Shaving blade

Abstract

This invention discloses a razor, specifically relating to the field of blade manufacturing technology. The razor blade includes a moving blade and a stationary blade attached to the moving blade. The stationary blade has a stationary blade facet that contacts the skin and a stationary blade side plate disposed on at least one side of the stationary blade facet and connected to it. The stationary blade facet has an upward or downward curved arc shape in the orthographic projection direction of the outer surface of the stationary blade side plate, and / or the stationary blade facet has an upward or downward curved arc shape in the orthographic projection direction of either of its two ends. This invention improves the structure of the razor blade by setting the stationary blade facet to an arc shape, thereby reducing the contact area between the stationary blade cutting teeth and the skin during shaving, effectively improving the user comfort of the razor blade.

Description

Technical Field

[0001] This invention relates to the field of blade manufacturing technology, and more particularly to a shaving blade. Background Technology

[0002] Existing razors include a stationary blade and a moving blade. The stationary blade has a stationary cutting section that forms stationary blade teeth. The moving blade can move relative to the stationary blade and has two moving blades connected as a whole. Both moving blades have moving blade teeth at the same end, forming moving blade teeth that together form the moving blade cutting section that cooperates with the stationary cutting section. However, the stationary blade of this type of razor is a comb-shaped outer blade with a relatively flat outer surface, and the stationary blade teeth are almost on the same plane at the same height. This results in a large contact area between the stationary blade teeth and the skin during shaving, which significantly affects the user comfort of the razor. Summary of the Invention

[0003] The main objective of this invention is to provide a razor blade that improves the comfort of using the razor blade.

[0004] To achieve the above objectives, the present invention provides a razor blade, comprising a movable blade and a stationary blade attached to the movable blade. The stationary blade has a stationary blade panel that contacts the skin and a stationary blade side plate that is disposed on one side of the stationary blade panel and connected to the stationary blade panel. The stationary blade panel is in an arc shape that is curved upward or downward in the orthographic projection direction of the outer surface of the stationary blade side plate, and / or the stationary blade panel is in an arc shape that is curved upward or downward in the orthographic projection direction of either of its two ends.

[0005] Optionally, when the stationary blade panel is in an upwardly curved arc shape in the orthographic projection direction at either end, the distance between the highest and lowest points of the projected arc on the outer surface of the stationary blade panel is less than or equal to 3 mm.

[0006] Optionally, the distance between the highest and lowest points of the projected arc on the outer surface of the stationary blade panel is between 0.3 and 1 mm.

[0007] Optionally, when the stationary blade panel is in an upwardly curved arc shape in the orthographic projection direction of the outer surface of the stationary blade side plate, the radius of the projected arc of the outer surface of the stationary blade panel is between 100 and 500 mm.

[0008] Optionally, the radius of the projected arc on the outer surface of the stationary blade panel is between 200 and 250 mm.

[0009] Optionally, the moving blade includes a moving blade body, which has a moving blade panel that fits against the stationary blade panel and a moving blade side plate that is at least disposed on one side of the moving blade panel and connected to the moving blade panel. The moving blade panel is provided with a plurality of moving blade cutting teeth arranged at intervals to form a moving blade cutting tooth group. A moving blade cutting groove is formed between two adjacent moving blade cutting teeth. The moving blade panel is in an arc shape that is curved upward or downward in the orthographic projection direction at either end.

[0010] Optionally, the moving blade panel has an isolation block extending along its length in the middle, which divides each moving blade cutting groove into two parts to form a first moving blade cutting groove and a second moving blade cutting groove.

[0011] Optionally, the moving blade side plate is provided with an extension groove that communicates with the moving blade cutting groove, and the moving blade cutting teeth are arranged in an arch shape.

[0012] Optionally, a plurality of spaced-apart stationary cutting teeth are provided at at least one edge of the stationary blade panel, and an outward-facing hair guide groove is formed between two adjacent stationary blade cutting teeth. An open groove is provided in the stationary blade panel to allow hair to move along the length of the stationary blade panel. An inner hair guide groove is provided in each of the stationary blade cutting teeth, with an inward-facing opening that communicates with the open groove.

[0013] Optionally, a side opening groove is provided on the stationary blade side plate. The side opening groove is connected to the outer guide groove. The side opening groove includes a plurality of staggered first side opening sub-grooves and second side opening sub-grooves. The first side opening sub-grooves and the outer guide groove they communicate with form a "U" shape, and the second side opening sub-grooves and the outer guide groove they communicate with form a "T" shape.

[0014] Optionally, a number of spaced-apart stationary cutting teeth constitute a stationary cutting tooth group. Both sides of the stationary knife panel are provided with stationary cutting tooth groups. The open slot is located between two stationary cutting tooth groups. The stationary cutting teeth in the two stationary cutting tooth groups are relatively staggered or symmetrically arranged.

[0015] Optionally, the open slot is provided with a partition block, which divides the open slot into two parts to form a first open slot and a second open slot.

[0016] In the technical solution of this invention, the razor blade has a stationary blade panel that contacts the skin and a stationary blade side plate that is at least disposed on one side of the stationary blade panel and connected to the stationary blade panel. A plurality of spaced-apart stationary blade cutting teeth are provided at the edge of the stationary blade panel. The stationary blade panel is curved upwards or downwards in the orthographic projection direction of the outer surface of the stationary blade side plate, and / or the stationary blade panel is curved upwards or downwards in the orthographic projection direction of either end. This makes each stationary blade cutting tooth arc-shaped, with each part of the cutting tooth at a different height. During shaving, the cutting teeth only partially contact the skin, reducing the contact area between the cutting teeth and the skin, effectively improving the comfort of using the razor blade. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the shaving blade of the present invention;

[0019] Figure 2 This is an exploded view of an embodiment of the shaving blade of the present invention;

[0020] Figure 3 This is an orthographic projection of the stationary blade on the outer surface of the stationary blade side plate in one embodiment of the shaving blade of the present invention;

[0021] Figure 4 This is an orthographic projection of either end of the stationary blade in one embodiment of the shaving blade of the present invention.

[0022] Figure 5 This is an orthographic projection of the stationary blade on the outer surface of the stationary blade side plate in another embodiment of the shaving blade of the present invention;

[0023] Figure 6 This is an orthographic projection of either end of the stationary blade in another embodiment of the shaving blade of the present invention.

[0024] Figure 7 This is a schematic diagram of the static blade in another embodiment of the shaving blade of the present invention;

[0025] Figure 8 This is a schematic diagram of the moving blade structure in one embodiment of the shaving blade of the present invention;

[0026] Figure 9 This is an orthographic projection view of either end of the moving blade in one embodiment of the shaving blade of the present invention;

[0027] Figure 10 This is an orthographic projection of the moving blade at either end of another embodiment of the shaving blade of the present invention.

[0028] Explanation of icon numbers:

[0029] 10. Stationary blade; 20. Moving blade; 11. Stationary blade panel; 12. Stationary blade side plate; 21. Moving blade panel; 22. Moving blade side plate; 211. Moving blade cutting tooth; 212. Moving blade cutting groove; 213. Isolation block; 2121. First moving blade cutting groove; 2122. Second moving blade cutting groove; 214. Extension groove; 111. Stationary blade cutting tooth; 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. Separator block.

[0030] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the word "and / or" throughout the text means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0034] This invention proposes a shaving blade that can be applied to electric shavers, etc., and is not limited thereto.

[0035] Reference Figures 1 to 6 In some embodiments of the present invention, the shaving blade includes a stationary blade 10 and a moving blade 20. The stationary blade 10 is attached to the moving blade 20. The stationary blade 10 has a stationary blade panel 11 that contacts the skin and a stationary blade side plate 12 that is at least disposed on one side of the stationary blade panel 11 and connected to 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 curved upward or downward in the orthographic projection direction of the outer surface of the stationary blade side plate 12, and / or the stationary blade panel 11 is curved upward or downward in the orthographic projection direction of either end of its two ends.

[0036] The stationary knife panel 11 has an upward or downward curved shape in the orthographic projection direction of the outer surface of the stationary knife side plate 12. That is, when viewed from the front of the stationary knife side plate 12, the stationary knife panel 11 appears as follows: Figure 3 and Figure 5 As shown, the projection lines of the stationary blade panel 11 are either an upward-curving arch or a downward-curving concave shape. The stationary blade panel 11 has an upward-curving or downward-curving arc shape in the orthographic projection direction at either end; that is, when viewed from one end of the stationary blade panel 11, it appears as... Figure 4 and Figure 6 As shown, the projection lines of the stationary blade panel 11 in this case are either an upward-curving arch or a downward-curving concave shape.

[0037] It is understood that by adopting the above-described structure of the static blade panel 11, the static blade panel 11 is made into an arc-shaped structure, so that each static blade cutting tooth 111 on it is arc-shaped, thereby making each part of the static blade cutting tooth 111 at a different height. During the shaving process, the static blade cutting tooth 111 only partially contacts the skin, reducing the contact area between the static blade cutting tooth 111 and the skin, effectively improving the comfort of using the shaving blade.

[0038] To further improve the user experience of the razor blade and facilitate manufacturing, in one embodiment, the main reference is... Figure 4 When the stationary knife panel 11 is in the case that it is curved upward in the orthographic projection direction at either end, the distance between the highest point and the lowest point of the projection arc on the outer surface of the stationary knife panel 11 can be set to be less than or equal to 3mm, that is, the value of h2 in the figure is less than or equal to 3mm.

[0039] Preferably, in this embodiment, the distance between the highest and lowest points of the projected arc of the outer surface of the stationary blade panel 11 can be between 0.3 and 1 mm. This ensures that the contact area between the stationary blade cutting teeth 111 and the skin is at a moderate level, guaranteeing both the effectiveness and efficiency of shaving while also providing smoothness and improving user comfort.

[0040] In another embodiment, primarily referring to Figure 3 When the stationary blade panel 11 is curved upward in the direction of the orthographic projection of the outer surface of the stationary blade side plate 12, the radius of the projected arc of the outer surface of the stationary 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 using the razor blade and facilitate production and processing.

[0041] Preferably, in this embodiment, the radius of the projected arc of the outer surface of the stationary blade panel 11 can be between 200 and 250 mm. This ensures that the contact area between the stationary blade cutting teeth 111 and the skin is at a moderate level, guaranteeing both shaving effectiveness and efficiency while also providing comfort. Specifically, within this range, the teeth of the stationary blade 10 can better conform to the skin surface, being neither too sharp nor too flat. If the arc is too large, the skin-feeling will be poor when shaving facial hair, as the contact area is too large and shaving will be unsmooth; additionally, shaving hair on the neck will be inconvenient, as the neck produces less oil and requires less contact for a smooth shave. If the arc is too small, the shaving contact area will be too small, resulting in lower facial shaving efficiency; furthermore, if the arc is too small, the razor's running arc will have a large height difference, leading to unstable operation and affecting sharpness.

[0042] To further improve the overall user comfort of the razor blade and reduce the risk of skin irritation, this invention also improves the moving blade 20 of the razor blade. Please refer to... Figure 1 and Figure 2 , Figures 8 to 10 In some embodiments of the present invention, the moving blade 20 may include a moving blade body, which has a moving blade panel 21 that is fitted to the stationary blade panel 11 and a moving blade side plate 22 that is disposed on one side of the moving blade panel 21 and connected to the moving blade panel 21. The moving blade panel 21 is provided with a plurality of spaced moving blade cutting teeth 211 to form a moving blade cutting tooth group, and a moving blade cutting groove 212 is formed between two adjacent moving blade cutting teeth 211. (See main reference...) Figure 9 and Figure 10 The moving blade panel 21 has an arc shape that is curved upward or downward in the orthographic projection direction at either end.

[0043] In this embodiment, the moving blade panel 21 has an arc shape that curves upward or downward in the orthographic projection direction at either end. That is, when viewed from one end of the moving blade panel 21, it appears as... Figure 9and Figure 10 As shown, the projection lines of the moving blade panel 21 are either an upward-curving arch or a downward-curving concave shape.

[0044] It is understood that by making the moving blade panel 21 into an arc-shaped structure, the moving blade cutting teeth 211 on it are arc-shaped, thereby placing each part of the moving blade cutting teeth 211 at a different height. During the shaving process, the moving blade cutting teeth 211 only partially contact the skin, reducing the contact area between the moving blade cutting teeth 211 and the skin, effectively improving the comfort of using the shaving blade, and reducing the risk of the moving blade 20 scratching the skin.

[0045] Reference Figure 8 In one embodiment, the moving blade panel 21 has an isolation block 213 extending along its length in the middle. The isolation block 213 divides each moving blade cutting groove 212 into two parts to form a first moving blade cutting groove 2121 and a second moving blade cutting groove 2122.

[0046] This invention adds an isolation block 213 to the moving blade panel 21. The isolation block 213 extends from the middle of one end of the moving blade panel 21 to the middle of the other end and is laterally disposed on the moving blade panel 21, thereby connecting the moving blade cutting teeth 211 on both sides of the moving blade panel 21 in its width direction. This results in a continuous planar structure in the middle of the moving blade panel 21, which reduces the risk of skin abrasion during shaving and speeds up hair cutting, thus improving shaving efficiency. In addition, the isolation block 213 on the moving blade panel 21 also improves the overall strength of the moving blade panel 21, thereby enhancing the deformation resistance of the shaver's moving blade 20.

[0047] Reference Figure 8 In one embodiment, the moving blade side plate 22 may be provided with an extension groove 214 that communicates with the moving blade cutting groove 212, and the moving blade cutting teeth 211 are concave or arched. In this way, the moving blade cutting groove 212 and the extension groove 214 communicate to form the entire moving blade 20 tooth groove. The moving blade 20 tooth groove is a three-dimensional spatial structure, which allows the moving blade 20 tooth groove to correspond to the tooth groove of the stationary blade 10, thereby ensuring that the hair can smoothly enter the moving blade 20 tooth groove after entering the tooth groove of the stationary blade 10, thereby realizing hair cutting.

[0048] Additionally, refer to Figure 1 and Figure 2 In some embodiments, at least one edge of the stationary blade panel 11 is provided with a plurality of spaced stationary blade cutting teeth 111, and an outward-facing hair guide groove 112 is formed between two adjacent stationary blade cutting teeth 111. An open groove 113 is provided in the stationary blade panel 11 to allow hair to move along the length direction of the stationary blade panel 11. An inner hair guide groove 114 is provided in each stationary blade cutting tooth 111 to communicate with the open groove 113.

[0049] In this embodiment, by providing an open groove 113 in the stationary blade panel 11 and an inner hair guide groove 114 in the stationary blade cutting teeth 111, the hair can move not only along the length direction of the stationary blade panel 11 in the open groove 113, but also along the width direction of the stationary blade panel 11 in the inner hair guide groove 114 during shaving. That is, the shaver can guide and capture hair not only in the width direction of the stationary blade panel 11, but also in the length direction of the stationary blade panel 11, which greatly improves the ability to guide and capture hair, thereby improving the shaving effect of the shaver blade.

[0050] Main reference Figure 2 and Figure 7 In some embodiments, a side opening groove 121 may be provided on the stationary blade side plate 12. The side opening groove 121 is connected to the outer hair guide groove 112. The side opening groove 121 includes a plurality of staggered first side opening sub-grooves 1211 and second side opening sub-grooves 1212. The first side opening sub-grooves 1211 and the outer hair guide groove 112 they communicate with form a "U" shape, and the second side opening sub-grooves 1212 and the outer hair guide groove 112 they communicate with form a "T" shape. In this way, the hair introduction and capture effect can be effectively improved.

[0051] In this embodiment, a number of spaced-apart stationary blade cutting teeth 111 constitute a stationary blade cutting tooth group. To further improve the shaving effect, stationary blade cutting tooth groups can be provided on both sides of the stationary blade panel 11. The open slot 113 is located between two stationary blade cutting tooth groups, and the stationary blade cutting teeth 111 in the two stationary blade cutting tooth groups are relatively staggered or symmetrically arranged.

[0052] In this embodiment, several side-open slots 121 can be evenly spaced on the stationary blade side plate 12 to ensure the uniformity of hair cutting during the hair cutting process, and can effectively prevent hair from entering the mounting slot of the stationary blade side plate 12 and causing fuzzing, which would affect the user experience.

[0053] Reference Figure 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 parts to form a first open slot and a second open slot. The partition block 115 extends along the length direction of the stationary knife panel 11.

[0054] By adding a partition block 115 to the stationary blade panel 11, the present invention can relatively restrict the movement space of hair along the width direction of the open groove 113, which can accelerate the entry of hair into the inner hair guide groove 114, thereby improving the shaving efficiency; in addition, setting the partition block 115 on the stationary blade panel 11 can also improve the overall strength of the stationary blade panel 11, thereby improving the deformation resistance of the stationary blade 10.

[0055] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A razor blade, comprising a movable blade and a stationary blade attached to the movable blade, the stationary blade having a stationary blade faceplate in contact with the skin and a stationary blade side plate disposed on one side of the stationary blade faceplate and connected to the stationary blade faceplate, characterized in that, The stationary blade panel is in an arc shape that is curved upward or downward in the orthographic projection direction of the outer surface of the stationary blade side plate, and / or the stationary blade panel is in an arc shape that is curved upward or downward in the orthographic projection direction of either of its two ends. The moving blade includes a moving blade body, which has a moving blade panel that is attached to the stationary blade panel and a moving blade side plate that is at least disposed on one side of the moving blade panel and connected to the moving blade panel. The moving blade panel is provided with a plurality of moving blade cutting teeth arranged at intervals to form a moving blade cutting tooth group. A moving blade cutting groove is formed between two adjacent moving blade cutting teeth. The moving blade panel is in an arc shape that is curved upward or downward in the orthographic projection direction at either end.

2. The razor blade according to claim 1, characterized in that, When the stationary blade panel is curved upwards in the orthographic projection direction at either end, the distance between the highest and lowest points of the projected arc on the outer surface of the stationary blade panel is less than or equal to 3 mm.

3. The razor blade according to claim 1, characterized in that, The distance between the highest and lowest points of the projected arc on the outer surface of the static blade panel is between 0.3 and 1 mm.

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

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

6. The razor blade according to claim 1, characterized in that, The moving blade panel has an isolation block extending along its length in the middle, which divides each moving blade cutting groove into two parts to form a first moving blade cutting groove and a second moving blade cutting groove.

7. The razor blade according to claim 1, characterized in that, The moving blade side plate is provided with an extension groove that communicates with the moving blade cutting groove, and the moving blade cutting teeth are arranged in an arch shape.

8. The razor blade according to claim 1, characterized in that, At least one edge of the stationary blade panel is provided with a plurality of spaced stationary blade cutting teeth, and an outward-facing hair guide groove is formed between two adjacent stationary blade cutting teeth. An open groove is provided in the stationary blade panel to allow hair to move along the length of the stationary blade panel. An inner hair guide groove is provided in each stationary blade cutting tooth and is connected to the open groove with an inward-facing opening.

9. The razor blade according to claim 8, characterized in that, A side opening groove is provided on the stationary knife side plate. The side opening groove is connected to the outer guide groove. The side opening groove includes a plurality of staggered first side opening sub-grooves and second side opening sub-grooves. The first side opening sub-grooves and the outer guide groove they communicate with form a "U" shape, and the second side opening sub-grooves and the outer guide groove they communicate with form a "T" shape.

10. The razor blade according to claim 9, characterized in that, A number of spaced-apart stationary cutting teeth constitute a stationary cutting tooth group. Both sides of the stationary knife panel are provided with stationary cutting tooth groups. The open slot is located between two stationary cutting tooth groups. The stationary cutting teeth in the two stationary cutting tooth groups are relatively staggered or symmetrically arranged.

11. The razor blade according to claim 8, characterized in that, The open slot is provided with a dividing block, which divides the open slot into two parts to form a first open slot and a second open slot.

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