Adjusting mechanism of electric wrench

By installing an adjustment device at the lower end of the electric wrench head and shock-absorbing devices at the front and rear ends of the handle base, the problems of wrench inability to be adjusted and vibration are solved, enabling wrench head angle adjustment and vibration reduction, thus improving user comfort and safety.

CN224059729UActive Publication Date: 2026-03-31ZHEJIANG LELIN IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-14
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Existing electric wrenches are not adjustable, resulting in limited working conditions, and the continuous vibration generated by prolonged use can cause arm injuries to users.

Method used

An adjustment device is installed at the lower end of the wrench head, which is connected to the handle seat by bolts, and the angle is adjusted by rotating the cap; shock absorption devices are installed at both ends of the handle seat, and two sets of shock absorption components are used to reduce vibration.

Benefits of technology

It enables angle adjustment and quick replacement of the wrench head, reducing wrist injury and vibration during operation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224059729U_ABST
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Abstract

The utility model discloses an adjusting mechanism of an electric wrench, and relates to the technical field of electric wrenches, the adjusting mechanism of the electric wrench comprises the electric wrench, the electric wrench comprises a handle seat, the lower end of the handle seat is provided with a battery pack, the upper side of the front end of the battery pack is provided with a battery dismounting switch, and the handle seat is provided with a damping device. A notch is formed in the upper end of the handle base, an adjusting device is arranged in the notch, a wrench head is arranged at the upper end of the adjusting device, a machine head is arranged at the front end of the wrench head, a sleeve is arranged at the front end of the machine head, four sets of bolts are arranged on the machine head, and the wrench head is connected with the machine head through the bolts in a bolted mode. A switch is arranged at the front end of the handle seat, a forward and reverse rotation switch is arranged on the wrench head, and the problems that the working condition is limited due to the fact that a wrench cannot be adjusted, and the arm of a user is injured due to continuous vibration generated by long-time use are solved.
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Description

Technical Field

[0001] This utility model relates to the field of electric wrench technology, specifically to an adjustment mechanism for an electric wrench. Background Technology

[0002] An electric wrench is an electrically powered tool primarily used for tightening and loosening bolts and nuts. It is widely used in steel structure bridges, factory construction, chemical industries, and power generation equipment installation, and is particularly suitable for initial tightening, final tightening, and applications requiring strict torque control for high-strength bolts. Electric wrenches are characterized by their ease of operation, time and labor savings, and stable torque, making them an indispensable tool in modern industrial production.

[0003] An electric wrench, as disclosed in announcement number CN203973458U, comprises a main body, a switch, a power supply, a rear section, a column, a front section, a handle, a motor, a wrench shaft, and a fly weight. The front and rear sections form the motor housing, and the motor housing, main body, and power supply together constitute the electric wrench. The front section is connected to the column, and a switch is connected to the front end of the junction between the front section and the column. A handle is connected to the lower rear end of the column. A microcontroller is also mounted on the main body, comprising a microcontroller device and a time setting module. The microcontroller device is located between the power supply and the column, and the time setting module is located in front of the microcontroller device. The microcontroller device is connected to both the switch and the time setting module. The electric wrench provided by this invention, through the microcontroller device, makes the striking force of the wrench controllable, ensures stable and firm tightening of parts, and guarantees the long-term durability of both the electric wrench and the microcontroller device.

[0004] The aforementioned device cannot be adjusted during use, resulting in limited working conditions, and the continuous vibration generated during prolonged use can cause arm injuries to the user. Therefore, we propose an adjustment mechanism for an electric wrench to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide an adjustment mechanism for an electric wrench, so as to solve the problems mentioned in the background art that the existing wrenches cannot be adjusted, resulting in limited working conditions, and the continuous vibration generated by long-term use causes damage to the user's arm.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustment mechanism for an electric wrench, comprising an electric wrench, the electric wrench including a handle base, a battery pack disposed at the lower end of the handle base, a battery removal switch disposed on the upper front side of the battery pack, a shock-absorbing device disposed on the handle base, a slot opened at the upper end of the handle base, an adjustment device disposed within the slot, a wrench head disposed at the upper end of the adjustment device, a machine head disposed at the front end of the wrench head, a sleeve disposed at the front end of the machine head, bolts disposed on the machine head, four sets of bolts disposed, the wrench head connected to the machine head bolts via bolts, a switch disposed at the front end of the handle base, and a forward / reverse switch disposed on the wrench head.

[0007] Preferably, the adjusting device includes a connecting block, a rotating groove, a screw, a rotating cap, a nut, and a protrusion. The connecting block is disposed at the lower end of the wrench head, a rotating groove is formed in the connecting block, a screw is disposed in the rotating groove, the protrusion is disposed on one side of the handle seat, a rotating cap is disposed on one side of the screw, a rotating cap is disposed on the other side of the screw, and the nut is disposed in the protrusion.

[0008] Preferably, the shock absorption device includes a first shock absorber and a second shock absorber.

[0009] Preferably, the first shock absorber includes a first shock absorber plate, a first guide rod, a first spring, and a first damping rod. The first spring is disposed at the front end of the handle seat, and the first shock absorber plate is disposed at the front end of the first spring. The first guide rods are disposed around the first shock absorber plate, and the lower ends of the four sets of first guide rods are disposed on the handle seat. The first damping rod is disposed inside the first spring.

[0010] Preferably, the second damping component includes a second damping plate, a second guide rod, a second spring, and a second damping rod. The second spring is disposed at the rear end of the handle seat, and the second damping plate is disposed at the front end of the second spring. The second damping plate is provided with second guide rods around its perimeter, and the lower ends of the four sets of second guide rods are disposed on the handle seat. The second damping rod is disposed inside the second spring.

[0011] Preferably, rubber anti-slip sleeves are provided on both the left and right sides of the handle seat, and anti-slip films are provided on both the first and second shock-absorbing plates.

[0012] Preferably, a motor is provided inside the wrench head, and a heat dissipation vent is provided at the rear end of the motor.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model provides an adjustment device at the lower end of the wrench head, connects the wrench head and the handle seat with bolts, fixes the wrench head by rotating the rotating cap, and adjusts the wrench head angle by rotating the rotating cap in reverse. The wrench head can also be quickly replaced by unscrewing the screw, thus solving the problem that the wrench cannot be adjusted, resulting in limited working conditions.

[0015] (2) By installing shock-absorbing devices at both ends of the handle base, the vibration generated by the electric wrench during operation is reduced through two sets of shock-absorbing components, thereby reducing damage to the user's wrist and solving the problem of continuous vibration caused by long-term use leading to arm injury. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a front view of the present invention;

[0018] Figure 3 This is an unfolded view of the shock absorption device of this utility model;

[0019] Figure 4 This is an overall unfolded view of the present invention;

[0020] In the diagram: 1. Electric wrench; 2. Battery removal switch; 3. Handle base; 4. Wrench head; 5. Forward / reverse switch; 6. Head; 7. Socket; 8. Bolt; 9. Rubber anti-slip sleeve; 10. Switch; 11. First shock absorber; 111. First shock absorber plate; 112. First guide rod; 113. First spring; 114. First damping rod; 12. Second shock absorber; 121. Second shock absorber plate; 122. Second guide rod; 123. Second spring; 124. Second damping rod; 13. Adjustment device; 131. Connecting block; 132. Rotating groove; 133. Screw; 134. Rotating cap; 135. Nut; 136. Protrusion; 14. Heat dissipation vent; 15. Battery pack. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4This utility model provides an embodiment of an adjusting mechanism for an electric wrench, comprising an electric wrench 1, the electric wrench 1 including a handle base 3, a battery pack 15 disposed at the lower end of the handle base 3, a battery removal switch 2 disposed on the upper side of the front end of the battery pack 15, a shock-absorbing device disposed on the handle base 3, a slot opened at the upper end of the handle base 3, an adjusting device 13 disposed in the slot, a wrench head 4 disposed at the upper end of the adjusting device 13, a machine head 6 disposed at the front end of the wrench head 4, a sleeve 7 disposed at the front end of the machine head 6, bolts 8 disposed on the machine head 6, four sets of bolts 8 disposed, the wrench head 4 being bolted to the machine head 6 via bolts 8, a switch 10 disposed at the front end of the handle base 3, and a forward / reverse switch disposed on the wrench head 4. 5. By providing an adjustment device 13 at the lower end of the wrench head 4, the wrench head 4 and the handle base 3 are connected by a screw 133. The wrench head 4 is fixed by rotating the rotating cap 134, and the angle of the wrench head 4 can be adjusted by rotating the rotating cap 134 in reverse. The wrench head 4 can also be quickly replaced by unscrewing the screw 133. This solves the problem of limited working conditions caused by the inability to adjust the wrench. By providing shock-absorbing devices at both the front and rear ends of the handle base 3, the vibration generated by the electric wrench 1 during operation is reduced through two sets of shock-absorbing components, thereby reducing damage to the user's wrist and solving the problem of continuous vibration caused by prolonged use leading to arm injury.

[0023] Please see Figure 4 The adjusting device 13 includes a connecting block 131, a rotating groove 132, a screw 133, a rotating cap 134, a nut 135, and a protrusion 136. The connecting block 131 is located at the lower end of the wrench head 4. A rotating groove 132 is formed in the connecting block 131. A screw 133 is set in the rotating groove 132. The protrusion 136 is located on one side of the handle seat 3. A rotating cap 134 is set on one side of the screw 133 and on the other side of the screw 133. The nut 135 is set in the protrusion 136, which serves to adjust the angle.

[0024] Please see Figure 2 The shock absorption device includes a first shock absorber 11 and a second shock absorber 12, which serve to reduce vibration.

[0025] Please see Figure 3 The first damping component 11 includes a first damping plate 111, a first guide rod 112, a first spring 113, and a first damping rod 114. The first spring 113 is located at the front end of the handle seat 3, and the first damping plate 111 is located at the front end of the first spring 113. The first guide rods 112 are arranged around the first damping plate 111, and the lower ends of the four sets of first guide rods 112 are all located on the handle seat 3. The first damping rod 114 is located inside the first spring 113.

[0026] Please see Figure 3The second damping component 12 includes a second damping plate 121, a second guide rod 122, a second spring 123, and a second damping rod 124. The second spring 123 is located at the rear end of the handle seat 3, and the second damping plate 121 is located at the front end of the second spring 123. The second guide rods 122 are arranged around the second damping plate 121, and the lower ends of the four sets of second guide rods 122 are all located on the handle seat 3. The second damping rod 124 is located inside the second spring 123.

[0027] Please see Figure 3 Rubber anti-slip sleeves 9 are provided on both sides of the handle base 3, and anti-slip films are provided on the first damping plate 111 and the second damping plate 121 to prevent the electric wrench 1 from falling off.

[0028] Please see Figure 4 The wrench head 4 contains a motor, and the rear end of the motor has a heat dissipation vent 14 for heat dissipation.

[0029] It will be apparent to those skilled in the art that this invention 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 essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An adjustment mechanism of an electric torque wrench, comprising an electric torque wrench (1), characterized in that: The electric wrench (1) comprises a handle seat (3), the lower end of the handle seat (3) is provided with a battery pack (15), the upper side of the front end of the battery pack (15) is provided with a battery dismounting switch (2), the handle seat (3) is provided with a damping device, the upper end of the handle seat (3) is provided with a notch, the notch is provided with an adjusting device (13), the upper end of the adjusting device (13) is provided with a wrench head (4), the front end of the wrench head (4) is provided with a machine head (6), the front end of the machine head (6) is provided with a sleeve (7), the machine head (6) is provided with a bolt (8), the bolt (8) is provided with four groups, the wrench head (4) is bolted with the machine head (6) through the bolt (8), the front end of the handle seat (3) is provided with a switch (10), the wrench head (4) is provided with a forward and reverse switch (5).

2. An adjustment mechanism for an electric power wrench as defined in claim 1, wherein: The adjusting device (13) comprises a connecting block (131), a rotating groove (132), a screw rod (133), a rotating cap (134), a nut (135) and a protruding block (136), the connecting block (131) is arranged at the lower end of the wrench head (4), the rotating groove (132) is arranged in the connecting block (131), the screw rod (133) is arranged in the rotating groove (132), the protruding block (136) is arranged on one side of the handle seat (3), the screw rod (133) is provided with the rotating cap (134) on one side, the screw rod (133) is provided with the rotating cap (134) on the other side, and the nut (135) is arranged in the protruding block (136).

3. An adjustment mechanism for an electric power wrench as defined in claim 2 wherein: The damping device comprises a first damping part (11) and a second damping part (12).

4. An adjustment mechanism for an electric power wrench as defined in claim 3, wherein: The first damping part (11) comprises a first damping plate (111), a first guide rod (112), a first spring (113) and a first damping rod (114), the first spring (113) is arranged at the front end of the handle seat (3), the first spring (113) is provided with the first damping plate (111) at the front end, the first damping plate (111) is provided with the first guide rod (112) around, four groups of the first guide rod (112) are arranged on the handle seat (3) at the lower end, and the first damping rod (114) is arranged in the first spring (113).

5. An adjustment mechanism for an electric power wrench as defined in claim 4 wherein: The second damping part (12) comprises a second damping plate (121), a second guide rod (122), a second spring (123) and a second damping rod (124), the second spring (123) is arranged at the rear end of the handle seat (3), the second spring (123) is provided with the second damping plate (121) at the front end, the second damping plate (121) is provided with the second guide rod (122) around, four groups of the second guide rod (122) are arranged on the handle seat (3) at the lower end, and the second damping rod (124) is arranged in the second spring (123).

6. An adjustment mechanism for an electric power wrench as defined in claim 5 wherein: Rubber anti-skid sleeves (9) are arranged on the left and right sides of the handle seat (3), and anti-skid films are arranged on the first damping plate (111) and the second damping plate (121).

7. An adjustment mechanism for an electric power wrench as defined in claim 6 wherein: A motor is arranged in the wrench head (4), and a heat dissipation opening (14) is arranged at the rear end of the motor.

Citation Information

Patent Citations

  • Electric wrench

    CN203973458U