High-temperature-resistant slide rail with elastic sheet lock
By introducing a spring-loaded locking structure into the slide rail, and utilizing the cooperation between the ball bearing cage and the spring, the slide rail achieves automatic locking after stretching and prevents misalignment of the ball bearing interlayer. This solves the stability and durability problems of existing slide rails and improves their safety performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN HENGFENG PRECISION MASCH CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-06-19
AI Technical Summary
Existing slide rails are prone to shrinkage after stretching, and the ball bearing interlayer is prone to misalignment, leading to wear or damage, making it impossible to achieve automatic locking and restrict free sliding.
A high-temperature resistant slide rail with spring-loaded locking mechanism is designed. By setting a sliding mechanism and a locking mechanism between the first track and the second track, the second track is automatically locked after being stretched by the cooperation of the ball frame, ball, first spring, second spring and locking protrusion. The locking force is adjusted by adjusting the cooperation force of the spring mechanism to prevent misalignment of the ball interlayer.
It achieves automatic locking of the slide rail after stretching to prevent shrinkage, improves the durability and safety performance of the slide rail, and meets the market demand for restricting free sliding and high temperature resistance.
Smart Images

Figure CN224369386U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slide rail structure technology, and in particular to a high-temperature resistant slide rail with spring locking mechanism. Background Technology
[0002] Drawer slides, as a key component, are widely used in drawers, doors, seats, and other parts that require movement and balance. Existing drawer slides generally suffer from two problems: first, after being stretched, they easily contract under external force, making it difficult to maintain a stable stretched state; second, during the stretching process, the ball bearing layers between the slides are prone to misalignment, leading to unnecessary wear between the ball bearing layers and the slides, and potentially even damage to the slide. Structurally, they cannot address the market's need for drawer slides with restricted free-sliding functionality. Therefore, a drawer slide is needed that can automatically lock after stretching and prevent misalignment of the ball bearing layers during stretching. Utility Model Content
[0003] The purpose of this invention is to provide a high-temperature resistant slide rail with spring locking, which solves the problems that existing slide rails cannot automatically lock after stretching, and that the ball bearing interlayer is prone to misalignment during stretching.
[0004] The present invention provides the following technical solution: a high-temperature resistant slide rail with spring-loaded locking mechanism, comprising a first track, a second track, and a sliding mechanism and a locking mechanism disposed between the first track and the second track. The sliding mechanism includes a ball bearing frame and a plurality of arranged balls. The balls are movably disposed on the first track along its length. The ball bearing frame is movably sleeved on the plurality of balls, allowing the ball bearing frame to move back and forth along the length of the first track as the balls roll. The second track is sleeved on the ball bearing frame and simultaneously abuts against the side of the plurality of balls away from the first track. The second track can move along the length of the first track as the ball frame moves. The locking mechanism includes a first spring, a second spring, and a locking protrusion. When the second track stretches relative to the first track, the second spring continuously presses against the ball frame. After the ball frame passes the locking protrusion, the locking protrusion passes and presses against the second spring and the first spring in sequence. The first spring has a limiting protrusion, which is used to abut against the locking protrusion after the locking protrusion passes the first spring, so as to limit the contraction movement of the second track relative to the first track.
[0005] As described above, in a high-temperature resistant slide rail with spring locking mechanism, the locking mechanism further includes a limiting baffle at the end of the first rail. When the second rail is stretched relative to the first rail, the locking mechanism is used to abut against the end of the ball frame away from the second spring to limit the movement of the ball frame.
[0006] As described above, in a high-temperature resistant slide rail with spring-loaded locking, the first spring has opposing abutment planes along the length of the first rail, and the limiting convex surface is located between the opposing abutment planes, so that the first spring is arranged in an arch shape.
[0007] The high-temperature resistant slide rail with spring-loaded locking mechanism described above has a locking protrusion that is hemispherical.
[0008] As described above, in a high-temperature resistant slide rail with spring locking mechanism, the first spring and the second spring are both disposed on the second rail near the side of the first rail, and the locking protrusion protrudes from the first rail.
[0009] As described above, in a high-temperature resistant slide rail with spring locking, the second spring is bent toward the direction of the first rail. When the locking protrusion passes the second spring, it presses against the side of the second spring that is close to the first rail, causing the second spring to swing toward the second rail.
[0010] As described above, in a high-temperature resistant slide rail with spring locking mechanism, after the locking protrusion passes the second spring, the side of the second spring away from the first spring presses against the ball bearing frame.
[0011] As described above, in a high-temperature resistant slide rail with spring-loaded locking mechanism, the second spring and the second rail are integrally formed.
[0012] As described above, a high-temperature resistant slide rail with spring-loaded locking mechanism is provided, wherein the first spring is detachable from the second rail.
[0013] In the high-temperature resistant slide rail with spring locking as described above, the ball bearings, the first spring, the second spring, and the locking protrusion are arranged in two opposing sets.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] This utility model discloses a slide rail with a spring-loaded locking structure. A sliding mechanism and a locking mechanism are set between a first track and a second track. The sliding mechanism, through the cooperation of a ball bearing frame and multiple balls, enables the second track to extend and retract relative to the first track. The locking mechanism includes a first spring, a second spring, and a locking protrusion. Firstly, the first spring has a limiting convex surface for abutting against the locking protrusion. This limiting convex surface, by abutting and limiting the locking protrusion, achieves an automatic locking effect on the second track after extension, preventing it from contracting and moving. Simultaneously, the double-spring structure allows the locking mechanism to be adjusted during extension, thereby adjusting the locking force required for the slide rail to close or open by adjusting the locking mechanism and the engagement force between the spring mechanism and the locking protrusion. This, combined with a slide rail that can be made of all-metal components, effectively solves the market's demand for slide rails with limited automatic sliding function and high-temperature resistance, improving the safety performance of high-temperature resistant slide rails. Attached Figure Description
[0016] Figure 1 This is a three-dimensional exploded view of the slide rail of this utility model.
[0017] Figure 2 This is a partial three-dimensional schematic diagram of the slide rail of this utility model.
[0018] Figure 3 This is a partial three-dimensional exploded view of the slide rail of this utility model.
[0019] Figure 4 This is a partial three-dimensional exploded view of the slide rail of this utility model from another angle.
[0020] Explanation of reference numerals in the attached drawings: 1. First track; 2. Second track; 3. Sliding mechanism; 4. Locking mechanism; 31. Ball holder; 32. Ball; 41. First spring; 42. Second spring; 43. Locking protrusion; 44. Restricting baffle; 411. Restricting convex surface; 412. Abutting plane. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Example 1: Please refer to the appendix Figure 1 To be continued Figure 4This embodiment provides a high-temperature resistant slide rail with spring-locking mechanism, including a first track 1, a second track 2, and a sliding mechanism 3 and a locking mechanism 4 disposed between the first track 1 and the second track 2. The sliding mechanism 3 includes a ball bearing frame 31 and a plurality of balls 32 arranged in a row. The balls 32 are movably disposed on the first track 1 along its length. The ball bearing frame 31 is movably sleeved on the plurality of balls 32, allowing the ball bearing frame 31 to move back and forth along the length of the first track 1 as the balls 32 roll. The second track 2 is sleeved on the ball bearing frame 31 and simultaneously abuts against the side of the plurality of balls 32 away from the first track 1, so that the second track... Track 2 can move along the length of the first track 1 as the ball frame 31 moves. The locking mechanism 4 includes a first spring 41, a second spring 42, and a locking protrusion 43. When the second track 2 moves in a stretching motion relative to the first track 1, the second spring 42 continuously presses against the ball frame 31. After the ball frame 31 passes the locking protrusion 43, the locking protrusion 43 passes through and presses against the second spring 42 and the first spring 41 in sequence. The first spring 41 is provided with a limiting protrusion 411. The limiting protrusion 411 is used to abut against the locking protrusion 43 after the locking protrusion 43 passes the first spring 41, so as to limit the contraction movement of the second track 2 relative to the first track 1. In this embodiment, a slide rail with a spring-loaded locking structure is provided with a sliding mechanism 3 and a locking mechanism 4 between the first track 1 and the second track 2. The sliding mechanism 3 achieves the telescopic movement of the second track 2 relative to the first track 1 through the cooperation of the ball bearing frame 31 and multiple balls 32. The locking mechanism 4 includes a first spring 41, a second spring 42, and a locking protrusion 43. First, the first spring 41 is provided with a limiting convex surface 411 for abutting the locking protrusion 43. The limiting convex surface 411 achieves the automatic locking effect of the second track 2 after stretching by abutting and limiting the locking protrusion 43, making the second track 2 less prone to shrinkage and movement. At the same time, during the stretching process of the second track 2, the second spring 42 continuously presses against the ball bearing frame 31, achieving the effect that the ball bearing frame 31 is not prone to misalignment when moving with the second track 2, making the guide rail more durable and less prone to damage. The double-spring structure allows the second track 2 to adjust the engagement force between the spring mechanism and the locking protrusion 43 during the stretching process by adjusting the locking mechanism 4. This adjusts the locking force required for the slide rail to close or open. Combined with slide rails that can be made of all-metal components, this effectively addresses market limitations on slide rails, including the need for automatic sliding function and high-temperature resistance, thus improving the safety performance of high-temperature resistant slide rails.
[0023] The locking mechanism 4 also includes a limiting baffle 44 located at the end of the first track 1. When the second track 2 is stretched relative to the first track 1, the locking mechanism 4 abuts against the end of the ball carrier 31 away from the second spring 42 to limit the movement of the ball carrier 31. By abutting against the ball carrier 31, the limiting baffle 44 restricts the continued stretching of the second track 2, thereby preventing the ball carrier 31 from detaching from the first track 1.
[0024] Preferably, the first spring piece 41 has opposing abutment planes 412 along the length direction of the first track 1, restricting the convex surface 411 to be located between the opposing abutment planes 412, so that the first spring piece 41 is arranged in an arch shape, making the locking transition process smoother.
[0025] Preferably, the locking protrusion 43 is hemispherical, which makes the locking transition process smoother.
[0026] Preferably, both the first spring piece 41 and the second spring piece 42 are disposed on the second track 2 on the side near the first track 1, and the locking protrusion 43 protrudes from the first track 1. The second spring piece 42 is bent towards the first track 1. When the locking protrusion 43 passes the second spring piece 42, it presses against the side of the second spring piece 42 near the first track 1, causing the second spring piece 42 to swing closer to the second track 2. After the locking protrusion 43 passes the second spring piece 42, the side of the second spring piece 42 away from the first spring piece 41 presses against the ball bearing cage 31.
[0027] Based on this, the second spring 42 and the second track 2 can be integrally formed, saving materials.
[0028] Based on this, the first spring 41 can be detached from the second track 2, and the automatic locking function of the slide rail can be given or released by installing or removing the first spring 41.
[0029] The ball bearing 32, the first spring 41, the second spring 42, and the locking protrusion 43 are arranged in two opposing sets, making the telescopic movement of the second track 2 relative to the first track 1 more stable.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-temperature resistant slide rail with spring-loaded locking mechanism, characterized in that: The system includes a first track (1) and a second track (2) respectively, as well as a sliding mechanism (3) and a locking mechanism (4) disposed between the first track (1) and the second track (2). The sliding mechanism (3) includes a ball holder (31) and a plurality of balls (32) arranged in a row. The balls (32) are movably disposed on the first track (1) along the length direction of the first track (1). The ball holder (31) is movably sleeved on the plurality of balls (32), so that the ball holder (31) can move back and forth along the length direction of the first track (1) as the balls (32) roll. The second track (2) is sleeved on the ball holder (31) and simultaneously abuts against the side of the plurality of balls (32) away from the first track (1), so that the second track (2) can move along the first track (1) along the length direction of the first track (1). The length direction moves with the movement of the ball frame (31). The locking mechanism (4) includes a first spring (41), a second spring (42), and a locking protrusion (43). When the second track (2) stretches relative to the first track (1), the second spring (42) continuously presses against the ball frame (31). After the ball frame (31) passes the locking protrusion (43), the locking protrusion (43) passes and presses against the second spring (42) and the first spring (41) in sequence. The first spring (41) is provided with a limiting protrusion (411). The limiting protrusion (411) is used to abut against the locking protrusion (43) after the locking protrusion (43) passes the first spring (41) to limit the contraction movement of the second track (2) relative to the first track (1).
2. The high-temperature resistant slide rail with a spring lock according to claim 1, wherein: The locking mechanism (4) further includes a limiting baffle (44) disposed at the end of the first track (1). When the second track (2) is stretched relative to the first track (1), the locking mechanism (4) is used to abut against the end of the ball frame (31) away from the second spring (42) to limit the movement of the ball frame (31).
3. The high-temperature resistant slide rail with spring-loaded locking according to claim 1, characterized in that: The first spring piece (41) has opposing abutment planes (412) along the length direction of the first track (1), and the limiting convex surface (411) is located between the opposing abutment planes (412), so that the first spring piece (41) is arranged in an arch shape.
4. The high-temperature resistant slide rail with a spring lock according to claim 1, wherein: The locking protrusion (43) is hemispherical.
5. The high-temperature slide rail of claim 1, wherein: The first spring (41) and the second spring (42) are both disposed on the second track (2) on the side close to the first track (1), and the locking protrusion (43) protrudes from the first track (1).
6. The high-temperature slide rail of claim 5, wherein: The second spring (42) is bent toward the first track (1). When the locking protrusion (43) passes the second spring (42), it presses against the side of the second spring (42) that is close to the first track (1), causing the second spring (42) to swing toward the second track (2).
7. The high-temperature slide rail of claim 6, wherein: After the locking protrusion (43) passes the second spring (42), the second spring (42) presses against the ball frame (31) from the side away from the first spring (41).
8. The high-temperature slide rail of claim 7, wherein: The second spring (42) and the second track (2) are integrally formed.
9. The high-temperature slide rail of claim 5, wherein: The first spring piece (41) is detachable from the second track (2).
10. The high-temperature slide rail of claim 1, wherein: The ball bearing (32), the first spring (41), the second spring (42), and the locking protrusion (43) are all arranged in two opposing sets.