Rotary electric shaver head

Abstract

The utility model discloses a rotary electric shaver head which comprises a shaver net cover and a rotary moving knife made of ceramic materials, the shaver net cover covers the upper end face of the rotary moving knife, the rotary moving knife comprises a rotary knife rest, the rotary knife rest comprises a central disc and a rotary outer ring, and the central disc is fixedly connected with the rotary outer ring through a plurality of knife rest connecting blocks. A plurality of outer ring cutter bodies are uniformly arranged around the outer edge of the rotating outer ring, a plurality of inner ring cutter bodies are uniformly arranged on the cutter rest connecting block, the outer ring cutter bodies and the inner ring cutter bodies are alternately distributed at intervals, the outer ring cutter bodies and the inner ring cutter bodies are consistent in shape, and each of the outer ring cutter bodies and the inner ring cutter bodies comprises a cutter foot part and a cutting edge part. The length of the cutter foot part is not smaller than one fourth of the radius of the rotary cutter rest, the width of the cutter foot part is not smaller than one seventh of the radius of the rotary cutter rest, and a triangular supporting structure is formed between the cutter foot part and the cutting edge part. The durability of the ceramic tool bit is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of shaver technology, and in particular to a rotary electric shaver head. Background Technology

[0002] A rotary electric shaver is an electric shaver that shaves by rotating its head. The head rotates at high speed around a central point to adapt to facial contours and effectively remove beard hair. The working principle of a rotary electric shaver is based on the rotational motion of the head; this design allows the head to better conform to facial contours, thus improving shaving efficiency and comfort.

[0003] Traditional rotary electric shaver heads are typically made of stainless steel. While stainless steel offers advantages such as corrosion resistance and ease of cleaning, the blades will still gradually wear down over time. This wear dulls the blades, affecting shaving performance and comfort. To address this issue, existing technology has developed rotary electric shaver heads made of ceramic. Compared to stainless steel heads, ceramic heads are harder, offer better cutting power, and are less prone to wear. With continued use, ceramic heads can even become sharper with repeated sharpening.

[0004] However, in order to save materials, the ceramic blades in existing rotary electric shaver heads are designed with thin and elongated blades. This shape results in insufficient structural strength. Since ceramic is brittle, the blades with insufficient structural strength are very easy to break during rotation. Therefore, the durability of ceramic blades in the prior art is poor. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a rotary electric shaver head that significantly improves the durability of ceramic shaver heads.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary electric shaver head, comprising a blade mesh cover and a rotary blade made of ceramic material, wherein the blade mesh cover is disposed on the upper end surface of the rotary blade, and the rotary blade includes a rotary blade holder, wherein the rotary blade holder includes a central disc and a rotating outer ring, and the central disc and the rotating outer ring are fixedly connected by a plurality of blade holder connecting blocks;

[0007] Multiple outer ring cutter bodies are evenly arranged around the outer edge of the rotating outer ring, and multiple inner ring cutter bodies are evenly arranged on the tool holder connecting block. The outer ring cutter bodies and the inner ring cutter bodies are alternately distributed. The outer ring cutter bodies and the inner ring cutter bodies have the same shape. The inner ring cutter bodies and the outer ring cutter bodies include a foot portion and a cutting edge portion. The length of the foot portion is not less than one-quarter of the radius of the rotating tool holder, and the width of the foot portion is not less than one-seventh of the radius of the rotating tool holder. A triangular support structure is formed between the foot portion and the cutting edge portion.

[0008] Furthermore, the rotating tool holder is also provided with a plurality of cleaning through holes, each of the cleaning through holes being spaced apart from each of the tool holder connecting blocks, and the shape of the cleaning through holes being adapted to the shape of the bottom of the tool foot.

[0009] Furthermore, the length of the cleaning through hole is not less than half the radius of the rotating tool holder, and the width of the cleaning through hole is not less than one-quarter of the radius of the rotating tool holder.

[0010] Furthermore, the angle between the inclined surface of the triangular support structure and the plane where the tool holder connecting block is located is 45°.

[0011] Furthermore, the blade extends from the end of the triangular support structure at an angle in a counterclockwise direction.

[0012] Furthermore, an arc-shaped chip guide groove is provided between the cutting edge and the inclined surface of the triangular support structure.

[0013] Furthermore, the blade tip angle is 45°.

[0014] Furthermore, the shaving mesh cover has multiple evenly distributed shaving grooves. When the shaving mesh cover is placed over the upper surface of the rotating blade, the position of each shaving groove corresponds to the position of the inner ring blade and the outer ring blade.

[0015] The beneficial effects of this utility model are:

[0016] This invention sets the length of the cutting foot portion of the inner and outer ring cutting bodies to be no less than one-quarter of the radius of the rotating tool holder, and sets the width of the cutting foot portion to be no less than one-seventh of the radius of the rotating tool holder. Compared with the prior art, the length and width of the cutting foot portion are significantly increased, and the inner and outer ring cutting bodies can obtain sufficient bottom support. Therefore, the structural strength is improved and it is not easy to break, and the durability of the cutting head is significantly improved. Attached Figure Description

[0017] Figure 1 This is a perspective view of the rotating tool holder in this utility model;

[0018] Figure 2 This is an exploded view of the rotary electric shaver head in this utility model;

[0019] Figure 3 This is a top view of the rotating tool holder in this utility model;

[0020] Figure 4 This is a side sectional view of the rotary electric shaver head in this utility model.

[0021] Reference numerals: 1. Blade cover; 2. Rotating blade holder; 21. Center plate; 22. Rotating outer ring; 23. Blade holder connecting block; 3. Outer ring blade body; 4. Inner ring blade body; 5. Blade foot; 6. Blade edge; 7. Triangular support structure; 8. Cleaning through hole; 9. Chip guide groove; 10. Shaving groove. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] Example 1, referring to Figure 1 and Figure 2 This is the first embodiment of the present invention. This embodiment provides a rotary electric shaver head that can significantly improve the durability of ceramic shaver heads. It includes a shaver cover 1 and a rotary blade made of ceramic material. The shaver cover 1 covers the upper end face of the rotary blade. The rotary blade includes a rotary blade holder 2. The rotary blade holder 2 includes a central disk 21 and a rotating outer ring 22. The central disk 21 and the rotating outer ring 22 are fixedly connected by a plurality of blade holder connecting blocks 23.

[0024] Multiple outer ring cutter bodies 3 are evenly arranged around the outer edge of the rotating outer ring 22, and multiple inner ring cutter bodies 4 are evenly arranged on the tool holder connecting block 23. The outer ring cutter bodies 3 and the inner ring cutter bodies 4 are alternately distributed. The outer ring cutter bodies 3 and the inner ring cutter bodies 4 have the same shape. The inner ring cutter bodies 4 and the outer ring cutter bodies 3 include a foot part 5 and a cutting edge part 6. The length of the foot part 5 is not less than one-quarter of the radius of the rotating tool holder 2, and the width of the foot part 5 is not less than one-seventh of the radius of the rotating tool holder 2. A triangular support structure 7 is formed between the foot part 5 and the cutting edge part 6.

[0025] Working principle of Example 1:

[0026] In this embodiment, the rotary cutting tool is made of zirconia ceramic. Zirconia ceramic has extremely high hardness, approaching that of natural diamond, which gives it the high wear resistance required for a rotary cutting tool. The bending and tensile strength of zirconia ceramic is several times, even tens of times, greater than that of steel, providing extremely high mechanical strength. Zirconia ceramic also possesses high toughness, high-temperature resistance, and corrosion resistance. Therefore, rotary cutting tools made of zirconia ceramic have a longer service life due to the excellent material properties.

[0027] In this embodiment, multiple outer ring blades 3 and multiple inner ring blades 4 are arranged alternately on the rotating blade holder 2 to achieve alternating cutting of externally entering beard hairs, thereby improving the cutting effect.

[0028] In this embodiment, the multiple tool holder connecting blocks 23 arranged between the central disk 21 and the rotating outer ring 22 not only serve as a fixed connection between the central disk 21 and the rotating outer ring 22, but also support and fix each inner ring tool body 4.

[0029] In this embodiment, the length of the cutting foot 5 is 2.05 mm, the width of the cutting foot 5 is 1.19 mm, and the radius of the rotating tool holder 2 is 7.69 mm. By setting the length of the cutting foot 5 of the inner ring tool body 4 and the outer ring tool body 3 to be no less than one-quarter of the radius of the rotating tool holder 2, and setting the width of the cutting foot 5 to be no less than one-seventh of the radius of the rotating tool holder 2, compared with the prior art, the length and width of the cutting foot 5 are significantly increased. The inner ring tool body 4 and the outer ring tool body 3 can obtain sufficient bottom support, thus improving the structural strength and making it less prone to breakage, thereby significantly improving the durability of the cutting head.

[0030] In this embodiment, a triangular support structure 7 is provided between the blade edge 6 and the blade foot 5. The stability of the triangular structure is used to improve the structural stability between the blade foot 5 and the blade edge 6, thereby further improving the structural strength.

[0031] Example 2, refer to Figure 3 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides multiple cleaning through holes 8, which can significantly improve the cleaning performance of the rotating tool holder 2 while ensuring structural strength. The rotating tool holder 2 is also provided with multiple cleaning through holes 8. Each cleaning through hole 8 is spaced apart from each tool holder connecting block 23. The shape of the cleaning through hole 8 is adapted to the shape of the bottom of the tool foot 5.

[0032] Preferably, the length of the cleaning through hole 8 is not less than half the radius of the rotating tool holder 2, and the width of the cleaning through hole 8 is not less than one-quarter of the radius of the rotating tool holder 2.

[0033] Working principle of Example 2:

[0034] The length of the cleaning through hole 8 is 4.47 mm, and the width of the cleaning through hole 8 is 1.92 mm. By setting multiple cleaning through holes 8 through the rotating blade holder 2 and limiting the length and width of the cleaning through holes 8, the length of the cleaning through hole 8 is not less than half the radius of the rotating blade holder 2, and the width of the cleaning through hole 8 is not less than one-quarter of the radius of the rotating blade holder 2. Under the premise of ensuring that the width of the blade holder connecting block 23 is sufficient and the structural strength of the rotating blade holder 2 is sufficient, the area of ​​the cleaning through hole 8 is maximized, which facilitates cleaning of the rotating blade holder 2, reduces the growth of bacteria, and improves the cleaning performance of the rotating blade holder 2.

[0035] Preferably, the angle between the inclined surface of the triangular support structure 7 and the plane where the tool holder connecting block 23 is located is 45°.

[0036] Specifically, in this embodiment, when the angle between the inclined surface of the triangular support structure 7 and the plane where the tool holder connecting block 23 is located is 45°, the shape of the triangular support structure 7 is approximately an isosceles right triangle. At this time, the structural strength of the triangular support structure 7 is the highest, and it can provide the best support effect.

[0037] Preferably, the blade portion 6 extends from the end of the triangular support structure 7 at an angle in a counterclockwise direction.

[0038] Specifically, in this embodiment, when the blade 6 extends from the end of the triangular support structure 7 in a counterclockwise direction, it can form a better cutting plane when it cooperates with the inner wall of the top of the blade cover 1, thereby improving the cutting effect on the beard.

[0039] Preferably, an arc-shaped chip guide groove 9 is provided between the cutting edge 6 and the inclined surface of the triangular support structure 7.

[0040] Specifically, in this embodiment, by setting an arc-shaped chip guide groove 9, it is beneficial for the beard debris to flow out from the chip guide groove 9 after the blade part 6 cuts the beard, thereby improving the processing efficiency of beard debris.

[0041] Preferably, the blade tip angle of the blade portion 6 is 45°.

[0042] Specifically, in this embodiment, when the blade tip angle of the blade part 6 is 45°, the cutting efficiency of the beard is maximized when the blade part 6 cooperates with the inner wall of the top of the blade cover 1.

[0043] Preferred, such as Figure 4 As shown, the shaving mesh cover 1 has multiple evenly distributed shaving grooves 10. When the shaving mesh cover 1 is placed over the upper surface of the rotating blade, the position of each shaving groove 10 corresponds to the position of the inner ring blade 4 and the outer ring blade 3.

[0044] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A rotary electric shaver head, characterized by: The device includes a blade cover (1) and a rotating blade made of ceramic material. The blade cover (1) covers the upper end face of the rotating blade. The rotating blade includes a rotating blade holder (2). The rotating blade holder (2) includes a central disk (21) and a rotating outer ring (22). The central disk (21) and the rotating outer ring (22) are fixedly connected by multiple blade holder connecting blocks (23). Multiple outer ring cutter bodies (3) are uniformly arranged around the outer edge of the rotating outer ring (22), and multiple inner ring cutter bodies (4) are uniformly arranged on the tool holder connecting block (23). The outer ring cutter bodies (3) and the inner ring cutter bodies (4) are alternately distributed. The outer ring cutter bodies (3) and the inner ring cutter bodies (4) have the same shape. The outer ring cutter bodies (3) and the inner ring cutter bodies (4) include a foot part (5) and a cutting edge part (6). The length of the foot part (5) is not less than one-quarter of the radius of the rotating tool holder (2), and the width of the foot part (5) is not less than one-seventh of the radius of the rotating tool holder (2). A triangular support structure (7) is formed between the foot part (5) and the cutting edge part (6).

2. A rotary electric shaver head according to claim 1 characterized in that: The rotating tool holder (2) is also provided with a plurality of cleaning through holes (8), each of the cleaning through holes (8) and each of the tool holder connecting blocks (23) are spaced apart, and the shape of the cleaning through holes (8) is adapted to the shape of the bottom of the tool foot (5).

3. A rotary electric shaver head according to claim 2, characterized in that: The length of the cleaning through hole (8) is not less than half the radius of the rotating tool holder (2), and the width of the cleaning through hole (8) is not less than one-quarter of the radius of the rotating tool holder (2).

4. A rotary electric shaver head according to claim 1 characterized in that: The angle between the inclined surface of the triangular support structure (7) and the plane where the tool holder connecting block (23) is located is 45°.

5. The rotary electric shaver head of claim 1, wherein: The blade (6) extends from the end of the triangular support structure (7) at an angle in a counterclockwise direction.

6. A rotary electric shaver head according to claim 1 characterized in that: An arc-shaped chip guide groove (9) is provided between the blade part (6) and the inclined surface of the triangular support structure (7).

7. A rotary electric shaver head according to claim 1 characterized in that: The blade tip angle of the blade portion (6) is 45°.

8. The rotary electric shaver head of claim 1, wherein: The blade cover (1) has a plurality of evenly distributed shaving grooves (10). When the blade cover (1) covers the upper end surface of the rotating blade, the position of each of the shaving grooves (10) corresponds to the position of the inner ring blade body (4) and the outer ring blade body (3).

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