KR20130117619A - Sliding apparatus for drawer - Google Patents

Abstract

PURPOSE: A slide device for a drawer is provided to guide the movement of the drawer and to automatically move the drawer in a predetermined range. CONSTITUTION: A slide device for a drawer includes a slide (100), an automatic closing unit (200), an outer rail (110), an intermediate rail (130), an inner rail (150), a closing unit main body, an operation rail with a guide groove, a protruded operation pin, and an elastic body. The slide includes the outer rail, the intermediate rail, and the inner rail. One side of the outer rail is fixed to one of either an accommodation body or the drawer. The intermediate rail slides on the outer rail in the longitudinal direction of the outer rail. The inner rail slides on the intermediate rail in the longitudinal direction of the intermediate rail and is fixed to one of either the accommodation body or the drawer.

Description

[0001] SLIDING APPARATUS FOR DRAWER [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slide apparatus for a drawer, and more particularly, to a slide apparatus for a drawer that guides a drawer of a drawer and guides the drawer automatically within a predetermined range.

The drawer is applied to various storage means such as furniture, cold storage, cooking utensils, electronic products, etc., in which a storage space is formed.

In this way, a variety of stored items can be stored in the drawer. In case of storing things sensitive to temperature change such as medicine or food to be stored at a certain temperature, or when heat exchange between the storage space and the outside must be blocked have.

Therefore, once the user has completed the work of loading or unloading the above-described items into or out of the drawer and then closing the drawer, it is necessary to prevent the drawer from being opened due to a user's unintended cause such as a small inclination angle, Needs to be. The present applicant has proposed an automatic closing device of slides through Korean Patent Registration No. 1150479 in order to meet such a necessity.

On the other hand, usually two to three rails are provided on the slide. In recent years, a slide having three rails has been increasingly used in order to increase the range in which the drawer is drawn out from the storage body.

Here, the three rails provided on the slide are generally arranged such that the outer rails, the middle rails, and the inner rails, which are sequentially arranged in parallel, are slidably coupled to each other, and the width and the cross-sectional area thereof decrease from the outer rails to the inner rails Shape. That is, the structural strength may become weaker toward the inner rail.

If the heavy drawer in which drawers and drawers are guided by these slides is stored heavy or the weight of the drawer itself is heavy, a great deal of force may be applied to the slide. That is, when the drawer is pulled out, the inner rail is first slid to the middle rail and protruded from the inner rail, the load may be concentrated on the inner rail. In this case, as described above, since the structural strength of the inner rail is weaker than that of the middle 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 occurs, Which may lead to inconveniences such as the draw-out or the draw-in of the drawer being not smoothly performed.

Korean Registered Patent No. 1150479

In the embodiment of the present invention, the load bearing capacity of the slide is improved in the process of drawing the drawer, so that the drawer is smoothly drawn out and noise is prevented.

Further, embodiments of the present invention are intended to increase the automatic closing range of the drawer without degrading the strength.

In addition, embodiments of the present invention allow the drawer to be automatically pulled to a position where the drawer is closed when the opened drawer is pulled to a predetermined range, and the drawer in the closed state is opened .

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 against 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 the embodiment of the present invention, since the middle rail and the inner rail are moved together when the drawer is pulled out, the load bearing capacity of the slide can be improved, the drawer can be smoothly drawn, Can be prevented from being generated.

According to the embodiment of the present invention, the height of the operating rail of the automatic closing means is reduced so that the length of the intermediate rail extends to the upper side of the operating rail, so that the operating range of the automatic closing means Can be extended or shortened.

According to the embodiment of the present invention, when the drawer which has been opened by the addition of 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, It can be prevented from being opened by a cause.

1 is a perspective view illustrating an installation state of a drawer slide device according to a first embodiment of the present invention;
Fig. 2 is an exploded perspective view of the slide shown in Fig.
Figs. 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 drawer shown in Fig. 1
8 is a cross-sectional view of part E shown in Fig. 6
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

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments thereof are illustrated in the drawings and described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The same reference numerals are given to the same or equivalent components in the embodiments of the present invention, and the same reference numerals are given to the same or equivalent elements, and duplicate descriptions may be omitted.

Hereinafter, 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 drawer slide device according to a first embodiment of the present invention.

1, a slide device 1 for a drawer according to a first embodiment of the present invention is installed in a storage means 10 and a slide 100 for a drawer and an automatic closing means 200 ).

The storage means 10 includes a storage body 11 in which a storage space C is formed and a storage space 11 in which the storage space C is formed. C and a drawer 12 installed to be able to be drawn out and drawn in. A direction A in which the drawer 12 is moved for opening the drawer 12 is referred to as a draw direction A so that the drawer 12 can be inserted into or removed from the storage space C (B) is referred to as a pull-in direction (B).

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

One side of the outer rail 110 can be fixedly coupled to one side of the housing body 11, that is, one side wall in the storage space C. At this time, the outer rail 110 may be arranged such that the longitudinal direction of the outer rail 110 is parallel to the draw-out direction A and the draw-in direction B of the drawer 12.

The intermediate rail 130 is slidably coupled to the other surface side of the outer rail 110. 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 the longitudinal direction thereof is parallel to the longitudinal direction of the intermediate rail 130. The inner rail 150 can be fixedly coupled to one surface of the drawer 12 facing the inner surface of one side of the storage body 11, as shown in the figure.

The automatic closing means 200 can be coupled to the other end surface of the end portion B of the outer rail 110. The automatic closing means 200 will be described below with reference to FIGS.

The drawer slide device 1 guides the drawer 12 smoothly in and out from the storage body 11. When the drawer 12 that has been opened reaches a predetermined range or more, To be closed.

For reference, the slide device 1 for a drawer may be such that the outer rail 110 is fixed to the receiving body 11 and the inner rail 150 is 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 main body 11. [

When the unillustrated outer rail 110 is fixed to the drawer 12 and the inner rail 150 is fixed to the receiving body 11, the drawer 12, which was opened by the automatic closing means 200, The automatic closing means 200 is coupled to the other end surface of the outer rail 110 in the pull-out direction A, as shown in the drawing.

Accordingly, the pulling direction A and the pulling direction B defined above are intended to clarify the directional standard necessary for explaining the structure and operation of the embodiments exemplified in this specification, and only the embodiments described herein And is not an absolute directional expression.

The drawer slide device 1 may be attached to one side of the drawer 12 at one or more sides thereof or a plurality of ones at one side of the drawer 12, or may be variously arranged as needed. However, even when there are a plurality of drawer slide apparatuses 1, the structure thereof is the same, so that one drawer slide apparatus 1 will be described, and the remaining description will be omitted.

A bearing for smooth sliding movement may be interposed between the outer rail 110 and the intermediate rail 130 and between the intermediate rail 130 and the inner rail 150. This will be described with reference to FIG.

Fig. 2 is an exploded perspective view of the slide shown in Fig.

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 rail main body 111, a pair of flanges 112 are formed which are bent in the same direction about the longitudinal direction of the outer rail main body 111 as shown in the figure. A raceway 113 is formed in the pair of flanges 112 along the longitudinal direction. The raceway 113 may be formed in various shapes to accommodate a part of the ball 129 to be described below. In the figure, the raceway 113 having the shape of a groove formed along the longitudinal direction of the flange 112 Are shown.

A stopper 115 for restricting the movement range of the retainer 121 to be described below is provided on the outer rail main body 111 and a stopper 115 for limiting the movement range of the retainer 121, A fastening hole 118 for fixing the outer rail main body 116 and the outer rail main 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.

A pair of flanges 122 are formed on both side edges of the retainer 121 so as to be bent in the same direction about the longitudinal direction of the retainer 121 as shown in the figure, A plurality of ball insertion holes 123 are formed. A plurality of balls 129 may be inserted into the plurality of ball insertion holes 123 one by one.

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

The intermediate rail 130 includes a middle rail body 131.

As shown in the figure, a pair of flanges 132 are formed on both sides of the intermediate rail main body 131 and bent in the same direction about the longitudinal direction of the intermediate rail main body 131. An inner raceway 133 and an outer raceway 134 are formed in the pair of flanges 132, respectively.

The outer raceway 134 extends from the outside of the flange 132 toward the inside of the intermediate rail body 131, that is, from the outside of the flange 132 to the middle portion of the middle rail body 131, As shown in Fig.

And a plurality of balls 129 of the first bearing 120 are accommodated in the outer raceway 134, respectively. When the intermediate rail main body 131 is seated in the outer rail main body 111, the retainer 121 is disposed between the intermediate rail main body 131 and the outer rail main body 111, The outer rail main body 111 and the intermediate rail main body 131 are relatively smoothly received by the raceway 113 of the outer rail main body 111 and the outer raceway 134 of the intermediate rail main body 131, And can be slidably moved.

The inner raceway 133 is formed to protrude in opposition to the outer raceway 134. The inner raceway 133 is formed to accommodate a plurality of balls 149 of the second bearing 140, .

The stopper 135 may be formed on the intermediate rail body 131 to limit the moving range of the inner rail body 151 to be described below. (A).

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

A pair of flanges 142 are formed on both side edges of the retainer 141 and bent in the same direction about the longitudinal direction of the retainer 141 as shown in FIG. A plurality of ball insertion holes 143 are formed. A plurality of balls 149 may be inserted into the plurality of ball insertion holes 143 one by one.

The second bearing 140 is seated in the intermediate rail body 131, wherein a portion of the plurality of balls 149 is received in the inner raceway 133.

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

A pair of flanges 152 are formed on both sides of the inner rail main body 151 and bent in the same direction about the longitudinal direction of the inner rail main body 151 as shown in the figure. One raceway 153 is formed in the pair of flanges 152 along the longitudinal direction, and the raceway 153 is formed so that a part of the ball 149 can be received.

Therefore, when the inner rail main body 151 is seated on the intermediate rail main body 131, the retainer 141 is disposed between the intermediate rail main body 131 and the inner rail main body 151, 149 are received between the inner raceway 133 and the raceway 153 of the inner rail body 151 and are in rolling contact so that the intermediate rail body 131 and the inner rail body 151 slide relatively smoothly .

The stopper 156 is formed on the inner rail main body 151 so as to limit the range in which the inner rail main body 151 is slidably moved in the pulling direction B with respect to the intermediate rail main body 131 in contact with the stopper 135 described above . The stopper 156 may be formed at an end portion of the inner rail body 151 in the drawing direction A as shown in FIG.

The buffering means 159 is provided to mitigate the impact that may be generated when the stopper 135 of the inner rail main body 151 and the stopper 135 of the intermediate rail main body 131 come into contact with each other, And may be coupled to the stopper 156 as shown, or may be coupled to the stopper 135, although not shown.

The inner rail main body 151 is provided with a stopper 155 for restricting the movement range of the retainer 141, a fastening portion 157 for fastening the inner rail main body 151 to the storage main body 11 or the drawer 12, A fastening hole 158 may be formed.

In this way, the outer rail main body 111, the intermediate rail main body 131, the intermediate rail main body 131, and the inner rail main body 151 can be coupled to each other such that they can be relatively slidably moved. 120 and the second bearing 140. [0031] As shown in FIG.

When the intermediate rail body 131 slides in the pull-out direction A with respect to the outer rail body 111, a plurality of balls 129 are rotated between the raceway 113 and the outer raceway 134 The retainer 121 is also moved toward the direction in which the intermediate rail body 131 is moved.

The stopper supporting portion 125 and the stopper 115 formed on the retainer 121 come into contact with each other when the intermediate rail body 131 reaches the limit of the movable range with respect to the outer rail body 111, The retainer 121 can no longer be moved and the intermediate rail body 131 is no longer moved in the pulling direction A with respect to the outer rail body 111. [

Likewise, the stopper 135 formed on the intermediate rail body 131 abuts against the stopper supporting portion 146 formed at the end of the retainer 141 in the pull-out direction A, or the stopper 155 formed on the inner rail body 151 The inner rail main body 151 is no longer moved in the pulling direction A with respect to the intermediate rail main body 131 when the stopper supporting portion 145 formed at the end of the retaining direction of the retainer 141 contacts the stopper supporting portion 145.

On the other hand, the operation block 160 may be coupled to the side of the inner rail body 151 in the pull-in direction B. At this time, the operating block 160 is disposed on the surface of the inner rail body 151 facing the intermediate rail body 131.

The actuating block 160 includes an actuating block body 161 and the actuating block body 161 can be provided with a locking groove 162 and a guide surface 163, Explain.

Figures 3 and 4 show the automatic closing means of the slide shown in Figure 1. 3 and Fig. 4 together. 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.

1) of the outer surface of the outer rail (110 in FIG. 1), that is, the outer surface of the opposite side of the surface on which the outer rail 110 is coupled to the storage body (11 in FIG. 1) That is, to the end of the drawing direction B as shown.

The actuating rail 211 and the elastic body fixing portion 215 may be formed on the closing means body 210 as shown in the figure.

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

The rectilinear section 212a is a groove formed in a direction parallel to the drawing direction A or the drawing direction B and the curved section 212b is a groove formed in the direction of the other side of the outer rail 110 of the rectilinear section 212a, (A). Here, the curved portion 212b may have a shape bent in a direction different from the direction parallel to the straight portion 212a, and the direction in which the curved portion 212b is oriented and the direction parallel to the straight portion 212a are substantially perpendicular .

The fastening hole 216 formed in the closure means body 210 and the fastening hole 217 formed at the end of the operation rail 211 are for fixing the closure means body 210 to the outer rail 110, (116 in Fig. 1) formed in the fastening hole (not shown).

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 buffering portion 219 is provided to mitigate the impact generated when the end of the operation rail 211 collides with the intermediate rail 130 in FIG. 1, and may be formed at the end of the operation rail 211 as shown And may be formed at the end of the push rod 233 although not shown.

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 are described in detail in the Published Patent Application No. 10-2008-0089126 filed by the present 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. 5 to 7 show simplified parts of the automatic closing means (200 of FIG. 1) of the slide device for drawers (1 of FIG. 1) according to the first embodiment of the present invention are shown simplified, The bearing (120 in FIG. 2) and the second bearing (140 in FIG. 2) are partially shown in FIG. 6 only and are omitted in all other views. The operation block body 161 is disposed at a position covered by the inner rail main body 151, but is shown by a solid line for convenience of explanation.

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

When the drawer 12 is in the closed state, the intermediate rail main body 131 and the inner rail main body 151 are moved as close as possible to the closing means body 210 as far as possible within a range in which the middle rail main body 131 and the inner rail main body 151 can be moved in the pull- Position. That is, the end portion of the intermediate rail body 131 in the pull-in direction B is disposed at a position in contact with the end portion of the push rod 233 in the pull-out direction A, and the inner rail body 151 is fastened And the other end of the actuating pin 250 is positioned 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 the one end of the actuating pin 250 is inserted into the rectilinear section 212a, the actuating pin 250 is not moved along the longitudinal direction of the pinhole 231. Therefore, when the other end of the operation pin 250 is positioned in the engagement groove 162, the other end of the operation pin 250 is coupled to the engagement groove 162 and is not separated from the operation block body 161.

In this state, when the user moves the drawer 12 in the pull-out direction A to open the drawer 12, the inner rail body 151 coupled to the drawer 12 moves in the pull-out 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 main body 210 and the elastic body 270 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 main body 210. That is, if the force to move the inner rail main body 151 in the pull-out direction A is released, the inner rail main body 151 can be returned to the state shown in FIG.

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 actuating pin 250 is guided by the curved portion 212b. 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 portion of the engaging groove 162 formed in the actuating block body 161, Is released from the engaging groove 162. As shown in Fig.

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 operation pin 250 is separated from the fastening groove 162 so that the intermediate lever body 131 is 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 in which the inner rail main body 151 and the intermediate rail main body 131 are further moved together in the pull-out direction A. In Fig.

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 middle rail body 131 starts to move with the inner rail body 151, even if the intermediate rail body 131 is not pressed by the push rod 233, the intermediate rail body 131 131 are moved together with the inner rail main body 151, that is, in the pull-out direction A.

This is due to the difference in inertia acting on the moving intermediate rail main body 131 and the magnitude of the friction coefficient between the inner rail main body 151, the intermediate rail main body 131 and the outer rail main body 111, 8.

Fig. 8 shows a schematic cross-sectional view of part E shown in Fig.

2) of the first bearing (120 in FIG. 2) is interposed between the flange 112 of the outer rail body 111 and the flange 132 of the intermediate rail body 131, And the ball (149 in FIG. 2) of the second bearing 140 (FIG. 2) is interposed in the flange 132 of the intermediate rail body 131 and the flange 152 of the inner rail body 151.

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

The inner diameter of the ball insertion holes 123 and 143 is generally larger than the outer diameter of the balls 129 and 149. In the process of drawing or pulling out the drawer 12, One of the surfaces of the balls 129 and 149 is generally in contact with a part of the inner circumferential surface of the ball insertion holes 123 and 143 because the inner rail main body 131 and the inner rail main body 151 are relatively slidably moved.

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.

Vm represents the moving speed of the inner rail main body 131 and Vm represents the moving speed of the middle rail main body 131. Since the inner rail main body 151 and the middle rail main body 131 move together, Vi And Vm have the same size.

In this case, not only the load of the drawer 12 itself but also the load of the housings contained in the drawer 12 is applied to the inner rail main body 151 fixed to the drawer 12, And is transmitted to the rail main body 131.

Immediately after the middle rail main body 131 starts to move with the inner rail main body 151, an inertial force acts on the intermediate rail main body 131 and the inner rail main body 151, The inner rail main body 151 and the inner rail main body 151 can be continued to move together until an external force in a direction opposite to the direction in which they are moved to the inner rail main body 151 is applied.

The flange 132 of the intermediate rail main body 131 and the flange 152 of the inner rail main body 151 do not move relative to the inner rail main body 151 and the intermediate rail main body 131, The ball 149 interposed therebetween is not rotated. Therefore, a static frictional force acts on the surface of the unrotated ball 149, and a dynamic frictional force acts on the surface of the rotated ball 129. [

It is well known that the kinetic friction coefficient is always smaller than the static friction coefficient. The coefficient of static friction of the static friction acting on the ball 149 of the second bearing 140 is greater than the dynamic coefficient of friction of the dynamic friction applied to the ball 129 of the first bearing 120, The intermediate rail main body 131 moved by the push rod 233 together with the inner rail main body 151 due to the difference is in a state of being moved together with the inner rail main 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 rail main body 131 is moved together with the inner rail main body 151 to a limit of a range in which the intermediate rail main body 131 can be slid relatively with respect to the outer rail main body 111. Thereafter, And the inner rail main body 151 is slidably moved relative to the intermediate rail main body 131.

Therefore, in the drawer slide device 1 according to the first embodiment of the present invention, when the closed drawer 12 is pulled out, the inner rail main body 151 and the intermediate rail main body 131 are pulled together in the pull- And this state is continued until the movable range of the pulling direction A of the intermediate rail body 131 is reached.

Therefore, the sliding device 1 for a drawer according to the first embodiment of the present invention is configured such that the intermediate rail (130 in FIG. 1) and the inner rail (150 in FIG. 1) are moved together when the drawer 12 is pulled out The load supporting force of the slide 100 can be improved and the drawer 12 can be smoothly pulled out and the slide 100 may be excessively drawn or noisy during the drawing process of the drawer 12 . This is because the slide device 1 for a drawer according to the first embodiment of the present invention is provided with an automatic closing means (not shown), in which a middle rail (not shown) of a general triple slide (not shown) 200 so that the operation of the intermediate rail 130 is regulated.

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.

Fig. 9 shows a state in which the drawer of the drawer slide device according to the second embodiment of the present invention is in a closed state.

9, a cutout portion 139 is formed at one end of the intermediate rail body 131 facing the closing means body 210, that is, at the end of the pulling direction B thereof. The cutout portion 139 is formed in the cutout portion 139 so that when the intermediate rail body 131 is in a state in which the drawer 12 is closed, that is, the intermediate rail body 131 is moved to the maximum position in the pull- (Not shown).

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 operation pin 250 is released from the fastening groove 162. The process of releasing the state in which the operation pin 250 is fastened to the engaging groove 162 is the same as that described with reference to FIG. 6, so that a duplicate description will be omitted.

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.

Therefore, the intermediate rail body 131 is moved in the pull-out direction A together with the inner rail body 151.

Fig. 11 shows a state in which the inner rail main body 151 and the intermediate rail main body 131 of the drawer slide device according to the second embodiment of the present invention are further moved in the pull-out direction A. 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.

The slide device for a drawer according to the second embodiment of the present invention has the same advantages as the drawer slide device (1 in Fig. 1) according to the first embodiment of the present invention described with reference to Fig. 8, The cutout portion 139 is formed to have a length D1 corresponding to the length of the operation rail 211 so that the length of the operation rail 211 is changed as necessary so that the operation of the automatic closing means A range-adjusted effect can be obtained. That is, the range in which the automatic closing can be performed when the drawer 12 is moved in the drawing direction B can be extended or shortened, if necessary.

The sliding device for a drawer according to the second embodiment of the present invention is characterized in that the length of the intermediate rail body 131 is extended by D1 so that the drawer 12 Is also extended by the outer rail main body 111, so that the structural strength of the slide device for a drawer according to the second embodiment of the present invention can be increased.

13 to 15 illustrate an automatic closing device for a drawer slide device according to a third embodiment of the present invention, and FIGS. 13 to 15 illustrate the operation of the slide device for a drawer according to the third embodiment of the present invention. The drawings are 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 has the operation rail 211a (see Fig. 3) as compared with the automatic closing means Except that the fixing groove 218 is formed and the buffer 234 is formed in place of the push rod 233 in FIG. 3, the duplicated description will be omitted.

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

Therefore, when the drawer (12 in Fig. 1) is closed and the intermediate rail body 131 is moved as far as possible in the pull-in direction B, the portion of the middle rail body 131 in the pull- The portion of the operation rail 211a in the drawing direction A can be covered by the intermediate rail body 131 as shown in the figure. That is, the portion of the operation rail 211a in the pull-out direction A can be positioned between the outer rail main body 111 and the intermediate rail main body 131 when the drawer 12 is in the closed state.

In order to minimize the thickness t of the operating rail 211a, the operating rail 211a is provided within a range such that the depth of the guide groove 212 has a depth that can smoothly guide the one end of the operating pin 250. [ So that the thickness t of the substrate W can be minimized.

For reference, although not shown, an insertion hole having a shape corresponding to the operation rail 211a is formed in a portion of the outer rail main body 111 where the operation rail 211a is disposed, and the operation rail The thickness t of the operation rail 211a can be secured by the thickness of the outer rail main body 111. [ That is, by inserting the operation rail 211a into the insertion hole (not shown), the height of the operation rail 211a protruding from the surface of the outer rail body 111 facing the middle rail body 113 is not increased, 0.0 > 211a < / RTI > can be increased by the depth of the insertion hole. Accordingly, the guide groove 212 of the operation rail 211a can have a sufficient depth.

Alternatively, 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 by allowing the operation rail 211a to be inserted into an insertion hole (not shown).

In order to minimize the thickness t of the operation rail 211a, a fixing groove 218 may be formed at the end of the operation rail 211a instead of the fastening hole 216 (see FIG. 3) described with reference to FIG. 3 . A portion of the outer rail main body 111 is cut into the fixing groove 218 and a bending fixed portion (not shown) is inserted to fix the end portion of the operation rail 211a to the outer rail main body 111.

Thus, by forming the thickness t of the operation rail 211a low, the incision part (139 of FIG. 9) is formed in the intermediate | middle rail body 131, or push rod (FIG. The intermediate leg 131 can be in contact with the slider 230 without forming 233 of 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 operation pin 250 is released from the fastening groove 162. The process of releasing the state in which the operation pin 250 is fastened to the engaging groove 162 is the same as that described with reference to FIG. 6, so that a duplicate description will be omitted.

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). The intermediate rail body 131 is pressed in the pulling direction A by the slide 230 and moved in the pulling direction A together with the inner rail body 151. [

15, the inner rail main body 151 and the intermediate rail main body 131 of the slide device for a drawer according to the third embodiment of the present invention are further moved in the pull-out direction A.

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.

The sliding device for a drawer according to the third embodiment of the present invention is not limited to the structure of the drawer for a drawer according to the second embodiment of the present invention, The effect that the operating range of the closing means is extended can be obtained. 9) is not formed in the middle rail main body 131 of the drawer slide apparatus according to the third embodiment of the present invention, so that the strength of the intermediate rail main body 131 does not decrease as much .

13, since the length of the intermediate rail body 131 does not affect the length D2 of the operation rail 211a at all in the drawer slide apparatus according to the third embodiment of the present invention, The length of the operation rail 211a is changed in accordance with the length of the operation rail 211a, and the operation range of the automatic closing means is adjusted. That is, the range in which the automatic closing can be performed when the drawer 12 is moved in the drawing direction B can be extended or shortened, if necessary.

3 and 12) of the automatic closing means (refer to Figs. 3 and 12) provided in the embodiments of the present invention described above are inserted into the guide grooves (212 of Figs. 3 and 12) The structure and manner of operation guided thereby can be varied in various ways. For example, the structure and operation of the actuating pin 250 may be changed as disclosed in Korean Patent Registration Nos. 1056922, 1114477, and 1129569 filed and filed by the present applicant.

While the present invention has been described with respect to the drawer sliding device according to the embodiments of the present invention, the spirit of the present invention is not limited to the embodiments shown in this specification. That is, those skilled in the art of the present invention can readily suggest other embodiments by adding, changing, deleting, adding, or the like to components within the scope of the same concept, but it is also within the scope of the present invention something to do.

10: storage means 11: storage body
12: drawer 100: slide
110: outer rail 130: intermediate rail
150: inner rail 200: automatic closing means
210: closing means body 211: operating rail
230: Slider 250: Operation pin
270: elastomer

Claims (7)

A drawer slide device 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;
A middle rail slidably coupled to the outer rail in a direction parallel to the 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,
And a cut-out portion for receiving the operating rail is formed at one end portion of the intermediate rail facing the closing means body,
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,
An insertion hole having a shape corresponding to the operation rail is formed on a portion of the outer rail where the operation rail is disposed,
And 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 according to claim 6,
The buffering portion
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.

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