KR101056913B1 - Automatic closing device attached to the bottom mounted slide - Google Patents

Abstract

The present invention relates to an automatic closing device used for a bottom mounted slide.

The automatic closing device includes a housing, a moving member, and an elastic spring. A spring coupling part and a moving member position part are formed inside the housing body. A slot in which a lateral portion of the moving member is inserted is inserted at one side of the housing body. Is formed.

According to the present invention, since the movable member is seated on the fuselage of the housing, even when the housing is inclined, the moving member is not detached from the housing, so the handling thereof is convenient.

Undermount Slide, Automatic Closing Device, Elastic Spring, Slot

Description

Self-closing means attached to undermount slide}

1 is a perspective view of a bottom mounted slide with an automatic closing device according to the present invention.

2 and 3 is a front perspective view of the automatic closing device according to the present invention.

4 and 5 are rear perspective views of the automatic closing device shown in FIGS. 2 and 3;

Figure 6 is an exploded perspective view of the automatic closing device according to the present invention.

7 is a perspective view of a housing of the automatic closing device;

8 is a perspective view of a linear motion member of the moving member.

9 is a perspective view of a rotary motion member of the movable member.

10 to 13 is a plan view showing the operating state of the automatic closing device according to the present invention.

The present invention relates to an automatic closing device, in particular an automatic closing device for use in a bottom mounted slide.

An automatic closing device is used to prevent the reopening of the drawer by collision repulsion when the drawer with the slide is attached, and to automatically bring the drawer into the full retracting state even if the user does not inadvertently retract the drawer.

The applicant has applied for a patent for designing various types of automatic closing devices used in the bottom mounted slide (see Patent Application Nos. 2006-0016863, 2006-0022917, 2006-0022919, 2006-0022921) .

The automatic closing devices include a cover-like housing, a moving member consisting of a linear motion member and a rotary motion member, and an elastic spring, and in some cases, a damper is provided to smooth the motion of the moving member.

The moving member of the automatic closing device is mounted inside the housing body so that a part thereof is exposed to one side of the housing body and reciprocates in the longitudinal direction of the body. At this time, the bottom surface of the movable member is positioned to directly contact the bottom surface of the slide.

In the case of the automatic closing devices, the housing body of the automatic closing device is in the form of a cover with an open bottom side, and the movable member is seated inside the moving body and is not fixed to the body to reciprocate. Therefore, once the automatic closing device is installed on the slide, the moving member cannot be released from the automatic closing device, but before installation, if the housing is tilted with the open bottom side of the fuselage downward, the moving member is removed from the housing fuselage and is inconvenient to handle. There is a problem.

It is an object of the present invention to provide an automatic closing device that can be used for a bottom mounted slide that is easy to handle.

In order to achieve the above object, the present invention provides an automatic closing device that is attached to a lower mounting slide including a moving rail having a detachable protrusion formed on one side.

The automatic closing device according to the present invention is composed of a housing, a moving member, and an elastic spring.

The body of the housing is in the form of a hollow box having a top, two sides, and two end faces. Inside the fuselage, the elastic spring is seated, and a spring coupling part in which a first spring binding part is formed, to which one side of the elastic spring is coupled, and a moving member guide groove comprising the linear groove and the circular groove, wherein the movable member is located. And a moving member position portion for reciprocating along the guide groove is formed. In addition, one side of the body is formed with a slot into which the lateral portion of the moving member is inserted.

The moving member is composed of a linear motion member and a rotary motion member.

The linear motion member includes a body portion having a second spring engaging portion coupled to the other side of the elastic spring and a coupling protrusion inserted into the moving member guide groove, a rotating movement member coupling portion having a binding hole, and a rotating movement member coupling portion. It is located at the bottom and has a support plate having a rectangular shape.

The rotary motion member has a shape such as a plate, and one side of the plate has a binding protrusion inserted into the binding hole of the rotary motion member coupling part, and is formed to engage with the rotary motion member coupling part, and the rotary motion space part. A first projection and a second projection formed on the opposite surface and inserted into the movable member guide groove, and the first locking jaw and the second locking jaw formed on one side of the plate and formed on one side of the slide moving rail It has a hook engaging portion to engage with the detachable projection.

The coupling relationship of each of the components is as follows.

First, the binding protrusion of the rotary motion space of the rotary motion member is inserted into the binding hole of the rotary motion member coupling part of the linear motion member to combine the linear motion member and the rotary motion member to complete the moving member.

Next, one side of the elastic spring is attached to the first spring fastening portion of the housing, and the other side is fastened to the second spring binding portion of the linear motion member of the movable member, and the movable member is inserted into the slot in the lateral part thereof and the same of the movable member. The three remaining protrusions formed in the direction are coupled to the movable member guide part of the housing to be inserted into the movable member guide groove.

The force of the elastic spring makes it possible to reciprocate along the moving member guide groove.

In the automatic closing device according to the present invention, since the moving member is seated in the fuselage of the housing, a part thereof is inserted into the slot of the housing so that the moving member is not detached from the housing even when the housing is tilted. It is convenient.

In addition, according to the present invention, the rotary motion member engaging portion of the linear motion member has a straight surface parallel to the longitudinal direction of the support plate, an oblique surface formed to be inclined thereto, and an arc-shaped connection surface connecting these two surfaces, the rotary motion The rotating motion space portion of the member has a first surface and a second surface formed perpendicular to each other, and an arc-shaped connecting surface connecting the two surfaces.

At this time, it is preferable that the angle formed by the straight line and the oblique plane of the rotary motion member coupling portion is 65 °.

In addition, according to the present invention, it is preferable that the sliding projection is formed on the body portion and the support plate in the direction opposite to the side on which the engaging projection of the linear motion member is formed.

In addition, according to the present invention, it is preferable that a position fixing protrusion is formed at one side of the moving member position portion of the housing, and a position fixing groove which is engaged with the position fixing protrusion at one side of the body portion of the linear motion member.

In addition, according to the present invention, the slot formed on one side of the body has a base portion defining the bottom surface of the slot, the thickness of which is preferably equal to the thickness of the support plate of the linear motion member.

In addition, according to the present invention it is preferable that the body inclined surface is formed adjacent to one side of the slot formed on one side of the body.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a perspective view of the bottom-mounted slide 1 of a general configuration to which the automatic closing device 100 according to the present invention is attached.

The lower mounting slide 1 includes a fixed rail 30 having a plurality of raceways 15 and a moving rail 20 sliding on the fixed rail 30, the two rails 30 and 20. A ball retainer (not shown) is positioned between the moving rails 20 so that the moving rail 20 can slide. The lower end of the fixed rail 30 includes a horizontal plate 12 and a vertical plate 11. The slide 1 is secured by means of suitable means, such as screws, to the bottom and / or sidewalls of the desk or the like, and the drawer to the movable rail 20 also suitable as screws. Therefore, when the drawer is pushed or pulled, the drawer is pulled into or pulled out of the desk along the fixing rail 30 by the movable rail 20 fixed to the drawer.

The automatic closing device 100 of the present invention is attached to a suitable position of the horizontal plate 12, one side of the movable rail 20 is formed in the cross section formed to be coupled with the automatic closing device 100 according to the present invention "L Detachable protrusion 25 is provided.

As shown in FIG. 6, the automatic closing device 100 according to the present invention includes a housing 110, a moving member 165, and an elastic spring 170.

The elastic spring 170 used in the present invention has a tapered portion 174 that is formed thinner than the spring fuselage portion near the both ends 172 of the spring. The elastic spring 170 of this type has a spring having both ends in an annular shape. The service life is much longer than that.

2 and 3 are shown in the automatic closing device 100 according to the present invention in the slide state of the slide (elastic spring of the automatic closing device in the water side state) and withdrawal state (elastic spring of the automatic closing device in the tensioned state, respectively) And a front perspective view showing when it is in a state corresponding to FIG. 4 and FIG. 5.

2, 3 and 6, the fuselage of the housing 110 used in the present invention has an upper surface 111, two side surfaces 112 and 112 ', and two end surfaces 113 and 113' and is solid. It has the form of a hollow box.

Appropriate fixing means are formed to fix the housing 110 to the horizontal plate 12 of the slide 1 at a suitable position including both ends of the housing 110. The illustrated embodiment shows that the fixing groove 114 is formed to be fixed by screws or rivets as a fixing means. At this time, it is preferable that a groove 114 'having a space for accommodating the screw or rivet head is formed around the fixing groove 114. When the automatic closing device is installed on the slide, Prevents protruding outwards.

A spring coupling part 130 and a moving member position part 120 are formed inside the housing 110 (see FIG. 7).

The elastic spring 170 is located in the spring coupling portion 130 formed inside the housing 110, the upper surface of the housing 110 so that the elastic spring 170 can be inserted into the spring coupling portion 130. 111 is formed with a spring insertion groove 135 (see Fig. 2). It is preferable for easy insertion of the spring 170 that the size of the spring insertion groove 135 corresponds to at least the size when the elastic spring 170 is in a contracted state.

The spring coupling part 130 is formed with a first spring binding part 137 to which one side of the elastic spring 170 is coupled. The first spring fastening part 137 is composed of a spring end fastening part 138 into which the end 172 of the elastic spring 170 is inserted and a spring taper part fastening part 137 into which the taper part 174 is inserted. The binding portion 137 inserts the end portion 172 and the tapered portion 174 of the elastic spring 170 as shown in FIG. 6 from the upper surface 111 of the housing 110 as shown in FIG. Settle down. The first spring fastening part 138 is the same as the shape of the second spring fastening part 152 of the linear motion member 150 which will be described later (see Fig. 8) and is formed correspondingly.

As shown in FIG. 7, the movable member positioner 120 has the same direction as the first end surface 124, the second end surface 125, the first side surface 126, and the first side surface, or is spaced apart from the first side surface. A surface including a second side 126 ′ positioned, a connecting inclined surface 127 connecting the first side and the second side, and an inner side 118 ′ and a slot 116 of the base portion 118 to be described later. The space portion of the polygon enclosed by (refer to FIG. 6 more clearly). The upper surface of the moving member position portion 120 corresponds to the upper surface 111 of the body of the housing 110, the bottom surface of the moving member position portion 120 is open, as can be seen in Figures 4 and 5 Turning the automatic closing device 100 of the present invention can see the moving member 165.

The first side surface 126, the second end surface 125, and the base inner surface 118 ′ (more precisely, the base inner surface 118 ′ and the slot 116) of the movable member positioner 120 are positioned. The space formed by the surface) is a place where the support plate 161 (see FIG. 8) of the linear motion member 150 to be described later is coupled, and thus the space portion is formed to correspond to the dimensions of the support plate 161.

A positioning protrusion 117 is formed on one side of the moving member position part 120, that is, the first end surface 124 (see FIGS. 3, 4, and 5). The operation of this projection 117 will be described later.

A moving member composed of a straight groove 122 and an arc-shaped groove 123 located on one side of the straight groove 122 on the upper surface 111 of the moving member position part 120, that is, the upper surface 111 of the body of the housing 110. The guide groove 121 is formed. The arc-shaped groove 123 is located on the side of the space to which the above-described support plate 161 is coupled, and is formed to be inclined toward the first side 126 of the moving member position part 120. The guide groove 121 is coupled to the moving member 165 to be described later to reciprocate along it.

One side of the linear groove 122 of the moving member guide groove 121 is formed with a deformable space portion 181 spaced apart from the groove 122 by the elastic deformation protrusion 180 but in communication with each other.

A slot 116 is formed at one side, that is, side 112, of the body of the housing 110. slot

The top surface of 116 is defined by the top surface 111 of the housing 110 and the bottom surface of the slot 116 is defined by the base portion 118. 2 to 6, the lateral portion of the movable member 165 is inserted and positioned in the slot 116, and the movable member 165 is the base 118 in the longitudinal direction of the slot 116. Reciprocate along).

As such, the automatic closing device 100 according to the present invention has a slot on one side of the housing 110.

116 is formed and the moving member 165 is seated in the fuselage of the housing 110, but a portion thereof is inserted into the slot 116 of the housing. Therefore, the movable member 165 is the housing 110

Since it is not separated from the housing 110 even when tilted), it is convenient to handle it even before installation, unlike the conventional case.

The body sloping surface 119 is formed adjacent to the slot 116 in the direction of one side of the slot 116, that is, the end surface 113, and adjacent to the end surface 113. It will be described later.

Hereinafter, the moving member 165 used in the automatic closing device 100 according to the present invention will be described.

The moving member 165 is composed of a linear motion member 150 and the rotary motion member 140.

The linear movement member 150 of the moving member 165, as shown in Figure 8, is composed of a body portion 151, the rotary movement member coupling portion 162, and the support plate 161.

On one side of the body portion 151 of the linear motion member 150, the engaging projection 160 and the second spring binding portion 152 is formed. The coupling protrusion 160 has a cylindrical shape and is inserted into the moving member guide groove 121 of the moving member position portion 120 of the housing 110 to reciprocate. The second spring fastening part 152 is a spring end fastening part into which an end 172 of the elastic spring 170 is inserted so that the elastic spring 170 can be fastened to a portion to which the other side of the elastic spring 170 is coupled ( 154 and the tapered portion 174 is inserted into the spring tapered portion binding portion 153 is inserted.

On the other side of the body portion 151, that is, the body portion inclined surface 156 is formed with a position fixing groove 157 that meshes with the position fixing protrusion 117 of the moving member position portion 120 of the housing 110, Subsequent to the inclined surface 156, a body portion side projection 159 is formed. The groove 157 is sufficient to be formed to have a size into which the position fixing protrusion 117 can be inserted, so it is not necessary to be formed over the entire width direction of the inclined surface 156 (see Fig. 5). Therefore, this groove 157 is not shown in FIG. 8, which shows a front perspective view of the linear motion member 150, but is shown in FIG. 6 where the back surface of the linear motion member 150 is visible.

The position fixing groove 157 and the position fixing protrusion 117, more specifically, when the linear movement member 150 reciprocates in the movable member position portion 120 of the housing 110 than the movable member 165. When the linear movement member 150 comes to the contracted position by the spring 170, the linear movement member 150 serves to position the linear movement member 150 in the correct position (see FIGS. 4 and 5).

The rotary motion member coupling part 162 of the linear motion member 150 is a straight surface 168 formed in parallel to the longitudinal direction of the support plate 161 as a portion to which the rotary motion member 140 to be described later is coupled, and is formed to be inclined thereto. It consists of an oblique surface 167 (this surface 167 is extended to the body portion 151 to form an extension surface 158), and a connecting surface 169 connecting these two surfaces 168 and 167. The connection surface 169 has a smooth curved surface having an arc shape. The binding hole 163 is formed inside the rotational member coupling portion 162.

The support plate 161 of the linear motion member 150 is located below the rotary motion member coupling portion 162 and has a generally rectangular shape. The support plate 161 serves to support the rotary motion member 140 when the rotary motion member 140 is coupled with the linear motion member 150, and the slide 1 of the slide member 165 during the reciprocating motion of the movable member 165. Directly in contact with the horizontal plate member 12 serves to slide on the horizontal plate member 12.

As described above, when the lateral portion of the movable member 165 is inserted into the slot 116 and is positioned, the support plate 161 is not inserted into the slot 116 and the side protrusion 159 of the body portion 151 is provided. Only is inserted into slot 116. Therefore, when the movable member 165 reciprocates along the base portion 118 in the longitudinal direction of the slot 116, as shown in Figures 2 to 5, the body portion side projections of the linear movement member 150 Only a part of the direction of the hook engaging portion 141 (see FIG. 9) of the 159 and the rotary motion member 140 is reciprocated on the base portion 118. At this time, the thickness T '(see Fig. 8) of the support plate 161 is the base portion 118 thickness T (Fig. 8) so that the movable member 165 can perform a smooth movement along the base portion 118. 2).

Sliding protrusions 155 and 155 'are formed on the surface of the body 151 and the support plate 161 in direct contact with the horizontal plate 12 of the slide 1 for sliding movement (see FIG. 6). ') Serves to reduce the contact area as much as possible in order to minimize frictional resistance when the member slides on the horizontal plate 12.

The rotary member 140 of the movable member 165 is a plate-shaped member having a substantially pentagonal shape, as shown in FIG.

One hook portion of the rotary motion member 140 is formed with a hook locking portion 141 consisting of a first locking jaw 142 and a second locking jaw 143. The hook locking portion 141 is a slide (1) Is coupled to the detachable protrusion 25 formed on one side of the moving rail 20 when moving to the retracted position. In addition, the rotating member 140 of the movable member 165 has a first locking step 142 and An inclined surface 149 is formed adjacent thereto and connected thereto.

The first protrusion 144 and the second protrusion 147 are formed on one surface of the plate-like surface of the rotary motion member 140. These protrusions 144 and 147 are cylindrically shaped like the coupling protrusion 160 of the linear motion member 150. And it is inserted into the moving member guide groove 132 of the moving member position portion 120 of the housing 110 to reciprocate accordingly.

On the other surface of the plate of the rotary motion member 140, a rotary motion space portion 145 is formed (see Fig. 6). The boundary of the rotary motion space portion 145 is formed with a first surface 148 perpendicular to each other; Second surface 148 'and connecting surface 148 " connecting these two surfaces 148 and 148'. The connection surface 148 ″ is formed to have a concave-convex relationship with each other on the connection surface 169 of the rotary motion member coupling portion 162 of the linear motion member 150 as a smooth curved surface having an arc shape. In addition, a binding protrusion 146 is formed in the rotary motion space 145 to be inserted into the binding hole 163 of the rotary motion member coupling part 162 of the linear motion member 150.

Hereinafter, the coupling relationship between the components will be described with reference to FIG. 6.

First, the moving member 165 is completed by inserting the binding protrusion 146 of the rotary motion member 140 into the binding hole 163 formed in the rotary motion member coupling portion 162 of the linear motion member 150. When the two members 150 and 140 are coupled, the respective connecting surfaces 169 and 148 ″ of the rotary motion member coupling part 162 and the rotary motion space part 145 are positioned to face each other.

Since the rotary motion member 140 is formed around the binding protrusion 146 of the rotary motion member 140, the rotary motion member coupling part 162 of the linear motion member 150 is rotatable. 140 may perform a smooth rotational movement while being coupled to the linear motion member 150. The first surface 148 and the second surface 148 ′ of the rotary motion space 145 rotate until they meet the straight surface 168 and the oblique surface 167 of the rotary motion member coupling part 162, respectively. , The maximum rotation angle α (see FIG. 11) is determined by the angle formed by the straight surface 168 and the oblique surface 167 of the rotation member engaging portion 162. Meanwhile, the actual rotation angle is determined by what angle the arcuate groove 123 of the guide groove 121 is to be formed with respect to the straight groove 122. In this embodiment, the actual rotation angle is designed to be 25 °. Therefore, the angle formed by the straight surface 168 and the oblique surface 167 of the rotary member 162 is set to 65 °.

The moving member 165 is a coupling protrusion 160 of the linear motion member 150, the first protrusion 144 and the second protrusion 147 of the rotary motion member 140 is a moving member position portion 120 of the housing body It is inserted into the moving member guide groove 121 of and coupled to the moving member position portion 120 so that the lateral portion of the moving member 165 is inserted into the slot 116 at the same time (see Figs. 2 and 3). The moving member 165 reciprocates along the guide groove 132.

One side of the elastic spring 170 is fastened to the first spring fastener 137 of the housing 110 and the other side is fastened to the second spring fastener 152 of the linear motion member 150 of the movable member 165. In this way, the automatic closing device 100 of the present invention is completed, and the device 100 is secured to the slide 1 by fixing the housing 110 to a designated position of the horizontal plate 12 of the slide 1 with a suitable fixing means. Will be installed.

Hereinafter, the operation relationship of the automatic closing device 100 according to the present invention will be described with reference to FIGS. 10 to 13. FIG. 10 to FIG. 13 are understood as a plan view of the automatic closing device 100 in which the housing 110 is omitted. The linear motion member 150 and the rotary motion member 140 are shown as solid lines for the convenience of the guide body of the housing body 120 in which the linear motion member 150 and the rotary motion member 140 reciprocate. Only the (121) -circular groove 123, the straight groove 121, and the deformation space portion 181 are indicated by dotted lines.

When the drawer is retracted, the moving rail 20 of the slide 1 moves in the direction of the arrow, and at this time, the hook catching portion 141 of the rotary motion member 140 of the automatic closing device 100 is detachable of the moving rail 20. In the open position toward the protrusion 25 (Fig. 10). The second protrusion 147 of the rotary motion member 140 is located in the linear groove 122 of the guide groove 121, the rotary motion member 140 The first protrusion 144 of) is caught in the arc-shaped groove 123 of the guide groove 121.

Detachable protrusion 25 is coupled to the second locking jaw 143 of the hook engaging portion 141 when the moving rail 20 is continuously drawn in (Fig. 11), and then rotates the rotary member 140 in a clockwise direction. (Fig. 12). The rotation angle α is 25 ° as described above. In this rotation, the first protrusion 144 of the rotary motion member 140 is separated from the hooked groove 123 of the guide groove 121 and is positioned in the straight groove 122 of the guide groove 121. Done.

Since the elastic spring 170 is attached to the side of the linear motion member 150 connected to the rotary motion member 140 in an extended state, the movable member 165-that is, the linear motion by the force of the elastic spring 170. The member 150 and the rotational movement member 140 are moved to the fully retracted position. At this time, the detachable protrusion 25 of the movable rail 20 is caught by the first locking step 142, and thus the drawer is automatically moved. It is moved to the fully retracted position with (Fig. 13).

The withdrawal of the drawer takes place in the reverse order of the above process. When the drawer is withdrawn in the fully retracted position (Fig. 13), the detachable protrusion 25 of the movable rail 20 pulls the first locking jaw 142 and this time the elastic spring 170 E) and move to the withdrawal position (FIG. 12). Withdrawal of the drawer continuously causes the detachable protrusion 25 to push the first locking jaw 142 to rotate the rotary motion member 140 counterclockwise. The first protrusion 144 of the rotary motion member 140 is caught by the arc-shaped groove 123 of the guide groove 132 (Fig. 11), and then the detachable protrusion 25 of the movable rail 20 is hook hooked. The first locking jaw 142 of 141 continues to move to the withdrawal position (FIG. 10). At this time, since the first protrusion 144 is caught in the arc-shaped groove 123 of the guide groove 121, it is separated. It becomes impossible to do so, and the elastic spring 170 is in an extended state to prepare for the next inlet.

As described above, the inclined surface 149 is formed adjacent to and connected to the first locking jaw 142, and the inclined surface 119 is adjacent to one side of the slot 116 in the housing 110. ) Is formed, so that the resistance is minimized even if the detachable protrusion 25 of the moving rail 20 meets them when entering the inlet direction.

On the other hand, the deformable space portion 181 is that the automatic closing device of the slide does not operate normally, that is, the drawer is in the withdrawn position, but the moving member 165 is located in the retracted state (state of Fig. 13; see Fig. 2) In this case, the automatic closing device serves to return to the normal operating state again, and for details, refer to the above-described prior application of the applicant.

According to the present invention, the lower mounting slide, that is, the drawer can be automatically moved to the fully retracted position, and the moving member is seated on the fuselage of the housing, but the handling is convenient because it does not detach from the housing even if the housing is tilted.

Claims (8)

In the automatic closing device that is attached to the lower mounting slide (1) including a moving rail 20, the detachable protrusion 25 is formed on one side, An elastic spring having an automatic closing device having a taper portion 174 that is formed thinner than a spring fuselage portion near the housing 110, the moving member 165, and both ends 172 of the spring. Consisting of 170, The body of the housing 110 is in the form of a hollow box having an upper surface 111, two side surfaces 112 and 112 ′, and two end surfaces 113 and 113 ′, An elastic spring 170 is mounted inside the fuselage, and a spring coupling part 130 in which a first spring binding part 137 is formed to which one side of the elastic spring 170 is coupled, and the moving member 165 are positioned. And a moving member guide groove 121 formed of a straight groove 122 and an arc-shaped groove 123 is formed so that the moving member 165 reciprocates along the guide groove 121. 120 is formed, the side 112 of the body is formed with a slot 116 is inserted into the lateral portion of the moving member 165, The moving member 165 is composed of a linear motion member 150 and a rotary motion member 140, The linear movement member 150 has a body portion having a second spring binding portion 152 coupled to the other side of the elastic spring 170 and a coupling protrusion 160 inserted into the movable member guide groove 121 ( 151, a rotary motion member coupling part 162 having a binding hole 163, and a support plate 161 having a rectangular shape and positioned below the rotary motion member coupling part 162. The rotary motion member 140 has a shape such as a plate, and one surface of the plate has a binding protrusion 146 inserted into the binding hole 163 of the rotary motion member coupling part 162 and the rotary motion member coupling part ( Rotational motion space 145 is formed to engage with, 162, the rotational motion space The first projection 144 and the second projection 147 formed on the surface opposite to the 145 and inserted into the moving member guide groove 121, and the first locking jaw 142 formed on one side of the plate. And a second hooking jaw 143 and a hook hooking portion 141 coupled to the detachable protrusion 125 formed on one side of the slide moving rail 20, One side of the elastic spring 170 is fastened to the first spring fastening part 137 of the housing 110, and the other side is fastened to the second spring fastening part 152 of the linear motion member 150 of the moving member 165. The moving member 165 has a lateral portion thereof inserted into the slot 116 and each protrusion 160, 144, 147 are attached to the lower mounting slide, which is coupled to the movable member guide portion 120 of the housing 110 to be inserted into the movable member guide groove 121 to reciprocate along the movable member guide groove 121. Automatic closing device. According to claim 1, wherein the rotation member engaging portion 162 of the linear member 150 is a straight surface 168 parallel to the longitudinal direction of the support plate 161, oblique surface 167 formed to be inclined thereto, and Arc-shaped connecting surface 169 connecting these two surfaces 168 and 167, An arc-shaped connection connecting the first surface 148 and the second surface 148 ', and the two surfaces 148 and 148', in which the rotary motion spaces 145 of the rotary motion member 140 are formed perpendicular to each other. if An automatic closing device attached to the undermount slide, characterized in that it has a (148 ''). According to claim 2, wherein the straight surface 168 and the oblique surface of the rotary member engaging portion 162 Automatic closing device attached to the lower mounting slide, characterized in that the angle formed by (167) 65 °. The method of claim 1, wherein the sliding projections (155 ', 155) are formed on the body portion 151 and the support plate 161 in a direction opposite to the side on which the engaging projection 160 of the linear motion member 150 is formed. Automatic closing device attached to the lower mounting slide characterized in that. The position fixing protrusion 117 is formed at one side of the moving member position part 120 of the housing 110, and the position fixing part is formed at one side of the body part 151 of the linear motion member 150. Automatic closing device is attached to the lower mounting slide, characterized in that the position fixing groove 157 is engaged with the projection 117 is formed. According to claim 1, Slot 116 formed on one side 112 of the body has a base portion 118 that defines the bottom of the slot 116, the thickness T of the base portion 118 is Automatic closing device attached to the lower mounting slide, characterized in that the same as the support plate (161) thickness (T ') of the linear motion member 150. The apparatus of claim 1, wherein the fuselage inclined surface (119) is formed adjacent to one side of the slot (116) formed on one side (112) of the fuselage. The lower mounting slide of claim 1, wherein a spring insertion groove 135 is formed on the upper surface 111 of the housing 110 to allow the elastic spring 170 to be inserted into the body of the housing 110. Automatic closing device attached to.

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