A star wrench convenient to adjust

Abstract

The utility model discloses a kind of plum wrenches of being convenient for adjustment, belong to plum wrench field, including wrench left main body and wrench right main body, one end of wrench left main body is fixedly connected with plum wrench head, and plum wrench head is opened with plum hole, by the adjusting mechanism of being set, rotating adjusting knob, screw rod moves under the action of nut and drives adjusting plate, so that the size of plum hole can be adapted to different specifications bolt or nut, without carrying multiple specifications wrench, reduce the burden and cost of user, avoid delaying work due to lack of suitable tool;On telescopic structure, telescopic plate is in telescopic cavity, by the cooperation of spring and chuck and adjusting clamping hole, the flexible adjustment of the overall length of wrench is realized, when long arm is needed to twist large mechanical bolt, can be lengthened to increase torque, when operating in narrow space, can be shortened to facilitate operation, greatly improve the flexibility and convenience of wrench application, so that the plum wrench reaches the purpose of being convenient for adjustment use.

Description

Technical Field

[0001] This utility model relates to the field of box wrenches, and in particular to an easily adjustable box wrench. Background Technology

[0002] A box wrench is a hand tool specifically designed for tightening bolts or nuts. Its unique design features a twelve-pointed star-shaped head (similar to the arrangement of box nut petals). This shape allows the wrench to fit snugly against the hexagonal head of the bolt or nut, providing a larger contact area and a more stable grip, effectively reducing damage or inconvenience caused by slippage during tightening. Box wrenches typically come in two types: open-end and closed-end. Open-end box wrenches are suitable for spaces with ample room, while closed-end box wrenches (also known as socket wrenches) are better suited for space-constrained or precision-requiring tightening operations. Their robust durability and ease of use make box wrenches widely used in various fields such as machinery repair, automotive maintenance, and construction.

[0003] While box wrenches are widely used in various fields, existing box wrenches still have certain design limitations. Specifically, traditional box wrenches have a fixed head size, making them unsuitable for bolts or nuts of different sizes. This means that in practice, users must carry multiple sizes of box wrenches to meet different tightening needs, depending on the bolt or nut dimensions. This not only increases the user's burden and cost but can also lead to delays in work progress due to the lack of a suitable wrench in emergency situations.

[0004] Furthermore, existing box wrenches are typically of a fixed overall length, making them unadjustable to suit specific usage scenarios. In situations requiring a longer lever arm to increase turning torque, such as tightening bolts on large machinery, a fixed wrench length may not provide sufficient torque, leading to difficulty in turning. Moreover, when operating in confined spaces, such as during repairs in a car engine compartment, an excessively long wrench may prevent easy access or operation, thus limiting its flexibility and convenience. Utility Model Content

[0005] The main purpose of this utility model is to provide an easily adjustable box wrench, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An easily adjustable box wrench includes a left wrench body and a right wrench body. One end of the left wrench body is fixedly connected to a box wrench head with a box wrench head having a box-shaped hole. One end of the right wrench body is fixedly connected to a deadbolt wrench head. The left wrench body is movably connected to the right wrench body via a telescopic plate at the other end. An adjustment mechanism is also provided in the top surface of the left wrench body. The adjustment mechanism includes an adjustment knob, a screw, and an adjustment plate. The adjustment knob is movably connected to a movable opening in the top surface of the left wrench body via a rotating rod on the side wall. The screw is fixedly connected to the side wall of the adjustment plate and movably connected to a nut inside the rotating rod.

[0007] Preferably, a telescopic cavity is provided on the other end wall of the right body of the wrench, and a first guide block is fixedly installed on the two inner side walls of the opening of the telescopic cavity. Several symmetrical adjustment holes that communicate with the telescopic cavity are also provided on both sides of the outer wall of the right body of the wrench.

[0008] Preferably, a telescopic plate is fixedly installed at the other end of the left main body of the wrench, and a first guide groove corresponding to the first guide block is opened on the two side walls of the telescopic plate.

[0009] Preferably, the telescopic plate has a side hole on its side wall, and a retaining ring is fixedly installed at both ends of the side hole. A spring is also movably installed inside the side hole and between the retaining rings, and a clip is fixedly installed at both ends of the spring. The clip passes through the retaining ring and is inserted into the adjustment clip hole.

[0010] Preferably, the top surface of the left main body of the wrench has a transverse opening that communicates with the plum blossom hole, and the top surface of the left main body of the wrench also has a movable opening located to the right of the transverse opening. A rod cavity is formed on the inner right side wall of the movable opening, and a mounting hole communicating with the transverse opening is formed on the inner left side wall of the movable opening. A bearing is fixedly installed in the mounting hole, and a second guide block is fixedly installed on each of the inner two side walls of the transverse opening.

[0011] Preferably, a rotating rod is fixedly installed on the side wall of the adjusting knob, and the rotating rod is inserted and fixedly installed together with the bearing. A through hole is opened on the end wall of the rotating rod, and a nut is fixedly installed in the through hole. A screw is fixedly installed on the right side wall of the adjusting plate, and the screw is threadedly connected to the nut. A second guide groove corresponding to the second guide block is opened on both sides of the adjusting plate, and a V-shaped groove is also opened on the left side wall of the adjusting plate.

[0012] As a preferred embodiment, the above is described.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In this invention, an adjustment mechanism is provided. By rotating the adjustment knob, the screw, under the action of the nut, drives the adjustment plate to move, allowing the size of the box wrench to be adapted to bolts or nuts of different specifications. This eliminates the need to carry multiple sizes of wrenches, reducing the burden and cost for users and preventing work delays due to a lack of suitable tools. Regarding the telescopic structure, the telescopic plate is located within the telescopic cavity. Through the cooperation of the spring, the locking head, and the adjustment locking hole, the overall length of the wrench can be flexibly adjusted. When a long lever arm is needed to tighten large mechanical bolts, it can be extended to increase torque. When working in narrow spaces, it can be shortened for easy operation, greatly improving the flexibility and convenience of wrench application. Thus, this box wrench achieves the purpose of easy adjustment and use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the right main body of the wrench of this utility model; Figure 3 This is a schematic diagram of the overall structure of the box wrench head of this utility model; Figure 4 This is a cross-sectional structural diagram of the telescopic plate of this utility model; Figure 5 This is a cross-sectional structural diagram of the adjustment mechanism of this utility model.

[0015] In the diagram: 1. Left main body of the wrench; 2. Right main body of the wrench; 3. Box wrench head; 4. Box hole; 5. Open-end wrench head; 6. Adjustment mechanism; 7. Telescopic cavity; 8. First guide block; 9. Adjustment locking hole; 10. Telescopic plate; 11. First guide groove; 12. Side hole; 13. Retaining ring; 14. Spring; 15. Locking head; 16. Horizontal opening; 17. Movable opening; 18. Rod cavity; 19. Mounting hole; 20. Bearing; 21. Second guide block; 22. Adjustment knob; 23. Rotating rod; 24. Through hole; 25. Nut; 26. Screw; 27. Adjustment plate; 28. Second guide groove; 29. ​​V-groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0017] like Figure 1 - Figure 5As shown, an easily adjustable box wrench includes a left wrench body 1 and a right wrench body 2. One end of the left wrench body 1 is fixedly connected to a box wrench head 3, and the box wrench head 3 has a box hole 4. One end of the right wrench body 2 is fixedly connected to a deadbolt wrench head 5. The left wrench body 1 is movably connected to the right wrench body 2 through a telescopic plate 10 at the other end. An adjustment mechanism 6 is also provided in the top surface of the left wrench body 1. The adjustment mechanism 6 includes an adjustment knob 22, a screw 26, and an adjustment plate 27. The adjustment knob 22 is movably connected to the movable opening 17 in the top surface of the left wrench body 1 through a rotating rod 23 on the side wall. The screw 26 is fixedly connected to the side wall of the adjustment plate 27 and movably connected to the nut 25 in the rotating rod 23.

[0018] Example 1 like Figures 2-4 As shown, a telescopic cavity 7 is provided on the other end wall of the right main body 2 of the wrench, and a first guide block 8 is fixedly installed on the two side walls inside the opening of the telescopic cavity 7. Several symmetrical adjustment holes 9 connected to the telescopic cavity 7 are also provided on both sides of the outer wall of the right main body 2 of the wrench. A telescopic plate 10 is fixedly installed on the other end of the left main body 1 of the wrench, and a first guide groove 11 corresponding to the first guide block 8 is provided on the two side walls of the telescopic plate 10. A side hole 12 is also provided on the side wall of the telescopic plate 10, and a retaining ring 13 is fixedly installed at both ends of the side hole 12. A spring 14 is also movably installed inside the side hole 12 and between the retaining rings 13. A clamp 15 is fixedly installed at both ends of the spring 14. The clamp 15 passes through the retaining ring 13 and is inserted into the adjustment hole 9. The specific principle behind the length adjustment of this box wrench is as follows: When adjusting the length of the box wrench, first apply external force to the telescopic plate 10. Hold the right body 2 of the wrench and pull the left body 1. This causes the telescopic plate 10 mounted on the left body 1 to move outward through the first guide groove 11 on both side walls, along the first guide block 8, within the telescopic cavity 7 on the right body 2. This ensures a smooth and non-deviation-prone telescopic process. During the movement of the telescopic plate 10, the structure within the side hole 12 of the side wall plays a fixing role. Since the spring 14 within the side hole 12 is connected to the two ends of the clamping head 15, and the clamping head 15 passes through the retaining ring 13, when the telescopic plate 10 extends or retracts, the clamping head 15 is subjected to compressive force, which in turn forces the spring 14 to compress or extend. The clamping head 15 moves within the side hole 12 and then leaves the current adjustment hole 9 before being released by the elasticity of the spring 14. When the extension plate 10 is pressed firmly against the inner wall of the telescopic cavity 7, and the extension plate 10 moves to the appropriate position, the spring 14 returns to its original shape, pushing the collet 15 into the corresponding adjustment holes 9 on both sides of the outer wall of the right body 2 of the wrench, thus fixing the extension plate 10 to the right body 2 of the wrench. This determines the working length of the wrench. In actual use, when encountering scenarios requiring a larger turning torque, such as disassembling bolts on large mechanical equipment, the extension plate 10 can be lengthened to increase the overall length of the wrench, forming a longer lever arm to easily apply a larger torque. In confined working environments, such as when repairing in a car engine compartment, the extension plate 10 can be shortened to make the wrench easier to operate in a small space, avoiding the problem of inconvenience or inability to operate due to the wrench being too long. This greatly improves the applicability and ease of operation of the box wrench in different working scenarios.

[0019] Example 2 like Figure 1 and Figure 5 As shown, the top surface of the left main body 1 of the wrench has a transverse opening 16 communicating with the plum blossom hole 4, and the top surface of the left main body 1 of the wrench also has a movable opening 17 located to the right of the transverse opening 16. A rod cavity 18 is formed on the inner right side wall of the movable opening 17, and a mounting hole 19 communicating with the transverse opening 16 is formed on the inner left side wall of the movable opening 17. A bearing 20 is fixedly installed in the mounting hole 19. Second guide blocks 21 are also fixedly installed on the inner two side walls of the transverse opening 16 respectively; the side wall of the adjusting knob 22 is fixed with... A rotating rod 23 is installed, and the rotating rod 23 is fixedly installed together with the bearing 20. A through hole 24 is opened on the end wall of the rotating rod 23, through the adjusting knob 22, and a nut 25 is fixedly installed in the through hole 24. A screw 26 is fixedly installed on the right side wall of the adjusting plate 27, and the screw 26 is threadedly connected to the nut 25. A second guide groove 28 corresponding to the second guide block 21 is opened on both sides of the adjusting plate 27, and a V-shaped groove 29 is also opened on the left side wall of the adjusting plate 27. The specific adjustment principle of this box wrench when used with bolts or nuts of different sizes is as follows: When using a box wrench to tighten bolts or nuts of different sizes, place the nut to be removed into the box hole 4, and then use your thumb to turn the slightly protruding adjusting knob 22 at the movable opening 17. This will cause the adjusting knob 22 to rotate continuously. The rotating rod 23 mounted on the side wall of the adjusting knob 22 will rotate within the bearing 20 installed in the mounting hole 19 on the left side wall of the movable opening 17. The rotating rod 23 will then drive the nut 25, which is installed in the through hole 24 inside the adjusting knob 22, to rotate synchronously. This is because the nut 25 is mounted on the right side wall of the adjusting plate 27 and located inside the right side wall of the movable opening 17. The screw 26 in the cavity 18 is threadedly connected to the nut 25 and passes through the through hole 24. Therefore, when the nut 25 rotates in the fixed position, it drives the screw 26 to move to the left, pushing the adjusting plate 27 through the transverse opening 16 on the top surface of the left main body 1 of the wrench. The adjusting plate 27 moves along the second guide block 21 installed in the transverse opening 16 via the second guide grooves 28 on both side walls, providing guidance and stable support for the movement of the adjusting plate 27, ensuring that the adjusting plate 27 does not deviate or shake during movement. As the adjusting plate 27 moves, the V-shaped groove on its left side wall... The position of the groove 29 within the plum blossom hole 4 changes, thereby altering the available space within the plum blossom hole 4. This allows the plum blossom hole 4 to accommodate bolts or nuts of different sizes. In actual operation, whether dealing with small bolts on small precision instruments or large nuts on large industrial equipment, simply turning the adjustment knob 22 allows for quick adjustment of the size of the plum blossom hole 4, eliminating the need for frequent changes of wrenches of different sizes. This significantly improves work efficiency. Furthermore, precise size adjustment ensures a tighter fit between the plum blossom hole 4 and the bolt or nut, providing a more stable grip during tightening, effectively reducing slippage, lowering the risk of damage to the bolt or nut surface, and ensuring work quality and tool lifespan.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An easily adjustable box wrench, comprising a left wrench body (1) and a right wrench body (2), wherein a box wrench head (3) is fixedly connected to one end of the left wrench body (1), and a box wrench head (3) is provided with a box wrench hole (4), and a deadbolt wrench head (5) is fixedly connected to one end of the right wrench body (2), characterized in that: The left body (1) of the wrench is movably connected to the right body (2) of the wrench through the telescopic plate (10) at the other end. The top surface of the left body (1) of the wrench is also provided with an adjustment mechanism (6). The adjustment mechanism (6) includes an adjustment knob (22), a screw (26) and an adjustment plate (27). The adjustment knob (22) is movably connected to the movable opening (17) on the top surface of the left body (1) of the wrench through the rotating rod (23) on the side wall. The screw (26) is fixedly connected to the side wall of the adjustment plate (27) and movably connected to the nut (25) in the rotating rod (23).

2. The easily adjustable box wrench according to claim 1, characterized in that: The other end wall of the right body (2) of the wrench is provided with a telescopic cavity (7), and the two inner walls of the telescopic cavity (7) are respectively fixedly installed with first guide blocks (8). The outer walls of the right body (2) of the wrench are also provided with a number of symmetrical adjustment holes (9) that communicate with the telescopic cavity (7).

3. The easily adjustable box wrench according to claim 2, characterized in that: The other end of the left main body (1) of the wrench is fixedly installed with a telescopic plate (10), and the two side walls of the telescopic plate (10) are respectively provided with a first guide groove (11) corresponding to the first guide block (8).

4. The easily adjustable box wrench according to claim 3, characterized in that: The telescopic plate (10) is also provided with a side hole (12), and a retaining ring (13) is fixedly installed at both ends of the side hole (12). A spring (14) is also movably installed inside the side hole (12) and between the retaining rings (13), and a clip (15) is fixedly installed at both ends of the spring (14). The clip (15) passes through the retaining ring (13) and is inserted into the adjustment clip hole (9).

5. The easily adjustable box wrench according to claim 4, characterized in that: The top surface of the left main body (1) of the wrench has a transverse opening (16) that communicates with the plum blossom hole (4), and the top surface of the left main body (1) of the wrench also has a movable opening (17) located to the right of the transverse opening (16). The inner right side wall of the movable opening (17) has a rod cavity (18), and the inner left side wall of the movable opening (17) has a mounting hole (19) that communicates with the transverse opening (16). A bearing (20) is fixedly installed in the mounting hole (19), and a second guide block (21) is fixedly installed on each of the inner two side walls of the transverse opening (16).

6. The easily adjustable box wrench according to claim 5, characterized in that: A rotating rod (23) is fixedly installed on the side wall of the adjustment knob (22), and the rotating rod (23) is inserted and fixedly installed together with the bearing (20). A through hole (24) is opened on the end wall of the rotating rod (23) through the adjustment knob (22), and a nut (25) is fixedly installed in the hole (24).

7. The easily adjustable box wrench according to claim 6, characterized in that: A screw (26) is fixedly installed on the right side wall of the adjusting plate (27), and the screw (26) is threadedly connected to the nut (25). The two side walls of the adjusting plate (27) are respectively provided with second guide grooves (28) corresponding to the second guide block (21), and a V-shaped groove (29) is also provided on the left side wall of the adjusting plate (27).

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