ES2640977T3 - Telescopic guide rail - Google Patents

Abstract

Telescopic guide rail (1) for removable furniture parts such as drawers or the like, comprising a body rail (2) attachable to a furniture body, a raceway (3) that can be joined with a removable furniture part and a central rail (4) disposed between the body rail (2) and the raceway (3) and which extends the extraction, as well as a development control (5), by means of which the raceway (3) it is coupled with the center rail (4) during extension out of the closed position until the center rail (4) has reached its maximum extraction position and is locked in this position with respect to the body rail (2) by disengaging simultaneously the raceway (3) of the central rail (4) and the central rail (4) can move again in the closing direction with respect to the body rail (2) only when the raceway (3) is moved to the maximum in the direction of insertion n with respect to the central lane (4) initially locked and, thereby, be coupled again with the central lane (4), characterized in that the development control (5) consists of a coupling member (6) provided with two sliding guides (6a, 6b) that run specularly symmetrically between them and of a first sliding block (7) fixed to the body rail (2) and associated with a first of the sliding guides (6a) and a second Sliding block (8) fixed to the raceway (3) and associated with the second sliding guide (6b), for which purpose the coupling member (6) is pivotably supported around an axis (9) that runs perpendicular to the plane of displacement of the telescopic guide rail (1) arranged horizontally in use position and the slide guides (6a, 6b) run in a V-shape relative to each other such that, when entering the first slide block (7) in the first slide guide (6a) asoc In addition thereto, there is a switching of the coupling member (6) and a concomitant release of the second slide block (8) with respect to the second slide guide (6b) associated thereto and vice versa.

Description

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DESCRIPTION

Telescopic crane rail

The present invention relates to a telescopic crane rail for extrafoles furniture parts such as drawers or the like, comprising a body rail that can be fixed to a furniture body, a raceway that can be joined with an extrafole piece of furniture and a rail center arranged between the body rail and the raceway and prolonging the extraction, as well as a development control, by means of which the raceway is coupled to the center rail during the extension out of the closing position until the central rail has reached its maximum extraction position and is locked in this position with respect to the body rail while simultaneously uncoupling the center rail raceway and the center rail can move again in the closing direction with respect to the body rail only when the raceway is displaced to the maximum in the direction of insertion with respect to the initially locked center lane In and with it, it is coupled again with the center rail.

The telescopic crane rails of the type according to the preamble are known in various embodiments. Thus, for example, the so-called "quadro removable parts" are known in which, in the area of the raceways, rolling bodies in the form of balls are provided. Telescopic crane rails of this type are especially supportive. In telescopic crane rails of this type, the body rail, the central rail that extends the extraction and the raceway that can be joined with the removable furniture part are arranged vertically one above the other in the use position.

There are also telescopic crane rails of the type according to the preamble in which the substantially C-shaped profiles of the body rail, the central rail that extends the extraction and the raceway are arranged horizontally side by side in use position.

With respect to the development control, different embodiments are also known, the development controls being arranged in the area of the raceways of the telescopic crane rails. Therefore, the bearing capacity of the telescopic crane rails can be adversely affected, in particular when, thanks to the provision of a development control, a part of the raceways cannot be equipped with balls to increase the bearing capacity.

Telescopic crane rails with a development control are also known that are not arranged in the area of the raceways of the balls. Such telescopic crane rails are disclosed in patents DE 296 21 957 U1 and EP 0 620 993 A1.

The present invention is based on the problem of creating a telescopic crane rail of the type according to the preamble that is distinguished by an especially simple development control and that does not undermine in any way the bearing capacity of the telescopic crane rail.

A solution of this problem consists in accordance with the invention in which the development control consists of a coupling member provided with two slide cranes running specularly symmetrically between them and a first slide block fixed to the body rail and associated with a first row of the sliding cranes and a second sliding block fixed to the raceway and associated to the second sliding track, the coupling member being pivotably arranged around an axis that runs perpendicularly to the rail travel plane of telescopic crane and the sliding cranes, run deployed in a V-shape with respect to each other, so that, upon entering the first sliding part in the first sliding crane associated with it, a switching of the coupling member and a concomitant release of the second sliding block with respect to the second sliding grid associated with it and vice versa.

This solution provided is intended for a telescopic crane rail in which the body rail, the center rail and the raceway are arranged vertically in use position one above the other. The development control according to the invention can in this case be very advantageously disposed outside the area of the raceways of the individual rail elements and, therefore, does not in any way impair the bearing capacity of the entire crane track. telescopic, not even especially when it is equipped with ball-shaped rolling bodies in the area of the raceways. In addition, the telescopic crane track according to the invention is distinguished by the fact that the development control has an extremely simple and simple structure and, finally, consists only of the coupling member with the sliding cranes and the connected sliding parts, on the one hand , with the body rail and, on the other hand, with the raceway.

Another solution of the problem according to the invention consists in that the development control consists of a coupling member provided with two sliding cranes that run specularly symmetrically between them and a first sliding block fixed to the body rail and associated with a first row of the slide rails and a second slide block fixed to the raceway and associated with the second slide rack, being

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arranged the coupling member pivotably about an axis that runs parallel to the plane of displacement of the telescopic gma rail and the sliding gums run deployed in a V-shape relative to each other, so that, when entering the first block of In the first sliding range associated with it, there is a switching of the coupling member and a concomitant release of the second sliding block with respect to the second sliding range associated with it and vice versa.

This solution is intended for a gma telescopic rail in which the body rail, the center rail and the raceway are arranged horizontally side by side in use position.

Likewise, the advantages mentioned above apply to this solution.

Also, the process of operation of the development controls is in both cases extraordinarily uncomplicated and simple since the switching of the coupling member is carried out by means of the respective sliding block inserted in the coupling member or in a groove of gma provided here, so that during the switching process itself, a sliding block can be brought to a coupling position and the additional sliding block that is until then in the coupling position can be moved out of position of coupling. Therefore, there is also no possibility of uncontrolled and unwanted displacement in the transition zone for the respective lane element to be blocked, that is, that the central lane, simultaneously with the uncoupling of the raceway, is coupled with the body lane and locks with respect to it, and redprocally also re-engages simultaneously with the raceway when the blockage with respect to the body lane is canceled.

For these switching processes, as already mentioned, only the single components are necessary, so as to guarantee a lasting and disturbance-free operation of a telescopic gma rail of this type.

Other features of the invention are subject to the dependent claims.

Examples of embodiment of the invention that are described in more detail below are represented in the accompanying drawings.

They show:

Figure 1, a perspective representation of a telescopic gma lane according to the invention in a completely contradictory state;

Figure 2, a perspective representation of the telescopic gma according to Figure 1 in an intermediate position of travel;

Figure 3, a perspective representation of the telescopic gma lane according to the invention in an extracted state;

Figures 4a to 4d, plan views of a coupling member of a gma lane development control in different travel positions;

Figure 5, a perspective representation of the coupling member of the development control;

Figure 6, a plan view of the coupling member according to Figure 5,

Figure 7, a perspective representation of a telescopic gma lane with a raceway shown broken according to an example of a further embodiment of the invention;

Figure 8, a view of the telescopic gma lane in the direction of arrow VIII in Figure 7 in total extraction;

Figure 9, the detail designated IX in Figure 8 in enlarged representation;

Figure 10, a view corresponding to Figure 8 of a central rail of the telescopic gma that extends the extraction;

Figure 11, the detail designated with XI in Figure 10 in enlarged representation; Y

Figure 12, a view of a coupling member of the telescopic gma rail according to Figures 7 to 9.

In FIGS. 1 to 3, a fully represented telescopic gma rail comprising a body rail 2 that can be fixed on the side of the body is designated with the reference symbol 1, a raceway 3 that can be attached with a removable part such as , for example, a drawer, and a central rail 4 arranged between the body rail 2 and the raceway 3 and which extends the extraction.

In addition, the telescopic gma lane 1 is provided with a development control 5, by means of which it is ensured that the raceway 3 can move with respect to the central lane 4 only when the central lane 4 is drawn to the maximum with respect to the body lane 2 adjacent to this; furthermore, by means of the rolling control 5 it can be ensured that the central rail 4 can move backwards from its completely removed position to the closing position only when the rolling rail 3 has moved backwards to the maximum in the direction of insertion with with respect to the central lane 4.

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Development control 5 of this type is desired to avoid uncontrolled displacement of the central rail 4 with respect to the rail of the body 2 and / or the raceway 3, resulting in a favorable loading of the rail components. In addition, controlled development has an extraordinarily favorable influence on driving force and lowering.

The development control 5 comprises a coupling member 6 and a first slide block 7 fixed to the body rail 2 as well as a second slide block 8 fixed to the raceway 3.

The term "sliding block" can be considered here as purely conditioned by the operation since the sliding blocks 7 and 8 are pin-shaped components that are fixed, on the one hand, to the body rail 2 and, on the other hand, to the raceway 3.

The coupling member 6, as clearly shown in particular in FIGS. 5 and 6, is provided with a first slide lane 6a and a second slide lane 6b, the two slider lanes 6a and 6b being arranged in a specularly symmetrical manner between them and run substantially deployed in a V-shape relative to each other. In addition, the two slide cranes 6a and 6b are disposed within the coupling member 6 in different planes. In this case, the depth of the sliding cranes 6a and 6b is insignificantly greater than the total thickness of the coupling member 6, so that a hole 6c results in the area of superposition of the two sliding cranes 6a and 6b.

At its end away from the sliding cranes 6a and 6b, the coupling member 6 is equipped with a support hole 6d. This support hole 6d is crossed by a support munon 9 which is connected to a support block 10 stationary fixed to the central rail 4. The axis of the support munon 9 runs perpendicularly to the displacement plane of the entire telescopic crane lane 1 The coupling member 6 is pivotally arranged around this axis within limits.

The first slide block 7 fixed to the body rail 2 is associated with the first slide rail 6a correspondingly facing down.

On the contrary, the second sliding block 8 fixed to the raceway 3 is associated with the second sliding grid 6b facing upwards.

In the position of the telescopic crane rail 1 completely counter-visible visible in figure 1, the second slide block 8 mentioned fits into the second upper slide rail 6b of the coupling member 6, which is shown very clearly in figure 1. Yes Now a removable piece of furniture joined with the raceway 3 is removed from the closed position, the raceway 3 moves correspondingly in the opening direction. In this first opening phase, the central rail 4 is necessarily coupled with the raceway 3 by means of the fitting of the second sliding block 8 in the second sliding lane 6b, so that the raceway 3 first moves together with center lane 4 in the direction of extraction. When the complete extraction path of the central rail 4 has been reached, the first slide block 7 fixed to the body rail 2 reaches the area of the first lower slide rail 6a. In this case, the coupling member 6 is then pivoted about the axis of the support munon 7, thereby causing a release of the blockage between the sliding block 8 that is in the raceway 3 and the member of coupling 6 and, simultaneously, a blockage between the slide block 7 fixed to the body rail 2 and the coupling member 6. This means that from this extraction position, the raceway 3 can be separated from the center rail 4 and completely extracted with respect to this, while, simultaneously, the central rail 4 is secured or locked against backward movement relative to the body rail 2.

Only when the raceway 3 is retracted again in the direction of insertion and the slider 8 fixed to the raceway 3 enters the upper or second sliding lane 6b associated therewith, the coupling member 6 is pivoted again around its axis 7, whereby, on the one hand, a coupling between the central rail 4 and the raceway 3 and a decoupling between the central rail 4 and the body rail 2 is again caused. therefore, the coupled unit constituted by the central rail 4 and the raceway 3 can be moved back to its closed position.

The coupling member 6 is made entirely of a single piece of plastic. Due to the hole 6c in the transition zone between the two slide cranes 6a and 6b, a certain spring elasticity is achieved here through which noise can be greatly damped during the "switching" between the individual coupling states previously described. Additionally, in the support area of the coupling member 6, a damping spring (not shown) can be provided which can also ensure the noise damping during the switching of the coupling member 6.

Figures 4a to 4d show again in schematic representation the development of the switching of the coupling member 6 through the two sliding parts 7 and 8. These cited figures clearly show

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It is clear that, during the extraction of the telescopic crane rail 1 from the closing position or during the contraction returning from the extraction position to the closing position, a desired development is carried out by means of the two sliding blocks 7 and 8. controlled of the central rail 4 and of the raceway 3, so that the raceway 3, starting from the closing position, can move relative to the center rail 4 only when the center rail 4 has been removed to the maximum with respect to the body rail 2 and that - leaving the opening position - the central rail 4 can be retracted with respect to the body rail 2 only when the raceway 3 has moved backwards to its maximum insertion position with respect to the rail central 4.

In contrast to the previously described exemplary embodiment in which the body rail, the center rail and the raceway are arranged vertically one above the other in the use position, an example of embodiment of the invention is shown in drawings 7 to 12 wherein the mentioned rail parts 2, 4, 3 are arranged next to each other horizontally in use position.

This results in the additional difference with respect to the embodiment according to figures 1 to 6, which now consists in the fact that the support world 9 also fixed in this case to the central rail 4 runs parallel to the plane of travel of the entire rail telescopic 1.

The coupling member 6 can now be pivoted again within limits around this support munon 9 and controlled through the sliding parts fixed alternately to the body rail 2 or to the raceway 3, as occurs in the description of the embodiment according to figures 1 to 6.

As shown in FIGS. 10 to 12, the central rail 4, in which the coupling member 6 is pivotably arranged, is provided with two prints 11 running at an angle with respect to each other, to which a recess is associated corresponding 12 of the coupling member 6.

The prints 11 and the recess 12 are arranged in such a way that the coupling member 6 is secured in both possible extreme positions during pivoting against the inadvertent abandonment of this tilting position, that is, the coupling member 6 cannot fall out. of one of the pivoting positions by the force of gravity. Therefore, the possibility of using a telescopic crane rail according to figures 7 to 11 is opened without any modification of a removable piece of furniture both on the left side and on the right side.

Of course, alternatively, the prints 11 can also be provided in the coupling member 6 and, consequently, the corresponding recesses can be provided in the central rail 4. Furthermore, it is also imaginable that, instead of continuous linear prints 11 and continuous rebates correspondingly linear 12, for example, are provided respective protrusions in one of the corresponding components and corresponding holes or holes in the other respective component to be able to fix the position of the coupling member 6 in its possible extreme positions. Also, for this purpose, magnetic zones can be provided in said components.

As shown in particular also in Figure 12, the coupling member 6 which is completely manufactured again of a plastic, is provided in the area of its support hole 6d with a hole 13 within which souls 14 are arranged configured as a spring, which support the central area 15 with the support hole 6d. Therefore, this central area 15 of the coupling member 6 presenting the support hole 6d can be elastic within limits in the direction of travel and, therefore, can be damped.

In the exemplary embodiment according to Figures 7 to 12, the coupling member 6 is arranged on the side of the central rail 4 turned towards the raceway 3. So that the sliding block 7 fixed to the body rail 2 can cooperate without problems with the coupling member 6, a hole 16 is provided in the area of the central rail 4 through which at least the corresponding area of the control curve of the coupling member 6 associated with the sliding block 7 extends.

Alternatively, it is also possible to imagine the support of the coupling member 6 between the body rail 2 and the central rail 4, then, of course, the hole 16 must then be traversed through the corresponding area of the coupling member 6 in the direction of the rail rolling 3.

Likewise, it is imaginable to dismantle the coupling member 6 in its support area and provide support on both sides of the central rail 4.

Since the function of development control 5 in the example of embodiment according to Figures 7 to 12 does not differ from the example of embodiment according to Figures 1 to 6, a detailed repetition of the description of this development of this development can be waived functioning. It should only be noted that the examples of realization

represented differ in that the positions of the support worlds 9, around which the coupling members 6 can pivot, are arranged with a 90 ° offset between them, in accordance with the different construction and the different position of the parts lane 2 to 4 between them, as already mentioned above.

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In the description of the embodiments shown, the term "plane of displacement of the telescopic gma lane 1" has been used repeatedly. By this, it should be understood a horizontal plane in a position of use within which a part of removable furniture resting on two telescopic gma rails according to the invention is moved.

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Claims (10)

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Telescopic crane rail (1) for extrafoles furniture parts such as drawers or the like, comprising a body rail (2) attachable to a furniture body, a raceway (3) that can be joined with a piece of furniture extrafole and a central rail (4) disposed between the body rail (2) and the raceway (3) and which extends the extraction, as well as a development control (5), by means of which the raceway ( 3) is coupled with the center rail (4) during extension out of the closed position until the center rail (4) has reached its maximum extraction position and is locked in this position with respect to the body rail (2 ) simultaneously disengaging the raceway (3) from the center lane (4) and the center lane (4) can move again in the closing direction with respect to the body lane (2) only when the raceway (3) is displaced to the maximum in the direction of insertion with respect to the central lane (4) initially locked and, with it, is re-coupled with the central lane (4), characterized in that the development control (5) consists of a coupling member (6) provided with two slide rails ( 6a, 6b) that run specularly symmetrically between them and of a first sliding block (7) fixed to the body rail (2) and associated with a first of the sliding grains (6a) and a second sliding block ( 8) fixed to the raceway (3) and associated to the second slide crane (6b), for which purpose the coupling member (6) is pivotally supported around an axis (9) that runs perpendicularly to the plane of displacement of the telescopic crane rail (1) arranged horizontally in the use position and the slide cranes (6a, 6b) run in a V-shape relative to each other such that, when the first sliding block (7) enters the first slide runner (6a) associated with it, a switching of the coupling member (6) and a concomitant release of the second slide block (8) with respect to the second slide crane (6b) associated thereto and vice versa. 2. Telescopic crane track according to claim 1, characterized in that the sliding parts (7, 8) are arranged one above the other in the body rail (2) and the raceway (3) respectively and, correspondingly , the slide cranes (6a, 6b) are arranged in the coupling member (6) in different height planes of the coupling member (6). 3. Telescopic crane lane according to claim 2, characterized in that the depth of the first slide crane (6a) opened down in the direction of the body rail (2) and the depth of the second slide crane (6b) opened upwards in the direction of the raceway (3) are respectively larger than half of the total thickness of the coupling member (6), so that in the overlapping area of the two sliding cranes (6a, 6b) is formed a hole (6c) in the area of the tip of its V-shaped path. 4. Telescopic crane track according to one of the preceding claims, characterized in that the coupling member (6) is entirely manufactured as a single piece of a plastic. 5. Telescopic crane track according to one of the preceding claims, characterized in that the coupling member (6) is pivotally mounted around the axis of a support bolt (9), the support bolt (9) being supported by a support block (10) fixed to the central rail (4). 6. Telescopic crane track according to claim 5, characterized in that damping means are provided in the support area of the coupling member (6) to dampen the noise during the switching of the coupling member (6). 7. Telescopic rail according to claim 6, characterized in that as damping means one or more springs are provided. 8. Telescopic crane rail (1) for removable furniture parts such as drawers or the like, comprising a body rail (2) that can be fixed to a furniture body, a raceway (3) that can be joined with a part of removable furniture and a central rail (4) arranged between the body rail (2) and the raceway (3) and prolonging the extraction, as well as a development control (5), by means of which the rail rolling (3) is coupled with the center rail (4) during extension out of the closed position until the center rail (4) has reached its maximum extraction position and is locked in this position with respect to the body rail (2) simultaneously disengaging the raceway (3) from the center lane (4) and the center lane (4) can be moved again in the closing direction with respect to the body lane (2) only when the raceway ( 3) has moved to the maximum in the direction of insertion with r specifically to the central lane (4) initially locked and, with it, this coupled again with the central lane (4), characterized in that the development control (5) consists of a coupling member (6) provided with two grains of slides (6a, 6b) that run specularly symmetrically between them and of a first slide block (7) fixed to the body rail (2) and associated with a first of the slide rails (6a) and a second block of slide (8) fixed to the raceway (3) and associated with the second slide crane (6b), for which purpose the coupling member (6) is pivotally mounted around an axis (9) running parallel to the plane of travel of the telescopic crane rail (1) arranged horizontally in the position of use, and the sliding cranes (6a, 6b) they run in a V-shape with respect to each other so that, when the first slide block (7) enters the first slide range (6a) associated with it, a switching of the coupling member (6) and a Concomitant release of the second sliding block (8) with respect to the second sliding range (6b) associated with it and vice versa. 5 9. Telescopic gma rail according to one of the preceding claims, characterized in that the central rail (4) is equipped with stamped (11) running at an angle with respect to each other and the coupling member (6) is equipped with a recess (12) associated with these prints (l1), always fitting one of the prints (11) in the recess (12) of the coupling member (6) when the coupling member (6) 10 has been swung to one of its possible switching positions. 10. Telescopic gma rail according to one of the preceding claims, characterized in that the coupling member (6), in the area around its support hole (6d), is provided with a hole (13), within which spring-like souls (14) elastically support a central area (15) that has the drill of 15 support (6d).