WO2022114713A1

WO2022114713A1 - Sliding device

Info

Publication number: WO2022114713A1
Application number: PCT/KR2021/017222
Authority: WO
Inventors: 이두면; 이형진
Original assignee: (주)세고스
Priority date: 2020-11-24
Filing date: 2021-11-23
Publication date: 2022-06-02

Abstract

An embodiment of the present invention provides a sliding device which is provided at a drawer accommodating part for accommodating a drawer and allows the drawer to be withdrawn from or inserted into the drawer accommodating part, the device comprising: a first rail member fixed to the drawer accommodating part; a second rail member slidably coupled to the first rail member; a first retainer installed between the first rail member and the second rail member to guide movement of the second rail member; and a position adjustment part for adjusting a position of the first retainer when the second rail member is withdrawn from or inserted into the first rail member, wherein the position adjustment part comprises at least one first retainer stopper formed to protrude toward the inner side of the first rail member and limiting movement of the first retainer in an insertion direction.

Description

sliding device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding device, and more particularly, to a sliding device provided with a retainer that restricts movement and provides convenience to a user by enabling smooth movement of the sliding device.

FIG. 1 shows a conventional sliding device 8. In a general sliding device 8, a drawer C located in a drawer accommodating part B provided in a home appliance such as a refrigerator is drawn out from the drawer accommodating part B or It is a means for guiding the movement of the drawer (C) when drawn into the drawer receiving portion (B).

The sliding device 8 is provided by being inserted into the inner rail 81 fixed to the outer circumferential surface of the drawer C, the outer rail 83 fixed to the drawer receiving part B, and the outer rail 83, the inner rail ( 81) includes an intermediate rail 82 that is accommodated.

Also, between the inner rail 81 and the intermediate rail 82, when the inner rail 81 is drawn out or drawn in from the intermediate rail 82, the first inner retainer 84 for supporting the inner rail 81, the intermediate rail ( A second inner retainer 85 provided between the 82 and the outer rail 83 to support the intermediate rail 82 when the intermediate rail 82 is drawn out or drawn in from the outer rail 83 is included.

Therefore, when the user withdraws the drawer C drawn into the drawer accommodating part B, the intermediate rail 82 is withdrawn from the outer rail 83 while being supported by the second inner retainer 85, and the inner rail 81 is a structure that is drawn out from the intermediate rail 82 while being supported by the first inner retainer 84 .

However, the second inner retainer 85 has a problem in that it is not possible to expect a smooth movement of the sliding device 8 because of the surrounding impact or the inertia when the user suddenly pulls or closes the second inner retainer 85 .

선행기술문헌Prior art literature

(Patent Document 1) Korean Patent Publication No. 10-2013-0117369　 (2013.10.28)

SUMMARY OF THE INVENTION The present invention is to solve the above problems of the prior art, and an object of the present invention is to provide a sliding device provided with a retainer whose movement is restricted to provide convenience to a user by enabling smooth movement of the sliding device.

In order to achieve the above object, one aspect of the present invention is a sliding device that is provided in a drawer receiving portion in which a drawer is accommodated to withdraw or retract the drawer from the drawer receiving portion, wherein the sliding device is fixed to the drawer receiving portion. A first rail member, a second rail member slidably coupled to the first rail member, and a first retainer installed between the first rail member and the second rail member to guide the movement of the second rail member and a position adjusting unit for adjusting a position of the first retainer when the second rail member is drawn out or retracted to the first rail member, wherein the position adjusting unit is formed to protrude inwardly from the first rail member, , and at least one first retainer stopper for limiting movement in the retracting direction of the first retainer.

In an embodiment of the present invention, the position adjusting unit includes a guide groove formed in the second rail member and an elastic protrusion formed in the first retainer and guided by the guide groove, wherein the first retainer includes: When is in an abnormal position, one end of the guide groove may be in contact with the elastic protrusion upon retraction, and may be a sliding device, characterized in that the first retainer is pushed in the retracting direction.

In one embodiment of the present invention, the position adjusting unit is formed to protrude toward the first retainer at the rear end of the second rail member, and pushes the first retainer to the withdrawal position when the second rail member is drawn out. 1 It may be a sliding device, characterized in that it includes a retainer engaging portion.

In an embodiment of the present invention, the position adjusting part is formed to protrude toward the first retainer at the front end of the first rail member, and a first retainer to prevent separation of the first retainer when the second rail member is drawn out. It may be a sliding device, characterized in that it includes a retainer separation prevention part.

In an embodiment of the present invention, the position adjusting unit includes a protrusion formed to protrude toward the first retainer at the middle of the second rail member, and an elastic protrusion formed to protrude toward the second rail member from the first retainer. and, when the first retainer is in an abnormal position, the protrusion may be in contact with the elastic protrusion upon retracting to push the first retainer in the retracting direction.

According to one aspect of the present invention, if the user completely closes the drawer even when the retainer is located in the middle between the withdrawing position and the retracting position when the drawer is fully opened, the retainer is placed in contact with the retainer stopper, that is, the retracted position. It has the effect of returning to

In addition, the present invention is a sliding device in which the retainer is restored to the retracted position while the drawer is moved from the drawn-out state to the retracted state. When the drawer is pulled out, an error occurs in the retainer position due to slip occurring between the rail member and the retainer. Even so, since the retainer is returned to the retracted position during the retracting operation of the drawer, an accurate opening/closing operation of the drawer can be expected at all times, thereby improving the usability and reliability of the product.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 shows a sliding device according to the prior art.

2 is a perspective view of a sliding device according to an embodiment of the present invention.

3 is an exploded view of the sliding device according to an embodiment of the present invention as viewed from above.

4 is an exploded view of the sliding device according to an embodiment of the present invention as viewed from below.

5 shows a first rail member and a second rail member in a state in which the drawer is completely closed in the sliding device according to an embodiment of the present invention.

6 illustrates a first rail member and a second rail member in a state in which the drawer is fully opened in the sliding device according to an embodiment of the present invention.

7 is a cross-sectional view of a sliding device according to an embodiment of the present invention.

8 is an exploded view of a sliding device according to another embodiment of the present invention as viewed from above.

9 is an exploded view of a sliding device according to another embodiment of the present invention as viewed from below.

10 shows a first rail member and a second rail member in a state in which the drawer is completely closed in the sliding device according to another embodiment of the present invention.

11 illustrates a first rail member and a second rail member in a state in which the drawer is fully opened in the sliding device according to another embodiment of the present invention.

12 is a cross-sectional view of a sliding device according to another embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in several different forms, and thus is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is "connected" with another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. . In addition, when a part "includes" a certain component, this means that other components may be further provided without excluding other components unless otherwise stated.

Each of the rails is unfolded to move the drawer to the withdrawing position, and each of the unfolded rails are overlapped to move the drawer to the retracted position. In the sliding device of the present invention, the direction in which the drawer is drawn out (W), that is, the end of the rail located outside the drawer accommodating part is called the tip part, and the direction in which the drawer is drawn (I), that is, inside the drawer accommodating part. The end of the positioned rail is called the rear end.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a sliding device according to an embodiment of the present invention, FIG. 3 is an exploded view of the sliding device according to an embodiment of the present invention as viewed from above, and FIG. 4 is a sliding device according to an embodiment of the present invention. is an exploded view viewed from below.

As shown in FIG. 2 , the sliding device 1000 according to an embodiment of the present invention includes a first rail member 100 fixed to a drawer receiving unit in which a drawer is accommodated, and a third rail member 300 fixed to the drawer. ), and a second rail member 200 that is provided to be withdrawable from the first rail member 100 and accommodated so that the third rail member 300 can be drawn out.

In addition, as shown in FIGS. 3 and 4, a first retainer 400 for supporting the movement of the second rail member 200 is provided between the first rail member 100 and the second rail member 200, A second retainer 500 for supporting the movement of the third rail member 300 is provided between the second rail member 200 and the third rail member 300 .

The first rail member 100 includes a first rail body 110 fixed to the drawer receiving unit and a first rail provided with opposite ends of the first rail body 110 bent toward the second rail member 200 . and a flange 120 .

The first rail flange 120 is provided with a first rail raceway 121 in which the ball 410 of the first retainer 400 is accommodated, and the first rail raceway 121 is the first rail flange 120 . It may be provided in a concavely bent form along the longitudinal direction of the first rail member 100 on the inner circumferential surface of the .

On one side of the first rail body 110 in the withdrawal direction W, the first retainer 400 supports the first retainer 400 so that the first retainer 400 does not separate from the first rail member 100 when the drawer is opened. A separation prevention unit 140 may be provided. The first retainer separation preventing unit 140 is formed by bending a portion of the first rail body 110 in a direction in which the second rail member 200 is coupled, or to be mounted on the first rail body 100 as a separate member. can Accordingly, it is possible to prevent the first retainer 400 from being separated from the first rail member 100 in the drawing-out direction (W).

On one side of the first rail body 110 in the inlet direction (I), a first support protrusion ( 150) may be provided. The first support protrusion 150 may be formed by bending a portion of the first rail body 110 in a direction in which the second rail member 200 is coupled. Accordingly, the second rail member 200 can be prevented from being separated from the first rail member 100 in the inlet direction (I).

The second rail member 200 includes a second rail body 210 inserted into a space formed by a pair of first rail flanges 120 , and opposite ends of the second rail body 210 are opposite ends of the third rail member ( It includes a second rail flange 220 that is bent toward the 300).

The second rail body 210 may be provided along the longitudinal direction of the second rail member 200 and may include a bending groove 211 provided by concavely bending the center of the second rail body 210 . This is to prevent the configuration provided in the first rail member 100 and the second rail member 200 from interfering when the second rail member 200 is drawn out or drawn in from the first rail member 100 .

Meanwhile, on the second rail flange 220 , the ball 510 of the second retainer 500 is supported from the outside and the second rail raceway 221 on the outside in which the ball 410 of the first retainer 400 is supported from the outside. An inner second rail raceway 222 is provided.

The outer second rail raceway 221 may be provided along the longitudinal direction of the second rail member 200 on the outer circumferential surface of the second rail flange 220 , and the inner second rail raceway 222 is the second rail It may be provided along the longitudinal direction of the second rail member 200 on the outer peripheral surface of the flange 220 .

On one side of the second rail body 210 in the withdrawal direction W, a second retainer for supporting the second retainer 500 so that the second retainer 500 does not separate from the second rail member 200 when the drawer is opened. A departure prevention unit 240 may be provided.

The third rail member 300 is provided along the longitudinal direction of the drawer and is fixed to the outer circumferential surface of the third rail body 310 and the third rail flange provided at opposite ends of the third rail body 310, respectively. 320).

The third rail flange 320 is provided with opposite ends of the third rail body 310 bent toward the second rail member 200 . On the outer peripheral surface of the third rail flange 320 , the second retainer 500 . A third rail raceway 321 on which the ball 510 is supported is provided.

The third rail raceway 321 may be provided in various shapes as long as the ball 510 of the second retainer 500 can be accommodated, and FIGS. 3 and 4 show that the third rail flange 520 is concave. A case in which it is bent and provided is shown as an example.

On the other hand, the third rail body 310 may further include a second retainer engaging portion 340 . The second retainer engaging portion 340 is inserted into the receiving groove 530 of the second retainer 500 to provide a third It is configured such that the second retainer 500 can be moved together with the third rail member 300 when the rail member 300 is withdrawn from the second rail member 200 .

Furthermore, the end of the third rail body 310 positioned in the direction in which the third rail member 300 is drawn out from the second rail member 200 (the end of the third rail body positioned in the direction in which the drawer is drawn out from the drawer receiving part) A stopper 330 may be further provided, and the stopper 330 may be provided by bending an end of the third rail body 310 toward the second rail member 200 .

A first retainer 400 is provided between the first rail member 100 and the second rail member 200 , and a plurality of balls 410 are partially inserted into the first retainer 400 , A plurality of rotation grooves 420 are provided to prevent separation and to rotatably support the rotation.

In this case, the first retainer 400 may have various shapes as long as it can position the ball 410 between the outer second rail raceway 221 and the first rail raceway 121 of the second rail flange 220 . 3 and 4 show, for example, the first retainer 400 in a shape in which opposite ends are bent and the rotation groove 420 is provided.

In addition, the first retainer 400 is further provided with a receiving groove 430 in which the first retainer engaging portion 250 provided in the second rail member 200 is accommodated. Therefore, when the second rail member 200 is withdrawn from the first rail member 100 , the first retainer engaging portion 250 is inserted into the receiving groove 430 of the first retainer 400 to insert the first retainer 400 . to be moved together with the second rail member 200 .

That is, as the first retainer engaging portion 250 of the second rail body 210 comes into contact with the first retainer 400 and pushes it out, the first retainer 400 moves to the withdrawal position.

A second retainer 500 is provided between the second rail member 200 and the third rail member 300 , and a plurality of balls 510 are partially inserted into the second retainer 500 . A plurality of rotation grooves 520 are provided to prevent separation and to support rotation at the same time.

The second retainer 500 may be provided in various shapes as long as it can position the ball 510 between the third rail raceway 321 and the inner second rail raceway 222 of the second rail flange 220 . 3 and 4 show, for example, the second retainer 500 in a shape in which both ends facing each other are bent and the rotation groove 520 is provided.

A receiving groove 530 in which the second retainer engaging portion 340 provided in the third rail member 300 is accommodated is further provided at one side of the second retainer 500 . Accordingly, when the third rail member 300 is withdrawn from the second rail member 200 , the second retainer engaging portion 340 is inserted into the receiving groove 530 of the second retainer 500 to insert the second retainer 500 . ) to be moved together with the third rail member 300 .

Figure 5 shows the first rail member and the second rail member in a state in which the drawer is completely closed in the sliding device according to an embodiment of the present invention, and Figure 6 is a sliding device according to an embodiment of the present invention. In this case, the first rail member and the second rail member are shown in a state in which the drawer is fully opened, and FIG. 7 is a cross-sectional view of the sliding device according to an embodiment of the present invention.

Referring to FIG. 5 , when the housing is retracted, the first retainer engaging portion 250 of the second rail member 200 is supported by the first support protrusion 150 of the first rail member 110 . At this time, the end 450 of the first retainer 400 comes into contact with the first retainer stopper 130 of the first rail member 100 , and the elastic protrusion 440 of the first retainer 400 is formed by the second rail member. (200) comes into contact with one side of the guide groove 230 in the extraction direction (W). Here, the position of the first retainer 400 is referred to as an inlet position.

Referring to FIG. 6 , when the housing is withdrawn, one end of the first retainer 400 in the withdrawal direction W is supported by the first retainer separation preventing portion 140 of the first rail member 100, and the second rail The first retainer engaging portion 250 of the member 200 is supported in the receiving groove 430 in the retracting direction (I) of the first retainer 400 . Here, the position of the first retainer 400 is referred to as a withdrawal position.

5 to 7 , the first rail body 110 may include at least one first retainer stopper 130 protruding toward the first retainer 400 . The first retainer stopper 130 is in contact with the end 450 of the first retainer 400 that leaves the retracted position and passes the retracted position while the second rail member 200 is drawn into the first rail member 100 . while stopping the movement of the first retainer 400 .

That is, in a state in which each rail is fully retracted, the first retainer stopper 130 is on the rear side of the first rail body 110 to act as a stopping means for preventing the first retainer 400 from being excessively moved out of the retracted position. formed so as to be in contact with the rear end of the first retainer.

The first retainer 400 may include an elastic protrusion 440 inserted into the guide groove 230 of the second rail member 200 and guided by the guide groove 230 . Also, the second rail body 210 may include a guide groove 230 into which the elastic protrusion 440 of the first retainer 400 is inserted, and guide the elastic protrusion 440 .

The guide groove 230 may be formed along a movement path of the elastic protrusion 440 . One side of the guide groove 230 in the drawing-out direction W may contact the elastic protrusion 440 and press the elastic protrusion 440 to move the first retainer 400 in the retracting direction I.

During normal retraction, one side of the elastic protrusion 440 and the guide groove 230 in the withdrawal direction (W) does not come into contact, and in a slip situation, that is, during abnormal retraction, one side of the guide groove 230 in the withdrawal direction (W) is elastic. By pressing the protrusion 440 is pushed in the inlet direction (I).

That is, the sliding device 1000 of the present invention is provided with a moving means and a stopping means for moving the first retainer 400 deviated from the retracted position to the retracted position in the process of operating the drawer in the retracting direction (I), the guide One side of the groove 230 in the withdrawal direction W is a means for pushing the first retainer 400 to the retracted position when the first retainer 400 is in a slip condition, that is, in an abnormal position, and the first retainer stopper 130 is connected to the first retainer ( 400) is a means of blocking to stop at the retracted position when the retracted position is exceeded.

As such, the first retainer 400 is accommodated by the elastic protrusion 440 , the guide groove 230 , the first retainer stopper 130 , the first retainer engaging part 250 , and the first retainer separation preventing part 140 . Whenever the sieve is drawn in or out, it can be returned to its original position. The position of the first retainer 400 including the elastic protrusion 440 , the guide groove 230 , the first retainer stopper 130 , the first retainer engaging portion 250 , and the first retainer separation preventing portion 140 . A member for adjusting the , is called a position adjusting unit 800 .

8 is an exploded view of a sliding device according to another embodiment of the present invention as viewed from above, FIG. 9 is an exploded view of a sliding device according to another embodiment of the present invention from below, and FIG. 10 is another embodiment of the present invention In the sliding device according to another embodiment of the present invention, the first rail member and the second rail member are shown in a state in which the drawer is completely closed. A first rail member and a second rail member are shown, and FIG. 12 is a cross-sectional view of a sliding device according to another embodiment of the present invention.

Hereinafter, another embodiment of the present invention will be mainly described with reference to FIGS. 8 to 12 with differences from one embodiment.

The first retainer 700 may include an elastic protrusion 740 protruding toward the second rail member 600 . In addition, the second rail body 610 is formed to protrude in the direction of the first retainer 700, and may include a protrusion 630 configured to contact the elastic protrusion 740 of the first retainer 700 during the retracting process. have.

The protrusion 630 of the second rail member 600 comes into contact with the elastic protrusion 740 of the first retainer 700 during the retracting process, and presses the resilient protrusion 740 to move the first retainer 700 in the retracting direction. It can be moved to (I).

During normal retraction, the elastic protrusion 740 and the protrusion 630 do not contact, and in a slip situation, that is, during abnormal retraction, the protrusion 630 presses the elastic protrusion 740 to push it in the retracting direction (I).

That is, the sliding device 1000 of the present invention is provided with a moving means and a stopping means for moving the first retainer 700 out of the retracted position to the retracted position in the process of operating the drawer in the retracting direction (I). 2 The protrusion 630 of the rail member 600 is a means for pushing the first retainer 700 to the retracted position when the first retainer 700 is in a slip condition, that is, in an abnormal position, and the first retainer stopper 130 is the first retainer 700 ) is a means of blocking so that it stops at the retracted position when it exceeds the retracted position.

As such, by the elastic protrusion 740 , the protrusion 630 , the first retainer stopper 130 , the first retainer locking part 650 , and the first retainer separation preventing part 140 , the first retainer 700 is a housing body. It can be located in its original position whenever it is drawn in or withdrawn. The position of the first retainer 700 including the elastic protrusion 740 , the protrusion 630 , the first retainer stopper 130 , the first retainer engaging portion 650 and the first retainer separation preventing portion 140 . A member to be adjusted is called a position adjusting unit 800 .

As described above, in the present invention, even when the

first retainers

400 and 700 are positioned between the pull-out position and the retract position when the drawer is fully opened, if the user completely closes the drawer, the

first retainers

400 and 700 has the effect of returning to the position in contact with the first retainer stopper 130 , that is, the retracted position.

That is, the present invention is a sliding device 1000 in which the retainer is restored to the retracted position in the process of moving the drawer from the drawn-out state to the retracted state. Even if an error occurs, since the retainer returns to the retracted position during the drawer retraction operation, accurate opening/closing operation of the drawer can be expected at all times, improving usability and reliability of the product.

The description of the present invention described above is for illustration, and those of ordinary skill in the art to which the present invention pertains can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a dispersed form, and likewise components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

부호의 설명Explanation of symbols

1000 sliding device

100 first rail member

110 first rail body

120 first rail flange

130 first retainer stopper

140 First retainer separation preventing unit

150 first support protrusion

200, 600 second rail member

210, 610 2nd rail body

220, 620 2nd rail flange

230 guide groove

630 overhang

240, 640 Second retainer separation prevention part

250, 650 First retainer locking part

300 third rail member

310 3rd rail body

320 3rd rail flange

330 stopper

340 second retainer catch

400, 700 first retainer

410 and 710 balls

420, 720 revolving groove

430, 730 accommodation home

440, 740 elastic projections

800 positioning unit

Claims

In the sliding device provided in the drawer receiving portion in which a drawer is accommodated to withdraw or retract the drawer from the drawer receiving portion,

a first rail member fixed to the drawer receiving part;

a second rail member slidably coupled to the first rail member;

a first retainer installed between the first rail member and the second rail member to guide movement of the second rail member; and

and a position adjusting unit for adjusting a position of the first retainer when the second rail member is drawn out or drawn into the first rail member;

and the position adjusting unit includes at least one first retainer stopper protruding inwardly from the first rail member and limiting movement of the first retainer in the retracting direction.
According to claim 1,

The position adjustment unit,

a guide groove formed in the second rail member; and

It is formed on the first retainer and includes an elastic protrusion guided by the guide groove;

When the first retainer is in an abnormal position, one end of the guide groove comes into contact with the elastic protrusion upon retraction, and pushes the first retainer in the retracting direction.
According to claim 1,

The position adjustment unit,

and a first retainer engaging portion protruding toward the first retainer at the rear end of the second rail member and pushing the first retainer to a withdrawal position when the second rail member is pulled out.
According to claim 1,

The position adjustment unit,

and a first retainer separation preventing portion formed at the front end of the first rail member to protrude toward the first retainer and preventing separation of the first retainer when the second rail member is drawn out.
According to claim 1,

The position adjustment unit,

a protrusion formed at an intermediate portion of the second rail member to protrude toward the first retainer; and

and an elastic protrusion formed on the first retainer to protrude toward the second rail member;

The sliding device, characterized in that when the first retainer is in an abnormal position, the protrusion comes into contact with the elastic protrusion upon retraction and pushes the first retainer in the retracting direction.