Art knife with blade easy to replace

Abstract

The utility model relates to the field of stationery, in particular to an art knife with a blade easy to replace. According to the art knife with the blade easy to replace, the blade can be rapidly replaced, operation is easy, abrasion caused when the art knife is detached is reduced, and using convenience of the art knife is improved. An art knife with a blade easy to replace comprises a knife handle, a moving part, the blade and the like, the left portion of the knife handle is connected with the moving part in a sliding mode, and the blade is connected to the moving part in a clamped mode. The upper moving frame moves upwards to drive the connecting rod to rotate, so that the rotating frame rotates, the lower moving frame moves downwards, the upper moving frame and the lower moving frame do not make contact with the blade any more, then the blade is directly taken out of the moving piece, and the purposes that the blade can be rapidly replaced, operation is simple, and the efficiency is high are achieved. And abrasion caused when the device is disassembled is reduced, and the effect of using the device conveniently is improved.

Description

Technical Field

[0001] The utility model relates to the field of stationery, in particular to a utility knife with an easily replaceable blade. Background Art

[0002] A utility knife is a versatile manual cutting tool that is widely used in various handicrafts, artistic creations, offices, homes, and other occasions. A utility knife usually consists of a handle and a replaceable blade, and is lightweight and easy to carry.

[0003] Existing utility knives usually require removing the back cover of the knife handle, then taking out the push block on the knife, then taking out the blade from the push block, then snapping a new blade onto the push block, then pushing the blade and the push block onto the knife handle, and then snapping the back cover onto the knife handle. However, this disassembly method is relatively cumbersome and easily causes wear to the back cover of the knife handle. It is not convenient to use and is relatively inconvenient.

[0004] Therefore, it is necessary to design a utility knife that can quickly replace the blade, is simple to operate, reduces the wear caused by disassembling the device, and improves the convenience of using the device. Utility Model Content

[0005] In order to overcome the shortcomings of existing utility knives, such as the complicated disassembly method, which easily causes wear to the back cover of the handle, is not convenient to use, and is relatively inconvenient, the utility knife provided by the present invention provides a utility knife with an easy-to-replace blade that can quickly replace the blade, is simple to operate, reduces the wear caused by disassembling the device, and improves the convenience of using the device.

[0006] The technical solution is as follows: A utility knife with an easy-to-replace blade includes a handle, a moving part, a blade and a quick-release assembly. The left part of the handle is slidably connected to the moving part, the blade is clamped on the moving part, the blade is in contact with the handle, and a quick-release assembly is provided on the right part of the handle.

[0007] Optionally, the handle is provided with anti-slip grooves.

[0008] Optionally, a slot is provided on the left side of the blade.

[0009] Optionally, the quick-release assembly includes an upper movable frame, a lower movable frame, a support block, a rotating frame, a torsion spring and a connecting rod. The upper right upper part of the knife handle is slidably connected to the upper movable frame, the lower right lower part of the knife handle is slidably connected to the lower movable frame, the upper movable frame and the lower movable frame are both slidably and detachably connected to the movable part, the front side of the right part of the knife handle is connected to the support block, the right part of the support block is rotatably connected to the rotating frame, a torsion spring is connected between the rotating frame and the support block, the left and right parts of the rotating frame are rotatably connected to the connecting rods, the upper connecting rod is rotatably connected to the upper movable frame, and the lower connecting rod is rotatably connected to the lower movable frame.

[0010] Optionally, it also includes a guide rod, a limiting frame, a sliding wheel and a telescopic spring. The front side of the right part of the support block is connected to the guide rod, the rear part of the guide rod is slidably connected to the sliding wheel, the sliding wheel is rotatably connected to the limiting frame, the upper movable frame and the lower movable frame are both in contact with the limiting frame, and a telescopic spring is connected between the sliding wheel and the guide rod.

[0011] Optionally, the limiting frame is foldable.

[0012] The utility model has the following advantages: 1. The utility model moves the upper movable frame upward to drive the connecting rod to rotate, so that the rotating frame rotates and the lower movable frame moves downward, so that the upper movable frame and the lower movable frame no longer contact the blade, and then the blade is directly taken out from the movable part, so that the blade can be quickly replaced, the operation is simple, the wear caused by disassembling the device is reduced, and the convenience of using the device is improved.

[0013] 2. The utility model moves the limiting frame forward, drives the sliding wheel to move forward on the guide rod, rotates the limiting frame, and then releases the limiting frame to drive the sliding wheel to move and reset, so that the limiting frame contacts the upper movable frame and the lower movable frame, thereby achieving the ability to limit and fix the upper movable frame and the lower movable frame, and preventing the upper movable frame and the lower movable frame from moving and causing the blade to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility knife of the present utility model.

[0016] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the opening and closing mechanism of the present utility model.

[0017] Figure 4 It is a schematic diagram of the cross-sectional three-dimensional structure of the restriction mechanism of the present invention.

[0018] Explanation of the reference numerals: 1: handle, 2: moving part, 3: blade, 4: upper moving frame, 5: lower moving frame, 6: support block, 7: rotating frame, 8: torsion spring, 9: connecting rod, 10: guide rod, 11: limiting frame, 12: sliding wheel, 13: telescopic spring. DETAILED DESCRIPTION

[0019] The following describes embodiments of the present invention with reference to the accompanying drawings.

[0020] A utility knife with easily replaceable blades, such as Figure 1 and Figure 2As shown, it includes a handle 1, a moving part 2, a blade 3 and a quick-release assembly. The handle 1 is provided with anti-slip grooves to prevent slipping. The left part of the handle 1 is slidably connected to the moving part 2, and the blade 3 is clamped on the moving part 2. A slot is provided on the left part of the blade 3 for easy clamping. The blade 3 is in contact with the handle 1, and a quick-release assembly is provided on the right part of the handle 1.

[0021] like Figure 1-Figure 3 As shown, the quick-release assembly includes an upper movable frame 4, a lower movable frame 5, a support block 6, a rotating frame 7, a torsion spring 8 and a connecting rod 9. The upper right portion of the knife handle 1 is slidably connected to the upper movable frame 4, and the lower right portion of the knife handle 1 is slidably connected to the lower movable frame 5. The upper movable frame 4 and the lower movable frame 5 are both slidably and detachably connected to the movable member 2. The front side of the right portion of the knife handle 1 is connected to the support block 6, and the right portion of the support block 6 is rotatably connected to the rotating frame 7. A torsion spring 8 is connected between the rotating frame 7 and the support block 6. The left and right portions of the rotating frame 7 are rotatably connected to the connecting rod 9. The upper connecting rod 9 is rotatably connected to the upper movable frame 4, and the lower connecting rod 9 is rotatably connected to the lower movable frame 5.

[0022] like Figure 1 and Figure 4 As shown, it also includes a guide rod 10, a limiting frame 11, a sliding wheel 12 and a telescopic spring 13. The front side of the right part of the support block 6 is connected to the guide rod 10, and the rear part of the guide rod 10 is slidably connected to the sliding wheel 12. The sliding wheel 12 is rotatably connected to the limiting frame 11. The upper movable frame 4 and the lower movable frame 5 are both in contact with the limiting frame 11. The limiting frame 11 is folded for easy fixation. A telescopic spring 13 is connected between the sliding wheel 12 and the guide rod 10.

[0023] When using the device, first hold the knife handle 1, then push the moving part 2 to move, drive the blade 3 to move, and then use the device to cut the object. When the blade 3 needs to be replaced, the upper moving frame 4 can be moved upward, driving the upper connecting rod 9 to rotate, so that the rotating frame 7 rotates on the support block 6, and the torsion spring 8 is deformed, driving the lower connecting rod 9 to rotate, so that the lower moving frame 5 moves downward, so that the upper moving frame 4 and the lower moving frame 5 no longer contact the blade 3, and then directly take the blade 3 out of the moving part 2, and then clamp the new blade 3 with the moving part 2 through the slot, and then release the upper moving frame 4, the torsion spring 8 is restored, and the rotating frame 7 is rotated and reset, so that the lower movable frame 5 and the upper movable frame 4 are moved and reset, so that the blade 3 can be quickly replaced, the operation is simple, the wear caused by disassembling the device is reduced, and the convenience of using the device is improved. Thereafter, the limiting frame 11 is moved forward, driving the sliding wheel 12 to move forward on the guide rod 10, the telescopic spring 13 is squeezed and contracted, and the limiting frame 11 is rotated again, and then the limiting frame 11 is released, the telescopic spring 13 is restored, driving the sliding wheel 12 to move and reset, so that the limiting frame 11 contacts with the upper movable frame 4 and the lower movable frame 5, so that the upper movable frame 4 and the lower movable frame 5 can be limited and fixed, and the upper movable frame 4 and the lower movable frame 5 can be prevented from moving and causing the blade 3 to fall off.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A utility knife with an easily replaceable blade, characterized in that: The utility model comprises a knife handle (1), a moving part (2), a blade (3) and a quick-release assembly. The left part of the knife handle (1) is slidably connected to the moving part (2), the blade (3) is clamped on the moving part (2), the blade (3) contacts the knife handle (1), and the right part of the knife handle (1) is provided with a quick-release assembly. The quick-release assembly comprises an upper movable frame (4), a lower movable frame (5), a support block (6), a rotating frame (7), a torsion spring (8) and a connecting rod (9); the upper right upper portion of the knife handle (1) is slidably connected to the upper movable frame (4); the lower right lower portion of the knife handle (1) is slidably connected to the lower movable frame (5); the upper movable frame (4) and the lower movable frame (5) are both connected to the movable member (2) in a sliding and detachable manner; the front side of the right portion of the knife handle (1) is connected to the support block (6); the right portion of the support block (6) is rotatably connected to the rotating frame (7); a torsion spring (8) is connected between the rotating frame (7) and the support block (6); the left and right portions of the rotating frame (7) are both rotatably connected to the connecting rod (9); the upper connecting rod (9) is rotatably connected to the upper movable frame (4); and the lower connecting rod (9) is rotatably connected to the lower movable frame (5).

2. The utility knife with easily replaceable blade according to claim 1, characterized in that: The knife handle (1) is provided with anti-slip grooves.

3. The utility knife with easily replaceable blade according to claim 2, characterized in that: The left side of the blade (3) is provided with a slot.

4. The utility knife with easily replaceable blade according to claim 3, characterized in that: The invention also comprises a guide rod (10), a limiting frame (11), a sliding wheel (12) and a telescopic spring (13); the front side of the right portion of the support block (6) is connected to the guide rod (10); the rear portion of the guide rod (10) is slidably connected to the sliding wheel (12); the sliding wheel (12) is rotatably connected to the limiting frame (11); the upper movable frame (4) and the lower movable frame (5) are both in contact with the limiting frame (11); and a telescopic spring (13) is connected between the sliding wheel (12) and the guide rod (10).

5. The utility knife with easily replaceable blade according to claim 4, characterized in that: The limiting frame (11) is in a folding shape.

Images