Slide rail buffer device and drawer slide rail

Abstract

The utility model relates to the technical field of sliding rails, in particular to a sliding rail buffering device and a drawer sliding rail, which comprise a base, a sliding block, a tension spring and a damper, the sliding block is assembled with the base in a sliding mode, two ends of the tension spring are respectively connected to the side wall of the base and the side wall of the sliding block, and the damper is arranged on the base. A cylinder body of the damper is connected with the base, a push rod of the damper is connected with the sliding block, the two tension springs are arranged and located on the upper side and the lower side of the damper respectively, a buffering elastic piece is arranged on the other side wall, away from the tension springs, of the sliding block, and the buffering elastic piece is provided with at least two buffering spaces. The two sets of buffering elastic pieces are arranged corresponding to the tension springs, impact force generated when the guide rail makes contact with the sliding block is effectively absorbed, noise generated by collision of the guide rail and the sliding block is reduced, the quiet comfort degree of drawer closing is improved, the stability of contact buffering of the guide rail and the sliding block is improved, and the reliability of the buffering effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of slide rails, in particular to a slide rail buffer device and a drawer slide rail. Background Art

[0002] In modern home design, drawers are core components for storage and organization. To enhance ease of use and ensure smooth pulling and sliding, current designs generally feature a pair of slide rails at the bottom of the drawer and at corresponding locations on the cabinet body to facilitate opening and closing. As consumers' demands for home furnishing quality continue to rise, higher standards are being placed on the smoothness, quietness, and durability of drawers. The performance of the slide rails directly impacts the user's daily experience.

[0003] In order to buffer the opening and closing of the drawer and reduce the opening and closing noise of the drawer, the existing drawer slide rail structure uses a damper for buffering and assisting the folding. The Chinese utility model patent with the announcement number CN217547566U discloses a slide rail buffer, which includes an outer rail; a guide rail fixedly connected to the outer rail; an inner rail slidably connected to the guide rail; a main body fixedly connected to the outer rail; a slider slidably connected to the main body; a damping rod fixedly connected to the main body, and the telescopic end of the damping rod is fixedly connected to the slider; a tension spring, one end of which is fixedly connected to the main body and the other end is fixedly connected to the The drawer is connected to the bottom of the slide block by a rotating plate, and the tooth hook is fixedly connected to the inner rail. The screw-in guide groove is provided on the main body, wherein the rotary plate is slidably connected to the screw-in guide groove. When the inner rail is closed, the tooth hook on the inner rail drives the rotary plate to rotate, so that the slide block and the inner rail are pulled to close under the action of the tension spring. The tooth hook on the inner rail is engaged with the rotary plate, so that the rotary plate rotates. Under the guidance of the screw-in guide groove, the slide block, the tooth hook and the inner rail are synchronously slid and closed. The combined action of the tension spring and the damping rod can make the drawer close slowly and automatically after reaching a certain distance, so as to close silently and effectively prevent the drawer from rebounding.

[0004] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: when the drawer is in the open state, the guide rail will separate from the slider to produce a gap. When the drawer moves from the open state to the closed state, the guide rail will contact and collide with the side wall of the slider, thereby increasing the noise of the slide rail closing. In particular, when the drawer is closed forcefully, the movement speed is fast and a large impact force is generated, causing the guide rail to instantly collide with the side wall of the slider. Or for drawers with relatively large dimensions, when the drawer is pushed inward, under the inertia of the drawer movement, the moment the guide rail contacts the slider, an impact force will also be generated to impact the slider. Due to the lack of a buffer structure between the slider and the guide rail, the force of the collision is difficult to be effectively absorbed, so that the force is directly transmitted to the buffer device, generating collision noise, which can easily cause the slider structure to deform and shift, resulting in abnormal slide rail buffer sliding; similarly, when the drawer moves from the open state to the closed state, the card column is disengaged from the first long groove, causing the slider to move toward the main body. Under the elastic force of the tension spring, the slider directly contacts and collides with the main body, thereby generating collision noise, which reduces the user experience. Utility Model Content

[0005] In order to improve the quietness of the slide rail buffer device and enhance the user experience of the drawer slide rail, the present application provides a slide rail buffer device and a drawer slide rail.

[0006] In the first aspect, the present invention provides a slide rail buffer device that adopts the following technical solutions:

[0007] A slide rail buffer device and a drawer slide rail, comprising a base, a slider, a tension spring and a damper. The slider is slidably assembled with the base, the two ends of the tension spring are respectively connected to the side wall of the base and the side wall of the slider, the cylinder body of the damper is connected to the base, and the push rod of the damper is connected to the slider. The tension springs are provided in two groups and are respectively located on the upper and lower sides of the damper. The other side wall of the slider away from the tension spring is provided with a buffer spring sheet, and the buffer spring sheet is provided with at least two groups of buffer spaces. The buffer spring sheet is provided in two groups corresponding to the tension springs.

[0008] Preferably, the buffer springs are arranged in a wave shape to form three groups of buffer spaces.

[0009] Preferably, a plane portion is provided on the side wall of the buffer spring away from the slider, and the plane portion is parallel to the other side wall of the slider away from the tension spring.

[0010] Preferably, the side wall of the base has a protruding slide rail, the extension direction of the slide rail is the same as the push rod pushing direction of the damper, and the slider is provided with a slide groove for sliding assembly with the slide rail.

[0011] Preferably, it further includes a column, the slide rail is provided with a long groove at one end toward the slider, one end of the column is assembled with the slider, one end of the column slides on the inner wall of the long groove, and the inner wall of the long groove is gradually contracted from the side away from the damper cylinder body toward the side close to the damper cylinder body.

[0012] Preferably, it also includes a rotary vane, the end of the long groove away from the damper cylinder is bent upward to form an upper bent portion, the column is connected to the rotary vane, the slider is provided with an arc groove, the arc groove is bent toward the upper bent portion, and the two ends of the column are respectively slidably assembled in the long groove and the arc groove.

[0013] Preferably, an L-shaped clearance groove is provided at one end of the slide rail close to the damper cylinder body, the clearance groove is located above the long groove, and the clearance groove is connected to the long groove to form an elastic block.

[0014] Preferably, the side arm of the slider away from the buffer spring has a protrusion with an insertion block, the insertion block is arranged in a cone shape, and the side wall of the base facing the slider is provided with an insertion groove adapted to the insertion block.

[0015] Preferably, the insertion block is arranged in a conical shape, and a first cylindrical portion is provided between the insertion block and the side wall of the slider.

[0016] In the second aspect, the present invention provides a drawer slide rail adopting the following technical solution:

[0017] A drawer slide rail includes the above-mentioned slide rail buffer device, and also includes an outer rail, a guide rail, an inner rail, and a shift block. The buffer device is assembled at one end of the outer rail, the guide rail is slidably assembled in the outer rail and moves back and forth toward the buffer device, the inner rail slides in the guide rail and moves back and forth toward the buffer device, and the shift block is connected to the inner wall of the inner rail facing the guide rail and is used to push the column to slide out of the upper bent portion.

[0018] The beneficial effects of the utility model are:

[0019] By providing a buffer spring, the impact force generated when the guide rail and the slider come into contact can be effectively absorbed, the noise caused by the collision between the guide rail and the slider can be reduced, and the quietness and comfort of the drawer closing can be improved. Secondly, by providing the buffer spring and the tension spring in correspondence, the synergy between the buffer spring and the tension spring can be facilitated, making the drawer more stable and smooth during the closing process. Furthermore, at least two groups of buffer spaces are provided by the buffer spring, which improves the stability of the contact buffering between the guide rail and the slider and ensures the reliability of the buffering effect.

[0020] By providing a column and a long groove, when the slider moves toward the base, the column moves along the inner wall of the long groove, thereby guiding the movement of the slider, thereby improving the sliding accuracy of the slider. Secondly, the long groove with a gradually inclined inner wall is used to contact the outer wall of the column to play a buffering role. The inclined contraction direction of the inner wall of the long groove is the same as the moving direction of the slider toward the base. The column moves and contacts the inner wall of the long groove, thereby playing a deceleration and buffering role in the movement of the slider, so that the slider slowly contacts the side wall of the base, thereby avoiding the slider directly hitting the side wall of the base when moving and generating noise, thereby improving the quietness of the slide rail closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional diagram of a buffer device in an embodiment of the present application;

[0022] Figure 2 This is the first exploded view of the buffer device in the embodiment of the present application;

[0023] Figure 3 This is a second exploded view of the buffer device in the embodiment of the present application;

[0024] Figure 4 This is a front view of the base in the embodiment of the present application;

[0025] Figure 5 This is a front view of the slider in the embodiment of the present application;

[0026] Figure 6 is a state diagram of the buffer device in an embodiment of the present application;

[0027] Figure 7 This is a front view of the slider of the buffer device in the embodiment of the present application;

[0028] Figure 8 This is a front view of the drawer slide in the embodiment of the present application;

[0029] Figure 9 This is a first partial exploded view of the drawer slide in the embodiment of the present application;

[0030] Figure 10 This is a second partial exploded view of the drawer slide in the embodiment of the present application;

[0031] Figure 11 This is a state diagram of the drawer slide in the embodiment of the present application.

[0032] Explanation of the accompanying reference numerals: 1. base; 102. slide rail; 1021. long groove; 1033. upper bend; 103. limit groove; 104. give way groove; 105. elastic block; 106. insertion groove; 2. slider; 201. buffer spring; 2011. buffer space; 2012. plane portion; 202. slide groove; 203. limit block; 204. arc groove; 205. insertion block; 2051. first cylindrical portion; 3. tension spring; 4. damper; 5. column; 6. rotary vane; 701. outer rail; 702. guide rail; 703. inner rail; 704. shift block. DETAILED DESCRIPTION

[0033] This section will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that each technical feature and the overall technical solution of the present application can be understood intuitively and vividly, but it cannot be understood as a limitation on the scope of protection of the present application.

[0034] In the description of this application, if there is a description of orientation, such as "upper", "lower", "front", "back", "left", "right", etc., the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on this application. When a feature is referred to as being "disposed", "fixed", or "connected" to another feature, it can be directly disposed, fixed, or connected to the other feature, or indirectly disposed, fixed, or connected to the other feature.

[0035] In the description of this application, if the word "several" is mentioned, it means one or more; if the word "multiple" is mentioned, it means more than two; if the word "greater than," "less than," or "exceeds," it should be understood as excluding the number itself; if the word "above," "below," or "within" is mentioned, it should be understood as including the number itself. If the word "first" or "second" is mentioned, it should be understood as distinguishing technical features, and should not be understood as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0036] In addition, unless otherwise defined, the technical terms and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art. The terms used in this application are only for describing specific embodiments and are not intended to limit this application. It should be understood that when used in this specification and the appended claims, the terms "comprise" and "include" indicate the presence of the described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their collections.

[0037] Example 1: Figure 1-7 As shown, a slide rail 102 buffer device includes a base 1, a slider 2, a tension spring 3, and a damper 4. The slider 2 is slidably assembled with the base 1. The two ends of the tension spring 3 are respectively connected to the side walls of the base 1 and the side walls of the slider 2. The cylinder of the damper 4 is connected to the base 1, and the push rod of the damper 4 is connected to the slider 2. Two groups of tension springs 3 are provided, and are respectively located on the upper and lower sides of the damper 4. A buffer spring 201 is provided on the other side wall of the slider 2 away from the tension spring 3. The buffer spring 201 is provided with at least two groups of buffer spaces 2011. Two groups of buffer springs 201 are provided corresponding to the tension springs. It is worth mentioning that the buffer springs 201 are used to buffer the movement of the guide rail toward the slider 2. The upward group of buffer springs 201 and the upward group of tension springs 3 are arranged on the same horizontal line, and the downward group of buffer springs 201 and the downward group of tension springs 3 are arranged on the same horizontal line.

[0038] When the drawer moves from an open state to a closed state, the buffer spring 201 is provided to effectively absorb the impact force generated when the guide rail and the slider 2 contact, significantly reducing the noise generated by the collision between the guide rail and the slider 2, improving the quietness and comfort of the home environment, and helping to reduce the impact of the collision force on the components of the slide rail 102, which is beneficial to protecting the various components of the slide rail 102 structure, extending its service life, and reducing the frequency of maintenance or replacement. Secondly, by setting the buffer spring 201 corresponding to the tension spring 3, the synergistic effect of the buffer spring 201 and the tension spring 3 is facilitated, making the drawer smoother and smoother during the closing process. Whether it is a light push or a heavy push, a smooth buffering feel can be obtained. The setting of the two groups of buffer springs 201 facing upward and downward can more comprehensively cover the contact surface between the guide rail and the slider 2 to ensure the buffering effect. Furthermore, the buffer spring 201 is provided with at least two groups of buffer spaces 2011 to improve the stability of the contact buffering between the guide rail and the slider 2 and ensure the reliability of the buffering effect.

[0039] In terms of the specific structure of the buffer spring 201, the buffer spring 201 is arranged in a wave shape to form three groups of buffer spaces 2011. The wave-shaped buffer spring 201 has an arc-shaped structure at its bending part. When the guide rail contacts the slider 2, it can effectively disperse and absorb the impact force through the step-by-step compression and release of multiple peaks and troughs, thereby achieving a better buffering effect. Three-level buffering is formed through three groups of buffer spaces 2011. This multi-level buffering mechanism enables the impact energy to be more fully dissipated, reduces the force directly transmitted to the slide rail 102 structure, and adapts to and reduces the impact force through elastic deformation caused by the extrusion of the waveform, so that it can adapt to drawers of different sizes, weights and closing speeds.

[0040] Furthermore, in order to increase the contact area between the guide rail and the buffer spring 201, the buffer spring 201 can effectively buffer the impact force of the guide rail moving toward the slider 2, thereby avoiding stress concentration when the guide rail contacts the buffer spring 201 and causing the spring to break. A flat portion 2012 is provided on the side wall of the buffer spring 201 away from the slider 2. The flat portion 2012 is parallel to the other side wall of the slider 2 away from the tension spring 3. The provision of the flat portion 2012 increases the contact area between the guide rail and the buffer spring 201. When the guide rail moves toward the slider 2, the impact force is more widely distributed on the flat portion 2012, thereby squeezing the buffer space 2011, thereby effectively dispersing the stress, reducing the risk of local stress concentration, reducing the possibility of the buffer spring 201 breaking due to high stress, and enhancing the durability of the buffer spring 201. Secondly, due to the increase in contact area, the buffer spring 201 can more effectively absorb and disperse the impact force generated when the guide rail moves, reduce noise and vibration, and make the drawer open and close more smoothly.

[0041] In terms of the specific structure of the sliding assembly of the slider 2 and the base 1, the side wall of the base 1 has a protruding slide rail 102, and the extension direction of the slide rail 102 is the same as the push-out direction of the damper 4 push rod. The slider 2 is provided with a slide groove 202 for sliding assembly with the slide rail 102. The slider 2 and the base 1 are on the same plane, which improves the structural compactness of the buffer device and reduces the occupancy of the internal space of the drawer. Secondly, the base 1 is provided with a slide rail 102, and the slider 2 is provided with a slide groove 202, so that the slider 2 moves along the slide rail 102 under the elastic pulling action of the tension spring 3, thereby improving the movement accuracy of the slider 2, so that the push rod can slide smoothly into the cylinder of the damper 4, and improve the rationality of the force. Moreover, the guide rail is formed to protrude toward the damper 4 push rod, so the guide rail and the damper 4 are both located in the center position of the two sets of tension springs 3, balancing the force and improving the buffering effect of the buffer device.

[0042] Furthermore, in order to improve the stability of the assembly of the slide groove 202 and the slide rail 102, a limiting groove 103 is opened on the side wall of the slide rail 102 facing the tension spring, and the slider 2 is provided with two sets of limiting grooves 103 so that the cross-section of the slide rail 102 is T-shaped. The slider 2 is provided with a limiting block 203, and the limiting block 203 is protruded from the inner wall of the slide groove 202 toward the limiting groove 103, thereby reducing the direction of disengagement between the slider 2 and the slide rail 102 when sliding, and improving the stability of the assembly of the slider 2 and the base 1.

[0043] When the slider 2 moves along the slide rail 102 toward the base 1, the collision between the slider 2 and the side wall of the base 1 will generate impact force and collision noise. In order to cushion the contact and collision between the slide rail 102 and the base 1, thereby reducing the impact force and reducing the noise, the present embodiment further includes a column 5. The slide rail 102 is provided with a long groove 1021 at one end thereof facing the slider 2. One end of the column 5 is assembled with the slider 2. One end of the column 5 slides on the inner wall of the long groove 1021. The inner wall of the long groove is gradually contracted from the side away from the cylinder body of the damper 4 toward the side close to the cylinder body of the damper 4. Specifically, the inner wall of the long groove 1021 is gradually inclined downward near the inner wall of the upper group of tension springs 3. The inner wall of the long groove 1021 is close to the inner wall of the lower group of tension springs 3 and the slide rail 10 2 is arranged in parallel with the side walls of the long groove 1021. When the slider 2 moves toward the base 1, the column 5 moves along the inner wall of the long groove 1021, thereby guiding the movement of the slider 2, thereby improving the sliding accuracy of the slider 2. Secondly, the long groove 1021 with a gradually inclined inner wall is used to contact with the outer wall of the column 5 to play a buffering role. The inclined contraction direction of the inner wall of the long groove 1021 is the same as the moving direction of the slider 2 toward the base 1. The column 5 moves and contacts with the inner wall of the long groove 1021, thereby playing a deceleration and buffering role in the movement of the slider 2, so that the slider 2 slowly contacts the side wall of the base 1, thereby avoiding the slider 2 directly hitting the side wall of the base 1 when moving and generating noise, thereby improving the quietness of the closing of the slide rail 102.

[0044] When the drawer is opened, in order to keep the drawer in an open state, this embodiment also includes a rotary vane 6. The end of the long groove 1021 away from the damper 4 cylinder body is bent upward and has an upper bent portion 1033. The column 5 is connected to the rotary vane 6. The slider 2 is provided with an arc groove 204, and the arc groove 204 is bent toward the upper bent portion 1033. The two ends of the column 5 are respectively slidably assembled in the long groove 1021 and the arc groove 204. Specifically, the rotary vane 6 is located between the slider 2 and the slide rail 102. When the slider 2 moves away from the base 1, one end of the column 5 slides in the arc groove 204, and the other end of the column 5 moves along the upper bent portion 1033, thereby overcoming the elastic force of the tension spring 3 and limiting the slider 2 at the end away from the damper 4 cylinder body, so that the drawer is in an open state.

[0045] Since the long groove 1021 is gradually inclined and contracted, when the column 5 slides into the long groove 1021 near one end of the damper 4 or is pushed out from the long groove 1021 near one end of the damper 4, the resistance is relatively large, which increases the difficulty of opening or closing the drawer. In order to solve the above technical problems, an L-shaped clearance groove 104 is opened at one end of the slide rail 102 near the cylinder body of the damper 4. The clearance groove 104 is located above the long groove 1021. The clearance groove 104 is connected to the long groove 1021 to form an elastic block 105 When the slider 2 moves toward the base 1, the column 5 moves along the inner wall of the long groove 1021. The column 5 moves and contacts the inner wall of the long groove 1021. Through its contact and friction with the groove wall, the speed of the slider 2 moving toward the base 1 is effectively slowed down, making the contact between the slider 2 and the base 1 smoother, thereby greatly reducing the noise generated during the collision and improving the user experience. At the same time, the column 5 pushes the elastic block 105 to move in the give way groove 104, which also adds an additional buffering effect and further enhances the buffering effect.

[0046] Reference Figure 7 Furthermore, in order to buffer the contact between the slider 2 and the base 1, the side arm of the slider 2 away from the buffer spring 201 has a protrusion provided with an insert block 205, and the insert block 205 is set in a cone shape. The side wall of the base 1 facing the slider 2 is provided with an insert slot 106 adapted to the insert block 205. When the slider 2 moves toward the base 1, the elastic block 105 acts as a primary buffer for the slider 2, and the insert block 205 is inserted into the insert slot 106 to act as a secondary buffer for the slider 2. The contact between the insert block 205 and the inner wall of the insert slot 106 plays a deceleration effect, thereby realizing double buffering when the slider 2 contacts the base 1. First, the elastic block 105 provides a primary buffer to slow down the initial impact speed of the slider 2; then, the insert block 205 is gradually inserted into the insertion slot 106, further dispersing and absorbing the impact force, thereby greatly reducing the impact force when the slider 2 is in direct contact with the base 1. The smooth contact and gradual insertion process between the insertion block 205 and the insertion slot 106 make the contact between the slider 2 and the base 1 softer, reducing the noise caused by collision. Secondly, the tapered design of the insertion block 205 helps to guide the slider 2 into the insertion slot 106 smoothly, avoiding jamming or collision caused by offset or shaking. After the insertion block 205 is inserted into the insertion slot 106, it forms a tighter connection with the base 1, which helps prevent the slider 2 from shaking or falling off when subjected to external force. It is especially important for occasions that need to withstand large loads or frequent use.

[0047] Reference Figure 7Regarding the specific structure of the insert block 205, it is conical in shape, with a first cylindrical portion 2051 disposed between the insert block 205 and the sidewall of the slider 2. The axial length of the first cylindrical portion 2051 is one-fifth of the axial length of the insert block 205, and the diameter of the first cylindrical portion 2051 is equal to the bottom diameter of the insert block 205. Furthermore, the insert slot 106 is provided with a second cylindrical portion corresponding to the first cylindrical portion 2051. The first cylindrical portion 2051 serves as a transition between the insert block 205 and the sidewall of the slider 2, thereby enhancing the connection strength between the insert block 205 and the slider 2. This design prevents the insert block 205 from falling off or loosening from the slider 2 when subjected to external forces, improving the stability and reliability of the overall structure, dispersing contact pressure, and reducing wear caused by excessive localized pressure, thereby extending the service life of the insert block 205 and the insert slot 106.

[0048] Example 2: Figure 1-11 As shown, a drawer slide 102 includes a slide rail 102 buffer device in embodiment 1, further including an outer rail 701, a guide rail 702, an inner rail 703, and a shift block 704. The buffer device is assembled at one end of the outer rail, the guide rail 702 is slidably assembled in the outer rail 701 and moves back and forth toward the buffer device, the inner rail 703 slides in the guide rail 702 and moves back and forth toward the buffer device, the shift block 704 is connected to the inner wall of the inner rail 703 facing the guide rail 702 and is used to push the column 5 to slide out of the upper bent portion 1033. Specifically, the shift block 704 04 is provided with a groove at one end facing the column 5 for engaging or disengaging with the column 5. When the inner rail 703 moves toward the buffer device, the shift block 704 engages with the column 5, pushing the column 5 to slide out from the upper bend 1033, so that the slider 2 moves toward the base 1. When the guide rail 702 moves, the side wall of the guide rail 702 contacts the buffer spring 201, so that the buffer space 2011 is squeezed, thereby having a buffering effect on the guide rail 702, reducing the noise generated when the guide rail 702 contacts the buffer device, and improving the user experience.

[0049] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and such modifications or substitutions should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A slide rail buffer device, comprising a base, a slider, a tension spring, and a damper, wherein the slider is slidably assembled with the base, the ends of the tension spring are respectively connected to the side walls of the base and the side walls of the slider, the cylinder of the damper is connected to the base, and the push rod of the damper is connected to the slider. Two groups of tension springs are provided and are respectively located on the upper and lower sides of the damper, characterized in that: A buffer spring is provided on the other side wall of the sliding block away from the tension spring. The buffer spring is provided with at least two groups of buffer spaces. Two groups of buffer springs are provided corresponding to the tension spring.

2. The slide rail buffer device according to claim 1, characterized in that: The buffer springs are arranged in a wave shape to form three groups of buffer spaces.

3. A slide rail buffer device according to claim 1 or 2, characterized in that: A plane portion is provided on the side wall of the buffer elastic piece away from the slider, and the plane portion is parallel to the other side wall of the slider away from the tension spring.

4. The slide rail buffer device according to claim 1, characterized in that: The side wall of the base has a protruding slide rail, the extension direction of the slide rail is the same as the pushing direction of the push rod of the damper, and the slider is provided with a slide groove for sliding assembly with the slide rail.

5. The slide rail buffer device according to claim 1, characterized in that: It also includes a column, and the sliding rail is provided with a long groove at one end toward the slider. One end of the column is assembled with the slider, and one end of the column slides on the inner wall of the long groove. The inner wall of the long groove is gradually contracted from the side away from the damper cylinder body toward the side close to the damper cylinder body.

6. The slide rail buffer device according to claim 5, characterized in that: It also includes a rotary vane, wherein one end of the long groove away from the damper cylinder body is bent upward to form an upper bent portion, the column is connected to the rotary vane, the slider is provided with an arc-shaped groove, and the arc-shaped groove is bent toward the upper bent portion, and the two ends of the column are respectively slidably assembled in the long groove and the arc-shaped groove.

7. The slide rail buffer device according to claim 6, characterized in that: An L-shaped clearance groove is provided at one end of the slide rail close to the damper cylinder body. The clearance groove is located above the long groove. The clearance groove is connected to the long groove to form an elastic block.

8. The slide rail buffer device according to claim 6, characterized in that: The side arm of the slider away from the buffer spring has a protrusion with an insertion block, the insertion block is arranged in a cone shape, and the side wall of the base facing the slider is provided with an insertion groove adapted to the insertion block.

9. The slide rail buffer device according to claim 8, characterized in that: The insertion block is arranged in a conical shape, and a first cylindrical portion is arranged between the insertion block and the side wall of the slider.

10. A drawer slide, characterized in that: A slide rail buffer device comprising any one of claims 6 to 9, further comprising an outer rail, a guide rail, an inner rail, and a shift block, wherein the buffer device is assembled at one end of the outer rail, the guide rail is slidably assembled in the outer rail and moves back and forth toward the buffer device, the inner rail slides in the guide rail and moves back and forth toward the buffer device, and the shift block is connected to the inner wall of the inner rail toward the guide rail and is used to push the column to slide out of the upper bend.

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