A slide rail with an opening and closing locking device

Abstract

The present invention relates to a slide rail with an opening and closing locking device, comprising a slide rail body and a locking device, wherein the locking device comprises: an opening protrusion, the opening protrusion is arranged at one end of a movable outer guide rail of the slide rail body and is located at the closed end of the slide rail body; a closing protrusion, the closing protrusion is arranged at the other end of the movable outer guide rail and is located at the extended end of the slide rail body; an elastic pressure plate, the elastic pressure plate is fixed at one end of the fixed outer guide rail of the slide rail body and is located at the extended end of the slide rail body; and a roller, the roller is rotatably mounted on the elastic pressure plate and corresponds to the opening protrusion and the closing protrusion; when the slide rail body is closed, the closing protrusion is located on one side of the roller, so that the movable outer guide rail is kept in a closed state; when the slide rail body is opened, the opening protrusion is located on the other side of the roller, so that the movable outer guide rail is kept in an open state. The slide rail realizes the locking of the opening and closing of the slide rail through the roller, the opening protrusion, the closing protrusion and the elastic plate, and has a simple structure, reliable locking and a long service life.

Description

Technical Field

[0001] The invention relates to a slide rail, in particular to a slide rail with an opening and closing locking device. Background Art

[0002] The slide rail is a commonly used hardware. Most existing slide rails are locked by a plastic part at one end of the slide rail. This plastic part fails after a period of use, causing the slide rail to slide out automatically, which is inconvenient to use. The existing slide rail cannot be locked in the open state after opening. Summary of the invention

[0003] In order to solve the above problems, the present invention provides a slide rail with an opening and closing locking device which has a long service life and can realize both opening locking and closing locking. The specific technical solution is as follows:

[0004] A slide rail with an opening and closing locking device comprises a slide rail body and a locking device, wherein the locking device comprises: an opening protrusion, wherein the opening protrusion is arranged at one end of a movable outer guide rail of the slide rail body and is located at the closed end of the slide rail body; a closing protrusion, wherein the closing protrusion is arranged at the other end of the movable outer guide rail and is located at the extended end of the slide rail body; an elastic pressure plate, wherein the elastic pressure plate is fixed to one end of the fixed outer guide rail of the slide rail body and is located at the extended end of the slide rail body; and a roller, wherein the roller is rotatably mounted on the elastic pressure plate and corresponds to the opening protrusion and the closing protrusion; when the slide rail body is closed, the closing protrusion is located on one side of the roller, so that the movable outer guide rail remains in a closed state; when the slide rail body is opened, the opening protrusion is located on the other side of the roller, so that the movable outer guide rail remains in an open state.

[0005] Preferably, both sides of the opening protrusion and the closing protrusion are provided with inclined surfaces or arc surfaces.

[0006] Preferably, the elastic pressure plate is provided with a plurality of adjustment holes, and the roller is fixed in the adjustment holes.

[0007] Furthermore, the adjustment holes are interconnected to form an inclined waist hole.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] The slide rail with an opening and closing locking device provided by the present invention realizes the opening and closing locking of the slide rail through a roller, an opening protrusion, a closing protrusion and an elastic plate, and has a simple structure, reliable locking and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of a slide rail with an opening and closing locking device;

[0011] Figure 2 It is a front view of a slide rail with an opening and closing locking device;

[0012] Figure 3 It is a perspective view of the rear view of a slide rail with an opening and closing locking device;

[0013] Figure 4 It is a structural schematic diagram of the elastic pressure plate. DETAILED DESCRIPTION

[0014] The present invention will be further described with reference to the accompanying drawings.

[0015] like Figures 1 to 4 As shown, a slide rail with an opening and closing locking device includes a slide rail body 1 and a locking device. The slide rail body 1 is a conventional three-section guide rail. The slide rail body 1 includes a fixed outer guide rail 12, a movable outer guide rail 11, an intermediate connecting guide rail, steel balls and a retaining frame. The fixed outer guide rail 12 is arranged opposite to the movable outer guide rail 11.

[0016] The locking device comprises an opening protrusion 14, a closing protrusion 13, an elastic pressure plate 2 and a roller 3;

[0017] The opening protrusion 14 is arranged at one end of the movable outer guide rail 11 and is located at the closed end of the slide rail body 1; the closing protrusion 13 is arranged at the other end of the movable outer guide rail 11 and is located at the extended end of the slide rail body 1; the opening protrusion 14 and the closing protrusion 13 are both integral structures with the movable outer guide rail 11. Both sides of the opening protrusion 14 and the closing protrusion 13 are symmetrically provided with inclined surfaces or arc surfaces, and when both sides of the opening protrusion 14 and the closing protrusion 13 are inclined surfaces, an isosceles triangle is formed, and the vertex angle is an arc shape.

[0018] The elastic pressure plate 2 is located at the protruding end of the slide rail body 1. The elastic pressure plate 2 includes a fixed plate 21, a deformable plate 22 and a connecting plate 23 arranged in sequence. The fixed plate 21, the deformable plate 22 and the connecting plate 23 are in a Z shape. The fixed plate 21 is riveted to the fixed outer guide rail 12. The connecting plate 23 is provided with three adjustment holes 24. The three adjustment holes 24 are interconnected. The three adjustment holes 24 form a waist-shaped hole and are arranged obliquely. The three adjustment holes 24 form three different gears, so that three external forces of different force values ​​are required to open and close the locking device. The rotating shaft 31 of the roller 3 is riveted on the adjustment hole 24 through the pad 32. The roller 3 corresponds to the opening protrusion 14 and the closing protrusion 13; the adjustment hole 24 is used to adjust the position of the roller 3, thereby realizing the adjustment of three external forces. Since the adjustment position is limited, the spacing between the three adjustment holes 24 is very small, and they are interconnected and staggered, but they still maintain the limit function, that is, the roller 3 will not automatically slide into another adjustment hole 24 when it is fixed in any adjustment hole 24, and a stable push-pull force is maintained. The larger the distance between the adjustment hole 24 and the deformable plate 22, the smaller the locking force formed, and the smaller the distance between the adjustment hole 24 and the deformable plate 22, the greater the locking force formed. The tilted setting is to increase the adjustment distance and achieve a larger difference between the three forces.

[0019] When the slide rail body 1 is closed, the closing protrusion 13 is located on one side of the roller 3, so that the movable outer guide rail 11 remains in a closed state; when the slide rail body 1 is opened, the opening protrusion 14 is located on the other side of the roller 3, so that the movable outer guide rail 11 remains in an open state. Figure 2 As shown, when the slide rail body 1 is fully closed, the closing protrusion 13 is located on the left side of the roller 3, and the closing protrusion 13 and the roller 3 lock the movable outer guide rail 11 of the slide rail body 1, and prevent the movable outer guide rail 11 and the fixed outer guide rail 12 from being displaced in the absence of external force. When the slide rail body 1 is to be opened, the closing protrusion 13 slides to the right over the roller 3 through external force, and the movable outer guide rail 11 is opened, and the movable outer guide rail 11 can be freely extended and retracted. When the slide rail body 1 is fully opened and subjected to a certain pulling force, the opening protrusion 14 slides from the left side of the roller 3 to the right side, and the movable outer guide rail 11 is locked in the fully opened state, and the two outer rails are also prevented from being displaced in this state. When the slide rail body 1 is subjected to a certain external thrust, the opening protrusion 14 slides from the right side to the left side of the roller 3, and the movable outer guide rail 11 can slide freely again; when it continues to be subjected to a certain thrust, the closing protrusion 13 slides from the right side to the left side of the roller 3, so that the movable outer guide rail 11 is locked by the locking device again in the closed state.

[0020] The opening and closing of the locking device is that after receiving a certain force value, the opening protrusion 14 or the closing protrusion 13 generates a thrust on the roller 3 through the inclined surface, and the roller 3 drives the connecting plate 23 and the deformation plate 22 of the elastic pressure plate 2 to deform, and the roller 3 moves upward, and finally the opening protrusion 14 or the closing protrusion 13 can slide over the roller 3. When the opening protrusion 14 or the closing protrusion 13 completely slides over the roller 3, the elastic pressure plate 2 returns to its original shape, so that the roller 3 is reset, and the above process is repeated to realize the opening and closing of the locking device.

[0021] The roller 3 can move flexibly, and can also reduce the wear between the roller 3 and the protrusion, and improve the service life. The roller 3 cooperates with the inclined surfaces or arc surfaces on both sides of the protrusion, and is flexible and does not get stuck when opening and closing.

[0022] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the protection scope of the claims of the present invention.

Claims

1. A slide rail with an opening and closing locking device, comprising a slide rail body (1), characterized in that: Also included is a locking device, the locking device comprising: an opening protrusion (14), the opening protrusion (14) being arranged at one end of the movable outer guide rail (11) of the slide rail body (1) and being located at the closed end of the slide rail body (1); a closing protrusion (13), the closing protrusion (13) being arranged at the other end of the movable outer guide rail (11) and located at the protruding end of the slide rail body (1); an elastic pressing plate (2), the elastic pressing plate (2) being fixed to one end of the fixed outer guide rail (12) of the slide rail body (1) and being located at the protruding end of the slide rail body (1); and a roller (3), the roller (3) being rotatably mounted on the elastic pressure plate (2) and corresponding to the opening protrusion (14) and the closing protrusion (13); When the slide rail body (1) is closed, the closing protrusion (13) is located on one side of the roller (3), so that the movable outer guide rail (11) remains in a closed state; when the slide rail body (1) is opened, the opening protrusion (14) is located on the other side of the roller (3), so that the movable outer guide rail (11) remains in an open state; The elastic pressure plate (2) is provided with a plurality of adjustment holes (24), and the roller (3) is fixed in the adjustment holes (24); The adjustment holes (24) are interconnected to form an inclined waist hole.

2. A slide rail with an opening and closing locking device according to claim 1, characterized in that: Both sides of the opening protrusion (14) and the closing protrusion (13) are provided with inclined surfaces or arc surfaces.

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