Spanner with easily replaceable head

Abstract

The utility model relates to the field of wrench, disclose a kind of wrench of the wrench head convenient to replace, including handle, respectively located the open-end wrench head and plum wrench head in the left and right sides of handle, open-end wrench head and plum wrench head are connected with handle by connecting assembly, and expansion assembly is equipped on handle, plug block is inserted into slot A and handle contact connection, connecting assembly includes square column, spring, plug rod A, plug rod B is fixedly arranged below plug rod A, spring is located in slot D and is connected with plug rod A and touches, and square column is far from the side wall of open-end wrench head and plum wrench head and is equipped with insertion hole, plug rod A is inserted into insertion hole and is connected with square column and touches. The utility model has the beneficial effect that the wrench head is convenient to replace, solves the problem that the existing wrench cannot replace the wrench head according to the nut type and size, in order to disassemble and assemble different types and sizes of nut, operators usually carry multiple wrenches to work, the wrench is heavy, leading to the problem of inconvenience.

Description

Technical Field

[0001] This utility model relates to the field of wrench technology, specifically to a wrench with a convenient wrench head replacement mechanism. Background Technology

[0002] A wrench, also known as a wrench, is a long-established and widely used hand tool. Its main function is to tighten or loosen bolts, nuts, and other angular parts by applying torque. As an indispensable basic tool in mechanical maintenance, repair, and assembly, the wrench plays a vital role in various fields such as industrial manufacturing, engineering construction, and household use.

[0003] The wrench head and handle of existing wrenches are usually fixed as one piece and cannot be disassembled. Therefore, existing wrenches cannot be changed according to the type and size of nuts during use. In order to install and remove different types and sizes of nuts, operators usually carry multiple wrenches, which causes inconvenience due to their weight. Utility Model Content

[0004] The purpose of this invention is to provide a wrench with a convenient wrench head replacement method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wrench for easy replacement of wrench heads, comprising a handle, an open-end wrench head and a box wrench head located on the left and right sides of the handle respectively, wherein both the open-end wrench head and the box wrench head are connected to the handle via a connecting assembly, the handle is provided with an extension assembly, and each of the open-end wrench head and the box wrench head has a fixed insert block near the handle side, and slots A are provided on both the left and right side walls of the handle, the insert block is inserted into slot A and contacts the handle, the connecting assembly includes a square post, a spring, a insert rod A, and a insert rod B fixedly disposed below the insert rod A. The handle has a slot B that connects to slot A through its vertical opening. The insert has a slot C that connects to slot B through its vertical opening. The square post is inserted into slots B and C and is in contact with the handle and the insert. Slot D is located on the side wall of slot B away from the open-end wrench head and box wrench head. Slot E, which communicates with slot D, is located on the bottom wall of the handle. Insert rod A and insert rod B are located in slots D and E, respectively. The spring is located in slot D and is in contact with insert rod A. The square post has a insertion hole on the side wall away from the open-end wrench head and box wrench head. Insert rod A is inserted into the insertion hole and is in contact with the square post.

[0006] Preferably, the connecting assembly further includes magnet A fixedly disposed on the left and right sides of the handle and magnet B fixedly disposed below the handle. The square post, open-end wrench head and box wrench head are all made of carbon steel. After the insert block is inserted into slot A, the open-end wrench head and box wrench head are magnetically connected to magnet A. After the square post is inserted into slots B and C, the bottom end of the square post is magnetically connected to magnet B.

[0007] Preferably, guide bars are fixedly provided on both the front and rear side walls of the slot, and guide grooves are provided on both the front and rear side walls of the insert block, with the guide bars inserted into the guide grooves and in contact with the handle.

[0008] Preferably, the bottom end of the insertion rod B extends out of the slot E below the handle, and a round head is fixedly installed above the square post above the handle, with anti-slip texture provided on the outer wall of the round head.

[0009] Preferably, the extension assembly includes an internal hex wrench A, several screws, and a push plate. The top wall of the handle has an L-shaped groove A that matches the internal hex wrench A. The internal hex wrench A is inserted into the L-shaped groove A and contacts the handle. The front side wall of the handle has a screw hole A that communicates with the L-shaped groove A. The push plate is located in the L-shaped groove A and is slidably connected to the handle. After the screws are screwed into the screw hole A, the rear end of the screws is rotatably connected to the push plate.

[0010] Preferably, the extension component further includes an internal hex wrench B, the size of which is larger than that of the internal hex wrench A, and an L-shaped groove B matching the internal hex wrench B is provided on the top wall of the handle, and a screw hole B communicating with the L-shaped groove B is provided on the front side wall of the handle.

[0011] Preferably, a butterfly head is fixedly provided at the front end of the screw.

[0012] The beneficial effects of this utility model are as follows: When it is necessary to replace the open-end wrench head and the box wrench head, pull the insert rod B to retract the insert rod A into the slot D and separate it from the square post. Pull out the square post to separate it from the handle and the insert block, and the open-end wrench head and the box wrench head can be removed. The above disassembly and assembly process does not require the use of tools and can be completed by hand, which facilitates the disassembly and assembly of wrench heads. Other sizes of open-end wrench heads and box wrench heads can be assembled with the handle, which facilitates the replacement of wrench heads.

[0013] When installing a small-sized hex socket screw, insert the corresponding hex wrench A into the L-shaped slot A and connect it with the handle. Rotate the screw to move the push plate backward, clamping the hex wrench A between the push plate and the rear wall of the L-shaped slot A, thus fixing the hex wrench A to the handle. At this time, the handle becomes an extended lever arm of the hex wrench A, making it easier and faster to operate. When installing a large-sized hex socket screw, insert the corresponding hex wrench B into the L-shaped slot B and fix it with the handle, thus accommodating various screw sizes.

[0014] In summary, this utility model has the beneficial effect of facilitating the replacement of wrench heads. Operators only need to carry wrench heads of different sizes to disassemble and install nuts of different types and sizes, reducing the burden of carrying them. It solves the problem that existing wrenches cannot be replaced according to the type and size of nuts. In order to disassemble and install nuts of different types and sizes, operators usually carry multiple wrenches for work, and the wrenches are heavy, which causes inconvenience in carrying them. Attached Figure Description

[0015] Appendix Figure 1 This is a schematic diagram of the structure of this utility model; Appendix Figure 2 This is a schematic diagram of the bottom structure of this utility model; Appendix Figure 3 This is a schematic diagram of the conventional state of this utility model; Appendix Figure 4 This is an exploded view of the present invention; Appendix Figure 5 This is a top view of the present invention; Appendix Figure 6 For the appendix Figure 5 Sectional view at point AA; Appendix Figure 7 For the appendix Figure 6 Enlarged view of point A in the middle.

[0016] In the diagram: 1. Handle; 2. Open-end wrench head; 3. Box wrench head; 4. Insert block; 5. Slot A; 6. Square post; 7. Spring; 8. Insert rod A; 9. Insert rod B; 10. Slot B; 11. Slot C; 12. Slot D; 13. Slot E; 14. Socket; 15. Magnet A; 16. Magnet B; 17. Guide bar; 18. Guide groove; 19. Round head; 20. Allen wrench A; 21. Screw; 22. Push plate; 23. L-shaped groove A; 24. Screw hole A; 25. Allen wrench B; 26. L-shaped groove B; 27. Screw hole B; 28. Butterfly head. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] like Figure 1-7 As shown, this utility model discloses a wrench for easy replacement of wrench heads, including a handle 1, an open-end wrench head 2 and a box wrench head 3 located on the left and right sides of the handle 1 respectively. Both the open-end wrench head 2 and the box wrench head 3 are connected to the handle 1 via a connecting assembly. The handle 1 is provided with an extension assembly. Each of the open-end wrench head 2 and the box wrench head 3 has a fixed insert 4 near the handle 1. Slots A5 are provided on both the left and right side walls of the handle 1. The insert 4 is inserted into the slots A5 and makes contact with the handle 1. The connecting assembly includes a square post 6, a spring 7, an insert rod A8, and an insert rod B9 fixedly disposed below the insert rod A8. The handle 1 has a through-hole connecting slot A5. The slot B10 has a slot C11 that is aligned with the slot B10. The square post 6 is inserted into the slot B10 and the slot C11 and is in contact with the handle 1 and the slot 4. The slot B10 has a slot D12 on the side wall away from the open-end wrench head 2 and the box wrench head 3. The bottom wall of the handle 1 has a slot E13 that communicates with the slot D12. The insert rod A8 and the insert rod B9 are located in the slot D12 and the slot E13, respectively. The spring 7 is located in the slot D12 and is in contact with the insert rod A8. The square post 6 has a socket 14 on the side wall away from the open-end wrench head 2 and the box wrench head 3. The insert rod A8 is inserted into the socket 14 and is in contact with the square post 6.

[0019] During assembly, the insert 4 is inserted into slot A5 and connects with the handle 1, causing the open-end wrench head 2 and box wrench head 3 to magnetically connect with magnet A15, thus initially fixing the open-end wrench head 2 and box wrench head 3 and preventing the insert 4 from slipping out of slot A5. After inserting the insert 4 into slot A5, slots B10 and C11 are aligned. The square post 6 is then inserted into slots B10 and C11, connecting with the handle 1 and insert 4. Pulling the insert rod B9 in slot E13 moves it away from the square post 6, causing insert rod B9 to move insert rod A8, retracting it into slot D12 and compressing spring 7. This pushes the square post 6 so that its bottom end magnetically connects with magnet B16, initially fixing the square post 6 and preventing it from slipping out of slots B10 and C11. The square post 6 and magnet B16 are magnetically connected. After connection, slot D12 is aligned with socket 14. Loosen the insert rod B9 to allow spring 7 to return, and insert rod A8 is inserted into socket 14 to abut against square post 6, thus fixing square post 6 completely. Open-end wrench head 2 and box wrench head 3 are further fixed to handle 1 via square post 6, completing the assembly of this utility model. When it is necessary to replace open-end wrench head 2 and box wrench head 3, pull insert rod B9 to retract insert rod A8 into slot D12 and separate it from square post 6. Pull out square post 6 to separate it from handle 1 and insert block 4, and open-end wrench head 2 and box wrench head 3 can be removed. The above disassembly and assembly process does not require tools and can be completed by hand, which facilitates the disassembly and assembly of wrench heads. Other sizes of open-end wrench head 2 and box wrench head 3 can be assembled with handle 1, which facilitates the replacement of wrench heads. When disassembling and assembling fasteners for various components, socket head cap screws are frequently encountered. These screws require a socket head cap wrench. However, sometimes the screw is overtightened. Existing socket head cap wrenches have relatively short lever arms, making it time-consuming and laborious to manually tighten overtightened screws. When the overtightened socket head cap screw is small, insert a socket head cap wrench A20 (corresponding to the screw size) into the L-shaped slot A23, where it contacts the handle 1, and rotate the screw rod 2. 1. Move the push plate 22 backward to clamp the hex wrench A20 between the push plate 22 and the rear side wall of the L-shaped groove A23, thus fixing the hex wrench A20 to the handle 1. At this time, the handle 1 becomes an extended lever arm of the hex wrench A20. By turning the hex wrench A20 through the handle 1, time and effort are saved. When the size of the hex screw is too large, insert the hex wrench B25, which corresponds to the size of the hex screw, into the L-shaped groove B26 and fix it to the handle 1, thus adapting to various sizes of screws. In summary, this utility model has the beneficial effect of facilitating the replacement of wrench heads. Operators only need to carry wrench heads of different sizes to disassemble and install nuts of different types and sizes, reducing the burden of carrying them. It solves the problem that existing wrenches cannot be replaced according to the type and size of nuts. In order to disassemble and install nuts of different types and sizes, operators usually carry multiple wrenches for work, and the wrenches are heavy, which causes inconvenience in carrying them.

[0020] Preferably, the connecting assembly further includes magnets A15 fixedly disposed on the left and right sides of the handle 1 and magnets B16 fixedly disposed below the handle 1. The square post 6, the open-end wrench head 2, and the box wrench head 3 are all made of carbon steel. After the insert block 4 is inserted into the slot A5, the open-end wrench head 2 and the box wrench head 3 are magnetically connected to the magnet A15. After the square post 6 is inserted into the slots B10 and C11, the bottom end of the square post 6 is magnetically connected to the magnet B16. Since the open-end wrench head 2 and the box wrench head 3 are magnetically connected to the magnet A15 after the insert block 4 is inserted into the slot A5, the open-end wrench head 2 and the box wrench head 3 can be initially fixed, which can prevent the insert block 4 from sliding out of the slot A5 and facilitate the subsequent installation of parts; Since the bottom end of the square post 6 is magnetically connected to the magnet B16 after the square post 6 is inserted into the slot B10 and the slot C11, the square post 6 can be initially fixed, which can prevent the square post 6 from sliding out of the slot B10 and the slot C11, thereby aligning the slot D12 with the socket 14.

[0021] Preferably, guide bars 17 are fixedly provided on both the front and rear side walls of the slot, and guide grooves 18 are provided on both the front and rear side walls of the insertion block 4. The guide bars 17 are inserted into the guide grooves 18 and contact the handle 1. Since the guide bars 17 are inserted into the guide grooves 18 and contact the handle 1, they play a guiding role for the insertion block 4.

[0022] Preferably, the bottom end of the insertion rod B9 extends out of the slot E13 and is located below the handle 1. A round head 19 is fixedly disposed above the square post 6 and located above the handle 1. The outer wall of the round head 19 is provided with anti-slip texture. The round head 19 fixedly disposed above the square post 6 and located above the handle 1 facilitates pulling or pushing the square post 6; the anti-slip texture on the outer wall of the round head 19 prevents slippage.

[0023] Preferably, the extension assembly includes an Allen wrench A20, several screws 21, and a push plate 22. The top wall of the handle 1 has an L-shaped groove A23 that matches the Allen wrench A20. The Allen wrench A20 is inserted into the L-shaped groove A23 and contacts the handle 1. The front side wall of the handle 1 has a screw hole A24 communicating with the L-shaped groove A23. The push plate 22 is located within the L-shaped groove A23 and is slidably connected to the handle 1. After the screws 21 are screwed into the screw hole A24, their rear ends are rotatably connected to the push plate 22. Because the Allen wrench A20 is inserted into the L-shaped groove A23 and contacts the handle 1, rotating the screws 21 causes the push plate 22 to move backward, thus clamping the Allen wrench A20 between the push plate 22 and the rear side wall of the L-shaped groove A23, facilitating the installation and removal of the Allen wrench A20.

[0024] Preferably, the extension assembly further includes an internal hex wrench B25, which is larger than the internal hex wrench A20. The top wall of the handle 1 has an L-shaped groove B26 that matches the internal hex wrench B25, and the front side wall of the handle 1 has a threaded hole B27 communicating with the L-shaped groove B26. Because the internal hex wrench B25 is larger than the internal hex wrench A20, and the top wall of the handle 1 has an L-shaped groove B26 that matches the internal hex wrench B25, it facilitates the installation of internal hex wrenches of various sizes. Because the front side wall of the handle 1 has a threaded hole B27 communicating with the L-shaped groove B26, after screwing the screw 21 into the threaded hole B27, the rear end of the screw 21 is rotatably connected to the push plate 22, and the push plate 22 is slidably connected to the handle 1 within the L-shaped groove B26, thus clamping and installing the internal hex wrench B25.

[0025] Preferably, a butterfly head 28 is fixedly provided at the front end of the screw 21. Because the butterfly head 28 is fixedly provided at the front end of the screw 21, it facilitates the rotation of the screw 21, allowing the operator to rotate the screw 21 by hand without the need for additional tools.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wrench for easy replacement of wrench heads, comprising a handle (1), open-end wrench heads (2) and box wrench heads (3) respectively located on the left and right sides of the handle (1), characterized in that: Both the open-end wrench head (2) and the box wrench head (3) are connected to the handle (1) via a connecting component. The handle (1) is provided with an extension component. Both the open-end wrench head (2) and the box wrench head (3) have a fixed insert (4) on the side near the handle (1). The handle (1) has slots A (5) on both the left and right side walls. The insert (4) is inserted into slot A (5) and contacts the handle (1). The connecting component includes a square post (6), a spring (7), a plug A (8), and a plug B (9) fixedly installed below the plug A (8). The handle (1) has a slot B (10) that connects to the slot A (5) through its vertical opening. The insert (4) has a slot C (11) that aligns with the slot B (10) through its vertical opening. The square post (6) is inserted into slots B (10) and C (11) and is in contact with the handle (1) and the insert (4). Slot D (12) is provided on the side wall of slot B (10) away from the open wrench head (2) and the box wrench head (3). Slot E (13) is provided on the bottom wall of the handle (1) and communicates with slot D (12). Insert rod A (8) and insert rod B (9) are located in slot D (12) and slot E (13) respectively. Spring (7) is located in slot D (12) and is in contact with insert rod A (8). Insert hole (14) is provided on the side wall of the square post (6) away from the open wrench head (2) and the box wrench head (3). Insert rod A (8) is inserted into insert hole (14) and is in contact with square post (6).

2. The wrench with a convenient wrench head replacement according to claim 1, characterized in that: The connecting assembly also includes magnets A (15) fixedly disposed on the left and right sides of the handle (1) and magnets B (16) fixedly disposed below the handle (1). The square post (6), open wrench head (2) and box wrench head (3) are all made of carbon steel. After the insert block (4) is inserted into slot A (5), the open wrench head (2) and box wrench head (3) are magnetically connected to magnet A (15). After the square post (6) is inserted into slot B (10) and slot C (11), the bottom end of the square post (6) is magnetically connected to magnet B (16).

3. A wrench for easy head replacement according to claim 1, characterized in that: Guide bars (17) are fixedly installed on both the front and rear side walls of the slot, and guide grooves (18) are opened on both the front and rear side walls of the insert (4). The guide bars (17) are inserted into the guide grooves (18) and contact the handle (1).

4. A wrench for easy head replacement according to claim 1, characterized in that: The bottom end of the insertion rod B (9) extends out of the slot E (13) and is located below the handle (1). A round head (19) is fixedly installed above the square column (6) and located above the handle (1). Anti-slip texture is provided on the outer wall of the round head (19).

5. A wrench for conveniently changing wrench heads according to claim 1, characterized in that: The extension assembly includes an internal hex wrench A (20), several screws (21) and a push plate (22). The top wall of the handle (1) is provided with an L-shaped groove A (23) that matches the internal hex wrench A (20). The internal hex wrench A (20) is inserted into the L-shaped groove A (23) and contacts the handle (1). The front side wall of the handle (1) is provided with a screw hole A (24) that communicates with the L-shaped groove A (23). The push plate (22) is located in the L-shaped groove A (23) and is slidably connected to the handle (1). After the screws (21) are screwed into the screw hole A (24), the rear end of the screws (21) is rotatably connected to the push plate (22).

6. A wrench for conveniently changing wrench heads according to claim 5, characterized in that: The extension component also includes an internal hex wrench B (25), which is larger than the internal hex wrench A (20). The top wall of the handle (1) is provided with an L-shaped groove B (26) that matches the internal hex wrench B (25), and the front side wall of the handle (1) is provided with a screw hole B (27) that connects to the L-shaped groove B (26).

7. A wrench for easy head replacement according to claim 5, characterized in that: A butterfly head (28) is fixedly provided at the front end of the screw (21).

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