Slide rail assembly

Abstract

The invention discloses a slide rail assembly, which is a mechanism for easily positioning the slide rail and preventing the slide rail of a server chassis from slipping under inappropriate pulling force.

Description

Technical Field

[0001] A slide rail positioning device uses the elastic clamping ability of double stoppers to achieve a stop state for the slide rail to be opened and closed when the slide rail is in displacement state. Background Art

[0002] For example, US Patent Publication No. US 9,939,014 B2 discloses a slide rail assembly. The slide rail has a positioning member disposed on a stopper disposed on an outer rail relative to an inner rail, the stopper has a positioning space, and when the inner rail moves to a predetermined positioning position, the positioning member is confined within the space formed by the stopper, and the two rails are in a stopped state, wherein the stopper and the positioning member are respectively installed on the outer rail and the inner rail, so that the outer rail and the inner rail of the slide rail assembly can achieve the positioning effect.

[0003] The positioning device of the previous case design needs to install a positioning member to be fixed on the outer rail, and the stopper is fixed on the inner rail, which will definitely reduce the space used for the mechanism design. Therefore, the thinning design of the slide rail and further optimization are considered to avoid the slide rail failing to achieve the positioning function. Therefore, how to solve the above-mentioned conventional problems and deficiencies is the subject that the relevant industry is eager to research and develop. Summary of the invention

[0004] The present invention can fasten another rail member of the slide rail assembly when one rail member of the slide rail assembly is displaced to a predetermined state; on the other hand, it can prevent the slide rail of the server chassis from slipping under inappropriate pulling force, causing damage to personnel and the slide rail.

[0005] According to the characteristics of the present invention, a slide rail assembly includes: a first rail, a second rail including a second rail first part and a second rail second part, and a stop structure arranged on the second rail. The second rail can be displaced relative to the first rail; the stop structure includes a first working piece and a second working piece, wherein the first rail has a latch hole as a latch feature, and the latch hole includes a latch hole front end and a latch hole rear end; when the second rail is displaced to a predetermined position relative to the first rail, the first working piece of the stop structure is elastically rebounded and snapped at the front end of the latch hole of the first rail to form a stop state, and the second working piece of the stop structure is also elastically rebounded and snapped at the rear end of the latch hole of the first rail to form a stop state, forming a two-way stop, having a double positioning effect, to limit the displacement of the first rail.

[0006] Preferably, the first working piece further comprises a bent spring sheet as a first limiting feature, which acts on a latch hole of the first rail to form a stopper.

[0007] Preferably, the second working piece further comprises a bent spring sheet as a second limiting feature, which acts on a latching feature of the first rail to form a stopper.

[0008] Preferably, the first working piece is arranged and fixed to the second portion of the second rail relative to the second working piece being arranged and fixed to the first portion of the second rail.

[0009] Preferably, the first working piece is arranged to overlap the second working piece, and the second working piece can lean against and support the first working piece.

[0010] According to another feature of the present invention, a slide rail assembly includes a first rail having a latch hole and a second rail including a stop structure. The second rail can be displaced relative to the first rail; the stop structure includes a first working piece and a second working piece; the first working piece further includes a positioning portion, a guide portion including a guide section, and a connecting portion including a connecting section. When the stop structure is pressed and displaced from the opening direction to the folding direction, the guide section of the guide portion of the first working piece abuts against the first rail, causing the first working piece to be elastically compressed for a primary pre-compression. When still displaced in the folding direction, the positioning portion of the first working piece abuts against the first rail, causing the first working piece to be elastically deformed and at the same time presses against the second working piece for a secondary pre-compression, which is a labor-saving operation.

[0011] Preferably, only the first working piece is elastically deformed to press against the second working piece.

[0012] Preferably, the positioning portion of the first working piece further includes a convex portion, which is a first guide feature and a second guide feature. The first guide feature can keep the second rail at a distance from the first rail and displace the second rail by point contact with the first surface of the first rail, thereby reducing the relative friction area between the first rail and the second rail, improving the operating force of the slide rail displacement and reducing noise.

[0013] Preferably, the height of the first guide feature of the first working piece is higher than the height of the second guide feature, and the height of the second guide feature is higher than the height of the second working piece.

[0014] Preferably, the guide section width of the guide portion of the first working piece is greater than the connection section width of the connection portion of the first working piece, so that the pressing force for elastic deformation of the first working piece is reduced, thereby achieving a labor-saving operation structure.

[0015] According to another feature of the present invention, a slide rail assembly includes a first rail further including a latch feature, a second rail, the second rail can be displaced relative to the first rail, and a stop structure. The stop structure includes a first working piece and a second working piece arranged and fixed on the second rail; the second working piece has an elastic arm, and a spring sheet on one side of the elastic arm is bent upward to form a groove to prevent the user's hand from being scratched when operating the stop structure.

[0016] Preferably, the groove portion of the elastic sheet on one side of the elastic arm of the second working member, which is bent upward, can act on a latching feature of the first rail to form a stopper.

[0017] Preferably, the groove of the elastic arm of the second working piece can reduce the gap between the first working piece and the latch feature, and also reduce the clearance impact sound between the stop structure and the latch hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a three-dimensional appearance diagram of the stop structure of the present invention.

[0020] Figure 2 It is a partial illustration of the three-dimensional appearance of the stop structure of the present invention.

[0021] Figure 3 This is a three-dimensional appearance diagram of the stop structure from another perspective of the present invention.

[0022] Figure 4 This is a partial illustration of the three-dimensional appearance of the stop structure from another perspective of the present invention.

[0023] Figure 5a 5c is a perspective exploded view of the present invention.

[0024] Figure 6a~6d FIG. 2 is a diagram showing the displacement of the stop structure of the present invention between the first rail and the second rail.

[0025] Figure 7 It is a partial cross-sectional view of the stop structure of the present invention between the first rail and the second rail.

[0026] Figure 8 It is a partial cross-sectional view of the stop structure of the present invention in the opening direction.

[0027] Fig. 9 It is a partial cross-sectional diagram of the first rail and the second rail of the present invention in a blocking state.

[0028] Fig.10 It is a partial cross-sectional view of the pressing stop structure of the present invention when it moves in the opening direction.

[0029] Fig.11 It is a partial cross-sectional view of the stop structure of the present invention having been separated from the latch hole.

[0030] Fig.12 It is a partial cross-sectional view of the stop structure of the present invention when it moves in the folding direction.

[0031] Fig.13 It is a partial cross-sectional view of the stop structure and the first rail in the actuating state of the present invention.

[0032] Fig.14 It is a partial illustration of the lengths of the first working piece and the second working piece of the present invention.

[0033] Fig.15 It is a partial illustration of the first working piece width of the present invention.

[0034] Fig.16 It is a partial illustration of the height of the first working piece and the second working piece of the present invention.

[0035] 1. Slide rail assembly; 2. First rail; 3. Second rail; 4. First working piece; 5. Second working piece; 6. Clamp hole; 7. Stop structure; 21. First surface of first rail; 31. First part of second rail; 32. Second part of second rail; 33. Second rail travel hole; 331. Front end of second rail travel hole; 332. Rear end of second rail travel hole; 34. Second rail connecting part; 41. Positioning part; 411. First guiding feature; 412. Second guiding feature; 413. First limiting feature; 42. Guide part; 421. Guide section; 43. Connecting part; 431. Connecting section; 432. Connecting port; 51. Elastic arm; 511. First slot; 512. Second slot; 513. Elastic surface; 514. Elastic section; 515. Second limiting feature; 516. Elastic bottom surface; 52. Fixed portion; 521 Fixed portion opening; 61. Front end of latch hole; 62. Rear end of latch hole; R: folding direction; E: opening direction; S1: compression state; S2: stop state; F: force application; L: length of positioning portion; L1: length of first slot; L2: length of second slot; W: width of guide section; W1: width of connecting section; H1: height of first guide feature; H2: height of second guide feature; H3: height of first slot. DETAILED DESCRIPTION

[0036] like Figures 1 to 4 As shown, the present invention is provided with a slide rail assembly 1, including a first rail 2, a second rail 3 and a stop structure 7 arranged on the second rail 3, and the second rail 3 can be displaced relative to the first rail 2. Among them, the first rail 2 has a latch hole 6 as a latch feature, and has a latch hole front end 61 and a latch hole rear end 62. The stop structure 7 includes a first working piece 4 and a second working piece 5. In the stop state S2, a side bent spring sheet of the positioning portion 41 of the first working piece 4 is a first limiting feature 413, which abuts against the latch hole front end 61 of the latch hole 6 of the first rail 2 to form a stop. At the same time, the elastic arm 51 of the second working piece 5 is connected to the elastic section 514, which abuts against the latch hole rear end 62 of the latch hole 6 of the first rail 2 to form a stop. The elastic piece of the groove portion of the elastic arm 51 has a second limiting feature 515, and the elastic arm 51 of the second working piece 5 presses upward against the positioning portion 41 of the first working piece 4, so that the stop structure 7 can be reliably rebounded into the latch hole 6 of the first rail 2, forming a double stop. Figure 2As shown, the positioning portion 41 of the first working piece 4 includes a first guide feature 411 and a second guide feature 412 which are a stamped convex portion, and a bent spring sheet on one side of the positioning portion 41 is a first limiting feature 413. Figure 3 to Figure 4 As shown, in the stop state S2, the elastic arm 51 of the second working member 5 is supported by the positioning portion 41 of the first working member 4. When the stop state S2 is released, the positioning portion 41 of the first working member 4 is pressed to move downward toward the second rail travel hole 33, and the stop structure 7 can be greatly lowered so that it can smoothly leave the stop state S2.

[0037] like Figure 5a As shown in FIG. 5 c , it is a three-dimensional exploded view of the present invention, in which the slide rail assembly 1 includes a first rail 2, a second rail 3, and a stop structure 7, and the stop structure 7 includes a first working piece 4 and a second working piece 5, and the second rail 3 can be displaced relative to the first rail 2; the first rail 2 includes a first rail first surface 21, a latch hole 6 as a latch feature, and the latch hole 6 has a latch hole front end 61 and a latch hole rear end 62; the second rail 3 has a second rail first portion 31, a second rail second portion 32, a second rail travel hole 33, and a second rail connecting portion 34, wherein the second rail travel hole 33 further has a second rail travel hole front end 331 and a second rail travel hole rear end 332; the stop structure 7 is arranged and fixed on the second rail 3, the first working piece 4 of the stop structure 7 is superimposed on the second working piece 5, and the fixing portion 52 of the second working piece 5 is fixed to the second rail first portion 31 relative to the guide portion 42 of the first working piece 4 fixed to the second rail second portion 32.

[0038] As shown in Figure 5b, the first working piece 4 has a roughly bow-shaped appearance. The first working piece 4 includes the guide portion 42 and the connecting portion 43 connected by the positioning portion 41. The first limiting feature 413 is a bent spring sheet on one side of the positioning portion 41, wherein the positioning portion 41 has a stamped convex portion as a first guide feature 411 and a second guide feature 412. The guide portion 42 is arranged to fix the second rail second portion 32. The guide portion 42 is connected to a guide section 421. The connecting portion 43 has a connecting section 431 and a connecting port 432. The connecting port 432 is fixedly arranged on the second rail connecting portion 34.

[0039] As shown in Fig. 5c, the second working piece 5 has a cantilever appearance. The fixing portion 52 of the second working piece 5 is arranged to be fixed to the first portion 31 of the second rail, and the fixing portion 52 has a fixing portion opening 521. The fixing portion 52 is bent and connected to the elastic arm 51 by an elastic section 514 to adjust the stress state of the elastic arm 51. The elastic arm 51 of the second working piece 5 has an elastic surface 513, and its bottom surface is an elastic bottom surface 516. The elastic sheets on both sides of the elastic surface 513 are bent upward and inward to form a first groove 511 and a second groove 512, wherein the elastic sheet on one side of the groove of the elastic arm 51 is a second limiting feature 515.

[0040] like Figure 6a As shown, in the slide rail assembly 1, the stop structure 7 is in a compressed state S1, and is displaced toward the opening direction E between the first rail 2 and the second rail 3; Figure 6b The stop structure 7 of the present invention is a schematic diagram showing the stop state S2 formed between the second rail 3 and the first rail 2; Figure 6c It is a schematic diagram of the stop structure 7 of the present invention moving in the opening direction E from the release of the stop state S2; Figure 6d , which is a diagram of the stop structure 7 of the present invention moving from the opening direction E to the closing direction R.

[0041] like Figure 7 As shown, in the slide rail assembly 1, when the stop structure 7 is in the compressed state S1, the elastic arm 51 of the second working member 5 is elastically deformed by the positioning portion 41 of the first working member 4 and pressed downward, and displaced between the first rail 2 and the second rail 3. Among them, the first guide feature 411 of the positioning portion 41 of the first working member 4 of the second rail 3 contacts the first surface 21 of the first rail, so that the second rail 3 maintains a certain distance from the first rail 2 and displaces with point contact on the first rail 2. The first guide feature 411 is a convex portion, which is used to reduce the relative friction area between the first rail 2 and the second rail 3, thereby improving the operating force of the slide rail displacement and reducing the noise effect.

[0042] like Figure 8 As shown, in the slide rail assembly 1, the stop structure 7 will be transformed from the compressed state S1 to the stop state S2, the second rail 3 is displaced in the opening direction E, the first guide feature 411 of the first working piece 4 is away from the first surface 21 of the first rail, and the guide portion 42 of the first working piece 4 has a guide section 421, the guide section 421 releases elastic force, so that the first limiting feature 413 of the positioning portion 41 of the first working piece 4 is toward the front end 61 of the latch hole 6 of the latch hole 6, wherein the first limiting feature 413 is a bent spring sheet. The second guide portion 412 of the first working piece 4 continues to abut against the first surface 21 of the first rail, so that the stop mechanism 7 has enough time to smoothly rebound and latch to the latch hole 6 of the first rail 2, and the latch hole 6 is a latch feature.

[0043] like Fig. 9As shown, in the slide rail assembly 1, the stop structure 7 is in the stop state S2, and the first working piece 4 and the second working piece 5 are snapped into the latch hole 6 of the first rail 2. The first limiting feature 413 of the positioning portion 41 of the first working piece 4 is snapped into the latch hole 6 by a guide section 421, and at the same time, the first limiting feature 413 is in a primary stop state toward the front end 61 of the latch hole 6, wherein the first limiting feature 413 is a bent spring sheet. The second limiting feature 515 of the elastic arm 51 of the second working piece 5 is snapped into the latch hole 6 by the elastic force of an elastic section 514, and at the same time, the second limiting feature 515 is in a secondary stop state toward the rear end 62 of the latch hole 6, wherein the second limiting feature 515 is a side groove spring sheet, forming a two-way stop, which can improve the positioning effect.

[0044] like Fig.10 As shown, the stop structure 7 changes from the stop state S2 to the compression state S1, and moves in the opening direction E. When the force F is applied to press the stop mechanism 7 to unlock, it can be pressed down to the second rail travel hole 33, and can be greatly displaced downward. Among them, the positioning part 41 of the first working piece 4 is pressed, so that the positioning part 41 is displaced downward and the elastic arm 51 of the second working piece 5 is pressed down at the same time, away from the latch hole 6 of the first rail 2. The first guide feature 411 of the positioning part 41 of the first working piece 4 abuts against the first rail 2, so that the first working piece 4 is elastically compressed and pre-pressed once, which is a labor-saving operation. Among them, the first working piece 4 has a positioning part 41 with a convex part, and the convex part has a first guide feature 411, which can keep a certain distance between the second rail 3 and the first rail 2, so that the second rail 3 can continue to move in an opening direction E. The first working piece 4 is elastically deformed and presses the second working piece 5 for secondary pre-pressing, so that the second rail 3 can be displaced relative to the first rail 2, which is a labor-saving operation.

[0045] like Fig.11 As shown, in the slide rail assembly 1, the stop structure 7 is in the compressed state S1, the first guide feature 411 of the positioning portion 41 of the first working piece 4 returns to the compressed state S1 and contacts the first surface 21 of the first rail, and the elastic arm 51 of the second working piece 5 is elastically deformed by being abutted and pressed down by the positioning portion 41 of the first working piece 4.

[0046] like Fig.12 As shown, in the slide rail assembly 1, the stop structure 7 is displaced from the opening direction E to the folding direction R, and the guide section 421 of the guide portion 42 of the first working piece 4 abuts against the first rail 2, causing the first working piece 4 to be elastically compressed for a pre-compression, and at the same time, the height of the second guide feature 412 of the positioning portion 41 of the first working piece 4 is lowered.

[0047] like Fig.13As shown, in the slide rail assembly 1, when the stop structure 7 continues to move in a folding direction R, the second guide feature 412 of the positioning portion 41 of the first working piece 4 abuts against the first rail 2, and the first working piece 4 is elastically deformed while pressing the second working piece 5 for secondary pre-compression. The second guide feature 412 is a convex portion, which makes it easy for the second rail 3 to be folded to the first rail 2, which is a labor-saving operation. The first working piece 4 has a positioning portion 41 with a convex portion, and the convex portion has a first guide feature 411, which can keep a certain distance between the second rail 3 and the first rail 2, so as to point-contact the first rail 2 when it moves in the folding direction R. In addition, the first guide feature 411 and the second guide feature 412 can be arc surfaces or inclined surfaces, which is a labor-saving operation structure.

[0048] like Fig.14 As shown, the length L of the positioning portion of the first working piece 4 is longer than the first groove length L1 of the elastic arm 51 of the second working piece 5 and the second groove length L2 of the elastic arm 51 of the second working piece 5, which can reduce the impact sound caused by the clearance between the stop structure 7 and the latch hole 6.

[0049] like Fig.15 As shown, the first working piece 4 is roughly bow-shaped in appearance (see Fig.16 ), and overlapped with the second working piece 5. The guide section width W of the guide portion 42 of the first working piece 4 is greater than the connecting section width W1 of the connecting portion 43 of the first working piece 4, which is a labor-saving operation structure. When the force F is pressed on the first working piece 4 to generate a pressing force of elastic deformation, the width design of the first working piece 4 can reduce the force F, which is a labor-saving operation structure.

[0050] like Fig.16 As shown, the first groove height H3 of the elastic arm 51 of the second working piece 5 is lower than the first guide feature height H1 and the second guide feature height H2 of the positioning portion 41 of the first working piece 4, so that the first guide feature 411 can be point-contacted and displaced with the first surface 21 of the first rail.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A slide rail assembly, characterized in that: Include: A first rail having a latch hole, wherein the latch hole includes a latch hole front end and a latch hole rear end; a second rail, the second rail having a second rail travel hole, a second rail first portion, a second rail second portion and a second rail connecting portion, the second rail travel hole connecting the second rail first portion and the second rail second portion, the second rail connecting portion being located at the second rail first portion, and the second rail being displaceable relative to the first rail; and A stop structure, the stop structure is fixed to the second rail, the stop structure includes a first working piece and a second working piece, and the first working piece has a guide portion, a positioning portion and a connecting portion, the guide portion is fixed to the second portion of the second rail, the connecting portion and the guide portion are connected with the positioning portion, and the connecting portion has a connecting port and is fixed to the second rail connecting portion, and a spring sheet on one side of the positioning portion is bent inwardly to form a first limiting feature, the first limiting feature abuts against the front end of the latch hole, and the second working piece has a fixing portion and an elastic arm, the fixing portion is fixed to the first portion of the second rail, and the The fixing portion extends and bends to be connected to the elastic arm, the elastic arm has a groove portion, the groove portion has a second limiting feature, the second limiting feature abuts against the rear end of the latch hole, and the second rail first portion and the second rail second portion are used to fix the second working piece and the first working piece respectively, so that the elastic arm of the second working piece abuts against the positioning portion of the first working piece, the first working piece is superimposed on the second working piece, the elastic arm of the second working piece has an elastic surface, and its bottom surface is an elastic bottom surface, and the elastic sheets on both sides of the elastic surface are bent upward and inward to form a groove portion, wherein the elastic sheets on both sides of the elastic surface of the elastic arm are the second limiting feature; By this, when the second rail is displaced to a predetermined position relative to the first rail, the positioning portion of the first working piece of the stop structure is elastically rebounded and buckled in the locking hole of the first rail to be in the first limiting state, and the elastic arm of the second working piece of the stop structure is also elastically rebounded and buckled in the locking hole of the first rail to be in the second limiting state, forming a two-way stop to limit the displacement of the first rail, press the positioning portion of the first working piece, so that the first working piece and the second working piece move toward the travel hole of the second rail at the same time, and let the positioning portion of the first working piece and the elastic arm of the second working piece move away from the locking hole of the first rail at the same time, release the stop state, and allow the second rail to movably displace on the first rail.

2. The slide rail assembly according to claim 1, characterized in that: The first working piece is made by integral stamping, and the positioning portion of the first working piece includes a protrusion, the protrusion has a first guide feature and a second guide feature, the first guide feature has a first guide feature height and the second guide feature has a second guide feature height, and the guide portion of the first working piece includes a guide section, which abuts against the first rail.

3. The slide rail assembly according to claim 2, characterized in that: The first guiding feature and the second guiding feature are arc surfaces or inclined surfaces.

4. The slide rail assembly according to claim 2, characterized in that: The second working piece is made by integral stamping, and the height of the groove of the elastic arm of the second working piece is lower than the first guide feature height and the second guide feature height of the positioning portion of the first working piece.

5. The slide rail assembly according to claim 4, characterized in that: The fixing portion of the second working piece includes a fixing portion opening, and the fixing portion opening forms a space so that the second rail connecting portion can fix the connecting portion of the first working piece.

6. The slide rail assembly according to claim 2, characterized in that: The guide portion of the first working piece includes a guide section, the guide section is folded against the first rail, and the guide section width of the guide portion is greater than the connecting section width of the connecting portion.

7. The slide rail assembly according to claim 1, characterized in that: The groove of the second workpiece has a first groove and a second groove, and the first groove and the second groove have a first groove length and a second groove length, and the first groove length and the second groove length of the first groove and the second groove are respectively shorter than the positioning portion length of the first workpiece.

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