Shaving blade

Abstract

A shaving blade, comprising a moving cutter (20) and a stationary cutter (10) attached to the moving cutter. The stationary cutter is provided with a stationary cutter panel (11) that contacts skin and a stationary cutter side plate (12) at least provided on one side of the stationary cutter panel and connected to the stationary cutter panel. The stationary cutter panel is in an arc shape that curves upward or curves downward in an orthographic projection direction of an outer surface of the stationary cutter side plate, and / or the stationary cutter panel is in an arc shape that curves upward or curves downward in the orthographic projection direction of either end of two ends thereof. In the shaving blade, the stationary cutter panel is arranged in an arc shape, so that a contact surface between cutting teeth of the stationary cutter and skin is reduced during shaving, and the comfort of use of the shaving blade is effectively improved.

Description

shaving blades

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 28, 2023, with application number 202311276449.6 and invention name “Shaving Blade”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of blade manufacturing, and in particular to a shaving blade. Background Art

[0004] Existing shaving blades include a stationary blade and a movable blade. The stationary blade has a stationary blade shearing portion, which forms stationary blade teeth. The movable blade can move relative to the stationary blade. The movable blade has two movable blades, which are connected to form a single unit. The two movable blades are each provided with a movable blade tooth portion at the same end, forming movable blade teeth. The two movable blade tooth portions together form a movable blade shearing portion that cooperates with the stationary blade shearing portion. However, the stationary blade of such shaving blades is a comb-shaped outer blade with a relatively flat outer surface. The stationary blade teeth are located at almost the same height. This results in a larger contact area between the stationary blade teeth and the skin during shaving, significantly affecting the comfort of the shaving blade.

[0005] Summary of the Invention

[0006] The main purpose of the present application is to provide a shaving blade, aiming to improve the comfort of use of the shaving blade.

[0007] To achieve the above-mentioned purpose, the present application proposes a razor blade, comprising a movable blade and a stationary blade attached to the movable blade, the stationary blade having a stationary blade panel in contact with the skin and a stationary blade side panel connected to the stationary blade panel at least on one side of the stationary blade panel, the stationary blade panel being in an arc shape that is curved upward or downward in the orthographic projection direction of the outer surface of the stationary blade side panel, and / or the stationary blade panel being in an arc shape that is curved upward or downward in the orthographic projection direction of either end of the stationary blade panel.

[0008] Optionally, when the static blade panel is in an upwardly curved arc shape in the orthographic projection direction of either end thereof, the distance between the highest point and the lowest point of the outer surface projection arc of the static blade panel is less than or equal to 3 mm.

[0009] Optionally, the distance between the highest point and the lowest point of the projection arc of the outer surface of the static blade panel is between 0.3 and 1 mm.

[0010] Optionally, when the static blade panel is in an upwardly curved arc shape in the orthographic projection direction of the outer surface of the static blade side plate, the radius of the arc line of the outer surface projection of the static blade panel is between 100 and 500 mm.

[0011] Optionally, the radius of the projected arc of the outer surface of the static blade panel is between 200 and 250 mm.

[0012] Optionally, the movable knife includes a movable knife body, the movable knife body having a movable knife panel fitted with the stationary knife panel and a movable knife side panel arranged on at least one side of the movable knife panel and connected to the movable knife panel, the movable knife panel is provided with a plurality of spaced movable knife cutting teeth to form a movable knife cutting tooth group, and a movable knife cutting groove is formed between two adjacent movable knife cutting teeth, and the movable knife panel is in an arc shape that is bent upward or downward in the positive projection direction of either end of the movable knife panel.

[0013] Optionally, an isolation block extending along the length direction of the movable knife panel is provided in the middle portion thereof, and the isolation block divides each movable knife cutting groove into two to form a first movable knife cutting groove and a second movable knife cutting groove.

[0014] Optionally, an extension groove communicating with the movable knife cutting groove is provided on the movable knife side plate, and the movable knife cutting teeth are arranged in an arch shape.

[0015] Optionally, a plurality of spaced-apart stationary knife cutting teeth are provided on at least one edge of both side edges of the stationary knife panel, an outer hair guide groove opening outward is formed between two adjacent stationary knife cutting teeth, an open groove penetrating the stationary knife panel so that the hair can move along the length direction of the stationary knife panel is provided in the stationary knife panel, and an inner hair guide groove opening inward and connected to the open groove is provided in each of the stationary knife cutting teeth.

[0016] Optionally, a side open groove is provided on the static knife side plate, and the side open groove is connected to the outer guide groove. The side open groove includes a plurality of first side open sub-grooves and second side open sub-grooves arranged alternately. The first side open sub-grooves and the outer guide groove connected thereto form a "concave" shape, and the second side open sub-grooves and the outer guide groove connected thereto form a "convex" shape.

[0017] Optionally, a plurality of the stationary knife cutting teeth arranged at intervals constitute a stationary knife cutting tooth group, and a stationary knife cutting tooth group is provided on both side edges of the stationary knife panel. The open groove is located between the two stationary knife cutting tooth groups, and the stationary knife cutting teeth in the two stationary knife cutting tooth groups are relatively staggered or symmetrically arranged.

[0018] Optionally, a dividing block is provided in the open groove, and the dividing block divides the open groove into two to form a first open groove and a second open groove.

[0019] In the technical solution of the present application, the static blade of the razor blade comprises a static blade panel that contacts the skin and a static blade side panel disposed at least on one side of the static blade panel and connected to the static blade panel. A plurality of static blade cutting teeth are disposed at intervals along the edge of the static blade panel. The static blade panel is in an arc shape that curves upward or downward in the orthographic projection direction of the outer surface of the static blade side panel, and / or the static blade panel is in an arc shape that curves upward or downward in the orthographic projection direction of either end of the static blade panel. In this manner, each static blade cutting tooth is in an arc shape, and different portions of the static blade cutting teeth are at different heights. During shaving, only a portion of the static blade cutting teeth contacts the skin, reducing the contact area between the static blade cutting teeth and the skin, thereby effectively improving the user comfort of the razor blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application 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 application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] FIG1 is a schematic structural diagram of an embodiment of a shaving blade of the present application;

[0022] FIG2 is an exploded view of an embodiment of a shaving blade of the present application;

[0023] FIG3 is an orthographic projection of a static blade on the outer surface of a static blade side plate in one embodiment of the razor blade of the present application;

[0024] FIG4 is an orthographic projection of a stationary blade at either end of an embodiment of a shaving blade of the present application;

[0025] FIG5 is an orthographic projection of a stationary blade on the outer surface of a stationary blade side plate in another embodiment of the shaving blade of the present application;

[0026] FIG6 is an orthographic projection of a stationary blade at either end of another embodiment of the shaving blade of the present application;

[0027] FIG7 is a schematic structural diagram of a stationary blade in another embodiment of the shaving blade of the present application;

[0028] FIG8 is a schematic structural diagram of a movable blade in an embodiment of a shaving blade of the present application;

[0029] FIG9 is an orthographic projection of a movable blade at either end of an embodiment of a shaving blade of the present application;

[0030] FIG10 is an orthographic projection of the movable blade at either end of another embodiment of the shaving blade of the present application.

[0031] Explanation of the accompanying numbers: 10. Stationary knife; 20. Moving knife; 11. Stationary knife panel; 12. Stationary knife side panel; 21. Moving knife panel; 22. Moving knife side panel; 211. Moving knife cutting teeth; 212. Moving knife cutting groove; 213. Isolation block; 2121. First moving knife cutting groove; 2122. Second moving knife cutting groove; 214. Extension groove; 111. Stationary knife cutting teeth; 112. Outer hair guide groove; 113. Open groove; 114. Inner hair guide groove; 121. Side open groove; 1211. First side open sub-groove; 1212. Second side open sub-groove; 115. Separation block.

[0032] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0034] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution in which both A and B are satisfied. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0036] The present application proposes a shaving blade, which can be applicable to electric shavers, etc., but is not limited here.

[0037] 1 to 6 , in some embodiments of the present application, the razor blade includes a stationary blade 10 and a movable blade 20. The stationary blade 10 is attached to the movable blade 20. The stationary blade 10 has a stationary blade panel 11 in contact with the skin and a stationary blade side panel 12 connected to the stationary blade panel 11 on at least one side of the stationary blade panel 11. A plurality of stationary blade cutting teeth 111 are arranged at intervals at the edge of the stationary blade panel 11. The stationary blade panel 11 is in an arc shape that is bent upward or downward in the orthographic projection direction of the outer surface of the stationary blade side panel 12, and / or the stationary blade panel 11 is in an arc shape that is bent upward or downward in the orthographic projection direction of either end of the stationary blade panel 11.

[0038] The static blade panel 11 has an upwardly curved or downwardly curved arc shape in the direction of the orthographic projection of the outer surface of the static blade side panel 12. That is, when viewing the static blade panel 11 from the front of the static blade side panel 12, as shown in Figures 3 and 5 , the projection line of the static blade panel 11 has an upwardly curved arch shape or a downwardly curved concave shape. The static blade panel 11 has an upwardly curved or downwardly curved arc shape in the direction of the orthographic projection of either end. That is, when viewing the static blade panel 11 from one end of the static blade panel 11, as shown in Figures 4 and 6 , the projection line of the static blade panel 11 in this case has an upwardly curved arch shape or a downwardly curved concave shape.

[0039] It can be understood that the present application adopts the above-mentioned structure of the static knife panel 11, and makes the static knife panel 11 into an arc structure, so that each static knife cutting tooth 111 thereon is in an arc shape, and thus the various parts of the static knife cutting teeth 111 are at different heights. During the shaving process, the static knife cutting teeth 111 are only partially in contact with the skin, and the contact area between the static knife cutting teeth 111 and the skin is reduced, which effectively improves the comfort of using the shaving blade.

[0040] In order to further improve the comfort of use of the shaving blade and facilitate production and processing, in one embodiment, mainly referring to Figure 4, when the static blade panel 11 is in an upward curved arc shape in the positive projection direction of either end of the static blade panel 11, the distance between the highest point and the lowest point of the outer surface projection arc of the static blade panel 11 can be set to be less than or equal to 3 mm, that is, the value of h2 in the figure is less than or equal to 3 mm.

[0041] Preferably, in this embodiment, the distance between the highest and lowest points of the projected arc of the outer surface of the static blade panel 11 can be between 0.3 and 1 mm. This ensures that the contact area between the static blade cutting teeth 111 and the skin is at an appropriate level, ensuring both effective and efficient shaving while ensuring smooth shaving contact and enhancing user comfort.

[0042] In another embodiment, mainly referring to Figure 3, when the static blade panel 11 is in an upward curved arc shape in the positive projection direction of the outer surface of the static blade side plate 12, the radius of the outer surface projection arc of the static blade panel 11 can be between 100 and 500 mm, that is, the value of h1 in the figure is between 100 and 500 mm, so as to further improve the comfort of use of the shaving blade and facilitate production and processing.

[0043] Preferably, in this embodiment, the radius of the projected arc of the outer surface of the static knife panel 11 can be between 200 and 250 mm. In this way, the contact area between the static knife cutting teeth 111 and the skin can be at a moderate level, which can not only ensure the shaving effect and efficiency, but also be comfortable to use. Specifically, within this range, the teeth of the static knife 10 can better fit the skin surface, and will not be too sharp or too flat. If the arc is too large, when shaving facial beards, the skin contact feeling is not good, the contact surface is too large, and the shaving is not smooth; in addition, it is inconvenient to shave hair on the neck, because the neck produces less oil, and less contact is required for a smooth shaving. If the arc is too small, the shaving contact surface is too small, and the facial shaving efficiency is low; in addition, if the arc is too small, the height difference of the razor's running arc is large, and the operation is unstable, which affects the sharpness.

[0044] In order to further improve the overall comfort of use of the razor blade and reduce the risk of scratching the skin, the present application also makes improvements to the movable blade 20 of the razor blade. Please refer to Figures 1 and 2, and Figures 8 to 10. In some embodiments of the present application, the movable blade 20 may include a movable blade body, the movable blade body having a movable blade panel 21 that is in contact with the stationary blade panel 11 and a movable blade side panel 22 that is arranged on at least one side of the movable blade panel 21 and connected to the movable blade panel 21. The movable blade panel 21 is provided with a plurality of spaced movable blade cutting teeth 211 to form a movable blade cutting tooth group, and a movable blade cutting groove 212 is formed between two adjacent movable blade cutting teeth 211. Mainly referring to Figures 9 and 10, the movable blade panel 21 is in an arc shape that is bent upward or downward in the positive projection direction of either end of the movable blade panel 21.

[0045] In this embodiment, the movable knife panel 21 is in the shape of an arc that bends upward or downward in the positive projection direction of either end thereof, that is, when viewed from one end of the movable knife panel 21, as shown in Figures 9 and 10, the projection line of the movable knife panel 21 is in the shape of an upwardly curved arch or a downwardly curved concave shape.

[0046] It can be understood that the present application makes the movable knife panel 21 into an arc-shaped structure, so that each movable knife cutting tooth 211 thereon is in an arc shape, and thus the different parts of the movable knife cutting teeth 211 are at different heights. During the shaving process, the movable knife cutting teeth 211 are only partially in contact with the skin, which reduces the contact area between the movable knife cutting teeth 211 and the skin, effectively improves the comfort of using the shaving blade, and reduces the risk of the movable knife 20 scratching the skin.

[0047] 8 , in one embodiment, an isolation block 213 extending along the length direction of the movable blade panel 21 is provided in the middle thereof. The isolation block 213 divides each movable blade cutting groove 212 into two, forming a first movable blade cutting groove 2121 and a second movable blade cutting groove 2122 .

[0048] The present application adds an isolation block 213 to the movable blade panel 21. The isolation block 213 extends from the middle of one end of the movable blade panel 21 to the middle of the other end thereof and is disposed transversely on the movable blade panel 21. This connects the movable blade cutting teeth 211 on both sides of the movable blade panel 21 in the width direction thereof, thereby providing a continuous planar structure in the middle of the movable blade panel 21. This reduces the risk of scratching the skin during shaving, speeds up hair cutting, and improves shaving efficiency. Furthermore, providing the isolation block 213 on the movable blade panel 21 can also increase the overall strength of the movable blade panel 21, thereby enhancing the deformation resistance of the movable blade 20 of the razor.

[0049] Referring to Figure 8 , in one embodiment, the movable blade side plate 22 may be provided with an extension slot 214 interconnected with the movable blade cutting slot 212. The movable blade cutting teeth 211 are concave or arched. Thus, the movable blade cutting slot 212 and the extension slot 214 connect to form the entire tooth groove of the movable blade 20. The tooth groove of the movable blade 20 forms a three-dimensional structure, allowing the tooth groove of the movable blade 20 to correspond to the tooth groove of the stationary blade 10, thereby ensuring that hairs entering the tooth groove of the stationary blade 10 can smoothly enter the tooth groove of the movable blade 20, thereby achieving hair cutting.

[0050] In addition, referring to Figures 1 and 2, in some embodiments, a plurality of spaced-apart stationary knife cutting teeth 111 are provided on at least one edge of both side edges of the stationary knife panel 11, and an outer hair guide groove 112 opening outward is formed between two adjacent stationary knife cutting teeth 111. An open groove 113 is provided in the stationary knife panel 11, which passes through the stationary knife panel 11 so that the hair can move along the length direction of the stationary knife panel 11, and an inner hair guide groove 114 opening inward and communicating with the open groove 113 is provided in each stationary knife cutting tooth 111.

[0051] In this embodiment, an open groove 113 is provided in the stationary blade panel 11, and an inner hair guide groove 114 is provided in the stationary blade cutting teeth 111, so that when shaving, the hair can not only move in the open groove 113 along the length direction of the stationary blade panel 11, but also move in the inner hair guide groove 114 along the width direction of the stationary blade panel 11. That is, the razor can not only introduce and capture hair in the width direction of the stationary blade panel 11, but also introduce and capture hair in the length direction of the stationary blade panel 11, which greatly improves the ability to introduce and capture hair, thereby improving the shaving effect of the razor blade.

[0052] Referring primarily to Figures 2 and 7 , in some embodiments, the static blade side plate 12 may be provided with a side-open slot 121 that communicates with the outer hair guide slot 112. The side-open slot 121 includes a plurality of staggered first side-open sub-slots 1211 and second side-open sub-slots 1212. The first side-open sub-slots 1211 and the outer hair guide slot 112 communicate therewith form a concave shape, while the second side-open sub-slots 1212 and the outer hair guide slot 112 communicate therewith form a convex shape. This effectively enhances the hair introduction and capture performance.

[0053] In this embodiment, a number of stationary knife cutting teeth 111 arranged at intervals constitute a stationary knife cutting tooth group. In order to further improve the shaving effect, a stationary knife cutting tooth group can be set on the edges of both sides of the stationary knife panel 11. The open groove 113 is located between the two stationary knife cutting tooth groups, and the stationary knife cutting teeth 111 in the two stationary knife cutting tooth groups are relatively staggered or symmetrically arranged.

[0054] In this embodiment, a plurality of side open grooves 121 can be evenly spaced on the static blade side plate 12 to ensure the uniformity of the hair cutting amount during the hair cutting process, and can effectively prevent the hair from entering the installation groove of the static blade side plate 12 and causing the hair pulling phenomenon, affecting the user experience.

[0055] 7 , in one embodiment, a partition block 115 may be provided in the open slot 113 . The partition block 115 divides the open slot 113 into two to form a first open slot and a second open slot. The partition block 115 extends along the length direction of the stationary blade panel 11 .

[0056] The present application adds a partition block 115 to the static blade panel 11, which can relatively limit the movement space of hair along the width direction of the open groove 113, and can accelerate the entry of hair into the inner hair guide groove 114, thereby improving the shaving efficiency; and, setting the partition block 115 on the static blade panel 11 can also improve the overall strength of the static blade panel 11, thereby enhancing the deformation resistance of the static blade 10.

[0057] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made using the contents of the present application specification and drawings under the inventive concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A razor blade, comprising a movable blade and a stationary blade attached to the movable blade, wherein the stationary blade comprises a stationary blade panel contacting with the skin and a stationary blade side panel at least arranged on one side of the stationary blade panel and connected to the stationary blade panel, characterized in that: The stationary knife panel is in an arc shape that is bent upward or downward in the orthographic projection direction of the outer surface of the stationary knife side plate, and / or the stationary knife panel is in an arc shape that is bent upward or downward in the orthographic projection direction of either end of the stationary knife panel.

2. The shaving blade according to claim 1, characterized in that When the static knife panel is in an upwardly curved arc shape in the orthographic projection direction of either end of the static knife panel, the distance between the highest point and the lowest point of the outer surface projection arc of the static knife panel is less than or equal to 3 mm.

3. The shaving blade according to claim 1, characterized in that The distance between the highest point and the lowest point of the projection arc of the outer surface of the static knife panel is between 0.3 and 1 mm.

4. The shaving blade according to claim 1, characterized in that When the stationary knife panel is in an arc shape that bends upward in the orthographic projection direction of the outer surface of the stationary knife side plate, the radius of the arc line of the outer surface projection of the stationary knife panel is between 100 and 500 mm.

5. The shaving blade according to claim 4, characterized in that The radius of the projection arc of the outer surface of the static knife panel is between 200 and 250 mm.

6. The shaving blade according to claim 1, characterized in that The movable knife includes a movable knife body, the movable knife body has a movable knife panel that is in contact with the stationary knife panel and a movable knife side panel that is at least arranged on one side of the movable knife panel and connected to the movable knife panel. The movable knife panel is provided with a plurality of movable knife cutting teeth arranged at intervals to form a movable knife cutting tooth group, and a movable knife cutting groove is formed between two adjacent movable knife cutting teeth. The movable knife panel is in an arc shape that is bent upward or downward in the positive projection direction of any one of its two ends.

7. The shaving blade according to claim 6, characterized in that An isolation block extending along the length direction of the movable knife panel is provided in the middle part of the movable knife panel, and the isolation block divides each movable knife cutting groove into two to form a first movable knife cutting groove and a second movable knife cutting groove.

8. The shaving blade according to claim 6, characterized in that The movable knife side plate is provided with an extension groove which is interconnected with the movable knife cutting groove, and the movable knife cutting teeth are arranged in an arch shape.

9. The shaving blade according to claim 1, wherein: A plurality of stationary knife cutting teeth are arranged at intervals on at least one edge of both side edges of the stationary knife panel, an outer hair guide groove opening outward is formed between two adjacent stationary knife cutting teeth, an open groove penetrating the stationary knife panel so that hair can move along the length direction of the stationary knife panel is provided in the stationary knife panel, and an inner hair guide groove opening inward and connected with the open groove is provided in each of the stationary knife cutting teeth.

10. The shaving blade according to claim 9, characterized in that A side open groove is provided on the stationary knife side plate, and the side open groove is connected with the outer hair guide groove. The side open groove includes a plurality of first side open sub-grooves and second side open sub-grooves arranged alternately. The first side open sub-grooves and the outer hair guide groove connected thereto form a "concave" shape, and the second side open sub-grooves and the outer hair guide groove connected thereto form a "convex" shape.

11. The shaving blade according to claim 10, characterized in that A plurality of the stationary knife cutting teeth arranged at intervals constitute a stationary knife cutting tooth group. Both side edges of the stationary knife panel are provided with a stationary knife cutting tooth group. The open groove is located between the two stationary knife cutting tooth groups. The stationary knife cutting teeth in the two stationary knife cutting tooth groups are relatively staggered or symmetrically arranged.

12. The shaving blade according to claim 9, characterized in that A partition block is arranged in the open groove, and the partition block divides the open groove into two to form a first open groove and a second open groove.

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