A car wrench with quick-adjustable opening size

Abstract

This utility model relates to the field of manual hardware tools, and in particular to a car wrench with a quickly adjustable opening size. It includes a wrench body, a handle with teeth, and a movably fitted wrench jaw. A worm gear, cooperating with the teeth, is mounted on the wrench jaw via pins. A U-shaped groove is provided in the center of the wrench jaw, and the worm gear is located within the U-shaped groove. Pins at both ends of the worm gear are movably inserted into pin grooves on the side walls of the U-shaped groove. Springs cooperating with the pins are located within the pin grooves, and spring plugs are provided on the outside of the springs. This design increases the quick adjustment method for the wrench's opening size, making operation convenient and enabling rapid adjustment of the car wrench's opening size, thus improving work efficiency. After releasing the worm gear, the pins at both ends of the worm gear can be reset under the action of the springs and re-engage with the teeth on the wrench body. Rotating the worm gear allows for fine adjustment and locking of the opening size. It is suitable for the rapid installation and removal of bolts / nuts in various working environments.

Description

Technical fields:

[0001] This utility model relates to the field of manual hardware tools, and in particular to an automotive wrench with a quickly adjustable opening. Background technology:

[0002] Traditional automotive wrenches primarily consist of a wrench body. The head of the wrench body is positioned at a 90-degree angle to the handle. The handle has teeth, and a wrench jaw is movably fitted onto the handle. A worm gear is mounted on the wrench jaw via a pin, meshing with the teeth. During use, rotating the worm gear moves the wrench jaw along the handle, adjusting the opening to clamp and tighten the workpiece. This method of adjusting the opening by rotating the worm gear only allows for step-by-step adjustment along the teeth, resulting in slow adjustment speeds and hindering rapid adjustments to the opening as needed, thus impacting work efficiency. Currently, there is no good solution to this problem.

[0003] In summary, how to quickly adjust the opening of an automotive wrench has become a pressing technical challenge that needs to be addressed in the industry. Utility Model Content:

[0004] To overcome the shortcomings of the prior art, this utility model provides a car wrench with a rapidly adjustable opening size, solving the problems of slow speed and low efficiency of previous car wrenches that could only adjust the opening size step by step along the teeth of the wrench body.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A car wrench with a quick-adjustable opening size includes a wrench body, a handle with wrench teeth, a wrench jaw movably fitted on the handle, a worm gear that mates with the wrench teeth being mounted on the wrench jaw via pins, a U-shaped groove in the middle of the wrench jaw, the worm gear being disposed in the U-shaped groove, pins at both ends of the worm gear being movably inserted into pin grooves on both sides of the U-shaped groove, a spring that mates with the pin being disposed in the pin groove, and a spring plug being disposed on the outside of the spring.

[0007] The bottom of the pin groove is a semi-circular pin limiting hole.

[0008] A spring hole is provided on one side of the pin groove, and the spring is located inside the spring hole. The pin groove is connected to the spring hole.

[0009] The outer diameter of the spring is larger than the width of the pin groove.

[0010] The outer side of the spring hole is a threaded hole, and the spring plug is connected to the threaded hole by a thread.

[0011] The inner side of the spring abuts against the pin, and the outer side of the spring abuts against the spring plug.

[0012] The inside of the wrench is provided with a rectangular through hole that matches the shape of the handle of the wrench body.

[0013] The handle of the lever has a round hole at its tail.

[0014] The present invention adopts the above solution and has the following beneficial effects:

[0015] By creating pin grooves on both sides of the U-shaped groove, applying force to the worm gear allows the pins to move within the pin grooves, disengaging the worm gear from the wrench body teeth. This enables the wrench jaws to move quickly on the handle, increasing the quick adjustment method for wrench jaws. This convenient operation allows for rapid adjustment of the wrench jaws, improving work efficiency. After releasing the worm gear, the pins at both ends can be reset by springs and re-engage with the wrench body teeth. Rotating the worm gear at this point allows for fine-tuning and locking of the jaws, making it suitable for the rapid installation and removal of bolts / nuts in various working environments. Attached image description:

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the rapid adjustment state after the worm gear of this utility model is disengaged from the toothed part of the plate.

[0018] Figure 3 This is a schematic diagram of the structure of the flap body of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the flange of this utility model.

[0020] In the figure, 1. Wrench body, 2. Wrench body tooth position, 3. Wrench mouth, 4. Pin, 5. Worm, 6. U-groove, 7. Pin groove, 8. Spring, 9. Spring plug, 10. Pin limiting hole, 11. Spring hole, 12. Threaded hole, 13. Rectangular through hole, 14. Round hole. Detailed implementation method:

[0021] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0022] like Figure 1-4As shown, a car wrench with a quickly adjustable opening size includes a wrench body 1. The handle of the wrench body 1 is provided with a wrench body tooth position 2. A wrench mouth 3 is movably sleeved on the handle of the wrench body 1. A worm gear 5 that cooperates with the wrench body tooth position 2 is installed on the wrench mouth 3 through a pin 4. A U-shaped groove 6 is provided in the middle of the wrench mouth 3. The worm gear 5 is located in the U-shaped groove 6. The pins 4 at both ends of the worm gear 5 are movably inserted into the pin slide grooves 7 on both sides of the U-shaped groove 6. A spring 8 that cooperates with the pin 4 is provided in the pin slide groove 7. A spring plug 9 is provided on the outside of the spring 8.

[0023] The bottom of the pin groove 7 is a semi-circular pin limiting hole 10. When the spring 8 pushes the pin 4 against the pin limiting hole 10, there is a certain gap between the tooth tip of the worm 6 and the tooth root of the tooth position 2 of the wrench body. In this way, there is no resistance when rotating the worm 5 to adjust the opening amount.

[0024] A spring hole 11 is provided on one side of the pin groove 7, and the spring 8 is located in the spring hole 11. The pin groove 7 is connected to the spring hole 11.

[0025] The outer diameter of the spring 8 is larger than the width of the pin groove 7, which can prevent the spring 8 from coming out of the pin groove 7.

[0026] The outer side of the spring hole 11 is a threaded hole 12. The spring plug 9 is threadedly connected to the threaded hole 12. The spring plug 9 can seal the spring 8 on one hand, and on the other hand, by turning the spring plug 9, the compression degree of the spring 8 can be adjusted, thereby adjusting the elastic force of the spring 8 on the pin 4.

[0027] The inner side of the spring 8 abuts against the pin 4, and the outer side of the spring 8 abuts against the spring plug 9, thus providing elastic compression between the two.

[0028] The inside of the wrench 3 is provided with a rectangular through hole 13 that matches the shape of the handle of the wrench body 1, so that the handle of the wrench body 1 can pass through it and the two can move relative to each other.

[0029] The handle of the wrench body 1 has a round hole 14 at the end, which can be used to hang the wrench in a convenient position.

[0030] Working principle:

[0031] During use, first push the worm 5 outward. The worm 5 drives the pin 4 to move outward along the pin groove 7. At this time, the pin 4 compresses the spring 8 in the spring hole 11, driving the worm 5 to move outward until it is completely disengaged from the tooth position 2 of the wrench body. Then hold the worm 5 down. At this time, the wrench 3 can be quickly moved along the handle of the wrench body 1 to adjust the opening amount. When the required opening amount is reached, release the worm 5. Under the action of the spring force of the spring 8, the pin 4 drives the worm 5 to move inward along the pin groove 7. When the pin 4 moves to the position of the pin limit hole 10, it stops. At this time, the worm 5 is just engaged with the tooth position 2 of the wrench body. Rotating the worm 5 can finely adjust the opening amount, thereby realizing the clamping and screwing operation of the workpiece.

[0032] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0033] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A car wrench with quickly adjustable opening size, comprising a wrench body, a handle of the wrench body having a wrench body toothed position, a wrench jaw movably sleeved on the handle of the wrench body, and a worm gear cooperating with the wrench body toothed position being mounted on the wrench jaw via a pin, characterized in that: The center of the wrench is provided with a U-shaped groove, the worm is located in the U-shaped groove, and the pins at both ends of the worm are movably inserted into the pin slide grooves on both sides of the U-shaped groove. A spring that cooperates with the pin is provided in the pin slide groove, and a spring plug is provided on the outside of the spring.

2. The automotive wrench with adjustable opening size according to claim 1, characterized in that: The bottom of the pin groove is a semi-circular pin limiting hole.

3. The automotive wrench with adjustable opening size according to claim 1, characterized in that: A spring hole is provided on one side of the pin groove, and the spring is located inside the spring hole. The pin groove is connected to the spring hole.

4. The automotive wrench with adjustable opening size according to claim 3, characterized in that: The outer diameter of the spring is larger than the width of the pin groove.

5. A car wrench with adjustable opening size according to claim 3, characterized in that: The outer side of the spring hole is a threaded hole, and the spring plug is connected to the threaded hole by a thread.

6. A car wrench with adjustable opening size according to claim 3, characterized in that: The inner side of the spring abuts against the pin, and the outer side of the spring abuts against the spring plug.

7. A car wrench with adjustable opening size according to claim 1, characterized in that: The inside of the wrench is provided with a rectangular through hole that matches the shape of the handle of the wrench body.

8. A car wrench with adjustable opening size according to claim 1, characterized in that: The handle of the lever has a round hole at its tail.

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