KR101399538B1 - Apparatus for opening and closing of slide door for reefer - Google Patents

Abstract

Provided is a slide door opening/closing apparatus for a reefer container including upper and lower guide rails mounted to upper and lower portions of a container body; a slide moving along the upper guide rail; an upper swing plate connecting pin engaged with the slide and exposed outwardly from the upper guide rail; a swing plate engaged with the upper swing plate connecting pin at one side; a support rod fixed to the other side of the swing plate and engaged with the front surface of the door; and a lower swing plate connected to a lower portion of the support rod and the lower guide rail to be enable to rotate. The slide is provided with a locking boss at a position adjacent to the swing plate connecting pins, so that the locking boss is moved within a desired range when the external force is applied, and is resiliently returned when the external force is not applied. The swing plate connecting pins are engaged such that the pin can rotate about an imaginary axis which is perpendicular to an opening/closing direction of the slide door and is parallel with the front surface of the door. The swing plate connecting pins have a head portion formed with a locking groove adjacent to a rotation portion so that the locking boss abuts against the locking groove and thus the upper swing plate forms a desired angle (vertical) to the upper guide rail, and a pin portion extending from the head portion to be exposed outwardly from the upper guide rail and then fixed to the upper swing plate. When the slide arrives at a close position of the door along the upper guide rail, the locking boss is pushed to an open direction of the door by an unlocking bar to be released from the fastening state between the locking boss and the locking groove, so that the swing plate connecting pin rotates about the imaginary axis.

Description

[0001] The present invention relates to an apparatus for opening and closing a slide door of a freezing container,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slide door opening / closing device for a refrigerator container,

And more particularly, to a slide door opening / closing device for a refrigerator container, which is capable of preventing scratching and deformation by keeping the distance between the slide door and the container body of the freezing container constant and preventing the guide rail from being deformed or damaged.

The door of the freezing container shall be made to be able to maintain airtightness with the freezing container body in order to prevent the cold air from leaking to the outside. On the other hand, the refrigerating container for a vehicle is susceptible to impact and vibration while moving, and in such an environment, the door should be kept closed stably even with small vibration or shock when moving.

However, if the force is excessively momentarily exerted during the process of opening and closing the door, or if the distance between the door and the main body can not be stably secured, deformation of the door itself or guide rail guiding the opening of the door may occur. It may be difficult to maintain the airtightness of the refrigeration container or the operation of the opening and closing device may become difficult.

Patent Application No. 2004-0089472 shows an example of a conventional refrigerator container opening / closing device. In this case, a stopper having an inclined surface and an engaging groove is connected to a bottom of one side of the slide, which is coupled to the upper guide rail, by a spring, and the container body is provided with a guide bracket that contacts the inclined surface of the stopper when the door is closed. The upper swing plate of the one side support bar is coupled to the engagement groove of the stopper so that the container main body and the door are maintained at an appropriate interval. When the door reaches the closing point, the stopper is rotated by the guide bracket, So that the door is closed by rotation of the swing plate.

However, the slide door opening / closing device of the refrigerator container having such a structure requires a spring, a connecting pin, and a guide bracket that connect and hold the stopper and the stopper, thereby complicating the structure and increasing the manufacturing cost. It is difficult to maintain a clean appearance due to a large exposure.

In addition, when the door is opened and closed, noise is generated by the friction between the stopper and the guide bracket, the flexible operation is difficult due to the large frictional resistance caused by the spring, and the contact position between the stopper and the guide bracket A malfunction may occur due to the rotation of the door. In this state, if an unreasonable force is applied to close the door, there is a problem that the connection pin or the guide bracket connecting the stopper is deflected to lose its function.

Registration Utility Specification No. 20-0389929 discloses a refrigerator container slide door opening / closing device of another configuration for solving such a problem.

1 to 3, the door 10 includes the guide rollers 26 and 28 of the lower swing plates 22 and 24 of the support rods 12 and 14 and the auxiliary guide rollers 30 The upper and lower swing plates 16, 18, 22 and 24 are engaged with the upper and lower guide rails 6 and 7 when the slide is moved on the guide rails for opening and closing the door by interposing the guide pieces 8a of the lower guide rails 8 The gap between the door 10 and the container main body can be kept constant and the guide roller of the slide 20 and the guide of the lower swing plates 22 and 24 The rollers 26 and 28 and the auxiliary guide roller 30 are caused to roll so that the sliding operation is smoothly performed when the door is opened and closed.

However, the guide rails and the slides used in a conventional vehicle refrigerator container slide door opening / closing device are not made of a very strong material, and there is a possibility of deformation if an external force is applied. Ideally the auxiliary guide roller 30 contacts the guide piece 8a to rotate the upper and lower swing plates 16, 18 and 22 when gripping the handle 38 to open the door, The upper and lower guide rails 6 and 8 and the upper and lower guide rails 6 and 8 should be maintained at a predetermined interval between the door and the main body. However, when excessive force is applied by the user, The distance between the door 10 and the main body can be reduced so that scratches and door deformation between the door and the main body can be made and the auxiliary guide roller 30 can be deformed by pressing the guide piece 8a of the lower guide rail The opening and closing operation of the door becomes difficult, and in a severe case, the opening and closing device may need to be replaced.

Disclosure of Invention Technical Problem [8] The present invention has been made to solve the above-described problems of the conventional refrigerator sliding door opening / closing apparatus, and it is an object of the present invention to provide a swing plate and a handle, which can be maintained at a desired angle, And to maintain a constant distance between the door and the main body.

Accordingly, the present invention prevents the door from being scratched or deformed by contact with the main body, and prevents the problem that the guide rail is deformed and damaged due to an abnormal force applied to the guide rail when the guide roller moves in the guide rail, And a door opening / closing device for a refrigerator container.

According to an aspect of the present invention,

An upper guide rail and a lower guide rail mounted on upper and lower portions of the container main body, a slide moving along the upper guide rail, an upper swing plate connecting pin coupled to the slide and exposed to the outside of the upper guide rail, And a lower swing plate rotatably connected to a lower portion of the lower support rail and a lower portion of the lower support rail, wherein the upper swing plate is coupled to the swing plate, In this case,

The slide is provided with a latching jaw which is elastically returned when the external force is received and moves within a certain range when the external force is lost,

The swing plate connecting pin is rotatably coupled to the slide so as to be rotatable about a virtual axis parallel to the opening and closing direction of the door and parallel to the front surface of the door so that the upper swing plate is aligned with the upper guide rail at a predetermined angle And a pin portion which is extended from the head portion and is exposed to the outside of the upper guide rail and fixed to the upper swing plate,

When the slide comes to the closing position of the door along the upper guide rail, the locking jaw is pushed toward the opening direction of the door to release the engagement state between the locking jaw and the locking groove so that the swing plate connecting pin can rotate about the virtual axis And a releasing release bar.

In the present invention, the upper swing plate connecting pin, the upper swing plate and the lower swing plate, and the supporting bar are combined with each other to form a set of supporting rods, and these sets of supporting rods are provided in the opening / By means such as a link bar connecting them to each other to move and open the door. Therefore, only one of the support bar sets can be provided with a door opening handle, and by operating the handle, the entire set can be moved and the door can be opened and closed.

In the present invention, the latching jaw may be provided with a stepped corner such as a step, and in this case, the latching groove formed in the head portion also becomes a groove corresponding to the latching jaw. Particularly, when the engaging jaw has a stepped edge such as a step, a part of the edge is slipped smoothly through chamfering or curved surface treatment so that the head can be smoothly operated when engaged or disengaged between the engaging jaw and the engaging groove have.

In the present invention, when the door is opened by forming a stopper groove on the latching groove and the rotation peripheral portion separately from the latching groove, the upper swing plate connecting pin is prevented from rotating more than 90 degrees in a state where the latching jaw and the latching groove are not completely engaged when the door is opened. It is desirable to play a role of In this case, the slide or the guide rail may be provided with a separate anti-rotation protuberance corresponding to the stopper groove.

In the present invention, the upper swing plate and the upper swing plate connection pin may be fixed by releasable fastening means such as bolts and nuts, but are preferably connected to permanent fixation such as welding that is more integral and free from loosening.

In the present invention, although the angle between the upper swing plate and the upper swing plate and the handle and the rails can be kept constant, for example, in the vertical direction, the auxiliary guide rollers as in the prior art are further provided on the lower swing plate, It is also possible to report that the interval between the freezing container bodies is maintained.

In the present invention, a jaw such as a frictional jaw (bent portion) made by bending a leaf spring or the like is provided on the guide rail at the fully opened position or the loaded position of the door, and the frictional jaw is contacted to the front and rear ends of the slide, It is desirable to provide a corresponding jaw (corresponding flexion portion and ridge portion) so as to reduce the speed of the slide and maintain the position without moving when there is no large external force.

According to the present invention, the swing plate and the handle, which are coupled to the support bar when the door is opened and closed by a simple configuration change in which the engagement portion is provided on the slide and the engaging groove is fastened to the swing plate connecting pin, It is possible to maintain an angle, for example, a right angle, and maintain a constant distance between the door and the container body.

Therefore, according to the present invention, there is no possibility that the door (slide door) and the main body (container main body) come into contact with each other and are not scratched or deformed, and when the opening is released, the support rod is excessively moved by excessive force, It is possible to prevent a problem that structural components such as guide rails and slides are deformed and damaged and opening and closing of the door is difficult.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a fragmentary perspective view showing an example of a conventional refrigerator container slide door opening /
Fig. 2 is a perspective view showing the lower guide rail and the guide roller portion in Fig. 1,
Fig. 3 is a sectional view taken perpendicular to the longitudinal direction of the lower guide rail with respect to Fig. 2,
FIG. 4 is an exploded perspective view showing a closed position part mainly defined in an embodiment of the present invention,
FIG. 5 is an exploded perspective view showing the engaging jaw and the upper swing plate connecting pin of the embodiment of the present invention in detail,
6A to 6F are a front view showing a change in the mutual position of the upper guide rail around the door closing position and a head part of the latching jaw and the upper swing plate connecting pin mounted on the slide, respectively, and corresponding plan views of the latching jaw and the head part.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

4, the upper guide rail 6 and the lower guide rail 8, the slide 20, the upper swing plate connecting pin 50, the upper swing plate 16, the support rod 12, the lower swing plate 22, a lower roller 26 and a link bar 36 are disclosed.

The upper guide rail 6 and the lower guide rail 8 are installed at the upper and lower portions of the container body. The upper and lower guide rails 6 are covered with a wall and the lower wall 6a is provided with a center gap 6d in a similar manner to a quadrangle in cross section perpendicular to the longitudinal direction Respectively. The lower guide rail 8 is also clogged with the upper wall, both the front and rear side walls are blocked with the wall, but the front wall 8a is formed slightly shorter, and the lower wall is not present.

The upper guide rail 6 has a slide 20 in the form of a long rod or a long plate which moves along the rail in an inner space surrounded by the wall. On both sides of the slide 20 in the longitudinal direction, a pair of rollers 21 are provided on both front and rear sides of the slide 20, and two pairs of rollers 21 are provided. The rollers 21 contact the lower wall 6a on both sides of the clearance 6d of the upper guide rail 6 and roll so that the slide 20 can easily move along the upper guide rail 6. [ On the right side of the pair of right rollers, two rectangular holes 23 and 25 are formed in the body of the slide 20 as seen in an exploded perspective view of FIG. 4, and a further right square hole 25 in the square hole And an opening portion 25a connected to the opening portion 25a.

A head portion 51 of the upper swing plate connecting pin 50 is provided in the rectangular hole 25 having the opening portion 25a and is extended downward from the lower surface of the head portion 51 to the opening portion 25a A pin-shaped fin portion 59 is disposed. In view of the above, the head portion 51 is close to a thick circular plate or a short circular cylinder, provided with a latching groove 51a recessed concavely in the periphery of the circular plate. On the other hand, a stopper groove 51c is formed on the rotation peripheral portion opposite to the engagement groove 51a in such a manner that the engagement groove 51a is bent to the left and right. The fin portion 59 extends from the head portion 51 so as to be exposed below the upper guide rail 6 through the opening portion 25a and the gap 6d between the upper guide rails.

The diameter or the width of the head portion 51 is greater than the thickness of the slide 20 and the diameter or width of the fin portion 59 is smaller than the thickness of the slide 20 so that the upper swing plate connection pin 50 is mounted on the slide, The upper swing plate connection pin 50 is fixed to the slide 20 so as to rotate about a virtual axis which is parallel to the vertical direction and perpendicular to the front surface of the door.

In the other rectangular hole 23 of the slide 20, a latching jaw 40 and a spring 49 are provided. The spring 49 is provided on the left side of the square hole 23 and the latching jaw 40 is provided on the right side and the right side of the latching jaw 40 is branched into two bifurcations, The hook 40 is pushed by the spring 49 and is moved to the right until the right side of the slide wall constituting the slider 40. In this state, (41). The upper swing plate connecting pin 50 and the upper swing plate connecting pin 50 project upward beyond the head portion 51 of the upper swing plate connecting pin 50 in a state where the forking jaw 40 and the upper swing plate connecting pin 50 branching rearward are fixed to the square holes of the slide 20 (43).

The left part of the square hole 23 is fixed to the slide surface in the forward and backward direction with the spring 49 and the stopping jaw 40 mounted on the slide square hole 23, (23). Therefore, when the external force is applied, the restricting force of the spring 49 causes the restricting jaw 41 to be brought into contact with the head portion 51 by being pushed to the original position at the right side.

Accordingly, when the upper swing plate connecting pin 50 is rotated counterclockwise when viewed from above with respect to the virtual axis, when the engaging groove 51a of the head portion 51 is brought into contact with the engaging jaw portion 41a, The upper swing plate connecting pin 20 is pushed up to the right end door closing position of the upper guide rail 6 so that the protruded portion 43 of the latching jaw 40 is in contact with the releasing bar 6c, (50) can not be rotated.

The lower portion of the pin 59 of the upper swing plate connecting pin 51 is guided to the upper guide rail 6 through the opening 25a of the square hole 25 of the slide and the gap 6d of the lower wall of the upper guide rail 6. [ And is welded together with the upper swing plate 16 in a state of passing through one side of the upper swing plate 16.

The upper swing plate 16 is formed of an elongated elliptical or track plate and is fixed to the fin 59 in a state of being penetrated by the pin 59. The other side of the upper swing plate 16 And is rotatably fixed to the upper end. The lower end of the support rod 12 is also rotatably fixed to one side of the lower swing plate 22. [ Here, the lower swing plate 22 has a U-shaped wall section cut perpendicularly to the length, and is coupled to the support rod 12 on the upper surface of the upper wall 22a.

The support bar is fixed to the front of the door so as to be rotatable about a support rod longitudinal axis parallel to the longitudinal direction of the support bar. In a state where the angle between the support bar and the upper and lower swing plates and the angle between the upper and lower guide rails and the upper and lower swing plates are fixed, The distance between the door and the guide rail or the container becomes constant when the guide roller maintains contact with the inner surface of the front side wall of the lower guide rail.

A connecting pin is protruded upward from the other side of the upper surface of the lower wall 22b of the lower swing plate 22 and extends vertically to the inside of the lower rail 8. The connecting pin has a lower guide roller 26, The lower guide roller 26 and the lower guide roller 26 are connected to each other.

The lower guide roller 26 is provided inside the lower guide rail 8 so that when the roller surface contacts the front side wall 8a of the lower guide rail 8 and the door moves left and right for opening and closing, Roll over the side.

Shaped wall of the lower swing plate 22 moves toward the lower guide rail 8 when the lower swing plate 22 is moved from the closed state of the door to the lower guide rail 8 while receiving the lower guide rail 8 with the opened portion of the C- 8).

4 shows only one set of support rods to which the upper swing plate connecting pin 50, the upper swing plate 16, the lower swing plate 22 and the support rods 12 are combined. In this embodiment and in most cases, A set of support rods are installed side by side and are coupled to each other by a coupling means such as a link bar 36 as shown.

Accordingly, a handle attached to only one of the support rods can be operated to open and move the door attached to the support rods while operating the entire support rods with the handle alone.

A stopper 31 for closing the upper guide rail 6 to prevent the slide 20 from being separated from the upper guide rail 6 is provided at the right end of the upper guide rail 6, (33). The leaf spring (33) has a bent portion (33a) whose middle portion is bent. The slide 20 has a corresponding bent portion 20a corresponding to a bent portion 33a formed at the upper end of the door 20 at a position where the door is completely closed and a corresponding bent portion 20a is formed on the left side of the corresponding bent portion 20a. And has a raised portion 20b higher than the low point.

Therefore, even when the slide 20 is moved to the right to close the door, the plate spring of the bent portion 33a is deformed while the raised portion 20b and the bent portion 33a contact first, Friction is caused to reduce the speed of the slide 20 and thus the right end of the slide and the right stopper 31 of the upper guide rail 6 are strongly collided to prevent noise or breakage.

Then, once the slide 20 is completely in the right-side closed position, the bent portion 33a and the corresponding bent portion 20a fit into each other, so that even when the handle does not return to the locked position for complete door closing, The door and the slide can be prevented from moving along the rail.

Here, although the right end of the upper guide rail 6 is described as an example, the upper end guide rail 6 and the left end of the slide 20 may be configured in the same manner. The curved portion of the leaf spring is provided on the inner surface of the front side wall 8a of the lower guide rail 8 so that the lower guide roller 26 passes the curved portion in place of the corresponding curved portion of the slide to reduce the speed, It is possible to prevent the door from moving unintentionally due to a small external force in the fully opened position or the fully closed position.

6A to 6E, the operation of the components, particularly when the door is opened and closed based on the configuration of the abnormal slide door opening / closing device, is performed with particular attention to the action of the latching jaw 40 and the head portion 51 Let's look at it.

6A, the slide is in the door closing position at the right end of the upper guide rail, and the upper swing plate connecting pin 50 is rotated in the counterclockwise direction when viewed from above the handle mounted on one of the support rod and the support rod, And it is rotated 90 degrees clockwise.

At this time, the protruding portion 43 of the latching jaw is closed at the left end of the release bar 6c and pushed to the left in the rectangular hole 23, so that the latching jaw portion 41a is engaged with the latching groove 51a are released. The release bar 6c is generally extended to the left from the stopper 31 or the leaf spring 33. However, the release bar 6c may be fixed to the inner surface of the rear wall of the upper guide rail. Thus, the slide 20 is fixed regardless of the movement of the slide 20, and when the slide moves to the closed position, it crosses over the head portion 51 and contacts the protruding portion of the latching jaw.

6B shows a state in which when the user looks at the handle to open the door, the user rotates clockwise and applies a force to the left. As the force is applied to the left, the slide has moved slightly to the left from the door closed position, and the handle and the upper swing plate connection pin 50, which are installed in one of the support rod and the support rod, It rotates about 45 degrees and is in the middle position between lock and open.

In this case, as the slide 20 partially moves to the left, the upper swing plate connecting pin 50 is rotated by 45 degrees while moving slightly to the left of the initial position of FIG. 6A. However, The upper swelled portion 43 is still in contact with the left end of the release bar 6c, and the upper swing plate is slightly closer to the swing plate 6c.

6C shows a state in which the user turns the handle clockwise and urges the left side more than the state of FIG. 6B to open the door. As the force is further increased to the left, the slide has moved further to the left from the door closed position, and the handle and the upper swing plate connection pin 50, which are provided in one of the support and support rods, And it is in an open state or an open state.

As the slide 20 further moves to the left, the upper swing plate connecting pin 50 moves further to the left, and the engaging jaw moves to the left so that the upwardly pivoted portion 43 is moved from the left end of the release bar 6c The engagement jaw 40 is in contact with the curved portion 51b and the jaw portion 51d above the engagement groove 51a due to the rotation of the head portion and is still pushed slightly toward the spring State. The engaging jaw and the head come into contact with each other but do not interfere with rotation of the head portion (upper swing plate connecting pin) in a completely opened state by the chamfered portion 41a of the curved portion 51b and the engaging shoulder 41.

6A, the latching jaw is partially moved to the right to be engaged with the latching groove. However, depending on the arrangement of the latching jaw and the release bar and the shape of the head portion, As shown in FIG. 6 (d), the releasing bar and the latching jaw which are slightly separated again may come into contact with each other, and the complete fastening may not be achieved.

At this time, if the user rotates the handle by force, the upper swing plate connecting pin excessively rotates, so that there is a risk that the latching groove portion passes over the latching jaw portion or the latching jaw is not correctly fastened to the latching groove. It is difficult to maintain a constant spacing between them. However, in the present embodiment, the stopper groove prevents the stopper groove from touching the separate support bar on the inner surface of the upper guide rail or touching the right end of the square hole 25 of the slide.

6E shows a state in which the user pushes the handle and the upper swing plate connection pin completely in the opened state rotated 90 degrees from the initial state, And the engaging jaw is completely moved to the left in the rectangular hole 23 and fastened to the engaging groove of the head portion.

In this state, the upper swing plate connecting pin, which is pushed to the left to open the door, can move the door while maintaining the angle of 90 degrees from the beginning due to the engagement of the latching jaw and the latching groove, Can be kept constant at all times.

The above is an examination of the door opening process, and the process of closing the door is completely opposite to the process of opening the door, so that the description thereof will be omitted. At this time, however, the chamfered portion 41a of the latching portion can smoothly and easily switch the upper swing plate connecting pin or, consequently, the handle to the locked position.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, in the present invention, although the angle between the upper and lower swing plates and the handle and the rails can be kept constant, for example, the angles of the latching jaws and the latching grooves can be maintained vertically, And to maintain the gap between the freezing container body and the freezing container body.

That is, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

6: upper guide rail 8: lower guide rail
10: Door 12, 14: Supporting rod
16: upper swing plate 20: slide
22: lower swing plate 23, 25: square hole
21: roller 26, 28: guide roller
30: auxiliary guide roller 36: link bar
38: handle 40: latching jaw
41: latching jaw 49: spring
50: upper swing plate connecting pin 51: head portion
51a: Retaining groove 51c: Stopper groove
59:

Claims (6)

An upper guide rail and a lower guide rail installed at upper and lower portions of a door opening portion of the freezing container main body;
A slide moving along the upper guide rail;
An upper swing plate connecting pin coupled to the slide and exposed from the upper guide rail,
A swing plate having one side coupled to the upper swing plate connecting pin;
A support rod whose upper portion is fixed to the other side of the swing plate,
And a lower swing plate rotatably connected to the lower guide rail at a lower side of the support rod, the sliding door opening /
The slide is provided with a latching jaw which moves in a predetermined range when receiving an external force and resiliently returns to its original position when external force is lost,
The swing plate connecting pin is coupled to the slide so as to be rotatable about a virtual axis that is perpendicular to the opening and closing direction of the door and parallel to the front surface of the door. The upper swing plate is coupled to the upper guide rail And a pin portion extended from the head portion and exposed to the outside of the upper guide rail to be fixed to the upper swing plate is provided with a head portion where a latching groove is provided at a rotation peripheral portion so as to maintain a predetermined angle and,
When the slide comes to the closing position of the door along the upper guide rail, the locking jaw is pushed in the opening direction of the door to release the locking state of the locking jaw and the locking groove, so that the swing plate connecting pin rotates about the virtual axis And a release releasing bar for releasing the engagement of the engaging portion and allowing the engaging portion to rotate. The method according to claim 1,
The upper swing plate connecting pin, the upper swing plate, the lower swing plate, the lower swing plate, and the lower swing plate are coupled to each other by a plurality of linking members, And the door is opened and closed. The method according to claim 1,
Wherein the latching jaw has a stepped edge like a step,
Wherein the latching groove is formed to be fastened together with the latching jaw, and a part of the L-shaped corner is chamfered or curved. The method according to claim 1,
Wherein the stopper groove is provided on the rotary peripheral portion separately from the latch groove on the head portion and the slide or the guide rail is provided with a reverse rotation stopper so that when the door is opened, Wherein the stopper groove is provided in the stopper groove to prevent the upper swing plate connecting pin from rotating more than a predetermined angle for opening the door in a state where the upper swing plate connecting pin is not completely fastened due to the release of the door. Opening and closing device. The method according to claim 1,
Wherein the upper swing plate and the upper swing plate connecting pin are fixed to each other by welding. 6. The method according to any one of claims 1 to 5,
A friction guide is provided on the upper guide rail or the lower guide rail at a fully opened position or a closed position of the door, and a front end or a rear end of the slide contacts the friction guide, Wherein a corresponding jaw is provided to reduce the speed of the slide and to keep the slide closed or open position without movement when there is no external force.

Images