Locking bit
By designing a combination of locking adjustment device and eccentric locking device in the fastener tool, the problem of easy falling off in the traditional fastener tool is solved, achieving a more stable connection and safer operation.
Patent Information
- Application Number
- CN202421813857.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The connection between the bit head and the handle in traditional fastener tools is not stable enough, and the bit head is prone to fall off or loose, resulting in safety hazards.
A locking bit head is designed, using a combination of locking adjustment device and eccentric locking device. Through the precise locking mechanism and a stable connection design, the bit head will not fall off accidentally during use.
The stable connection between the bit head and the handle is achieved, which avoids safety accidents that may be caused by the bit head falling off, improves the safety and operation stability of the workplace, and simplifies the replacement process of the bit head.
Smart Images
Figure CN223013030U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bit, in particular to a locking bit. Background Technique
[0002] The technology of the locking bit can be traced back to the development history of fastener tools. With the continuous progress of industrial production, the requirements for fastener tools are getting higher and higher. It is not only necessary to be able to complete the fastening operation quickly and accurately, but also to have high reliability and durability. Therefore, as one of the key components of fastener tools, the technology of the locking bit is also constantly developing and improving.
[0003] In the use process of traditional fastener tools, due to the unstable connection between the bit and the handle, the bit is prone to fall off or loosen, which brings potential safety hazards to users. For this reason, we propose a locking bit. Content of the Utility Model
[0004] (1) Technical Problems to be Solved
[0005] Aiming at the deficiencies of the prior art, the utility model provides a locking bit, which solves the above problems.
[0006] (2) Technical Solutions
[0007] To achieve the above object, the utility model provides the following technical solution: A locking bit, including a handle, one side inner wall of the handle is fixedly connected with a locking adjustment device, one side outer wall of the locking adjustment device is fixedly connected with an eccentric locking device, the output end of the eccentric locking device far away from the handle is clamped with a bit assembly. The locking adjustment device includes a fixed bearing, a second fixed bearing, an adjustment rod, an adjustment block and an adjustment column. One side inner wall of the handle is fixedly connected with the fixed bearing, one side inner wall of the handle close to the fixed bearing is fixedly connected with the second fixed bearing. The inner walls of the fixed bearing and the second fixed bearing are fixedly connected with the adjustment rod. The output end of the adjustment rod close to the second fixed bearing is fixedly connected with the adjustment block. One end outer wall of the adjustment block is fixedly connected with the adjustment column. The eccentric locking device includes a locking ring, a limit slide rail, a locking head, an eccentric turntable, an eccentric chute and a movable bolt. The locking ring is fixedly connected to the outer wall of the handle far away from the adjustment block. The limit slide rail is fixedly connected to one end outer wall of the locking ring. The locking head is inserted into the outer wall of the locking ring close to the limit slide rail and penetrates through the inner wall of the locking ring. The eccentric turntable is in frictional contact with one end inner wall of the locking ring. The eccentric chute is opened on one side outer wall of the eccentric turntable. The movable bolt is slidably connected to the inner wall of the eccentric chute and sleeved on one side outer wall of the locking head.
[0008] Preferably, the bit assembly includes a bit mounting member, a limiting groove, and a locking hole. One output end of the eccentric locking device is clamped with the bit mounting member. A limiting groove is formed on the inner wall of one side of the bit mounting member, and a locking hole is formed on the inner wall of the bit mounting member close to the limiting groove.
[0009] Preferably, the output end of the adjusting rod away from the adjusting block is fixedly connected to the outer wall of one side of the eccentric turntable.
[0010] Preferably, the limiting groove is in sliding fit with the limiting slide rail.
[0011] Preferably, the output end of the locking head away from the movable bolt is in plug-in fit with the locking hole.
[0012] (III) Beneficial effects
[0013] Compared with the prior art, the present utility model provides a locking bit, which has the following beneficial effects:
[0014] 1. For this locking bit, through an accurate locking mechanism, it is ensured that the bit will not accidentally fall off during use, thus avoiding potential safety accidents caused by the bit falling off, such as tool damage, equipment shutdown or personal injury, and improving the safety of the workplace.
[0015] 2. For this locking bit, the design of the locking device makes the connection between the bit and the handle more stable, reduces the bit shaking caused by vibration or external force, and improves the stability and precision of the work, which is particularly important for occasions that require precise control of torque or angle.
[0016] 3. For this locking bit, the design of this device makes the replacement of the bit simple and fast. The user can unlock and replace the bit by simply rotating the adjusting rod, without the need to use additional tools or complex operation steps, which not only saves time but also reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic structural diagram of the present utility model;
[0018] Figure 2 is a schematic cross-sectional view of the present utility model;
[0019] Figure 3 is a schematic diagram of the bit assembly of the present utility model;
[0020] Figure 4 is a schematic diagram of the eccentric locking device of the present utility model.
[0021] In the figure: 1. Handle; 2. Locking adjustment device; 3. Eccentric locking device; 4. Bit assembly; 5. Fixed bearing; 6. Second fixed bearing; 7. Adjusting rod; 8. Adjusting block; 9. Adjusting column; 10. Bit mounting piece; 11. Limit groove; 12. Locking hole; 13. Locking ring; 14. Limit slide rail; 15. Locking head; 16. Eccentric turntable; 17. Eccentric chute; 18. Movable bolt. Detailed implementation mode
[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0023] Please refer to Figures 1-4 , a locking bit, including a handle 1, one side of the inner wall of the handle 1 is fixedly connected with a locking adjustment device 2, one side outer wall of the locking adjustment device 2 is fixedly connected with an eccentric locking device 3, the output end of the eccentric locking device 3 away from the handle 1 is clamped with a bit assembly 4, the locking adjustment device 2 includes a fixed bearing 5, a second fixed bearing 6, an adjusting rod 7, an adjusting block 8, an adjusting column 9, one side of the inner wall of the handle 1 is fixedly connected with a fixed bearing 5, one side of the inner wall of the handle 1 close to the fixed bearing 5 is fixedly connected with a second fixed bearing 6, the inner walls of the fixed bearing 5 and the second fixed bearing 6 are fixedly connected with an adjusting rod 7, the output end of the adjusting rod 7 close to the second fixed bearing 6 is fixedly connected with an adjusting block 8, one end outer wall of the adjusting block 8 is fixedly connected with an adjusting column 9, the eccentric locking device 3 includes a locking ring 13, a limit slide rail 14, a locking head 15, an eccentric turntable 16, an eccentric chute 17, a movable bolt 18, the locking ring 13 is fixedly connected to the outer wall of the handle 1 away from the adjusting block 8, the limit slide rail 14 is fixedly connected to one end outer wall of the locking ring 13, the locking head 15 is inserted into one end outer wall of the locking ring 13 close to the limit slide rail 14 and penetrates through the inner wall of the locking ring 13, the eccentric turntable 16 is in frictional contact with one end inner wall of the locking ring 13, the eccentric chute 17 is opened on one side outer wall of the eccentric turntable 16, and the movable bolt. 18 is slidably connected to the inner wall of the eccentric chute 17 and sleeved on one side outer wall of the locking head 15.
[0024] Furthermore, the bit assembly 4 includes a bit mounting piece 10, a limit groove 11, a locking hole 12, the output end of one end of the eccentric locking device 3 is clamped with a bit mounting piece 10, a limit groove 11 is opened on one side inner wall of the bit mounting piece 10, and a locking hole 12 is opened on the inner wall of the bit mounting piece 10 close to the limit groove 11.
[0025] Furthermore, the output end of the adjusting rod 7 away from the adjusting block 8 is fixedly connected to one side outer wall of the eccentric turntable 16.
[0026] Further, the limiting groove 11 and the limiting slide rail 14 are in sliding fit.
[0027] Further, the output end of the locking head 15 on the side away from the movable bolt 18 is in plug-in fit with the locking hole 12.
[0028] Working principle: First, the adjusting rod 7 in the locking and adjusting device is fixed inside the handle 1 through the fixed bearing 5 and the second fixed bearing 6. The adjusting block 8 and the adjusting column 9 are fixed at one end of the adjusting rod 7. The eccentric turntable 16 of the eccentric locking device 3 cooperates with the eccentric chute 17 and the movable bolt 18 in the locking ring 13, and the locking head 15 is inserted into the locking ring 13 but not yet engaged with the locking hole 12 of the bit assembly 4. The bit mounting member 10 is fixed to the output end of the eccentric turntable 16 through the clamping of the eccentric locking device 3. The limiting groove 11 on it is aligned with the limiting slide rail 14 but not fully locked. When installing or adjusting the bit, the user rotates the adjusting column 9 outside the handle 1 to rotate the adjusting rod 7. The rotation of the adjusting rod 7 drives the eccentric turntable 16 to rotate inside the locking ring 13. The rotation of the eccentric turntable 16 causes the movable bolt 18 in the eccentric chute 17 to move along its trajectory, thereby pushing the locking head 15 to move inside the locking ring 13. As the eccentric turntable 16 continues to rotate, the movable bolt 18 pushes the locking head 15 to gradually approach the bit mounting member 10, and finally the tip of the locking head 15 is inserted into the locking hole 12 of the bit mounting member 10. Once the locking head 15 is fully inserted into the locking hole 12, the bit assembly 4 is firmly locked to the output end of the eccentric turntable 16, achieving a tight connection. In this state, the user can apply force to the bit assembly 4 through the handle 1 to perform various tightening or loosening operations. Due to the action of the locking mechanism, the bit assembly 4 will not loosen or fall off during the operation. When the bit needs to be replaced, the user rotates the adjusting rod 7 in the reverse direction, causing the eccentric turntable 16 to rotate in the reverse direction, thereby driving the movable bolt 18 and the locking head 15 to retract, releasing the locking of the bit mounting member 10. Subsequently, the bit assembly 4 can be easily removed or replaced, and the above process can be repeated for new installation and locking.
[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A locking screwdriver bit, comprising a handle (1), characterized in that: A locking adjustment device (2) is fixedly connected to one side of the inner wall of the handle (1), an eccentric locking device (3) is fixedly connected to one side of the outer wall of the locking adjustment device (2), a screwdriver bit assembly (4) is clamped on the output end of the eccentric locking device (3) away from the handle (1), the locking adjustment device (2) comprises a fixed bearing (5), a second fixed bearing (6), an adjustment rod (7), an adjustment block (8), and an adjustment column (9), one side of the inner wall of the handle (1) is fixedly connected to the fixed bearing (5), the inner wall of the handle (1) is fixedly connected to the second fixed bearing (6), the fixed bearing (5) and the inner wall of the second fixed bearing (6) are fixedly connected to an adjustment rod (7), the output end of the adjustment rod (7) is fixedly connected to the second fixed bearing (6), and the adjustment block (8) is fixedly connected to the output end of the adjustment rod (7) ) is fixedly connected to an adjusting column (9) on one end outer wall, the eccentric locking device (3) comprises a locking ring (13), a limiting slide rail (14), a locking head (15), an eccentric rotating disk (16), an eccentric sliding groove (17), and a movable bolt (18), the locking ring (13) is fixedly connected to the outer wall of the handle (1) on the side away from the adjusting block (8), the limiting slide rail (14) is fixedly connected to the outer wall of one end of the locking ring (13), the locking head (15) is inserted into the outer wall of one end of the locking ring (13) close to the limiting slide rail (14) and penetrates the inner wall of the locking ring (13), the eccentric rotating disk (16) is in frictional contact with the inner wall of one end of the locking ring (13), the eccentric sliding groove (17) is opened on the outer wall of one side of the eccentric rotating disk (16), and the movable bolt (18) is slidably connected to the inner wall of the eccentric sliding groove (17) and sleeved on the outer wall of one side of the locking head (15).
2. A locking screwdriver bit according to claim 1, characterized in that: The bit assembly (4) comprises a bit mounting part (10), a limiting groove (11), and a locking hole (12); the bit mounting part (10) is clamped at one output end of the eccentric locking device (3); the limiting groove (11) is provided on one inner wall of the bit mounting part (10); and the locking hole (12) is provided on the inner wall of the bit mounting part (10) near the limiting groove (11).
3. A locking screwdriver bit according to claim 2, characterized in that: The output end of the adjusting rod (7) away from the adjusting block (8) is fixedly connected to the outer wall of one side of the eccentric rotating disk (16).
4. A locking screwdriver bit according to claim 3, characterized in that: The limiting groove (11) and the limiting slide rail (14) are in sliding cooperation.
5. A locking screwdriver bit according to claim 4, characterized in that: The output end of the locking head (15) away from the movable bolt (18) is plug-fitted into the locking hole (12).