Limiting waterproof type linear module
By introducing limiting and waterproof designs into the linear module, the problems of stroke error and impact of the ball nut are solved, achieving precise positioning and waterproofing, and improving the module's positional accuracy and lifespan.
Patent Information
- Application Number
- CN202520075378.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2035-01-14
AI Technical Summary
In linear modules, the stroke error of the ball nut leads to a decrease in positional accuracy. Existing technologies lack an effective limiting mechanism, resulting in accumulated errors and impact on the guide rail.
The module is designed with limiting and waterproof components. The limiting components include a limiting rod and a limiting block to prevent the ball nut from moving. The waterproof components include a waterproof ring and a waterproof cover to prevent liquid from entering and maintain the module's lifespan.
It achieves accurate positioning of the ball nut, prevents cumulative errors and impacts, improves positional accuracy, and prevents moisture from entering the module, thus extending its service life.
Smart Images
Figure CN223549749U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of linear modules, specifically a limit-type waterproof linear module. Background Technology
[0002] The linear module contains a ball nut that drives the load in reciprocating motion. The position of the ball nut is controlled by the number of motor rotations and the direction of rotation during its movement within the linear module. Over time, the motor will experience stroke errors during the ball nut's movement, significantly reducing positional accuracy. Therefore, a limit mechanism is implemented to facilitate ball nut positioning and adjust the starting reference. Summary of the Invention
[0003] To achieve the above-mentioned objectives, this utility model provides a limiting and waterproof linear module, which adopts the following technical solution:
[0004] A limit-type waterproof linear module includes a guide rail, a ball screw pair is provided inside the guide rail, the ball screw pair includes a ball screw and a ball nut, the ball nut is connected to the ball screw, the two ends of the guide rail are provided with limit components for limiting the movement position of the ball nut, and the upper part of the guide rail is provided with a waterproof component.
[0005] Preferably, the limiting component includes a limiting rod and a limiting block, which are respectively connected to both ends of the guide rail.
[0006] Preferably, the limiting rod includes a limiting screw, a positioning nut is connected to the limiting screw, the front end of the limiting rod is a limiting post, the left end of the guide rail is provided with a threaded hole that matches the limiting screw, and the positioning nut abuts against the guide rail outside the threaded hole.
[0007] Preferably, the limiting block is inverted L-shaped, and includes a vertical part and a horizontal part, with the vertical part fixed to the right end of the guide rail by bolts.
[0008] Preferably, the waterproof component includes a waterproof ring, which is annular and square, and the top of the inner ring of the waterproof ring is provided with a raised water-retaining ring.
[0009] Preferably, the upper side of the waterproof ring is provided with a waterproof cover, a cover tail, and two waterproof plates. The waterproof cover is fixedly connected to the ball nut, the cover tail is fixed to the left side of the guide rail by bolts, and the two waterproof plates are fixed to the front and rear sides of the guide rail by bolts respectively.
[0010] Preferably, the guide rail is U-shaped, with a left connecting block and a motor base at both ends. The left connecting block and the motor base are connected to the end of the guide rail by bolts, and the two ends of the ball screw are rotatably connected to the left connecting block and the motor base, respectively.
[0011] The motor base has a coupling inside, and the motor is located at the right end of the coupling. The motor is connected to the motor base by bolts.
[0012] Compared with existing technologies, the limiting and waterproof linear module adopting the above technical solution has the following beneficial effects:
[0013] The waterproof linear module with limit function of this utility model allows the ball nut to move left and right within the guide rail during use. When the ball nut comes into contact with the limit component, it cannot continue to move and is positioned, which facilitates the ball nut to move from this starting point, prevents cumulative errors, and prevents the ball nut from hitting the guide rail. Attached Figure Description
[0014] Figure 1 This is a structural schematic diagram of the waterproof linear module with limiting function of this utility model.
[0015] Figure 2 This is a schematic diagram showing the disassembly of a waterproof linear module with limiting capabilities.
[0016] Figure 3 This is a schematic diagram of the internal structure of a waterproof linear module with limiting function.
[0017] Figure 4 This is a partial disassembly diagram of a waterproof linear module with limiting capabilities.
[0018] Reference numerals in the attached diagram: 1. Guide rail; 11. Ball screw; 12. Ball nut; 13. Left connecting block; 14. Motor base; 15. Coupling; 2. Limiting rod; 21. Limiting screw; 22. Positioning nut; 23. Limiting post; 3. Limiting block; 4. Waterproof ring; 5. Waterproof cover; 6. Cover tail; 7. Waterproof plate; 8. Motor. Detailed Implementation
[0019] The present invention will now be further described with reference to the accompanying drawings.
[0020] like Figures 1 to 4As shown, a limit-type waterproof linear module includes a guide rail 1 and a ball screw assembly. The ball screw assembly is rotatably connected to both ends of the guide rail 1. The ball screw assembly includes a ball screw 11 and a ball nut 12. The ball nut 12 is slidably mounted on the ball screw 11. The ball nut 12 has four rows of circulating steel balls, one row each in the top, bottom, left, and right directions, which increases the contact area between the steel balls and the ball screw 11. The guide rail can store oil, and the ball nut and ball screw can be directly immersed in lubricating oil, which lubricates the contact surface between the ball nut and ball screw during operation, resulting in better lubrication. The guide rail 1 has limiting components at both ends to restrict the movement of the ball nut 12, preventing the ball nut 12 from colliding with the guide rail 1. During use, the ball nut 12 moves left and right within the guide rail 1. When the ball nut 12 comes into contact with the limiting component, it cannot continue to move and is positioned, allowing the ball nut 12 to use this as a starting reference for movement, preventing cumulative errors and impacts on the guide rail 1. The upper part of the guide rail 1 is equipped with a waterproof component, providing good waterproofing and preventing liquid from entering the ball screw assembly, effectively maintaining the lifespan of the linear module.
[0021] The limiting components include a limiting rod 2 and a limiting block 3, which are respectively connected to both ends of the guide rail 1. A limit switch can be installed at the end of the limiting rod 2. When the ball nut 12 approaches the limit switch, the limit switch will trigger a signal to stop the motor 8, thereby preventing the ball nut 12 from impacting.
[0022] The limiting rod 2 includes a limiting screw 21, on which a positioning nut 22 is connected. The length of the limiting post 23 extending into the guide rail 1 is adjusted by adjusting the position of the positioning nut 22 on the limiting post 23. The left end of the guide rail 1 has a threaded hole that matches the limiting screw 21. The positioning nut 22 abuts against the guide rail 1 outside the threaded hole. Two nuts can be provided for the positioning nut 22 to effectively prevent the limiting rod 2 from loosening due to vibration. The front end of the limiting rod 2 is the limiting post 23, which is inside the guide rail 1. The limiting post 23 can be made of metal or soft material. When the ball nut 12 moves to the left end of the guide rail 1, the side of the ball nut 12 abuts against the limiting post 23 for positioning.
[0023] The limiting block 3 is inverted L-shaped. The limiting block 3 includes a vertical part and a horizontal part. The vertical part is fixed to the right end of the guide rail 1 by bolts. The ball nut 12 has a stepped part at the top. When the ball nut 12 moves to the right end of the guide rail 1, the side of the horizontal part abuts against the stepped part, restricting the movement of the ball nut 12.
[0024] The waterproof component includes a waterproof ring 4, which is connected to the guide rail 1 by bolts. The waterproof ring 4 is made of a deformable soft material and is annular square. The top of the inner ring of the waterproof ring 4 is provided with a raised water-blocking ring, which effectively prevents water from flowing into the guide rail 1 from the gap.
[0025] The upper side of the waterproof ring 4 is provided with a waterproof cover 5, a cover tail 6 and two waterproof plates 7. The waterproof cover 5 is fixedly connected to the ball nut 12. The left end of the waterproof cover 5 is located inside the cover tail 6. The cover can slide left and right with the ball nut 12. The cover tail 6 is fixed to the left side of the guide rail 1 by bolts. The two waterproof plates 7 are fixed to the front and rear sides of the guide rail 1 by bolts respectively. The setting of the waterproof cover 5, cover tail 6 and waterproof plates 7 makes the linear module more beautiful and has the effect of blocking water and waterproofing.
[0026] The guide rail 1 is U-shaped, with a left connecting block 13 and a motor base 14 at both ends. The left connecting block 13 and the motor base 14 are connected to the ends of the guide rail 1 by bolts. The two ends of the ball screw 11 are rotatably connected to the left connecting block 13 and the motor base 14 respectively. The cover tail 6 and the limit rod 2 are both fixed on the outside of the left connecting block 13. The motor base 14 has a coupling 15 inside, and a motor 8 is located at the right end of the coupling 15. The motor 8 is connected to the motor base 14 by bolts. The linear module is directly connected to the motor 8.
[0027] The above description is a preferred embodiment of the present utility model. For those skilled in the art, several modifications and improvements can be made without departing from the principle of the present utility model, and these should also be considered within the protection scope of the present utility model.
Claims
1. A limit-type waterproof linear module, comprising a guide rail (1), wherein a ball screw assembly is provided within the guide rail (1), the ball screw assembly comprising a ball screw (11) and a ball nut (12), characterized in that, The ball nut (12) is connected to the ball screw (11). The guide rail (1) has limiting components at both ends to restrict the movement of the ball nut (12). The upper part of the guide rail (1) has waterproof components.
2. The limiting and waterproof linear module according to claim 1, characterized in that, The limiting component includes a limiting rod (2) and a limiting block (3), which are respectively connected to both ends of the guide rail (1).
3. The limiting and waterproof linear module according to claim 2, characterized in that, The limiting rod (2) includes a limiting screw (21), a positioning nut (22) is connected to the limiting screw (21), the front end of the limiting rod (2) is a limiting post (23), the left end of the guide rail (1) is provided with a threaded hole that matches the limiting screw (21), and the positioning nut (22) abuts against the guide rail (1) outside the threaded hole.
4. The limiting and waterproof linear module according to claim 3, characterized in that, The limiting block (3) is an inverted L-shape. The limiting block (3) includes a vertical part and a horizontal part. The vertical part is fixed to the right end of the guide rail (1) by bolts.
5. The limiting and waterproof linear module according to any one of claims 1-4, characterized in that, The waterproof component includes a waterproof ring (4), which is a ring-shaped square with a raised water-blocking ring on the top of the inner ring of the waterproof ring (4).
6. The limiting and waterproof linear module according to claim 5, characterized in that, The waterproof ring (4) is provided with a waterproof cover (5), a cover tail (6) and two waterproof plates (7) on the upper side. The waterproof cover (5) is fixedly connected to the ball nut (12). The cover tail (6) is fixed to the left side of the guide rail (1) by bolts. The two waterproof plates (7) are fixed to the front and rear sides of the guide rail (1) by bolts respectively.
7. The limiting and waterproof linear module according to claim 6, characterized in that, The guide rail (1) is U-shaped. The guide rail (1) has a left connecting block (13) and a motor seat (14) at both ends. The left connecting block (13) and the motor seat (14) are connected to the end of the guide rail (1) by bolts. The two ends of the ball screw (11) are rotatably connected to the left connecting block (13) and the motor seat (14) respectively.
8. The limiting and waterproof linear module according to claim 7, characterized in that, The motor base (14) is equipped with a coupling (15), and a motor (8) is located at the right end of the coupling (15). The motor (8) is connected to the motor base (14) by bolts.