Shaving cutter blade with novel cutter tooth structure

Abstract

The razor blade with the novel cutter tooth structure comprises a blade body, the blade body is provided with a shearing part, the shearing part is provided with a plurality of cutting teeth arranged at intervals, the cutting teeth comprise closed cutter teeth and open cutter teeth, and the closed cutter teeth and the open cutter teeth are arranged at intervals. The side, far away from the center of the shearing part, of each closed cutter tooth protrudes to form a tooth protrusion, the tooth protrusions are locally sunken to form tooth convex-concave grooves, the tooth protrusions are locally sunken to form the tooth convex-concave grooves, the surfaces of the tooth protrusions are of a concave-convex structure, and therefore in the process that the tooth protrusions make contact with hair, the hair can be more effectively cut. And the parts, close to the edges of the tooth convex-concave grooves, of the tooth bulges can shovel up hair tightly attached to the skin, so that the hair is more easily captured by the subsequent cutting action, and the shaving efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hair cutting equipment, in particular to a razor blade with a novel blade tooth structure. Background Art

[0002] In the prior art, when razors cut hair, since the surfaces of the blade teeth are mostly smooth arcs or planes, they cannot achieve the best trimming effect when trimming hair close to the skin surface, resulting in some hair still remaining on the skin surface, affecting the user's shaving experience. Summary of the Invention

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

[0004] To achieve the above object, the present invention provides the following technical solutions: A razor blade with a novel tooth structure includes a blade body, the blade body having a shearing portion, the shearing portion being provided with a plurality of cutting teeth arranged at intervals, the cutting teeth including closed teeth and open teeth, the closed teeth and the open teeth being arranged at intervals, the closed teeth protruding toward a side away from the center of the shearing portion to form tooth ridges, and the tooth ridges being partially recessed to form tooth ridge grooves.

[0005] Preferably, the blade body has two blade walls, the shearing portion is arranged between the blade walls, the cutting teeth are formed on at least one side of the shearing portion, the two ends of the closed blade tooth are respectively connected to the shearing portion and the blade wall, one end of the open blade tooth is connected to the shearing portion, and an opening connected to the interior of the blade body is formed between the other end of the open blade tooth and the blade wall.

[0006] Preferably, the blade walls are symmetrically arranged on both sides of the blade body, and the closed blade teeth and the open blade teeth are both arranged between the shearing portion and the blade walls symmetrically arranged on both sides.

[0007] Preferably, the tooth convex groove is arranged along the width direction of the tooth convex on a side of the tooth convex close to the shearing portion.

[0008] Preferably, the tooth protrusion is located on both sides of the tooth protrusion groove to form a first wave crest portion and a second wave crest portion, the first wave crest portion is arranged on the side of the second wave crest portion away from the shear portion, the vertical distance from the first wave crest portion to the shear portion is H1, and the vertical distance from the second sealing portion to the shear portion is H2, and H1≥H2.

[0009] Preferably, when H1 is greater than H2, the height difference between H1 and H2 is less than or equal to 1 mm.

[0010] Preferably, the first wave peak portion is arranged in an arc surface structure, the first wave peak portion and the second wave peak portion are respectively connected to the two side groove walls of the tooth convex groove, the tooth convex groove is arranged in an arc groove structure, and there is a continuous and smooth transition between the first wave peak portion, the tooth convex groove and the second wave peak portion.

[0011] Preferably, portions of both side walls of the closed blade teeth located on the tooth protrusion are inclined toward the center of one end of the tooth protrusion away from the shearing portion, so that the cross-section of the tooth protrusion is in the shape of an inverted trapezoid.

[0012] Preferably, the closed blade tooth has an upper tooth portion connected to the shearing portion and a lower tooth portion connected to the blade wall, the tooth protrusion is formed between the upper tooth portion and the lower tooth portion, and both ends of the tooth protrusion are respectively connected to the upper tooth portion and the lower tooth portion.

[0013] Preferably, the closed blade teeth and the open blade teeth are both inclined to the center line in the length direction of the shearing portion, and the inclination directions of the closed blade teeth and the open blade teeth are the same.

[0014] Preferably, the shearing portion is partially sunken to form a skin-contacting groove, and the skin-contacting groove extends to the closed blade teeth and the open blade teeth.

[0015] Preferably, the skin-contacting grooves are formed on both sides of the shearing portion in the length direction, and a rib structure is formed between the skin-contacting grooves on both sides.

[0016] The beneficial effect of the present invention is that: by locally recessing the tooth protrusions to form a tooth protrusion groove structure, the surface of the tooth protrusion forms a concave-convex structure. Such a structure enables the tooth protrusion to scoop up the hair close to the skin at the portion of the tooth protrusion close to the edge of the tooth protrusion groove when the tooth protrusion contacts the hair, making it easier for these hairs to be captured by the subsequent cutting action, thereby improving the shaving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Attachment Figure 1 This is a schematic diagram of the design structure; Attachment Figure 2 For attachment Figure 1 Top view; Attachment Figure 3 For attachment Figure 1 Cross-sectional view at AA in the middle; Attachment Figure 4 For attachment Figure 1 Side view. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] The present invention provides the following technical solutions: As attached Figure 1-4 As shown, the present invention discloses a razor blade with a novel tooth structure, comprising a blade body 1, wherein the blade body 1 has a shearing portion 2, and the shearing portion 2 is provided with a plurality of cutting teeth arranged at intervals, wherein the cutting teeth include closed teeth 3 and open teeth 4, wherein the closed teeth 3 and the open teeth 4 are arranged at intervals, and the closed teeth 3 protrude toward a side away from the center of the shearing portion 2 to form tooth protrusions 5, and the tooth protrusions 5 are partially recessed to form tooth protrusion grooves 6. Specifically, in this design, by forming a structure in which the tooth protrusions 5 are partially recessed to form tooth protrusion grooves 6, a concave-convex structure is formed on the surface of the tooth protrusions 5. Such a structure enables the tooth protrusions 5 to scoop up the hair close to the skin at the portion of the tooth protrusions 5 near the edge of the tooth protrusion grooves 6 during the process of contacting the hair, so that these hairs are more easily captured by the subsequent cutting action, thereby improving the shaving efficiency.

[0022] Furthermore, the blade body 1 has two blade walls 7, the shearing portion 2 is arranged between the blade walls 7, the cutting teeth are formed on at least one side of the shearing portion 2, the two ends of the closed blade tooth 3 are connected to the shearing portion 2 and the blade wall 7 respectively, one end of the open blade tooth 4 is connected to the shearing portion 2, and the other end of the open blade tooth 4 is formed with the blade wall 7 to connect to the interior of the blade body 1. Specifically, in this embodiment, the setting of the opening 8 allows the hair to be guided into the interior of the blade body 1 during the shaving process, further enhancing the shaving effect and reducing hair residue. In addition, the opening 8 also helps to reduce the friction generated during shaving, making the shaving process smoother and improving the user experience. The setting of the blade wall 7 not only enhances the overall structural strength of the blade, but also makes the blade more stable during use.

[0023] Furthermore, the blade walls 7 are symmetrically arranged on both sides of the blade body 1, and the closed blade teeth 3 and the open blade teeth 4 are both arranged between the cutting portion 2 and the symmetrical blade walls 7. Specifically, in this embodiment, the symmetrical arrangement of the blade walls 7 enhances the stability and service life of the blade, allowing the user to obtain a more stable and long-lasting shaving effect during use.

[0024] Furthermore, the tooth protrusion groove 6 is arranged along the width direction of the tooth protrusion 5 on the side of the tooth protrusion 5 close to the cutting portion 2. Specifically, in this embodiment, the tooth protrusion groove 6 is arranged along the width direction of the tooth protrusion 5 on the side of the tooth protrusion 5 close to the cutting portion 2, which can further improve the hair scraping effect, so that when the blade is close to the skin, the edge of the tooth protrusion groove 6 is more likely to cut into the root of the hair, effectively reducing the residual hair.

[0025] Furthermore, the tooth protrusions 5 are located on both sides of the tooth protrusion grooves 6 to form a first wave crest 9 and a second wave crest 10. The first wave crest 9 is arranged on the side of the second wave crest 10 away from the cutting portion 2. The vertical distance from the first wave crest 9 to the cutting portion 2 is H1, and the vertical distance from the second sealing portion to the cutting portion 2 is H2, and H1 ≥ H2. Specifically, in this embodiment, the height difference design of the first wave crest 9 and the second wave crest 10 enables the blade to form a smoother cutting path when cutting hair. The higher design of the first wave crest 9 enables it to first contact the hair and play a guiding role, directing the hair to the second wave crest 10 for further cutting. The second wave crest 10 is relatively low, which can fit the skin more effectively and ensure the accuracy and comfort of cutting. This design not only improves the shaving efficiency, but also reduces skin irritation, making the use process safer and more comfortable.

[0026] Furthermore, when H1 is greater than H2, the height difference between H1 and H2 is less than or equal to 1 mm. Specifically, in this embodiment, the height difference between H1 and H2 is less than or equal to 1 mm, thereby forming a step difference between the first wave crest portion 9 and the second wave crest portion 10, thereby facilitating the scooping of hair close to the skin. The step difference design can utilize the elasticity of the hair, causing it to slightly bend when it contacts the first wave crest portion 9, and then be smoothly cut by the second wave crest portion 10.

[0027] Furthermore, the first wave crest 9 is configured as a curved surface structure, with the first wave crest 9 and the second wave crest 10 respectively connected to the side walls of the tooth-convex groove 6. The tooth-convex groove 6 is configured as an arcuate groove structure, with a continuous and smooth transition between the first wave crest 9, the tooth-convex groove 6, and the second wave crest 10. Specifically, in this embodiment, the curved surface design of the first wave crest 9 not only increases the contact area with the hair, but also improves the smoothness of cutting and reduces frictional resistance. This continuous and smooth transition design allows the blade to cut hair more smoothly, avoiding skin irritation or discomfort caused by sudden changes. At the same time, the curved surface structure of the first wave crest 9 can better conform to the curved surface of the skin, ensuring uniform force during shaving, further improving the shaving effect and comfort. In addition, the arcuate groove design of the tooth-convex groove 6 also helps to improve the hair-shaving effect. The edge of the arcuate groove can more smoothly cut into the roots of the hair, effectively reducing hair residue. At the same time, the structure of the arc groove also has a certain degree of elasticity, which can produce appropriate deformation when it comes into contact with the hair, thereby better adapting to the shape of the hair and ensuring the accuracy and comfort of cutting.

[0028] Furthermore, the portions of the two side walls of the closed blade tooth 3 located on the tooth protrusion 5 are inclined toward the center of the end of the tooth protrusion 5 away from the shearing portion 2, so that the cross-sectional shape of the tooth protrusion 5 is set in an inverted trapezoidal shape. Specifically, in the present embodiment, this inclined design of the two side walls of the closed blade tooth 3 enables the tooth protrusion 5 to be more easily inserted into the root of the hair when it contacts the hair, thereby improving the hair shoveling effect. At the same time, the inverted trapezoidal cross-sectional shape increases the contact area between the tooth protrusion 5 and the hair, making the cutting smoother and reducing the cutting resistance. This design not only improves the shaving efficiency, but also makes the shaving process more comfortable and reduces irritation to the skin. In addition, the inverted trapezoidal structure also has a certain guiding effect, which can guide the hair to move toward the center of the blade body, further ensuring the accuracy and comfort of cutting.

[0029] Furthermore, the closed tooth 3 has an upper tooth portion 11 connected to the shearing portion 2 and a lower tooth portion 12 connected to the blade wall 7. The tooth protrusion 5 is formed between the upper tooth portion 11 and the lower tooth portion 12, with both ends of the tooth protrusion 5 respectively connected to the upper tooth portion 11 and the lower tooth portion 12. Specifically, in this embodiment, the upper tooth portion 11 and the lower tooth portion 12 of the closed tooth 3 are respectively connected to the shearing portion 2 and the blade wall 7, ensuring the stability of the overall structure of the blade.

[0030] Furthermore, both the closed blade teeth 3 and the open blade teeth 4 are inclined relative to the longitudinal centerline of the shearing portion 2, and the closed blade teeth 3 and the open blade teeth 4 are inclined in the same direction. Specifically, in this embodiment, the closed blade teeth 3 and the open blade teeth 4 are inclined at the same angle. This design allows the blades to glide more smoothly during shaving, reducing friction and resistance on the skin and improving user comfort. Furthermore, the inclined cutting tooth structure also helps to form a certain shear angle during shaving, making it easier to cut hair and further improving shaving efficiency.

[0031] Furthermore, the shearing portion 2 is partially sunken to form a skin-contacting groove 13, which extends onto the closed blade teeth 3 and the open blade teeth 4. Specifically, in this embodiment, the provision of the skin-contacting groove 13 enables the blade to more closely adhere to the skin surface during hair trimming. The cross-sectional shape of the skin-contacting groove 13 is an inverted trapezoid. This design allows the edge of the skin-contacting groove 13 to conform to the skin contour when the blade contacts the skin, reducing sliding resistance and improving user comfort. At the same time, the inverted trapezoidal cross-sectional shape allows the skin-contacting groove 13 to better accommodate scooped hair, preventing the hair from being pressed back into the skin during blade movement, further improving the shaving effect.

[0032] Furthermore, the skin-contacting grooves 13 are formed on both sides of the cutting section 2 in the longitudinal direction, and a rib structure 14 protrudes between the skin-contacting grooves 13 on both sides. Specifically, in this embodiment, the thickness of the cutting section 2 where the sunken skin-contacting grooves 13 are located is thinner than the thickness of the rest of the cutting section 2, resulting in a thinner cutting thickness at this location, thereby enabling hair to be cut shorter. At the same time, the skin-contacting grooves 13 on both sides cooperate with the rib structure 14 to enhance the overall structural strength of the blade, making the blade more stable and durable during the shaving process.

[0033] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one 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 limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A razor blade with a novel tooth structure, comprising a blade body (1), wherein the blade body (1) has a shearing portion (2), and the shearing portion (2) is provided with a plurality of cutting teeth arranged at intervals, characterized in that: The cutting teeth comprise closed teeth (3) and open teeth (4), the closed teeth (3) and the open teeth (4) being arranged at intervals, the closed teeth (3) protruding toward a side away from the center of the shearing portion (2) to form a tooth bulge (5), and the tooth bulge (5) is partially recessed to form a tooth bulge groove (6).

2. The razor blade with a novel tooth structure according to claim 1, characterized in that: The blade body (1) has two blade walls (7), the shearing portion (2) is arranged between the blade walls (7), the cutting teeth are formed on at least one side of the shearing portion (2), the two ends of the closed blade tooth (3) are respectively connected to the shearing portion (2) and the blade wall (7), one end of the open blade tooth (4) is connected to the shearing portion (2), and an opening (8) communicating with the interior of the blade body (1) is formed between the other end of the open blade tooth (4) and the blade wall (7).

3. The razor blade with a novel tooth structure according to claim 2, characterized in that: The blade walls (7) are symmetrically arranged on both sides of the blade body (1), and the closed blade teeth (3) and the open blade teeth (4) are both arranged between the shearing portion (2) and the symmetrical blade walls (7).

4. The razor blade with a novel tooth structure according to claim 1, characterized in that: The tooth protrusion groove (6) is arranged along the width direction of the tooth protrusion (5) on a side of the tooth protrusion (5) close to the shearing portion (2).

5. The razor blade with a novel tooth structure according to claim 1, characterized in that: The tooth protrusion (5) is located on both sides of the tooth protrusion groove (6) to form a first wave crest portion (9) and a second wave crest portion (10), the first wave crest portion (9) is arranged on a side of the second wave crest portion (10) away from the shearing portion (2), the vertical distance from the first wave crest portion (9) to the shearing portion (2) is H1, and the vertical distance from the second sealing portion to the shearing portion (2) is H2, and H1≥H2.

6. The razor blade with a novel tooth structure according to claim 4, characterized in that: When H1 is greater than H2, the height difference between H1 and H2 is less than or equal to 1 mm.

7. The razor blade with a novel tooth structure according to claim 4, characterized in that: The first wave crest portion (9) is arranged in an arcuate structure, the first wave crest portion (9) and the second wave crest portion (10) are respectively connected to the groove walls on both sides of the tooth convex groove (6), the tooth convex groove (6) is arranged in an arcuate groove structure, and a continuous and smooth transition is formed between the first wave crest portion (9), the tooth convex groove (6) and the second wave crest portion (10).

8. The razor blade with a novel tooth structure according to claim 1, characterized in that: The portions of the two side walls of the closed blade teeth (3) located on the tooth protrusion (5) are inclined toward the center of the end of the tooth protrusion (5) away from the shearing portion (2), so that the cross-section of the tooth protrusion (5) is in the shape of an inverted trapezoid.

9. The razor blade with a novel tooth structure according to claim 7, characterized in that: The closed blade tooth (3) comprises an upper tooth portion (11) connected to the shearing portion (2) and a lower tooth portion (12) connected to the blade wall (7); the tooth protrusion (5) is formed between the upper tooth portion (11) and the lower tooth portion (12); and two ends of the tooth protrusion (5) are respectively connected to the upper tooth portion (11) and the lower tooth portion (12).

10. The razor blade with a novel tooth structure according to claim 2, characterized in that: The closed blade teeth (3) and the open blade teeth (4) are both inclined to the center line of the shearing portion (2) in the length direction, and the closed blade teeth (3) and the open blade teeth (4) have the same inclination direction.

11. The razor blade with a novel tooth structure according to claim 1, characterized in that: The shearing portion (2) is partially sunken to form a skin-contacting groove (13), and the skin-contacting groove (13) extends to the closed blade teeth (3) and the open blade teeth (4).

12. The razor blade with a novel tooth structure according to claim 11, characterized in that: The skin-contacting groove (13) is formed on both sides of the shearing portion (2) in the length direction, and a convex rib structure (14) is formed between the skin-contacting grooves (13) on both sides.

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