Cabinet slide rail

Abstract

The utility model discloses a cabinet slide rail, and one torsional spring is connected between the one end of the extension part away from the pin shaft and the second track section, so that the rotatable clamping part keeps the first state that the second flanging part on one side of the extension part is close to the second track section, the extension part has a clamping part that is bent to the first strip-shaped body direction through the first through hole arranged on the second strip-shaped body, when the clamping part is in the first state, an acute angle alpha 1 is formed between the obliquely arranged clamping part and the second flanging part close to the extension part, an inclined groove with the same oblique angle as the clamping part is arranged on the clamping protrusion in the accommodating area, when the second track section moves to the rear end position, the clamping part is embedded in the inclined groove, a second through hole is arranged on the second strip-shaped body of the second track section and at the rear side of the pin shaft, the rear end of a front pushing block movably arranged in the second through hole is connected with a push rod movably arranged in the accommodating area, and the front end of the front pushing block is used for pushing and abutting with the rear end of the clamping part.

Description

Technical Field

[0001] This utility model relates to a cabinet slide rail, belonging to the field of liquid-cooled cabinet technology. Background Technology

[0002] Current three-section slide rails consist of an outer slide rail, a middle slide rail, and an inner slide rail. The outer slide rail is fixed to the rack, the inner slide rails are fixed to both sides of the computing or power supply tray, and the middle slide rail, acting as a support rail, is positioned between the outer and inner slide rails to extend the tray's range of motion. The inner and middle slide rails can slide back and forth relative to each other along the outer slide rail, allowing the tray to be freely pulled out or retracted. However, existing liquid-cooled cabinet slide rails suffer from instability after being pulled out and difficulty in retraction. Summary of the Invention

[0003] The purpose of this utility model is to provide a cabinet slide rail that can maintain the stability of the positional relationship between the second track section and the first track section when the second track section is pulled out to the outside of the first track section, and also facilitates the retraction of the second track section into the first track section, thereby improving the convenience and stability of use.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a cabinet slide rail, comprising: a first track section and a second track section that slides with the first track section. The first track section includes a first strip-shaped body and first flanges respectively disposed on both sides of the first strip-shaped body along its length direction. The second track section, correspondingly embedded in the first track section, includes a second strip-shaped body and second flanges respectively disposed on both sides of the second strip-shaped body along its length direction. The second strip-shaped body of the second track section has an arched portion extending along its length direction and away from the first strip-shaped body, thereby forming an accommodating area between the arched portion and the first strip-shaped body of the first track section. A snap-fit ​​component is rotatably mounted on the front section of the second track section on the side opposite to the first strip-shaped body of the arched portion via a pin. The rear section of the first strip body has a snap-fit ​​protrusion on the surface facing the arched part, which corresponds to the snap-fit ​​component. The front end face of the snap-fit ​​component has an extension portion away from the pin. The end of the extension portion away from the pin is connected to the second track section by a torsion spring, so that the rotatable snap-fit ​​component is kept in a first state where the extension portion is close to the second flange portion on the side of the second track section. The extension portion has a snap-fit ​​portion that bends towards the first strip body through a first through hole opened on the second strip body. When the snap-fit ​​component is in the first state, the snap-fit ​​portion that is inclined and the second flange portion close to the extension portion form an acute angle α1. The snap-fit ​​protrusion located in the receiving area has a groove with the same inclination angle as the snap-fit ​​portion. When the second track section moves to the rear end position, the snap-fit ​​portion is embedded in the groove. A second through hole is provided on the second strip body of the second track section and on the rear side of the pin. The rear end of a front push block movably disposed in the second through hole is connected to a push rod movably disposed in the receiving area. The front end of the front push block is used to push and cooperate with the rear end of the snap-fit ​​member. A third through hole is provided at the rear end of the second strip body. The rear end of the push rod extending along the length direction of the second track section is connected to a rear push block movably mounted on the third through hole. When the second track section moves to the rear end position and the push rod moves to the front end position, the front push block pushes and contacts the snap-fit ​​member, and the snap-fit ​​part on the snap-fit ​​member rotates to the second state and is located outside the inclined groove.

[0005] The following are further improvements to the above technical solution: 1. In the above solution, a push groove is provided at the rear end of the snap-fit ​​component, and an inner wall of the push groove that allows the front push block to be embedded and cooperate with the front push block is set as an inclined surface that is mirror-inclined to the snap-fit ​​part.

[0006] 2. In the above scheme, the push rod is provided with a plurality of guide holes spaced apart along the length direction, and the second track section is provided with a plurality of guide pins that cooperate with the guide holes. The other end of the guide pin, which is connected to the second strip body of the second track section at one end, is embedded in the strip guide hole extending along the length direction of the push rod and slides in cooperation with the inner wall of the guide hole.

[0007] 3. In the above scheme, the snap-fit ​​protrusion has a guide slope on the front side of the inclined groove, and the guide slope located at the front section of the snap-fit ​​protrusion forms an acute angle α2 with the second flange near the outer extension, which is smaller than the acute angle α1.

[0008] 4. In the above scheme, a ball bearing frame with a length shorter than the first track section and the second track section is provided between the first flanged part and the corresponding second flanged part. A plurality of balls are respectively installed in a plurality of ball holes opened at intervals along the length direction on the ball bearing frame and respectively roll in contact with the first flanged part and the second flanged part.

[0009] 5. In the above scheme, the first flange and the second flange each have a ball groove extending along their length direction on the side facing the ball bearing frame, which allows the corresponding ball to be inserted.

[0010] 6. In the above scheme, a first limiting pin that can move with the second track section is provided at the front end of the second track section and between its two second flanges and the corresponding first flanges. The rear end of the first limiting pin is connected to the front end of the ball bearing frame.

[0011] 7. In the above scheme, each of the first limiting pins and the corresponding second flange is connected by at least one set of keys and slots.

[0012] 8. In the above scheme, a second limiting pin is fixedly provided at the rear end of the first track section and between its two first flanges and corresponding second flanges. When the second track section moves to the rear end position, the rear end of the ball bearing frame abuts against the front end of the second limiting pin.

[0013] 9. In the above scheme, the bottoms of the two second limiting pins are connected by a rib plate embedded in the first strip body.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model relates to a cabinet slide rail. The second rail section has a second strip-shaped body with an arched portion extending along its length and away from the first strip-shaped body, thus forming an accommodating area between the arched portion and the first strip-shaped body of the first rail section. A snap-fit ​​component is rotatably mounted on the front section of the second rail section, located on the side of the arched portion opposite to the first strip-shaped body, via a pin. A snap-fit ​​protrusion corresponding to the snap-fit ​​component is provided on the rear section of the first rail section, on the surface of the first strip-shaped body facing the arched portion. One side of the front end face of the snap-fit ​​component has an extension portion away from the pin. The end of the extension portion away from the pin is connected to the second rail section via a torsion spring, allowing the rotatable snap-fit ​​component to maintain a first state where the extension portion approaches a second flange portion on the side of the second rail section. The extension portion has a snap-fit ​​portion that passes through a first through-hole in the second strip-shaped body and bends towards the first strip-shaped body. When the snap-fit ​​component is in the first state, an acute angle α is formed between the inclined snap-fit ​​portion and the second flange portion near the extension portion. 1. A groove with the same inclination angle as the locking part is formed on the locking protrusion located in the receiving area. When the second track section moves to the rear position, the locking part is embedded in the groove. A second through hole is formed on the second strip body of the second track section and on the rear side of the pin. The rear end of a push block movably set in the second through hole is connected to a push rod movably set in the receiving area. The front end of the push block is used to push and cooperate with the rear end of the locking part. A third through hole is formed at the rear end of the second strip body. The rear end of the push rod extending along the length direction of the second track section is connected to the push block movably installed on the third through hole. When the second track section moves to the rear position and the push rod moves to the front position, the push block and the locking part push and contact each other. The locking part on the locking part of the second state is located outside the groove. This can maintain the stability of the positional relationship between the two when the second track section is pulled out to the outside of the first track section, and also facilitate the retraction of the second track section into the first track section, improving the convenience and stability of use. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the cabinet slide rail of this utility model in its retracted state; Appendix Figure 2 for Figure 1 Enlarged view of a local structure in the image; Appendix Figure 3 This is an exploded view of the structure of the cabinet in its retracted state. Appendix Figure 4 This is a schematic diagram of the cabinet slide rail in the pull-out state of this utility model; Appendix Figure 5 This is an exploded view of the cabinet slide rails of this utility model in the pulled-out state.

[0016] In the above attached figures: 1. First track section; 101. First strip body; 102. First flange; 103. Stop block; 2. Second track section; 201. Second strip body; 202. Second flange; 203. First through hole; 204. Second through hole; 205. Third through hole; 31. Ball bearing frame; 32. Ball; 33. Ball hole; 34. Ball groove; 41. First limiting pin; 42. Second limiting pin; 5. Rib plate; 61. Arched part; 62. Accommodating area; 7. Pin shaft; 8. Snap-fit ​​part; 81. Extension part; 82. Snap-fit ​​part; 83. Push groove; 9. Snap-fit ​​protrusion; 91. Inclined groove; 92. Guide inclined surface; 10. Torsion spring; 11. Front push block; 12. Push rod; 13. Rear push block; 141. Guide hole; 142. Guide pin. Detailed Implementation

[0017] The present patent can be further understood through the specific embodiments given below, but they are not intended to limit the present patent.

[0018] Example 1: A cabinet slide rail includes: a first track section 1 and a second track section 2 that slides with the first track section 1. The first track section 1 includes a first strip-shaped body 101 and first flanges 102 respectively disposed on both sides of the first strip-shaped body 101 along its length. The second track section 2, correspondingly embedded in the first track section 1, includes a second strip-shaped body 201 and second flanges 202 respectively disposed on both sides of the second strip-shaped body 201 along its length. The second strip-shaped body 201 of the second track section 2 has an arched portion 61 extending along its length and away from the first strip-shaped body 101, thereby forming an accommodating area 62 between the arched portion 61 and the first strip-shaped body 101 of the first track section 1. A snap-fit ​​member 8 is rotatably mounted on the front section of the second track section 2, located on the side opposite to the first strip-shaped body 101 of the arched portion 61, via a pin 7. The rear section of the first track section 1, located on the side opposite to the first strip-shaped body 101, is... A snap-fit ​​protrusion 9 corresponding to the snap-fit ​​member 8 is provided on the surface of 101 facing the arched portion 61. One side of the front end face of the snap-fit ​​member 8 has an extension portion 81 away from the pin 7. The end of the extension portion 81 away from the pin 7 is connected to the second track section 2 by a torsion spring 10, so that the rotatable snap-fit ​​member 8 maintains a first state in which the extension portion 81 is close to the second flange portion 202 on the side of the second track section 2. The extension portion 81 has a through-hole that passes through the second track section 2. The first through hole 203 on the body 201 bends towards the first strip body 101. When the snap-fit ​​part 8 is in the first state, the snap-fit ​​part 82, which is inclined, forms an acute angle α1 with the second flange part 202 near the outer extension part 81. The snap-fit ​​protrusion 9 located in the receiving area 62 has a groove 91 with the same inclination angle as the snap-fit ​​part 82. When the second track section 2 moves to the rear end position, the snap-fit ​​part 82 is embedded in the groove 91. A second through hole 204 is provided on the second strip body 201 of the second track section 2 and located on the rear side of the pin 7. The rear end of a front push block 11 movably disposed in the second through hole 204 is connected to a push rod 12 movably disposed in the receiving area 62. The front end of the front push block 11 is used to push and cooperate with the rear end of the snap-fit ​​member 8. A third through hole 205 is provided at the rear end of the second strip body 201. The rear end of the push rod 12 extending along the length direction of the second track section 2 is connected to a rear push block 13 movably mounted on the third through hole 205. When the second track section 2 moves to the rear end position and the push rod 12 moves to the front end position, the front push block 11 pushes and contacts the snap-fit ​​member 8 and the snap-fit ​​part 82 on the snap-fit ​​member 8, which is rotated to the second state, is located outside the inclined groove 91.

[0019] The rear end of the aforementioned snap-fit ​​part 8 is provided with a push groove 83, and the inner wall of the push groove 83 into which the front push block 11 is inserted and cooperates with the front push block 11 is set as an inclined surface that is mirror-inclined to the snap-fit ​​part 82. The push rod 12 is provided with a number of guide holes 141 spaced apart along the length direction. The second track section 2 is provided with a number of guide pins 142 that cooperate with the guide holes 141. One end of the guide pin 142 is connected to the second strip body 201 of the second track section 2, and the other end is embedded in the strip-shaped guide hole 141 extending along the length direction of the push rod 12 and slides in cooperation with the inner wall of the guide hole 141. The length of the strip-shaped guide hole is the stroke length of the front and rear push blocks and the push rod. The aforementioned snap-fit ​​protrusion 9 has a guide slope 92 located on the front side of the inclined groove 91. The aforementioned guide slope 92 located at the front section of the snap-fit ​​protrusion 9 forms an acute angle α2 with the second flange portion 202 near the outer extension portion 81, which is smaller than the acute angle α1. One sidewall of the through hole 203 on the second strip body 201 is set as an inclined surface, such that when the snap-fit ​​member 8 is in the first state, the snap-fit ​​part 83 contacts the sidewall of the through hole 203 and the surface of the extension part 81 facing the second flange part 202 is parallel to and spaced apart from the second flange part 202.

[0020] Example 2: A cabinet slide rail includes: a first track section 1 and a second track section 2 that slides with the first track section 1. The first track section 1 includes a first strip-shaped body 101 and first flanges 102 respectively disposed on both sides of the first strip-shaped body 101 along its length. The second track section 2, correspondingly embedded in the first track section 1, includes a second strip-shaped body 201 and second flanges 202 respectively disposed on both sides of the second strip-shaped body 201 along its length. The second strip-shaped body 201 of the second track section 2 has an arched portion 61 extending along its length and away from the first strip-shaped body 101, thereby forming an accommodating area 62 between the arched portion 61 and the first strip-shaped body 101 of the first track section 1. A snap-fit ​​member 8 is rotatably mounted on the front section of the second track section 2, located on the side opposite to the first strip-shaped body 101 of the arched portion 61, via a pin 7. The rear section of the first track section 1, located on the side opposite to the first strip-shaped body 101, is... A snap-fit ​​protrusion 9 corresponding to the snap-fit ​​member 8 is provided on the surface of 101 facing the arched portion 61. One side of the front end face of the snap-fit ​​member 8 has an extension portion 81 away from the pin 7. The end of the extension portion 81 away from the pin 7 is connected to the second track section 2 by a torsion spring 10, so that the rotatable snap-fit ​​member 8 maintains a first state in which the extension portion 81 is close to the second flange portion 202 on the side of the second track section 2. The extension portion 81 has a through-hole that passes through the second track section 2. The first through hole 203 on the body 201 bends towards the first strip body 101. When the snap-fit ​​part 8 is in the first state, the snap-fit ​​part 82, which is inclined, forms an acute angle α1 with the second flange part 202 near the outer extension part 81. The snap-fit ​​protrusion 9 located in the receiving area 62 has a groove 91 with the same inclination angle as the snap-fit ​​part 82. When the second track section 2 moves to the rear end position, the snap-fit ​​part 82 is embedded in the groove 91. A second through hole 204 is provided on the second strip body 201 of the second track section 2 and located on the rear side of the pin 7. The rear end of a front push block 11 movably disposed in the second through hole 204 is connected to a push rod 12 movably disposed in the receiving area 62. The front end of the front push block 11 is used to push and cooperate with the rear end of the snap-fit ​​member 8. A third through hole 205 is provided at the rear end of the second strip body 201. The rear end of the push rod 12 extending along the length direction of the second track section 2 is connected to a rear push block 13 movably mounted on the third through hole 205. When the second track section 2 moves to the rear end position and the push rod 12 moves to the front end position, the front push block 11 pushes and contacts the snap-fit ​​member 8 and the snap-fit ​​part 82 on the snap-fit ​​member 8, which is rotated to the second state, is located outside the inclined groove 91.

[0021] The front end of the first track section 1 has at least one stop block 103. When it is in the front end position, the front end face of the second track section 2 contacts the stop block 103. The two stop blocks 103 are spaced apart along the width direction on the first strip body 101 of the first track section 1. A ball bearing frame 31 with a length shorter than the first track section 1 and the second track section 2 is provided between the first flanged part 102 and the corresponding second flanged part 202. A plurality of balls 32 are respectively installed in a plurality of ball holes 33 that are spaced apart along the length direction on the ball bearing frame 31 and respectively roll in contact with the first flanged part 102 and the second flanged part 202. The first flange portion 102 and the second flange portion 202 are each provided with a ball groove 34 extending along their length direction on the side facing the ball strip holder 31, which allows the corresponding ball 32 to be inserted. The front end of the second track section 2 and between its two second flanges 202 and the corresponding first flanges 102 are provided with a first limiting pin 41 that can move with the second track section 2. The rear end of the first limiting pin 41 is connected to the front end of the ball strip frame 31. Each of the aforementioned first limiting pins 41 is connected to the corresponding second flange portion 202 by at least one set of key and groove; A second limiting pin 42 is fixedly provided at the rear end of the first track section 1 and between its two first flanges 102 and the corresponding second flanges 202. When the second track section 2 moves to the rear end position, the rear end of the ball strip frame 31 abuts against the front end of the second limiting pin 42. The bottoms of the two aforementioned second limiting pins 42 are connected by a rib plate 5 embedded in the first strip body 101.

[0022] In use, the tray containing the computing module or power module is installed between the second track section 2 of the two slide rails that are set opposite each other, and the two first track sections 1 are installed on the frame. The tray can be pulled out and retracted by the reciprocating sliding of the second track section 2 in the first track section 1, so as to facilitate the loading, unloading, maintenance and other operations of the tray and computing module or power module. When the second track section 2 retracts into the first track section 1, the front end face of the second track section 2 presses against the stop block 103 on the first track section 1. The snap-fit ​​part 8, which is rotatably disposed on the second track section 2, is kept in a first state where the outer extension 81 is close to the second flange 202 on one side of the second track section 2 under the action of the torsion spring 10 and away from the snap-fit ​​protrusion 9 at the rear of the first track section 1. When the second track section 2 is pulled toward the rear end of the first track section 1, the second track section 2 slides backward relative to the first track section 1 under the action of the balls 32 on the ball bearing frame 31. The ball bearing frame 31 with the balls 32 installed moves backward until its rear end is pressed against the second limit pin 42 on the first track section 1. At this time, the second track section 2 is in a fully pulled-out state. During the above-mentioned pulling process, when the locking part 82 on the rotatable locking part 8 first contacts the guide slope 92 on the locking protrusion 9, the locking part 82 rotates under the action of the guide slope 92 on the locking protrusion 9 and squeezes the torsion spring 10 until the locking part 82 moves to the position of the inclined groove 91 on the locking protrusion 9. The locking part 8 is reset under the action of the torsion spring 10 and thus embedded in the inclined groove 91 on the locking protrusion 9, thereby locking the position of the second track section 2, so that the second track section 2 can no longer move in the front and back directions, ensuring the stability of its pulling state, so as to facilitate the operation of the tray and computing module or power module pulled out of the frame without adverse interference such as position displacement. When it is necessary to retract the second track section 2 into the first track section 1, the rear push block 13 is pushed forward, thereby driving the push rod 12 and the front push block 11 to move forward. The rear push block 13 is located on the outside opposite to the tray and at the end away from the frame, so it is easy to operate the rear push block 13 without causing adverse interference. The forward push block 11 moves forward to push the locking member 8 to rotate and squeeze the torsion spring 10, so that the locking part 82 on the locking member 8 disengages outward from the inclined groove 91 on the locking protrusion 9, and the second track section 2 loses its lock, so the second track section 2 can be moved forward and retracted into the first track section 1.

[0023] When using the above-mentioned cabinet slide rails, it can maintain the stability of the positional relationship between the two when the second track section is pulled out to the outside of the first track section, and it is also easy to retract the second track section into the first track section, thus improving the convenience and stability of use.

[0024] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A rack slide rail, comprising: A first track section (1) and a second track section (2) that slides with the first track section (1). The first track section (1) includes a first strip body (101) and first flanges (102) respectively disposed on both sides of the first strip body (101) along the length direction. The second track section (2) that is embedded in the first track section (1) includes a second strip body (201) and second flanges (202) respectively disposed on both sides of the second strip body (201) along the length direction. The second track section (2) is characterized in that: the second strip body (101) is a second strip body (201) and a second flange (202) respectively disposed on both sides of the second strip body (201) along the length direction. The body (201) has an arch (61) extending along its length and away from the first strip body (101), thereby forming a receiving area (62) between the arch (61) and the first strip body (101). The front section of the second track section (2) and the side of the arch (61) opposite to the first strip body (101) are rotatably mounted with a snap-fit ​​member (8) via a pin (7). The rear section of the first track section (1) and the surface of the first strip body (101) facing the arch (61) are also mounted on it. The upper part is provided with a snap-fit ​​protrusion (9) corresponding to the snap-fit ​​member (8). One side of the front end face of the snap-fit ​​member (8) has an extension (81) away from the pin (7). The end of the extension (81) away from the pin (7) is connected to the second track section (2) by a torsion spring (10), so that the rotatable snap-fit ​​member (8) maintains a first state in which the extension (81) is close to the second flange (202) on the side of the second track section (2). The extension (81) has a through-hole that passes through the second strip body (201). The first through hole (203) has a snap-fit ​​part (82) bent towards the first strip body (101). When the snap-fit ​​part (8) is in the first state, the snap-fit ​​part (82) is inclined and forms an acute angle α1 with the second flange part (202) near the extension part (81). A groove (91) with the same inclination angle as the snap-fit ​​part (82) is opened on the snap-fit ​​protrusion (9) located in the receiving area (62). When the second track section (2) moves to the rear end position, the snap-fit ​​part (82) is embedded in the groove (91). A second through hole (204) is provided on the second strip body (201) and located on the rear side of the pin (7). The rear end of a front push block (11) movably disposed in the second through hole (204) is connected to a push rod (12) movably disposed in the receiving area (62). The front end of the front push block (11) is used to push and cooperate with the rear end of the snap-fit ​​member (8). A third through hole (205) is provided at the rear end of the second strip body (201). The rear end of the push rod (12) extending along the length direction of the second track section (2) is connected to a rear push block (13) movably installed on the third through hole (205). When the second track section (2) moves to the rear end position and the push rod (12) moves to the front end position, the front push block (11) pushes and contacts the snap-fit ​​member (8) and the snap-fit ​​part (82) on the snap-fit ​​member (8) rotates to the second state and is located outside the inclined groove (91).

2. The rack slide rail according to claim 1, characterized in that: The rear end of the snap-fit ​​part (8) has a push groove (83) for the front push block (11) to be embedded in. One inner wall of the push groove (83) and the front push block (11) is set as an inclined surface that is mirror-inclined to the snap-fit ​​part (82).

3. The rack slide rail according to claim 1 or 2, characterized in that: The push rod (12) has a number of guide holes (141) spaced apart along the length direction. The second track section (2) has a number of guide pins (142) spaced apart and cooperating with the guide holes (141). One end of the guide pin (142) is connected to the second strip body (201) of the second track section (2), and the other end is embedded in the strip guide hole (141) extending along the length direction of the push rod (12) and slides in cooperation with the inner wall of the guide hole (141).

4. The rack slide rail according to claim 1, characterized in that: The snap-fit ​​protrusion (9) has a guide slope (92) on the front side of the inclined groove (91). The guide slope (92) located at the front section of the snap-fit ​​protrusion (9) forms an acute angle α2 smaller than the acute angle α1 between the second flange (202) near the extension (81) and the second flange (202).

5. The rack slide rail according to claim 1, characterized in that: A ball bearing frame (31) with a length shorter than that of the first track section (1) and the second track section (2) is provided between the first flange (102) and the corresponding second flange (202). A number of balls (32) are respectively installed in a number of ball holes (33) opened at intervals along the length direction on the ball bearing frame (31) and respectively roll in contact with the first flange (102) and the second flange (202).

6. The rack slide rail according to claim 5, characterized in that: The first flange (102) and the second flange (202) each have a ball groove (34) extending along their length direction and into which the corresponding ball (32) can be inserted on the side facing the ball strip frame (31).

7. The rack slide rail according to claim 5 or 6, characterized in that: The front end of the second track section (2) and between its two second flanges (202) and the corresponding first flanges (102) are provided with a first limiting pin (41) that can move with the second track section (2). The rear end of the first limiting pin (41) is connected to the front end of the ball bearing frame (31).

8. The rack slide rail according to claim 7, characterized in that: Each of the first limiting pins (41) and the corresponding second flange (202) is connected by at least one set of keys and slots.

9. The rack slide rail according to claim 7, characterized in that: A second limiting pin (42) is fixedly provided at the rear end of the first track section (1) and between its two first flanges (102) and the corresponding second flanges (202). When the second track section (2) moves to the rear end position, the rear end of the ball strip frame (31) and the front end of the second limiting pin (42) are in abutting contact.

10. The rack slide rail according to claim 9, characterized in that: The bottoms of the two second limiting pins (42) are connected by a rib plate (5) embedded in the first strip body (101).

Images