Scissor structure for improving shearing performance

Abstract

The utility model discloses a kind of shears structure of improving shearing performance, including first shear piece, second shear piece and connecting pin shaft, the first shear piece and second shear piece are rotatably installed on the connecting pin shaft, further including ball, spring and auxiliary sleeve, first blade edge is provided on the first shear piece, second blade edge is provided on the second shear piece, the auxiliary sleeve is set in first shear piece, the spring is set in the auxiliary sleeve, the both ends of the ball respectively resist spring and second shear piece, first blade edge and ball are located at the both sides of connecting pin shaft respectively.The structure has the following beneficial effects: by elastically installing a ball between two shear pieces, the problem that shear piece is raised and occlusion is not tight when shearing is avoided, the contact area when shearing is also reduced, friction is reduced, the effect of more labor-saving opening and closing is achieved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tools, and in particular to a scissor structure that improves shearing performance. Background Technology

[0002] Scissors are a commonly used tool. The structure of commonly used scissors can be seen in the patent publications. Currently, scissors mainly consist of two blades and a pin. The two blades are rotatably mounted on the pin, and each blade can rotate around the pin. This type of scissors works by applying oil and striking the inner surface of the blades, making the two ends higher and the middle lower, forming a concave shape similar to concave grinding scissors. This makes the blades mesh more tightly when cutting. However, this type of scissors has the following problem: if the blades are not polished with oil to create the concave shape, the blades will curl upwards when cutting, and the blades will not mesh tightly. However, polishing with oil and creating the concave shape not only increases the process but also makes the purpose of flat grinding scissors meaningless. It would be better to directly perform concave grinding. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a scissor structure that improves shearing performance. By elastically installing a ball bearing between the two shear blades, the problem of the blades warping upwards and not meshing tightly during shearing is avoided. At the same time, the contact area during shearing is reduced, friction is lowered, and the opening and closing becomes more effortless.

[0004] The technical solution adopted by this utility model is as follows:

[0005] A scissor structure for improving cutting performance includes a first scissor blade, a second scissor blade, and a connecting pin. Both the first and second scissor blades are rotatably mounted on the connecting pin. The structure also includes a ball bearing, a spring, and an auxiliary sleeve. The first scissor blade has a first cutting edge, and the second scissor blade has a second cutting edge. The auxiliary sleeve is disposed inside the first scissor blade, and the spring is disposed inside the auxiliary sleeve. The two ends of the ball bearing abut against the spring and the second scissor blade, respectively. The first cutting edge and the ball bearing are located on opposite sides of the connecting pin.

[0006] In this specific scissor structure, the first and second shear blades are still rotatably mounted on the connecting pin, and each shear blade is mutually engaged through its own plane. To achieve stable planar engagement between the first and second shear blades, an auxiliary sleeve is provided on the first shear blade. A ball bearing is elastically mounted within the auxiliary sleeve using a spring. The presence of the ball bearing creates an elastic support point between the shear blade root and the shear shaft (i.e., the connecting pin) during cutting, causing the blade edge above the shear shaft to move inwards. This reduces the shear blade warping and loose engagement, while also reducing the contact area during cutting, lowering friction, and achieving a more effortless opening and closing effect.

[0007] In summary, this type of scissor structure avoids the problem of the scissors tilting upwards and not meshing tightly during cutting by elastically installing a ball between the two scissor blades. At the same time, it also reduces the contact area during cutting, reduces friction, and achieves the effect of opening and closing with less effort.

[0008] Optionally, the first shear blade has an installation hole, and the auxiliary sleeve is disposed in the installation hole.

[0009] Optionally, one end of the first scissor blade is connected to a first handle, and one end of the second scissor blade is connected to a second handle.

[0010] Optionally, the first grip or the second grip may be provided with an arc-shaped portion.

[0011] Optionally, the first grip is inserted and engaged with the first scissor blade, and the second grip is inserted and engaged with the second scissor blade.

[0012] Optionally, the first grip and the second grip have the same shape and size.

[0013] Optionally, the first and second shears are perpendicular to the connecting pin.

[0014] Optionally, the first and second scissors have the same shape and size.

[0015] The beneficial effects of this utility model are: by elastically installing a ball bearing between the two shear blades, the problem of the shear blades curling up and not meshing tightly during shearing is avoided. At the same time, the contact area during shearing is reduced, the friction is reduced, and the opening and closing is more labor-saving. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a simplified diagram illustrating the working structure of the first and second clippers;

[0018] Figure 2 This is a schematic diagram showing the installation position of the auxiliary sleeve on the first shear blade;

[0019] Figure 3 yes Figure 2 A simplified enlarged diagram of point A in the middle;

[0020] Figure 4 This is a schematic diagram showing the position of the spring inside the auxiliary sleeve.

[0021] The figures are labeled as follows: 1. First shear blade; 101. First cutting edge; 102. Mounting hole; 2. Second shear blade; 201. Second cutting edge; 3. Connecting pin; 4. Auxiliary sleeve; 5. First grip; 6. Second grip; 7. Arc part; 8. Ball bearing; 9. Spring. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0025] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, a scissor structure for improving cutting performance includes a first scissor blade 1, a second scissor blade 2, and a connecting pin 3. Both the first scissor blade 1 and the second scissor blade 2 are rotatably mounted on the connecting pin 3. The structure also includes a ball bearing 8, a spring 9, and an auxiliary sleeve 4. The first scissor blade 1 is provided with a first cutting edge 101, and the second scissor blade 2 is provided with a second cutting edge 201. The auxiliary sleeve 4 is disposed inside the first scissor blade 1, and the spring 9 is disposed inside the auxiliary sleeve 4. The two ends of the ball bearing 8 abut against the spring 9 and the second scissor blade 2, respectively. The first cutting edge 101 and the ball bearing 8 are located on both sides of the connecting pin 3.

[0026] In this specific scissor structure, the first scissor blade 1 and the second scissor blade 2 are still rotatably mounted on the connecting pin 3, and the first scissor blade 1 and the second scissor blade 2 are mutually fitted through their respective planes. In order to achieve a stable plane fit between the first scissor blade 1 and the second scissor blade 2, an auxiliary sleeve 4 is set on the first scissor blade 1. A spring 9 is set in the auxiliary sleeve 4 to elastically install a ball bearing 8. The presence of the ball bearing 8 creates an elastic support point between the scissor blade root and the scissor shaft (i.e., the connecting pin 3) during cutting, which supports outwards, thereby causing the cutting edge above the scissor shaft to move inwards, reducing the problem of the scissor blades tilting upwards and not meshing tightly. At the same time, it also reduces the contact area during cutting, reduces friction, and achieves the effect of easier opening and closing.

[0027] In summary, this type of scissor structure avoids the problem of the scissors tilting upwards and not meshing tightly during cutting by elastically installing a ball bearing 8 between the two scissor blades. At the same time, it also reduces the contact area during cutting, reduces friction, and achieves the effect of opening and closing with less effort.

[0028] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, the first shear blade 1 has an installation hole 102, and the auxiliary sleeve 4 is disposed in the installation hole 102.

[0029] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, one end of the first shear blade 1 is connected to the first handle 5, and one end of the second shear blade 2 is connected to the second handle 6.

[0030] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, the first grip 5 or the second grip 6 is provided with an arc-shaped part 7.

[0031] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, the first grip 5 is inserted and engaged with the first shear blade 1, and the second grip 6 is inserted and engaged with the second shear blade 2.

[0032] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, the first grip 5 and the second grip 6 have the same shape and size.

[0033] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, the first shear blade 1 and the second shear blade 2 are perpendicular to the connecting pin 3.

[0034] As attached Figure 1 Appendix Figure 2 Appendix Figure 3 and appendix Figure 4 As shown, the first scissor piece 1 and the second scissor piece 2 have the same shape and size.

[0035] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A scissor structure for improving shearing performance, comprising a first shear blade, a second shear blade, and a connecting pin, wherein both the first and second shear blades are rotatably mounted on the connecting pin, characterized in that, It also includes a ball bearing, a spring, and an auxiliary sleeve. The first shear blade is provided with a first cutting edge, and the second shear blade is provided with a second cutting edge. The auxiliary sleeve is disposed inside the first shear blade, and the spring is disposed inside the auxiliary sleeve. The two ends of the ball bearing abut against the spring and the second shear blade, respectively. The first cutting edge and the ball bearing are located on both sides of the connecting pin.

2. The shear structure for improving shearing performance according to claim 1, characterized in that, The first shear blade has an installation hole, and the auxiliary sleeve is disposed in the installation hole.

3. The shear structure for improving shearing performance according to claim 1, characterized in that, One end of the first shear blade is connected to a first handle, and one end of the second shear blade is connected to a second handle.

4. The shear structure for improving shearing performance according to claim 3, characterized in that, The first or second grip is provided with an arc-shaped part.

5. A shear structure for improving shearing performance according to claim 3, characterized in that, The first grip is inserted and engaged with the first scissor blade, and the second grip is inserted and engaged with the second scissor blade.

6. A shear structure for improving shearing performance according to claim 3, characterized in that, The first grip and the second grip are the same in shape and size.

7. The shear structure for improving shearing performance according to claim 1, characterized in that, The first and second shear blades are perpendicular to the connecting pin.

8. A shear structure for improving shearing performance according to claim 1, characterized in that, The first and second scissors are the same size and shape.

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