Anti-rotation gas spring
By setting an anti-rotation mechanism inside the gas spring body, and using the meshing of the motor-driven gear and internal gear, the piston rod is limited, which solves the problem of piston rod rotation and displacement, ensures uniform force distribution, and extends the service life of the gas spring.
Patent Information
- Application Number
- CN202520227726.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-12
AI Technical Summary
When using existing gas springs, the piston rod is prone to rotation and displacement, resulting in uneven force distribution and potential damage.
An anti-rotation gas spring was designed. By setting an anti-rotation mechanism inside the gas spring body, the motor drives the gear and internal gear to mesh, driving the push block and the locking block to move in the slide groove, thereby limiting the piston rod and preventing rotation.
It effectively prevents the piston rod from rotating during extension and retraction, ensuring uniform force distribution, avoiding damage, and improving the service life of the gas spring.
Smart Images
Figure CN223676875U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of gas spring, concretely is a kind of anti-rotation gas spring. BACKGROUND
[0002] Gas spring, also known as support rod, gas support angle adjuster, is a multifunctional industrial accessory;It is mainly composed of pressure cylinder, piston rod, piston, sealing guide sleeve and inert gas or oil gas mixture etc.;Its working principle is based on the compressibility of gas in closed pressure cylinder, and the pressure difference caused by the cross-sectional area difference of piston is used to realize the movement of piston rod;Gas spring has the functions of support, buffering, braking, height and angle adjustment, etc., and its advantages include slow movement speed, small dynamic force change and easy control.
[0003] The existing gas spring does not limit the piston rod during use, and the piston rod is prone to rotating displacement during extension and retraction, which can cause uneven stress on the piston rod and damage it. UTILITY MODEL CONTENTS
[0004] To achieve the above purpose, the utility model provides an anti-rotation gas spring.
[0005] The technical scheme of the utility model is realized as follows: an anti-rotation gas spring, comprising a gas spring body, a piston rod slidably connected inside the gas spring body, a limiting groove formed on the outside of the piston rod, an anti-rotation mechanism provided on the gas spring body for preventing the piston rod from rotating, a fixed shell fixedly connected to the outside of the gas spring body, a motor fixedly connected inside the fixed shell, a gear fixedly connected to the top of the motor, an internal gear rotatably connected inside the fixed shell, a push block fixedly connected to the top of the internal gear, a spring fixedly connected inside the fixed shell, a clamping block slidably connected inside the fixed shell, a first sliding block fixedly connected to the top of the clamping block, a sliding groove formed in the fixed shell, a recess formed in the bottom of the clamping block, and a connecting block fixedly connected inside the recess of the clamping block.
[0006] Preferably, the gear is meshingly connected with the internal gear.
[0007] Preferably, the spring is fixedly connected with the clamping block.
[0008] Preferably, the sliding block is "T"-shaped, and the first sliding block is slidably connected with the sliding groove in the fixed shell.
[0009] Preferably, one end of the connecting block is beveled.
[0010] Preferably, a second sliding block is fixedly connected to the bottom of the internal gear, and a ball bearing is rotatably connected inside the second sliding block.
[0011] Preferably, the fixed shell is internally provided with a sliding channel corresponding to the second sliding block, and the ball is in rolling contact with the sliding channel.
[0012] The utility model has the advantages of:
[0013] The anti-rotation gas spring is driven by the motor to rotate the gear, the gear drives the internal gear to rotate, the internal gear drives the second sliding block and the push block to rotate together, the second sliding block moves in the sliding channel in the fixed shell, the push block pushes the connecting block to move along the inclined surface of the connecting block, the connecting block drives the clamping block to move, and the clamping block stretches the spring, when the second sliding block moves to the end of the sliding channel, the push block pushes the clamping block to insert into the limiting groove of the piston rod, so that the piston rod can only move vertically during extension and retraction, which avoids rotation displacement of the piston rod during extension and retraction, and further ensures that the piston rod will not be damaged. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a schematic diagram of the relative position of the clamping block of the utility model;
[0016] Figure 3 It is a schematic diagram of the relative position of the connecting block of the utility model;
[0017] Figure 4 It is a schematic diagram of the relative position of the push block of the utility model;
[0018] Figure 5 It is a schematic diagram of the relative position of the ball of the utility model.
[0019] In the drawings, various reference signs are:
[0020] 1, gas spring body; 2, piston rod; 3, limiting groove; 4, anti-rotation mechanism; 401, fixed shell; 402, motor; 403, gear; 404, internal gear; 405, push block; 406, spring; 407, clamping block; 408, first sliding block; 409, sliding groove; 410, recess; 411, connecting block; 5, second sliding block; 6, ball. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0022] For example, Figures 1-5The embodiment shown provides an anti-rotation gas spring, which comprises a gas spring body 1, a piston rod 2 slidably connected inside the gas spring body 1, a limiting groove 3 formed on the outside of the piston rod 2, an anti-rotation mechanism 4 arranged on the gas spring body 1 and used for preventing the piston rod 2 from rotating, a fixed shell 401 fixedly connected to the outside of the gas spring body 1, a motor 402 fixedly connected inside the fixed shell 401, a gear 403 fixedly connected to the top of the motor 402, an internal gear 404 rotatably connected inside the fixed shell 401, a push block 405 fixedly connected to the top of the internal gear 404, a spring 406 fixedly connected inside the fixed shell 401, a clamping block 407 slidably connected inside the fixed shell 401, a first sliding block 408 fixedly connected to the top of the clamping block 407, a sliding groove 409 formed inside the fixed shell 401, a recess 410 formed on the bottom of the clamping block 407, and a connecting block 411 fixedly connected inside the recess 410 on the clamping block 407.
[0023] Further, the gear 403 is in meshing connection with the internal gear 404.
[0024] By adopting the above technical scheme, the internal gear 404 is driven to rotate by the gear 403.
[0025] Further, the spring 406 is fixedly connected with the clamping block 407.
[0026] By adopting the above technical scheme, the clamping block 407 can be reset after moving by the spring 406.
[0027] Further, the sliding block is in a "T" shape, and the first sliding block 408 is in sliding connection with the sliding groove 409 on the fixed shell 401.
[0028] By adopting the above technical scheme, the clamping block 407 can be kept stable during movement by the sliding block being in a "T" shape.
[0029] Further, one end of the connecting block 411 is a slope.
[0030] By adopting the above technical scheme, the push block 405 can move the connecting block 411 along the slope of the connecting block 411.
[0031] Further, a second sliding block 5 is fixedly connected to the bottom of the internal gear 404, and a ball 6 is rotatably connected inside the second sliding block 5.
[0032] Further, a sliding channel corresponding to the second sliding block 5 is arranged inside the fixed shell 401, and the ball 6 is in rolling contact with the sliding channel.
[0033] By adopting the above technical scheme, the rotation range of the internal gear 404 is limited by the sliding channel corresponding to the second sliding block 5 inside the fixed shell 401, and the ball 6 reduces the friction between the second sliding block 5 and the sliding channel, so that the internal gear 404 can rotate more flexibly and labor-savingly.
[0034] Working principle: when the gas spring body 1 is used, if the piston rod 2 needs to be limited, the motor 402 is started, the motor 402 drives the gear 403 to rotate, the gear 403 drives the internal gear 404 to rotate, the internal gear 404 drives the second sliding block 5 and the push block 405 to rotate together, the second sliding block 5 moves in the slide way in the fixed shell 401, the push block 405 moves into the recess 410 of the clamping block 407, and pushes the connecting block 411 along the inclined surface of the connecting block 411 to move, the connecting block 411 drives the clamping block 407 to move, the clamping block 407 drives the first sliding block 408 to slide in the sliding groove 409 on the fixed shell 401, at the same time, the clamping block 407 stretches the spring 406, when the second sliding block 5 moves to the end point of the slide way, the internal gear 404 cannot rotate any more, the push block 405 pushes the clamping block 407 to insert into the limiting groove 3 of the piston rod 2, so that the piston rod 2 can only move vertically when stretching and retracting, avoiding the rotation of the piston rod 2, if the piston rod 2 does not need to be limited, the motor 402 is reversed to rotate, the internal gear 404 is reversed to rotate, the internal gear 404 drives the push block 405 to move out of the range of the connecting block 411, the clamping block 407 has no pushing force any more, the elastic force of the spring 406 drives the clamping block 407 to reset, the clamping block 407 moves away from the limiting groove 3 of the piston rod 2, so that the piston rod 2 is not limited any more.
[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An anti-rotation gas spring comprising a gas spring body (1), characterized in that: The gas spring body (1) is internally connected with a piston rod (2) in a sliding mode, a limiting groove (3) is formed on the piston rod (2), a rotation preventing mechanism (4) is arranged on the gas spring body (1) for preventing the piston rod (2) from rotating, a fixed shell (401) is fixedly connected to the gas spring body (1), a motor (402) is fixedly connected to the inside of the fixed shell (401), a gear (403) is fixedly connected to the top of the motor (402), an internal gear (404) is rotatably connected to the inside of the fixed shell (401), a push block (405) is fixedly connected to the top of the internal gear (404), a spring (406) is fixedly connected to the inside of the fixed shell (401), a clamping block (407) is slidably connected to the inside of the fixed shell (401), a first sliding block (408) is fixedly connected to the top of the clamping block (407), a sliding groove (409) is formed in the inside of the fixed shell (401), a recess (410) is formed in the bottom of the clamping block (407), and a connecting block (411) is fixedly connected to the recess (410) in the clamping block (407).
2. A non-rotating gas spring according to claim 1, characterized in that: The gear (403) is meshingly connected with the internal gear (404).
3. The anti-rotation gas spring of claim 1, wherein: The spring (406) is fixedly connected with the clamping block (407).
4. The anti-rotation gas spring of claim 1, wherein: The sliding block is in a "T" shape, and the first sliding block (408) is slidably connected with the sliding groove (409) in the fixed shell (401).
5. The anti-rotation gas spring of claim 1, wherein: One end of the connecting block (411) is a slope.
6. A non-rotating gas spring according to claim 1, wherein: A second sliding block (5) is fixedly connected to the bottom of the internal gear (404), and a ball (6) is rotatably connected to the inside of the second sliding block (5).
7. The anti-rotation gas spring of claim 1 or 6, wherein: The fixed shell (401) is internally provided with a slide corresponding to the second sliding block (5), and the ball (6) is in rolling contact with the slide.