KR20070096813A - Self-closing means - Google Patents

Abstract

An automatic closing device is provided to allow the proper usage for a lower mounted slide of a drawer and to achieve the smooth and automatic closing of the slide when the slide is automatically closed. An automatic closing device is attached to a lower mounted slide comprising a movable rail which has a detachable lug in its one side, and includes: a housing(110), formed in a hollowed box shape, and having a first spring hook and a movable-member positioning part; a movable member(165), arranged inside the housing, and having a straight motion member and a rotary motion member; a damper, having a cylinder with a front lug and a piston rod which is projected from a one side of the cylinder and has a relatively long length and arranged inside the housing; and an elastic spring(170), attached to a lateral side of the housing and having a tapered portion which is tapered from a center to both ends of the elastic spring itself.

Description

Self-closing means

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

2 and 3 are front perspective views of the automatic closing device according to the present invention, respectively, with the elastic spring tensioned and retracted.

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

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 according to the present invention.

Figure 8 is a perspective view showing another embodiment of the housing of the automatic closing device.

9 is a perspective view of the linear motion member of the moving member used in the present invention.

Figure 10 is a perspective view of a rotary motion member of the moving member used in the present invention.

11 to 14 are plan views showing an operating state of the automatic closing device according to the present invention.

15 is a perspective view showing a malfunction state of the automatic closing device according to the present invention.

The present invention relates to an automatic closing device with a damper for use in a slide for mounting the bottom.

The slide is largely divided into a side mounted slide installed at the side of the drawer and a bottom mounted slide installed at the bottom of the drawer.

Conventionally, even when a drawer with a slide is pulled in with only a slight amount of force, the drawer is reopened due to a collision repulsive force, or a part of the drawer is left open when the drawer is not inadvertently completely drawn in by a user. There is this.

In order to alleviate this inconvenience, an automatic closing device for automatically closing the slide is described in US Pat. No. 6,733,097. The automatic closure device described herein consists of a hollow box-shaped housing, an actuator mounted within the housing, an elastic spring and a guide pin through the actuator and the elastic spring. The housing consists of a slot portion consisting of a straight portion and a curved portion, and an actuator is attached to the slot portion and moves along the slot portion.

However, the automatic closing device described in the US patent relates to an automatic closing device used for side mounted slides and is not an automatic closing device that can be used for a bottom mounted slide.

It is an object of the present invention to provide an automatic closing device.

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

Still another object of the present invention is to provide an automatic closing device in which smooth automatic closing is performed when the slide is automatically closed.

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 entirely of a housing, a moving member and an elastic spring.

The elastic spring has a tapered portion formed thinner than the spring body portion near the end of the spring. This type of spring is more durable than the spring end is annular.

The body of the housing is in the form of a hollow box having a top, two sides and two end faces. A moving member position is formed inside the housing body, and a first spring fastening portion is formed at the side of the housing body to which one side of the elastic spring is coupled. The moving member is attached to the movable member position portion, thereby reciprocating the movable member. The addition is formed.

The moving member is composed of a linear motion member and a rotary motion member. The linear motion member is composed of a rotary motion member coupling portion and a body portion having a binding hole, the second spring binding portion is formed on one surface of the body portion is coupled to the other side of the elastic spring. The rotary motion member has a rotary motion space portion having a binding protrusion inserted into a binding hole of the rotary motion member coupling portion and a hook engaging portion coupled to a detachable protrusion formed on one side of the slide moving rail. The binding protrusion of the rotary motion member is inserted into the binding hole of the rotary motion member coupling portion of the linear motion member to be coupled to the linear motion member to form a moving member.

The coupling between the components is as follows.

First, one side of the elastic spring is coupled 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 coupled to the movable member binder of the movable member position in the housing body. By doing so, the automatic closing device according to the present invention is completed. The moving member of the automatic closing device reciprocates in the moving member position in the housing body by the input force of the slide and the contracting force of the elastic spring.

According to the present invention, the movable member position portion is a space portion including a first end face, a second end face facing it, a first side face, a second side face facing it, and a ceiling face (ie, an inner face of the upper surface of the housing). . A movable member binding portion is formed on the ceiling surface, and the second side is open and the movable member is positioned such that a lateral portion of the movable member protrudes through the opened side.

According to the invention, the moving member binding portion is a moving member guide groove consisting of a straight groove and an arc-shaped groove.

According to the present invention, an elastic deformation portion is formed on one side of the linear groove of the guide groove, and the elastic deformation portion includes a first deformation space and a second deformation space formed on both sides of the elastic deformation protrusion and the elastic deformation protrusion. In this case, the first and second deformation spaces are formed in the shape of grooves penetrating the upper surface of the housing. The elastic deformation portion serves to facilitate the return to the normal operating state immediately even when the automatic closing device is in an abnormal operating state.

It is preferable that the elastic deformation protrusion forms part of the side surface of the straight groove.

According to the present invention, the linear motion member and the rotary motion member has a coupling means for engaging with the moving member binding portion of the moving member position. The coupling means is preferably a cylindrical engaging projection formed on the linear motion member and a cylindrical first projection and a second projection formed on the rotary motion member.

According to the present invention, the hook locking portion is composed of a first locking jaw and a second locking jaw.

It is preferable that a damper is attached to the automatic closing device to absorb a part of the contracting force when the moving member moves by the contracting force of the elastic spring. To this end, in the automatic closing device according to the present invention, a damper seat is formed inside the housing body, and a damper having a conventional configuration is located therein.

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

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 movable rails 20 so that the movable rail 20 can slide. The lower end of the fixed rail 30 includes a horizontal fixing member 12 and a vertical fixing member 11 which includes a vertical plate 11. 10. The slide 1 is secured by means of suitable means, such as screws, on the bottom and / or side walls of the desk, etc., and the drawer is also suitable means, such as screws, on the movable rail 20. Therefore, when the drawer is pushed or pulled, the drawer is pulled into or pulled out of the desk along the fixed 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.

The automatic closing device 100 according to the present invention basically comprises a housing, an elastic spring attached to the side of the housing, and a moving member attached to the inside of the housing, and when the movable member moves by the contracting force of the elastic spring, An automatic closing device in which a damper is attached therein to absorb a portion corresponds to one of the preferred embodiments of the automatic closing device having the above basic configuration. Hereinafter, an automatic closing device in which a damper is attached will be described. The same applies to the automatic closing device of the basic configuration without the damper except for the damper.

As shown in Figure 6, the damper is attached to the automatic closing device 100 of the preferred embodiment according to the present invention, the housing 110, the elastic spring 170 attached to the side of the housing 110

, The moving member 165 and the damper 190 are attached to the inside of the housing 110.

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.

The damper 190 is a damper having a general configuration including a cylinder 192 having a front protrusion 194 and a piston rod 195 that protrudes from one side of the cylinder 192 and has a relatively long length. Any suitable damper may be used.

2 and 3 show that the automatic closing device 100 is in the withdrawal state of the slide (the elastic spring of the automatic closing device is in the tensioned state) and the retracted state (the elastic spring of the automatic closing device is in the water-side state), respectively. 4 and 5 are rear perspective views of the automatic closing device corresponding to the states of FIGS. 2 and 3.

2, 4 and 7, the housing 110 fuselage has an upper surface 111, two side surfaces 112 and 112 ', and two end surfaces 113 and 113', the inside of which is a hollow box. Take form.

Proper fixing means are formed at both ends of the housing 110 to fix the housing 110 to the horizontal plate 12 of the slide 1. In the embodiment illustrated in FIG. And a fixing protrusion 118 (see a partially enlarged view of FIG. 2). A fixing hook (not shown) having a coupling portion that protrudes through the fixing groove 114 and receives the fixing protrusion 118. ) Is positioned at an appropriate position of the horizontal plate 12 (a position to which the automatic closing device is to be attached), and the fixing protrusion 118 is fastened to the engaging portion of the fixing hook so that the housing 110 is horizontal to the slide 1. It can also be fixed to the plate 12. In addition to the fixing means, in the illustrated embodiment, the housing 110 is elongated to prevent the middle part from being lifted during operation, as shown in the enlarged partial view of FIG. (110) Central fixing groove (116) in the center of the fuselage And a fixing protrusion 117 having the same shape as the fixing protrusion 118 may be formed therein. However, such a central fixing groove 116 and the fixing protrusion 117 are optional. It may not.

In addition, the protrusion 115 is fitted into a fixing groove (not shown) formed in a proper position of the horizontal plate 12 of the slide 1 in advance in order to facilitate attachment in place when the automatic closing device 100 is installed. (See Fig. 7) may be formed.

Fig. 8 shows another embodiment of the housing 110 of the automatic closing device, where the automatic closing device has a fixing hole 119 so that the automatic closing device can be fixed by screws or rivets. Preferably, a groove 119 'is formed having a space for the head to be accommodated. This prevents the automatic closure device from being positioned away from the bottom of the slide due to screws or rivet heads when the automatic closure device is installed on the slide. .

 As shown in FIG. 7, a moving member position part 120 and a damper seating part 120 ′ are provided inside the body of the housing 110.

The damper seating portion 120 ′ is provided with a damper cylinder insertion groove 121, a damper front protrusion insertion groove 122, and a damper piston rod insertion groove 123 so that the damper 190 (see FIG. 6) can be positioned. It is composed.

As described above, the preferred embodiment of the present invention describes an automatic closing device to which the damper 190 is attached, but the damper 190 is not attached to the automatic closing device of the basic configuration. Therefore, in the automatic closing device having a basic configuration, the damper seating portion 120 ′ is not formed inside the housing 110. In this case, the automatic closing device is shortened as much as the damper seating portion 120 '(in this case, the length of the elastic spring is shortened, which causes a disadvantage that the automatic input of the automatic closing device is reduced). The body portion corresponding to the damper seating portion 120 ′ while maintaining the same length as that shown in the figure may have only a suitable groove or may have a block shape to reduce material costs.

The moving member position portion 120 includes a first end surface 124, a second end surface 125 facing the first side surface, a first side surface 126, a second side surface 136 facing the ceiling surface 127 ( The rear surface is a rectangular shaped space portion that substantially includes the inner surface of the upper surface 111 of the housing body, and the second side surface 136 is open and exists only virtually. Thus, referring to FIGS. 2 and 3 where this second side 136 is shown, the second side 136 looks like a side groove. The second side 136 is positioned such that the lateral portion of the moving member 165 protrudes.

The moving member binding unit is formed on the ceiling surface 127 of the moving member position unit 120. In the illustrated preferred embodiment, the moving member engagement portion has a guide groove 132 formed of a straight groove 133 and an arc-shaped groove 134 located on one side of the straight groove 133. The arc-shaped groove 134 is positioned in the direction of the second end surface 125 of the moving member position part 120 and is formed to be inclined toward the first side surface 126 at the same time. The guide groove 132 is coupled to the moving member 165 to be described later to reciprocate along it.

The elastic deformation portion 128 is formed on the ceiling surface 127 of the moving member position portion 120 adjacent to the straight groove 133 of the guide groove 132. The elastic deformation portion 128 has an elongated shape. The elastic deformation protrusion 129 and the first deformation space 130 and the second deformation space 131 formed on both sides of the elastic deformation protrusion 129. The guide groove 132 is formed on the ceiling surface 127. Although it is formed, it has a groove shape that does not penetrate through the ceiling surface 127 (substantially the inner surface of the upper surface 111 of the housing body), but the first deformation space 130 and the second deformation space 131 are formed in the housing ( 110 is a groove formed through the upper surface 111 of the body. Therefore, referring to FIGS. 2 and 3, in the front perspective view of the automatic closing device, the movable member position part 120 and the guide groove 132 formed therein are not visible, but the elastic deformation part 128 is visible. As shown in FIG. 7, the elastic deformation protrusion 129 is preferably positioned to align in the direction of the straight groove 133 to form a part of the side surface of the straight groove 133. As shown in FIG.

The elastic deformation part 128 serves to easily return to the normal operation state again when the automatic closing device 100 malfunctions, and more details thereof will be described later.

On one side of the housing 110, that is, on one side of the side 112, a first spring engagement portion 137 is formed to which one side of the elastic spring 170 is coupled (see FIG. 2). Is composed of a spring end binding portion 138 into which the end 172 of the elastic spring 170 is inserted and a spring taper portion binding portion 139 into which the tapered portion 174 is inserted, and the shape thereof is a linear motion member 150. The same as the shape of the spring end engagement portion 154 and the spring tapered portion engagement portion 153 of the second spring engagement portion 152 of FIG. 9) is also formed correspondingly.

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 movement member 150 and the rotary movement member 140 as described above.

The linear motion member 150 of the moving member 165, as shown in Figure 9, is composed of a body portion 151 and the rotary motion member coupling portion 162.

On one side of the body portion 151 of the linear motion member 150, the second spring binding portion 152 and the piston rod insertion groove 156 is formed.

The second spring binding portion 152 is a portion to which the other side of the elastic spring 170 is coupled, and a spring end binding portion into which the end 172 of the elastic spring 170 is inserted so that the end of the elastic spring 170 can be engaged. It consists of a spring tapered portion binding portion 153 into which the portion 154 and the tapered portion 174 is inserted.

The piston rod insertion groove 156 coupled with the piston rod 195 of the damper 190 is formed in a direction parallel to the second spring engagement portion 152. The piston rod insertion groove 156 is formed of a semi-circular cylinder corresponding to the piston rod 195 shape, but may have any shape in which the piston rod 195 can be inserted. In the automatic closing device of the basic configuration in which the damper 190 is not attached, the piston rod insertion groove 156 is not formed.

The other side of the body portion 151, that is, the side opposite to the side where the second spring engagement portion 152 is formed, is directly in contact with the horizontal plate member 12 of the slide 1 during the reciprocating movement of the movable member 165. The plate 12 is slid. In the body portion 151 in direct frictional contact with the horizontal plate member 12, as shown in Figs. 4 to 6, a sliding protrusion 155 is formed. The sliding protrusion 155 serves to reduce the contact area as much as possible in order to minimize frictional resistance during sliding.

The rotary motion member coupling part 162 of the linear motion member 150 is a portion to which the rotary motion member 140 to be described later is coupled. The rotary motion member coupling portion 162 includes a straight surface 168, an oblique surface 167 formed to be inclined thereto, and a connection surface 169 connecting these two surfaces 168 and 167. The connection surface 169 has a smooth curved surface having an arc shape. A binding hole 163 is formed inside the rotation member coupling portion 162.

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

On one side of the rotary motion member 140, a hook engaging portion 141 is formed to engage with the detachable protrusion 125 formed on one side of the moving rail 20 when the slide 1 moves to the retracted position. . The hook locking portion 141 is composed of a first locking jaw 142 and a second locking jaw 143 as shown.

In addition, the inclined surface 149 adjacent to the first locking jaw 142 and connected thereto is formed at the rotational movement member 140 of the movable member 165. The role of this inclined surface is mentioned later.

The rotary motion space 145 is formed on one surface of the plate of the rotary motion member 140 (see FIG. 6). The boundary of the rotary motion space 145 is formed on the first surface 148 and the first surface 148 perpendicular to each other. Two surfaces 148 'and connecting surfaces 148 " connecting these two surfaces 148 and 148'. The connection surface 148 ″ is a smooth curved surface having an arc shape, and 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. In the rotary motion space 145, a binding protrusion 146 is inserted into the binding hole 163 of the rotary motion member coupling part 162 of the linear motion member 150.

The above-described linear motion member 150 and the rotary motion member 140 has a means for coupling to the moving member binding portion formed on the ceiling surface 127 of the moving member position portion 120, that is, the moving member guide groove 132. Have The coupling means is inserted into the moving member guide groove 132 has a form of a projection that can reciprocate along it. That is, as shown in Figure 9 and 10, the linear movement member 150 is formed with a cylindrical coupling protrusion 160 is formed on the surface on which the second elastic spring binding portion 152 of the body portion 151 is formed; In addition, the first and second protrusions 144 and 147 having a cylindrical shape are formed on the opposite surface of the rotary movement member 140 on which the rotary movement space 145 is formed.

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 rotary motion member 140 has a first surface 148 and a second surface 148 ′ of the rotary motion space 145, respectively, with a straight surface 168 and an oblique surface 167 of the rotary motion member coupling part 162. ) And the maximum rotation angle α (see FIGS. 5 and 12) is determined by the angle formed by the straight surface 168 and the oblique surface 167 of the rotating member engaging portion 162. Is determined. Meanwhile, the actual rotation angle is determined by the angle at which the arc-shaped groove 134 of the guide groove 132 is to be formed with respect to the straight groove 133. In this embodiment, the actual rotation angle is designed to be 25 °, and therefore, the angle formed by the straight surface 168 and the oblique surface 167 of the rotary motion member coupling portion 162 is 65 °.

The moving member 165 includes a coupling protrusion 160 of the linear motion member 150, a first protrusion 144 and a second protrusion 147 of the rotary motion member 140, and the movable member position part 120 of the housing body part. It is coupled to the moving member position portion 120 of the housing 110 to be inserted into the guide groove 132 formed on the ceiling surface 127 of the. At this time, the first contact surface 158 and the second contact surface 159 (see FIG. 9) of the linear motion member 150 are in contact with the ceiling surface 127 and the first side surface 126 of the movable member guide portion, respectively. The moving member 165 reciprocates along the guide groove 132. When the drawer is in the maximum retracted position, that is, when the slide is in the maximum retracted position, the moving member 165 of the linear movement member 150 of the moving member 165 is moved. When the end surface 157 is in contact with the first end surface 124 of the movable member guide portion, and the drawer is pulled out, the rotary motion member 140 of the movable member 165 moves to the second end surface 125 of the movable member guide portion. ) And the first side 126.

In the case of the automatic closing device to which the damper 900 is attached, the damper 900 is inserted into the damper seating portion 120 ′ inside the body of the housing 110.

Finally, the elastic spring 170 has one side of the first spring binding portion 137 of the housing 110 and the other side of the elastic spring 170 of the linear movement member 150 of the movable member 165. By binding to the automatic closing device 100 of the present invention is completed.

The automatic closing device 100 coupled as described above is such that the device 100 is installed on the slide 1 by fixing the housing 110 to a designated position of the horizontal plate 12 of the slide 1 by a suitable fixing means. .

Hereinafter, an operation relationship of the automatic closing device 100 according to the present invention will be described using FIGS. 11 to 15. 11 to 15 are plan views of the automatic closing device 100 in which the housing 110 is omitted, and the damper 190, the linear movement member 150, and the rotary movement member 140 are shown in solid lines for the convenience of understanding. Guide groove 132-arc-shaped groove 134 and the linear groove 133-part and elastic deformation of the moving member position portion 120 to which the linear motion member 150 and the rotary motion member 140 reciprocate Only the part 128 (the reference number of the elastic deformation part is shown in FIG. 15 only) is indicated by a dotted line.

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 projection 25 (Fig. 11). The second projection 147 of the rotary motion member 140 is located in the straight groove 133 of the guide groove 132, the rotary motion member 140 The first protrusion 144 of) is caught in the arc-shaped groove 134 of the guide groove 132.

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. 12), and then rotates the rotary member 140 in a clockwise direction. (Fig. 13). At this time, the rotation angle is 25 ° as described above (see Fig. 12).

By this rotation, the first protrusion 144 of the rotary motion member 140 is separated from the state of being caught in the arc-shaped groove 134 of the guide groove 132 and is located in the straight groove 133 of the guide groove 132. Done. Since the elastic spring 700 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-the linear motion member by the force of the elastic spring 700. 150 and the rotary motion member 140 is moved to the full retracted position. At this time, the detachable protrusion 25 of the moving rail 20 is caught by the first locking step 142 (FIG. 14).

When the damper 190 is attached to the automatic closing device, the piston rod 195 of the damper 190 is inserted into the piston rod insertion groove 156 formed in the linear motion member 150 during the movement to the full retracted position, and the damper is inserted. 190 applies a damping force to the moving member 165. Therefore, the drawer is automatically moved to the full retracted position smoothly despite the large contracting force of the elastic spring 170 by the shock absorbing effect of the damper 190.

The withdrawal of the drawer takes place in the reverse order of the above process. When the drawer is withdrawn from the fully retracted position (Fig. 14), the detachable protrusion 25 of the movable rail 20 pulls the first locking jaw 142 and then the elastic spring 170. E) and move to the withdrawal position (FIG. 13). Withdrawal of the continuous drawer rotates the rotary motion member 140 counterclockwise by the detachable protrusion 25 pushing the first locking jaw 142. The first protrusion 144 of the rotary motion member 140 is caught by the arc-shaped groove 134 of the guide groove 132 (Fig. 12), 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. 11). At this time, the first protrusion 144 is caught in the arc-shaped groove 134 of the guide groove 132, so it is separated. The elastic spring 170 is in an extended state and is ready for the next inlet.

The automatic closing device of the slide may not operate normally. That is, when the drawer is pulled out, the movable member 165 must also be in the pulled out state (Fig. 11), but the foreign material is caught in the slide. Due to an exceptional situation, it may occur that the moving member 165 is placed in the retracted state (state of Fig. 14; see Fig. 3). Even in this case, the automatic closing device according to the present invention is again in a normal operating state. Can be returned.

If the drawer is in the withdrawal position but the moving member 165 is in the retracted state, the drawer does not come to the retracted position when the drawer is retracted. As shown in FIG. The detachable protrusion 25 of the rail 20 meets the inclined surface 149 which is connected to the first locking jaw 142 of the hook engaging portion 141 and exerts a force on the inclined surface 149. 140 is pushed in the direction of the arrow (A)

This is the first projection 144 of the rotary motion member 140, the elastic deformation projection 129 formed on the ceiling surface 127 of the moving member position portion 120 of the housing 110 in the direction of the arrow (A). The elastic deformation protrusion 129 is elastically deformed to the second deformation space 131 because the first deformation space 130 and the second deformation space 131 are formed at both sides of the elastic deformation protrusion 129. At the same time, the detachable protrusion 25 is caught over the inclined surface 149 and hooked on the hook catching portion 141 again. In this way, the automatic closing device prepares the drawer of the drawer and returns to the normal operation state.

According to the invention the undermount slide, ie the drawer, can be automatically moved to the fully retracted position. In addition, the shock absorbing force of the damper allows the drawer to move smoothly to the final retracted position, giving the consumer a luxurious feel.

Claims (15)

In the automatic closing device attached to the lower mounting slide including a moving rail which is formed with a detachable projection on one side, The automatic closing device is composed of a housing, a moving member and an elastic spring, The elastic spring has a tapered portion formed thinner than the spring body portion near the end of the spring, The body of the housing is a hollow box shape having a top, two sides, and two end faces, wherein a moving member position is formed inside the housing body, and a first spring having one side of the elastic spring coupled to the side of the housing body. A binding part is formed, and a moving member is attached to the moving member position part, and thus, a moving member binding part for reciprocating motion is formed. The moving member is composed of a linear motion member and a rotary motion member, the linear motion member is composed of a rotary motion member coupling portion and a body portion having a binding hole, the second spring is coupled to the other side of the elastic spring on one surface of the body portion A binding unit is formed, The rotational movement member is a rotational movement space portion having a binding projection inserted into the binding hole of the rotational movement member and the hook engaging portion is formed to engage with the detachable projection formed on one side of the slide moving rail, The elastic spring has one side coupled to the first spring engagement portion of the housing and the other side coupled to the second spring engagement portion of the linear movement member of the movement member, and the movement member engages with the movement member engagement portion of the eastern portion of the housing body. Automatic closing device characterized in that the reciprocating motion. The method of claim 1, wherein the moving member position portion is a space portion including a first end surface, a second end surface facing the first side, a first side, a second side facing the ceiling and the ceiling surface (inner side of the housing upper surface); And a movable member binding portion is formed on the ceiling surface, and the second side is open and the movable member is positioned such that a lateral portion of the movable member protrudes through the opened side. 3. The automatic closing device according to claim 2, wherein the moving member binding portion is a moving member guide groove formed of a straight groove and an arc-shaped groove. According to claim 3, The elastic deformation portion is formed on one side of the linear groove of the guide groove, the elastic deformation portion is composed of the first deformation space and the second deformation space formed on both sides of the elastic deformation projections, the elastic deformation projections, And the first and second deformation spaces are formed in a groove shape penetrating the upper surface of the housing. 5. The automatic closing device of claim 4, wherein the elastic deformation protrusion forms part of a side surface of the straight groove. According to claim 1, The linear motion member and the rotary motion member has a coupling means for engaging with the moving member binding portion of the moving member position portion, the coupling means is formed on the cylindrical engaging projection and the rotary motion member formed on the linear movement member Automatic closing device, characterized in that the first projection and the second projection of the cylindrical shape. The automatic closing device of claim 1, wherein the hook locking portion comprises a first locking jaw and a second locking jaw. The automatic closing device of claim 7, wherein an inclined surface is formed adjacent to the first locking step. According to claim 1, Automatic closing device, characterized in that the sliding projection is formed on the other side of the body portion of the linear motion member (opposite side of the surface on which the second spring binding portion is formed). The damper seat is formed in the housing body and the damper is positioned in the damper seat, wherein the damper is a part of the contracting force when the movable member moves by the contracting force of the elastic spring during the reciprocating motion of the movable member. Automatic closure device, characterized in that positioned to absorb. The damper of claim 10, wherein the damper includes a cylinder having a front protrusion and a piston rod protruding from one side of the cylinder, wherein the damper seat includes a damper cylinder insertion groove, a damper front protrusion insertion groove, and a damper piston rod insertion groove. Automatic closing device characterized in that. According to claim 1, wherein the rotational member engaging portion of the linear motion member has a straight surface, an oblique surface formed inclined thereto and an arc-shaped connecting surface connecting the two surfaces, the rotational motion space portion of the rotational movement member is perpendicular to each other And a first surface and a second surface, and an arc-shaped connection surface connecting the two surfaces. The automatic closing device according to claim 12, wherein an angle formed between the straight line and the oblique plane of the rotary motion member coupler is 65 °. The automatic closing device according to claim 1, wherein fixing means for fixing the housing to the slide is formed at both ends of the body of the housing or at both ends of the body and the center of the body. The automatic closing device of claim 14, wherein the fixing means comprises a fixing groove and a fixing protrusion.

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