A shaver head

Abstract

The utility model discloses a shaver head, including rigid fixed knife and base, fixed knife is fixed above base, the below of fixed knife is equipped with the reciprocating motion of left and right movable cutter component, fixed knife includes fixed knife body, be equipped with a plurality of side fixed knife tooth on the front side and / or rear side of fixed knife body, a plurality of side fixed knife tooth on every side is arranged along left and right directions, the left and right ends of fixed knife body are equipped with fixed knife end portion respectively located a plurality of side fixed knife tooth outside, the base includes the base end portion located left and right two ends, correspond to the side fixed knife tooth of every side, be equipped with from the concave clearance of the front side and / or rear side of base between left and right base end portion, set up clearance and make side fixed knife tooth expose from below base and hang in the outside of base, the outside of base end portion and fixed knife end portion alignment or basically alignment, fixed knife end portion has smooth outside, and with top surface smooth transition. This cutter head simple structure, skin feel is good.

Description

[Technical Field]

[0001] This utility model relates to a shaver blade. [Background Technology]

[0002] In some existing shavers, such as the structure disclosed in patent CN212287726U entitled "A Reciprocating Electric Shaver Head with a Rigid Fixed Blade," the fixed blade and its support form an open structure at both ends. This can easily irritate the skin and affect the shaving experience when shaving areas such as the armpits and inner thighs. Furthermore, when the support arm and fixed blade are welded together, the weld points are easily exposed and come into contact with the skin. Additionally, the fixed blade is usually formed by stamping sheet metal, and its cutting teeth are generally also formed during the stamping process. This process limits the sharpness of the cutting teeth. While etching can be used to improve sharpness, the fixed blade requires a certain thickness to maintain rigidity, and thicker material reduces etching efficiency and increases manufacturing costs.

[0003] This utility model is an improvement made based on this situation. [Utility Model Content]

[0004] The technical problem to be solved by this utility model is to provide a shaver head with a simple structure and good skin feel.

[0005] To solve the above-mentioned technical problems, this utility model provides a shaver head, including a rigid fixed blade and a base. The fixed blade is fixed above the base, and a movable blade assembly capable of reciprocating left and right is provided below the fixed blade. The fixed blade includes a fixed blade body, and multiple side fixed blade teeth are provided on the front and / or rear sides of the fixed blade body. The multiple side fixed blade teeth on each side are arranged in a left-right direction. Fixed blade ends located outside the multiple side fixed blade teeth are respectively provided on the left and right ends of the fixed blade body. The base includes base ends located on the left and right ends. Corresponding to the side fixed blade teeth on each side, a recessed clearance groove is provided between the left and right base ends, extending inward from the front and / or rear sides of the base. The clearance groove allows the side fixed blade teeth to protrude from below the base and suspend outside the base. The outer surfaces of the base ends and the fixed blade ends are aligned or substantially aligned. The fixed blade ends have smooth outer surfaces, and the outer surfaces of the fixed blade ends smoothly transition to the top surface.

[0006] As described above, in a shaver head, the outer surface of the fixed blade end forms a U-shape or C-shape from front to back, and the corresponding outer surface of the base end also has a U-shape or C-shape. The lowest end of the fixed blade body has a bottom plane, the side fixed blade teeth and the bottom surface of the fixed blade end are coplanar with the bottom plane, the top surface of the base end is close to or attached to the bottom surface of the fixed blade end, and the outer edge of the top surface of the base end is aligned or substantially aligned with the outer edge of the bottom surface of the fixed blade end.

[0007] As described above, in a shaver head, the moving blade assembly includes a moving blade with side moving teeth on its front and / or rear sides for engaging with side fixed blade teeth to cut hair. The base includes a base body, with the end of the base protruding upwards above the base body to form a space between the base body and the fixed blade to accommodate the moving blade and allow it to move left and right. A first welding part is provided on the inner side of the end of the base, and a second welding part is provided on the bottom of the fixed blade for laser welding with the first welding part. The second welding part is located on the inner side of the outer side of the end of the fixed blade. The base has a laser through hole for the first welding part to protrude from the bottom of the base so that a laser can enter and weld the first welding part to the second welding part.

[0008] As described above, in a shaver head, the bottom of the fixed blade has upwardly recessed fixed blade positioning holes on the inner sides of the left and right ends, and the top of the base has a positioning post that is inserted upward into the fixed blade positioning hole.

[0009] In the shaver head described above, the side wall of the positioning post serves as the first welding part, the outer side of the fixed blade positioning hole serves as the second welding part, the positioning post is integrally formed with the base, or the positioning post is an independent component, the upper end of which is inserted into the fixed blade positioning hole and welded to the fixed blade, and the lower end is pressed onto the base from bottom to top.

[0010] As described above, in a shaver head, the left and right ends of the moving blade are respectively provided with concave clearance grooves, and the positioning post is set in the left and right direction corresponding to the clearance grooves.

[0011] As described above, a shaver head has a support structure below the moving blade for supporting the moving blade. The moving blade is a plate-shaped structure. The support structure includes a support bar arranged on the base body in the left-right direction, and / or a ball bearing that can roll on the base body.

[0012] As described above, in a shaver head, the bottom of the moving blade is fixed with a moving blade bracket, and a drive connector is fixed on the moving blade bracket. The middle part of the base is provided with a movable groove from left to right for the moving blade bracket to move left and right. The left and right ends of the movable groove are respectively provided with first welding parts. The left and right ends of the movable groove respectively penetrate the base downward to form laser passage holes.

[0013] As described above, in a shaver head, the base is formed by powder metallurgy, and the bottom of the base is integrally formed with a downwardly extending rotating connection part. The rotating connection part is provided with a rotating connection hole. A bottom cover is provided below the base, and the bottom cover covers the first welding part from below. The bottom cover has a bottom cover hole in the middle for the rotating connection part to pass through downward. The rotating connection part is provided with a buckle to fix the bottom cover to the base.

[0014] As described above, in a shaver head, the fixed blade body is formed by powder metallurgy, and the left and right sides of the side fixed blade teeth each have an acute-angled blade, the angle of the blade a ≤ 70°, and the side fixed blade teeth and the fixed blade body are integrally injection molded.

[0015] As described above, in a shaver head, the left and right sides of the side-fixed blades are respectively provided with downward and outward inclined tooth surfaces. The tooth surface includes an upper inclined surface and a lower inclined surface. Relative to the vertical direction f, the inclination angle of the lower inclined surface is greater than the inclination angle of the upper inclined surface. The lower inclined surface and the bottom surface of the side-fixed blades form an acute-angled cutting edge.

[0016] As described above, in a shaver head, the side-fixed blades have a large root width that gradually decreases towards the tip, and a large root thickness that gradually decreases towards the tip. The head of the side-fixed blades is formed into a thickened head by laser sintering, and the thickened head is larger than the tooth body of the side-fixed blades near the thickened head.

[0017] As described above, in a shaver head, the fixed blade has a central mounting hole located inside the side fixed blade teeth and the end of the fixed blade. An intermediate blade mesh protrudes upward from the central mounting hole between the base and the fixed blade. The moving blade assembly includes an intermediate blade disposed below the intermediate blade mesh and cooperating with the intermediate blade mesh to cut hair.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. This utility model uses a rigid fixed blade fixed to the base to form a strong support structure, and a moving blade assembly is placed between the fixed blade and the base to form the shaver head. This simplifies the structure of the shaver head and reduces its size. The outer side of the base end is aligned or substantially aligned with the outer side of the fixed blade end. The fixed blade end has a smooth outer side that smoothly transitions to the top surface, giving the left and right ends of the shaver head a better feel when in contact with the skin, avoiding skin irritation, and improving the user experience when shaving body parts such as armpits and inner thighs. The rigid fixed blade has rigid side fixed blade teeth, which easily hook long hairs for cutting without deformation, improving cutting stability and sharpness, and avoiding hair pulling.

[0020] 2. By providing a first welding part on the inner side of the base end and a second welding part on the bottom of the fixed knife that can be laser welded to the first welding part, the second welding part is located on the inner side of the outer side of the fixed knife end. The base is provided with a laser through hole for the first welding part to protrude from the bottom of the base so that the laser can enter and weld the first welding part to the second welding part. The fixed knife and the base are fixed by laser welding. The process is simple and convenient. After welding, the weld point of the first welding part and the second welding part is located on the inner side of the fixed knife and the base, avoiding contact with the skin and affecting the skin feel and damaging the appearance.

[0021] 3. The fixed blade of the shaver head is formed by powder metallurgy, which facilitates the one-time molding of multiple side fixed blades and the first blade with an acute angle, as well as the smooth end of the fixed blade. The structure is simple and easy to manufacture. [Attached Image Description]

[0022] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0023] Figure 1 This is an exploded view of a shaver head according to this utility model;

[0024] Figure 2 This is a top view of the fixed blade of this utility model;

[0025] Figure 3 This is a schematic diagram of the top structure of a shaver head according to the present invention;

[0026] Figure 4 This is a schematic diagram of the bottom structure of an embodiment of the present invention, which describes a shaver head without a bottom cover.

[0027] Figure 5 This is a schematic diagram of the bottom structure of an embodiment of the present invention, which describes a shaver head with a bottom cover.

[0028] Figure 6 This utility model relates to a razor blade edge Figure 8 A cross-sectional view along the AA direction;

[0029] Figure 7 This is a schematic diagram of an embodiment of the present invention, in which the shaver head is supported by a support bar to move the blade.

[0030] Figure 8 This is a schematic diagram of an embodiment of the present invention, in which the shaver head is supported by a ball bearing.

[0031] Figure 9 This is a schematic diagram of an embodiment of the present invention, in which the shaver head is supported by an elastic element to move the blade.

[0032] Figure 10 This utility model relates to a razor blade edge Figure 6 Cross-sectional view along the BB direction;

[0033] Figure 11 This is a cross-sectional view of the side-fixed cutter teeth;

[0034] Figure 12 This is a schematic diagram of the structure of a shaver head with a central blade mesh according to the present invention;

[0035] Figure 13This is a schematic diagram of an embodiment in which the fixed blade and the base are fixed using independent positioning pins.

Detailed Implementation Methods

[0036] The present invention will be further described below with reference to the accompanying drawings:

[0037] like Figures 1 to 13 A shaver head is shown, comprising a rigid fixed blade 1 and a base 2. The fixed blade 1 is fixed above the base 2. A movable blade assembly capable of reciprocating left and right is provided below the fixed blade 1. The fixed blade 1 includes a fixed blade body 11, with multiple side fixed blade teeth 12 on the front and / or rear sides of the fixed blade body 11. The multiple side fixed blade teeth 12 on each side are arranged in a left-right direction. Fixed blade ends 17 located outside the multiple side fixed blade teeth 12 are respectively provided at the left and right ends of the fixed blade body 11. The base 2 includes base ends 21 located at the left and right ends. Corresponding to the side fixed blade teeth 12 on each side, a recessed clearance groove 22 is provided between the left and right base ends 21, extending inward from the front and / or rear sides of the base 2. The recessed groove 22 allows the side fixed blade teeth 12 to protrude from below the base 2 and suspend outside the base 2, so that the side fixed blade teeth 12 can better hook long hair for cutting. The outer side of the base end 21 is aligned or substantially aligned with the outer side of the fixed blade end 17. The fixed blade end 17 has a smooth outer side, and the outer side of the fixed blade end 17 smoothly transitions with the top surface, so that the left and right ends of the shaver head have a better skin feel when in contact with the skin, avoiding skin irritation, and improving the user experience when shaving body parts such as armpits and inner thighs. The rigid fixed blade 1 has rigid side fixed blade teeth 12, which can easily hook long hair for cutting without deformation, improving the stability and sharpness of cutting, and avoiding hair pulling.

[0038] The rigid fixed blade 1 is fixed on the base 2 to form a strong support structure, and the moving blade assembly is placed between the fixed blade 1 and the base 2 to form the shaver head, which helps to simplify the structure of the shaver head and reduce its size.

[0039] Preferably, to better improve the smoothness and skin feel of the left and right ends of the shaver head, the outer surface of the fixed blade end 17 forms a U-shape or C-shape structure from front to back, and the corresponding outer surface of the base end 21 has a U-shape or C-shape structure. The lowest end of the fixed blade body 11 has a bottom end plane 16. The bottom surfaces of the side fixed blade teeth 12 and the fixed blade end 17 are coplanar with the bottom end plane 16. The top surface of the base end 21 is close to or attached to the bottom surface of the fixed blade end 17, and the outer edge 211 of the top surface of the base end 21 is aligned or substantially aligned with the outer edge 171 of the bottom surface of the fixed blade end 17. Preferably, the gap between the top surface of the base end 21 and the bottom surface of the fixed blade end 17 is less than 0.1 mm.

[0040] Since the bottom surfaces of the multiple side fixed cutter teeth 12 need to be ground flat as a whole to better ensure the sharpness of cutting when they cooperate with the side moving cutter teeth 41, the bottom surfaces of the side fixed cutter teeth 12 and the fixed cutter end 17 are coplanar with the bottom end plane 16, so that the bottom of the fixed cutter 1 can be ground on a whole plane, and at the same time, the bottom surfaces of the side fixed cutter teeth 12 and the bottom surfaces of the fixed cutter end 17 are flat, simplifying the processing technology of the fixed cutter.

[0041] Preferably, the moving blade assembly includes a moving blade 4, which has side moving blade teeth 41 on its front and / or rear sides for cooperating with the side fixed blade teeth 12 to cut hair. The base 2 includes a base body 20, and the base end 21 protrudes upward above the base body 20 to form a space between the base body 20 and the fixed blade 1 to accommodate the moving blade 4 and allow the moving blade 4 to move left and right. The base 2 has a first welding part 23 on the inner side of the base end 21, and the bottom of the fixed blade 1 has a second welding part 18 that can be laser welded to the first welding part 23. The second welding part 18 is located on the inner side of the outer side of the fixed blade end 17. The base 2 has a laser through hole 24 for the first welding part 23 to be exposed from the bottom of the base 2 so that the laser can enter and weld the first welding part 23 to the second welding part 18. The welding point of the first welding part 23 and the second welding part 18 is located on the inner side of the fixed blade 1 and the base 2, so as to avoid exposure to the skin, affecting the skin feel and damaging the appearance.

[0042] Preferably, the bottom of the fixed blade 1 is provided with upwardly recessed fixed blade positioning holes 19 on the inner sides of the left and right ends, and the top of the base 2 is provided with a positioning post 23a that is inserted upward into the fixed blade positioning holes 19, so as to facilitate laser welding of the first welding part 23 and the second welding part 18 after the fixed blade 1 and the base 2 are positioned and installed.

[0043] Preferably, the sidewall of the positioning post 23a serves as the first welding part 23, and the outer side of the fixed blade positioning hole 19 serves as the second welding part 18. This design is simple and facilitates a secure connection of the welded fixed blade 1 to the base 2. In one embodiment, as... Figure 10 As shown, the positioning post 23a is integrally formed with the base 2, resulting in a simple structure and few parts; in another embodiment, as... Figure 13 As shown, the positioning post 23a is an independent component. Its upper end is inserted into the positioning hole 19 of the fixed knife and welded to the fixed knife 1. Its lower end is bent to the side and pressed onto the base 2 from bottom to top to fix the fixed knife 1 and the base 2 together. This avoids the need for an integrally formed upward protruding positioning post structure on the base 2, which is beneficial for the production and forming of the base 2 during powder metallurgy. At the same time, it is beneficial for the positioning posts at both ends to be aligned and assembled with the positioning hole 19 of the fixed knife, thereby reducing the production accuracy requirements of the fixed knife and the base and reducing the production difficulty.

[0044] The moving blade 4 has concave clearance grooves 42 at its left and right ends respectively. In the left and right direction, the positioning post 23a is set in accordance with the clearance grooves 42, which helps to shorten the length of the fixed blade 1 in the left and right direction while ensuring the cutting range of the side fixed blade tooth 12 and the side moving blade tooth 41 in the left and right direction. In the left and right direction, it helps to reduce the ineffective cutting area outside the side fixed blade tooth 12.

[0045] Preferably, such as Figure 6 In the illustrated embodiment, a support structure is provided below the moving blade 4 to support it. The moving blade is a sheet-like structure. The support structure includes a support bar 28 arranged in the left-right direction on the base body 20 and ball bearings 8 that can roll on the base body 20. The ball bearings 8 are used to reduce friction when the moving blade 4 moves, while the support bar 28 confines the moving blade 4 to a narrow gap, allowing the moving blade to be made thinner and reducing its volume while preventing it from deforming downwards. Of course, it can also be done as follows... Figure 7 In the illustrated embodiment, the support structure includes only support bars 28 arranged along the left-right direction on the base body 20. The support bars 28 confine the moving blade 4 within a narrow gap, allowing the moving blade to be made thinner and reducing its volume while preventing downward deformation; or, as shown... Figure 8 As shown, the support structure consists only of balls 8 that can roll on the base body 20.

[0046] like Figure 9 In the embodiment shown, the support structure includes an elastic element 9 that elastically presses the moving blade 4 upward, preferably a spring sheet.

[0047] Preferably, the bottom of the moving blade 4 is fixed with a moving blade support 62, and a drive connector 61 is fixed on the moving blade support 62. The middle part of the base 2 is provided with a movable groove 27 from left to right for the moving blade support 62 to move left and right. The left and right ends of the movable groove 27 are respectively provided with first welding parts 23. The left and right ends of the movable groove 27 respectively penetrate the base 2 downward to form laser through holes 24. The structure is simple.

[0048] Preferably, the base 2 is formed by powder metallurgy. The bottom of the base 2 is integrally formed with a downwardly extending rotating connecting part 25. The rotating connecting part 25 is provided with a rotating connecting hole 26. The bottom cover 7 is provided below the base 2. The bottom cover 7 covers the first welding part 23 from below. The middle part of the bottom cover 7 is provided with a bottom cover hole 71 for the rotating connecting part 25 to pass through downward. The rotating connecting part 25 is provided with a buckle 251 to fix the bottom cover 7 to the base 2. The structure is simple. The base end 21, the first welding part 23, the laser through hole 24 and / or the movable groove 27 are integrally formed when the base 2 is injection molded.

[0049] Preferably, the fixed blade body 11 is formed by powder metallurgy, and the left and right sides of the side fixed blade teeth 12 are respectively provided with sharp-angled cutting edges 121. The angle α of the cutting edges 121 is ≤70°, which improves the cutting sharpness. The side fixed blade teeth 12 and the fixed blade body 11 are integrally injection molded. The fixed blade 1 is formed by powder metallurgy, which is conducive to the one-time molding of multiple side fixed blade teeth 12 and sharp-angled cutting edges 121, as well as smooth fixed blade ends 17. The structure is simple and easy to manufacture.

[0050] Preferably, the side-fixed cutting tooth 12 is formed by powder metallurgy, and the left and right sides of the side-fixed cutting tooth 12 are respectively provided with downward and outward inclined tooth surfaces. The tooth surface includes an upper inclined surface 122 and a lower inclined surface 123. Relative to the vertical direction f, the inclination angle of the lower inclined surface 123 is greater than the inclination angle of the upper inclined surface 122. The lower inclined surface 123 and the bottom surface of the side-fixed cutting tooth 12 form an acute-angled cutting edge 121. When forming a cutting edge 121 with an included angle a≤70°, the width of the side-fixed cutting tooth 12 is avoided from being too large.

[0051] Preferably, the side-fixing blade 12 is formed by powder metallurgy, with a large root width that gradually decreases towards the end, and a large root thickness that gradually decreases towards the end. The head of the side-fixing blade 12 is formed into a thickening head 124 by laser sintering. The thickening head 124 is larger than the tooth body of the side-fixing blade 12 near the thickening head 124, which is beneficial for making the side-fixing blade 12 smaller while ensuring structural strength, improving its efficiency in combing and cutting long hairs and shortening the length of the hair root after cutting. The thickening head 124 also improves the skin feel at the tip of the side-fixing blade 12.

[0052] Preferably, the fixed blade 1 has a central mounting hole 13 located inside the side fixed blade teeth 12 and the fixed blade end 17. An intermediate blade mesh 3 protrudes upward from the central mounting hole 13 between the base 2 and the fixed blade 1. The moving blade assembly includes an intermediate blade 51 disposed below the intermediate blade mesh 3 and cooperating with it to cut hair. The intermediate blade mesh 3 can be a perforated metal sheet with a material thickness between 0.05mm and 0.1mm, thereby increasing the shaving effect.

Claims

1. A shaver head, characterized in that: The device includes a rigid fixed blade (1) and a base (2). The fixed blade (1) is fixed above the base (2). A movable blade assembly capable of reciprocating left and right is provided below the fixed blade (1). The fixed blade (1) includes a fixed blade body (11). Multiple side fixed blade teeth (12) are provided on the front and / or rear sides of the fixed blade body (11). The multiple side fixed blade teeth (12) on each side are arranged in the left and right direction. Fixed blade ends (17) located outside the multiple side fixed blade teeth (12) are respectively provided on the left and right ends of the fixed blade body (11). The base (2) encloses... The base ends (21) are located at the left and right ends, and the side fixed cutter teeth (12) are corresponding to each side. A recessed clearance groove (22) is provided between the left and right base ends (21) from the front and / or rear side of the base (2). The recessed clearance groove (22) allows the side fixed cutter teeth (12) to be exposed from below the base (2) and suspended outside the base (2). The outer side of the base ends (21) is aligned or substantially aligned with the outer side of the fixed cutter ends (17). The fixed cutter ends (17) have a smooth outer side, and the outer side of the fixed cutter ends (17) smoothly transitions to the top surface.

2. The shaver head according to claim 1, characterized in that: The outer surface of the fixed blade end (17) forms a U-shaped or C-shaped structure from front to back, and the corresponding outer surface of the base end (21) is a U-shaped or C-shaped structure. The lowest end of the fixed blade body (11) has a bottom plane (16). The bottom surface of the side fixed blade teeth (12) and the fixed blade end (17) are coplanar with the bottom plane (16). The top surface of the base end (21) is close to or attached to the bottom surface of the fixed blade end (17). The outer edge (211) of the top surface of the base end (21) is aligned or substantially aligned with the outer edge (171) of the bottom surface of the fixed blade end (17).

3. A shaver head according to claim 1 or 2, characterized in that: The moving blade assembly includes a moving blade (4), which has side moving blade teeth (41) on its front and / or rear sides for cooperating with side fixed blade teeth (12) to cut hair. The base (2) includes a base body (20), and the base end (21) protrudes upward above the base body (20) to form a space between the base body (20) and the fixed blade (1) to accommodate the moving blade (4) and allow the moving blade (4) to move left and right. The base (2) has a first welding part (23) on the inner side of the base end (21), and the bottom of the fixed blade (1) has a second welding part (18) that can be laser welded to the first welding part (23). The second welding part (18) is located on the inner side of the outer side of the fixed blade end (17). The base (2) has a laser through hole (24) for the first welding part (23) to protrude from the bottom of the base (2) so that the laser can enter and weld the first welding part (23) to the second welding part (18).

4. A shaver head according to claim 3, characterized in that: The bottom of the fixed blade (1) has a fixed blade positioning hole (19) that is concave upward on the inner side of the left and right ends respectively, and the top of the base (2) has a positioning post (23a) that is inserted upward into the fixed blade positioning hole (19).

5. A shaver head according to claim 4, characterized in that: The side wall of the positioning post (23a) serves as the first welding part (23), and the outer side of the fixed knife positioning hole (19) serves as the second welding part (18). The positioning post (23a) is integrally formed with the base (2), or the positioning post (23a) is an independent component, with its upper end inserted into the fixed knife positioning hole (19) and welded and fixed to the fixed knife (1), and its lower end pressed onto the base (2) from bottom to top.

6. A shaver head according to claim 5, characterized in that: The moving blade (4) has concave relief grooves (42) at its left and right ends respectively. In the left and right direction, the positioning post (23a) is set in accordance with the relief grooves (42).

7. A shaver head according to claim 3, characterized in that: The moving blade (4) is provided with a support structure below it for supporting the moving blade (4). The moving blade (4) is a sheet-like structure. The support structure includes a support bar (28) arranged on the base body (20) in the left-right direction, and / or a ball bearing (8) that can roll on the base body (20).

8. A shaver head according to claim 3, characterized in that: The bottom of the moving blade (4) is fixed with a moving blade support (62), and a drive connector (61) is fixed on the moving blade support (62). The middle part of the base (2) is provided with a movable groove (27) from left to right for the moving blade support (62) to move left and right. The left and right ends of the movable groove (27) on the base (2) are respectively provided with a first welding part (23). The left and right ends of the movable groove (27) respectively penetrate the base (2) downward to form a laser through hole (24).

9. A shaver head according to any one of claims 1-2 and 4-8, characterized in that: The base (2) is formed by powder metallurgy. The bottom of the base (2) is integrally formed with a downwardly extending rotating connection part (25). The rotating connection part (25) is provided with a rotating connection hole (26). The bottom cover (7) is provided below the base (2). The bottom cover (7) covers the first welding part (23) from below. The middle part of the bottom cover (7) is provided with a bottom cover hole (71) for the rotating connection part (25) to pass through downward. The rotating connection part (25) is provided with a buckle (251) to fix the bottom cover (7) on the base (2).

10. A shaver head according to any one of claims 1-2 and 4-8, characterized in that: The fixed blade body (11) is formed by powder metallurgy. The left and right sides of the side fixed blade teeth (12) have sharp-angled blades (121), the angle of the blades (121) is ≤70°, and the side fixed blade teeth (12) and the fixed blade body (11) are integrally injection molded.

11. A shaver head according to claim 10, characterized in that: The left and right sides of the side-fixed cutting tooth (12) are respectively provided with downward and outward inclined tooth surfaces. The tooth surface includes an upper inclined surface (122) and a lower inclined surface (123). Relative to the vertical direction f, the inclination angle of the lower inclined surface (123) is greater than the inclination angle of the upper inclined surface (122). The lower inclined surface (123) and the bottom surface of the side-fixed cutting tooth (12) form an acute-angled cutting edge (121).

12. A shaver head according to claim 10, characterized in that: The side-fixed cutter tooth (12) has a large root width that gradually decreases towards the end, and a large root thickness that gradually decreases towards the end. The head of the side-fixed cutter tooth (12) is formed into a thickening head (124) by laser sintering. The thickening head (124) is larger than the tooth body of the side-fixed cutter tooth (12) near the thickening head (124).

13. A shaver head according to any one of claims 1-2, 4-8, and 11-12, characterized in that: The fixed blade (1) has a central mounting hole (13) located inside the side fixed blade teeth (12) and the fixed blade end (17) in the middle. An intermediate blade mesh (3) protrudes upward from the central mounting hole (13) between the base (2) and the fixed blade (1). The moving blade assembly includes an intermediate blade (51) that is disposed below the intermediate blade mesh (3) and cooperates with the intermediate blade mesh (3) to cut hair.

Images