Torque screwdriver
By designing a torque screwdriver with screws, bearings, main pipe scales and secondary scale rings, the problem of screw damage caused by existing screwdrivers being unable to set torque is solved, and effective protection of screws is achieved.
Patent Information
- Application Number
- CN202421805503.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-26
AI Technical Summary
Existing screwdrivers cannot set torque when rotating, resulting in excessive force on the screw, which may damage the thread and affect the use of the device.
A torque screwdriver is designed, including a screwdriver handle, screw, bearing, main pipe scale and secondary scale ring. Through the cooperation of these components, a specific torque value can be set to prevent screw damage.
When the screwdriver reaches the set torque, it will slip when it continues to rotate, which will protect the screw and prevent the screw from being damaged.
Smart Images
Figure CN222986830U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screwdrivers, in particular to a torque screwdriver. Background Technique
[0002] A screwdriver can be fitted into a screw to facilitate driving the screw to rotate. However, a general screwdriver cannot set the torque during rotation. Therefore, when rotating, when the screw is under greater force, the thread of the screw will be damaged, which is not conducive to the use of the device. Content of the Utility Model
[0003] The purpose of the utility model is to provide a torque screwdriver to solve the problems raised in the above background technique.
[0004] The torque screwdriver includes a screwdriver handle and a secondary scale ring: a screw rod is arranged inside the screwdriver handle, a bearing is arranged on the side of the screw rod, a main scale is connected to the outside of the bearing, a secondary scale ring is connected to the outside of the main scale, and a nut is arranged on the outside of the secondary scale ring.
[0005] Preferably, a second spring is arranged on the side of the end of the screw rod located outside the screwdriver handle, an adjusting ring is arranged on the side of the second spring, and the main scale is embedded and installed inside the adjusting ring.
[0006] Preferably, a square insert is arranged at the inner end of the screwdriver handle, an M5 headless screw is arranged on the side of the square insert, a gasket is arranged on the side of the M5 headless screw, and a first spring is arranged on the side of the gasket.
[0007] Preferably, a third steel ball is arranged on the side of the first spring, a second steel ball is arranged on the side of the third steel ball, the second steel ball and the third steel ball are embedded and installed inside the screw rod, and a concave wheel is arranged on the outside of the screw rod.
[0008] Preferably, a first steel ball is arranged on the outside of the main scale, and a second spring is arranged on the outside of the first steel ball.
[0009] The beneficial effects of the utility model are:
[0010] 1. When the device is in use, when the screwdriver reaches a fixed torque, the device will slip when it continues to rotate, thus playing a role in protecting the screw and preventing the screw from being damaged. Description of the Drawings
[0011] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification. They are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:
[0012] Figure 1 Schematic diagram of the overall three-dimensional structure of the present utility model;
[0013] Figure 2 Schematic diagram of the overall front sectional structure of the present utility model;
[0014] Figure 3 Schematic diagram of the installation structure of the screwdriver handle and the main scale of the present utility model;
[0015] Figure 4 Schematic diagram of the installation structure of the first spring and the screwdriver handle of the present utility model.
[0016] In the figure: 1. Screwdriver handle; 2. Square insert; 3. Cam; 4. Gasket; 5. Screw rod; 6. Main scale; 7. Nut; 8. Sub-scale ring; 9. Adjusting ring; 10. First spring; 11. First steel ball; 12. Second spring; 13. Second steel ball; 14. M5 button head screw; 15. Bearing; 16. Third steel ball. Specific embodiments
[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0018] During specific implementation: As Figures 1-3 shown, a torque screwdriver includes a screwdriver handle and a sub-scale ring: A screw rod is arranged inside the screwdriver handle, a bearing is arranged on the side of the screw rod, the main scale is connected to the outside of the bearing, the sub-scale ring is connected to the outside of the main scale, and a nut is arranged on the outside of the sub-scale ring.
[0019] A second spring is arranged on the side of the end of the screw rod located outside the screwdriver handle, an adjusting ring is arranged on the side of the second spring, and the main scale is embedded and installed inside the adjusting ring.
[0020] A square insert is arranged at the inner end of the screwdriver handle, an M5 button head screw is arranged on the side of the square insert, a gasket is arranged on the side of the M5 button head screw, and a first spring is arranged on the side of the gasket.
[0021] A third steel ball is arranged on the side of the first spring, a second steel ball is arranged on the side of the third steel ball, the second steel ball and the third steel ball are embedded and installed inside the screw rod, and a cam is arranged on the outside of the screw rod.
[0022] A first steel ball is arranged on the outside of the main scale, and a second spring is arranged on the outside of the first steel ball.
[0023] Working principle:
[0024] The torque screwdriver 1 can set a specific torque value to precisely tighten the screws with a moment, preventing damage to the screws.
[0025] Pull the torque adjustment ring 9 backward to perform an axial rotational motion. The torque increases counterclockwise and decreases clockwise.
[0026] The rotation of the adjustment ring 9 drives the main scale tube 6 to rotate. The fixed end of the screw rod 7 is designed with a plain bearing 15, making the rotation process easier.
[0027] During the rotation of the main scale tube 6, the internal spring 12 is compressed by extrusion. There is a laser - engraved torque scale on the main scale tube 6; there are sub - scales on the sub - scale ring 6 for fine - tuning the torque.
[0028] There is a specific gasket 4 at the front end of the first spring 10. One end of the gasket 4 contacts the spring 10, and the other end contacts the third steel ball 16.
[0029] The third steel ball hole is located in the hole of the square rod. There are 5 steel ball positions on the hole wall. There is a gear ring outside the steel ball positions. The outer circumference of the gear ring is a spline tooth, which is integrated with the screwdriver handle 1 through an extrusion process.
[0030] The front of the square rod is connected to a fastening bit or a socket - type tool. During the rotation of the plastic handle, the 5 steel balls are simultaneously compressed when contacting the convex surface. During the compression process, the large steel ball is extruded backward and displaced. During the displacement process, it is resisted by the spring, generating a moment. When the second steel ball moves from the convex surface to the concave surface again, the second spring is released. During this process, a set torque is released once.
[0031] After the screwdriver reaches the set torque value, a slipping action occurs, playing a role in protecting the screw.
[0032] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or elements inherent to such process, method, article or device.
[0033] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used 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 perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A torque screwdriver, characterized in that: The invention comprises a screwdriver handle (1) and a secondary scale ring (8): a screw rod (5) is arranged inside the screwdriver handle (1), a bearing (15) is arranged on the side of the screw rod (5), a main scale (6) is connected to the outside of the bearing (15), a secondary scale ring (8) is connected to the outside of the main scale (6), and a nut (7) is arranged on the outside of the secondary scale ring (8).
2. The torque screwdriver according to claim 1, characterized in that: A second spring (12) is arranged on the side of one end of the screw rod (5) located outside the screwdriver handle (1), an adjustment ring (9) is arranged on the side of the second spring (12), and the main pipe scale (6) is embedded in the inside of the adjustment ring (9).
3. The torque screwdriver according to claim 2, characterized in that: A square insert (2) is arranged at the inner end of the screwdriver handle (1), an M5 headless screw (14) is arranged on the side of the square insert (2), a gasket (4) is arranged on the side of the M5 headless screw (14), and a first spring (10) is arranged on the side of the gasket (4).
4. The torque screwdriver according to claim 3, characterized in that: A third steel ball (16) is arranged on the side of the first spring (10), a second steel ball (13) is arranged on the side of the third steel ball (16), the second steel ball (13) and the third steel ball (16) are embedded in the inside of the screw rod (5), and a cam wheel (3) is arranged on the outside of the screw rod (5).
5. The torque screwdriver according to claim 1, characterized in that: A first steel ball (11) is arranged on the outer side of the main pipe scale (6), and a second spring (12) is arranged on the outer side of the first steel ball (11).