Electrician's knife with quick blade change

Abstract

The application relates to an electrician knife with quick tool replacement, which comprises a handle, a tool head and a quick replacement structure, the handle is internally provided with a containing cavity, one end of the containing cavity is an open end, the tool head comprises a cutting edge and a plug-in handle covered at the tail end of the cutting edge, the plug-in handle is plugged into the containing cavity through the open end of the containing cavity, the quick replacement structure comprises a locking block and a locking piece, a through hole is arranged on the side wall of the handle and is communicated with the containing cavity, the locking block is slidingly plugged into the through hole and extends into the containing cavity, a sliding groove is arranged on the plug-in handle along the length direction, one end of the plug-in handle close to the cutting edge is provided with a locking groove along the width direction, the locking groove is communicated with one end of the sliding groove close to the cutting edge, the locking block is slidingly matched with the sliding groove, and the locking block is clamped and matched with the locking groove under the pushing of the locking piece. The electrician knife can quickly replace the tool head through the containing cavity on the handle and the cooperation of the plug-in handle on the tool head under the action of the quick replacement structure.

Description

Technical Field

[0001] This application relates to the field of power tools, and more particularly to a quick-change electrician's knife. Background Technology

[0002] With the rapid development of modern industry, electrical engineering work has become increasingly frequent and complex. In this field, the electrician's knife, as one of the essential tools, directly impacts the quality and safety of an electrician's work.

[0003] While traditional electrician's knives can perform basic cutting tasks, they have some limitations in actual use, especially when frequent blade changes are required or when quick blade changes are needed in emergencies to adapt to different cutting needs.

[0004] For example, Chinese utility model patent CN217362380U discloses an electrician's knife, including a handle and a blade. The handle has a groove inside, and the blade is movably mounted at one end of the handle. One side of the blade has a cutting edge, and the other side has a streamlined circumferential cutting edge. This electrician's knife, by setting multiple functional areas on the blade, such as an arc-shaped cutting edge for oblique cutting of insulation and a streamlined circumferential cutting edge for ring cutting of wires of different diameters, does solve the problem of traditional electrician's knives being unable to adapt to different cutting needs to some extent. However, in actual use, due to the large differences in torque between different areas, this design is not very convenient.

[0005] Therefore, there is a greater need for an electrician's knife that allows for easy tip replacement based on the required functions. Utility Model Content

[0006] To facilitate easy tip replacement according to required functions, this application provides a quick-change electrician's knife.

[0007] The quick-change electrician's knife provided in this application adopts the following technical solution:

[0008] An electrician's knife with quick-change function includes a handle, a blade, and a quick-change mechanism. The handle has a receiving cavity with one end open. The blade includes a cutting edge and a connecting handle covering the end of the cutting edge. The connecting handle is inserted into the receiving cavity through the open end. The quick-change mechanism includes a locking block and a locking element. A through hole is formed on the side wall of the handle, which communicates with the receiving cavity. The locking block is slidably inserted into the through hole and extends into the receiving cavity. A sliding groove is formed along the length direction on the connecting handle. A locking groove is formed along the width direction at the end of the connecting handle near the cutting edge, and the locking groove communicates with the end of the sliding groove near the cutting edge. The locking block slides with the sliding groove and engages with the locking groove under the push of the locking element.

[0009] By adopting the above technical solution, the engagement of the blade tip's insertion handle and the receiving cavity of the handle allows the blade tip and handle to be assembled into a complete electrician's knife. When the insertion handle of the blade tip is inserted into the receiving cavity of the handle through its open end, the locking block slides along the groove on the insertion handle until the blade tip is installed in the designed position. At this point, the locking element drives the locking block to slide from the groove into the locking groove and engages with it, preventing the blade tip from being pulled out. When it is necessary to replace the blade tip, simply press the locking element to make the locking block slide from the locking groove into the groove, and then pull the blade tip to remove it. The electrician's knife of this application enables quick blade tip replacement, improving the efficiency and convenience of using the electrician's knife.

[0010] Optionally, the width of the groove on the side away from the cutting edge is greater than the width of the groove on the side closer to the cutting edge.

[0011] By adopting the above technical solution and optimizing the design of the slide groove, the width of the slide groove on the side away from the blade is greater than the width on the side closer to the blade. As a result, when the insertion handle of the blade head is inserted into the receiving cavity, the locking block is easier to slide into the slide groove from the wider side. Furthermore, during the sliding process, the slide groove, whose width is constantly decreasing, guides the locking block, improving the ease of installation and reducing the possibility of jamming during installation.

[0012] Optionally, the locking component includes a locking spring, a locking button, a mounting block, and connecting handles. The mounting block is located inside the through hole, and both ends of the mounting block are connected to the inner wall of the through hole. The locking button is slidably mounted on the end of the through hole away from the receiving cavity. One end of the locking spring abuts against the locking button, and the other end of the locking spring abuts against the mounting block. There are two connecting handles, each fixedly connected to one end of the locking button. Each of the two connecting handles is fixedly connected to a locking block at the end away from the locking button.

[0013] By adopting the above technical solution, the locking mechanism, through the coordinated action of the locking spring, locking button, mounting block, and connecting handle, ensures that when the cutting head's insertion handle is inserted into the receiving cavity, the continuously narrowing slide groove pushes the locking block. This, in turn, causes the connected connecting handle and locking button to move towards the receiving cavity within the through hole. During this process, the locking spring is further compressed. When the cutting head is in place, the restoring force of the locking spring pulls the locking block from the slide groove into the locking groove via the connecting handle, achieving a secure lock on the cutting head and ensuring safety and reliability during use.

[0014] Optionally, both of the two connecting handles have anti-detachment blocks on their sidewalls that are close to each other. The anti-detachment blocks are pressed against the mounting block by the locking spring.

[0015] By adopting the above technical solution, the design of the anti-detachment block effectively prevents the locking block from falling off under the action of spring force, further improving the stability and safety of the cutter head locking.

[0016] Optionally, the insertion handle of the blade head is further provided with a receiving groove, and the anti-detachment block is located in the receiving groove.

[0017] By adopting the above technical solution, when installing the cutter head, the anti-detachment block located on the connector handle will also move accordingly. An additional receiving groove is provided to reserve sliding space for the anti-detachment block, so as to prevent the anti-detachment block from interfering with the connector handle, thereby further improving the installation stability of the cutter head.

[0018] Optionally, the mounting block has a slot, and the end of the locking spring facing away from the locking button is engaged in the slot.

[0019] By adopting the above technical solution, the slot design allows the locking spring to be stably fixed on the mounting block, maintaining the spring tension and ensuring the durability and stability of the cutter head locking.

[0020] Optionally, the inner wall of the receiving cavity is provided with a guide groove, which slides in conjunction with the connecting handle.

[0021] By adopting the above technical solution, the guide groove design provides precise sliding guidance for the connecting handle, ensuring the correct installation and positioning of the cutter head, and improving the accuracy of cutter head replacement and the convenience of operation.

[0022] Optionally, the opening end of the receiving cavity is provided with a protective plate, and the electrician's knife also includes a sheath, which is sleeved on the protective plate.

[0023] By adopting the above technical solutions, the design of the guard plate and sheath provides additional protection for the electrician's knife, preventing the blade from injuring the user. At the same time, the design of the sheath makes it easy to carry and store, improving the practicality of the electrician's knife.

[0024] Optionally, the protective plate is provided with anti-detachment protrusions, and the sheath is provided with anti-detachment holes for accommodating the anti-detachment protrusions.

[0025] By adopting the above technical solutions, the design of the anti-detachment protrusion and anti-detachment hole effectively prevents the sheath from accidentally falling off during carrying, ensuring the safety and reliability of carrying the electrician's knife.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] The electrician's knife of this application, through the cooperation of the receiving cavity on the handle and the plug handle on the blade head, can quickly complete the replacement of the blade head under the action of the quick-change structure. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the electrician's knife according to an embodiment of this application.

[0029] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application, with the scabbard in the removed state.

[0030] Figure 3 This is a cross-sectional view of the overall structure of the electrician's knife according to an embodiment of this application.

[0031] Figure 4 This is a longitudinal cross-sectional view of the knife handle according to an embodiment of this application.

[0032] Figure 5 This is a cross-sectional view of the overall structure of the knife handle in the horizontal direction according to an embodiment of this application.

[0033] Figure 6 This is a schematic diagram of the overall structure of the cutter head according to an embodiment of this application.

[0034] Figure 7 This is a schematic diagram of the structure of a cutter head that can be selected from the embodiments of this application.

[0035] Explanation of reference numerals in the attached drawings: 1. Handle; 2. Receiving cavity; 3. Open end; 4. Blade head; 5. Blade edge; 6. Insert handle; 7. Through hole; 8. Locking block; 9. Slide groove; 10. Locking groove; 11. Locking element; 12. Locking spring; 13. Locking button; 14. Mounting block; 15. Connecting handle; 16. Anti-detachment block; 17. Slot; 18. Guide groove; 19. Protective plate; 20. Sheath; 21. Anti-detachment protrusion; 22. Anti-detachment hole; 23. Receiving groove. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail. Example

[0037] Reference Figures 1-7 The quick-change electrician's knife of this embodiment includes a handle 1, a blade head 4, and a quick-change mechanism. The handle 1 has a receiving cavity 2, one end of which is an open end 3. The blade head 4 includes a cutting edge 5 and a plug-in handle 6 covering the end of the cutting edge 5. It can be understood that the blade head 4 in this embodiment can be... Figure 7 The blade 4 can be any one of several types of blade heads, and the blade 5 of the blade head 4 can be a cutting blade or a file with a grinding function. The insertion handle 6 is inserted into the receiving cavity 2 through the open end 3 of the receiving cavity 2.

[0038] A through hole 7 is provided on the side wall of the handle 1, and the through hole 7 communicates with the receiving cavity 2. The locking block 8 is slidably inserted into the through hole 7 and extends into the receiving cavity 2. A sliding groove 9 is provided along the length direction on the insertion handle 6, and a locking groove 10 is provided along the width direction at the end of the insertion handle 6 near the blade 5. The locking block 8 slides with the sliding groove 9, and the locking block 8 is engaged with the locking groove 10 under the push of the locking member 11.

[0039] The locking component 11 includes a locking spring 12, a locking button 13, a mounting block 14, and connecting handles 15. The mounting block 14 is located inside the through hole 7, and both ends of the mounting block 14 are connected to the inner wall of the through hole 7. The locking button 13 is slidably mounted on the end of the through hole 7 away from the receiving cavity 2. One end of the locking spring 12 abuts against the locking button 13, and the other end of the locking spring 12 abuts against the mounting block 14. There are two connecting handles 15, which are respectively fixedly connected to both ends of the locking button 13. Each of the two connecting handles 15 away from the locking button 13 has a locking block 8 fixedly connected to its end.

[0040] Both connecting handles 15 have anti-disengagement blocks 16 on their adjacent sidewalls. These anti-disengagement blocks 16 are pressed against the mounting block 14 by the locking spring 12. To prevent interference between the anti-disengagement blocks 16 and the insertion handle 6 during the installation of the cutter head 4, a receiving groove 23 is also provided along the length of the insertion handle 6 in this embodiment. It is worth noting that if the size of the insertion handle 6 prevents interference with the anti-disengagement blocks 16, the receiving groove 23 is not necessary. Figure 7 The device includes several replaceable blades 4. A slot 17 is provided on the mounting block 14, and the end of the locking spring 12 facing away from the locking button 13 is engaged within the slot 17. A guide groove 18 is provided on the inner wall of the receiving cavity 2, and the guide groove 18 slides in conjunction with the connecting handle 15.

[0041] The opening end 3 of the receiving cavity 2 is provided with a protective plate 19 around its perimeter. The electrician's knife also includes a sheath 20, which is sleeved on the protective plate 19. The protective plate 19 is provided with an anti-detachment protrusion 21, and the sheath 20 is provided with an anti-detachment hole 22 for accommodating the anti-detachment protrusion 21.

[0042] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A quick-change electrician's knife, characterized in that: The device includes a handle, a blade, and a quick-change mechanism. The handle has a receiving cavity with one end open. The blade includes a cutting edge and a connecting handle covering the end of the cutting edge. The connecting handle is inserted into the receiving cavity through the open end. The quick-change mechanism includes a locking block and a locking element. The side wall of the handle has a through hole communicating with the receiving cavity. The locking block is slidably inserted into the through hole and extends into the receiving cavity. The connecting handle has a sliding groove along its length. The end of the connecting handle near the cutting edge has a locking groove along its width, communicating with the end of the sliding groove near the cutting edge. The locking block slides into the sliding groove and engages with the locking groove under the push of the locking element.

2. The electrician's knife with quick tool changing according to claim 1, characterized in that: The width of the groove on the side away from the cutting edge is greater than the width of the groove on the side closer to the cutting edge.

3. The electrician's knife with quick tool changing according to claim 1, characterized in that: The locking component includes a locking spring, a locking button, a mounting block, and connecting handles. The mounting block is located inside the through hole, and both ends of the mounting block are connected to the inner wall of the through hole. The locking button is slidably mounted on the end of the through hole away from the receiving cavity. One end of the locking spring abuts against the locking button, and the other end of the locking spring abuts against the mounting block. There are two connecting handles, each fixedly connected to one end of the locking button. Each of the two connecting handles is fixedly connected to a locking block at the end away from the locking button.

4. The electrician's knife with quick tool changing according to claim 3, characterized in that: Both of the two connecting handles have anti-detachment blocks on their sidewalls that are close to each other. The anti-detachment blocks are pressed against the mounting blocks by the locking spring.

5. The electrician's knife with quick tool changing according to claim 4, characterized in that: The insertion handle of the blade is also provided with a receiving groove, and the anti-detachment block is located in the receiving groove.

6. The electrician's knife with quick tool changing according to claim 3, characterized in that: The mounting block has a slot, and the end of the locking spring that is away from the locking button is engaged in the slot.

7. The electrician's knife with quick tool changing according to claim 3, characterized in that: The inner wall of the receiving cavity is provided with a guide groove, which slides in conjunction with the connecting handle.

8. The electrician's knife with quick tool changing according to claim 1, characterized in that: The opening end of the receiving cavity is provided with a protective plate, and the electrician's knife also includes a sheath, which is sleeved on the protective plate.

9. The electrician's knife with quick tool change according to claim 7, characterized in that: The protective plate is provided with anti-detachment protrusions, and the sheath is provided with anti-detachment holes for accommodating the anti-detachment protrusions.

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