Shaving razor blade

Abstract

A razor blade, by designing its teeth as both closed and open, can more effectively capture and cut hair. The closed-tooth design ensures that the hair is cut inside the blade, reducing the possibility of hair splattering and improving safety during use. The hair inlet formed between the open-tooth design and the blade wall guides the hair smoothly into the blade, making the cutting process smoother.

Description

Technical Field

[0001] This utility model relates to the field of hair cutting equipment technology, specifically to a razor blade. Background Technology

[0002] In the prior art, the two ends of the blade teeth on the razor blade are connected to the corresponding blade wall to form a closed cutting surface structure. Although this closed structure can cut hair, because the cutting surface is completely closed, the hair is easy to stick to the blade tooth wall during the cutting process and is not easy to enter the cutting groove for cutting. Summary of the Invention

[0003] In view of this, the present invention provides a razor blade.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A razor blade includes a blade body with two opposing blade walls and a cutting section disposed between the blade walls. The cutting section has a plurality of spaced-apart cutting teeth, including closed cutting teeth and open cutting teeth. The two ends of the closed cutting teeth are respectively connected to the corresponding blade wall and the cutting section. One end of the open cutting teeth is connected to the cutting section, and the other end of the open cutting teeth forms a hair inlet that communicates with the interior of the blade body between itself and the blade wall.

[0005] Preferably, the open cutting tooth has an open tooth body and a tooth tip, the tooth tip is disposed on the end of the open tooth body away from the shearing part, and the top of the tooth tip is provided with an inclined surface structure on the side away from the open tooth body.

[0006] Preferably, the closed cutting tooth has a blade wall connecting portion that contacts the blade wall, a shearing connecting portion that contacts the shearing portion, and a toothed protrusion disposed between the blade wall connecting portion and the shearing connecting portion. The two ends of the toothed protrusion are respectively connected to the blade wall connecting portion and the shearing connecting portion. The toothed protrusion is arranged in a C-shape. The shearing connecting portion has a horizontal cutting edge, and the toothed protrusion has an arc-shaped cutting edge. The horizontal cutting edge extends to the toothed protrusion and connects with the arc-shaped cutting edge. The vertical distance between the point where the horizontal cutting edge and the arc-shaped cutting edge meet and the end of the open cutting tooth away from the shearing portion is L, where L ≥ .

[0007] Preferably, the top end face of the shearing part is sunken to form a skin-fitting groove with a length less than the length of the shearing part, so that the end of the cutting tooth away from the center of the cutting part forms a protruding structure with a height higher than the wall of the skin-fitting groove.

[0008] Preferably, the skin-adhesive groove is provided and formed at the center of the top end face of the shearing part, extending towards the end of the cutting teeth away from the shearing part.

[0009] Preferably, the skin-adhesive groove includes a first skin-adhesive groove and a second skin-adhesive groove, and a raised rib with a height flush with the tip of the cutting tooth is provided between the first skin-adhesive groove and the second skin-adhesive groove, and the raised rib is arranged along the length direction of the shearing part.

[0010] Preferably, the thickness of the sheared portion after sinking is 0.08-0.3 mm.

[0011] The beneficial effects of this invention are as follows: by designing the blade teeth as both closed and open, it can more effectively capture and cut hair. The closed-tooth design ensures that the hair is cut inside the blade, reducing the possibility of hair splattering and improving safety during use. Meanwhile, the hair inlet formed between the open-tooth design and the blade wall guides the hair smoothly into the blade, making the cutting process smoother. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Appendix Figure 1 This is a schematic diagram of the design structure; Appendix Figure 2 For the appendix Figure 1 Top view; Appendix Figure 3 For the appendix Figure 2 Sectional view at point AA; Appendix Figure 4 This is a schematic diagram of another embodiment. Detailed Implementation

[0014] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] The present invention will now be further described with reference to the accompanying drawings.

[0016] This utility model provides the following technical solution: As attached Figure 1-4As shown, this utility model discloses a razor blade, including a blade body 1. The blade body 1 has two opposing blade walls 2 and a cutting section 3 disposed between the blade walls 2. The cutting section 3 has a plurality of spaced-apart cutting teeth 4. Each cutting tooth 4 includes closed cutting teeth 5 and open cutting teeth 6. The two ends of the closed cutting teeth 5 are respectively connected to the corresponding blade wall 2 and the cutting section 3. One end of the open cutting teeth 6 is connected to the cutting section 3, and the other end of the open cutting teeth 6 forms a hair inlet 7 between itself and the blade wall 2, communicating with the interior of the blade body 1. Specifically, in this design, by designing the cutting teeth as closed cutting teeth 5 and open cutting teeth 6, hair can be captured and cut more effectively. The design of the closed cutting teeth 5 ensures that the hair is cut inside the blade, reducing the possibility of hair splattering and improving safety during use. The hair inlet 7 formed between the open cutting teeth 6 and the blade wall 2 guides the hair smoothly into the interior of the blade, making the cutting process smoother.

[0017] Furthermore, the open blade 6 has an open blade body 8 and a blade tip 9. The blade tip 9 is located at the end of the open blade body 8 away from the shearing part 3, and a bevel structure 10 is provided on the side of the blade tip 9 away from the open blade body 8. Specifically, in this embodiment, the bevel structure 10 is designed to lift hair that is close to the skin and to guide the hair into the hair inlet 7 more easily.

[0018] Furthermore, the closed blade 5 has a blade wall connecting portion 12 that connects to the blade wall 2, a shearing connecting portion 13 that connects to the shearing portion 3, and a toothed protrusion 14 disposed between the blade wall connecting portion 12 and the shearing connecting portion 13. The two ends of the toothed protrusion 14 connect to the blade wall connecting portion 12 and the shearing connecting portion 13, respectively. The toothed protrusion has a C-shaped structure. The shearing connecting portion 13 has a horizontal cutting edge 15, and the toothed protrusion 14 has an arc-shaped cutting edge 16. The horizontal cutting edge 15 extends to the toothed protrusion 14 and connects with the arc-shaped cutting edge 16. The vertical distance between the point where the horizontal cutting edge 15 and the arc-shaped cutting edge 16 connects to the end of the open blade 6 away from the shearing portion 3 is L, where L≥0. Specifically, in this embodiment, L≥0, the closed blade contacts the skin first, followed by the open blade. Most of the force on the skin is absorbed by the closed blade, resulting in a better feel and higher safety.

[0019] Furthermore, the top end face of the cutting section 3 is recessed to form a skin-fitting groove 17 with a length less than the length of the cutting section 3, causing the end of the cutting tooth 4 away from the center of the cutting section to form a protruding structure with a height higher than the groove wall of the skin-fitting groove 17. Specifically, in this embodiment, the skin-fitting groove 17 improves the skin-fitting performance of the razor during use, allowing the blade to fit more closely to the skin surface, thereby improving shaving efficiency and comfort. Furthermore, the recessed outer surface of the cutting section is closer to the moving blade, resulting in shorter residual hair after cutting.

[0020] Reference Appendix Figure 4 The skin-fitting groove 17 is provided and formed at the center of the top end face of the cutting part 3, extending towards the end of the cutting teeth 4 away from the cutting part 3. Specifically, in this embodiment, the cutting part 3 has one skin-fitting groove, and the skin-fitting groove 17 is formed at the center of the top end face of the cutting part 3, extending towards the end of the cutting teeth 4 away from the cutting part 3. This design allows the skin-fitting groove 17 to be evenly distributed on the cutting part 3, ensuring that the razor can fully fit the skin surface during use and avoid missing any areas.

[0021] Reference Appendix Figure 1-3 The skin-contact groove 17 includes a first skin-contact groove 18 and a second skin-contact groove 19. A raised rib 20, with a height flush with the top of the cutting teeth 4, is located between the first skin-contact groove 18 and the second skin-contact groove 19. The raised rib 20 is positioned along the length of the cutting section 3. Specifically, in this embodiment, the design of the first skin-contact groove 18 and the second skin-contact groove 19 not only enhances the skin-contact effect but also increases the structural strength of the blade through the raised rib 20. The height of the raised rib 20 being flush with the top of the cutting teeth 4 allows it to act as an additional support point when the blade is in contact with the skin, reducing blade deformation during shaving and ensuring shaving accuracy and stability. Simultaneously, the raised rib 20 being positioned along the length of the cutting section 3 helps guide hair along the raised rib 20 into the skin-contact groove 17, further improving shaving efficiency.

[0022] Furthermore, the thickness of the recessed shearing section 3 is 0.08-0.3 mm. Specifically, in this embodiment, the thickness of the recessed shearing section 3 is controlled within the range of 0.08-0.3 mm. This design balances the strength and sharpness of the blade. An excessively thick shearing section may result in an insufficiently sharp blade, affecting the shaving effect; while an excessively thin shearing section may reduce the durability of the blade and make it prone to damage during use.

[0023] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A razor blade, comprising a blade body (1), the blade body (1) having two opposing blade walls (2) and a cutting portion (3) disposed between the blade walls (2), wherein a plurality of spaced cutting teeth (4) are formed on the cutting portion (3), characterized in that: The cutting tooth (4) includes a closed cutting tooth (5) and an open cutting tooth (6). The two ends of the closed cutting tooth (5) are respectively connected to the corresponding blade wall (2) and the shearing part (3). One end of the open cutting tooth (6) is connected to the shearing part (3), and the other end of the open cutting tooth (6) forms a hair inlet (7) connecting the blade body (1) to the blade wall (2).

2. The shaving razor blade of claim 1 wherein: The open cutter (6) has an open tooth body (8) and a tooth tip (9). The tooth tip (9) is located on the end of the open tooth body (8) away from the shearing part (3). The top of the tooth tip (9) is provided with a bevel structure (10) on the side away from the open tooth body (8).

3. The shaving razor blade of claim 1 wherein: The closed cutting tooth (5) has a blade wall connecting part (12) that connects to the blade wall (2), a shearing connecting part (13) that connects to the shearing part (3), and a tooth protrusion (14) disposed between the blade wall connecting part (12) and the shearing connecting part (13). The two ends of the tooth protrusion (14) are connected to the blade wall connecting part (12) and the shearing connecting part (13) respectively. The tooth protrusion is arranged in a C-shaped structure. The shearing connecting part (13) has a horizontal cutting edge (15). The tooth protrusion (14) has an arc-shaped cutting edge (16). The horizontal cutting edge (15) extends to the tooth protrusion (14) and connects with the arc-shaped cutting edge (16). The vertical distance between the point where the horizontal cutting edge (15) and the arc-shaped cutting edge (16) connects and the end of the open cutting tooth (6) away from the shearing part (3) is L, where L≥0.

4. The shaving razor blade of claim 1 wherein: The top end face of the shearing part (3) is sunken to form a skin-fitting groove (17) with a length less than that of the shearing part (3), so that the end of the cutting tooth (4) away from the center of the cutting part forms a protruding structure with a height higher than the groove wall of the skin-fitting groove (17).

5. The shaving razor blade of claim 4 wherein: The skin-adhesive groove (17) is provided and formed at the center of the top end face of the shearing part (3) and extends towards the end of the cutting tooth (4) away from the shearing part (3).

6. The shaving razor blade of claim 4 wherein: The skin-adhesive groove (17) includes a first skin-adhesive groove (18) and a second skin-adhesive groove (19). There is a raised rib (20) between the first skin-adhesive groove (18) and the second skin-adhesive groove (19) with a height level with the top of the cutting tooth (4). The raised rib (20) is arranged along the length direction of the shearing part (3).

7. The shaving razor blade of any of claims 4-6 wherein: The thickness of the shear section (3) after sinking is 0.08-0.3 mm.

Images