Pipe scissors capable of being replaced quickly

Abstract

A pair of pipe scissors capable of rapidly changing cutters comprises a cutter handle provided with a blade, a positioning hole is formed in the tail end of the blade, and a cutter retracting notch is formed in the side face of the positioning hole. A positioning column is arranged on the cutter handle, a cutter retracting section and a positioning section are sequentially arranged on the positioning column, the size of the cutter retracting section is smaller than that of the cutter retracting notch, the positioning section is matched with the positioning hole, and the size of the positioning section is larger than that of the cutter retracting notch; the positioning column can move in the axial direction under the control of external force, so that the tool retracting section and the positioning section can alternately correspond to the positioning hole. According to the utility model, through the movement of the positioning column and the mutual matching of the positioning hole with the tool retracting notch, the blade is quickly disassembled, so that the purpose of quickly changing the blade is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe cutting tools, in particular to a pair of pipe scissors capable of quickly changing blades. Background Art

[0002] Aluminum-plastic pipes usually need to be cut according to the required length during construction. Pipe scissors are a commonly used cutting tool, which has the advantages of easy operation and portability. The blades of pipe scissors will wear out during long-term use. Continued use can easily cause uneven cuts, affecting the cutting quality, and then causing quality problems after the pipe is installed. However, the blades of the pipe scissors commonly used at present are fixed on the handle and cannot be replaced; the blades of some scissors can be replaced, but it is inconvenient to replace, and the scissors usually need to be disassembled, affecting work efficiency. Utility Model Content

[0003] The utility model aims to provide a pair of pipe scissors capable of quickly changing blades, so as to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pair of pipe scissors capable of quickly changing blades, comprising a handle with a blade installed, a positioning hole provided at the rear end of the blade, and a knife retraction notch provided on the side of the positioning hole; a positioning column is provided on the handle, and a knife retraction section and a positioning section are provided on the positioning column in sequence, the size of the knife retraction section is smaller than the size of the knife retraction notch, the positioning section matches the positioning hole and the size of the positioning section is larger than the size of the knife retraction notch; the positioning column can move axially under the control of an external force, so that the knife retraction section and the positioning section can correspond to the positioning hole alternately.

[0005] Preferably, the knife handle is provided with a blade slot, and the shape of the blade slot matches the shape of the blade tail end.

[0006] Preferably, the knife handle is provided with a penetrating positioning column mounting hole, and sealing covers are fixedly provided at both ends of the positioning column mounting hole.

[0007] Preferably, a return spring is provided at one end of the positioning column away from the tool retraction section.

[0008] Preferably, one end of the positioning post away from the positioning section passes through the sealing cover to form a pressing portion.

[0009] Preferably, a limiting convex ring is provided at the bottom end of the pressing portion.

[0010] Compared with the prior art, the utility model has the beneficial effect that the utility model realizes the rapid disassembly of the blade through the movement of the positioning column and the mutual cooperation of the positioning hole with the blade retraction notch, thereby achieving the purpose of rapid blade replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is an exploded schematic diagram of the knife handle in the utility model.

[0013] Figure 3 It is a schematic diagram of the coordination of the positioning column and the positioning hole in the utility model.

[0014] Figure 4 It is a structural schematic diagram of the blade in the utility model.

[0015] In the figure: 1. fixed handle; 2. knife handle; 3. pin shaft; 4. blade; 5. positioning hole; 6. knife retraction notch; 7. positioning column mounting hole; 8. positioning column, 81. pressing part, 82. limiting convex ring, 83. knife retraction section, 84. positioning section; 9. cover; 10. screw; 11. reset spring. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clearly understood, the utility model is further specifically described below through embodiments.

[0017] Embodiment: A pipe scissors capable of rapid knife change, such as Figure 1-4 As shown, it includes a fixed handle 1 and a knife handle 2, which are connected by a pin 3.

[0018] A blade 4 is provided at the front end of the handle 2. Specifically, a blade slot matching the shape of the rear end of the blade 4 is provided at the front end of the handle 2, and the rear end of the blade 4 is roughly wedge-shaped, so that the blade can be smoothly inserted into the blade slot and inserted into place.

[0019] In the above structure, the blade 4 is fixed by the positioning column 8 and the positioning hole 5 .

[0020] Specifically, a positioning hole 5 is provided at the rear end of the blade 4 , and a blade retraction notch 6 is provided on one side of the positioning hole 5 close to the rear end of the blade. The width of the blade retraction notch 6 is smaller than the aperture of the positioning hole 5 .

[0021] A through positioning column mounting hole 7 is provided on the handle 2 at a position corresponding to the positioning hole 5, and the positioning column 8 is installed in the hole, and covers 9 are provided at both ends of the positioning column mounting hole 7, and the covers 9 are fixed to the handle 2 by screws 10, and the covers 9 adopt an embedded design to ensure the overall beauty of the handle. The top of the positioning column 8 passes through the corresponding cover to form a pressing portion 81, and a limiting convex ring 82, a knife retreating section 83, and a positioning section 84 are arranged below the pressing portion 81 in sequence, wherein the limiting convex ring 82 is located on the inner side of the cover for limiting; the diameter of the knife retreating section 83 is slightly smaller than the width of the knife retreating notch 6, and the size of the positioning section 84 matches the positioning hole 5; the bottom end of the positioning column 8 (i.e., the end away from the knife retreating section) is provided with a reset spring 11, and the two ends of the reset spring 11 are respectively in contact with the lower end surface of the positioning section 84 and the corresponding cover.

[0022] In the normal use state of the pipe scissors of this embodiment, the positioning column 8, under the elastic force of the return spring 11, the limiting convex ring 82 abuts against the inner side of the corresponding cover 9, and the positioning section 84 is located in the positioning hole 5 of the blade, and the size of the positioning section 84 is larger than the size of the retracting notch 6, so the blade 4 is fixed on the handle 2. When the blade needs to be replaced, it is only necessary to press the pressing portion 81 extending to the outside of the cover to move the positioning column 8 downward until the positioning section 84 is separated from the positioning hole 5. At this time, the retracting section 83 is located in the positioning hole 5. Since the size of the retracting section 83 is smaller than the size of the retracting notch 6, the blade can be directly taken out; similarly, when installing a new blade, it is only necessary to press the pressing portion 81, insert the blade 4 into the blade slot, and then release it. The positioning column 8 is reset under the action of the return spring, and the positioning section 84 can be returned to the positioning hole 5 to complete the fixing of the blade.

[0023] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A pipe scissors capable of quickly changing blades, comprising a handle with a blade mounted thereon, characterized in that: A positioning hole is provided at the tail end of the blade, and a tool retraction notch is provided on the side of the positioning hole; a positioning column is provided on the shank, and a tool retraction section and a positioning section are provided on the positioning column in sequence, the size of the tool retraction section is smaller than the size of the tool retraction notch, the positioning section matches the positioning hole and the size of the positioning section is larger than the size of the tool retraction notch; the positioning column can move axially under the control of external force, so that the tool retraction section and the positioning section can correspond to the positioning hole alternately.

2. The pipe scissors capable of rapid knife change according to claim 1, characterized in that: The knife handle is provided with a blade slot, and the shape of the blade slot matches the shape of the blade tail end.

3. The pipe scissors capable of rapid knife change according to claim 1, characterized in that: The knife handle is provided with a penetrating positioning column mounting hole, and sealing covers are respectively fixedly provided at both ends of the positioning column mounting hole.

4. The pipe scissors capable of rapid knife change according to claim 3, characterized in that: A return spring is arranged at one end of the positioning column away from the knife retraction section.

5. The pipe scissors capable of rapid knife change according to claim 3, characterized in that: One end of the positioning post away from the positioning section passes through the sealing cover to form a pressing portion.

6. The pipe scissors capable of rapid knife change according to claim 5, characterized in that: A limiting convex ring is provided at the bottom end of the pressing portion.

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