WO2013157784A1

WO2013157784A1 - Drawer sliding device

Info

Publication number: WO2013157784A1
Application number: PCT/KR2013/003098
Authority: WO
Inventors: 박윤식; 차현호
Original assignee: (주)세고스
Priority date: 2012-04-18
Filing date: 2013-04-12
Publication date: 2013-10-24
Also published as: EP2839760A1; EP2839760A4; CN104271000A; KR20130117619A; US20150131929A1; KR101398126B1

Abstract

Disclosed is a drawer sliding device. According to an embodiment of the present invention, a middle rail and an inner side rail are moved with each other when a drawer is withdrawn so that the load supporting force of a slide can be improved, the drawer can be easily withdrawn, and sagging or noise can be prevented while the drawer is withdrawn. Also, the height of an operating rail of automatic closing means is lowered so that the length of the middle rail extends to reach an upper side of the operating rail and the structural strength of the middle rail is not reduced while the range of operation of the automatic closing means is extended or shortened. Since the automatic closing means is added to the slide, the drawer that is opened is automatically retracted to a position at which the drawer is closed when the drawer is retracted a certain range, and thus it is possible to prevent the drawer in the closed state from being opened by a cause other than the intention of a user.

Description

Slide device for drawers

The present invention relates to a slide device for a drawer, and more particularly, to a drawer slide device for guiding the withdrawal and withdrawal of the drawer and automatically draws the drawer within a predetermined range.

Drawers are applied to a variety of storage means formed in the interior, such as furniture, hot and cold storage, cooking utensils, electronics.

In this way, various items may be stored in the drawer, such as a case in which sensitive items such as chemicals or foods that need to be stored at a constant temperature are stored, or when heat exchange between the storage space and the outside, such as cooking utensils, should be blocked. have.

Therefore, after the user has finished putting or removing the above items into the drawer, and the drawer is pulled in and closed, the drawer may not be opened due to unintended reasons such as a small inclination angle, shaking, or a small impact from the outside. Needs to be. Applicant has proposed an automatic closing device of the slide through the Republic of Korea Patent Publication No. 1150479 to meet this need.

On the other hand, the slide is usually provided with two to three rails, in recent years there is an increasing number of slides provided with three rails in order to increase the extent that the drawer is drawn out from the accommodating body.

Here, the three rails provided in the slide are generally coupled to the outer rail, the intermediate rail and the inner rail which are sequentially arranged side by side so as to be slidably movable, and the width and cross-sectional area of the three rails decrease from the outer rail to the inner rail. It may have a shape. That is, the structural strength may be weaker toward the inner rail.

When a heavy object is accommodated in the drawer guided to and pulled out by the slide, or the weight of the drawer itself is heavy, a large force may be applied to the slide. That is, when the inner rail is first slide-moved to the intermediate rail in the process of drawing out the drawer, the load may be concentrated on the inner rail. In this case, as mentioned above, since the structural strength of the inner rail may be weaker than that of the intermediate rail and the outer rail, when the load is concentrated on the inner rail, a phenomenon such as twisting or excessive sagging of the drawer may occur. It may be caused or inconvenience such as drawer and drawer of the drawer is not made smoothly.

Embodiment of the present invention to improve the load bearing capacity of the slide in the drawer is drawn out, to draw the drawer smoothly and to prevent the noise is generated.

In addition, embodiments of the present invention seek to increase the automatic closing range of the drawer without degrading the strength.

In addition, an embodiment of the present invention is to automatically draw the drawer is closed when the drawer was opened to a predetermined range, the drawer in the closed state is opened by a cause other than the user's intention, such as small shaking or impact To prevent this from happening.

According to an aspect of the present invention, a drawer slide device for guiding a drawer into or out of a storage space formed in the accommodating body, an outer rail fixed to one of the accommodating body and the drawer, and the outer rail An intermediate rail slidably coupled to the outer rail in a direction parallel to a longitudinal direction of the other rail, the other one of the storage body and the drawer coupled to the intermediate rail slidably movable in a direction parallel to the longitudinal direction of the intermediate rail; An inner rail fixed to the outer rail and an automatic closing means coupled to the outer rail, wherein the automatic closing means includes a closing means body coupled to one end of the other side of the outer rail, and the closing rail of the outer rail from the closing means body. Protrudingly formed toward the other side and parallel to the direction in which the drawer is drawn out and the straight portion A guide rail having a guide groove having a curved portion extending in a direction bent from the straight portion to a direction different from the straight portion, a slider coupled to the operating rail so as to be slidable along the longitudinal direction of the operating rail, and one end portion Inserted into the guide groove, the other end is protruding through the slider pin, one end is fixed to the closing means body and the other end is fixed to the slider to elastically support the slider in the direction of the closing means body Slider for drawer comprising an elastic body, the inner rail and the intermediate rail is moved in contact with the intermediate rail until one end of the actuating pin reaches the curved portion through the straight portion when the drawer is drawn out May be provided.

Here, the push rod may be formed in the slider protrudes in contact with the intermediate rail when the drawer is drawn out.

Alternatively, one end of the intermediate rail facing the closing means main body is formed with a cutout portion for receiving the operation rail when the drawer is retracted, so that the drawer is withdrawn from the one end of the intermediate rail except for the cutout portion. Can be pressed in contact with the slider.

Alternatively, the height protruding from the other surface of the outer rail of the operating rail is formed lower than the gap formed between the other surface of the outer rail and the intermediate rail, the other side of the outer rail of the operating rail when the drawer is retracted A part facing toward is located between the outer rail and the intermediate rail, one end of the intermediate rail toward the closing means body may be pressed against the slider when the drawer is pulled out.

In the slide device for a drawer as described above, an insertion hole having a shape corresponding to the operation rail is formed in a portion where the operation rail of the outer rail is disposed, and the operation rail may be inserted into the insertion hole.

A buffer unit may be formed at a portion where the slider and the intermediate rail contact each other. The buffer unit may include a buffer member made of an elastic material coupled to the slider or the intermediate rail, or may include a buffer protrusion protruding from the slider.

According to an embodiment of the present invention, the load bearing capacity of the slide can be improved by allowing the intermediate rail and the inner rail to move together when the drawer is pulled out, the drawer can be smoothly drawn out, and sag or noise during the drawer drawout process. This can be prevented from occurring.

In addition, according to an embodiment of the present invention, the height of the operating rail of the automatic closing means is lowered to extend the length of the intermediate rail to the upper side of the operating rail by operating the range of the automatic closing means without lowering the structural strength of the rail Can be extended or shortened.

According to an embodiment of the present invention, when the drawer which has been opened by adding the automatic closing means to the slide is drawn to a predetermined range, the drawer can be automatically drawn to a position where the drawer is closed, and the drawer in the closed state is not the intention of the user. Opening by cause can be prevented.

1 is a perspective view illustrating an installation state of a slide device for a drawer according to a first embodiment of the present invention

Figure 2 is an exploded perspective view of the slide shown in Figure 1

3 and 4 are perspective views of the automatic closing means of the slide shown in FIG.

5 to 7 are views for explaining the operation of the slide device for a drawer shown in FIG.

8 is a cross-sectional view of the portion E shown in FIG.

9 to 11 are views for explaining the operation of the slide device for a drawer according to the second embodiment of the present invention

12 is a perspective view showing an automatic closing means of a slide device for a drawer according to a third embodiment of the present invention

13 to 15 are views for explaining the operation of the slide device for a drawer according to the third embodiment of the present invention

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, when it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, the same or equivalent among the components included in the embodiment of the present invention is given the same reference numerals and are shown in the drawings, and overlapping description may be omitted.

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

1 is a perspective view illustrating an installation state of a slide device for a drawer according to a first embodiment of the present invention.

1, the drawer slide device 1 according to the first embodiment of the present invention is installed in the receiving means 10, the drawer slide device 1 in the slide 100 and the automatic closing means 200 ) Is included.

The storage means 10 refers to furniture, cold and hot dishes, cooking utensils, electronic appliances, and the like mentioned above, and the storage means 10 includes a storage body 11 having a storage space C therein and a storage space ( C) includes a drawer 12 installed to be withdrawn and withdrawn. Here, the direction A which is moved for opening of the drawer 12 so as to put or remove an object in the drawer 12 is called a drawing direction A, and the drawer 12 is moved into the storage space C. The direction B which is moved to be closed is referred to as the pulling direction B. FIG.

The slide 100 includes an outer rail 110, an intermediate rail 130 and an inner rail 150.

One surface of the outer rail 110 may be fixedly coupled to one inner surface of the accommodating body 11, that is, one wall surface in the accommodating space C. At this time, the outer rail 110 may be disposed such that its longitudinal direction is parallel to the extraction direction (A) and the pulling direction (B) of the drawer (12).

The intermediate rail 130 is slidably coupled to the other surface side of the outer rail 110, and the intermediate rail 130 may be disposed such that its longitudinal direction is parallel to the longitudinal direction of the outer rail 110.

Similarly, the inner rail 110 is slidably coupled to the intermediate rail 130, and the inner rail 150 may be disposed such that its longitudinal direction is parallel with the longitudinal direction of the intermediate rail 130. And the inner rail 150, as shown, can be fixedly coupled to one surface of the drawer 12 facing one inner surface of the receiving body (11).

The automatic closing means 200 may be coupled to the other end surface of the inlet direction (B) of the outer rail 110, the automatic closing means 200 will be described with reference to Figures 3 and 4 below.

The slide device 1 for the drawer guides the drawer 12 to be smoothly pulled in and out from the housing body 11, and automatically draws the drawer 12 when the drawer 12 that has been opened is drawn over a predetermined range. To be closed.

For reference, as shown in the slide device 1 for the drawer, the outer rail 110 may be fixed to the accommodating body 11 and the inner rail 150 may be fixed to the drawer 12, as shown in the drawing. The rail 110 may be fixed to the drawer 12 and the inner rail 150 may be fixed to the housing body 11.

When the outer rail 110 (not shown) is fixed to the drawer 12 and the inner rail 150 is fixed to the housing body 11, the drawer 12 opened by the automatic closing means 200 is in a predetermined range. In order to automatically close when the drawback, the automatic closing means 200 is coupled to the other end surface of the outgoing direction (A) end of the outer rail 110, as shown in FIG.

Therefore, the drawing direction (A) and the drawing direction (B) defined above are for clarifying the reference of the direction necessary for the description of the structure and operation of the embodiments exemplified herein, and only in the embodiments described herein. It is limited and not an absolute direction.

In addition, the slide device 1 for the drawer 1 may be combined with one or more sides on both sides of the drawer 12 or a plurality of combinations on one side of the drawer 12, the number may be added or subtracted as needed, and may be arranged in various ways. However, even when there are a plurality of drawer slide devices 1, the structure is the same, the description of the rest that is not shown to describe one slide device for drawers 1 will be replaced.

Meanwhile, a bearing for smooth sliding movement may be interposed between the outer rail 110 and the middle rail 130 and between the middle rail 130 and the inner rail 150. This will be described with reference to FIG. 2.

2 shows an exploded perspective view of the slide shown in FIG. 1.

Referring to FIG. 2, the slide 100 may further include a first bearing 120 and a second bearing 140.

The outer rail 110 includes an outer rail body 111.

On both sides of the outer leg body 111, a pair of flanges 112 bent in the same direction around the longitudinal direction of the outer leg body 111 are formed. The pair of flanges 112 are formed with a raceway 113 along the longitudinal direction. The raceway 113 may be formed in various shapes to accommodate a portion of the ball 129 to be described below. In the drawing, the raceway 113 having a shape of a groove formed along the longitudinal direction of the flange 112 is shown. ) Is shown.

A stopper 115 for limiting the moving range of the retainer 121 to be described below on the outer leg body 111 and a fastening hole for coupling the automatic closing means (200 in FIG. 1) to the outer leg body 111. A fastening hole 118 for fixing the 116 and the outer leg body 111 to the storage body 11 or the drawer 12 may be formed.

The first bearing 120 may include a retainer 121 and a ball 129.

At both edges of the retainer 121, as shown, a pair of flanges 122 are bent in the same direction about the longitudinal direction of the retainer 121, and the flange 122 is formed along the longitudinal direction. A plurality of ball insertion holes 123 are formed. The plurality of balls 129 may be inserted one by one into the plurality of ball insertion holes 123.

The first bearing 120 is seated on the outer leg body 111, wherein a portion of the ball 129 is accommodated in the raceway 113.

The intermediate rail 130 includes an intermediate rail body 131.

As shown in the drawing, a pair of flanges 132 that are bent in the same direction around the longitudinal direction of the intermediate receptacle 131 are formed on both sides of the intermediate receptacle 131. The pair of flanges 132 are formed with an inner raceway 133 and an outer raceway 134, respectively.

The outer raceway 134 is imaginary drawn along the longitudinal direction from the outside of the flange 132 toward the inside of the intermediate body 131, that is, from the outside of the flange 132 to the middle of the intermediate body 131. It may be formed to protrude toward the centerline direction of.

A portion of the plurality of balls 129 of the first bearing 120 is accommodated in the outer raceway 134, respectively. Therefore, when the intermediate leg body 131 is seated on the outer leg body 111, the intermediate body 131 and the outer leg body 111 are disposed in a shape interposed between the retainer 121 and the ball 129. It is accommodated in the raceway 113 of the outer leg body 111 and the outer raceway 134 of the middle leg body 131 so that the outer leg body 111 and the middle leg body 131 are relatively smooth. Sliding can be moved.

The inner raceway 133 is formed to protrude opposite to the outer raceway 134. The inner raceway 133 is formed to accommodate the plurality of balls 149 of the second bearing 140 to be described below. .

In addition, the stopper 135 may be formed in the intermediate leg body 131 to limit the moving range of the inner leg body 151 to be described below, and the stopper 135 may be drawn out of the middle leg body 131. (A) It may be formed at the end.

The second bearing 140 may include a retainer 141 and a ball 149.

At both edges of the retainer 141, a pair of flanges 142 bent in the same direction around the longitudinal direction of the retainer 141 are formed, and the flange 142 is formed along the longitudinal direction. A plurality of ball insertion holes 143 are formed. The plurality of balls 149 may be inserted one by one into the plurality of ball insertion holes 143.

The second bearing 140 is seated on the intermediate leg body 131, wherein a part of the plurality of balls 149 is accommodated in the inner raceway 133.

The inner rail 150 includes an inner rail body 151 and a cushioning means 159.

As shown in the drawing, a pair of flanges 152 bent in the same direction about the longitudinal direction of the inner leg body 151 are formed on both sides of the inner leg body 151. The pair of flanges 152 are each formed with a raceway 153 along the longitudinal direction, the raceway 153 is formed so that a portion of the ball 149 can be accommodated.

Therefore, when the inner leg body 151 is seated on the middle leg body 131, the retainer 141 is disposed between the middle leg body 131 and the inner leg body 151, and a plurality of balls ( 149 is accommodated between the inner raceway 133 and the raceway 153 of the inner leg body 151 to be in contact with the cloud so that the intermediate leg body 131 and the inner leg body 151 can be moved relatively smoothly. Can be.

The inner leg body 151 may be formed with a stopper 156 that contacts the stopper 135 described above to limit the range in which the inner leg body 151 is slid in the inlet direction B with respect to the middle leg body 131. Can be. As shown in the drawing, the stopper 156 may be formed at an end portion of the inner leg body 151 in the drawing direction A. As shown in FIG.

The shock absorbing means 159 is to relieve the shock that may occur when the stopper 135 of the inner leg body 151 and the stopper 135 of the middle leg body 131 come into contact with the elastic material. It may be manufactured and coupled to the stopper 156 as shown, or may be coupled to the stopper 135 although not shown.

The inner leg body 151 has a stopper 155 for limiting the movement range of the retainer 141, a fastening part 157 for fixing the inner leg body 151 to the storage body 11 or the drawer 12, and The fastening hole 158 may be formed.

As such, the outer leg member 111, the middle leg member 131, and the middle leg member 131 and the inner leg member 151 may be coupled to each other so as to be relatively slidable. 120 and the second bearing 140 may be smoothly implemented.

For reference, when the intermediate leg body 131 slides in the drawing direction A with respect to the outer leg body 111, the plurality of balls 129 rotate between the raceway 113 and the outer raceway 134. As the retainer 121 is also moved toward the direction in which the intermediate body 131 is moved.

In this process, when the intermediate leg body 131 reaches the limit of the movable range with respect to the outer leg body 111, the stopper support part 125 and the stopper 115 formed on the retainer 121 come into contact with each other. Since the retainer 121 is no longer moved, the intermediate leg body 131 is no longer moved in the drawing direction A with respect to the outer leg body 111.

Similarly, the stopper 135 formed on the intermediate receptacle 131 is in contact with the stopper support part 146 formed at the end of the retaining direction 141 in the drawing direction A, or the stopper 155 formed on the inner receptacle 151 is provided. When it comes into contact with the stopper support part 145 formed at the end of the retaining direction B of the retainer 141, the inner leg body 151 is no longer moved in the drawing direction A with respect to the middle leg body 131.

On the other hand, the operation block 160 may be coupled to the inlet direction (B) side of the inner leg body 151. In this case, the operation block 160 is disposed on the surface of the inner leg body 151 facing the middle leg body 131.

The actuating block 160 may include an actuating block body 161, and the actuating block body 161 may be provided with a fastening groove 162 and a guide face 163. Explain.

3 and 4 show the automatic closing means of the slide shown in FIG. 1. It demonstrates with reference to FIG. 3 and FIG.

3 and 4, the automatic closing means 200 may include a closing means body 210, the operating rail 211, the slider 230, the operating pin 250 and the elastic body 270.

As described with reference to FIG. 1, the closing means main body 210 has one side of the other surface of the outer rail (110 of FIG. 1), that is, the opposite side of the surface from which the outer rail 110 is coupled to the receiving body (11 of FIG. 1). End, i.e., the end of the inlet direction B as shown.

As shown, the closing means body 210 may be provided with an operating rail 211 and the elastic fixing portion 215.

The operating rail 211 protrudes from the closing means main body 210 toward the other side of the outer rail 110, that is, the drawing direction (A). A guide groove 212 may be formed in the operation rail 211, and the guide groove 212 includes a straight portion 212a and a curved portion 212b.

The straight portion 212a is a groove formed in the direction parallel to the drawing direction A or the drawing direction B, and the curved portion 212b is the end of the other side of the outer rail 110 of the straight portion 212a, that is, the drawing direction. It extends from the end of (A). Here, the curved portion 212b may have a shape bent toward a direction different from the direction parallel to the straight portion 212a. The direction in which the curved portion 212b faces and the direction parallel to the straight portion 212a represent approximately a right angle. Can be.

The fastening hole 216 formed in the closing means main body 210 and the fastening hole 217 formed at the end of the operating rail 211 are for fixing the closing means main body 210 to the outer rail 110, the outer rail 110 Is formed corresponding to the fastening hole (116 of FIG. 1).

The slider 230 is coupled to the operation rail 211 to be slidable along the longitudinal direction of the operation rail 211. The slider 230 may include a pinhole 231, a push rod 233, an elastic fixing part 235, and a buffer part 219.

The pinhole 231 is formed to have a long hole shape formed in a direction corresponding to the curved portion 212b, and the elastic fixing part 325 may be formed at both sides of the slider 230. As shown in the figure, the push rod 233 may protrude from the elastic fixing part 325 toward the direction in which the pull-out direction A, that is, the actuation rail 211 is parallel to the direction protruding from the closing means body 210. . For reference, although not shown, the push rod 233 may protrude from other portions of the slider 230 in addition to the elastic fixing part 325.

The shock absorbing portion 219 is to alleviate the shock generated when the end of the operating rail 211 collides with the intermediate rail 130 (see FIG. 1), and may be formed at the end of the operating rail 211 as shown. Although not shown, it may be formed at the end of the push rod 233.

For reference, the shock absorbing portion 219 may be formed to protrude from the slider 230 as shown, or may be formed by coupling the shock absorbing member made of an elastic material to the slider 230 although not shown. In addition, although not shown, the shock absorbing member may be coupled to a portion in contact with the slider 230 of the intermediate rail (130 of FIG. 1).

One end of the actuating pin 250 is inserted into the guide groove 212, and the other end thereof is installed to protrude through the pinhole 231 formed in the slider 230. For reference, the structure and operation principle of the actuating pin 250 is described in detail in Korean Patent Publication No. 10-2008-0089126 filed by the applicant.

One end of the elastic body 270 is fixed to the elastic body fixing portion 215 formed on the closing means body 210, the other end is fixed to the elastic body fixing portion 235 formed on the slider 230. At this time, the elastic body 270 is used that the elastic force is applied in the direction of contraction again when it is tensioned, and elastically supports the slider 230 in the inlet direction (B). That is, the elastic body 270 elastically supports the slider 230 with respect to the closing means main body 210 so that the gap between the slider 230 and the closing means main body 210 is minimized.

5 to 7 are views for explaining the operation of the slide device for a drawer according to the first embodiment of the present invention. For reference, FIGS. 5 to 7 are simplified parts of an automatic closing means (200 of FIG. 1) of the slide device for a drawer (1 of FIG. 1) according to the first embodiment of the present invention. The bearing (120 in FIG. 2) and the second bearing (140 in FIG. 2) are partially shown only in FIG. 6, and all of them are omitted in the drawings. In addition, the operation block body 161 is disposed at a position covered by the inner leg body 151, but is shown by a solid line for convenience of description.

FIG. 5 shows a part of the slide device for drawing (1 in FIG. 1) when the drawer (12 in FIG. 1) is moved to the end in the pulling direction B and closed.

When the drawer 12 is in a closed state, the intermediate leg body 131 and the inner leg body 151 are as close as possible to the closing means body 210 within the range that can be moved in the pulling direction B as shown. Is placed in position. That is, the end (B) of the intermediate leg body 131 is disposed at a position in contact with the end of the pull direction (A) of the push rod 233, and the inner leg body 151 is fastened to the operation block body 161. The other end of the actuating pin 250 is disposed in the groove 162. The other end of the actuating pin 250 refers to a portion protruding through the pinhole 231 of the slider 230 as described above.

At this time, since one end of the actuating pin 250 is inserted into the straight portion 212a, the actuating pin 250 does not move along the longitudinal direction of the pinhole 231. Therefore, when the other end of the actuating pin 250 is located in the fastening groove 162, the other end of the actuating pin 250 is fastened to the fastening groove 162 and is not separated from the actuating block body 161.

When the user moves the drawer 12 in the drawing direction A to open the drawer 12 in this state, the inner leg body 151 coupled to the drawer 12 moves in the drawing direction A. do. At this time, since the operating pin 250 is fastened to the fastening groove 162, the slider 230 also moves in the drawing direction (A) as the inner leg body 151 to which the operating block body 161 is coupled is moved. do.

Therefore, the closing means body 210 and the elastic body 270 is fixed to both ends of the slider 230 is extended so that the slider 230 is elastically supported in the direction of the closing means body 210. That is, if the force for moving the inner leg body 151 in the drawing direction A is released, the inner leg body 151 may be returned to the state shown in FIG. 5.

On the other hand, as the slider 230 is moved in the drawing direction A, the intermediate leg body 131 is pressed by the push rod 233 and moves in the extraction direction A together with the inner leg body 151.

FIG. 6 illustrates a state in which the fastening state of the inner leg body 151 and the slider 230 is released while the drawer (12 of FIG. 1) is moved in the drawing direction (A).

Referring to FIG. 6, the state in which the operation pin 250 is fastened to the fastening groove 162 is released.

As described above, when the slider 230 reaches the position of the curved portion 212b while the drawer 12 continues to move in the drawing direction A, it is guided by the straight portion 212a and moves along the straight portion 212a. One end of the operation pin 250 is guided by the curved portion 212b. Therefore, the other end of the actuating pin 250 is moved to the end of the curved portion 212b of the pinhole 231 along the edge of the fastening groove 162 formed in the actuating block body 161, thereby actuating pin 250 The other end of the) is separated from the fastening groove 162.

When the other end of the actuating pin 250 is separated from the fastening groove 162, the connection between the inner leg body 151 and the slider 230 is released, so that the drawer 12 applied to the inner leg body 151 is withdrawn. The force to be transmitted is not transmitted to the slider 230.

The slider 230 is moved to the inner lever body 151 and the withdrawal direction (A) until the actuating pin 250 is disengaged from the fastening groove 162 so that the intermediate lever 131 pressed by the push rod 233. ) Is also moved in the drawing direction A together with the inner leg body 151.

At this time, the slider 230 is in a state where one end of the actuating pin 250 is fastened to the end of the curved portion 212b. That is, until the other end of the actuating pin 250 is applied with a force in a direction toward the position where the straight portion 212a and the curved portion 212b are connected, until one end of the actuating pin 250 returns to the straight portion 212a. The slider 230 is maintained in contact with the end of the pull-out direction (A) of the operating rail (211).

7 shows a state where the inner leg body 151 and the middle leg body 131 are further moved together in the drawing direction A together.

As described above, when the inner leg body 151 starts to move in the drawing direction A from the closed position of the drawer 12, the inner leg body 151, the slider 230, and the middle leg body 131 ) Are moved toward the drawing direction A together.

In this process, the slider 230 stops moving after the limit of the range where the slider 230 is movable, that is, the position where one end of the operation pin 250 is fastened to the curved portion 212b. When the movement of the slider 230 is stopped, the intermediate leg body 131 is released from contact with the push rod 233 and no longer pressurized.

Nevertheless, after the intermediate reinforcement body 131 starts moving together with the inner reinforcement body 151, the intermediate reinforcement body 131 is not pressurized by the push rod 233 as shown in the illustration. The 131 may be moved in the direction in which the inner leg body 151 is moved together, that is, in the withdrawal direction (A).

This is due to the difference in inertia acting on the moving intermediate leg body 131 and the magnitude of the friction coefficient between the inner leg body 151, the intermediate leg body 131, and the outer leg body 111. It demonstrates with reference to 8.

FIG. 8 is a schematic cross-sectional view of the portion E shown in FIG. 6.

Referring to FIG. 8, the ball (129 of FIG. 2) of the first bearing 120 (FIG. 2) is interposed between the flange 112 of the outer leg body 111 and the flange 132 of the middle leg body 131. The ball (149 in FIG. 2) of the second bearing (140 in FIG. 2) is interposed between the flange 132 of the intermediate leg body 131 and the flange 152 of the inner leg body 151.

The ball 129 of the first bearing 120 (FIG. 2) is disposed in the ball insertion hole 123 formed in the flange 122 of the retainer (121 of FIG. 2), and the ball of the second bearing (140 of FIG. 2). 149 is disposed in the ball insertion hole 149 formed in the flange 142 of the retainer (141 of FIG. 2).

Here, the inner diameter of the ball insertion hole (123, 143) is generally formed to be larger than the outer diameter of the ball (129, 149), the outer leg Japanese body 111, the middle leg Japanese body in the process of the drawer 12 is drawn out or drawn in Since 131 and the inner leg body 151 are relatively slidably moved, it is common that any part of the surfaces of the

balls

129 and 149 is in contact with a part of the inner circumferential surface of the ball insertion holes 123 and 143.

As described above with reference to FIGS. 5 to 7, when the drawer (12 of FIG. 1) starts to move in the withdrawal direction A from the closed position, the inner leg body 151 fixed to the drawer 12, The slider 230 in a state of being fastened to the inner leg body 151 by the operation pin 250 and the intermediate leg body 131 pressed against the push rod 233 protruding from the slider 230 are moved together. To start.

Vi shown in the drawing shows the moving speed of the inner leg body 151 and Vm is the movement speed of the middle leg body 131. The inner leg body 151 and the middle leg body 131 are moved together. And Vm have the same magnitude.

Here, the inner leg body 151 fixed to the drawer 12 is applied not only to the load of the drawer 12 itself but also to the loads of the enclosures accommodated in the drawer 12, and this load is intermediate through the ball 149. It is delivered to the renal body 131.

Therefore, immediately after the intermediate reinforcement body 131 starts to move together with the inner reinforcement body 151, the inertial force is exerted on the intermediate reinforcement body 131 and the inner reinforcement body 151 by movement, and the intermediate reinforcement body 131 is applied. And the moving state may be continued until an external force in a direction opposite to the direction in which the inner leg body 151 is moved is applied.

In addition, since the relative movement does not occur between the inner leg body 151 and the middle leg body 131 as described above, the flange 132 of the middle leg body 131 and the flange 152 of the inner leg body 151. The intervening balls 149 are not rotated. Therefore, the static frictional force is applied to the surface of the ball 149 that is not rotated, and the motion frictional force is applied to the surface of the ball 129 being rotated.

It is well known that the kinematic friction coefficient is always smaller than the static friction coefficient. Therefore, the static friction coefficient of the static friction force acting on the ball 149 of the second bearing 140 is greater than the motion friction coefficient of the motion friction force acting on the ball 129 of the first bearing 120, Due to the difference, the intermediate leg body 131 moved together with the inner leg body 151 by the push rod 233 is moved together with the inner leg body 151 even after the contact with the push rod 233 is released. Can be maintained.

As described above, the intermediate leg body 131 is pressed by the push rod 233 and moved together with the inner leg body 151 in the process of drawing out the closed drawer 12 to open the slider 230. After the push rod 233 is no longer pressurized out of the operating range of), due to the difference in the inertia force and the friction coefficient described above, the intermediate leg body 131 is maintained to move with the inner leg body 151. do.

The intermediate leg body 131 is moved together with the inner leg body 151 to the limit of the range that can be relatively sliding relative to the outer leg body 111, and after that, the movement of the intermediate body body 131 is stopped. The inner leg body 151 is slidably moved with respect to the middle leg body 131.

Therefore, the drawer slide device 1 according to the first embodiment of the present invention has a drawer direction A together with the inner leg body 151 and the middle leg body 131 in the process of drawing out the closed drawer 12. The state is continued until the moving direction A of the intermediate lever body 131 is drawn out.

Therefore, the slide device 1 for a drawer according to the first embodiment of the present invention allows the intermediate rail (130 in FIG. 1) and the inner rail (150 in FIG. 1) to move together when the drawer 12 is pulled out. To improve the load bearing capacity of the slide (100 in FIG. 1), the drawer 12 may be smoothly drawn out, and the slide 100 is excessively sag or noise is not generated during the withdrawal of the drawer 12. You can do that. This is because the intermediate rail (not shown) of a conventional triple slide (not shown) is operated only completely manually, whereas the slide device 1 for a drawer according to the first embodiment of the present invention has an automatic closing means ( 200 is an effect that can be obtained by allowing the operation of the intermediate rail 130 to be adjusted.

9 to 11 are views for explaining the operation of the slide device for a drawer according to the second embodiment of the present invention.

9 is a view when the drawer of the slide device for a drawer according to the second embodiment of the present invention is in a closed state.

Referring to FIG. 9, an incision 139 is formed at one end of the intermediate leg body 131 toward the closure means body 210, that is, at the end of the inlet direction (B). The incision 139 is an operating rail when the intermediate leg body 131 is in a state where the drawer 12 is closed, that is, the intermediate leg body 131 is in a position where the intermediate body body 131 is moved to the pulling direction B in the movable range as much as possible. 211 is formed to a size that is accommodated.

Therefore, the portion of the intermediate reinforcement body 131 in which the cutout portion 139 is not formed is in contact with the slider 230.

FIG. 10 illustrates a state in which the fastening state of the inner leg body 151 and the slider 230 is released while the drawer (12 of FIG. 1) is moved in the drawing direction (A).

Referring to FIG. 10, the state in which the operation pin 250 is fastened to the fastening groove 162 is released. The process of releasing the state in which the operating pin 250 is fastened to the fastening groove 162 is the same as described with reference to FIG.

However, in the slide device for a drawer according to the second embodiment of the present invention, the middle of the end portion (B) end of the intermediate leg 131 until the state in which the operation pin 250 is fastened to the fastening groove 162 is released. The portion where the cutout 139 is not formed is pressed in the drawing direction A by the slider 230 in contact with the slider 230.

Accordingly, the intermediate leg body 131 is moved in the drawing direction A together with the inner leg body 151.

FIG. 11 shows a state where the inner leg body 151 and the middle leg body 131 of the slide device for a drawer according to the second embodiment of the present invention are further moved in the drawing direction A. As shown in FIG.

Due to the difference in the inertia and the friction coefficient described above with reference to FIG. 8, the contact with the slider 230 is released from the portion where the cutout 139 is not formed in the end portion B of the intermediate leg 131 in the pulling direction B. FIG. Even if the pressure is no longer pushed in the drawing direction A, the intermediate leg body 131 may be moved in the drawing direction A together with the inner leg body 151.

Such a slide device for a drawer according to the second embodiment of the present invention, in addition to the effect of the slide device (1 in FIG. 1) according to the first embodiment of the present invention described with reference to FIG. As shown in the cutout 139 is formed to have a length (D1) corresponding to the length of the operation rail 211, the length of the operation rail 211 is manufactured to change as necessary to operate the automatic closing means The effect of adjusting the range can be obtained. In other words, when the drawer 12 is moved in the inlet direction (B) as necessary, the range in which automatic closing can be made can be extended or shortened.

In addition, in the slide device for drawers according to the second embodiment of the present invention, the length of the intermediate lever body 131 is extended by D1, so that the drawer 12 transferred to the intermediate body body 131 through the inner lever body 151. Since the length of the load) is also supported by the outer leg body 111, the structural strength of the slide device for a drawer according to the second embodiment of the present invention can also be increased.

Figure 12 shows the automatic closing means of the slide device for the drawer according to the third embodiment of the present invention, Figures 13 to 15 for explaining the operation of the slide device for the drawer according to the third embodiment of the present invention The figure is shown.

Referring to FIG. 12, the automatic closing means of the slide device for a drawer according to the third embodiment of the present invention is compared with the automatic closing means (200 of FIG. 3) described with reference to FIGS. 3 and 4. ) Is different from the thickness (t), the fixing groove 218 is formed, the configuration is the same except that the shock absorbing portion 234 is formed instead of the push rod (233 of Figure 3) is not repeated description.

12 and 13 together, the thickness t of the operating rail 211a provided in the automatic closing means of the slide device for a drawer according to the third embodiment of the present invention, that is, the operating rail 211a is an outer rail. Although not shown in detail, the height protruding from the surface facing the intermediate reinforcement body 113 which is the other surface of the main body 111 is formed to be lower than the gap formed between the other surface of the outer reinforcement body 111 and the intermediate reinforcement body 113.

Therefore, when the drawer (12 of FIG. 1) is closed and the intermediate leg body 131 is moved as far as possible in the pulling direction B, the part B of the intermediate leg body 131 is shown in FIG. As shown, a portion of the pull-out direction A of the operating rail 211a may be covered by the intermediate body 131. That is, when the drawer 12 is retracted and closed, the withdrawal direction A portion of the operating rail 211a may be located between the outer leg member 111 and the middle leg member 131.

In order to minimize the thickness t of the operation rail 211a as described above, the operation rail 211a is provided within a range such that the depth of the guide groove 212 has a depth capable of smoothly guiding one end of the operation pin 250. It is possible to minimize the thickness (t) of the.

For reference, although not shown, an insertion hole having a shape corresponding to that of the operation rail 211a is formed in a portion where the operation rail 211a of the outer receptacle body 111 is disposed, and the operation rail is formed in the insertion hole. When the 211a is inserted, the thickness t of the operation rail 211a can be secured by the thickness of the outer leg body 111. That is, by allowing the operation rail 211a to be inserted into an insertion hole (not shown), the height at which the operation rail 211a protrudes from the surface facing the intermediate rail body 113 of the outer rail body 111 is increased without increasing the operation rail ( The thickness t of 211a) may be increased by the depth of the insertion hole. Accordingly, the guide groove 212 of the operating rail 211a may have a sufficient depth.

Alternatively, by allowing the operation rail 211a to be inserted into an insertion hole (not shown), the space occupied by the automatic closing means of the slide device for a drawer according to the third embodiment of the present invention can be minimized.

On the other hand, in order to minimize the thickness (t) of the operating rail (211a), the fixing groove 218 may be formed at the end of the operating rail (211a) instead of the fastening hole (216 of FIG. 3) described with reference to FIG. . A portion of the outer receptacle body 111 is cut into the fixing groove 218 and a fixing piece (not shown) that is bent may be inserted to allow the end of the operation rail 211a to be fixed to the outer receptacle body 111.

Thus, by forming the thickness t of the operation rail 211a low, as described above, the cutout portion 139 of FIG. 9 is not formed in the intermediate rail body 131 or the push rod (not shown) in the slider 230. It is possible to make the intermediate body 131 contact the slider 230 without forming 233 of FIG. 3.

A buffer unit 234 may be formed at a portion where the slider 230 and the intermediate leg body 131 contact each other. The buffer unit 234 may reduce the impact or noise caused by the collision between the slider 230 and the intermediate body 131. Here, the buffer unit 234 may be formed as a buffer protrusion protruding from the slider 230, as shown, it may be made of a buffer member made of an elastic material coupled to the intermediate body 131, although not shown.

Referring to FIG. 14, the state in which the operation pin 250 is fastened to the fastening groove 162 is released. The process of releasing the state in which the operating pin 250 is fastened to the fastening groove 162 is the same as described with reference to FIG.

In the slide device for a drawer according to the third embodiment of the present invention, the end portion of the intermediate leg 131 in the inlet direction B of the intermediate leg 131 until the state in which the operating pin 250 is fastened to the fastening groove 162 is released. 230). Therefore, the intermediate leg body 131 is pressed by the slide 230 in the extraction direction A, and is moved in the extraction direction A together with the inner leg body 151.

Referring to FIG. 15, the inner leg body 151 and the middle leg body 131 of the slide device for a drawer according to the third embodiment of the present invention are further moved in the drawing direction A. FIG.

Due to the difference in the inertia and the friction coefficient described with reference to FIG. 8, even if the intermediate leg body 131 is not contacted with the slider 230 and is no longer pressed in the drawing direction A, the intermediate leg body 131 ) May move in the drawing direction A together with the inner leg body 151.

Such a slide device for a drawer according to the third embodiment of the present invention, as compared to the slide device for the drawer according to the second embodiment of the present invention described above, is automatic without the structural strength of the intermediate leg 131 is reduced. The effect of extending the operating range of the closing means can be obtained. That is, since the cutout portion 139 of FIG. 9 is not formed in the intermediate leg body 131 of the slide device for a drawer according to the third embodiment of the present invention, the strength reduction of the intermediate leg body 131 does not occur. Can be.

And, as shown in Figure 13, the slide device for the drawer according to the third embodiment of the present invention is necessary, since the length of the intermediate rail body 131 does not affect the length (D2) of the operating rail (211a) at all According to the manufacture of the operation rail (211a) to change the length can be obtained the effect of adjusting the operating range of the automatic closing means. In other words, when the drawer 12 is moved in the inlet direction (B) as necessary, the range in which automatic closing can be made can be extended or shortened.

On the other hand, the operating pin (250 of FIGS. 3 and 12) of the automatic closing means (see FIGS. 3 and 12) provided in the embodiments of the present invention described above is provided in the guide groove (212 of FIGS. 3 and 12). The structure and manner of operation guided by it can be variously changed. For example, the structure and operation manner of the operation pin 250 may be changed as described in the Republic of Korea Patent Publication No. 1056922, 1114477 and 1129569 filed by the applicant.

Although the slide apparatus for the drawer according to the embodiments of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein. That is, one of ordinary skill in the art who understands the spirit of the present invention can easily suggest other embodiments by adding, changing, deleting, and adding components within the scope of the same spirit, but this also falls within the spirit of the present invention. something to do.

Claims

A slide device for a drawer for guiding a drawer into or out of a storage space formed in a storage body,

An outer rail having one surface fixed to one of the accommodation body and the drawer;

An intermediate rail slidably coupled to the outer rail in a direction parallel to a longitudinal direction of the outer rail;

An inner rail slidably coupled to the intermediate rail in a direction parallel to a longitudinal direction of the intermediate rail, and fixed to another one of the housing body and the drawer; And

It includes an automatic closing means coupled to the outer rail,

The automatic closing means,

A closing means body coupled to one end of the other surface of the outer rail;

A guide having a straight portion parallel to the direction in which the drawer is drawn out and a curved portion extending from the end of the straight portion to a direction different from the straight portion from the end of the straight portion; Grooved working rails;

A slider coupled to the operating rail to be slidable along the longitudinal direction of the operating rail;

One end is inserted into the guide groove, and the other end of the operation pin protrudes through the slider; And

One end is fixed to the closing means body and the other end is fixed to the slider comprises an elastic body for elastically supporting the slider in the direction of the closing means body,

And the slider is in contact with the intermediate rail when the drawer is withdrawn until the one end of the actuating pin reaches the curved portion through the straight portion, and the inner rail and the intermediate rail are moved together.
The method of claim 1,

And a slide rod protruding from the slider, the push rod being protruded in contact with the intermediate rail when the drawer is pulled out.
The method of claim 1,

One end portion of the intermediate rail facing the closing means main body is formed with a cutout portion for receiving the operation rail when the drawer is retracted,

Part of the one end of the intermediate rail except for the cutout slide device for the drawer is pressed in contact with the slider when the drawer is drawn out.
The method of claim 1,

The height protruding from the other surface of the outer rail of the operation rail is formed lower than the gap formed between the other surface of the outer rail and the intermediate rail,

When the drawer is in the retracted state, a portion facing the other side of the outer rail of the operation rail is located between the outer rail and the intermediate rail,

One end of the intermediate rail toward the closing means main body is in contact with the slider when the drawer is pulled slide device for the drawer.
The method according to claim 1 or 4,

Insertion holes of a shape corresponding to the operating rail is formed in a portion where the operation rail of the outer rail is disposed,

Slider device for a drawer in which the operating rail is inserted into the insertion hole.
The method according to any one of claims 2, 3 and 4,

A slide device for a drawer formed with a buffer portion in a portion where the slider and the intermediate rail contact.
The method of claim 6,

The buffer part,

Slider device for a drawer comprising a buffer member made of an elastic material bonded to the slider or the intermediate rail, or including a buffer protrusion protruding from the slider.