A self-adjusting multi-functional wrench

Abstract

This utility model relates to a self-adjusting multi-functional wrench, belonging to the field of wrench technology. The self-adjusting multi-functional wrench includes: an electric wrench with an annular groove on its surface; and an auxiliary mechanism including a rotating ring rotatably connected inside the annular groove. A handle is fixedly connected to the surface of the rotating ring, and the axis of the handle is perpendicular to the axis of the rotating ring. A positioning component that engages with the annular groove is installed inside the handle. The auxiliary mechanism is rotatably connected to the annular groove of the electric wrench housing via the rotating ring and fixedly connected to the handle, allowing the user to hold the tool with both hands, effectively distributing the weight and reducing the load on one wrist. The perpendicularity of the handle's axis to the rotating ring's axis provides a natural grip posture, while the engagement of the positioning component with the annular groove ensures operational stability and alleviates fatigue during prolonged use.

Description

Technical Field

[0001] This utility model relates to the field of wrench technology, and in particular to a self-adjusting multi-functional wrench. Background Technology

[0002] The core feature of a self-adjusting torque electric wrench lies in its adjustable torque and automatic control function. Users can preset a target torque value, and when the bolt reaches the set value, the wrench automatically stops or releases energy through an electronic system, ensuring precise and consistent torque output.

[0003] The current mainstream design is for single-handed use, but models equipped with external batteries generally have a weight problem, and the center of gravity is biased towards the motor. This design leads to excessive wrist load during prolonged use, easily causing fatigue and affecting the continuity of operation. Utility Model Content

[0004] Based on this, it is necessary to address the issue raised above regarding the design flaws of self-adjusting torque electric wrenches, such as their heavy weight and center of gravity being biased towards the motor end, which lead to wrist fatigue during prolonged use. Therefore, a self-adjusting multi-functional wrench should be provided.

[0005] A self-adjusting multi-functional wrench, comprising: An electric wrench, wherein an annular groove is formed on the surface of the electric wrench housing; An auxiliary mechanism includes a rotating ring rotatably connected inside an annular groove. A handle is fixedly connected to the surface of the rotating ring. The axis of the handle is perpendicular to the axis of the rotating ring. A positioning component that engages with the annular groove is installed inside the handle.

[0006] In one embodiment, the electric wrench housing has a positioning groove communicating with the annular groove inside, and the bottom of the handle has a mounting cavity aligned with the positioning groove. The positioning component includes a plug rod slidably connected inside the mounting cavity, and the top of the plug rod passes through the mounting cavity and is inserted into the positioning groove.

[0007] In one embodiment, a connecting ring is fixedly connected to the surface of the insertion rod, and a spring is provided at the bottom of the connecting ring to contact the mounting cavity.

[0008] In one embodiment, the spring is always in a compressed state and is sleeved on the surface of the insert.

[0009] In one embodiment, an adjusting ball is fixedly connected to the bottom of the insertion rod, and the diameter of the adjusting ball is larger than the inner diameter of the mounting cavity.

[0010] In one embodiment, the inside of the electric wrench housing is provided with a snap-fit ​​groove communicating with the annular groove, and a positioning spring piece fixedly connected to the swivel ring is snapped into the inside of the snap-fit ​​groove.

[0011] In one embodiment, the cross-sectional shape of the snap-fit ​​groove is an isosceles triangle, and the cross-sectional shape of the positioning spring is a V-shape with its opening facing away from the snap-fit ​​groove.

[0012] In one embodiment, there are eight positioning slots and eight snap-fit ​​slots, and the eight positioning slots and eight snap-fit ​​slots are evenly distributed in a ring around the axis of the annular groove.

[0013] Beneficial effects 1. The aforementioned self-adjusting multi-functional wrench features an auxiliary mechanism that is rotatably connected to the ring groove inside the electric wrench housing and fixedly connected to the handle. This allows the user to hold the tool with both hands, effectively distributing the weight and reducing the load on one wrist. The handle's axis is perpendicular to the ring's axis, providing a natural grip posture. Simultaneously, the positioning component engages with the ring groove to ensure operational stability and alleviate fatigue during prolonged use.

[0014] 2. The positioning component allows users to adjust the grip angle by pulling down the adjusting ball to rotate the swivel within the groove, adapting to different workspaces and left- or right-handed operation. Releasing the lever causes it to insert into the positioning groove under spring action, while the positioning spring engages with the locking slot, providing a multi-angle stable lock to ensure operational accuracy and safety, further reducing fatigue. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model in a non-working state; Figure 2 This is a schematic diagram of the overall structure of this utility model in its working state; Figure 3 This is a partial cutaway schematic diagram of the overall structure of this utility model; Figure 4 for Figure 3 Schematic sectional view along the middle AA direction; Figure 5 for Figure 3 Schematic sectional view along the middle BB direction.

[0017] Figure label: 100. Electric wrench; 110. Ring groove; 120. Positioning groove; 130. Snap-fit ​​groove; 200. Auxiliary mechanism; 210. Rotary ring; 220. Handle; 221. Mounting cavity; 230. Positioning assembly; 231. Insert rod; 232. Connecting ring; 233. Spring; 234. Adjusting ball; 235. Positioning spring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] The following is combined Figure 1 - Figure 5 This invention describes a self-adjusting multi-functional wrench.

[0020] In one embodiment, a self-adjusting multi-functional wrench includes an electric wrench 100 and an auxiliary mechanism 200, wherein an annular groove 110 is formed on the surface of the housing of the electric wrench 100.

[0021] The specific model of the electric wrench 100 is RIVERLAKE CTG30. This electric wrench 100 is a handheld battery-powered torque wrench launched by the Riverlake brand. It features a 1-inch drive head, adjustable torque from 500 to 3000 Nm, a brushless motor, and a 0.96-inch LCD display. Its accuracy and repeatability are both ±3%. The wrench adopts a highly integrated design, with core components including a brushless motor, a multi-stage planetary gear transmission system, an intelligent torque control system, a replaceable 18V lithium battery pack (standard 5Ah, optional 8Ah or 12Ah), and a visual and audible prompt system. Its power system can rotate 360 ​​degrees and has a memory mechanical locking function. Reaction force does not act on the handle, improving operational safety and work efficiency.

[0022] Its working principle is based on the user preset the target torque value through the control panel. After starting, the brushless motor increases the torque through the planetary gear system and drives the output shaft. The built-in torque sensor monitors the value in real time and feeds it back to the microcomputer control system. When the actual torque reaches the preset value, the system automatically cuts off the power and stops rotating, and at the same time emits an audible and visual signal. It can also export the stored fastening data through the Type-C interface for analysis.

[0023] The operating procedure includes checking the battery and reaction arm installation before operation, setting the torque and mode after powering on; when performing tightening operations, ensure that the reaction arm is reliably supported on a solid fulcrum, start until it automatically stops and prompts a message; when loosening, switch to reverse mode and set sufficient torque, and the reaction arm must also be supported; the wrench supports data recording and export, the battery can be quickly replaced, and after operation, the power should be turned off, the tool cleaned, and the battery properly stored.

[0024] like Figure 2-5 As shown, the auxiliary mechanism 200 includes a rotating ring 210 rotatably connected inside the annular groove 110. A handle 220 is fixedly connected to the surface of the rotating ring 210. The axis of the handle 220 is perpendicular to the axis of the rotating ring 210. A positioning component 230 that engages with the annular groove 110 is installed inside the handle 220.

[0025] like Figure 4 and Figure 5 As shown, the electric wrench 100 housing has a positioning groove 120 communicating with the annular groove 110 inside. The handle 220 has a mounting cavity 221 at the bottom that is aligned with the positioning groove 120. The positioning assembly 230 includes a rod 231 slidably connected inside the mounting cavity 221. The top of the rod 231 passes through the mounting cavity 221 and is inserted into the positioning groove 120. A connecting ring 232 is fixedly connected to the surface of the rod 231. A spring 233 is provided at the bottom of the connecting ring 232 that contacts the mounting cavity 221. The spring 233 is always in a compressed state and is sleeved on the surface of the rod 231. An adjusting ball 234 is fixedly connected to the bottom of the rod 231. The diameter of the adjusting ball 234 is larger than the inner diameter of the mounting cavity 221.

[0026] The electric wrench 100 housing has a snap-fit ​​groove 130 communicating with the annular groove 110 inside. A positioning spring piece 235 fixedly connected to the rotating ring 210 is snapped into the snap-fit ​​groove 130. The cross-sectional shape of the snap-fit ​​groove 130 is an isosceles triangle, and the cross-sectional shape of the positioning spring piece 235 is a V-shape with its opening facing away from the snap-fit ​​groove 130. There are eight positioning grooves 120 and eight snap-fit ​​grooves 130. The eight positioning grooves 120 and the eight snap-fit ​​grooves 130 are all evenly distributed in a ring around the axis of the annular groove 110.

[0027] In this embodiment, the operator holds the original handle of the electric wrench 100 with one hand and naturally holds the handle 220 of the auxiliary mechanism 200 with the other. By sharing the weight of the tool with both hands, the problem of excessive wrist load when holding it with one hand is fundamentally solved. When it is necessary to adapt to different workspaces or dominant hands, pulling down the adjusting ball 234 of the positioning component 230 allows the rotating ring 210 to rotate freely within the ring groove 110, achieving 360-degree adjustment. This design not only provides excellent spatial adaptability but also perfectly meets the different usage needs of ambidextrous and left- or right-handed users. After rotating to the desired angle, releasing the adjusting ball 234 allows the insertion rod 231 to automatically insert into the new positioning groove 120 under the action of the spring 233. At the same time, the positioning spring 235 engages with the locking groove 130, ensuring reliable stability at any angle. During tightening operations, the auxiliary hand applies support force through the handle 220, forming a stable torque couple with the main hand, greatly enhancing operational stability and accuracy, and significantly improving the quality of torque output. After completing the task, the handle 220 can be rotated to fit the main body, optimizing the storage volume and making storage and carrying more convenient.

[0028] The specific steps for using this multi-functional wrench are as follows: Preparation and Handholding: The operator holds the original handle of the electric wrench 100 with one hand and naturally holds the handle 220 of the auxiliary mechanism 200 with the other hand. This step, by sharing the weight of the tool with both hands, fundamentally solves the problem of excessive wrist load caused by the "top-heavy" feeling when holding with one hand, greatly alleviating operator fatigue and laying the foundation for long-term operation.

[0029] Angle Adjustment and Flexibility: When adapting to different workspaces, the operator pulls down the adjusting ball 234 of the positioning assembly 230, causing the insert rod 231 to compress the spring 233 and disengage from the current positioning slot 120, allowing the rotating ring 210 to rotate freely within the ring groove 110. This design enables the grip 220 to be adjusted 360 degrees, providing excellent spatial adaptability and flexibility, allowing the tool to easily cope with various complex and constrained working environments.

[0030] Positioning and Locking with Stable Support: After rotating to the desired angle, releasing the adjusting ball 234 causes the spring 233 to push the insert rod 231 into the new positioning slot 120, achieving circumferential fixation. Simultaneously, the V-shaped positioning spring 235 engages with the locking slot 130, providing axial locking. This ensures that the grip 220 provides clear tactile feedback and reliable stability at any angle, offering a solid support point for subsequent operations.

[0031] Operation and torque balance: During tightening operations, the auxiliary hand applies support force through the handle 220, forming a stable torque with the main hand. This not only greatly enhances operational stability and precision, enabling more accurate bolt alignment and suppressing starting torque, but more importantly, it perfectly counteracts the gravitational torque of the wrench head, eliminating the need for the wrist to strain to lift the tool. This significantly improves operational safety and torque output quality, and further reduces fatigue.

[0032] Completion and Convenient Storage: After completing the task, the user can readjust the angle and rotate the handle 220 of the auxiliary mechanism 200 to a position that fits snugly against the wrench body. This step optimizes the tool's storage volume, making it more convenient to store and carry, reflecting the human-centered considerations of highly integrated design.

[0033] It should be noted that the electric wrench 100 mentioned above is a device with relatively mature existing technology. The specific model can be selected according to actual needs, which will not be elaborated here. At the same time, the electric wrench 100 can be powered by a detachable built-in power supply.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A self-adjusting multifunctional wrench, characterized in that, include: An electric wrench (100) has an annular groove (110) on the surface of its housing. An auxiliary mechanism (200) includes a rotating ring (210) rotatably connected inside an annular groove (110). A handle (220) is fixedly connected to the surface of the rotating ring (210). The axis of the handle (220) is perpendicular to the axis of the rotating ring (210). A positioning component (230) that engages with the annular groove (110) is installed inside the handle (220).

2. The self-adjusting multi-function wrench of claim 1, wherein, The electric wrench (100) housing has a positioning groove (120) that communicates with the annular groove (110) inside. The bottom of the handle (220) has a mounting cavity (221) that is aligned with the positioning groove (120). The positioning component (230) includes a plug rod (231) that is slidably connected inside the mounting cavity (221). The top of the plug rod (231) passes through the mounting cavity (221) and is inserted into the positioning groove (120).

3. The self-adjusting multi-function wrench of claim 2, wherein, A connecting ring (232) is fixedly connected to the surface of the insertion rod (231), and a spring (233) is provided at the bottom of the connecting ring (232) to contact the mounting cavity (221).

4. The self-adjusting multi-function wrench of claim 3, wherein, The spring (233) is always in a compressed state and is sleeved on the surface of the insert (231).

5. The self-adjusting multi-function wrench of claim 2, wherein, An adjusting ball (234) is fixedly connected to the bottom of the insertion rod (231), and the diameter of the adjusting ball (234) is larger than the inner diameter of the mounting cavity (221).

6. The self-adjusting multi-function wrench of claim 2, wherein, The electric wrench (100) housing has a snap-fit ​​groove (130) that communicates with the annular groove (110), and a positioning spring (235) that is fixedly connected to the rotating ring (210) is snapped into the snap-fit ​​groove (130).

7. The self-adjusting multi-function wrench of claim 6, wherein, The cross-sectional shape of the snap-fit ​​groove (130) is an isosceles triangle, and the cross-sectional shape of the positioning spring (235) is a V-shape with the opening facing away from the snap-fit ​​groove (130).

8. The self-adjusting multi-function wrench of claim 6, wherein, The number of positioning grooves (120) and snap-fit ​​grooves (130) is eight each, and the eight positioning grooves (120) and the eight snap-fit ​​grooves (130) are evenly distributed in a ring around the axis of the ring groove (110).

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