Miniature linear shaft sleeve
By designing a miniature linear bushing, using a guide sleeve and copper sleeve structure to guide the linear movement of the shaft, and equipping it with a compression spring to achieve self-reset, the problems of large size and radial deflection in the existing technology are solved, and the stability and service life of the equipment are improved.
Patent Information
- Application Number
- CN202520386950.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Existing linear bushings are bulky in space-constrained scenarios, cannot self-reset, and the shaft is prone to radial deflection, resulting in poor stability and failing to meet high stability requirements.
Design a miniature linear bushing, comprising a bushing body, a guide sleeve, and a copper sleeve, with an internal movable shaft, a guide groove and a guide rod guiding the linear movement of the shaft, and equipped with a compression spring to achieve self-reset.
It achieves linear motion stability and self-reset of the shaft, reduces friction and vibration, and improves the stability and service life of the equipment.
Smart Images
Figure CN223725173U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of precision instrument, specifically, especially relates to a micro linear shaft sleeve. BACKGROUND
[0002] Linear shaft sleeve is a kind of key component for linear motion system, it is usually used to support and guide the linear motion of shaft or rod, reduce friction and wear.It is widely used in precision instrument, automation equipment, 3D printer, medical equipment and other fields.
[0003] The linear shaft sleeve commonly seen in prior art is composed of outer cylinder, ball retainer and ball, its structure volume is large, it is difficult to apply in the scene of limited space.
[0004] On the one hand, the internal structure of the linear shaft sleeve in prior art does not have guide and spring, shaft rod will occur radial deflection when carrying out linear motion, and cannot be automatically reset, it is not suitable for the field with higher stability requirement.
[0005] On the other hand, the existing micro ball shaft sleeve technology needs to externally guide and spring at the rear end of its structure, it cannot be made into a whole, resulting in that the volume cannot be small and the length cannot be short, and the application in the field of micro precision measuring instrument is greatly limited. SUMMARY
[0006] The utility model aims at at least one of the above technical problems in prior art to some extent. For this purpose, one purpose of the utility model is to provide a micro linear shaft sleeve with simple structure, shaft rod does not occur radial deflection when carrying out linear motion, and can be automatically reset, and the volume is small.
[0007] The technical scheme for solving the above technical problems of the utility model is as follows:
[0008] The micro linear shaft sleeve, characterized in that: including shaft sleeve main part and shaft rod, the one end of the shaft sleeve main part is provided with guide sleeve along its length direction, and the other end is provided with copper sleeve;The shaft rod is movably arranged in the guide sleeve and the copper sleeve, and the both ends of the shaft rod extend out of the both ends of the shaft sleeve main part through the guide sleeve and the copper sleeve.
[0009] The utility model has the advantages that: the shaft sleeve main part is usually cylindrical, which is convenient for processing and mounting and fixing to other equipment. The guide sleeve and the copper sleeve are arranged at the both ends in the shaft sleeve main part, so that the friction force is small when the shaft rod moves, the movement is smooth, and the motion is stable. The both ends of the shaft rod extending out of the shaft sleeve main part are convenient for the structural connection of the shaft rod and other equipment.
[0010] On the basis of the above technical scheme, the utility model can also be improved as follows:
[0011] The guide sleeve is provided with a guide groove along the length direction of the guide sleeve at one end, and the shaft rod is provided with a guide rod fixed and perpendicular to the shaft rod at the middle part, and the guide rod is movable in the guide groove.
[0012] The beneficial effect of the further scheme is that the shaft rod moves along a linear path in the shaft sleeve body guided by the guide groove and the guide rod, preventing the shaft rod from radial deviation.
[0013] Further, the guide sleeve is internally provided with a compression spring and a spring hole accommodating the compression spring, and the compression spring is located at one side of the guide rod and is sleeved on the outer surface of the shaft rod.
[0014] The beneficial effect of the further scheme is that the compression spring is arranged in the spring hole, the guide rod and the shaft rod are fixed, and the shaft rod is driven to automatically reset under the action of the compression spring. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a front view of the micro linear shaft sleeve of the utility model;
[0016] Figure 2 It is Figure 1 a sectional view;
[0017] Figure 3 It is a schematic diagram of the internal structure of the micro linear shaft sleeve of the utility model.
[0018] In the drawings, the components represented by each reference numeral are listed as follows:
[0019] 1, shaft sleeve body, 2, shaft rod;
[0020] 3, guide sleeve, 301, guide groove, 302, spring hole;
[0021] 4, copper sleeve, 5, guide rod, 6, compression spring. DETAILED DESCRIPTION
[0022] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.
[0023] For example, Figures 1 to 3As shown, a micro linear shaft sleeve comprises a sleeve body 1 and a shaft rod 2, a guide sleeve 3 is arranged at one end of the sleeve body 1 along the length direction, and a copper sleeve 4 is arranged at the other end; the shaft rod 2 is movably arranged in the guide sleeve 3 and the copper sleeve 4, and the two ends of the shaft rod 2 extend out of the two ends of the sleeve body 1 through the guide sleeve 3 and the copper sleeve 4.
[0024] In the above embodiment, the guide sleeve 3 is provided with a guide groove 301 at one end along the length direction, the middle part of the shaft rod 2 is provided with a guide rod 5 fixedly arranged on the shaft rod 2 and perpendicular to the shaft rod 2, and the guide rod 5 is movable in the guide groove 301.
[0025] In the above embodiment, the guide sleeve 3 is provided with a compression spring 6 and a spring hole 302 accommodating the compression spring 6, and the compression spring 6 is arranged at one side of the guide rod 5 and sleeved on the outer surface of the shaft rod 2.
[0026] In the embodiment, the sleeve body 1 is in a cylindrical structure, facilitating machining and mounting and fixing to other equipment. The guide sleeve 3 and the copper sleeve 4 arranged at the two ends of the sleeve body 1 are made of copper alloy having good wear resistance, heat conductivity, corrosion resistance and self-lubricating properties, and are mounted at the two ends of the sleeve body 1 by press-fitting or threaded connection, thereby reducing the friction when the shaft rod 2 moves, making the shaft rod 2 move smoothly and stably. The two ends of the shaft rod 2 extending out of the sleeve body 1 facilitate the structural connection of the shaft rod 2 with other equipment.
[0027] In the embodiment, the guide groove 301 guides the shaft rod 2 to move along a linear path in the sleeve body 1, preventing the shaft rod 2 from radially deviating. The shaft rod 2 only moves linearly in the sleeve body 1 without radial deviation, reducing vibration and shaking, effectively reducing the movement error of the shaft rod 2, improving the stability of the overall structure of the sleeve, and prolonging the service life.
[0028] In the embodiment, the compression spring 6 is arranged in the spring hole 302, the compression spring 6 is arranged at one side of the guide rod 5 and sleeved on the outer surface of the shaft rod 2, the guide rod 5 is fixed with the shaft rod 2, and the shaft rod 2 is automatically reset under the action of the compression spring 6.
[0029] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A micro linear bushing, characterized by: The utility model provides a kind of sleeve main part (1) and axle stem (2), the sleeve main part (1) is provided with guide sleeve (3) in one end along its length direction, and other end is provided with copper bushing (4);The inside of the guide sleeve (3) and the copper bushing (4) is provided with the movable axle stem (2), the axle stem (2) both ends are extended out the both ends of the sleeve main part (1) by passing the guide sleeve (3) and the copper bushing (4);The guide sleeve (3) one end is provided with the guide slot (301) along length direction, the middle part of the axle stem (2) is provided with the guide rod (5) that is fixed with the axle stem (2) and perpendicular, the guide rod (5) can be moved in the guide slot (301);The inside of the guide sleeve (3) is provided with compression spring (6) and spring hole (302) containing the compression spring (6), the compression spring (6) is located the side of the guide rod (5).