Torque control structure for torque wrench
By designing a control mechanism including ratchet, lever, T-shaped cylindrical pin and umbrella spring in the torque wrench, the problem of inconvenient adjustment of the rotation direction of the torque wrench and unreliable locking is solved, and more stable torque control and direction are achieved Adjustment improves practicality.
Patent Information
- Application Number
- CN202420002689.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-02
AI Technical Summary
When used in the existing torque wrench, the torque control part is not convenient to adjust the rotation direction, and the lock is not firm, which easily leads to direction changes and is less practical.
A torque control structure including the head of the wrench and the control mechanism is designed. Through the combination of ratchet, lever, T-shaped cylindrical pin, umbrella spring and reversing plunger, torque control and direction adjustment are achieved to ensure that the wrench is in use. Stability of direction during the process.
It effectively avoids automatic direction changes in the wrench during use, improves the practicality of the wrench and the reliability of the locking, facilitates adjustment of the rotation direction, and ensures stable torque control.
Smart Images
Figure CN222155410U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of torque wrenches, in particular to a torque control structure for a torque wrench. Background Art
[0002] A torque wrench, also known as a torque wrench or moment wrench, is a commonly used wrench. Currently, the common ones on the market are manual torque wrenches, electric torque wrenches, and pneumatic torque wrenches. Torque wrenches are widely used in assembly lines that have strict requirements on the tightening process, so that the torque values of each fastener of the product are consistent, and the quality of the products produced is guaranteed.
[0003] The existing torque wrench has certain disadvantages when in use. The torque regulating part on the existing torque wrench is not convenient for adjusting the rotation direction when in use, and the locking is not secure, which easily causes the direction to change during the use of the wrench, and the practicality is low. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a torque control structure for a torque wrench which can conveniently adjust the rotation direction, lock more securely, avoid the wrench causing a change in direction during use, and improve practicality.
[0005] Technical Solution
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a torque control structure for a torque wrench, comprising a wrench head and a regulating mechanism, wherein the right end of the wrench head is fixedly connected to a torque wrench handle, an active cavity is arranged inside the wrench head, a cover groove is arranged on the top of the active cavity, an end cover is arranged on the cover groove through a detachable fixed cover of a bolt, a fixed column is fixedly arranged at the bottom of the active cavity, a circular hole is arranged on the end cover, the fixed column passes through the end cover by cooperating with the circular hole, a clamping block is fixedly arranged at the top of the fixed column, the regulating mechanism comprises a ratchet, the ratchet fixed sleeve is arranged on the fixed column, a lever is rotatably arranged at the bottom of the wrench head, and the lever extends into the active cavity, the lever is dialed A paddle is fixedly provided at the bottom end of the rod, and two groups of fixed plates are symmetrically fixedly connected at the bottom end of the wrench head. T-shaped cylindrical pins are slidably provided on the two groups of fixed plates, and springs are sleeved on the two groups of T-shaped cylindrical pins. Both ends of each group of springs are respectively connected with the fixed plate and the T-shaped cylindrical pin. A pin hole is provided on the paddle, and the T-shaped cylindrical pin is inserted into the pin hole. A reversing paddle block is fixedly sleeved on the paddle rod, and two groups of fixed shafts are symmetrically fixed in the movable cavity. Ratchets are rotatably sleeved on the two groups of fixed shafts, and two groups of umbrella-shaped springs are symmetrically fixedly connected on the inner wall of the movable cavity. The inner sides of the two groups of umbrella-shaped springs are respectively fixedly connected with the outer sides of the two groups of pawls, and both groups of pawls can engage with the ratchet.
[0007] Preferably, an ejection mechanism is provided on the wrench head, the fixed column and the block, and the ejection mechanism includes a push rod. The fixed column and the block are connected with a sliding hole. The push rod is slidably installed in the fixed column and the block by cooperating with the sliding hole. A countersunk hole is provided at the bottom end of the wrench head, and the countersunk hole is connected with the sliding hole. A pressure plate is fixedly connected to the bottom end of the push rod, and a pressure plate sliding cover is installed on the countersunk hole. Three groups of return springs are connected in an annular manner at equal intervals in the countersunk hole, and the bottom ends of the three groups of return springs are fixedly connected to the pressure plate. The top end of the push rod is horizontal with the top end of the block, and the bottom end of the pressure plate is horizontal with the bottom end of the wrench head.
[0008] Preferably, a fastening pad is fixedly connected to the top of the cover-mounting groove on the movable cavity of the wrench head.
[0009] Preferably, pull rings are fixedly connected to the outer sides of the two groups of T-shaped cylindrical pins.
[0010] Preferably, the fixing sleeve on the torque wrench handle is provided with an anti-slip handle.
[0011] Compared with the prior art, the utility model has the following beneficial effects: when in use, the bolt sleeve is installed through the clamping block, and when controlling the rotatable direction of the wrench, the T-shaped cylindrical pin is pulled out from the pin hole, and the paddle is toggled to make the paddle drive the reversing paddle block to rotate, so that the reversing paddle block switches between supporting the front pawl and the rear pawl. When the reversing paddle block supports the front pawl, the umbrella spring located at the front side of the active cavity is compressed, and the umbrella spring at the rear side is at its original length. At this time, the rear pawl clamps the ratchet wheel, so that the ratchet wheel can only rotate counterclockwise. When the reversing paddle block supports the front pawl, the umbrella spring located at the front side of the active cavity is compressed, and the rear side umbrella spring is at its original length. At this time, the rear side pawl clamps the ratchet wheel, so that the ratchet wheel can only rotate counterclockwise. When the block is switched to support the pawl on the rear side, the umbrella spring on the rear side is compressed, and the pawl on the front side jams the ratchet under the action of the umbrella spring, so that the ratchet can only rotate clockwise, thereby controlling the torque reduction and increase of the switching torque wrench. After the direction is switched, the paddle can be pinned by inserting the T-shaped cylindrical pin into the pin hole. This can avoid the automatic change of the paddle during the use of the wrench, thereby facilitating the adjustment of the rotation direction, and locking more securely, avoiding the change of direction of the wrench during use, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the axonometric structure of the utility model;
[0013] Figure 2 It is a schematic diagram of the bottom axonometric structure of the utility model;
[0014] Figure 3 It is a schematic diagram of the axonometric structure of the wrench head after the end cover is removed in the utility model;
[0015] Figure 4 It is a schematic diagram of the structure of the wrench head after the end cover is removed in the utility model;
[0016] Figure 5 It is a schematic diagram of the bottom axonometric structure of the wrench head in the utility model;
[0017] Figure 6 It is a partial enlarged structural schematic diagram of A of the utility model;
[0018] Markings in the attached figure: 1. wrench head; 2. torque wrench handle; 3. end cover; 4. fixing column; 5. block; 6. ratchet; 7. lever; 8. paddle; 9. fixing plate; 10. T-shaped cylindrical pin; 11. spring; 12. reversing block; 13. fixing shaft; 14. pawl; 15. umbrella spring; 16. push rod; 17. pressure plate; 18. reset spring; 19. fastening pad; 20. pull ring; 21. anti-slip handle. DETAILED DESCRIPTION
[0019] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0020] Example
[0021] See also Figure 1-Figure 6The utility model discloses a torque control structure for a torque wrench, comprising a wrench head 1, a torque wrench handle 2 is fixedly connected to the right end of the wrench head 1, a movable cavity is arranged inside the wrench head 1, a cover groove is arranged on the top of the movable cavity, an end cover 3 is arranged on the cover groove through a detachable fixed cover of a bolt, a fixing column 4 is fixedly arranged at the bottom of the movable cavity, a round hole is arranged on the end cover 3, the fixing column 4 passes through the end cover 3 by cooperating with the round hole, a clamping block 5 is fixedly arranged on the top of the fixing column 4, a ratchet 6 is fixedly sleeved on the fixing column 4, a lever 7 is rotatably arranged at the bottom of the wrench head 1, and the lever 7 extends into the movable cavity, and a paddle 8 is fixedly arranged at the bottom of the lever 7 The bottom end of the wrench head 1 is symmetrically fixedly connected with two sets of fixing plates 9, and the two sets of fixing plates 9 are slidably provided with T-shaped cylindrical pins 10, and the two sets of T-shaped cylindrical pins 10 are sleeved with springs 11, and both ends of each set of springs 11 are respectively connected with the fixing plate 9 and the T-shaped cylindrical pin 10, and the paddle 8 is provided with a pin hole, and the T-shaped cylindrical pin 10 is inserted into the pin hole. A reversing paddle block 12 is fixedly sleeved on the paddle 7, and two sets of fixed shafts 13 are symmetrically fixed in the active cavity, and ratchet pawls 14 are rotatably sleeved on the two sets of fixed shafts 13. Two sets of umbrella springs 15 are symmetrically fixedly connected on the inner wall of the active cavity, and the inner sides of the two sets of umbrella springs 15 are respectively connected with the inner sides of the two sets of umbrella springs 15. The two groups of pawls 14 are fixedly connected on the outside, and both groups of pawls 14 can be engaged with the ratchet 6; when in use, the bolt sleeve is installed through the clamping block 5, and when controlling the rotatable direction of the wrench, the T-shaped cylindrical pin 10 is pulled out of the pin hole, and the paddle 8 is toggled to drive the reversing block 12 to rotate, so that the reversing block 12 switches between supporting the front pawl 14 and the rear pawl 14. When the reversing block 12 supports the front pawl 14, the umbrella spring 15 located on the front side of the active cavity is compressed, and the umbrella spring 15 on the rear side is at its original length. At this time, the rear pawl 14 clamps the ratchet 6, so that the ratchet 6 can only be moved. When the reversing block 12 is switched to press against the pawl 14 at the rear side, the umbrella spring 15 at the rear side is compressed, and the pawl 14 at the front side clamps the ratchet 6 under the action of the umbrella spring 15, so that the ratchet 6 can only rotate clockwise, thereby controlling the torque reduction and increase of the switching torque wrench. After the direction is switched, the paddle 8 can be pinned by inserting the T-shaped cylindrical pin 10 into the pin hole, so that the paddle 8 can be prevented from automatically changing during the use of the wrench, thereby facilitating the adjustment of the rotation direction, and the locking is more secure, avoiding the change of direction of the wrench during use, and improving practicality.
[0022] The wrench head 1, the fixed column 4 and the block 5 are provided with an ejection mechanism, which includes an ejector rod 16, a sliding hole is connected to the fixed column 4 and the block 5, and the ejector rod 16 is slidably installed in the fixed column 4 and the block 5 by cooperating with the sliding hole. A countersunk hole is provided at the bottom end of the wrench head 1, and the countersunk hole is connected to the sliding hole. A pressure plate 17 is fixedly connected to the bottom end of the ejector rod 16, and the pressure plate 17 sliding cover is installed on the countersunk hole. Three groups of reset springs 18 are connected in an annular manner at equal distances in the countersunk hole, and the bottom ends of the three groups of reset springs 18 are all connected to the pressure plate 17. The plate 17 is fixedly connected, the top of the push rod 16 is horizontal with the top of the block 5, and the bottom of the pressure plate 17 is horizontal with the bottom of the wrench head 1; by setting the ejection mechanism, the top of the push rod 16 is initially horizontal with the top of the block 5, and the bottom of the pressure plate 17 is horizontal with the bottom of the wrench head 1, so that the bolt sleeve can be put on the block 5. When the bolt sleeve needs to be replaced, the push rod 16 is pressed by the pressure plate 17 to compress the return spring 18, and the push rod 16 is ejected from the block 5, thereby pushing the bolt sleeve off the block 5, which is convenient for disassembly of the bolt sleeve.
[0023] A fastening pad 19 is fixedly connected to the top of the cover-mounting groove on the movable cavity of the wrench head 1; by providing the fastening pad 19, the end cover 3 can be mounted more tightly and securely.
[0024] The outer sides of the two groups of T-shaped cylindrical bolts 10 are fixedly connected with pull rings 20; by providing the pull rings 20, it is possible to make the T-shaped cylindrical bolts 10 more convenient when being pulled outward.
[0025] The torque wrench handle 2 is fixedly sleeved with an anti-skid grip sleeve 21 ; by providing the anti-skid grip sleeve 21 , it is possible to prevent the hand from slipping when the torque wrench handle 2 is used to rotate the wrench.
[0026] The utility model discloses a torque control structure for a torque wrench. The working principle is that when in use, the bolt sleeve is installed through the clamping block 5. When controlling the rotatable direction of the wrench, the T-shaped cylindrical pin 10 is pulled out from the pin hole, and the paddle 8 is toggled so that the paddle 8 drives the reversing block 12 to rotate, so that the reversing block 12 switches between supporting the front pawl 14 and the rear pawl 14. When the reversing block 12 supports the front pawl 14, the umbrella spring 15 located at the front side of the active cavity is compressed, and the umbrella spring 15 at the rear side is at its original length. At this time, The pawl 14 on the rear side clamps the ratchet 6 so that the ratchet 6 can only rotate counterclockwise. When the reversing block 12 switches to support the pawl 14 on the rear side, the umbrella spring 15 on the rear side is compressed, and the pawl 14 on the front side clamps the ratchet 6 under the action of the umbrella spring 15, so that the ratchet 6 can only rotate clockwise, thereby controlling the torque reduction and increase of the switching torque wrench. After the direction is switched, the paddle 8 can be pinned by inserting the T-shaped cylindrical pin 10 into the pin hole, so as to avoid the automatic change of the paddle 8 during the use of the wrench.
[0027] The utility model provides a torque control structure for a torque wrench, and its installation method, connection method or setting method are all common mechanical methods, and can be implemented as long as it can achieve its beneficial effects; technicians in this industry only need to install and operate it according to the accompanying instruction manual.
[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.
Claims
1. A torque control structure for a torque wrench, comprising a wrench head (1), characterized in that: It also includes regulatory agencies; A wrench head (1), the right end of which is fixedly connected to a torque wrench handle (2), a movable cavity is provided inside the wrench head (1), a cover groove is provided at the top of the movable cavity, an end cover (3) is provided on the cover groove via a detachable fixed cover with bolts, a fixing column (4) is fixedly provided at the bottom of the movable cavity, a circular hole is provided on the end cover (3), the fixing column (4) passes through the end cover (3) by cooperating with the circular hole, and a clamping block (5) is fixedly provided at the top of the fixing column (4); The regulating mechanism comprises a ratchet (6), the ratchet (6) is fixedly sleeved on a fixed column (4), a lever (7) is rotatably provided at the bottom of a wrench head (1), and the lever (7) extends into a movable cavity, a lever (8) is fixedly provided at the bottom end of the lever (7), two groups of fixed plates (9) are symmetrically fixedly connected at the bottom end of the wrench head (1), T-shaped cylindrical latches (10) are slidably provided on the two groups of fixed plates (9), springs (11) are sleeved on the two groups of T-shaped cylindrical latches (10), and both ends of each group of springs (11) are respectively connected to the fixed plate (9). The movable cavity is connected to a T-shaped cylindrical pin (10), a pin hole is provided on the paddle (8), the T-shaped cylindrical pin (10) is inserted into the pin hole, a reversing paddle block (12) is fixedly sleeved on the paddle rod (7), two groups of fixed shafts (13) are symmetrically fixedly provided in the movable cavity, ratchet pawls (14) are rotatably sleeved on the two groups of fixed shafts (13), two groups of umbrella-shaped springs (15) are symmetrically fixedly connected to the inner wall of the movable cavity, the inner sides of the two groups of umbrella-shaped springs (15) are respectively fixedly connected to the outer sides of the two groups of ratchet pawls (14), and the two groups of ratchet pawls (14) can be engaged with the ratchet wheel (6).
2. A torque control structure for a torque wrench according to claim 1, characterized in that: The wrench head (1), the fixed column (4) and the clamping block (5) are provided with an ejection mechanism, the ejection mechanism comprising an ejector rod (16), a sliding hole is connected to the fixed column (4) and the clamping block (5), the ejector rod (16) is installed in the fixed column (4) and the clamping block (5) by sliding in cooperation with the sliding hole, a countersunk hole is provided at the bottom end of the wrench head (1), and the countersunk hole is connected to the sliding hole, a pressure plate (17) is fixedly connected to the bottom end of the ejector rod (16), and a sliding cover of the pressure plate (17) is installed on the countersunk hole, and three groups of return springs (18) are connected in an annular manner at equal intervals in the countersunk hole, and the bottom ends of the three groups of return springs (18) are fixedly connected to the pressure plate (17), the top end of the ejector rod (16) is horizontal with the top end of the clamping block (5), and the bottom end of the pressure plate (17) is horizontal with the bottom end of the wrench head (1).
3. A torque control structure for a torque wrench as claimed in claim 2, characterized in that: A fastening pad (19) is fixedly connected to the top of the cover groove on the movable cavity of the wrench head (1).
4. A torque control structure for a torque wrench as claimed in claim 3, characterized in that: The outer sides of the two groups of T-shaped cylindrical latch pins (10) are both fixedly connected with pull rings (20).
5. A torque control structure for a torque wrench as claimed in claim 4, characterized in that: The torque wrench handle (2) is fixedly sleeved with an anti-slip handle sleeve (21).