Preset torsion screwdriver
By designing a detachable hollow cylinder outer cylinder and threaded cylinder structure, combined with the coordination of the adjustment block and the spring, the thread wear of the traditional torque driver shell is solved, the reliability and economicality of the torque driver is achieved, and the normal torque driver is ensured. Use and screw tightening effect.
Patent Information
- Application Number
- CN202323447913.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-18
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-18
AI Technical Summary
The shell thread and shell of the traditional torque driver are integrated into a structure, which is easily worn or damaged, resulting in a decrease in the connection strength and the inability to adjust the compression state of the spring, affecting the screw tightening effect.
A preset torque driver is designed, adopting a detachable hollow cylinder outer cylinder and threaded cylinder structure. Torque adjustment is achieved through the coordination of the adjustment block and the spring, and a clutch and adjustment sleeve are provided on the torque shaft to adjust the preset torque. , the outer cylinder and the threaded cylinder are both replaceable plastic materials, with card blocks and slots, adjusting threads and convex teeth structures to ensure that the threads are replaceable and the springs are adjustable.
Effectively prevent the failure of torque driver caused by the damage to the outer cylinder thread, allow the thread replacement of the upper adjustment block, ensure the sustainable use of the torque driver, and realize torque adjustment through the connection between the magnetic head and the groove, improving the reliability of the torque driver and Economical.
Smart Images
Figure CN222155395U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of torque screwdrivers, in particular to a preset torque screwdriver. Background Art
[0002] In screw tightening, a screwdriver (also known as a screwdriver) is needed to tighten the screws. If a non-torque screwdriver is used for tightening, the connecting parts may be damaged or not locked tightly due to the inability to control the output torque. In the worst case, the connection strength between the connecting parts may be affected, and in the worst case, tiny screws may break, making the equipment unusable.
[0003] In a traditional torque screwdriver, torque is adjusted by a spring and upper and lower adjustment blocks, and the upper adjustment block is connected to the outer shell of the torque screwdriver by a thread. In the prior art, the thread and the outer shell of the torque screwdriver are an integrated structure. Once the thread is worn or damaged, the connection strength between the upper adjustment block and the outer shell will be low, and the spring cannot be squeezed. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In order to solve the above problems, the utility model proposes a preset torque screwdriver which has a simple structure, replaceable outer barrel thread, is simple, reliable and has high economic benefits.
[0006] (II) Technical solution
[0007] The utility model discloses a preset torque screwdriver, comprising an outer cylinder, a torque shaft arranged in the outer cylinder, a spring sleeved on the torque shaft, and an upper adjusting block and a lower adjusting block arranged at both ends of the outer cylinder, wherein a detachable threaded cylinder is further provided at the end of the outer cylinder, wherein a clamping block is provided on the outer side wall of the threaded cylinder, and a clamping groove matched with the clamping block is provided on the side wall of the outer cylinder, an adjusting thread is provided on the inner side wall of the threaded cylinder, and convex teeth matched with the adjusting thread are provided on the side walls of the upper adjusting block and the lower adjusting block, the spring is arranged between the upper adjusting block and the lower adjusting block, and the compression state and compression height of the spring can be adjusted by adjusting the distance between the upper adjusting block and the lower adjusting block.
[0008] In the present invention, the outer cylinder and the threaded cylinder are both hollow cylindrical structures, and the outer diameter of the threaded cylinder is equal to the inner diameter of the outer cylinder.
[0009] In the utility model, a clutch is further provided on the torque shaft, and an adjusting sleeve is further provided below the clutch, and the preset torque of the torque screwdriver can be adjusted by rotating the adjusting sleeve.
[0010] In the utility model, a connecting end is also provided at the end of the torsion shaft, and the connecting end is connected to a magnetic head through a thread. One end of the magnetic head is provided with a groove matching the connecting end, and the connecting end and the groove are connected through a thread. The bottom end of the magnetic head is also provided with a slot with a regular hexagonal structure.
[0011] In the present utility model, the material of the magnetic head is a magnet.
[0012] In the utility model, two recesses are provided on the top surface of the upper adjusting block for facilitating tool-assisted rotation.
[0013] In the utility model, the top surface of the clamping block is a downwardly inclined surface, and the bottom surface of the clamping block is a horizontal surface.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] (1) The outer barrel of the torque screwdriver in the utility model replaces the outer barrel of the traditional one-piece threaded structure with a detachable threaded barrel. The thread can be replaced, which effectively prevents the problem that the torque screwdriver cannot be used normally after the thread of the outer barrel is damaged. It is very reliable, and even if the thread of the upper adjustment block is damaged, the upper adjustment block can be directly replaced, and the torque screwdriver can be used normally without the need for complete disassembly. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the torque screwdriver in Example 1;
[0019] Figure 2 Schematic diagram of the cross-sectional structure of the torque screwdriver in Example 1;
[0020] Figure 3 It is a schematic diagram of the enlarged local structure of the torque screwdriver in Example 1.
[0021] 10. Outer cylinder, 11. Threaded cylinder, 12. Block, 13. Slot, 14. Cavity, 15. Bottom wall, 16. Spring, 17. Upper adjusting block, 18. Lower adjusting block, 19. Clutch, 20. Torque shaft, 21. Magnetic head, 22. Connecting end, 23. Groove, 24. Adjusting sleeve, 25. Slot, 26. Horizontal plane, 27. Inclined plane, 28. Depression. DETAILED DESCRIPTION
[0022] Compared to the embodiments shown in the drawings, feasible implementations within the scope of the present disclosure may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.
[0023] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include", "comprise" or "have" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to the physical or mechanical connections or connections shown in the drawings, but may include equivalent connections or connections, whether direct or indirect. "Up", "down", "left", "right", "horizontal", "vertical" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0024] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] Example 1
[0026] like Figure 1-3A preset torque screwdriver is shown, comprising an outer cylinder 10, a torque shaft 20 arranged in the outer cylinder 10, a spring 16 sleeved on the torque shaft 20, and an upper adjustment block 17 and a lower adjustment block 18 arranged at both ends of the outer cylinder 10, wherein the end of the outer cylinder 10 is also provided with a detachable threaded cylinder 11, wherein a clamping block 12 is provided on the outer side wall of the threaded cylinder 11, and a clamping groove 13 cooperating with the clamping block 12 is provided on the side wall of the outer cylinder 10, an adjusting thread is provided on the inner side wall of the threaded cylinder 11, and convex teeth cooperating with the adjusting thread are provided on the side walls of the upper adjustment block 17 and the lower adjustment block 18, and the spring 16 is arranged between the upper adjustment block 17 and the lower adjustment block 18, and the compression state and compression height of the spring 16 can be adjusted by adjusting the distance between the upper adjustment block 17 and the lower adjustment block 18.
[0027] The outer cylinder 10 and the threaded cylinder 11 are both hollow cylindrical structures, and the outer diameter of the threaded cylinder 11 is equal to the inner diameter of the outer cylinder 10. A clutch 19 is also provided on the torque shaft 20, and an adjustment sleeve 24 is also provided below the clutch 19. The preset torque of the torque screwdriver can be adjusted by rotating the adjustment sleeve 24.
[0028] It should be noted that the outer cylinder 10 and the threaded cylinder 11 are made of the same material, which is plastic and has a certain elasticity. Figure 1 As shown, blocks 12 are provided at both ends of the threaded barrel 11, and a cavity 14 for accommodating the threaded barrel 11 is provided at the top of the outer barrel 10. A bottom wall 15 is provided at the bottom of the cavity 14, and the distance from the opening of the cavity 14 to the bottom wall 15 is equal to the height of the threaded barrel 11.
[0029] Furthermore, a connecting end 22 is provided at the end of the torsion shaft 20, and the connecting end 22 is connected to a magnetic head 21 through a thread. One end of the magnetic head 21 is provided with a groove 23 that cooperates with the connecting end 22, and the connecting end 22 and the groove 23 are connected through a thread. The bottom end of the magnetic head 21 is also provided with a slot 25 with a regular hexagonal structure.
[0030] The spring 16 is sandwiched between the upper adjusting block 17 and the lower adjusting block 18 , and the extension and contraction state of the spring 16 can be adjusted by adjusting the height of the upper adjusting block 17 .
[0031] The material of the magnetic head 21 is a magnet. Two recesses 28 are provided on the top surface of the upper adjustment block 17 for facilitating tool-assisted rotation, that is, tools matching the recesses are used to assist in screwing the upper adjustment block into the threaded barrel 11. The top surface of the clamping block 12 is a downwardly inclined surface 27, and the bottom surface of the clamping block 12 is a horizontal surface 26.
[0032] The torque screwdriver outer barrel 10 replaces the traditional one-piece threaded structure outer barrel 10 with a detachable threaded barrel 11. The thread is replaceable, which effectively prevents the problem that the torque screwdriver cannot be used normally after the thread of the outer barrel 10 is damaged. It is very reliable, and even if the thread of the upper adjusting block 17 is damaged, the upper adjusting block 17 can be directly replaced, and the torque screwdriver can be used normally without the need for complete disassembly.
[0033] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.
Claims
1. A preset torque screwdriver, It is characterized in that The invention comprises an outer cylinder, a torsion shaft arranged in the outer cylinder, a spring sleeved on the torsion shaft, and an upper adjusting block and a lower adjusting block arranged at both ends of the outer cylinder. A detachable threaded cylinder is also arranged at the end of the outer cylinder, wherein a clamping block is arranged on the outer side wall of the threaded cylinder, and a clamping groove matched with the clamping block is arranged on the side wall of the outer cylinder, an adjusting thread is arranged on the inner side wall of the threaded cylinder, and convex teeth matched with the adjusting thread are arranged on the side walls of the upper adjusting block and the lower adjusting block, the spring is arranged between the upper adjusting block and the lower adjusting block, and the compression state and compression height of the spring can be adjusted by adjusting the distance between the upper adjusting block and the lower adjusting block.
2. The preset torque screwdriver according to claim 1, characterized in that: The outer cylinder and the threaded cylinder are both hollow cylindrical structures, and the outer diameter of the threaded cylinder is equal to the inner diameter of the outer cylinder.
3. The preset torque screwdriver according to claim 2, characterized in that: The torque shaft is also provided with a clutch, and an adjusting sleeve is also provided below the clutch, and the preset torque of the torque screwdriver can be adjusted by rotating the adjusting sleeve.
4. The preset torque screwdriver according to claim 3, characterized in that: A connecting end is also provided at the end of the torque shaft, and the connecting end is connected to a magnetic head through a thread. One end of the magnetic head is provided with a groove that matches the connecting end, and the connecting end and the groove are connected through a thread. The bottom end of the magnetic head is also provided with a slot with a regular hexagonal structure.
5. The preset torque screwdriver according to claim 4, characterized in that: The material of the magnetic head is a magnet.
6. The preset torque screwdriver according to claim 5, characterized in that: Two recesses are also provided on the top surface of the upper adjusting block to facilitate tool-assisted rotation.
7. The preset torque screwdriver according to claim 6, characterized in that: The top surface of the block is a downwardly inclined surface, and the bottom surface of the block is a horizontal surface.