Ball wrench

Abstract

The utility model relates to the technical field of hot nozzle dismounting tool, specifically discloses a ball wrench. One end of outer sleeve is wrench end, the other end is locking end with opening and hollow, inner sleeve is hollow sleeve and can be assembled in the locking end of inner sleeve relatively rotatably with through, inner sleeve is equipped with the roller groove that distributes along the circumferential interval, outer sleeve inner wall is equipped with the arc groove that distributes along the circumferential interval and with roller groove one-to-one correspondence, the side of roller groove away from arc groove is equipped with roller opening, and roller opening width is less than roller diameter, and roller is contained between roller groove and arc groove, when inner sleeve and outer sleeve relatively rotate, arc groove will push out roller to roller opening. The utility model can effectively tighten or untighten operation to the hot nozzle work piece of light pole, and the operation is flexible and reliable, thereby not needing to process hexagonal shape on the hot nozzle work piece, and the machining procedure and mold opening frame cost are reduced significantly.

Description

Technical Field

[0001] The present invention relates to the technical field of ball bearing wrenches. Background Technology

[0002] In the field of hot nozzle assembly and disassembly, traditional tools typically rely on hexagonal machining to achieve the locking or unlocking of the hot nozzle. For example, common socket wrenches, open-end wrenches, and box wrenches all require hexagonal shapes to be machined into the hot nozzle workpiece so that the wrench can fit into the workpiece to achieve the assembly and disassembly operations. This traditional hexagonal machining method has many problems.

[0003] On the one hand, machining hexagonal shapes requires additional processing steps, which not only increases processing time and cost but may also lead to machining errors, affecting the precision and quality of the workpiece. On the other hand, machining hexagonal shapes requires the design and manufacture of specialized molds, increasing mold opening and maintenance costs. Furthermore, machining hexagonal shapes limits the design flexibility of hot-nozzle workpieces, potentially affecting the overall structure and appearance of the product. Existing hot-nozzle removal and assembly tools, due to the hexagonal shape limitation, may require frequent adjustments to the wrench's angle and position during use, resulting in insufficient operational flexibility and low efficiency. These issues, to some extent, limit the efficiency and convenience of hot-nozzle removal and assembly work. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a ball wrench.

[0005] This utility model discloses a ball wrench, which adopts the following technical solution:

[0006] A ball bearing wrench includes an outer sleeve, an inner sleeve, and rollers; one end of the outer sleeve is a wrench end, and the other end is a hollow locking end with an opening; the inner sleeve is a through-hole hollow sleeve and is rotatably fitted into the locking end of the inner sleeve; the inner sleeve has roller grooves spaced circumferentially, and the inner wall of the outer sleeve has arc-shaped grooves spaced circumferentially and corresponding to the roller grooves one by one; the side of the roller groove opposite to the arc-shaped groove has a roller opening, and the width of the roller opening is smaller than the diameter of the roller; the roller is housed between the roller groove and the arc-shaped groove, and when the inner sleeve and the outer sleeve rotate relative to each other, the arc-shaped groove pushes the roller out toward the roller opening.

[0007] Preferably, the inner wall of the roller groove includes an arc surface and a vertical surface, and the two sides of the roller opening transition from the arc surface to the vertical surface.

[0008] Preferably, the inner sleeve is provided with extension grooves that correspond one-to-one with the roller grooves, and a portion of the roller is exposed in the extension grooves.

[0009] Preferably, the wrench end is used for assembly with an external tool.

[0010] Preferably, it further includes a wrench component, which is assembled to the end of the wrench.

[0011] Preferably, the wrench includes a wrench handle and a plug block, and the wrench end is provided with a plug slot for the plug block to be matched and plugged in.

[0012] Preferably, the plug block is provided with snap-fit ​​protrusions, and the inner wall of the plug groove is provided with snap-fit ​​grooves for snapping the snap-fit ​​protrusions.

[0013] Preferably, the inner sleeve includes an inner sleeve body and a retaining ring. The inner sleeve body is sleeved inside the locking end of the outer sleeve. The roller groove is formed on the sleeve body. The retaining ring limits the inner sleeve body to the end of the outer sleeve.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects:

[0015] This invention, through the cooperation of an outer sleeve, an inner sleeve, and rollers, transforms the rotation of the outer sleeve into an ejection action of the rollers within the inner sleeve. This enables effective tightening or loosening of the hot nozzle workpiece without relying on traditional hexagonal shape processing. The operation is flexible and reliable, eliminating the need to process hexagonal shapes on the hot nozzle workpiece, thus significantly reducing processing steps and mold opening costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the ball wrench in this embodiment;

[0017] Figure 2 This is a schematic diagram of the overall structure of the ball wrench from another angle in this embodiment;

[0018] Figure 3 This is a structural breakdown diagram of the ball wrench in this embodiment;

[0019] Figure 4 This is a structural disassembly diagram of the ball wrench from another angle in this embodiment;

[0020] Figure 5 This is a cross-sectional view of the ball wrench in this embodiment;

[0021] Figure 6 This is a schematic diagram of the inner sleeve structure of the ball wrench in this embodiment;

[0022] Figure 7 This is a longitudinal sectional view of the ball wrench in this embodiment.

[0023] Explanation of icon numbers:

[0024] 1. Outer sleeve; 11. Insert groove; 111. Snap-fit ​​groove; 12. Arc-shaped groove; 2. Inner sleeve; 21. Roller groove; 211. Arc surface; 212. Vertical surface; 22. Extension groove; 3. Retaining ring; 4. Roller; 5. Wrench part; 51. Wrench handle; 52. Insert block; 521. Snap-fit ​​protrusion. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This embodiment discloses a ball wrench, referring to... Figure 1-7 The system includes an outer sleeve 1, an inner sleeve 2, and rollers 4. One end of the outer sleeve 1 is a wrench end, and the other end is a hollow locking end with an opening. The inner sleeve 2 is a through-hole hollow sleeve that is rotatably fitted into the locking end of the outer sleeve 1. The inner sleeve 2 has roller grooves 21 spaced circumferentially, and the inner wall of the outer sleeve 1 has arc-shaped grooves 12 spaced circumferentially and corresponding to the roller grooves 21. The side of the roller groove 21 facing away from the arc-shaped groove 12 has a roller opening, the width of which is smaller than the diameter of the roller 4. The roller 4 is housed between the roller grooves 21 and the arc-shaped grooves 12. When the inner sleeve 2 and the outer sleeve 1 rotate relative to each other, the arc-shaped grooves 12 push the roller 4 out toward the roller opening. The roller 4 is aligned with the axis of the inner sleeve 2 and the outer sleeve 1. By adopting the above structural design, the locking end of the outer sleeve 1 is fitted onto the hot nozzle that needs to be disassembled. At this time, the inner wall of the inner sleeve 2 or part of the rollers 4 contact the hot nozzle to form static friction. When the outer sleeve 1 is rotated, the inner sleeve 2 and the outer sleeve 1 rotate relative to each other, so that the rollers 4 follow the movement of the inner sleeve 2 and begin to leave the deepest position of the arc groove 12. At this time, the rollers 4 are pushed towards the roller opening direction along the inclined slope of the arc groove 12 until all the rollers 4 around the inner sleeve 2 press against the hot nozzle, thereby realizing the locking action of the hot nozzle. Continue to rotate to complete the disassembly and assembly action. This solution enables the ball wrench to convert the rotation of the outer sleeve 1 into the locking or loosening action of the hot nozzle in the inner sleeve 2 by the movement of the rollers 4 between the roller groove 21 and the arc groove 12 without relying on traditional hexagonal shape processing. This effectively solves the problems of increased processing time and mold opening costs caused by processing hexagonal shapes in the prior art, simplifies the structure of the hot nozzle disassembly and assembly tool, and improves the disassembly and assembly efficiency.

[0027] In this embodiment, eight rollers 4 are provided, and eight roller grooves 21 and eight arc-shaped grooves 12 are provided evenly along the circumference. This design makes the distribution of rollers between the inner sleeve 2 and the outer sleeve 1 more uniform, so that when the outer sleeve 1 is rotated, the force can be transmitted to the hot nozzle more smoothly, achieving a more stable and reliable locking force for the hot nozzle.

[0028] As a preferred embodiment, the inner wall of the roller groove 21 includes an arc surface 211 and a vertical surface 212, with the two side edges of the roller opening transitioning from the arc surface 211 to the vertical surface 212. This design allows the roller 4 to move more smoothly within the roller groove 21, reducing friction and wear during movement, improving the service life and reliability of the ball wrench, and also contributing to improved accuracy and stability of the tightening or loosening action.

[0029] As a preferred embodiment, the inner sleeve 2 is provided with an extension groove 22 corresponding to the roller groove 21. A portion of the roller 4 protrudes from the extension groove 22. In this embodiment, the extension groove 22 extends perpendicularly to the roller groove 21 and is located at both the upper and lower ends of the roller groove 21. The extension groove 22 not only provides space for the rollers to be placed and removed, facilitating the maintenance and replacement of the rollers 4, thereby improving the maintainability and service life of the ball wrench, but also plays a role in maintaining air pressure balance. During the relative movement of the inner sleeve 2 and the outer sleeve 1, the extension groove 22 can effectively balance the internal and external air pressure, avoiding problems such as increased movement resistance or unsmooth operation caused by air pressure differences, ensuring the stability and reliability of the ball wrench during use, and further optimizing the operating experience.

[0030] As a preferred embodiment, the wrench end is used for assembly with external tools. By designing the wrench end to be assembled with external tools, the ball wrench can be easily used with other tools, expanding its application range, improving its versatility and flexibility, and better meeting the usage needs of different users in different scenarios. Specifically, the ball wrench also includes a wrench component 5, which is assembled to the wrench end. The wrench component 5 provides users with a more convenient operating method, allowing users to operate the ball wrench more effortlessly and efficiently, improving work efficiency and enhancing the user experience. Of course, in other embodiments, the wrench end may be integrally formed on the end of the outer sleeve 1.

[0031] As a preferred embodiment, the wrench component 5 includes a wrench handle 51 and a connector block 52, with a connector groove 11 at the wrench end for the connector block to be inserted into. This plug-in assembly method makes the connection between the wrench component 5 and the outer sleeve 1 more stable and reliable, and also facilitates the installation and disassembly of the wrench component 5, further improving the maintainability and ease of use of the ball wrench.

[0032] As a preferred embodiment, the plug block 52 is provided with a snap-fit ​​protrusion 521, and the inner wall of the plug groove 11 is provided with a snap-fit ​​groove 111 for the snap-fit ​​protrusion 521 to engage. By adopting the above design, the connection stability between the wrench part 5 and the outer sleeve 1 is further enhanced, preventing the wrench part 5 from loosening or falling off during use, ensuring the stability and reliability of the ball wrench during operation, and also facilitating quick assembly and disassembly, thus improving assembly efficiency.

[0033] As a preferred embodiment, the inner sleeve 2 includes an inner sleeve body and a retaining ring 3. The inner sleeve body is fitted inside the locking end of the outer sleeve 1, and a roller groove 21 is formed on the inner sleeve body. The retaining ring 3 limits the inner sleeve 2 body to the end of the outer sleeve 1. This structural design allows the inner sleeve 2 body to be more stably assembled inside the outer sleeve 1, and also facilitates the installation and fixation of the inner sleeve 2, improving the overall structural stability and reliability of the ball wrench.

[0034] The technical solution provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A ball bearing wrench, characterized in that, The device includes an outer sleeve, an inner sleeve, and rollers. One end of the outer sleeve is a wrench end, and the other end is a hollow locking end with an opening. The inner sleeve is a through-hole hollow sleeve that is rotatably fitted into the locking end of the inner sleeve. The inner sleeve has roller grooves spaced apart circumferentially. The inner wall of the outer sleeve has arc-shaped grooves spaced apart circumferentially and corresponding to the roller grooves. The roller groove has a roller opening on the side opposite to the arc-shaped groove, and the width of the roller opening is smaller than the diameter of the roller. The roller is housed between the roller groove and the arc-shaped groove. When the inner sleeve and the outer sleeve rotate relative to each other, the arc-shaped groove pushes the roller out toward the roller opening.

2. The ball wrench according to claim 1, characterized in that, The inner wall of the roller groove includes an arc surface and a vertical surface, and the two sides of the roller opening transition from the arc surface to the vertical surface.

3. The ball wrench according to claim 1, characterized in that, The inner sleeve is provided with extension grooves that correspond one-to-one with the roller grooves, and a portion of the roller is exposed in the extension grooves.

4. The ball wrench according to claim 1, characterized in that, The wrench end is used for assembly with external tools.

5. The ball wrench according to claim 4, characterized in that, It also includes a wrench assembly, which is fitted onto the end of the wrench.

6. The ball wrench according to claim 5, characterized in that, The wrench assembly includes a wrench handle and a connector block, wherein the wrench end is provided with a connector slot for the connector block to be inserted into.

7. The ball wrench according to claim 6, characterized in that, The plug block is provided with snap-fit ​​protrusions, and the inner wall of the plug groove is provided with snap-fit ​​grooves for snap-fitting the snap-fit ​​protrusions.

8. The ball wrench according to claim 1, characterized in that, The inner sleeve includes an inner sleeve body and a fixing ring. The inner sleeve body is sleeved inside the locking end of the outer sleeve. The roller groove is formed on the sleeve body. The fixing ring limits the inner sleeve body to the end of the outer sleeve.

Images