direction 104 in front of the sliding channel 452 is.

In the pull-out direction 104 in front of each return recess 458 is an elastic tongue 460 on the coupling head 444 arranged transversely to the pull-out direction 104 of the Coupling head 444 protrudes from the front of the coupling head 444 seen from the direction of extension 104, covers the associated return recess 458.

By pressing on a front 462 one of the elastic Tongues 460 can be the relevant elastic tongue 460 to the Coupling head 444 are bent so that the path is opposite the pull-out direction 104 into the associated return recess 458 is released. One back of each elastic Tab 460 serves as return surface 464, as follows will be explained in more detail.

Furthermore, the coupling head 444 has at the lower edge of it Front one to the side of the insert 106 or to the On the side of the body 102 protruding stop lug 466, the Back serves as a front stop surface 468. The front Stop surfaces 468 act in the insertion position of the extension part 380 with in the front area 142 of the Base part 130 arranged stop surfaces 470 (see Fig. 12) together to follow the movement of the extension member 380 to be restricted at the back against the pull-out direction 104.

Coupling head 444 also has at the rear edge thereof Top of a transverse to the pull-out direction 104, Return driving surface rising in the direction of extension 104 471, which are so designed and arranged is that it is in the insertion position of the extension part 380 with one in the pull-out direction 104 in front of the Double gear 170 arranged return driver 472 can work together.

The return driver 472 is fixed to the insert 106 and comprises a wedge-shaped holding plate 474 which extends in the pull-out direction 104 tapers and at the bottom one essentially rectangular, horizontally aligned driver plate 476 is molded.

The return driver 472 can, for example, on the Insert 106 be fixed that the holding plate 474 and Driver plate 476 on a corner connector 478 of the insert 106, in particular on a corner connector for an insert serving hanging frame, are molded, as in the figures 13 and 14.

A bracket can also be attached to such a corner connector 478 376 for the synchronization shaft 174 of the double gears 170 be formed, creating a constant distance between the double gears 170 and the respective return drivers 472 is guaranteed.

The return driver 472 serves the extension part 380 to bring back from the inserted position to the extended position, if the extension part 380 is at partial extended insert 106 unintentionally from the Extended position has moved into the insertion position, such as will be explained in more detail below.

In addition, the return driver 472 covers one in the pull-out direction 104 in front of the double gear 170 Area of the rows of teeth 156 and 158 of the base part 130, the Partial tooth rows 162 and 164 of the base part 130 or the partial tooth rows 402 and 404 of the extension part 380 and prevented so that when pulling out or pushing in the insert 106 any objects between the sprockets 166 and 168 of the double gear 170 on the one hand and the aforementioned Rows of teeth on the other hand. Thus the Return driver 472 of the second embodiment at the same time as a cover apron for the double gear 170.

Otherwise, the second embodiment of a parallel pull-out design is correct 100 in terms of its structure with the above described first embodiment, so that so far reference to the description of the first embodiment is taken.

The operation of the second embodiment of a Parallel extension version 100 is the following:

In the inserted state shown in FIG Parallel extension version 100 is the extension part 380 in its retracted position, in which the front stop surfaces 468 of the stop lugs 466 of the coupling head 444 abut the stop surfaces 470 of the base part 130 and the Bottom of the extension part 380 on top of the Guide projection 150 of the base part 130 rests.

In this insertion position of the extension part 380 engages each of the driver pins 448 of the driver 428 into the shift channel 452 of the associated slide 446 on.

The drawer 106 moves forward in the pull-out direction 104 extended, the driver 428 also moves in the pull-out direction 104 and leads the extension part 380 against the tensile force of the tension coil spring 194 with it, since the driving surfaces 426 of the shift channels 452 in the direction of movement lie in front of the driver pin 448.

By the linear movement of the extension part 380 along the pull-out direction 104, the tension coil spring 194 tense and absorbs elastic energy that the Slide the drawer 106 back in for a final feed movement can be used.

If the driver 428 extends the extension part 380 so far the guide recess 144 of the base part 130 pulled out has that the front portion 381 of the bottom of the extension part 380 no longer in contact with the top of the Guide projection 150 of the base part 130 is pivoted Extension part 380 by a perpendicular to the direction of extension 104 passing through the rear edge of its underside Swivel axis down until the bottom 383 of the Extension part 380 in the area of the recess 382 the top of the guide protrusion 150 of the base part 130 rests and the locking surface 432 on the locking surface 440 serving front of the guide projection 150 of the base part 130 is present. This position is the extension position of the extension part 380 of the second embodiment the parallel extension version 100.

The partial rows of teeth run in this extended position 402 and 404 of the extension part 380 horizontally, so that the Double gear 170 can roll on these partial rows of teeth.

Move the extension part 380 during this pivoting movement the driver pin 448 of the driver 428 in the displacement channels 452 along the front sliding bevels 454 up into the respective inlet area 450, from where they can continue their movement in the pull-out direction 104, without carrying the extension part 380 with it, until the one shown in FIGS. 11 and 12 is complete extended state of the parallel pull-out version 100 reached is.

The fact that the locking surface 432 of the locking recess 382 in the Extension position of the extension part 380 on the Locking surface 440 of the base part 130 abuts, is the extension part 380 locked in the extended position and can not by the tensile force of the tension coil spring 194 in the Insert position are moved.

Due to environmental influences, such as vibrations or unwanted Touching the extension part 380, however, can happen that the extension part 380 unintentionally unlocked and then due to the tension of the tension coil spring 194 is moved into the insertion position without the Driver pin 448 engages with the sliding channels 452 stand.

In such a case, the extension part 380 must first be brought back into the extension position before a Slide the insert 106 back into the end insert position can be done.

For returning the extension part 380 to the extension position the insert 106 is inserted until the driver pins 448 the front sides 462 of the elastic Tongues 460 of the coupling head 444 reach them to the side Press and get into the return recesses 458.

Then the insert 106 and with it the driver pins 448 moved forward in the direction of extension 104, the driver pins 448 from behind against the return surfaces Press 464 of the elastic tongues 460 and so that Extension part 480 against the tensile force of the tension coil spring 194 from the inserted position to the extended position retrieve.

When the extension position is reached, the extension part swivels 380 in the manner described above below, with the driver pin 448 relative to the Coupling head 444 along the return surfaces 464 of the elastic Tongues 460 up over the top of the elastic Move tongues 460 out of the return recesses 458, so that the driver pin 448 then can move forward along the extension direction 104, without taking the extension part 380 with it.

After such a return process, the insert 106 can be used again fully inserted.

When the extension member 380 is in a partially extended State of the parallel pull-out version 100, in which the Return driver 472 in the pull-out direction 104 behind the Coupling head 444 of the extension part 380 is located, unintentionally unlocked and due to the tension of the tension coil spring 194 is moved into the insertion position, so it can Extension part 380 alternatively to that described above Procedure also using the return driver 472 be brought back into the extended position.

For this purpose, the insert 106 and thus the return driver 472 moved forward in the pull-out direction 104 until the front the driver plate 476 of the return driver 472 with the return driving surface 471 of the coupling head 444 of the extension part 380 is in contact. If continued Forward movement of the return driver 472 along the Extending direction 104, the extension part 380 of the Return driver 472 pulled until the extension part 380 when reaching the extension position in the above described pivots downward, the driver plate 476 relative to the coupling head 444 along the Return driving area 471 up over the top of the Coupling head 444 moved out so that the return driver 471 then continue along the pull-out direction 104 can move forward without the extension piece 380 take.

After such a return process, the insert 106 can be used again fully inserted.

The distance between the front of the drive plate 476 and the axis of rotation of the double gear 170 is at least as large as the distance between the return driving area 471 and the rear end of the partial tooth rows 402 and 404 of the extension part 380, so that the double gear 170 with the extension part in the inserted position Move 380 far enough in the direction of extension 104 can to get the return driver 472 in contact with the Bring return driving surface 471 without the rolling motion of the double gear 170 through the (in the inserted position of the extension part 380 inclined to the horizontal) Part tooth rows 402 and 404 of the extension part 380 is hindered.

The driver pins run when the insert 106 is inserted 448 through the inlet areas 450 against the respective rear Slope 456 of the shift channels 452, whereby the extension part 380 is pivoted upwards so that the locking surface 432 no longer the locking surface 440 of the base part 130 faces and thus the extension part 380 is unlocked.

The unlocked extension part 380 is due to the tensile force the tension coil spring 194 along the extension direction 104 pulled back until the front stop surfaces 468 of the Stop lugs 466 on the stop surfaces 470 of the base part 130 concerns.

Since the driver pin 448 in the direction of movement of the extension part 380 in front of the driving surfaces 426 of the shift channels 452 are arranged, the driver pins 448 and thus the driver 428 and the one connected to it Insert 106 pulled by the extension part 380 so that the insert 106 via a feed path which is the same as that during the movement of the extension part 380 from the insertion position in the extended position corresponds to the distance covered, is pulled into the end insertion position. The one spent Energy corresponds to the energy that is needed when pulling out the Insert 106 was stored in the tension coil spring 194.

Otherwise, the second embodiment of a parallel pull-out design is correct 100 in terms of their function with the above described first embodiment, so that so far reference to the description of the first embodiment is taken.

Claims (34)

1. A parallel withdrawal guide for an insert (106) that is adapted to be withdrawn from a body (102) in a direction of withdrawal (104), comprising
   withdrawal guides (110) which are provided for each opposite side of the insert (106) and which each comprise at least two guide rails (118, 120, 124), of which a first is connectible to the body (102) and a second is connectible to the insert (106), and
   a parallel guide arrangement for the withdrawal guides (110)
   comprising a first parallel guide element, which has two rollers (170) that are rigidly connected by a shaft (174), and
   comprising a second parallel guide element which, for each roller (170), has a base portion (130) provided with a first rolling strip and an extension piece (180; 380) that is provided with a second rolling strip and is moveable relative to the base portion (130) from an inserted position, in which the extension piece (180; 380) is located when the insert is fully inserted into the body (102), into an extended position in which the second rolling strip forms an extension of the first rolling strip,
   wherein the one parallel guide element is arranged to be stationary on the body (102) and the other parallel guide element is moveable with the insert (106),
   characterised in that
   the extension piece (180; 380) is displaceable relative to the base portion (130) in a substantially linear manner.
2. A parallel withdrawal guide in accordance with Claim 1, characterised in that the extension piece (180; 380) is displaceable relative to the base portion (130) in the direction of withdrawal (104).
3. A parallel withdrawal guide in accordance with Claim 2, characterised in that the movement of the extension piece (180) relative to the base portion (130) from the inserted position into the extended position is exclusively a displacement of the extension piece (180) in the direction of withdrawal.
4. A parallel withdrawal guide in accordance with any of the Claims 1 to 3, characterised in that the extension piece (180; 380) comprises a driver face (226; 426) which is engaged by a driver (228; 428) during the withdrawal of the insert (106) in such a manner that the extension piece (180; 380) is moved from the inserted position into the extended position.
5. A parallel withdrawal guide in accordance with Claim 4, characterised in that, during the withdrawal of the insert, the driver face (226; 426) of the extension piece (180; 380) is disposed in the track of the driver (228; 428) and in front thereof in the direction of movement of the driver (228; 428).
6. A parallel withdrawal guide in accordance with Claim 5, characterised in that, upon reaching the extended position, the driver face (226; 426) of the extension piece (180; 380) is moveable from the track of the driver (228; 428).
7. A parallel withdrawal guide in accordance with Claim 6, characterised in that, upon reaching the extended position, the driver face (226; 426) of the extension piece (180; 380) is pivotal from the track of the driver (228; 428).
8. A parallel withdrawal guide in accordance with Claim 7, characterised in that, upon reaching the extended position, the driver face (426) is pivotal from the track of the driver (428) by means of a pivotal movement of the extension piece (380).
9. A parallel withdrawal guide in accordance with either of the Claims 6 or 7, characterised in that the extension piece (180) comprises a coupling element (210) on which the driver face (226) is arranged and which is moveable, and in particular, is pivotal, relative to the extension piece (180).
10. A parallel withdrawal guide in accordance with any of the Claims 1 to 9, characterised in that the extension piece (180; 380) is latchable in the extended position.
11. A parallel withdrawal guide in accordance with Claim 10, characterised in that the extension piece (180; 380) is automatically latched in the extended position during the withdrawal of the insert (106).
12. A parallel withdrawal guide in accordance with either of the Claims 10 or 11, characterised in that the extension piece (180; 380) comprises a latching face (232; 432) that is adapted to be moved into engagement with a locking face (240; 440), which is preferably arranged on the base portion (130), upon reaching the extended position.
13. A parallel withdrawal guide in accordance with Claim 12, characterised in that the extension piece (180; 380) comprises a releasing element (218; 456) which is struck by an unlatching means (228; 428) during the insertion of the insert (106), and in that the latching face (232; 432) is coupled to the releasing element (218; 456) in such a manner that the latching face (232; 432) becomes disengaged from the locking face (240; 440) when the unlatching means (228; 428) strikes the releasing element (218; 456).
14. A parallel withdrawal guide in accordance with Claim 13, characterised in that the releasing element is a displacement slope (456).
15. A parallel withdrawal guide in accordance with either of the Claims 13 or 14, characterised in that the unlatching means (228; 428) serves as a driver (228; 428) during the withdrawal of the insert (106) and moves the extension piece (180; 380) from the inserted position into the extended position.
16. A parallel withdrawal guide in accordance with any of the Claims 1 to 15, characterised in that the extension piece (380) comprises a restoring face (464, 471) with which a driver (428, 472) is adapted to be moved into engagement by the insertion of the insert (106) when the extension piece (380) is in the inserted position and which is engaged by the driver (428, 472) during withdrawal of the insert (106) in such a manner that the extension piece (380) is moved from the inserted position into the extended position.
17. A parallel withdrawal guide in accordance with Claim 16, characterised in that the extension piece (380) comprises a restoring element (460) which is disposed in the track of the driver (428) and is adapted to be ousted from the track of the driver (428) during the insertion of the insert (106) in such a manner that the driver (428) is movable into engagement with the restoring face (464) when the extension piece (380) is in the inserted position.
18. A parallel withdrawal guide in accordance with any of the Claims 1 to 17, characterised in that the extension piece (180; 380) comprises a stop (182; 466) which limits the movement of the extension piece (180; 380) into the inserted position during the insertion of the insert (102).
19. A parallel withdrawal guide in accordance with any of the Claims 1 to 18, characterised in that the parallel withdrawal guide (100) comprises an energy storing means which absorbs energy in the course of the movement of the extension piece (180; 380) from the inserted position into the extended position, whereby, during the insertion process, the insert (106) is moveable over an insertion path into a fully inserted position by means of the absorbed and stored energy.
20. A parallel withdrawal guide in accordance with Claim 19, characterised in that the extension piece (180; 380) is moveable into the inserted position by means of the stored energy .
21. A parallel withdrawal guide in accordance with either of the Claims 19 or 20, characterised in that the energy storing means is a resilient energy storing means (194) which engages with the extension piece (180; 380).
22. A parallel withdrawal guide in accordance with Claim 21, characterised in that the resilient energy storing means (194) is arranged at least partially in a recess (196) that is provided in the base portion (130).
23. A parallel withdrawal guide in accordance with any of the Claims 1 to 22, characterised in that the rollers are in the form of gearwheels (170), and in that the first and second rolling strips are provided with rows of teeth (156, 158, 162, 164, 202, 204; 402, 404).
24. A parallel withdrawal guide in accordance with Claim 23, characterised in that the gearwheels (170) each comprise at least two axially displaced gear rings (166, 168), and in that the first and second rolling strips each comprise at least two rows of teeth (156, 158, 162, 164, 202, 204; 402, 404) that are mutually displaced perpendicularly relative to the direction of roll of the gearwheels (170).
25. A parallel withdrawal guide in accordance with Claim 24, characterised in that the gear rings (166, 168) of the gearwheels (170) are mutually displaced in the peripheral direction by half the spacing between the teeth, and in that the rows of teeth (156, 158, 162, 164, 202, 204; 402, 404) of the first and second rolling strips are mutually displaced in the direction of roll of the gearwheels (170) by half the spacing between the teeth.
26. A parallel withdrawal guide in accordance with either of the Claims 24 or 25, characterised in that the gearwheels (170) each comprise a guide disc (172) which is arranged between the gear rings (166; 168) and engages in an intermediary space (160) between the rows of teeth (156, 158, 162, 164, 202, 204; 402, 404) of the first or second rolling strips.
27. A parallel withdrawal guide in accordance with any of the Claims 1 to 26, characterised in that the extension piece (180; 380) is accommodated in a recess (144) in the base portion (130) when in the inserted position.
28. A parallel withdrawal guide in accordance with Claim 27, characterised in that, in the inserted position, the extension piece (180; 380) abuts at least one arm (146, 148) of the base portion (130) that is provided with a rolling strip, whereby the rolling strip on the arm (146, 148) and the rolling strip on the extension piece (180; 380) complement each other to constitute a rolling strip of greater width.
29. A parallel withdrawal guide in accordance with any of the Claims 1 to 28, characterised in that the extension piece (180; 380) is guided in displaceable manner in a recess (144) in the base portion (130).
30. A parallel withdrawal guide in accordance with any of the Claims 1 to 29, characterised in that the extension piece (180; 380) comprises a stop (182; 466) which abuts the base portion (130) when in the inserted position.
31. A parallel withdrawal guide in accordance with any of the Claims 1 to 30, characterised in that the parallel withdrawal guide (100) comprises for each roller (170) a covering apron (472) which covers a region of the respective first or second rolling strip which is located in front of the roller (170) in the direction of roll.
32. A parallel withdrawal guide in accordance with Claim 31, characterised in that the covering apron (472) is rigidly connected to a mounting means (376) of the shaft (174) which connects the rollers (170) together.
33. A parallel withdrawal guide in accordance with Claim 32, characterised in that the covering apron (472) and the mounting means (376) are held by an angle connector (478), and in particular an angle connector for an insert (106) in the form of a suspension frame.
34. A parallel withdrawal guide in accordance with any of the Claims 1 to 33, characterised in that the withdrawal guides (110) each comprise at least three guide rails (118, 120, 124).

Images