Lithium battery electric wrench

Abstract

The utility model relates to the technical field of wrench, specifically is a lithium cell electric wrench, including base, be provided with motor, lithium cell and switch on the base, be provided with the pivot on the motor, be provided with the sleeve on the pivot, the ring groove and recess are seted up to base outer wall, be provided with the connecting assembly in the ring groove, be provided with the handle on the connecting assembly, be provided with the knob in the recess, can promote operation comfort and ergonomics experience.

Description

Technical Field

[0001] This utility model relates to the field of wrench technology, and more specifically, to a lithium battery electric wrench. Background Technology

[0002] A lithium battery electric wrench is a portable power tool powered by a rechargeable lithium battery. Its core function is to efficiently install and remove bolts and nuts. It generates high torque rotation output through a built-in motor-driven impact mechanism and is usually equipped with a socket interface to adapt to bolts of different sizes. Its cordless design, convenient operation, and powerful performance make it widely used in fields such as automotive repair, mechanical assembly, and construction where frequent tightening or loosening of bolts is required.

[0003] For example, Chinese Patent Publication No. CN202220924385.0 discloses an electric wrench, including an electric wrench body and a lithium battery. The electric wrench body includes a head and a handle. One end of the head is provided with a socket interface. The outer surface of the handle includes a first mounting surface and a second mounting surface. A switch is provided on the first mounting surface, and a socket holder is provided on the second mounting surface. A socket is provided inside the socket holder. The socket holder includes a first socket holder and a second socket holder. The first socket holder is located on the opposite side of the switch and its outer surface is recessed. The second socket holder is located on both sides of the switch and its outer surface has grooves that match the shape of fingers. In this application, the first and second socket holders contain sockets of different sizes. When it is necessary to replace the socket, the socket can be directly taken out from the socket holder for replacement, which is simple and convenient. In addition, the outer side of the socket holder has a groove structure suitable for hand gripping, making it convenient for workers to use.

[0004] However, in the aforementioned technical solutions, the handles of lithium battery electric wrenches currently on the market are usually designed at a fixed angle to the body or output shaft. This structure has significant limitations when facing complex and ever-changing work scenarios: when the operating space is narrow and limited (such as inside an engine compartment or in a gap in equipment) or when the force direction of the bolt / nut is special, the operator is often forced to twist their wrist, arm, or even the entire body to adapt to the fixed grip angle of the tool in order to barely fit the socket onto the target bolt or nut for assembly and disassembly. This unnatural operating posture not only greatly reduces the comfort of operation, but also easily leads to muscle fatigue, soreness, or even strain of the operator during long-term operation, which seriously violates the principles of ergonomics. Furthermore, it may affect the effective transmission of torque due to poor force application angle, and even increase the risk of tool slippage causing injury or damage to the workpiece. Utility Model Content

[0005] The main objective of this invention is to provide a lithium battery electric wrench that effectively addresses the limitations of existing lithium battery electric wrenches on the market. These wrenches typically have a handle designed at a fixed angle to the body or output shaft, a structure that presents significant limitations in complex and varied work scenarios. When operating space is limited (e.g., inside an engine compartment or in equipment gaps) or the force direction of the bolt / nut is specific, the operator is often forced to twist their wrist, arm, or even entire body to adapt to the fixed grip angle, barely fitting the socket onto the target bolt or nut for assembly and disassembly. This unnatural operating posture not only greatly reduces operational comfort and can lead to muscle fatigue, soreness, and even strain during prolonged operation, severely violating ergonomic principles, but also may affect the effective transmission of torque due to an inappropriate force application angle, even increasing the risk of tool slippage causing injury or damage to the workpiece.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a lithium battery electric wrench, including a base, a motor, a lithium battery and a switch are provided on the base, a rotating shaft is provided on the motor, a sleeve is provided on the rotating shaft, an annular groove and a recess are provided on the outer wall of the base, a connecting component is provided in the annular groove, a handle is provided on the connecting component, and a knob is provided in the recess.

[0007] Preferably, both the motor and the lithium battery are fixedly mounted on the base.

[0008] Preferably, the connecting assembly has a rotating ring rotatably disposed within the annular groove, and a toothed ring is fixedly disposed on the inner wall surface of the rotating ring, with a gear meshing on one side of the toothed ring.

[0009] Preferably, the gear is provided with a rotating column, the rotating column is provided with a worm gear, and a worm is meshed on one side of the worm gear.

[0010] Preferably, the grip is fixedly mounted on the outer wall surface of the rotating ring.

[0011] Preferably, the knob is fixedly mounted on one end of the worm gear.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) When using this utility model, first turn the knob to rotate the worm gear, the worm gear drives the worm wheel to rotate, the worm wheel drives the gear to rotate through the rotating column, the gear drives the gear ring to rotate, the gear ring drives the rotating ring to rotate, and the rotating ring drives the handle to rotate. According to the operating space and the angle of force application, make the handle revolve around the rotating ring to find the most comfortable grip position. Then, put the sleeve on the bolt and nut, and you can disassemble and assemble the bolt and nut, improving the operating comfort and ergonomic experience. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a lithium battery electric wrench according to the present invention;

[0015] Figure 2 This is a schematic diagram of the connecting component in a lithium battery electric wrench according to the present invention.

[0016] In the diagram: 1. Base; 2. Motor; 3. Lithium battery; 4. Shaft; 5. Sleeve; 6. Annular groove; 7. Groove; 8. Connecting assembly; 801. Rotating ring; 802. Gear ring; 803. Gear; 804. Rotating column; 805. Worm gear; 806. Worm; 9. Handle; 10. Knob; 11. Switch. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0018] like Figure 1 As shown, a lithium battery electric wrench includes a base 1, on which a motor 2, a lithium battery 3 and a switch 11 are disposed. A rotating shaft 4 is disposed on the motor 2, and a sleeve 5 is disposed on the rotating shaft 4. An annular groove 6 and a recess 7 are disposed on the outer wall of the base 1. A connecting component 8 is disposed in the annular groove 6, and a handle 9 is disposed on the connecting component 8. A knob 10 is disposed in the recess 7.

[0019] like Figure 2 As shown, in another embodiment of the present invention, the connecting component 8 is rotatably provided with a rotating ring 801 in the annular groove 6, and a toothed ring 802 is fixedly provided on the inner wall surface of the rotating ring 801, and a gear 803 is meshed on one side of the toothed ring 802.

[0020] A rotating column 804 is provided on the gear 803, a worm gear 805 is provided on the rotating column 804, and a worm 806 is meshed on one side of the worm gear 805;

[0021] When the grip 9 needs to be rotated, the worm 806 is first rotated by the knob 10. The worm 806 drives the worm wheel 805 to rotate. The worm wheel 805 drives the gear 803 to rotate through the rotating column 804. The gear 803 drives the gear ring 802 to rotate. The gear ring 802 drives the rotating ring 801 to rotate. The rotating ring 801 drives the grip 9 to rotate, so that the grip 9 revolves around the rotating ring 801. At the same time, the self-locking characteristics of the worm 806 and the worm wheel 805 prevent the rotating ring 801 from rotating accidentally.

[0022] The working principle of this lithium battery electric wrench:

[0023] In use, first rotate the worm 806 by turning the knob 10. The worm 806 drives the worm wheel 805 to rotate. The worm wheel 805 drives the gear 803 to rotate through the rotating column 804. The gear 803 drives the gear ring 802 to rotate. The gear ring 802 drives the rotating ring 801 to rotate. The rotating ring 801 drives the handle 9 to rotate. According to the operating space and the angle of force application, the handle 9 revolves around the rotating ring 801 to find the most comfortable grip position. Then, the sleeve 5 is put on the bolt and nut, so that the bolt and nut can be disassembled and assembled, improving the operating comfort and ergonomic experience.

[0024] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A lithium battery electric wrench, comprising a base (1), characterized in that: The base (1) is provided with a motor (2), a lithium battery (3) and a switch (11). The motor (2) is provided with a rotating shaft (4) and a sleeve (5). The outer wall of the base (1) is provided with an annular groove (6) and a groove (7). A connecting component (8) is provided in the annular groove (6). A handle (9) is provided on the connecting component (8). A knob (10) is provided in the groove (7).

2. The lithium battery electric wrench according to claim 1, characterized in that: The motor (2) and lithium battery (3) are both fixedly mounted on the base (1).

3. A lithium battery electric wrench according to claim 2, characterized in that: The connecting assembly (8) has a rotating ring (801) rotatably disposed in the annular groove (6), and a toothed ring (802) is fixedly disposed on the inner wall surface of the rotating ring (801). A gear (803) is meshed on one side of the toothed ring (802).

4. A lithium battery electric wrench according to claim 3, characterized in that: A rotating column (804) is provided on the gear (803), a worm gear (805) is provided on the rotating column (804), and a worm (806) is meshed on one side of the worm gear (805).

5. A lithium battery electric wrench according to claim 4, characterized in that: The grip (9) is fixedly installed on the outer wall surface of the rotating ring (801).

6. A lithium battery electric wrench according to claim 5, characterized in that: The knob (10) is fixedly installed on one end of the worm (806).

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