Extension sliding rail

Abstract

The utility model discloses an extension slide rail which comprises an outer rail, a slide block, a first slide body and a second slide body, the outer rail is of a U-shaped structure, two first slide grooves are formed in the inner side of the outer rail, two second slide grooves corresponding to the first slide grooves are formed in the outer side of the slide block, and two second limiting parts are fixedly arranged in the two second slide grooves. The outer rail and the sliding groove of the sliding block are each internally and fixedly provided with a sliding body of a cylinder structure, the structure of the extending sliding rail is simplified, the extending sliding rail is more convenient to assemble, the assembling efficiency is improved, and due to the fact that the overall structure is simple, the using reliability of the extending sliding rail is improved. After the limiting columns are detached, the sliding block slides out of the outer rail, and then the sliding body can be replaced, and the beneficial effect of being convenient to disassemble and assemble during maintenance is achieved. The protruding semicircular structure which can be embedded into the sliding groove of the outer rail in a clearance mode is arranged on the sliding block, up-and-down movement of the sliding block can be limited, then the sliding body is prevented from being disengaged from the sliding groove of the outer rail and the sliding block, and the overload protection function is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of slide rail technology, and in particular relates to an extension slide rail. Background Technology

[0002] The basic function of a sliding rail is guidance. In the automotive industry, sliding rails have expanded into new applications in products requiring relative sliding, such as storage boxes, glove boxes, car refrigerators, armrests, leg rests, and headrests. With the increasing popularity of electric vehicles, users have higher requirements for the feel, force, and noise level of the sliding mechanism. Existing extended sliding rails use a ball-bearing sliding structure, which suffers from low assembly efficiency due to the large number of parts and low reliability due to structural complexity. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an extension slide rail that is simple to assemble and reliable to use.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: an extension slide rail, including an outer rail, a slider, a first sliding body, and a second sliding body. The outer rail has a U-shaped structure. Two first sliding grooves are provided on the inner side of the outer rail. Two second sliding grooves corresponding to the first sliding grooves are provided on the outer side of the slider. Two first limiting parts are fixedly provided in the first sliding grooves, forming a first accommodating limiting area between the two first limiting parts. The first sliding body is axially limited within the first accommodating limiting area. Two second limiting parts are fixedly provided in the two second sliding grooves, forming a second accommodating limiting area between the two second limiting parts. The second sliding body is axially limited within the second accommodating limiting area. The slider is installed in the outer rail. The first sliding body is slidably fitted in the second sliding grooves, and the second sliding body is slidably fitted in the second sliding grooves.

[0005] Preferably, the longitudinal sections of the first and second slides are both set as arc surface structures, and the first and second sliding bodies are both set as cylindrical structures that fit into the arc surface structures.

[0006] Preferably, a limiting post is fixedly installed on the left end of the outer rail, and a U-shaped groove that cooperates with the limiting post is provided on the left end of the slider.

[0007] Preferably, two first limiting parts are located at the right end of the first groove of the outer rail, and two second limiting parts are located at the left end of the second groove of the slider.

[0008] Preferably, the first limiting part is a first stop block integrally formed and fixedly disposed in the first slide groove. The part of the first stop block that extends beyond the first slide groove is configured as a semi-circular structure that cooperates with the second slide groove. The gap of the semi-circular structure of the first stop block is embedded in the second slide groove.

[0009] Preferably, the second limiting part is a second stop block integrally formed and fixedly disposed in the second slide groove. The part of the second stop block that extends beyond the second slide groove is configured as a semi-circular structure that cooperates with the first slide groove. The gap of the semi-circular structure of the second stop block is embedded in the first slide groove.

[0010] Preferably, the first limiting part is configured as a first pin, and the outer rail is provided with a first pin hole that communicates with the first sliding groove, and the first pin is fixedly installed in the first pin hole.

[0011] Preferably, the outer second limiting part is a third stop block integrally formed and fixedly installed in the second slide groove. The part of the third stop block that extends beyond the second slide groove is configured as a semi-circular structure that cooperates with the first slide groove. The semi-circular structure of the third stop block is inserted into the first slide groove. The inner second limiting part is configured as a second pin. The slider is provided with a second pin hole that communicates with the second slide groove. The second pin is fixedly installed in the second pin hole.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] 1. A cylindrical sliding body is fixedly installed in the groove of the outer rail and the slider, which simplifies the structure of the extension rail, makes the assembly of the extension rail more convenient, improves the assembly efficiency, and improves the reliability of the extension rail during use due to the simple overall structure.

[0014] 2. After removing the limit post, the slider can be slid out from the outer rail to replace the slider body, which has the advantage of convenient disassembly and assembly during maintenance.

[0015] 3. By setting a protruding semi-circular structure on the slider that can be intermittently embedded in the outer rail groove, the up and down movement of the slider can be restricted, thereby preventing the slider from falling out of the outer rail and the slider groove, and providing overload protection.

[0016] 4. When the slider slides out, the second stop on the slider contacts the first stop on the outer rail to limit its movement, or the sliding body contacts the pin to limit its movement. Both of these methods have the advantage of high structural strength. Compared with the transmission method of setting protrusions in the outer rail and / or slider bending material to limit the slider from sliding out of the outer rail, this application can avoid the problem of the slider falling out when sliding outward due to the deformation of the material protrusions on the outer rail and / or slider. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the slider sliding into the outer rail in embodiment (1) of this utility model.

[0019] Figure 2This is a perspective view of the slider sliding out of the outer rail in embodiment (1) of this utility model.

[0020] Figure 3 This is a perspective view of the first stop block set on the outer rail in embodiment (I) of this utility model.

[0021] Figure 4 This is a perspective view of the slider with a second stop block set on it in embodiment (I) of this utility model.

[0022] Figure 5 Left view of embodiment (I) of this utility model.

[0023] Figure 6 yes Figure 5 A sectional view along the AA direction.

[0024] Figure 7 This is a perspective view of the slider sliding into the outer rail in embodiment (II) of this utility model.

[0025] Figure 8 This is a perspective view of the slider sliding out of the outer rail in embodiment (II) of this utility model.

[0026] Figure 9 This is a left view of embodiment (II) of this utility model.

[0027] Figure 10 yes Figure 9 BB-direction cross-section

[0028] Figure 11 This is a perspective view of the outer rail with a first pin hole in embodiment (II) of this utility model.

[0029] Figure 12 This is a perspective view of the first sliding body installed on the outer rail in embodiment (II) of this utility model.

[0030] Figure 13 This is a perspective view of the slider in embodiment (II) of this utility model.

[0031] Figure 14 This is a perspective view of the second slider installed on the slider in embodiment (II) of this utility model. Detailed Implementation

[0032] The present invention will now be described in detail with reference to specific embodiments:

[0033] like Figures 1 to 14An extended slide rail is shown, comprising an outer rail 1, a slider 2, a first slider 4, and a second slider 5. The outer rail 1 has a U-shaped structure. Two first slide grooves 11 are provided on the inner side of the outer rail 1. Two second slide grooves 21 corresponding to the first slide grooves 11 are provided on the outer side of the slider 2. Two first limiting parts are fixedly provided in the first slide grooves 11, forming a first accommodating limiting area between the two first limiting parts. The first slider 4 is axially limited within the first accommodating limiting area to restrict axial movement of the first slider 4 relative to the first limiting parts. Two second limiting parts are fixedly provided in the two second slide grooves 21, forming a second accommodating limiting area between the two second limiting parts. The second slider 5 is axially limited within the second accommodating limiting area to restrict axial movement of the second slider 5 relative to the second limiting parts. The slider 2 is installed in the outer rail 1, and the first slider 4 and the second slider 5 are slidably fitted in the second slide grooves 21.

[0034] The longitudinal sections of the first slide groove 11 and the second slide groove 21 are both set as arc surface structures. The first sliding body 4 and the second sliding body 5 are both set as cylindrical structures that fit with the arc surface structure. The longitudinal sections of the first slide groove 11 and the second slide groove 21 are preferably set as arc surface structures of 1 / 2 circle, so as to play a better role in preventing the first sliding body 4 and the second sliding body 5 of the cylindrical structure from falling off and limiting their movement.

[0035] The left end of the outer rail 1 is fixedly installed with a limiting post 3, and the left end of the slider 2 is provided with a U-shaped groove 31 that cooperates with the limiting post 3. The limiting post 3 can be placed in the U-shaped groove 31 to prevent the slider 2 from coming off the left end of the outer rail 1.

[0036] Two first limiting parts are set at the right end of the first slide groove 11 of the outer rail 1, and two second limiting parts are set at the left end of the second slide groove 21 of the slider 2, so that the maximum sliding distance of the extended slide rail slider 2 reaches the maximum.

[0037] Example 1:

[0038] like Figures 1 to 6 The first limiting part shown is a first stop block 6 integrally formed and fixedly installed in the first slide groove 11. The part of the first stop block 6 that extends beyond the first slide groove 11 is set as a semi-circular structure that cooperates with the second slide groove 21. The semi-circular structure of the first stop block 6 is embedded in the second slide groove 21, that is, there is a gap between the semi-circular structure of the first stop block 6 and the inner wall of the second slide groove 21, so as to avoid affecting the sliding of the slider 2.

[0039] The second limiting part is a second stop 7 integrally formed and fixedly installed in the second slide groove 21. The part of the second stop 7 that extends beyond the second slide groove 21 is set as a semi-circular structure that cooperates with the first slide groove 11. The semi-circular structure of the second stop 7 is embedded in the first slide groove 11, that is, there is a gap between the semi-circular structure of the second stop 7 and the inner wall of the first slide groove 11, so as to avoid affecting the sliding of the slider 2.

[0040] The semi-circular structure of the first stop block 6 cooperates with the second slide groove 21, and the semi-circular structure of the second stop block 7 cooperates with the first slide groove 11 to restrict the vertical movement of the slider 2, preventing the first slider 4 and the second slider 5 from coming out of the first slide groove 11 and the second slide groove 21. The first stop block 6 and the second stop block 7 are integrally formed and fixed, which has the advantages of high structural strength and resistance to deformation.

[0041] When slider 2 slides on outer rail 1, first slider 4 is fixed in first groove 11 of outer rail 1, and second slider 5 slides synchronously with slider 2 in first groove 11. When second stop 7 on slider 2 contacts first stop 6 on outer rail 1, slider 2 slides out to limit position.

[0042] Example (II):

[0043] like Figures 7 to 14 The first limiting part shown is a first pin 8, and the outer rail 1 is provided with a first pin hole 12 that communicates with the first slide groove 11. The first pin 8 is fixedly installed in the first pin hole 12.

[0044] The outer second limiting part is a third stop 10 integrally formed and fixedly installed in the second slide groove 21. The part of the third stop 10 that extends beyond the second slide groove 21 is set as a semi-circular structure that cooperates with the first slide groove 11. The semi-circular structure of the third stop 10 is gapped into the first slide groove 11, that is, there is a gap between the semi-circular structure of the third stop 10 and the inner wall of the first slide groove 11 to avoid affecting the sliding of the slider 2. The inner second limiting part is set as a second pin 9. The slider 2 is provided with a second pin hole 22 that communicates with the second slide groove 21. The second pin 9 is fixedly installed in the second pin hole 22. The semi-circular structure of the third stop 10 cooperates with the first slide groove 11 to restrict the vertical movement of the slider 2, preventing the first sliding body 4 and the second sliding body 5 from coming out of the first slide groove 11 and the second slide groove 21. The use of the first pin 8 and the first pin hole 12 for installation and the second pin 9 and the second pin hole 22 for installation has the advantage of easy processing.

[0045] When slider 2 slides on outer rail 1, first slider 4 is fixed in first groove 11 of outer rail 1, and second slider 5 slides synchronously with slider 2 in first groove 11. When first slider 4 and second slider 5 contact first pin 8 and second pin 9 respectively, slider 2 slides out to limit position.

Claims

1. An extension slide rail, characterized in that: The system includes an outer rail (1), a slider (2), a first sliding body (4), and a second sliding body (5). The outer rail (1) has a U-shaped structure. Two first sliding grooves (11) are provided on the inner side of the outer rail (1). Two second sliding grooves (21) corresponding to the first sliding grooves (11) are provided on the outer side of the slider (2). Two first limiting parts are fixedly provided in the first sliding grooves (11), and a first accommodating limiting area is formed between the two first limiting parts. The first sliding body (4) is axially limited within the first accommodating limiting area. Two second limiting parts are fixedly provided in the two second sliding grooves (21), and a second accommodating limiting area is formed between the two second limiting parts. The second sliding body (5) is axially limited within the second accommodating limiting area. The slider (2) is installed in the outer rail (1). The first sliding body (4) is slidably fitted in the second sliding grooves (21), and the second sliding body (5) is slidably fitted in the second sliding grooves (21).

2. The extension slide rail according to claim 1, characterized in that: The longitudinal sections of the first slide (11) and the second slide (21) are both set as arc surface structures, and the first sliding body (4) and the second sliding body (5) are both set as cylindrical structures that fit with the arc surface structure.

3. The extension slide rail according to claim 2, characterized in that: The left end of the outer rail (1) is fixedly installed with a limiting post (3), and the left end of the slider (2) is provided with a U-shaped groove (31) that cooperates with the limiting post (3).

4. The extension slide rail according to claim 3, characterized in that: Two first limiting parts are set at the right end of the first groove (11) of the outer rail (1), and two second limiting parts are set at the left end of the second groove (21) of the slider (2).

5. The extension slide rail according to claim 4, characterized in that: The first limiting part is a first stop (6) integrally formed and fixedly installed in the first slide groove (11). The part of the first stop (6) that extends beyond the first slide groove (11) is set as a semi-circular structure that cooperates with the second slide groove (21). The gap of the semi-circular structure of the first stop (6) is embedded in the second slide groove (21).

6. The extension slide rail according to claim 4, characterized in that: The second limiting part is a second stop (7) integrally formed and fixedly installed in the second slide groove (21). The part of the second stop (7) that extends beyond the second slide groove (21) is set as a semi-circular structure that cooperates with the first slide groove (11). The gap of the semi-circular structure of the second stop (7) is embedded in the first slide groove (11).

7. The extension slide rail according to claim 4, characterized in that: The first limiting part is set as a first pin (8), and the outer rail (1) is provided with a first pin hole (12) that communicates with the first slide groove (11). The first pin (8) is fixedly installed in the first pin hole (12).

8. The extension slide rail according to claim 4, characterized in that: The outer second limiting part is a third stop (10) integrally formed and fixedly installed in the second slide groove (21). The part of the third stop (10) that extends beyond the second slide groove (21) is set as a semi-circular structure that cooperates with the first slide groove (11). The semi-circular structure of the third stop (10) is inserted into the first slide groove (11). The inner second limiting part is set as a second pin (9). The slider (2) is provided with a second pin hole (22) that communicates with the second slide groove (21). The second pin (9) is fixedly installed in the second pin hole (22).

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