Quickly disassembled circular knife

Abstract

The utility model provides a circular knife capable of being disassembled quickly. The circular knife is provided with a circular blade, a shell, a fixing shaft and a clamping piece. The circular blade is contained in one face of the shell and can selectively protrude out of the shell. The fixing shaft penetrates through the circular blade and the shell, and the circular blade is arranged on the fixing shaft. The clamping piece is arranged in the shell and provided with a clamping groove and at least one pushing rod. The clamping groove is located at one end of the clamping piece, and the fixing shaft can be clamped in the clamping groove. The pushing rod is located on one face of the clamping piece, protrudes outwards from the surface of the clamping piece and penetrates through the shell. And when the push rod pushes away from the fixed shaft, the clamping piece moves away from the fixed shaft, so that the fixed shaft is separated from the clamping groove. The utility model has the advantages that due to the design of the clamping piece, the circular blade can be disassembled by only shifting the push rod without rotating the screw.

Description

Technical Field

[0001] The utility model relates to a circular knife, in particular to a circular knife which can be quickly disassembled. Background Art

[0002] Circular knives are often used to cut paper or fabrics. Compared with ordinary scissors, circular knives can keep the cut surface smoother and are easier to adjust the cut lines. Users can adjust the direction of the circular knife at will to cut arcs and other curves.

[0003] Nowadays, most circular knives are screwed to a handle. When the blade needs to be replaced, the screw needs to be unscrewed, which may cause injury. In addition, in order to see the direction of the blade more clearly when using a circular knife, the user will turn the blade side toward himself. However, most current circular knives are used by right-handed people. If a left-handed person uses it, he often cannot see the blade, which can easily cause danger.

[0004] In view of this, proposing a better improvement plan is an urgent problem to be solved in the industry. Utility Model Content

[0005] The main purpose of the utility model is to provide a quick-disassembly circular knife, which is used to solve the problem that when replacing the blade, the screw must be unscrewed to replace it, and the problem that left-handed people often cannot see the blade.

[0006] To achieve the above-mentioned purpose, the quick-disassembly circular knife of the utility model has the following features:

[0007] a housing;

[0008] a circular blade disposed on one side of the housing and capable of selectively protruding from the housing;

[0009] a fixed shaft, which penetrates the circular blade and the housing, and the circular blade is disposed on the fixed shaft;

[0010] A card fixture is disposed in the housing and has:

[0011] A slot located at one end of the fastening member, and the fixed shaft can be fastened in the slot;

[0012] At least one push rod is located on one side of the clamping member, protrudes outward from the surface of the clamping member, and penetrates the shell; when the push rod is pushed away from the fixed shaft, the clamping member moves away from the fixed shaft to make the fixed shaft disengage from the slot.

[0013] As described above, the quick-disassembly circular knife, wherein:

[0014] The housing further comprises:

[0015] Two receiving grooves are arranged on two opposite sides of the housing, and the circular blade can be arranged in one of the receiving grooves;

[0016] The card firmware has:

[0017] The two push rods are respectively located on two opposite sides of the clamping member, protrude outward from the surface of the clamping member, and penetrate the shell.

[0018] The quick-release circular knife as described above further has the following features:

[0019] A swinging member is disposed in the housing and has:

[0020] a groove, in which the clamping member is disposed and can swing along with the swinging member;

[0021] a protrusion, which is disposed on one side of the swinging member and protrudes from one side of the housing;

[0022] The housing further comprises:

[0023] A rotating shaft is arranged on the inner surface of the housing and is located on the other side of the protrusion relative to the housing, and the swinging member is pivotally arranged on the rotating shaft so that the swinging member can swing around the rotating shaft as the axis;

[0024] When the quick-detachable circular knife is located at a knife-retracting position, the swinging member swings to the corresponding knife-retracting position, so that the circular knife blade is disposed on one side of the housing and does not protrude from the housing;

[0025] When the quick-detachable circular knife is located at a knife-out position, the swinging member swings to the corresponding knife-out position, so that the circular blade protrudes from the housing.

[0026] As described above, the quick-disassembly circular knife, wherein:

[0027] The swing member has:

[0028] A fixed body, which is disposed on one side of the swinging member and is located on the same side as the protrusion;

[0029] The housing has:

[0030] A platform is arranged on the inner surface of the shell; when the swinging member swings to the knife-out position, the fixed body is located on the platform and is restricted by the platform and cannot swing back to the original position.

[0031] The quick-release circular knife as described above further has the following features:

[0032] A button is arranged on one side of the shell, and when the swinging member swings to the knife-out position, the button abuts against the fixed body; when the button moves toward the fixed body, the fixed body can be pushed away from the platform.

[0033] The quick-release circular knife as described above further has the following features:

[0034] An elastic member has two ends respectively connected to the swing member and the inner surface of the housing and tends to pull the swing member to the knife-retracting position.

[0035] The advantage of the utility model lies in the design of the fastening piece. The circular blade can be removed by simply moving the push rod without rotating the screw. In addition, the receiving grooves on both sides of the shell, the two push rods penetrating the shell, and the bumps and buttons on one side of the shell make it convenient for both left-handed and right-handed people to use the quick removal of the circular blade without the situation of not being able to see the circular blade or press the bumps and buttons. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a three-dimensional schematic diagram of the utility model in a knife-retracting position;

[0037] Figure 2 It is a three-dimensional schematic diagram of the utility model at another angle at the knife-retracting position;

[0038] Figure 3 It is an exploded schematic diagram of the utility model;

[0039] Figure 4 It is an exploded schematic diagram of the utility model from another angle;

[0040] Figure 5 It is a cross-sectional schematic diagram of the utility model at the knife-retracting position;

[0041] Figure 6 It is a cross-sectional schematic diagram of another angle of the utility model at the knife-retracting position;

[0042] Figure 7 For the utility model Figure 1 Schematic diagram of the cross section of the AA cutting line;

[0043] Figure 8 It is a three-dimensional schematic diagram of the utility model in a knife-out state;

[0044] Fig. 9 It is a three-dimensional schematic diagram of the utility model in another angle in the knife-out state;

[0045] Fig.10 It is a cross-sectional schematic diagram of the utility model at the knife-out position;

[0046] Fig.11 It is a cross-sectional schematic diagram of the utility model at a knife unloading position;

[0047] Fig.12 The utility model is a schematic diagram of the operation of removing a circular blade. DETAILED DESCRIPTION

[0048] Please refer to Figures 1 to 4 The utility model provides a quick-disassembly circular knife, which comprises a circular blade 10 , a housing 20 , a fixed shaft 30 , a clamping member 40 , a swinging member 50 , a button 60 , and an elastic member 70 .

[0049] Please refer to Figures 5 to 7 The circular blade 10 is accommodated in one side of the housing 20 and can selectively protrude from the housing 20. The housing 20 has two accommodating grooves 21, a rotating shaft 22, and a platform 23. The two accommodating grooves 21 are arranged on two opposite sides of the housing 20, and the circular blade 10 can be arranged in one of the accommodating grooves 21. The rotating shaft 22 and the platform 23 are both arranged on the inner surface of the housing 20.

[0050] The fixed shaft 30 penetrates the circular blade 10 and the housing 20, and the circular blade 10 is disposed on the fixed shaft 30. The clamping member 40 is disposed in the housing 20, and has a slot 41 and at least one push rod 42. The slot 41 is located at one end of the clamping member 40, and the fixed shaft 30 can be clamped in the slot 41. The push rod 42 is located on one side of the clamping member 40. In this embodiment, the clamping member 40 has two push rods 42, which are respectively located on two opposite sides of the clamping member 40, and protrude outward from the surface of the clamping member 40 and penetrate the housing 20. When the push rod 42 is pushed away from the fixed shaft 30, the clamping member 40 will move away from the fixed shaft 30 to make the fixed shaft 30 disengage from the slot 41.

[0051] The swinging member 50 is disposed in the housing 20 and is pivotally disposed on the rotating shaft 22 so that the swinging member 50 can swing around the rotating shaft 22. The swinging member 50 has a groove 51, a protrusion 52, and a fixing body 53. The clamping member 40 is disposed in the groove 51 so that the clamping member 40 can swing along with the swinging of the swinging member 50. The protrusion 52 is disposed on one side of the swinging member 50 and is located on two opposite sides of the rotating shaft 22 and protrudes from one side of the housing 20. Thus, when the user moves the protrusion 52 from the outside of the housing 20, the swinging member 50 can swing along with the movement of the protrusion 52. The fixing body 53 is disposed on one side of the swinging member 50 and is located on the same side as the protrusion 52. When the swinging member 50 swings around the rotating shaft 22, the fixing body 53 can be clamped on the platform 23 of the housing 20.

[0052] The quick-release circular cutter has a knife-retracting position, a knife-exiting position, and a knife-unloading position. When the quick-release circular cutter is in the knife-retracting position, the circular blade 10 is located in the receiving groove 21 and does not protrude from the housing 20. Please refer to Figures 8 to 10 When the quick-release circular knife is in the knife-out position, the circular blade 10 protrudes from the housing 20, and the fixing body 53 is fixed on the platform 23 of the housing, so that the swing member 50 cannot swing. Fig.11 and Fig.12 When the quick-disassembly circular blade is at the blade removal position, the clamping member 40 moves away from the fixed shaft 30 , so that the fixed shaft 30 is disengaged from the clamping groove 41 of the clamping member 40 , and the fixed shaft 30 and the circular blade 10 can be removed from the housing 20 .

[0053] The button 60 is disposed on one side of the housing 20, and when the swinging member 50 swings to the knife-out position, the button 60 abuts against the fixed body 53. When the button 60 moves toward the fixed body 53, it can push the fixed body 53 away from the platform 23, so that the swinging member 50 is not restricted by the platform 23 and cannot swing. In this embodiment, the protrusion 52 and the button 60 are both disposed on one side of the housing 20, whereby the user can touch the protrusion 52 and the button 60 regardless of which receiving slot 21 the circular blade 10 is placed in. The two ends of the elastic member 70 are respectively connected to the inner surface of the swinging member 50 and the housing 20, and tend to pull the swinging member 50 to the knife-retracting position.

[0054] When using the quick-detachable circular knife, first push the protrusion 52 located on the side edge of the shell 20 to swing the swing member 50 to the knife-out position, allowing the circular blade 10 to protrude from the shell 20. At this time, the fixed body 53 will be fixed on the platform 23 of the shell 20. When the circular blade 10 is used for cutting, the swing member 50 will not swing and cause the circular blade 10 to return to the knife-retracting position.

[0055] To return the circular blade 10 to the retracted position, it is necessary to press the button 60 located on one side of the shell 20. The button 60 will push the fixed body 53 away from the platform 23 so that the swing member 50 is not restricted by the platform 23. At the same time, the elastic member 70 will pull the swing member 50 to the retracted position.

[0056] If you want to replace the circular blade 10, the quick-disassembly circular blade must first be in the retracted position, and then the two push rods 42 are pulled to move the push rods 42 away from the fixed shaft 30, thereby disengaging the fixed shaft 30 from the slot 41 of the fastening member 40. When the fixed shaft 30 is disengaged from the slot 41 of the fastening member 40, the fixed shaft 30 and the circular blade 10 can be disengaged from the housing 20, thereby replacing the circular blade 10.

[0057] The advantage of the present invention lies in the design of the fastening member 40. The circular blade 10 can be removed by simply moving the push rod 42 without rotating the screw. In addition, the receiving grooves 21 on both sides of the housing 20, the two push rods 42 penetrating the housing 20, and the protrusions 52 and the button 60 on one side of the housing 20 make it easy for both left-handed and right-handed people to quickly remove the circular blade without the situation of not being able to see the circular blade 10 or press the protrusions 52 and the button 60.

[0058] The above description is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A quick-disassembly circular knife, characterized in that: have: a housing; a circular blade disposed on one side of the housing and capable of selectively protruding from the housing; a fixed shaft, which penetrates the circular blade and the housing, and the circular blade is disposed on the fixed shaft; A card fixture is disposed in the housing and has: A slot located at one end of the fastening member, and the fixed shaft can be fastened in the slot; At least one push rod is located on one side of the clamping member, protrudes outward from the surface of the clamping member, and penetrates the shell; when the push rod is pushed away from the fixed shaft, the clamping member moves away from the fixed shaft to make the fixed shaft disengage from the slot.

2. The quick-release circular knife according to claim 1, characterized in that: The housing also has: Two receiving grooves are arranged on two opposite sides of the housing, and the circular blade can be arranged in one of the receiving grooves; The card firmware has: The two push rods are respectively located on two opposite sides of the clamping member, protrude outward from the surface of the clamping member, and penetrate the shell.

3. The quick-release circular knife according to claim 1 or 2, characterized in that: Also features: A swinging member is disposed in the housing and has: a groove, in which the clamping member is disposed and can swing along with the swinging member; a protrusion, which is disposed on one side of the swinging member and protrudes from one side of the housing; The housing also has: A rotating shaft is arranged on the inner surface of the housing and is located on the other side of the protrusion relative to the housing, and the swinging member is pivotally arranged on the rotating shaft so that the swinging member can swing around the rotating shaft as the axis; When the quick-detachable circular knife is located at a knife-retracting position, the swinging member swings to the corresponding knife-retracting position, so that the circular knife blade is disposed on one side of the housing and does not protrude from the housing; When the quick-detachable circular knife is located at a knife-out position, the swinging member swings to the corresponding knife-out position, so that the circular blade protrudes from the housing.

4. The quick-release circular knife according to claim 3, characterized in that: The swing member has: A fixed body, which is disposed on one side of the swinging member and is located on the same side as the protrusion; The housing has: A platform is arranged on the inner surface of the shell; when the swinging member swings to the knife-out position, the fixed body is located on the platform and is restricted by the platform and cannot swing back to the original position.

5. The quick-release circular knife according to claim 4, characterized in that: Also features: A button is arranged on one side of the shell, and when the swinging member swings to the knife-out position, the button abuts against the fixed body; when the button moves toward the fixed body, the fixed body can be pushed away from the platform.

6. The quick-release circular knife according to claim 4, characterized in that: Also features: An elastic member has two ends respectively connected to the swing member and the inner surface of the shell, and tends to pull the swing member to the knife-retracting position.

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