Miniature ball guide sleeve structure with position-limiting protection

Abstract

The utility model relates to the technical field of ball guide sleeve, disclose a kind of miniature ball guide sleeve structure with limit protection, including guide sleeve shell, the inside sliding of guide sleeve shell is connected with retainer, the inside of guide sleeve shell is equipped with sliding slot, the outer wall sliding of retainer is connected with sliding block, the outer wall of retainer is equipped with limit slot, the outer wall sliding of sliding block is connected in the inner wall of limit slot, the inner wall sliding of sliding block is connected in the inner wall of sliding slot, the inside sliding of sliding block is connected with connecting column, the outer wall of connecting column is fixedly connected with the one end of spring one, the other end of spring one is fixedly connected in the inside of sliding block, in the utility model, the mutual cooperation between sliding block, connecting column, spring one can limit the travel of retainer, prevent retainer from sliding out from the both ends of guide sleeve, and reach the axial movement of absorption and blocking retainer due to inertia by spring one, protect precision raceway from impact damage.

Description

Technical Field

[0001] This utility model relates to the field of ball bearing guide sleeve technology, and in particular to a miniature ball bearing guide sleeve structure with limit protection. Background Technology

[0002] A ball bushing is a precision mechanical component that achieves high-precision, low-friction linear motion through internal circulating balls. It consists of a bushing housing, an internal ball cage, circulating balls, and mating guide posts (shafts). In miniaturized, high-precision applications, the internal cage of the ball bushing is prone to axial movement or even detachment under high-speed motion, sudden stops, or vibration impacts. Once it deviates from its designed position, the entire ball circulation system will immediately fail, leading to motion jamming and loss of precision. Therefore, a miniature ball bushing structure with limit protection is required.

[0003] A miniature ball bearing guide sleeve structure with limit protection essentially provides a built-in mechanical safety for the ball circulation system of the guide sleeve, ensuring stable and reliable operation even under high speed, high load, or installation errors. In existing technologies, conventional miniature ball bearing guide sleeves often lack a reliable internal limit mechanism. This makes the internal cage prone to axial movement or even disengagement from both ends of the guide sleeve under high-speed movement, sudden stops, or vibration impacts, directly leading to the collapse of the ball circulation system, movement jamming, loss of precision, and easily causing irreversible damage. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a miniature ball bearing guide sleeve structure with limit protection, which aims to improve the problem that conventional miniature ball bearing guide sleeves often lack a reliable internal limit mechanism, which can easily lead to irreversible damage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a miniature ball bearing guide sleeve structure with limiting protection, comprising a guide sleeve outer shell, a retainer slidably connected inside the guide sleeve outer shell, a sliding groove formed inside the guide sleeve outer shell, a sliding block slidably connected to the outer wall of the retainer, a limiting groove formed on the outer wall of the retainer, the outer wall of the sliding block slidably connected to the inner wall of the limiting groove, the outer wall of the sliding block slidably connected to the inner wall of the sliding groove, a connecting post slidably connected inside the sliding block, one end of a spring fixedly connected to the outer wall of the connecting post, the other end of the spring fixedly connected to the inside of the sliding block, the outer wall of the connecting post abutting against the inner wall of the guide sleeve outer shell, and a limiting component provided inside the sliding block.

[0006] The above technical solution works as follows: when the cage moves, it drives the sliding block to move, and the movement of the sliding block causes the connecting column to move synchronously. When the connecting column moves and comes into contact with the outer wall of the guide sleeve housing, it will compress the spring. The contact between the connecting column and the spring can achieve a limiting effect, thereby limiting the stroke of the cage and preventing the cage from sliding out from both ends of the guide sleeve, thus avoiding the complete collapse of the circulation system. At the same time, it can absorb and block the axial movement of the cage caused by inertia, protecting the precision raceway from impact damage.

[0007] Preferably, the limiting component includes a limiting frame, the outer wall of which is fixedly connected to the inside of the sliding block, a sliding column is slidably connected inside the limiting frame, a locking column is fixedly connected to the outer wall of the sliding column, and the outer wall of the locking column is locked inside the limiting frame.

[0008] Preferably, a rotating block is fixedly connected to the upper surface of the sliding column, and the outer wall of the sliding column is slidably connected to the inside of the sliding block.

[0009] Preferably, the sliding column is rotatably connected to a connecting rod, and a spring is sleeved on the outer wall of the connecting rod.

[0010] Preferably, the top end of the second spring is fixedly connected to the inside of the sliding block, and the bottom end of the second spring is fixedly connected to the upper surface of the wedge block.

[0011] Preferably, a wedge block is fixedly connected to the outer wall of the connecting rod, and the outer wall of the wedge block is slidably connected to the inside of the sliding block.

[0012] Preferably, the outer wall of the wedge block is slidably connected to a limiting post, the outer wall of the limiting post is slidably connected to the inside of the sliding block, the outer wall of the limiting post is engaged with the inside of the retainer, the inside of the retainer is provided with a limiting hole, and the outer wall of the limiting post is engaged with the inside of the limiting hole.

[0013] Preferably, one end of the spring three is fixedly connected to the outer wall of the limiting post, and the other end of the spring three is fixedly connected to the inside of the sliding block.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the cooperation between the sliding block, the connecting column, and the spring can limit the stroke of the cage, prevent the cage from sliding out from both ends of the guide sleeve, avoid the complete collapse of the circulation system, and absorb and block the axial movement of the cage caused by inertia through the spring, protect the precision raceway from impact damage, and significantly extend the overall life of the guide sleeve.

[0016] 2. In this utility model, the sliding column, connecting rod, wedge block, limiting column, spring three, limiting hole, and spring two are electrically coordinated to adjust the position of the sliding block, so as to customize the movement distance of the cage when special use requirements are met, improve the flexibility of use, and also achieve quick disassembly for easy replacement. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a miniature ball bearing guide sleeve structure with limiting protection proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of a sliding block wedge with a limiting protection micro ball bearing guide sleeve structure proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the connecting column wedge block of a miniature ball bearing guide sleeve structure with limiting protection proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of a wedge block with a limiting protection micro ball bearing guide sleeve structure proposed in this utility model.

[0021] Legend:

[0022] 1. Guide sleeve housing; 2. Cage; 3. Slide groove; 4. Sliding block; 5. Connecting post; 6. Spring 1; 7. Limiting groove; 8. Limiting frame; 9. Sliding post; 10. Rotating block; 11. Locking post; 12. Connecting rod; 13. Spring 2; 14. Wedge block; 15. Limiting post; 16. Spring 3; 17. Limiting hole. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 3The present invention provides an embodiment of a miniature ball bearing guide sleeve structure with limiting protection, comprising a guide sleeve shell 1, a retainer 2 slidably connected inside the guide sleeve shell 1, a sliding groove 3 opened inside the guide sleeve shell 1, a sliding block 4 slidably connected to the outer wall of the retainer 2, a limiting groove 7 opened on the outer wall of the retainer 2, the outer wall of the sliding block 4 slidably connected to the inner wall of the limiting groove 7, the outer wall of the sliding block 4 slidably connected to the inner wall of the sliding groove 3, a connecting post 5 slidably connected inside the sliding block 4, one end of a spring 6 fixedly connected to the outer wall of the connecting post 5, the other end of the spring 6 fixedly connected to the inside of the sliding block 4, the outer wall of the connecting post 5 abutting against the inner wall of the guide sleeve shell 1, and a limiting component provided inside the sliding block 4;

[0025] Specifically, the guide sleeve housing 1 supports the cage 2 and also limits the offset of the cage 2. The ball bearings allow the cage 2 to move linearly back and forth inside the guide sleeve housing 1. The cage 2 supports the sliding block 4, the sliding block 4 supports the connecting post 5, and the sliding block 4 provides fixed support to the spring 6. When the cage 2 moves, it drives the connecting post 5 to move synchronously. By having the connecting post 5 press against the inner wall of the guide sleeve housing 1, the cage 2 can be prevented from moving excessively, thus achieving the effect of limiting and preventing offset. At the same time, the spring 6 absorbs and blocks the axial movement of the cage 2 caused by inertia under high-speed start-stop or external impact, protecting the precision raceway from impact damage.

[0026] Reference Figure 4 The limiting component includes a limiting frame 8, the outer wall of the limiting frame 8 is fixedly connected to the inside of the sliding block 4, a sliding column 9 is slidably connected inside the limiting frame 8, a locking column 11 is fixedly connected to the outer wall of the sliding column 9, and the outer wall of the locking column 11 is locked inside the limiting frame 8; a rotating block 10 is fixedly connected to the upper surface of the sliding column 9, and the outer wall of the sliding column 9 is slidably connected to the inside of the sliding block 4.

[0027] Specifically, the sliding block 4 has a fixing function on the limiting frame 8, the limiting frame 8 has a limiting offset function on the sliding column 9, so that the sliding column 9 can only move up and down, the sliding column 9 has a fixing function on the locking column 11, the limiting frame 8 has an L-shaped sliding groove inside, the sliding column 9 can drive the locking column 11 to move by moving, the sliding column 9 has a fixing function on the rotating block 10, rotating the rotating block 10 will cause the sliding column 9 to rotate, when rotating the sliding column 9 causes the locking column 11 to be locked on the bottom side of the sliding groove, it will have a limiting offset function on the locking column 11, thereby fixing the sliding column 9 inside the limiting frame 8 and preventing deviation.

[0028] Reference Figure 3 and Figure 4The sliding column 9 is rotatably connected to a connecting rod 12, and a spring 13 is sleeved on the outer wall of the connecting rod 12; the top end of the spring 13 is fixedly connected to the inside of the sliding block 4, and the bottom end of the spring 13 is fixedly connected to the upper surface of the wedge block 14; the outer wall of the connecting rod 12 is fixedly connected to the wedge block 14, and the outer wall of the wedge block 14 is slidably connected to the inside of the sliding block 4.

[0029] Specifically, the sliding column 9 supports the connecting rod 12. The movement of the sliding column 9 will drive the connecting rod 12 to move synchronously. The sliding block 4 supports and limits the offset of the connecting rod 12, so that the connecting rod 12 can only move up and down. The second spring 13 is set between the sliding column 9 and the connecting rod 12. When the sliding column 9 moves downward, the second spring 13 will be stretched. Through the elastic force of the second spring 13, the locking column 11 can be stably locked inside the limiting frame 8. At the same time, after the locking column 11 is released, the connecting rod 12 can return to its original position and move upward, which is convenient for the next use.

[0030] Reference Figure 4 The outer wall of the wedge block 14 is slidably connected to the limiting post 15. The outer wall of the limiting post 15 is slidably connected to the inside of the sliding block 4. The outer wall of the limiting post 15 is engaged with the inside of the retainer 2. The inside of the retainer 2 is provided with a limiting hole 17. The outer wall of the limiting post 15 is engaged with the inside of the limiting hole 17. One end of the spring 16 is fixedly connected to the outer wall of the limiting post 15. The other end of the spring 16 is fixedly connected to the inside of the sliding block 4.

[0031] Specifically, when the sliding column 9 drives the connecting rod 12 to move downward, the connecting rod 12 will drive the wedge block 14 to move downward, causing the wedge block 14 to press against the limiting column 15. The limiting column 15, under pressure, will move outward inside the sliding block 4 and become stuck inside the limiting hole 17 inside the retainer 2. The limiting column 15 being stuck inside the limiting hole 17 achieves a limiting and fixing function, ensuring the stability of the sliding block 4's position. It also allows for quick replacement, facilitating the removal and replacement of the sliding block 4. Furthermore, the limiting column 15... The position of the sliding block 4 can be adjusted inside the limiting hole 17, so that the movement distance of the cage 2 can be adjusted according to special usage requirements, improving the flexibility of use. At the same time, it can adapt to asymmetrical loads or installation errors, ensuring that the ball is optimally supported in all working positions and avoiding premature wear due to long-term offset operation in a certain direction. When the limiting post 15 moves, the spring 16 will be squeezed. After the wedge block 14 stops squeezing the limiting post 15, the elastic force of the spring 16 will cause the limiting post 15 to return to its original position.

[0032] Working principle: When needed, the movement of the retainer 2 drives the sliding block 4 to move synchronously. The movement of the sliding block 4 causes the connecting post 5 to move. After the movement, the outer wall of one end of the connecting post 5 will fit against the outer wall of the guide sleeve housing 1. When it continues to move, the connecting post 5 will move inside the sliding block 4 and move the spring 6. When the connecting post 5 moves inside the sliding block 4, it will activate the limiting function of the retainer 2 to prevent the retainer 2 from sliding out from both ends of the guide sleeve and avoid the complete collapse of the circulation system.

[0033] By pressing the rotating block 10, the sliding column 9 can move inside the limiting frame 8, and drive the locking column 11 to move inside the limiting frame 8. Rotating the rotating block 10 causes the sliding column 9 to rotate, which can lock the locking column 11 into the sliding groove of the limiting frame 8. When the sliding column 9 moves, the connecting rod 12 will also move synchronously. The movement of the connecting rod 12 will drive the wedge block 14 to move, causing the wedge block 14 to squeeze the limiting column 15. When the limiting column 15 is squeezed, it will move outward inside the sliding block 4 and then lock into the limiting hole 17, achieving the function of quickly adjusting the position of the sliding block 4. This allows for customized limitation of its movement distance under special usage requirements. This device can not only limit the stroke and prevent the retainer 2 from sliding out from both ends of the guide sleeve, avoiding complete collapse of the circulation system, but also customize the movement distance of the retainer 2 under special usage requirements, improving the flexibility of use.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A miniature ball bearing guide sleeve structure with limiting protection, comprising a guide sleeve housing (1), characterized in that: The guide sleeve housing (1) is slidably connected to a retainer (2). The guide sleeve housing (1) is provided with a sliding groove (3). The outer wall of the retainer (2) is slidably connected to a sliding block (4). The outer wall of the retainer (2) is provided with a limiting groove (7). The outer wall of the sliding block (4) is slidably connected to the inner wall of the limiting groove (7). The outer wall of the sliding block (4) is slidably connected to the inner wall of the sliding groove (3). The inner wall of the sliding block (4) is slidably connected to a connecting post (5). One end of a spring (6) is fixedly connected to the outer wall of the connecting post (5). The other end of the spring (6) is fixedly connected to the inner wall of the sliding block (4). The outer wall of the connecting post (5) abuts against the inner wall of the guide sleeve housing (1). The inner wall of the sliding block (4) is provided with a limiting component.

2. The miniature ball bearing guide sleeve structure with limiting protection according to claim 1, characterized in that: The limiting component includes a limiting frame (8), the outer wall of which is fixedly connected to the inside of the sliding block (4), a sliding column (9) is slidably connected inside the limiting frame (8), a locking column (11) is fixedly connected to the outer wall of the sliding column (9), and the outer wall of the locking column (11) is locked inside the limiting frame (8).

3. The miniature ball bearing guide sleeve structure with limiting protection according to claim 2, characterized in that: The upper surface of the sliding column (9) is fixedly connected to a rotating block (10), and the outer wall of the sliding column (9) is slidably connected to the inside of the sliding block (4).

4. The miniature ball bearing guide sleeve structure with limiting protection according to claim 2, characterized in that: The sliding column (9) is rotatably connected to a connecting rod (12), and a spring (13) is sleeved on the outer wall of the connecting rod (12).

5. A miniature ball bearing guide sleeve structure with limiting protection according to claim 4, characterized in that: The top end of the second spring (13) is fixedly connected to the inside of the sliding block (4), and the bottom end of the second spring (13) is fixedly connected to the upper surface of the wedge block (14).

6. The miniature ball bearing guide sleeve structure with limiting protection according to claim 4, characterized in that: The outer wall of the connecting rod (12) is fixedly connected to a wedge block (14), and the outer wall of the wedge block (14) is slidably connected to the inside of the sliding block (4).

7. A miniature ball bearing guide sleeve structure with limiting protection according to claim 6, characterized in that: The outer wall of the wedge block (14) is slidably connected to a limiting post (15), the outer wall of the limiting post (15) is slidably connected to the inside of the sliding block (4), the outer wall of the limiting post (15) is engaged in the inside of the retainer (2), the inside of the retainer (2) is provided with a limiting hole (17), and the outer wall of the limiting post (15) is engaged in the inside of the limiting hole (17).

8. A miniature ball bearing guide sleeve structure with limiting protection according to claim 7, characterized in that: One end of a spring three (16) is fixedly connected to the outer wall of the limiting post (15), and the other end of the spring three (16) is fixedly connected to the inside of the sliding block (4).

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