Art knife capable of preventing blade from being broken

Abstract

The utility model relates to the field of art knives, in particular to an art knife capable of preventing a blade from being broken. According to the art knife capable of preventing the blade from being broken, the blade can be limited after being moved out by a section, the blade is prevented from being broken due to the fact that the blade is moved out too long, the service life of the blade is prolonged, and using convenience is improved. An art knife capable of preventing a blade from being broken comprises a shell, a baffle, a push plate, the blade and the like, the baffle is clamped to the rear portion of the shell, the push plate is clamped to the shell in a sliding mode, the blade is clamped to the push plate, and the blade makes contact with the shell. According to the device, the blade moves, so that the rolling wheel rotates, then the rotating column and the first gear are driven to rotate, the second gear rotates, the connecting frame is driven to rotate, and the clamping plate rotates to be tightly attached to the blade for limitation, so that the blade can be limited after being moved out by a section, and the blade is prevented from being broken due to the fact that the blade is moved out too long; the service life of the blade is prolonged, and the use convenience is improved.

Description

Technical Field

[0001] The utility model relates to the field of utility knives, in particular to a utility knife with a function of preventing a blade from breaking. Background Art

[0002] A utility knife is a widely used tool used for fine cutting, carving, and cropping. It usually consists of an adjustable plastic or metal handle and replaceable blades. The blades of a utility knife are usually flat and can be replaced so that the user can use blades of different lengths and sharpnesses as needed.

[0003] When using existing utility knives, the blade is usually pushed out by hand and then used. The current utility knives do not have an anti-breakage function. After the blade is moved out a certain distance, the blade cannot be effectively limited. It is easy for the blade to be moved out too long. When using a long blade for cutting, it is easy to cause the blade to break, which is inconvenient to use.

[0004] Therefore, it is necessary to design a utility knife that can limit the blade after the blade is moved out for a certain distance to prevent the blade from breaking due to being moved out for too long, thereby extending the service life of the blade and improving the convenience of use. Utility Model Content

[0005] In order to overcome the shortcomings of the current utility knife that the blade does not have the anti-breaking function and cannot be effectively limited after the blade is moved out a certain distance, which easily causes the blade to be moved out too long. When using a longer blade for cutting, it is easy to cause the blade to break, which is inconvenient to use. The utility knife provides a utility knife with a blade-breaking prevention function that can limit the blade after the blade is moved out a certain distance, thereby preventing the blade from being broken due to excessive movement, extending the service life of the blade, and improving the convenience of use.

[0006] Technical solution: A utility knife with a function of preventing blade breakage, comprising a shell, a baffle, a push plate, a blade and an anti-breakage component. The baffle is clamped on the rear of the shell, a push plate is slidably clamped on the shell, the blade is clamped on the push plate, the blade is in contact with the shell, and an anti-breakage component is provided on the shell.

[0007] As an optimal technical solution of the present utility model, the anti-breakage component includes a rotating column, a roller, a first gear, a second gear, a connecting frame, a blocking plate and a torsion spring. The left front part of the shell is rotatably connected to the rotating column, the upper part of the rotating column is connected to the roller, the lower part of the rotating column is connected to the first gear, the left part of the shell is rotatably connected to the second gear, the second gear and the first gear are engaged with each other, the upper rear side of the second gear is connected to the connecting frame, the rear part of the connecting frame is rotatably connected to the blocking plate, and two upper and lower torsion springs are connected between the blocking plate and the connecting frame.

[0008] As a preferred technical solution of the present invention, the roller is made of rubber and has good wear resistance.

[0009] As a preferred technical solution of the present invention, the diameter of the first gear is smaller than the diameter of the second gear.

[0010] As a preferred technical solution of the present invention, a connecting plate is also included, and two upper and lower connecting plates are connected to the right front side of the shell.

[0011] As a preferred technical solution of the present invention, the connecting plates are all L-shaped.

[0012] The beneficial effects of the present invention are as follows: 1. The present invention causes the roller to rotate by moving the blade, thereby driving the rotating column and the first gear to rotate, causing the second gear to rotate, and then driving the connecting frame to rotate, so that the positioning plate rotates close to the blade to restrict it, thereby limiting the blade after the blade is moved out for a certain distance, preventing the blade from being broken due to being moved out for too long, extending the service life of the blade, and improving the convenience of use.

[0013] 2. When the blade breaks during use, the utility model can restrain the blade through the connecting plate, thereby preventing the blade from splashing when the blade breaks, protecting the safety of the user, reducing the risk of injury to the user, and improving the safety of use. 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 It is an exploded view of the three-dimensional structure of the utility model.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure numbers: 1_housing, 2_baffle, 3_push plate, 4_blade, 5_rotating column, 6_roller, 7_first gear, 8_second gear, 9_connecting frame, 10_locking plate, 11_torsion spring, 12_connecting plate. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] A utility knife having a feature of preventing the blade from breaking, such as Figures 1-4As shown, it includes a shell 1, a baffle 2, a push plate 3, a blade 4, a rotating column 5, a roller 6, a first gear 7, a second gear 8, a connecting frame 9, a positioning plate 10, a torsion spring 11 and a connecting plate 12. The rear part of the shell 1 is clamped with the baffle 2, the shell 1 is slidably clamped with the push plate 3, the push plate 3 is clamped with the blade 4, the blade 4 is in contact with the shell 1, the left front part of the shell 1 is rotatably connected to the rotating column 5, the upper part of the rotating column 5 is connected to the roller 6, the roller 6 is made of rubber and has good wear resistance. The lower part of the column 5 is connected to the first gear 7, and the left part of the shell 1 is rotatably connected to the second gear 8. The second gear 8 and the first gear 7 are meshed with each other. The diameter of the first gear 7 is smaller than the diameter of the second gear 8. The upper and rear sides of the second gear 8 are connected to the connecting frame 9, and the rear side of the connecting frame 9 is rotatably connected to the blocking plate 10. Two upper and lower torsion springs 11 are connected between the blocking plate 10 and the connecting frame 9. The upper and lower connecting plates 12 are connected to the right front side of the shell 1 to prevent the blade 4 from splashing. The connecting plates 12 are all L-shaped.

[0021] When the utility knife is needed, the device can be used, brought to the place where it is needed, and then the shell 1 is held to pick up the device, and then the push plate 3 is pushed by hand to move the blade 4. During the movement, the blade 4 contacts the roller 6, causing the roller 6 to rotate. The roller 6 is made of rubber and has good wear resistance, thereby driving the rotating column 5 to rotate, causing the first gear 7 to rotate, and the first gear 7 and the second gear 8 to mesh with each other, causing the second gear 8 to rotate. The diameter of the first gear 7 is smaller than that of the second gear 8, thereby driving the connecting frame 9, the positioning plate 10 and the torsion spring 11 to rotate, so that the positioning plate 10 contacts the blade 4, causing the positioning plate 10 to rotate and close to the blade 4, and the torsion spring 11 is deformed, thereby limiting the blade 4, causing the push plate 3 to stop moving and be fixed with the shell 1. Then the device can be used, so that the blade 4 can be limited after it moves out a certain distance. The blade 4 is in the L-shaped L-shaped position, which can limit the blade 4 when it breaks, preventing the blade 4 from splashing, protecting the user's safety, reducing the risk of injury to the user, and improving the safety of use. After use, the push plate 3 is pushed in the opposite direction by hand to make the blade 4 move in the opposite direction, thereby making the roller 6, the rotating column 5 and the first gear 7 rotate in the opposite direction, the first gear 7 and the second gear 8 mesh with each other, making the second gear 8 rotate in the opposite direction, thereby driving the connecting frame 9, the locking plate 10 and the torsion spring 11 to rotate and reset in the opposite direction, so that the locking plate 10 is disengaged from the blade 4, the torsion spring 11 rotates and recovers, and the locking plate 10 rotates and resets, preventing the push plate 3 from moving out through the baffle 2, and then the blade 4 can be retracted.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A utility knife with a feature to prevent the blade from breaking, characterized by: The invention comprises a shell (1), a baffle (2), a push plate (3), a blade (4) and an anti-breaking component. The baffle (2) is clamped on the rear of the shell (1), the push plate (3) is slidably clamped on the shell (1), the blade (4) is clamped on the push plate (3), the blade (4) is in contact with the shell (1), and the shell (1) is provided with an anti-breaking component.

2. A utility knife with a feature to prevent blade breakage according to claim 1, characterized in that: The anti-break component comprises a rotating column (5), a roller (6), a first gear (7), a second gear (8), a connecting frame (9), a blocking plate (10) and a torsion spring (11). The left front portion of the housing (1) is rotatably connected to the rotating column (5), the upper portion of the rotating column (5) is connected to the roller (6), the lower portion of the rotating column (5) is connected to the first gear (7), the left portion of the housing (1) is rotatably connected to the second gear (8), the second gear (8) and the first gear (7) are meshed with each other, the upper rear side of the second gear (8) is connected to the connecting frame (9), the rear portion of the connecting frame (9) is rotatably connected to the blocking plate (10), and two upper and lower torsion springs (11) are connected between the blocking plate (10) and the connecting frame (9).

3. A utility knife with a feature to prevent blade breakage according to claim 2, characterized in that: The roller (6) is made of rubber.

4. A utility knife with a feature to prevent blade breakage according to claim 3, characterized in that: The diameter of the first gear (7) is smaller than the diameter of the second gear (8).

5. A utility knife with a feature to prevent blade breakage according to claim 4, characterized in that: It also includes a connecting plate (12), and the right front side of the housing (1) is connected to two upper and lower connecting plates (12).

6. A utility knife with a feature to prevent blade breakage according to claim 5, characterized in that: The connecting plates (12) are all L-shaped.

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