Blade dismounting structure of art knife

Abstract

The utility model relates to the technical field of art knives, and discloses an art knife blade dismounting structure which comprises a knife shell, racks fixedly connected to the inner walls of the two opposite sides of the knife shell, a blade arranged on the inner side of the knife shell, a through hole formed in one side of the blade, and a pushing assembly arranged at the top in the knife shell and used for pushing the blade. The clamping shell is clamped and fixed to one end of the cutter shell, the auxiliary clamping assembly is arranged on the side, close to the clamping shell, of the cutter shell, the clamping shell and the cutter shell are secondarily reinforced and fixed through the configured auxiliary clamping assembly, and the situation that the internal pushing assembly and the blade are accidentally disengaged from the cutter shell due to falling of the clamping shell can be practically avoided; according to the blade dismounting structure of the art knife, the functions, the stability and the use convenience are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of utility knife technology, specifically to a utility knife blade disassembly structure. Background Technology

[0002] Utility knives, as a common manual cutting tool, are widely used in packaging, handicrafts, advertising design, and many other fields. They typically consist of a blade shell, a blade, and a snap-fit ​​shell. The secure installation of the snap-fit ​​shell is crucial for the normal use of the utility knife and the user experience. In existing utility knife designs, the connection between the blade shell and the snap-fit ​​shell varies. One common design involves creating snap-fit ​​interfaces on the inner walls of opposite sides of the blade shell, while snap-fit ​​plastic blocks, adapted to these interfaces, are fixedly attached to the outer walls of opposite sides of the snap-fit ​​shell. By aligning the snap-fit ​​plastic blocks with the interfaces and inserting them, the elasticity of the plastic material achieves a snap-fit ​​fixation.

[0003] Existing devices have some drawbacks during use. For example, during actual use of a utility knife, the locking shell is frequently subjected to various forces, such as impacts that may occur when the user applies external force to the utility knife. Under such conditions for a long time, or when subjected to large external forces, the locking plastic block is prone to deformation or wear. Once the locking plastic block is deformed or worn, the fit between it and the locking interface will become less tight, resulting in an unstable locking. At this time, the locking shell is easy to fall off the knife shell, thus affecting the normal use of the utility knife. Utility Model Content

[0004] The purpose of this utility model is to provide a disassembly structure for utility knife blades, which solves the problem that during the actual use of utility knives, the locking shell is frequently subjected to various forces, and the locking plastic block is easily deformed or worn. Once the locking plastic block is deformed or worn, the fit between it and the locking interface will no longer be tight, resulting in an unstable locking.

[0005] This utility model provides the following technical solution: a utility knife blade disassembly structure, including a knife shell, racks fixedly connected to the inner walls of opposite sides of the knife shell, a blade disposed inside the knife shell, a through hole opened on one side of the blade, a pushing component for pushing the blade disposed at the top inside the knife shell, a snap-fit ​​shell snapped and fixed at one end of the knife shell, and an auxiliary snap-fit ​​component disposed on the side of the knife shell near the snap-fit ​​shell.

[0006] As a preferred embodiment of the above technical solution, the pushing assembly includes a pushing block that slides on the top of the tool housing, a positioning post adapted to the through hole is fixedly connected to the bottom wall of the pushing block, and connecting rods are symmetrically fixedly connected to the top of the pushing block, with locking posts adapted to the rack fixedly connected to the ends of the two connecting rods.

[0007] As a preferred embodiment of the above technical solution, the auxiliary snap-fit ​​assembly includes accommodating cavities symmetrically opened on both sides of the upper end face of the tool housing and insert plates symmetrically fixed on the side wall of the snap-fit ​​housing. Each insert plate is provided with snap-fit ​​holes. Slots adapted to the insert plates are symmetrically opened on both sides of the side wall of the tool housing. A snap-fit ​​rod adapted to the snap-fit ​​holes is vertically inserted into the inner side of the accommodating cavity. A lifting block is fixedly connected to the top of the snap-fit ​​rod. A lifting plate is fixedly sleeved on the outer wall of the snap-fit ​​rod. A return spring is fixedly connected to the upper end face of the lifting plate. The return spring is wound around the outer wall of the snap-fit ​​rod.

[0008] As a preferred embodiment of the above technical solution, the inner walls of the opposite sides of the tool housing are provided with snap-fit ​​interfaces, and the outer walls of the opposite sides of the snap-fit ​​shell are fixedly connected with snap-fit ​​plastic blocks adapted to the snap-fit ​​interfaces. The snap-fit ​​shell is snap-fitted and fixed to the tool housing through the cooperation of the snap-fit ​​plastic blocks and the snap-fit ​​interfaces.

[0009] As a preferred embodiment of the above technical solution, the slot and the receiving cavity are connected, and the bottom of the locking rod extends into the slot.

[0010] As a preferred embodiment of the above technical solution, the push block is made of plastic.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this utility model, the auxiliary snap-fit ​​assembly is configured to reinforce and fix the snap-fit ​​shell and the blade shell for a second time, which can effectively prevent the internal pushing assembly and the blade from accidentally detaching from the blade shell due to the snap-fit ​​shell falling off. The utility knife blade disassembly structure will be significantly improved in terms of functionality, stability and ease of use. Attached Figure Description

[0013] Figure 1 A three-dimensional structural diagram of a utility knife blade disassembly mechanism;

[0014] Figure 2 A first exploded structural diagram of a utility knife blade disassembly structure;

[0015] Figure 3 A second exploded structure diagram of a utility knife blade disassembly mechanism;

[0016] Figure 4 This is a partial cross-sectional view of the tool housing.

[0017] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Tool housing; 101. Snap-fit ​​interface; 11. Rack; 12. Blade; 13. Through hole; 14. Snap-fit ​​shell; 141. Snap-fit ​​plastic block; 2. Push assembly; 21. Push block; 22. Positioning post; 23. Connecting rod; 24. Snap-fit ​​post; 3. Auxiliary snap-fit ​​assembly; 31. Receiving cavity; 32. Insert plate; 33. Snap-fit ​​hole; 34. Slot; 35. Snap-fit ​​rod; 36. Lifting block; 37. Lifting plate; 38. Return spring. Detailed Implementation

[0019] 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.

[0020] Example

[0021] like Figures 1-5 As shown, this utility model provides a technical solution: a utility knife blade disassembly structure, including a knife shell 1, with racks 11 fixedly connected to the inner walls of opposite sides of the knife shell 1, a blade 12 disposed inside the knife shell 1, a through hole 13 on one side of the blade 12, a pushing component 2 for pushing the blade 12 disposed at the top inside the knife shell 1, a locking shell 14 fixedly engaged at one end of the knife shell 1, and an auxiliary locking component 3 disposed on the side of the knife shell 1 near the locking shell 14. In specific use, by operating the pushing component 2, the blade 12 extends out of the knife shell 1 to different lengths, thereby flexibly adjusting the cutting depth and range. The auxiliary locking component 3 further fixes the locking shell 14 to the knife shell 1, thereby preventing the locking shell 14 from falling off and causing the internal pushing component 2 and the blade 12 to detach from the knife shell 1. This utility knife blade 12 disassembly structure will be significantly improved in terms of function, stability and ease of use.

[0022] As one implementation method in this embodiment, such as Figure 3As shown, the pushing assembly 2 includes a pushing block 21 that slides on the top of the tool housing 1. The pushing block 21 is made of plastic. A positioning post 22 adapted to the through hole 13 is fixedly connected to the bottom wall of the pushing block 21. Connecting rods 23 are symmetrically fixedly connected to the top of the pushing block 21. Each end of the two connecting rods 23 is fixedly connected to a locking post 24 adapted to the rack 11. In actual use, the through hole 13 of the blade 12 is aligned with the positioning post 22 and inserted. Then, the pushing block 21 is inserted into the sliding area on the tool housing 1. Manually press and push the push block 21 outwards, causing it to bend. This causes the push block 21 to move the connecting rod 23 and its locking pin 24 downwards, thus moving the locking pin 24 away from the rack 11. When the push block 21 is moved to a certain position, the blade 12 extends a certain length. When the blade 12 is at the appropriate length, the push block 21 is no longer manually pressed. The rebound force generated by the deformation of the push block 21 causes the connecting rod 23 and its locking pin 24 to move upwards. The locking pin 24 then engages with the rack 11, thereby fixing the length of the blade 12.

[0023] As one implementation method in this embodiment, such as Figure 2 , Figure 4 and Figure 5 As shown, the auxiliary snap-fit ​​assembly 3 includes accommodating cavities 31 symmetrically opened on both sides of the upper end face of the tool housing 1 and insert plates 32 symmetrically fixed on the side walls of the snap-fit ​​housing 14. Each insert plate 32 has snap-fit ​​holes 33. Slots 34 adapted to the insert plates 32 are symmetrically opened on both sides of the side walls of the tool housing 1. A snap-fit ​​rod 35 adapted to the snap-fit ​​holes 33 is vertically inserted into the inner side of the accommodating cavity 31. A lifting block 36 is fixedly connected to the top of the snap-fit ​​rod 35. A lifting plate 37 is fixedly sleeved on the outer wall of the snap-fit ​​rod 35. A return spring 38 is fixedly connected to the upper end face of the lifting plate 37 and is wound around the outer wall of the snap-fit ​​rod 35. In actual use, when installing the snap-fit ​​housing 14... The insert plate 32 on the snap-fit ​​housing 14 is aligned with the slot 34 and inserted. During insertion, the insert plate 32 abuts against the snap-fit ​​rod 35. The abutting force causes the snap-fit ​​rod 35 to move upward, causing the lifting plate 37 to compress the return spring 38. Then the insert plate 32 continues to be inserted until the snap-fit ​​hole 33 on the insert plate 32 is directly below the snap-fit ​​rod 35. The snap-fit ​​rod 35 is inserted into the snap-fit ​​hole 33 to fix the insert plate 32, thereby further improving the stability of the connection between the snap-fit ​​housing 14 and the tool housing 1. When it is necessary to disassemble the snap-fit ​​housing 14, simply pull the lifting block 36. The lifting block 36 can also be pried up by using a pad or other hard object, making it simple and quick to use.

[0024] As one implementation method in this embodiment, such as Figure 3As shown, the inner walls of the opposite sides of the tool housing 1 are provided with snap-fit ​​interfaces 101, and the outer walls of the opposite sides of the snap-fit ​​shell 14 are fixedly connected with snap-fit ​​plastic blocks 141 adapted to the snap-fit ​​interfaces 101. The snap-fit ​​shell 14 is snap-fitted and fixed to the tool housing 1 through the cooperation of the snap-fit ​​plastic blocks 141 and the snap-fit ​​interfaces 101. In actual use, the snap-fit ​​plastic blocks 141 on the snap-fit ​​shell 14 are aligned with the two snap-fit ​​interfaces 101 on the tool housing 1 and inserted until the snap-fit ​​plastic blocks 141 are inserted into the snap-fit ​​interfaces 101.

[0025] As one implementation method in this embodiment, such as Figure 5 As shown, the slot 34 and the receiving cavity 31 are internally connected, and the bottom of the snap-fit ​​rod 35 extends into the slot 34, so as to facilitate the snap-fit ​​rod 35 being inserted into the snap-fit ​​hole 33 in the insert plate 32.

[0026] Working principle: In use, first, align the snap-fit ​​plastic block 141 on the snap-fit ​​housing 14 with the two snap-fit ​​interfaces 101 on the tool housing 1 and insert it until the snap-fit ​​plastic block 141 is inserted into the snap-fit ​​interface 101. At the same time, the insert plate 32 will be inserted into the slot 34. During the insertion process, the insert plate 32 abuts against the snap-fit ​​rod 35. Through the abutment force, the snap-fit ​​rod 35 moves upward, causing the lifting plate 37 to squeeze the return spring 38. Then the insert plate 32 continues to be inserted until the snap-fit ​​hole 33 on the insert plate 32 is directly below the snap-fit ​​rod 35. The snap-fit ​​rod 35 is inserted into the snap-fit ​​hole 33 to fix the insert plate 32, thereby further improving the stability of the connection between the snap-fit ​​housing 14 and the tool housing 1. When it is necessary to disassemble the snap-fit ​​housing 14, simply pull the lifting block 36. The lifting block 36 can also be pried up by using a pad or other hard object. It is simple and quick to use.

[0027] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A utility knife blade disassembly structure, comprising a blade housing (1), characterized in that: A rack (11) is fixedly connected to the inner walls of the opposite sides of the cutter housing (1). A blade (12) is provided inside the cutter housing (1). A through hole (13) is provided on one side of the blade (12). A pushing assembly (2) for pushing the blade is provided at the top inside the cutter housing (1). A snap-fit ​​shell (14) is snapped and fixed at one end of the cutter housing (1). An auxiliary snap-fit ​​assembly (3) is provided on the side of the cutter housing (1) near the snap-fit ​​shell (14).

2. The utility knife blade disassembly structure according to claim 1, characterized in that: The pushing assembly (2) includes a pushing block (21) that slides on the top of the tool housing (1). A positioning post (22) adapted to the through hole (13) is fixedly connected to the bottom wall of the pushing block (21). Connecting rods (23) are symmetrically fixedly connected to the top of the pushing block (21). The ends of the two connecting rods (23) are fixedly connected to a locking post (24) adapted to the rack (11).

3. The utility knife blade disassembly structure according to claim 1, characterized in that: The auxiliary snap-fit ​​assembly (3) includes accommodating cavities (31) symmetrically opened on both sides of the upper end face of the tool housing (1) and insert plates (32) symmetrically fixed on the side wall of the snap-fit ​​housing (14). Each insert plate (32) is provided with snap-fit ​​holes (33). The side wall of the tool housing (1) is symmetrically provided with slots (34) adapted to the insert plates (32). A snap-fit ​​rod (35) adapted to the snap-fit ​​holes (33) is vertically inserted into the inner side of the accommodating cavity (31). A lifting block (36) is fixedly connected to the top of the snap-fit ​​rod (35). A lifting plate (37) is fixedly sleeved on the outer wall of the snap-fit ​​rod (35). A return spring (38) is fixedly connected to the upper end face of the lifting plate (37). The return spring (38) is wound around the outer wall of the snap-fit ​​rod (35).

4. The utility knife blade disassembly structure according to claim 1, characterized in that: The inner walls of the opposite sides of the tool housing (1) are provided with snap-fit ​​interfaces (101), and the outer walls of the opposite sides of the snap-fit ​​shell (14) are fixedly connected with snap-fit ​​plastic blocks (141) adapted to the snap-fit ​​interfaces (101). The snap-fit ​​shell (14) is fixed to the tool housing (1) by the cooperation of the snap-fit ​​plastic blocks (141) and the snap-fit ​​interfaces (101).

5. The utility knife blade disassembly structure according to claim 3, characterized in that: The slot (34) and the receiving cavity (31) are internally connected, and the bottom of the snap-fit ​​rod (35) extends into the slot (34).

6. The utility knife blade disassembly structure according to claim 2, characterized in that: The push block (21) is made of plastic.

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