CN101467823A - Slide rail automatic retracting device - Google Patents

Abstract

The invention relates to an automatic folding device of a sliding rail, which comprises a fixed seat, a guide rod, a sliding block, an elastic component and a pulling unit, wherein the sliding rail at least comprises a first rail and a second rail; the guide rod penetrates through the open slot; the sliding block is sleeved on the guide rod in a sliding manner and is provided with a convex column corresponding to the sliding chute; one end of the elastic component is a fixed end, and the other end of the elastic component is connected to the sliding block; the drawing unit is arranged on the second rail and comprises an opening, a first guide part, a second guide part, a first clamping and abutting part and a second clamping and abutting part; the sliding block forms a linkage action corresponding to the pulling unit, so that the second rail can automatically retract relative to the first rail at the tail section of the retracting stroke.

Description

Slide rail automatic retracting device

technical field

The invention relates to an automatic retracting device for slide rails, in particular to a design for automatically retracting the movable second rail of the slide rail at the end of the retraction stroke relative to the fixed first rail.

Background technique

Generally, when a drawer or the like is sliding horizontally through the slide rail, the whole movement of pulling out, unfolding or retracting back to the position will be completed by the user's force operation. In addition, there are also slide rails that can automatically return to the position. Product flow products are widely available in the market. This type of automatic return slide rail can automatically put the drawer into the storage space of the cabinet and other things at the end of the stroke when the drawer is pushed back and is completely closed.

The above-mentioned automatic retractable slide rails have been disclosed in recent patent announcements, such as U.S. Patent No. 7,040,725 B1, No. 7,077,487 B2, No. 7,083,243 B2, No. 7,104,691 B2, and No. 7,244,005 B1.

And the present invention seeks to possess better market competitiveness and economical and practical product in this field.

Contents of the invention

The object of the present invention is to provide a sliding rail automatic retracting device to achieve:

The sliding rail can be folded automatically, and the movement of the mechanism is reliable, the function is not easy to fail, and the service life is long.

The sliding rail automatic retracting device according to the present invention includes a sliding rail, a fixed seat, a guide rod, a slider, an elastic component and a pulling unit, and is characterized in that: the sliding rail at least includes a first rail and a second rail, The fixing seat is connected to the first rail. The fixing seat has a top surface, a bottom surface and a side surface. The top surface and the bottom surface are provided with a through slot. The retreat area and a parking area; the guide rod is placed in the slot; the slider sleeve slides on the guide rod, and the slider is provided with a protrusion corresponding to the chute; the first end of the opposite two ends of the elastic component is a fixed end, and the other A second end is connected to the slider; the pulling unit is arranged at the rear end of the second rail, and the pulling unit includes an opening, a first guiding part, a first locking part, and a second locking part connected in sequence It forms a linkage relationship with the second guide part; the slider corresponds to the pulling unit, so that the second rail is automatically retracted relative to the first rail at the end of the retraction stroke.

Wherein, the fixing base is provided with fixing feet and through holes, and the first rail is respectively provided with fixing pieces and fixing holes corresponding to the fixing feet and the through holes, and includes a fixing pin corresponding to the through holes and the fixing holes.

Wherein, the first rail is provided with stoppers at intervals corresponding to the width of the fixing seat.

Wherein, the fixing base is provided with a first hook to connect the first end of the elastic component.

Wherein, the first rail is provided with a second hook to connect the first end of the elastic component.

Wherein, the slider is provided with a connecting column corresponding to the second end of the elastic component.

Wherein, the first guiding part of the pulling unit is an inclined edge, and the second guiding part is an arc edge.

Wherein, the pulling unit is integrally formed on the second rail.

Wherein, the pulling unit is a separate block seat, which is combined with the second rail.

Description of drawings

To further illustrate and confirm the above-mentioned purpose, structural features and effects of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

Fig. 1 is a three-dimensional assembled view of an embodiment of the present invention (implemented in a slide rail comprising at least a first rail and a second rail).

Fig. 2 is an exploded perspective view of an embodiment of the present invention.

Fig. 3 is a schematic diagram of a completely folded state of the embodiment of the present invention.

Fig. 4 is one of the schematic diagrams of the operation of the embodiment of the present invention (normal condition, the pulling unit brings out the slider).

FIG. 5 is the second schematic diagram of the operation of the embodiment of the present invention (normal condition, the slider is stagnant in the parking area).

Fig. 6 is the third schematic diagram of the operation of the embodiment of the present invention (abnormal situation, the slider rebounds, and the pulling unit moves to the slider again).

FIG. 7 is the fourth schematic diagram of the operation of the embodiment of the present invention (the abnormal condition is eliminated, the pulling unit is pushed back, and its first locking portion is locked against the protrusion of the slider again).

FIG. 8 is one of the schematic diagrams of the folding operation of the embodiment of the present invention (the protrusion of the slider snaps into the second latching portion of the pulling unit).

Fig. 9 is the second schematic diagram of the folding operation of the embodiment of the present invention (the slider cooperates with the pulling unit to pull back the second rail by means of the elastic component).

Fig. 10 is another embodiment diagram of the partial structure of the present invention (the first rail is connected with the elastic component).

Fig. 11 is another embodiment diagram of the partial structure of the present invention (the pulling unit of the separated block seat).

Detailed ways

As shown in Figure 1 and Figure 2, it is a specific embodiment of the present invention, including a first rail 1, a second rail 2, a fixed seat 3, a guide rod 4, a slider 5, an elastic component 6 and a pulling unit 7, in:

A bearing member 8 is placed inside the first rail 1, and a stop body 11, a fixing piece 12 and a fixing hole 13 are provided, and the stop body 11 is arranged at intervals corresponding to the width of the fixing seat 3;

The second rail 2 is connected to the bearing 8 and slides telescopically relative to the first rail 1;

The fixed seat 3 is connected to the first rail 1. The fixed seat 3 has a top surface 31, a side surface 32 and a bottom surface 33 connected to each other. The top surface 31 is provided with a through slot 34 corresponding to the bottom surface 33, and the side surface 32 is provided with a slide groove 35. The opposite ends of the chute 35 respectively form a retreat area 351 and a rest area 352 that bend and extend toward the top surface 31, and the fixed seat 3 is provided with a fixed foot 36 and a perforation 37 corresponding to the fixed piece 12 of the first rail 1 With the fixing hole 13, the position of the fixing seat 3 is limited by the stop body 11 of the first rail 1, and the fixing piece 12 is pressed against the fixing foot 36, and a fixing pin 38 is included to pass through the through hole 37 and the fixing hole 13 for riveting. , in addition, the fixed seat 3 is provided with a first hook piece 39;

Guide rod 4, the upper end of the rod body 41 has a cap body 42, and the rod body 41 is inserted into the slot 34 of the fixed seat 3, and the cap body 42 and the lower end of the rod body 41 are against the top surface 31 and the bottom surface 33, and the rod body 41 is connected to the opening. sliding in the slot 34, wherein the lower end of the rod body 41 can be a riveted enlarged end 43;

The slider 5 is set on the rod body 41 of the guide rod 4 through the through hole 51 to slide in conjunction. The slider 5 is provided with a protruding post 52 corresponding to the chute 35 of the fixed seat 3 and protruding, and is provided with a connecting post 53 ;

The elastic component 6 has an opposite first end 61 and a second end 62, the first end 61 is connected corresponding to the first hook piece 39 of the fixed seat 3, and the second end 62 is connected to the connecting column 53 of the slider 5;

The pulling unit 7 is integrally formed on the rear end of the second rail 2. The pulling unit 7 includes an opening 71, a first guiding portion 72, a first engaging portion 73, and a first connecting portion connected in sequence. Two locking portions 74 and a second guiding portion 75 , the first guiding portion 72 is an inclined edge, and the second guiding portion 75 is an arc edge.

During normal use and operation, as shown in Figure 3 to Figure 5, where:

Figure 3 shows that the second rail 2 and the first rail 1 are in a folded state, wherein the slider 5 and the guide rod 4 are pulled by the elastic component 6 and are located at the rear section of the chute 35 of the fixed seat 3, And the second rail 2 is stuck on the protruding post 52 of the slider 5 by the second engaging portion 74 of the pulling unit 7 , so that the second rail 2 is automatically positioned after receiving the first rail 1 .

Figure 4 shows that the second rail 2 is pulled out for a certain distance relative to the first rail 1, then the second rail 2 uses the second engaging part 74 of the pulling unit 7 to bring out the slider 5 and the guide rod 4 together, and the elastic assembly 6 is also stretched.

Fig. 5 shows that the second rail 2 is pulled out relative to the first rail 1 and the slider 5 reaches the stop area 352 of the chute 35, wherein the slider 5, which can slide on the guide rod 4, moves along the chute with its protruding post 52 35 and will slide into the parking area 352 and stagnate, and the second engaging part 74 of the pulling unit 7 is disengaged from the boss 52 of the slider 5 at the same time, and then (not shown))) the second rail 2 can continue Pull out to the limit.

When an abnormal situation occurs in the operation, that is, when the slider 5 is accidentally bounced back to the retreat area 351 of the chute 35 under the influence of an external force, in order to eliminate this situation, as shown in Figure 6, the second rail can be moved 2 push back, and the protrusion 52 pushed against the slider 5 by the first guide part 72 of the pulling unit 7 temporarily moves to the retreat area 351, and as shown in Figure 7, the protrusion 52 is then snapped into the pulling The first engaging portion 73 of the unit 7 , in this way, the second rail 2 can be pulled out again to bring the slider 5 to the parking area 352 of the chute 35 again.

When the second rail 2 is folded again, as shown in FIG. 8 , when the pulling unit 7 reaches the slider 5, the second guide portion 75 of the pulling unit 7 can guide the boss 52 to leave the parking area of the chute 35 352, and the boss 52 moves to the second engaging portion 74 of the pulling unit 7 at the same time, and then, as shown in Figure 9, the slider 5 is pulled back by the pulling force of the elastic component 6 and the second rail 2 is received into the first rail 1.

In addition, in another embodiment of the connection between the first rail and the elastic component in the local structure of the present invention, as shown in Figure 10, the fixed equivalent embodiment of the relevant elastic component 6a can also be provided with a second rail on the first rail 1a. The hook piece 14a is connected corresponding to the first end 61a of the elastic component 6a.

Yet another embodiment of the pulling unit of the separated block seat in the local structure of the present invention, as shown in Figure 11, the equivalent embodiment of the related pulling unit 7b can also set the pulling unit 7b as a separate The block seat is combined with the second rail 2b; when it is used, for example, the pulling unit 7b and the second rail 2b are made of different materials.

According to the above description, it can be seen that the enhancement effect and advantages of the present invention are:

a. The vertical sliding guide of the guide rod is stable, so that the slider moving laterally on it is positioned accurately relative to the chute and the pulling unit.

b. The sliding block is placed on the guide rod and under the tension of the elastic component, the frictional force of the sliding block relative to the guide rod can increase the stability of its positioning.

c. The linkage of the pulling unit corresponding to the slider and the positioning of the slider in the parking area of the chute are not easy to fail.

Although the present invention has been described with reference to the current specific embodiments, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, and other modifications can be made without departing from the spirit of the present invention. Various equivalent changes and modifications, therefore, as long as the changes and modifications to the above embodiments are within the true spirit of the present invention, they will all fall within the scope of the claims of the present application.

Claims (9)

1. A sliding rail automatic retracting device, comprising a sliding rail, a fixed seat, a guide rod, a slider, an elastic component and a pulling unit, characterized in that: The slide rail at least includes a first rail and a second rail, and the second rail passes through the first rail to telescopically slide; The fixing seat is connected to the first rail. The fixing seat has a top surface, a side surface and a bottom surface. The top surface is provided with a through slot corresponding to the bottom surface. moving area and a parking area; The guide rod is inserted into the slot; The slider is set on the guide rod for interlocking movement, and the slider is provided with a protrusion corresponding to the chute; The elastic component has a first end and a second end opposite to each other, the first end is a fixed end, and the second end is connected to the slider; The pulling unit is arranged at the rear end of the second rail, and the pulling unit includes an opening, a first guiding part, a first locking part, a second locking part and a second guiding part connected in sequence; The sliding block forms an interlocking relationship corresponding to the pulling unit, so that the second rail is automatically retracted relative to the first rail. 2. The sliding rail automatic retracting device according to claim 1, wherein the fixed seat is provided with a fixed foot and a perforation, and the first rail is respectively provided with a fixed piece and a fixed hole corresponding to the fixed foot and the perforation, and includes A fixing pin corresponds to the through hole and the fixing hole. 3 . The sliding rail automatic retracting device according to claim 1 , wherein the first rail is provided with stoppers at intervals corresponding to the width of the fixing seat. 4 . 4 . The automatic sliding rail retracting device according to claim 1 , wherein the fixing base is provided with a first hook for connecting the first end of the elastic component. 5 . The automatic retractable device for sliding rails according to claim 1 , wherein the first rail is provided with a second hook for connecting the first end of the elastic component. 6 . 6 . The sliding rail automatic retracting device according to claim 1 , wherein the sliding block is provided with a connecting column corresponding to the second end of the elastic component. 7 . 7 . The sliding rail automatic retracting device according to claim 1 , wherein the first guiding portion of the pulling unit is an inclined edge, and the second guiding portion is an arc edge. 8. The sliding rail automatic retracting device according to claim 1, wherein the pulling unit is integrally formed on the second rail. 9. The sliding rail automatic retracting device according to claim 1, wherein the pulling unit is a separate block seat combined with the second rail.

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