Mechanical tripping type digital display torque wrench
By combining a torque detection strain sensor and a display screen in the torque wrench, the problem of the single information acquisition method of existing torque wrenches is solved, and torque information acquisition that combines mechanical reminders and digital display is realized.
Patent Information
- Application Number
- CN202520227096.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing torque wrenches are usually mechanically adjustable or digitally adjustable, which cannot simultaneously display torque values and provide mechanical alerts, resulting in a single method of information acquisition that is difficult for users to grasp.
A mechanically detachable digital torque wrench was designed, which combines a torque detection strain sensor and a display screen. The ratchet and pawl assembly achieves a combination of mechanical alerts and digital display, providing torque information.
It enables accurate and timely acquisition of torque information through both mechanical reminders and digital displays, meeting users' diverse information acquisition needs.
Smart Images
Figure CN223777046U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wrench technology, specifically a mechanically adjustable digital torque wrench. Background Technology
[0002] A torque wrench, also called a torque-adjustable wrench, is a type of wrench. Based on the power source, they can be divided into: electric torque wrenches, pneumatic torque wrenches, hydraulic torque wrenches, and manual torque wrenches. Manual torque wrenches can be further divided into: preset type, fixed value type, dial type, digital display type, slip type, bending type, and kilogram wrench. When the tightness of screws and bolts is critical, a torque wrench allows the operator to apply a specific torque value.
[0003] Current torque wrenches are typically mechanically adjustable or digitally displayed, and are usually designed separately. They lack the ability to both display torque values and provide mechanical alerts, resulting in limited and often ineffective alerts that are difficult for users to detect. Utility Model Content
[0004] The purpose of this invention is to provide a mechanically adjustable digital torque wrench to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a mechanically adjustable digital torque wrench, comprising:
[0006] Handle housing, wrench head housing;
[0007] The handle shell and the wrench head shell are both hollow. An interface ring is provided inside the wrench head shell. The middle of the upper surface of the interface ring is rotatably connected to the upper end of the wrench head shell through a rotating shaft. A ratchet and pawl assembly is directly provided on the outer wall of the interface ring and the inner wall of the wrench head shell.
[0008] A support shaft is connected to the right side of the wrench head housing. The right end of the support shaft is movably inserted into the left side of the handle housing. A rotating shaft is inserted into the outer wall of the support shaft. The support shaft is rotatably connected to the left side of the handle housing through the rotating shaft. A torque detection strain sensor is provided on the outer wall of the support shaft.
[0009] Preferably, the ratchet and pawl assembly includes ratchet teeth formed on the outer wall of the interface ring and a pawl rotatably connected inside the wrench head housing. The end of the pawl engages with the ratchet teeth, and a return spring is connected between the outer wall of the pawl and the inner wall of the wrench head housing.
[0010] Preferably, the interface ring has an internal hexagonal opening or a square opening.
[0011] Preferably, a display screen is provided on the outer wall of the handle housing, and the signal output terminal of the torque detection strain sensor is connected to the display screen.
[0012] Preferably, a support block is provided inside the handle housing. The support block is located on the right side of the support shaft. Positioning grooves are provided at corresponding positions on the left side wall of the support block and the right side wall of the support shaft. Ball bearings are provided between the positioning grooves on both sides. A support spring is connected to the right side of the support block. A moving block is connected to the right side of the support spring. A screw is rotatably connected to the right side wall of the moving block. The right side of the screw passes through the right side wall of the handle housing and is threadedly connected to the right side wall of the handle housing.
[0013] Preferably, a groove is provided on the outer wall of the movable block, and a slide bar is provided on the inner wall of the handle housing that is slidably connected to the groove.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] In use, there are two methods: one is to provide mechanical reminders through the cooperation between the ball bearing, torque detection strain sensor, and support block; the other is to provide digital display through the cooperation between the torque detection strain sensor and the display screen, so that users can obtain torque information in a timely and accurate manner. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This utility model Figure 1 A schematic diagram of the structure viewed from below;
[0018] Figure 3 This is a schematic diagram of the internal structure of the handle shell and wrench head shell of this utility model.
[0019] In the diagram: 1. Handle housing; 2. Wrench head housing; 3. Display screen; 4. Interface ring; 5. Support shaft; 6. Ratchet teeth; 7. Pawl; 8. Return spring; 9. Torque detection strain sensor; 10. Support block; 11. Ball bearing; 12. Support spring; 13. Moving block; 14. Screw. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] Example 1:
[0023] Please see Figure 1-3 This utility model provides a technical solution: a mechanically adjustable digital torque wrench, comprising: a handle housing 1 and a wrench head housing 2;
[0024] Both the handle housing 1 and the wrench head housing 2 are hollow. An interface ring 4 is located inside the wrench head housing 2. The upper surface of the interface ring 4 is rotatably connected to the upper interior of the wrench head housing 2 via a pivot. A ratchet and pawl assembly is directly installed on the outer wall of the interface ring 4 and the inner wall of the wrench head housing 2. A support shaft 5 is connected to the right side of the wrench head housing 2. The right end of the support shaft 5 is movably inserted into the left interior of the handle housing 1. A pivot is inserted into the outer wall of the support shaft 5, and the support shaft 5 is rotatably connected to the left interior of the handle housing 1 via the pivot. A torque detection strain sensor 9 is installed on the outer wall of the support shaft 5. A display screen 3 is installed on the outer wall of the handle housing 1, and the signal output terminal of the torque detection strain sensor 9 is connected to the display screen 3. The interface ring 4 has an internal hexagonal or square opening.
[0025] Analysis of the above content: When using, insert the corresponding hex socket wrench into the interface ring 4 (by changing different socket wrenches, it can be used to tighten bolts of different sizes), place the socket wrench on the corresponding bolt or nut, and hold the handle shell 1 to tighten the bolt or nut by using the wrench head shell 2, interface ring 4, and socket wrench.
[0026] When tightening, the wrench head shell 2 causes the support shaft 5 to tilt inside the handle shell 1. The support shaft 5 deforms under force, and the torque is calculated based on the deformation of the support shaft 5 detected by the torque detection strain sensor 9 (the torque detection strain sensor 9 is an existing torque strain gauge, and the testing principle is existing technology, which will not be described in detail here). The torque value detected by the torque detection strain sensor 9 is displayed on the display screen 3.
[0027] Example 2:
[0028] Please see Figure 1-3The present invention provides a technical solution based on embodiment one: the ratchet and pawl assembly includes ratchet teeth 6 formed on the outer wall of the interface ring 4 and pawl 7 rotatably connected inside the wrench head housing 2. The end of the pawl 7 engages with the ratchet teeth 6, and a return spring 8 is connected between the outer wall of the pawl 7 and the inner wall of the wrench head housing 2.
[0029] Analysis of the above content: Based on the ratchet 7 restricting the interface ring 4 and the ratchet teeth to rotate counterclockwise, when rotating clockwise on the ratchet teeth on the outer wall of the interface ring 4, it can tighten the bolt or nut (when the interface ring 4 and the ratchet teeth need to be rotated in the opposite direction, another torque wrench can be set, or the existing method can be used to set two ratchet 7s in the wrench head shell 2 and switch them to control the rotation direction of the interface ring 4 and the ratchet teeth. This is the existing technology and will not be elaborated here).
[0030] Example 3:
[0031] Please see Figure 1-3 This utility model provides a technical solution based on Embodiment 1: A support block 10 is provided inside the handle housing 1, located to the right of the support shaft 5. Positioning grooves are formed on the left side wall of the support block 10 and the right side wall of the support shaft 5, respectively. Ball bearings 11 are positioned between the positioning grooves on both sides. A support spring 12 is connected to the right side of the support block 10, and a moving block 13 is connected to the right side of the support spring 12. A screw 14 is rotatably connected to the right side wall of the moving block 13, and the right side of the screw 14 passes through the right side wall of the handle housing 1 and is threadedly connected to the right side wall of the handle housing 1. A sliding groove is formed on the outer wall of the moving block 13, and a sliding strip is provided on the inner wall of the handle housing 1, which is slidably connected to the sliding groove.
[0032] Analysis of the above content: The adjustment of screw 14 can drive the moving block 13 to move, so that the support spring 12 is compressed or extended, thereby controlling the pressure on the support block 10, thereby changing the force between the support block 10 and the support shaft 5. When the torque of the support shaft 5 overcomes the elastic force of the support spring 12, the end of the support shaft 5 contacts the inner wall of the handle housing 1 and makes a sound to remind that the torque value has been reached.
[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A mechanically adjustable digital torque wrench, characterized in that, include: Handle housing (1), wrench head housing (2); The handle shell (1) and the wrench head shell (2) are both hollow. An interface ring (4) is provided inside the wrench head shell (2). The middle part of the upper surface of the interface ring (4) is rotatably connected to the upper part of the wrench head shell (2) through a rotating shaft. A ratchet and pawl assembly is directly provided between the outer wall of the interface ring (4) and the inner wall of the wrench head shell (2). The right side of the wrench head shell (2) is connected to a support shaft (5). The right end of the support shaft (5) is movably inserted into the left side of the handle shell (1). A rotating shaft is inserted into the outer wall of the support shaft (5). The support shaft (5) is rotatably connected to the left side of the handle shell (1) through the rotating shaft. A torque detection strain sensor (9) is provided on the outer wall of the support shaft (5).
2. The mechanically adjustable digital torque wrench according to claim 1, characterized in that: The ratchet and pawl assembly includes ratchet teeth (6) formed on the outer wall of the interface ring (4) and a pawl (7) rotatably connected inside the wrench head housing (2). The end of the pawl (7) engages with the ratchet teeth (6), and a return spring (8) is connected between the outer wall of the pawl (7) and the inner wall of the wrench head housing (2).
3. The mechanically adjustable digital torque wrench according to claim 1, characterized in that: The interface ring (4) has an internal hexagonal opening or a square opening inside.
4. The mechanically adjustable digital torque wrench according to claim 1, characterized in that: A display screen (3) is provided on the outer wall of the handle housing (1), and the signal output terminal of the torque detection strain sensor (9) is connected to the display screen (3).
5. A mechanically adjustable digital torque wrench according to claim 1, characterized in that: The handle housing (1) is provided with a support block (10) inside. The support block (10) is located on the right side of the support shaft (5). The left side wall of the support block (10) and the right side wall of the support shaft (5) are provided with positioning grooves at corresponding positions. A ball bearing (11) is provided between the positioning grooves on both sides. A support spring (12) is connected to the right side of the support block (10). A moving block (13) is connected to the right side of the support spring (12). A screw (14) is rotatably connected to the right side wall of the moving block (13). The right side of the screw (14) passes through the right side wall of the handle housing (1) and is threadedly connected to the right side wall of the handle housing (1).
6. A mechanically adjustable digital torque wrench according to claim 5, characterized in that: The outer wall of the movable block (13) is provided with a sliding groove, and the inner wall of the handle housing (1) is provided with a sliding strip that is slidably connected to the sliding groove.