Detachable combined wrench

Abstract

The utility model discloses a combined wrench which comprises a handle, a middle rod, an adapter and an operating head. One end of the middle rod is connected with the handle, and the other end is connected with the operating head through the adapter; the adapter is provided with a counterbore, a first adapter groove and a second adapter groove, and the first adapter groove and the second adapter groove are located at the two ends of the adapter and communicate with each other; the counterbore is located in the side wall of the end, close to the second adapter groove, of the adapter and fixes the operation head through a screw. By replacing different types of operating heads, the combined wrench can be suitable for various different fasteners such as bolts and nuts, and the use range of the wrench is greatly expanded; due to the design of the adapter, the operation head can be replaced simply and quickly; the operation head can be firmly fixed on the adapter in the using process through the counterbore and the screw, and potential safety hazards caused by loosening of the operation head are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of wrench tools, in particular to a detachable combination wrench. Background Art

[0002] The assembly and disassembly of core components like connectors and locks present numerous challenges in the production and after-sales maintenance of customized products. These components are numerous and vary in specifications, and the assembly environment is often constrained by narrow horizontal spaces and long vertical dimensions. Traditional tools like socket wrenches and crescent wrenches, while generally sufficient for assembly, are insufficient when faced with diverse nut specifications. Their integrated design limits flexibility, resulting in a wide variety of tools and complex management.

[0003] With the acceleration of product iteration and the increasing trend of component diversification, traditional tool management methods are becoming increasingly inefficient. This not only increases time, money, and management costs, but also makes it difficult to meet the rapid response requirements of after-sales service. Furthermore, the shortcomings of traditional tools in terms of user-friendly design, such as difficult disassembly and storage, heavy weight, and limited usage scenarios, further reduce work efficiency and user experience. These problems are particularly prominent in emergency or complex working conditions. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the prior art, a detachable combination wrench is provided.

[0005] The technical solution of the utility model is as follows: a detachable combination wrench, comprising a handle, an intermediate rod, an adapter and an operating head; one end of the intermediate rod is connected to the handle, and the other end is connected to the operating head through the adapter; the adapter is provided with a countersunk hole, a first adapter groove and a second adapter groove, and the first adapter groove and the second adapter groove are located at both ends of the adapter and are connected; the countersunk hole is located on the side wall of the adapter near one end of the second adapter groove, and the countersunk hole fixes the operating head by a screw; by replacing different types of operating heads, the combination wrench can be suitable for a variety of different bolts, nuts and other fasteners, greatly expanding the scope of use of the wrench; the design of the adapter makes the replacement of the operating head simple and quick; the countersunk hole and the screw enable the operating head to be firmly fixed to the adapter during use, avoiding safety hazards caused by loosening of the operating head.

[0006] Preferably, the countersunk hole communicates with the second adapter groove. Because the countersunk hole communicates with the second adapter groove, alignment and securing of the operating head during installation may be easier. A screw can be inserted from one side of the second adapter groove, passed through the countersunk hole, and ultimately secured to the operating head, reducing installation complexity.

[0007] Preferably, the intermediate rod includes a rod body and a torque portion and a connecting cylinder provided at both ends of the rod body; the torque portion is connected to the handle, and the connecting cylinder is threadedly connected to the first adapter groove. The torque portion of the intermediate rod is designed specifically for connection with the handle. This design optimizes the torque transmission path, reduces energy loss, and enables the rotational force applied by the user through the handle to be more effectively transmitted to the operating head, thereby enhancing the overall working efficiency of the wrench. The threaded connection between the connecting cylinder and the first adapter groove ensures a stable connection between the intermediate rod and the adapter. This connection method not only reduces the risk of loosening or falling off, but also improves the structural strength and durability of the entire wrench system, making the wrench more reliable during use.

[0008] Preferably, a torque groove is provided in the center of the handle, which engages with the torque portion. The interlocking design of the torque groove and the torque portion ensures a tight connection between the handle and the intermediate rod. This interlocking structure prevents loosening or falling off due to external forces during use, thereby improving the stability and safety of the entire tool system.

[0009] Preferably, the torque portion is a square prism structure, and the torque groove is a square that matches the torque portion. Compared to circular or other asymmetrical shapes, the square prism structure is less susceptible to relative rotation when subjected to rotational forces. Therefore, this design significantly improves the anti-rotational capacity between the handle and the intermediate rod, ensuring stability and reliability during use.

[0010] Preferably, the handle also includes a mounting hole that intersects the torque groove; a screw passes through the mounting hole to secure the torque unit. By providing a mounting hole in the handle that intersects the torque groove and using the screw to secure the torque unit to the handle, the strength of the connection between the two is enhanced. The tightening action of the screw makes it more difficult for the torque unit to loosen or fall off when subjected to rotational force, thereby ensuring the stability and reliability of the tool.

[0011] Preferably, one end of the operating head is provided with an operating end that mates with the slotted nut; the other end is provided with a mounting portion that engages with the second adapter slot. Because the mounting portion and the second adapter slot are relatively simple and straightforward to mate, users can easily replace or install the operating head. This convenient replacement and installation method improves work efficiency and reduces maintenance costs.

[0012] Preferably, the mounting portion is provided with a fixing slot that connects to a screw inserted through a countersunk hole. Because the screw head fits into the fixing slot and tightly bonds with the surrounding material, this connection provides a high degree of stability, capable of withstanding significant tensile and shear forces. The countersunk hole design ensures that the screw head does not protrude from the surface of the connected component after installation, maintaining a smooth and aesthetically pleasing surface.

[0013] Preferably, both ends of the handle are rounded structures, ensuring that the user can hold it stably and comfortably when in use, thereby improving the user's grip comfort.

[0014] Preferably, the shaft is a hollow structure, which reduces the weight of the shaft and is easy to carry.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] A detachable combination wrench achieves high modularity and interchangeability through the combined design of a handle, intermediate rod, adapter, and operating head. Users can choose different operating heads to accommodate different sizes and types of slotted nuts, improving the tool's flexibility and applicability.

[0017] Furthermore, the design features a stable connection structure. The torque portion of the intermediate rod engages with the torque groove of the handle and is secured with screws, ensuring a secure connection between the two and preventing loosening or falling off during use. The adapter engages with the connecting cylinder of the intermediate rod via the first adapter groove, while the operating head engages with the second adapter groove of the adapter via the mounting and fixing portion and is further secured with countersunk holes and screws, forming a stable connection system that improves the rigidity and stability of the overall structure.

[0018] Furthermore, the middle rod is hollow, which effectively reduces the overall weight of the wrench, making it easier and more convenient to operate, while reducing fatigue during long-term use. The entire device is small and easy to carry.

[0019] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the installation of a detachable combination wrench of the utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of a detachable combination wrench of the present utility model;

[0023] Figure 3 This is a schematic structural diagram of the adapter of the present utility model;

[0024] Figure 4 This is a schematic structural diagram of the intermediate rod of the present utility model;

[0025] Figure 5 This is a structural diagram of the operating head of the utility model;

[0026] Figure 6 This is a schematic structural diagram of the handle of the present utility model;

[0027] The following are the descriptions of the reference numerals:

[0028] Handle 1, intermediate rod 2, adapter 3, operating head 4, countersunk hole 31, first adapter groove 32, second adapter groove 33, rod body 21, torque part 22, connecting cylinder 23, torque groove 11, mounting hole 12, operating end 41, mounting fixing part 42. DETAILED DESCRIPTION

[0029] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0030] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0031] like Figures 1 to 6 As shown, a detachable combination wrench includes a handle 1, an intermediate rod 2, an adapter 3, and an operating head 4. One end of the intermediate rod 2 is connected to the handle 1, and the other end is connected to the operating head 4 via the adapter 3. The handle 1 serves as the grip of the entire wrench, and the handle 1 has rounded corners at both ends, ensuring a stable and comfortable grip for the user during use, thereby improving the user's grip comfort. The intermediate rod is a key component connecting the handle and the operating head, and plays a role in transmitting force. The adapter 3 is located between the intermediate rod 2 and the operating head 4 and is the core component for achieving functional conversion. The adapter 3 makes replacing the operating head 4 simple and quick, eliminating the need for users to carry multiple different types of wrenches. Only one combination wrench can meet various needs.

[0032] Among them, the adapter 3 is provided with a countersunk hole 31, a first adapter groove 32 and a second adapter groove 33. The first adapter groove 32 and the second adapter groove 33 are located at both ends of the adapter 3 and are connected; the countersunk hole 31 is located on the side wall of the adapter 3 close to one end of the second adapter groove 33, and the countersunk hole 31 is fixed to the operating head 4 by screws.

[0033] Furthermore, the countersunk hole 31 is connected to the second adapter groove 33, forming a more stable structural support. This helps to disperse the stress generated by the operating head 4 when subjected to force, thereby enhancing the overall strength and durability of the adapter 3. The screw can be inserted from one side of the second adapter groove 33, pass through the countersunk hole 31, and finally fix the operating head 4, reducing the complexity of installation. The internal space of the adapter is effectively utilized, avoiding unnecessary waste of materials. At the same time, the connected design makes the combination wrench more compact as a whole, easy to carry and store.

[0034] The intermediate rod 2 includes a shaft 21 and a torque portion 22 and a connecting cylinder 23 provided at both ends of the shaft 21; the torque portion 22 is connected to the handle 1, and the connecting cylinder 23 is threadedly connected to the first adapter groove 32. The connecting cylinder 23 is provided with an external thread, and the first adapter groove 32 is provided with an internal thread. The connecting cylinder 23 and the first adapter groove 32 are threadedly connected. The torque portion is mainly used to connect with the handle 1; it is used to transmit or withstand torque. When the handle is rotated, the torque portion 22 will effectively transmit this rotational force to the shaft 21, and is fixedly connected to the operating head 4 through the connecting cylinder 23, thereby driving the operating head 4 to rotate, ensuring a stable connection between the intermediate rod 2 and other components, and enhancing the overall working efficiency of the wrench. Among them, the shaft 21 is a hollow structure, which reduces the weight of the shaft and is convenient for users to carry.

[0035] A torque groove 11 is provided in the center of the handle 1, which engages with the torque portion 22. This ensures a tight connection between the handle 1 and the intermediate rod 2, preventing loosening or falling off due to external forces during use. The torque portion 22 is a square prism structure; the torque groove 11 is a square shape that matches the torque portion 22, ensuring precise positioning between the torque portion and the torque groove. The square prism structure is more difficult to rotate relative to each other when subjected to rotational forces. Therefore, this design significantly improves the anti-rotation ability between the handle and the intermediate rod, ensuring stability and reliability during use. In this embodiment, the torque portion 22 can also be configured as a hexagonal prism structure, which has the same effect as the square prism.

[0036] The handle 1 is also provided with a mounting hole 12 that is in communication with the torque slot 11; a screw passes through the mounting hole 12 to secure the torque portion 22; by providing a mounting hole 12 in communication with the torque slot 11 on the handle 1 and using screws to tightly secure the torque portion 22 to the handle 1, the strength of the connection between the two is improved. The tightening action of the screw makes it more difficult for the torque portion 22 to loosen or fall off when subjected to rotational force, thereby ensuring the stability and reliability of the tool. When the intermediate rod 2 needs to be repaired or replaced, this design makes the disassembly and installation process simpler and faster. The user only needs to loosen the screw to separate the torque portion 22 from the handle 1, and then perform the necessary repair or replacement work. Once completed, tighten the screw again to restore the connection without the need for complicated tools or operations.

[0037] One end of the operating head 4 is provided with an operating end 41 that matches the slotted nut; the other end is provided with a mounting and fixing portion 42 that engages with the second adapter groove 33, providing a stable connection method. This allows the operating head 4 to be firmly mounted on the wrench, reducing performance degradation or safety hazards caused by loosening. The operating head 4 is provided in a variety of models, allowing the tool to be applicable to a wider variety of fasteners and work scenarios. Users can choose the appropriate operating head according to specific needs, thereby achieving precise and efficient operations. The mounting and fixing portions 42 provided on various models of operating heads 4 are all engaged with the second adapter groove 33. Users can easily replace different models of operating heads 4 in a short time. This rapid replacement capability improves work efficiency and reduces the time of interruption of operations due to replacement of the operating head 4.

[0038] The mounting portion 42 is provided with a fixing groove 421, which connects to a screw that passes through the countersunk hole 31. The screw passes through the countersunk hole 31, its head embedded in the fixing groove 421, and is connected to the other component through a threaded connection to achieve a fastening effect. The fixing groove 421 facilitates the installation and fixation of the screw, making the installation operation easier for the user.

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A detachable combination wrench, characterized in that: The utility model comprises a handle (1), an intermediate rod (2), an adapter (3) and an operating head (4); one end of the intermediate rod (2) is connected to the handle (1), and the other end is connected to the operating head (4) through the adapter (3); the adapter (3) is provided with a countersunk hole (31), a first adapter groove (32) and a second adapter groove (33); the first adapter groove (32) and the second adapter groove (33) are located at two ends of the adapter (3) and are connected; the countersunk hole (31) is located on the side wall of the adapter (3) close to one end of the second adapter groove (33); the countersunk hole (31) is fixed to the operating head (4) by a screw.

2. The detachable combination wrench according to claim 1, characterized in that: The countersunk hole (31) is communicated with the second adapter groove (33).

3. The detachable combination wrench according to claim 1, characterized in that: The intermediate rod (2) comprises a rod body (21), a torque portion (22) and a connecting cylinder (23) provided at both ends of the rod body (21); the torque portion (22) is connected to the handle (1), and the connecting cylinder (23) is threadedly connected to the first adapter groove (32).

4. The detachable combination wrench according to claim 1, characterized in that: A torque groove (11) is provided in the middle of the handle (1) and is engaged with the torque portion (22).

5. The detachable combination wrench according to claim 3, characterized in that: The torque portion (22) is a square column structure; the torque groove (11) is a square that matches the torque portion (22).

6. The detachable combination wrench according to claim 4, characterized in that: The handle (1) is also provided with a mounting hole (12) that is in communication with the torque groove (11); a screw passes through the mounting hole (12) and is fixed to the torque portion (22).

7. The detachable combination wrench according to claim 1, characterized in that: One end of the operating head (4) is provided with an operating end (41) matching the slotted nut; the other end is provided with a mounting fixing portion (42) engaged with the second adapter groove (33).

8. The detachable combination wrench according to claim 7, characterized in that: The mounting fixing portion (42) is provided with a fixing groove (421), and the fixing groove (421) is connected to a screw passing through the countersunk hole (31).

9. The detachable combination wrench according to claim 1, characterized in that: Both ends of the handle (1) are rounded structures.

10. The detachable combination wrench according to claim 3, characterized in that: The shaft (21) is a hollow structure.

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