Improved pusher lower base cover for a utility knife

Abstract

The utility model discloses an improved push piece lower bottom cover for art knife belongs to the technical field of continuous art knife, is formed through integral injection molding by base sheet, tab and guide connecting portion, the base sheet is the elastic sheet of strip, and the one end of base sheet is provided with the upwardly cocked paddle, the tab fixedly connected at the bottom of base sheet, the guide connecting portion fixedly connected at the top of base sheet, and one side of guide connecting portion is provided with the limit post and limit buckle, the utility model discloses through integral injection molding of overall structure, control structure error is about 0.01mm, make tab can accurately be clamped into single blade, can guarantee that push bottom cover slides stably in art knife under the guide support of guide connecting portion, and the limit between base sheet and blade can be removed by the paddle, and the use effect is good, solves the problem that two blade is easy to take out with push piece lower bottom cover.

Description

Technical Field

[0001] This utility model belongs to the field of continuous-fire utility knife technology, and in particular relates to an improved push-type bottom cover for a utility knife. Background Technology

[0002] A multi-blade utility knife is a high-efficiency tool with multiple built-in blades that can be continuously replaced. It is mainly used for cutting paper, packaging materials, wallpaper, etc. Its core feature is that it achieves rapid blade switching through a mechanical structure, reducing the frequency of manual blade changing and improving work efficiency. The push-button bottom cover slides in sections on the utility knife shell, holding the blades in place and driving them to slide.

[0003] Currently, due to the uneven hardness of the steel after the stamping process, with an error of about 0.1mm, the bottom cover of the push part is prone to carrying out two blades. Utility Model Content

[0004] The purpose of this utility model is to provide an improved push-type bottom cover for utility knives in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an improved push-type bottom cover for utility knives, which is integrally injection molded from a base plate, a protrusion, and a guide connecting part;

[0006] The base sheet is a long strip of elastic sheet, and one end of the base sheet is provided with an upward-curving paddle.

[0007] The protrusion is fixedly connected to the bottom of the base plate;

[0008] The guide connection is fixedly connected to the top of the base plate, and a limit post and a limit buckle are provided on one side of the guide connection.

[0009] As a further description of the above technical solution:

[0010] The protrusion has rounded corners on both sides.

[0011] As a further description of the above technical solution:

[0012] The base plate has a support platform at its bottom, and the end face of the support platform coincides with the end face of the protrusion.

[0013] As a further description of the above technical solution:

[0014] The base plate has multiple hollow holes.

[0015] As a further description of the above technical solution:

[0016] The top of the guide connector has multiple slots.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0018] In this invention, the integral structure is injection molded, and the structural error is controlled to be around 0.01mm, so that the protrusion can be accurately inserted into the single blade. Under the guiding support of the guide connection part, the bottom cover can be pushed to slide stably in the utility knife. The limit between the base piece and the blade can be released by turning the lever. The effect is good and solves the problem that the bottom cover of the push part can easily bring out two blades. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overall structure of the bottom cover of an improved utility knife pusher. Figure 1 .

[0020] Figure 2 A schematic diagram of the overall structure of the bottom cover of an improved utility knife pusher. Figure 2 .

[0021] Figure 3 This is a front view of the bottom cover of an improved utility knife pusher.

[0022] Figure 4 This is a side view of the bottom cover of an improved utility knife pusher.

[0023] Legend:

[0024] 1. Base plate; 2. Protrusion; 3. Guide connection part; 4. Paddle; 5. Limiting post; 6. Limiting buckle; 7. Rounded corner; 8. Support platform; 9. Hole; 10. Slot. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution: an improved push-type bottom cover for utility knives, which is integrally injection molded from a base plate 1, a protrusion 2 and a guide connecting part 3;

[0027] The base sheet 1 is a long strip of elastic sheet, and one end of the base sheet 1 is provided with an upward-curving paddle 4;

[0028] The protrusion 2 is fixedly connected to the bottom of the base plate 1;

[0029] The guide connection part 3 is fixedly connected to the top of the base piece 1, and a limit post 5 and a limit buckle 6 are provided on one side of the guide connection part 3.

[0030] The protrusion 2 has rounded corners 7 on its opposite sides, which guide the edge of the blade insertion hole, so that the protrusion 2 can be smoothly and accurately inserted into the blade insertion hole.

[0031] The base plate 1 is provided with a support platform 8 at its bottom. The end face of the support platform 8 coincides with the end face of the protrusion 2, which has a limiting and supporting effect on the sliding of the base plate 1.

[0032] The base plate 1 has multiple hollow holes 9, which makes the sound of the utility knife being pushed and pulled more crisp and clear.

[0033] The top of the guide connection part 3 is provided with multiple slots 10 to facilitate interlocking with the top cover used for pushing and pulling.

[0034] Working principle: First, the base plate 1 is inserted into the utility knife. The protrusion 2 and support platform 8 of the base plate 1 abut against the surface of the blade. The two sides of the guide connecting part 3 abut against the sliding groove of the utility knife. The limiting post 5 is inserted into the serrated groove, and the limiting buckle 6 holds the surface of the utility knife. Next, the top cover for pushing and pulling is inserted into the slot 10. Pushing the top cover causes the base plate 1 to slide. When the protrusion 2 moves to the insertion hole of the uppermost blade, the rounded corner 7 of the base plate 1 guides the edge of the insertion hole of the blade under its own elasticity, so that the protrusion 2 can be smoothly and accurately inserted into the insertion hole of the blade. Finally, pushing the top cover causes the base plate 1 to slide, and the blade is pushed out of the end of the utility knife for use. If the blade needs to be replaced, simply push the lever 4 to deform the base plate 1, and the protrusion 2 is pulled out from the insertion hole of the blade to release the restriction of the blade and take out the blade.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An improved push-type bottom cover for a utility knife, characterized in that: It is integrally injection molded from a base sheet (1), a protrusion (2) and a guide connection part (3); The base sheet (1) is a long strip of elastic sheet, and one end of the base sheet (1) is provided with an upward-curving paddle (4); The protrusion (2) is fixedly connected to the bottom of the base plate (1); The guide connection part (3) is fixedly connected to the top of the base plate (1), and a limit post (5) and a limit buckle (6) are provided on one side of the guide connection part (3).

2. The improved push-piece bottom cover for a utility knife according to claim 1, characterized in that, The protrusion (2) has rounded corners (7) on its opposite sides.

3. The improved push-piece bottom cover for a utility knife according to claim 1, characterized in that, The base plate (1) is provided with a support platform (8) at its bottom, and the end face of the support platform (8) coincides with the end face of the protrusion (2).

4. The improved push-piece bottom cover for a utility knife according to claim 1, characterized in that, The base plate (1) has multiple hollow holes (9).

5. The improved push-piece bottom cover for a utility knife according to claim 1, characterized in that, The top of the guide connection part (3) is provided with multiple slots (10).

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