Electric wrench with conversion function

Abstract

The utility model provides a kind of electric wrench with conversion function, including electric wrench, converter, converter includes input connector and output connector, converter is installed on electric wrench by input connector, input connector is fixedly connected with output connector, output connector includes fixed frame, sliding slot, movable seat and magnetic attraction type bit holder, sliding slot and fixed frame are integrated structure, movable seat outside is equipped with locating block, locating block is embedded in sliding slot and along its length direction activity, magnetic attraction type bit holder and movable seat are integrated structure, locating hole is equipped on movable seat, fixed frame outer wall is equipped with elastic pin assembly, the pin head of elastic pin assembly can selectively be clamped into locating hole, the electric wrench with conversion function provided by the utility model has the following outstanding advantages: adjustable length, wide adaptability;Stable structure, high torque transmission efficiency;Convenient operation, especially suitable for narrow space;Strong durability.

Description

Technical Field

[0001] This utility model relates to the field of electric wrench technology, and in particular to an electric wrench with a conversion function. Background Technology

[0002] Electric wrenches, especially impact wrenches, are widely used in automotive repair, construction engineering, and heavy equipment assembly as efficient, high-torque loading and unloading tools. They are driven by an output shaft to tighten or loosen bolts and nuts.

[0003] In practice, situations often arise where an extended working radius is required, such as when removing bolts located deep within a vehicle chassis, inside an engine compartment, or in confined spaces within large equipment. In these cases, the operator needs to attach an extension bar, or extension arm, to the output head of the electric wrench. Existing wrench extension bars primarily come in two forms: fixed-length extension bars and universal joint extension bars. However, with fixed-length extension rods, the length is fixed. When the bolt needs to be reached deep, an excessively long extension rod may not be able to reach it due to the narrow opening in the working space. When there are obstacles outside the bolt location, an excessively short extension rod cannot reach it. Therefore, the operator must prepare a whole set of extension rods of different lengths for replacement, which increases tool costs and carrying weight, and also seriously affects work efficiency during frequent replacements. On the other hand, the universal joint type extension rod cannot withstand the huge impact torque of the electric wrench, is prone to damage, and will produce large angular deflection and elastic deformation when transmitting torque, resulting in serious torque loss, making it impossible to guarantee the accuracy of bolt tightening, and the operation feel is poor. Utility Model Content

[0004] The purpose of this invention is to provide an electric wrench with a conversion function to solve the above-mentioned problems.

[0005] The technical solution of this utility model is implemented as follows: This utility model provides an electric wrench with a conversion function, including an electric wrench and a converter. The converter includes an input connector and an output connector. The converter is installed on the electric wrench through the input connector and the input connector is fixedly connected to the output connector. The output connector includes a fixed frame, a slide, a movable seat, and a magnetic bit holder. The slide and the fixed frame are an integral structure. A positioning block is provided on the outer side of the movable seat. The positioning block is embedded in the slide and moves along its length. The magnetic bit holder and the movable seat are an integral structure. The movable seat is provided with a positioning hole. An elastic pin assembly is provided on the outer wall of the fixed frame. The pin of the elastic pin assembly can selectively engage with the positioning hole.

[0006] In the above technical solution, when the working length needs to be adjusted, the operator only needs to pull the pin of the elastic pin assembly outward with their finger, causing the pin head to disengage from the current positioning hole on the movable seat, thus releasing the lock. Then, the movable seat is pushed axially, causing it to slide in the groove of the fixed frame through the positioning block, thereby causing the magnetic bit holder at the front end to extend or retract. When the desired length is achieved and a positioning hole is aligned with the elastic pin assembly, the pin is released, and the spring force will push the pin head to automatically engage in the positioning hole, completing the locking.

[0007] In one embodiment, the positioning holes are provided in multiple and arranged axially on both sides of the movable seat. In this technical solution, the length of the output end is multi-level adjustable through the cooperation of the positioning holes and the elastic pin assembly to adapt to different working depth requirements.

[0008] In one embodiment, the elastic pin assembly is a reinforced spring pin, including a pin body and a spring. Pulling the pin body can cause the pin body to retract from the positioning hole and unlock. Furthermore, the pin body has a T-shaped structure and can be connected to a detachable pull rod or rope for remote unlocking in narrow spaces where direct operation is difficult.

[0009] In one embodiment, the cross-sections of the movable seat and the fixed frame are non-circular and designed to cooperate with each other to prevent relative rotation. This design effectively prevents relative rotation during torque transmission, ensuring stable torque transmission and avoiding energy loss. Specifically, the movable seat moves linearly by embedding a positioning block on its outer wall into a groove in the fixed frame. This mating structure serves both guiding and anti-rotation functions.

[0010] In one embodiment, the input connector is used for a quick-change square hole for connection with the square head drive shaft of an electric wrench. This technical solution enables quick installation and removal of the converter and the electric wrench.

[0011] In one embodiment, the magnetic bit holder is a magnetic bit holder for holding standard hexagonal bits. This technical solution facilitates quick bit replacement and improves work efficiency.

[0012] In one embodiment, the converter is made of high-strength alloy steel, which ensures that it can withstand the high impact torque generated by the electric wrench and has high strength and long service life.

[0013] Compared with the prior art, the electric wrench with conversion function provided by this utility model has the following significant advantages: 1. Adjustable length and wide adaptability: The effective working length of the tool can be flexibly adjusted through the sliding movable seat and the elastic pin locking mechanism, which can easily cope with working spaces of different depths and avoid the trouble of carrying and replacing multiple fixed length extension rods. 2. Sturdy structure and high torque transmission efficiency: The non-circular cross-section fit and integrated frame design ensure the rigidity of the transmission path, effectively prevent torsion and deformation, minimize torque loss, and ensure the accuracy of tightening operation. 3. Easy to operate, especially suitable for narrow spaces: The flexible pin component is reasonably designed with low unlocking force. In particular, the expandable remote unlocking function makes it possible to adjust the length in spaces with poor visibility and difficulty in direct hand operation, such as deep in the chassis. 4. High durability: Made of high-strength alloy steel, key components are integrally molded, which can withstand repeated impacts from impact wrenches and has a long service life; 5. Good versatility: It adopts a standard quick-change interface and bit holder, which is highly compatible with common electric wrenches and bit accessories on the market. Attached Figure Description

[0014] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification.

[0015] Figure 1 A structural schematic diagram of the electric wrench according to an embodiment of this utility model is shown; Figure 2 A structural schematic diagram of the electric wrench according to an embodiment of this utility model is shown; Figure 3 A schematic diagram of the converter according to an embodiment of this utility model is shown; Figure 4 A schematic diagram of the converter according to an embodiment of this utility model is shown; Figure 5 A cross-sectional structural schematic diagram of the converter according to an embodiment of the present invention is shown; Figure 6 A cross-sectional structural schematic diagram of the output connector according to an embodiment of the present invention is shown; Reference numerals: Electric wrench-1, Converter-2, Input connector-21, Output connector-22, Fixed frame-221, Slide-222, Movable seat-223, Magnetic bit holder-224, Positioning hole-225, Positioning block-226, Flexible pin assembly-227. Detailed Implementation

[0016] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0017] It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0019] It should be noted that the terms "a" and "several" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0020] The names of the messages or information exchanged between the multiple devices in this embodiment of the invention are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0021] Reference Figures 1-6 An electric wrench with a conversion function includes an electric wrench 1 and a converter 2. The converter 2 includes an input connector 21 and an output connector 22. The converter 2 is mounted on the electric wrench 1 through the input connector 21, and the input connector 21 is fixedly connected to the output connector 22. The output connector 22 includes a fixed frame 221, a slide 222, a movable seat 223, and a magnetic bit holder 224. The slide 222 and the fixed frame 221 are an integral structure. The movable seat 223 is provided with a positioning block 226 on its outer side. The positioning block 226 is embedded in the slide 222 and moves along its length. The magnetic bit holder 224 and the movable seat 223 are an integral structure. The movable seat 223 is provided with a positioning hole 225. The outer wall of the fixed frame 221 is provided with an elastic pin assembly 227. The pin of the elastic pin assembly 227 can selectively engage with the positioning hole 225.

[0022] When the working length needs to be adjusted, the operator simply pulls the pin of the elastic pin assembly 227 outward with a finger, causing the pin head to disengage from the current positioning hole 225 on the movable seat 223, thus releasing the lock. Then, the movable seat 223 is pushed axially, causing it to slide through the positioning block 226 in the groove 222 of the fixed frame 221, thereby extending or retracting the magnetic bit holder 224 at the front end. When the desired length is achieved and a positioning hole 225 is aligned with the elastic pin assembly 227, releasing the pin causes the spring force to automatically engage the pin head in the positioning hole, completing the locking process.

[0023] In one embodiment, the positioning holes 225 are provided in multiple and arranged axially on both sides of the movable seat 223. In this technical solution, the length of the output end is multi-level adjustable through the cooperation of the positioning holes 225 and the elastic pin assembly 227 to adapt to different working depth requirements.

[0024] In one embodiment, the elastic pin assembly 227 is a reinforced spring pin, including a pin body and a spring. Pulling the pin body can cause the pin body to retract from the positioning hole 225 and unlock it. Furthermore, the pin body has a T-shaped structure and can be connected to a separate pull rod or rope for remote unlocking in narrow spaces where direct operation is difficult.

[0025] In one embodiment, the cross-sections of the movable seat 223 and the fixed frame 221 are non-circular and designed to cooperate with each other to prevent relative rotation. This design effectively prevents relative rotation during torque transmission, ensuring stable torque transmission and avoiding energy loss. Specifically, the movable seat 223 moves linearly by embedding its outer wall positioning block 226 into the groove 222 of the fixed frame 221. This mating structure serves both guiding and anti-rotation functions.

[0026] In one embodiment, the input connector 21 is used for a quick-change square hole for connection with the square head drive shaft of the electric wrench. In this technical solution, the converter 2 and the electric wrench 1 can be quickly installed and disassembled.

[0027] In one embodiment, the magnetic bit holder 224 is a magnetic bit holder 224 used to hold standard hexagonal bits. This technical solution facilitates quick bit replacement and improves work efficiency.

[0028] In one embodiment, the converter 2 is made of high-strength alloy steel. This technical solution ensures that it can withstand the high impact torque generated by the electric wrench and has high strength and long service life.

[0029] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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.

[0030] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. An electric power wrench with a conversion function, comprising an electric power wrench (1), a converter (2), characterized in that: The converter (2) includes an input connector (21) and an output connector (22). The converter (2) is mounted on the electric wrench (1) via the input connector (21), and the input connector (21) is fixedly connected to the output connector (22). The output connector (22) includes a fixed frame (221), a slide (222), a movable seat (223), and a magnetic bit holder (224). The slide (222) and the fixed frame (221) are an integrated structure. The movable seat (223) has a positioning block (226) on its outer side. The positioning block (226) is embedded in the slide (222) and moves along its length. The magnetic bit holder (224) and the movable seat (223) are an integrated structure. The movable seat (223) has a positioning hole (225). The outer wall of the fixed frame (221) has an elastic pin assembly (227). The pin of the elastic pin assembly (227) can selectively engage with the positioning hole (225).

2. The electric power wrench with a conversion function according to claim 1, characterized in that: The positioning holes (225) are provided in multiple and arranged axially on both sides of the movable seat (223).

3. The electric power wrench with a conversion function according to claim 2, characterized in that: The elastic pin assembly (227) is a reinforced spring pin, including a pin body and a spring. Pulling the pin body can cause the pin body to exit from the positioning hole (225) and unlock it.

4. The electric power wrench with a conversion function according to claim 3, characterized in that: The pin has a T-shaped structure and can be connected to a separate pull rod or rope for remote unlocking in narrow spaces where direct operation is difficult.

5. The electric wrench with conversion function according to claim 1, characterized in that: The cross-sections of the movable seat (223) and the fixed frame (221) are non-circular and fit together to prevent them from rotating relative to each other.

6. The electric power wrench with a conversion function according to claim 5, characterized in that: The movable seat (223) is moved by the positioning block (226) provided on its outer wall being embedded in the groove (222) of the fixed frame (221).

7. The electric power wrench with a conversion function according to claim 1, characterized in that: The input connector (21) is a quick-change square hole for connecting to the square head drive shaft of an electric wrench.

8. The electric power wrench with a conversion function according to claim 1, characterized in that: The magnetic bit holder (224) is a magnetic bit holder (224) used to hold standard hexagonal bits.

9. The electric power wrench with a conversion function according to claim 1, characterized in that: The converter (2) is a converter (2) made of high-strength alloy steel.

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