CN105725546B - Linear guides for movable parts of furniture, household appliances or the like - Google Patents

Abstract

The present invention relates to be used for furniture, the linear guide (1) of the movable part of household appliance or the like, including the first director element (2) that can be installed in a position-stable manner, it can be connected to the second director element (3) and third director element (4) between two parties of movable part, it is directed to by the rolling element (13) that is maintained in roller holder (12) or by sliding shoe (15) about the first director element (2) and the second director element (3), and the roller holder (12) or sliding shoe (15) are by having the flexible controller (5) for pulling device (6) to synchronize, it is also formed with the flexible another controller (7) for pulling device (6) and the second director element (3) being connected to the first director element (2), when two controllers (5, 7) between In the case where being misaligned, second controller (7) can also be moved to its end position independently of the first controller (5).

Description

Linear guides for movable parts of furniture, household appliances or the like

technical field

The invention relates to a linear guide for movable parts of furniture, household appliances or the like, such as drawers, shopping baskets, centering bottoms, lifting columns, displaceable door leaves, etc., comprising a first guide element which can be mounted in a fixed manner , a second guide element connectable to the movable part, and an intervening third guide element extending the linear guide and passing the rolling elements held in the rolling element cage or sliding blocks relative to the first guiding element and the second guiding element. Two guide elements are guided and the rolling element cage or slide is synchronized by a controller with flexible pulling means.

Background technique

A linear guide of a general type is generally known, for example, from DE 10 2010 060 583 A1. Linear guides of this type can be used not only in the field of domestic furniture and household appliances, such as refrigerators, dishwashers or ovens, but also in office furniture and other commercial applications.

In linear guides of the general type, it is desirable to achieve substantial positive control and freedom of sliding during extension and retraction of the linear guide.

In this regard, the linear guide according to the general term of the invention has definitely proven its worth in practice.

Contents of the invention

It is an object of the present invention to further improve linear guides of the generic type and to further improve the freedom of sliding and handling during extension and retraction of the linear guide.

According to the invention, this object is achieved by a further controller which has flexible pulling means and which connects the second guide element to the first guide element, wherein when the first controller has traveled to the end position the two In the event of misalignment between the two controls, the second control is also able to move to its end position independently of the first control.

Thanks to such a configuration, with measures carried out in a relatively simple manner and a structure that can be easily implemented, all the movable parts are connected to each other, resulting in a further considerable slowing down of the sliding and the convenience of the linear guide up to the end position Significant improvement in operation. It also ensures that potentially occurring misalignments between the two controllers can be corrected by simply displacing the linear guide to one of two possible end positions.

The invention also includes other features which are preferred embodiments.

Description of drawings

Embodiments of the invention are illustrated in the drawings and explained in more detail hereinafter, in which:

Figure 1 shows a front view of a linear guide according to the invention;

Figure 2 shows a perspective view of the linear guide according to Figure 1 in an extended state;

Figure 3 shows a side view of the linear guide in a retracted state;

Figure 4 shows a side view of the linear guide in an extended state;

Fig. 5 shows a perspective view corresponding to the linear guide of Fig. 2 according to another embodiment of the present invention;

Figure 6 shows a side view of the linear guide according to Figure 5 in the retracted state;

Figure 7 shows a side view of the linear guide according to Figure 5 in an extended state;

Figure 8 shows a front view of a linear guide according to another embodiment of the present invention;

Figure 9 shows a perspective view of the linear guide according to Figure 8 in the retracted state;

Figure 10 shows a perspective view of the linear guide according to Figures 8 and 9 in an extended state;

Figure 11 shows a side view of the linear guide in a retracted state;

Figure 12 shows a side view of the linear guide in an extended state;

Figure 13 shows a partial perspective view of a linear guide according to another embodiment of the present invention;

Figure 14 shows a partial sectional view along line XIV-XIV in Figure 13;

FIG. 15 shows a view of the area of the linear guide according to FIG. 13 shown in sectional view in FIG. 14;

Figure 16 shows a perspective view of a linear guide (with the second guide element omitted) according to another embodiment of the present invention;

Figure 17 shows a perspective view corresponding to Figure 16 according to another embodiment of the invention, also shown with the second guide element omitted;

Figure 18 shows a complete perspective view of a linear guide according to another embodiment of the present invention;

FIG. 19 shows a view of the linear guide along the direction of arrow XIX in FIG. 18 .

Detailed ways

Apart from the differences explained in more detail below, the linear guides shown in the figures and generally designated with the reference number 1 provide in principle a similar configuration.

In the first case, therefore, each linear guide consists of a first guide element 2 which can be mounted in a fixed manner, a second guide element 3 which can be connected to the movable part, and an intervening third guide element 4 which Three guide elements 4 extend this linear guide and are guided with respect to the first guide element 2 and the second guide element 3 by means of rolling bodies 13 held in a rolling body cage 12 or by sliding blocks 15, which will be described in more detail below. to discuss.

In the case of a linear guide 1 for example for a drawer, a shopping basket or a centered bottom of a piece of furniture, a household appliance or the like, the first guide element 2 relates to a guide rail which can be fixed to the furniture body, the second guide element 3 relates to a running track, By means of this running track, a drawer or the like is movable, and the third guide element 4 is an intermediate rail, as it is usually called in the furniture industry.

As already mentioned above, the third guide element 4 is arranged between the first guide element 2 and the second guide element 3 and is arranged in a known manner by rolling bodies 13 held in the rolling body cage 12 or by sliding The blocks are guided with respect to the above-mentioned guide element 2 and guide element 3, so this will not be explained in more detail.

Furthermore, in all embodiments a first controller 5 is provided which comprises flexible pulling means 6 and which synchronizes the third guide element 4 with respect to the first guide element 2 and the second guide element 3 . In this regard, the flexible pulling means 6 are fixed to the rolling body cage 12 or the sliding block 15, on the one hand the flexible pulling means 6 are arranged directly or indirectly between the second guide element 3 and the first guide element 2, and On the other hand, the flexible pulling means 6 are fixed to the third guide element 4 by means of two rollers 8 mounted on shafts 9 in line with this pulling means 6 for the purpose of reversing.

In the embodiment according to FIGS. 1 to 12 , the first controller 5 is formed by a flexible pulling means 6 in the form of a cable pull, respectively.

Another constructional feature common to all embodiments is the provision of a further control 7 comprising flexible pulling means 6, wherein the pulling means 6 are fixed to the second guiding element 3 and the first guiding element 2 respectively . Common in all embodiments is that the pulling means 6 of the controller 7 is again guided by means of a roller 8 which coincides with the pulling means 6 and is mounted on the third guiding element 4 for the purpose of reversing. The two pulling means 6 of the control 5 and the control 7 are wound around the rollers 8, the two pulling means 6 are respectively located in one plane and parallel to the second guide between the rollers 8 in their pull-out direction. The element 3 and the third guide element 4 extend.

These common components and construction features ensure in all embodiments a substantially rattle-free, smooth operation during extension and retraction of the second guide element 3 and the third guide element 4 without any noticeable slide.

In all the embodiments according to the invention of FIGS. 1 to 12 , the flexible pulling means 6 of both the controller 5 and the controller 7 consist of cables which are respectively deflected by means of cable pulleys 8 . In the region of the third guide element 4 the control 5 and the control 7 each extend adjacent to one another.

In this regard, as shown in the embodiment according to FIGS. 1 to 7 , the cable pulleys 8 of the controller 5 and the controller 7 may have the same diameter as one another.

It is also possible, as shown by way of example in the embodiment according to FIGS. 8 can also be arranged so as to be non-twistable relative to each other, which allows them to be manufactured in one piece. With respect to the larger cable pulley 8, the diameter of the smaller cable pulley 8 is half the diameter of the larger cable pulley 8, because the controller 5 Both, the controller 7, require only two shafts 9 in total, wherein the cable pulleys 8 respectively mounted on the shafts 9 are arranged in a non-rotatable manner relative to each other. In this example, the first controller 5 connected to the rolling element cage 12 is guided on the smaller cable pulley 8 . Also in this example, the pulling means 6 extend parallel to the second guide element 3 and the third guide element 4 and in the aforementioned pulling-out direction of the guide element 3 and the guide element 4 .

In the embodiment according to the invention of FIGS. 13 to 15 , the controller 5 and the flexible pulling means 6 of the controller 7 consist of a toothed belt, which is turned and guided by a gear 8a which is connected to the toothed Shaped with 6 consistent. Gears 8a for the controller 5 and the controller 7 are mounted independently rotatable relative to and adjacent to each other on a sleeve 9a on a common shaft 9 . A slip clutch 10 in the form of an elastic washer or cup spring is arranged between the gears 8a, the pretension of which can be varied by means of a clamping nut 11 on the sleeve 9a.

The connection surface between the gear 8a and the slip clutch 10 may be formed with a smooth surface, thereby enabling continuous rotation of the two gears 8a, which are frictionally coupled by elastic washers or cup-shaped elastic members, after exceeding the connection force connected to each other.

It is also conceivable to form the connecting surface between the gear wheel 8a and the slipping clutch in a structured manner, for example in a wave-like manner or as a triangular depression, in order to use a lower pretension to exceed the connecting force and Torque is developed in a more precise manner, allowing trigger disengagement.

In the embodiment according to the invention of FIG. 16 , the rolling bodies 13 held in the rolling body cage 12 are arranged between the guide element 2 , the guide element 3 and the guide element 4 , wherein two rolling body cages are arranged 12a, 12b, the two rolling-element cages 12a, 12b are arranged at a distance from each other and are connected to each other by a rod 14, and the rolling-element cage 12a located in the front in the pull-out direction of the linear guide 1 is smaller than the rolling-element cage 12a located in the rear area The rolling element cage 12b is equipped with a greater number of rolling elements 13 , in this example only four rolling elements 13 are equipped, as is clearly shown in FIG. 16 .

This configuration takes into account the fact that, during the extension of the linear guide 1 , higher loads occur in the area in front of the third guide element 4 than in the area behind it.

FIG. 17 shows an embodiment of the invention in which sliding blocks 15 are provided instead of the rolling element cage and rolling elements, which are also connected to each other by connecting rods 16 .

An embodiment of the present invention is shown in FIGS. 18 and 19 , wherein the controller 5 , 7 consists of a combination of a toothed belt 6 a and a cable 6 .

Provided is the use of a cable pulley 8 whose diameter is half the diameter of the gear 8a with respect to the gear 8a, which coincides with the toothed belt 6 in an interlocking manner, wherein the cables arranged adjacent to each other on the shaft 9 The wheel 8 can also be formed in a non-rotatable manner with respect to the gear 8a on the same shaft 9, which would for example allow a one-piece manufacturing, wherein in total only two shafts 9 are required for both the controller 5 and the controller 7, as for example combined The embodiment according to FIGS. 8 to 12 was described above as an example. During this process, the first controller 5 , which is connected to the rolling element cage 12 , is guided on the smaller cable pulley 8 . Also in this example, the flexible pulling means 6 of the controller 5 and the controller 7 are parallel to the second guide element 3 and the third guide element 4 and in the pull-out direction of the above-mentioned second guide element 3 and the third guide element 4 extend.

In this embodiment, the connection between the roller 8 and the gear 8a meshing with the toothed belt 6a is not necessary because, in the event of a misalignment, the misalignment can be detected by the cables 6, belts, or flat belts. Slippage on roller 8 is corrected. Potential misalignment between the two controls can be corrected by simple displacement of the linear guides to one of two possible end positions, as in the above-described embodiment according to FIGS. 8-12 It has been described where the cable 6 slides on the sheave 8 . It is irrelevant whether the first controller 5 or the second controller 7 comprises a toothed belt 6 a and gears 8 a or cables 6 , belts or flat belts and rollers 8 .

At this point it has been expressly stated that instead of the toothed belt 6 shown in the embodiment, other embodiments of flexible pulling means combined in an interlocking manner, possibly with beads, chains, etc. or the like can be used. form, and may be guided in an interlocking manner by separately formed rollers, such as toothed belts or sprockets for reversing purposes.

List of reference signs

1 linear guide

2 guide elements

3 guide elements

4 guide elements

5 first controller

6. 6a pull device

7 Secondary controller

8 rollers

8a Gears/Sprockets

9 axes

9a Sleeve

10 slipper clutch

11 clamping nut

12, 12a, 12b rolling element cage

13 Rolling elements

14 poles

15 sliders

16 Connecting rod.

Claims (18)

1. A linear guide (1) for movable parts of furniture or household appliances, said linear guide (1) comprising a first guide element (2) mountable in a fixed manner, connectable to said A second guide element (3) of the movable part, and an intervening third guide element (4), which extends the linear guide and is retained by the rolling element cage (12) The rolling elements (13) are guided with respect to the first guide element (2) and the second guide element (3) or by sliding blocks (15), and the rolling element cage (12) or sliding blocks ( 15) Synchronization by a first controller (5) with flexible pulling means (6), characterized by a second controller (7) that has a flexible pulling means (6) and will Said second guide element (3) is connected to said first guide element (2), wherein, when said first controller (5) has traveled to an end position while both said controllers (5, 7) in case of misalignment, the second control (7) can also be moved to its end position independently of the first control (5). 2. Linear guide according to claim 1, characterized in that the first guide element (2) can be connected to a furniture body or a household appliance body as a body rail and the second guide element (3) as a Connected to movable furniture parts or household appliance parts by running rails. 3. Linear guide according to claim 1, characterized in that the flexible pulling means (6) are formed in the form of cables, belts or flat belts and are guided in a frictional engagement by means of rollers (8) for use in for the reverse purpose. 4. Linear guide according to claim 1, characterized in that the flexible pulling means (6) are formed in the form of toothed belts, beads or chains and are guided by rollers for reversing purposes. 5. Linear guide according to claim 4, characterized in that said roller is a gear or sprocket (8a) which coincides with said pulling means in an interlocking manner. 6. Linear guide according to claim 3, characterized in that said rollers (8) are mounted in a non-rotatable manner relative to each other on a common axis (9) and said first controller (5) The frictionally coupled flexible pulling means (6) in the form of cables, belts or flat belts can be moved by sliding on the respective associated rollers (8) in the blocking end position. 7. Linear guide according to claim 3, characterized in that the rollers (8) are mounted rotatably independently of each other on a common shaft (9). 8. The linear guide according to claim 4, characterized in that the gears (8a) of the first controller (5) and the second controller (7) are rotatably mounted independently of each other on a common shaft (9) and are connected to each other by a slip clutch. 9. The linear guide according to claim 8, wherein the slip clutch is formed in the form of an elastic washer or a cup-shaped elastic member. 10. Linear guide according to claim 9, characterized in that the connection surface between the gear (8a) and the slip clutch is formed with a smooth surface and thus allows continuous setting. 11. Linear guide according to claim 9, characterized in that the connection surface between the gear (8a) and the slip clutch is formed in a structured manner. 12. A linear guide according to claim 11, characterized in that the structured manner is in a corrugated manner or has triangular indentations. 13. The linear guide according to claim 2, characterized in that, the first controller (5) and the second controller (7) are located between the running track and the third track as an intermediate track. The pull-out direction of the guide element extends parallel to the running rail (3) and the intermediate rail (4). 14. The linear guide according to claim 13, characterized in that the rollers (8) or gears (8a) of the first controller and the second controller are installed on the middle rail (4) on at least one common shaft (9). 15. The linear guide according to any one of claims 1 to 4, characterized in that one of the first controller (5) and the second controller (7) comprises a toothed flexible pulling means (6) in the form of a belt or beads, said flexible pulling means (6) of said one controller being guided by rollers for reverse purposes, and said first controller (5) and The other of said second controls (7) comprises flexible pulling means (6) in the form of cables, straps or flat belts, said flexible pulling means (6) of said other controlling being able to block in the end positions of the rollers by sliding on the respective associated rollers (8). 16. Linear guide according to claim 15, characterized in that said rollers are gears or sprockets (8a) which coincide with said pulling means. 17. A piece of furniture or household appliance having at least one movable part, characterized in that the movable part is guided by a linear guide (1) according to claim 1. 18. A first guide element (2), a second guide element (2), a second The guide element (3) and the third guide element (4) are displaced to one of their end positions to correct the gap between the first guide element (2), the second guide element (3) and the Method of misalignment of three guide elements (4) with respect to the intervening rolling body cage (12), rolling body (13) and sliding block (15), wherein the rolling body cage (12), the rolling body The body (13) and the slider (15) are connected with respect to the first controller (5) and the first guide element (2), the second guide element (3) and the third guide element ( 2, 3, 4) are connected with respect to the second controller (7) through a flexible pulling device (6), characterized in that, in reaching the first controller (5) and the second controller (7) After the end position of one controller, the still moving pulling device (6) of the other controller (5, 7) is additionally relative to the first controller (5) and the other controller (5) already arranged in the end position. The pulling means (6) of said one of said second controllers (7) is displaced, wherein both said controllers (5, 7) are again adjusted relative to each other in their end positions Make corrections from time to time.