Dustproof low-maintenance cost lead screw guide rail module
By installing a bellows telescopic dust cover and an arc-shaped slide groove protrusion structure on the outside of the lead screw guide module, the problem of jamming caused by dust ingress is solved, achieving normal operation and high-precision motion with low maintenance costs.
Patent Information
- Application Number
- CN202521163473.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-12
- Estimated Expiration
- 2035-06-09
AI Technical Summary
When existing lead screw guide modules are used in dusty environments, dust particles can easily enter the ball grooves and the inside of the lead screw nut, causing the slider and guide rail to jam, affecting service life and operating accuracy.
An accordion-style telescopic dust cover is used to cover the outside of the lead screw module, and an arc-shaped groove and protrusion structure is designed on the linear guide rail. The slider slides in the arc-shaped groove through the arc-shaped protrusion, eliminating the rolling element design. The dust cover extends and retracts with the movement to prevent dust from entering.
It effectively prevents dust from entering, ensuring the module operates normally in dusty environments, extending its service life and reducing maintenance costs.
Smart Images

Figure CN224352339U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of linear guide technology, and in particular to a dustproof and low-maintenance lead screw guide module. Background Technology
[0002] A lead screw and guide rail module is a common transmission structure in the mechanical field. It is a mechanical structure that provides linear motion and typically includes a linear guide rail, an electric cylinder, and a lead screw module. A lead screw nut is fitted onto the lead screw. A motor drives the lead screw to rotate, and the rotation of the lead screw causes the lead screw nut to move back and forth, thus converting rotational motion into linear motion. A slider fixed to the nut then slides, driving the linear guide rail to reciprocate in a linear motion.
[0003] When ball screw guide modules are used in dusty environments, external dust particles enter the module during operation. When the module performs reciprocating linear motion, these tiny particles enter the ball grooves of the linear guide and the inside of the ball screw nut. This can easily cause jamming of the rolling elements between the slider and the guide rail, as well as jamming between the ball screw nut and the ball screw, affecting the service life and operating accuracy of the ball screw guide module. Summary of the Invention
[0004] The purpose of this invention is to solve the problem that when current lead screw guide modules are used in dusty environments, external dust particles enter the module during operation. When the module resumes reciprocating linear motion, these tiny particles enter the ball grooves of the linear guide and the inside of the lead screw nut, easily causing jamming of the rolling elements between the slider and the guide rail, as well as jamming between the lead screw nut and the lead screw. This affects the service life and operating accuracy of the lead screw guide module. Therefore, a dustproof, low-maintenance lead screw guide module is needed to solve the above-mentioned technical problems.
[0005] A dustproof and low-maintenance lead screw guide module, characterized in that it includes a linear guide assembly, a lead screw module, a base, a motor, a dust cover, and an L-shaped connecting platform. The linear guide assembly consists of a linear guide and a slider, with the slider slidably assembled on the linear guide. The lead screw module consists of a lead screw and a ball screw nut. The base is a U-shaped base, consisting of two side plates and a horizontal plate. The two side plates are located at opposite ends of the horizontal plate. The linear guide assembly and the lead screw module are respectively assembled on both sides of the horizontal plate along its length, and are parallel to each other. The motor is fixedly assembled on the outside of one of the side plates. The output shaft of the motor passes through the side plate and is connected to the lead screw module for transmission. The slider and the ball screw nut are connected by an L-shaped connecting platform. The dust cover is assembled on the outside of the lead screw module. The upper two sides of the linear guide are provided with arc-shaped grooves. The bottom of the slider is provided with an opening. Arc-shaped protrusions are provided on both sides of the opening. The arc-shaped protrusions and the arc-shaped grooves correspond to and match each other. There are no rolling elements in the linear guide assembly. The slider is assembled on the linear guide by the arc-shaped protrusions in the arc-shaped grooves.
[0006] Furthermore, the base is a one-piece structure.
[0007] Furthermore, the arc-shaped groove extends through the entire axial direction of the linear guide rail.
[0008] Furthermore, the arc-shaped protrusion extends throughout the axial direction of the entire slider.
[0009] Furthermore, there are two dust covers, which are respectively assembled on both sides of the lead screw module. One end of the dust cover is fixedly connected to the side plate, and the other end is fixedly connected to the L-shaped connecting platform. The dust cover is a accordion telescopic dust cover.
[0010] Compared with existing technologies, the advantages of this utility model include: Firstly, the lead screw guide module provided by this utility model features a telescopic accordion dust cover on the outside of the lead screw module. This telescopic dust cover is retractable and does not affect the reciprocating motion of the lead screw module. It prevents external dust and debris from entering the lead screw module, thus not affecting its operation. Secondly, the linear guide assembly does not have rolling elements; the slider is assembled within an arc-shaped groove via arc-shaped protrusions, allowing for simple assembly. External debris entering the linear guide device will not cause jamming or affect its operation. When used in dusty environments, the lead screw guide module provided by this utility model prevents external dust particles from easily entering the module, ensuring its service life and operational accuracy, and reducing maintenance costs. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0012] Figure 1 This is a front view of the structure of a dustproof and low-maintenance lead screw guide module provided in this embodiment of the utility model, with the dust cover removed;
[0013] Figure 2 This is a schematic diagram of the structure of a dustproof and low-maintenance lead screw guide module provided in this embodiment of the utility model;
[0014] Figure 3 This is a top view of a dustproof and low-maintenance lead screw guide module provided in this embodiment of the utility model, without the dust cover;
[0015] Figure 4 This is a schematic diagram of the slider structure in a dustproof and low-maintenance lead screw guide module provided in this embodiment of the utility model;
[0016] Figure 5 This is a schematic diagram of the linear guide rail in a dustproof and low-maintenance screw guide rail module provided in this embodiment of the utility model;
[0017] In the attached diagram: 1. Linear guide rail assembly; 2. Lead screw module; 3. Base; 4. Motor; 5. Dust cover; 6. L-shaped connecting platform; 101. Linear guide rail; 102. Slider; 201. Lead screw; 202. Ball screw nut; 301. Side plate; 302. Horizontal plate; 1011. Arc-shaped groove; 1021. Opening; 10211. Arc-shaped protrusion. Detailed Implementation
[0018] In view of the shortcomings of the prior art, this invention, through long-term research and extensive practice, has yielded the technical solution of this utility model. The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments.
[0019] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, Figure 1 This is a front view of the structure of a dustproof and low-maintenance lead screw guide module provided in this embodiment of the utility model, with the dust cover removed; Figure 2 This is a schematic diagram of the structure of a dustproof and low-maintenance lead screw guide module provided in this embodiment of the utility model; Figure 3 This is a top view of a dustproof and low-maintenance lead screw guide module provided in this embodiment of the utility model, without the dust cover; Figure 4This is a schematic diagram of the slider structure in a dustproof and low-maintenance lead screw guide module provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the linear guide rail structure in a dustproof and low-maintenance lead screw guide rail module provided in this utility model embodiment; a dustproof and low-maintenance lead screw guide rail module, characterized in that: it includes a linear guide rail assembly 1, a lead screw module 2, a base 3, a motor 4, a dust cover 5, and an L-shaped connecting platform 6. The linear guide rail assembly 1 is composed of a linear guide rail 101 and a slider 102. The slider 102 is slidably assembled on the linear guide rail 101. The upper two sides of the linear guide rail 101 are provided with arc-shaped sliding grooves 1011, which penetrate the axial direction of the entire linear guide rail 101. The bottom of the slider 102 is provided with an opening 1021, and the two sides of the opening 1021 are provided with arc-shaped... The arc-shaped protrusion 10211 extends through the entire axial direction of the slider 102. The arc-shaped protrusion 10211 corresponds to and matches the arc-shaped groove 1011. The linear guide assembly 1 does not contain rolling elements. The slider 102 is slidably assembled onto the linear guide 101 by being mounted within the arc-shaped groove 1011 via the arc-shaped protrusion 10211. The arc-shaped protrusion 10211 slides within the arc-shaped groove 1011, replacing the ball bearings of existing linear guides. The overall device is simple and convenient to assemble, requires no maintenance, and can accurately complete reciprocating motion even in dusty environments without jamming. The lead screw module 2 consists of a lead screw 201 and a ball screw nut 202. The base 3 is a U-shaped base, an integral structure consisting of two side plates 301 and a horizontal plate 302. The two side plates 301 are located at opposite ends of the horizontal plate 302. The linear guide rail assembly 1 and the lead screw module 2 are respectively assembled on both sides of the horizontal plate 302 along its length. The linear guide rail assembly 1 and the lead screw module 2 are parallel to each other. The motor 4 is fixedly assembled on the outside of one of the side plates 301. The output shaft of the motor 4 passes through the side plate 301 and is connected to the lead screw module 2 for transmission. When the motor 4 is started, it drives the lead screw 201 in the lead screw module to rotate. The rotational motion of the lead screw 201 is converted into linear motion, which drives the ball screw nut 202 to move. Because the slider 102 and the ball screw nut 202 are connected by the L-shaped connecting platform 6, the ball screw nut 202 drives the slider 102 to move, thereby completing the reciprocating motion of the screw guide module. The dust cover 5 is assembled on the outside of the screw module 2. There are two dust covers 5, which are respectively assembled on both sides of the screw module 2. One end of the dust cover 5 is fixedly connected to the side plate 301, and the other end is fixedly connected to the L-shaped connecting platform 6. The dust cover 5 is an accordion telescopic dust cover. The dust cover 5 extends and retracts with the reciprocating motion of the screw module, which can effectively prevent dust from entering the screw module, avoid jamming during use, and ensure the service life and operating accuracy of the screw module.
[0020] Preferably, the horizontal plate directly below the lead screw module can be designed as a hollow structure, allowing dust to leak out through the central hole, further ensuring the service life and operational accuracy of the lead screw module.
[0021] This utility model provides a dustproof and low-maintenance lead screw guide module. It should be understood that the above embodiments are merely illustrative of the technical concept and features of this utility model, intended to enable those skilled in the art to understand its content and implement it accordingly, and should not be construed as limiting the scope of protection of this utility model. Any simple modifications and substitutions made using the content of this utility model are included within the scope of protection of this utility model.
Claims
1. A dustproof and low-maintenance lead screw guide module, characterized in that: The system includes a linear guide assembly, a lead screw module, a base, a motor, a dust cover, and an L-shaped connecting platform. The linear guide assembly consists of a linear guide and a slider, with the slider slidably mounted on the linear guide. The lead screw module consists of a lead screw and a ball screw nut. The base is a U-shaped base, composed of two side plates and a cross plate. The two side plates are located at opposite ends of the cross plate. The linear guide assembly and the lead screw module are respectively assembled on both sides of the cross plate along its length, and are parallel to each other. The motor is fixedly mounted on the platform. On the outer side of one side plate, the output shaft of the motor passes through the side plate and is connected to the lead screw module for transmission. The slider and the ball screw nut are connected by an L-shaped connecting platform. The dust cover is assembled on the outer side of the lead screw module. The upper two sides of the linear guide rail are provided with arc-shaped grooves. The bottom of the slider is provided with an opening. Arc-shaped protrusions are provided on both sides of the opening. The arc-shaped protrusions and arc-shaped grooves correspond to and match each other. There are no rolling elements in the linear guide rail assembly. The slider is assembled on the linear guide rail by the arc-shaped protrusions in the arc-shaped grooves.
2. The dustproof and low-maintenance cost lead screw guide module according to claim 1, characterized in that: The base is a one-piece structure.
3. The dustproof and low-maintenance cost lead screw guide module according to claim 1, characterized in that: The arc-shaped groove runs through the entire axial direction of the linear guide rail.
4. The dustproof and low-maintenance cost lead screw guide module according to claim 1, characterized in that: The arc-shaped protrusion extends through the entire axial direction of the slider.
5. A dustproof and low-maintenance screw guide module according to claim 1, characterized in that: There are two dust covers, which are respectively assembled on both sides of the lead screw module. One end of the dust cover is fixedly connected to the side plate, and the other end is fixedly connected to the L-shaped connecting platform. The dust cover is a accordion telescopic dust cover.