Cutting unit and electric shaver

Abstract

The present disclosure relates to a cutting unit and an electric shaver, the cutting unit comprising a support frame, a cutter net, a rotary moving cutter and a reinforcing member. The cutter net is mounted on the support frame; the cutter net comprises a first annular portion and a second annular portion coaxially arranged inside the first annular portion; the first annular portion has a plurality of first hair inlet slots arranged at intervals in the circumferential direction thereof, and the second annular portion has a plurality of second hair inlet slots arranged at intervals in the circumferential direction thereof; the rotary moving cutter has a rotation axis and is configured to be able to rotate about the rotation axis relative to the cutter net; the reinforcing member is configured to cover at least a portion of the cutter net and is arranged inside the second annular portion; wherein the highest point on the top surface of the first annular portion and the highest point on the top surface of the reinforcing member are connected to form a reference shaving line, the reference shaving line rotates around the central axis of the cutter net to form a reference shaving surface; at least a portion of the second annular portion protrudes axially from the reference shaving surface.

Description

Technical Field

[0001] This disclosure relates to the field of shaver technology, and more specifically to a cutting unit and an electric shaver. Background Technology

[0002] Electric shavers have become a common personal care tool for the general public due to their convenience and high shaving efficiency. Their core working components typically include a foil and internal moving blades. After the hairs enter the foil through the feed groove, they are cut by the high-speed moving blades to achieve a shave.

[0003] However, the existing electric shaver blade structure design mostly adopts a flat or curved flush layout. When shaving, the blade surface forms an overall support for the skin, making it difficult for the blade to cut into the micro-depressions on the skin surface. As a result, the hairs in the depressions cannot be effectively captured and cut, leading to the problem of incomplete shaving and a poor user experience. Utility Model Content

[0004] This disclosure provides a cutting unit and an electric shaver to address the problems existing in the prior art.

[0005] According to a first aspect of this disclosure, a cutting unit is provided, comprising: Support frame; A blade net is mounted on the support frame; the blade net includes a first annular portion and a second annular portion coaxially disposed inside the first annular portion; the first annular portion has a plurality of first feed grooves arranged at intervals along its circumference, and the second annular portion has a plurality of second feed grooves arranged at intervals along its circumference. A rotating blade having a rotation axis and configured to rotate relative to the blade mesh about the rotation axis; A reinforcing member, the reinforcing member being configured to cover at least a portion of the blade mesh and disposed inside the second annular portion; Wherein, the highest point on the top surface of the first annular portion is connected to the highest point on the top surface of the reinforcing member to form a reference shaving line, and the reference shaving line is rotated around the central axis of the blade net to form a reference shaving surface; at least a portion of the second annular portion protrudes axially from the reference shaving surface.

[0006] In one embodiment of this disclosure, the second annular portion protrudes from the reference shaving surface by no more than 0.5 mm.

[0007] In one embodiment of this disclosure, the second annular portion protrudes from the reference shaving surface by a height of 0.1-0.2 mm.

[0008] In one embodiment of this disclosure, the highest point on the top surface of the first annular portion and the highest point on the top surface of the reinforcing member are at the same height, and the reference shaving surface is configured as a plane perpendicular to the central axis; Alternatively, the highest point on the top surface of the first annular portion and the highest point on the top surface of the reinforcing member are at different heights, and the reference shaving surface is constructed as a conical surface.

[0009] In one embodiment of this disclosure, the top surface of the second annular portion is configured to be parallel to the reference shaving surface.

[0010] In one embodiment of this disclosure, the reinforcing member is configured as a circular member coaxially disposed inside the second annular portion, and the highest point on its top surface is the center of the circular member; and / or, The top surface of the first annular portion is constructed as an upwardly arched annular arc surface, and the highest point on its top surface is the midpoint of the annular arc surface's width.

[0011] In one embodiment of this disclosure, the reinforcing member is located at the center of the blade mesh and is coaxially arranged with the first annular portion and the second annular portion.

[0012] In one embodiment of this disclosure, the second annular portion is configured to be integrally formed with the first annular portion.

[0013] In one embodiment of this disclosure, the inner and outer sides of the first annular portion each have a circumferential side surface, and at least a portion of the first inlet groove is configured to extend on at least one of said circumferential side surfaces; and / or, The inner and outer sides of the second annular portion each have a circumferential side surface, and at least a portion of the second inlet groove is configured to extend on at least one of the circumferential side surfaces.

[0014] In one embodiment of this disclosure, the blade mesh is integrally formed with the support frame, or the blade mesh is integrally formed with the reinforcing member, or the blade mesh, the support frame, and the reinforcing member are integrally formed.

[0015] In one embodiment of this disclosure, the rotary blade includes a first blade and a second blade, wherein the first blade is located below the first annular portion and the second blade is located below the second annular portion.

[0016] According to a second aspect of this disclosure, an electric shaver is also provided, including a handle, a blade base disposed on the handle, and a cutting unit according to a first aspect of this disclosure, the cutting unit being disposed on the blade base.

[0017] One beneficial effect of this disclosure is that a reference shaving surface is formed by rotating the highest point of the top surface of the first annular portion and the highest point of the top surface of the reinforcing member, and at least a portion of the second annular portion protrudes axially from the reference shaving surface. During shaving, the reference shaving surface can provide stable support for the skin and prevent excessive skin depression. The second annular portion protruding from the reference shaving surface can accurately cut into the micro-depressions on the skin surface, capture and cut the beard hairs in the depressions that are difficult to reach by existing flush-type blades, effectively solving the problem of incomplete shaving by traditional electric shavers.

[0018] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0020] Figure 1 This is a schematic diagram of the structure of an electric shaver provided in an embodiment of the present disclosure; Figure 2 This is a schematic diagram of a cutting unit structure provided in an embodiment of this disclosure; Figure 3 This is an exploded view of a cutting unit provided in an embodiment of this disclosure; Figure 4 This is a schematic diagram of a rotating blade structure provided in an embodiment of the present disclosure; Figure 5 This is a cross-sectional view of a cutting unit provided in an embodiment of this disclosure; Figure 6 This is a schematic diagram of a blade mesh structure provided in an embodiment of this disclosure; Figure 7 yes Figure 6 A partially enlarged schematic diagram of the position of the middle circumferential side surface; Figure 8 This is a top view of a blade mesh provided in an embodiment of this disclosure; Figure 9 This is a cross-sectional view of a blade mesh provided in an embodiment of this disclosure.

[0021] Figures 1 to 9 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows: 100. Cutting unit; 1. Support frame; 2. Cutting head; 21. First annular part; 211. First feed groove; 22. Second annular part; 221. Second feed groove; 23. Circumferential side surface; 3. Rotating cutter; 30. Rotating shaft; 31. First cutting tool; 32. Second cutting tool; 4. Reinforcing member; 5. Fixing frame; 6. Cover; 200. Handle; 300. Cutting head base. Detailed Implementation

[0022] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0023] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0024] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0026] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0027] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0028] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0029] This disclosure provides a cutting unit and an electric shaver, wherein the cutting unit is part of the electric shaver, and the cutting unit will be described in conjunction with the description of the specific structure and working principle of the electric shaver below.

[0030] refer to Figure 1 The electric shaver includes: a cutting unit 100, a handle 200, and a blade base 300. The blade base 300 is disposed on the handle 200, and the cutting unit 100 is disposed on the blade base 300. The cutting unit 100 includes at least: a support frame 1, a blade net 2, a rotating blade 3, and a reinforcing member 4.

[0031] The handle 200 can be configured to be comfortable to hold, allowing the user to shave by holding the handle 200 and bringing the cutting unit 100 into contact with the skin. Specifically, the handle 200 may house core electrical components such as a drive motor, battery, and PCB control board, while the surface of the handle may also have operating components such as a power switch and speed adjustment buttons for convenient user control of the shaver's start / stop and speed.

[0032] The blade base 300 is mounted on the top of the handle 200 and has a transmission mechanism inside, which can transmit the power of the drive motor in the handle 200 to the rotating blade 3 of the cutting unit 100. In addition, the blade base 300 also has a positioning structure for supporting and mounting the top cutting unit 100. In one embodiment of this disclosure, a floating mechanism may also be provided in the handle 200 or the blade base 300. When the cutting unit 100 is subjected to external force, such as when pressed against the user's skin, the cutting unit 100 can transmit the pressure to the floating mechanism through the blade base 300, thus allowing the cutting unit 100 to float flexibly, thereby closely conforming to the skin contours of different users and improving the shaving effect.

[0033] The cutting unit 100 is mounted on the cutter head base 300. Specifically, the cutting unit 100 can be detachably mounted on the cutter head base 300, thereby facilitating the user to disassemble and clean the cutting unit 100 after use, and to replace it after the cutter head 2 and / or the rotating cutting tool 3 wear. (Reference) Figure 2 and Figure 3 In one embodiment of this disclosure, the cutting unit 100 further includes a cover 6 disposed at the bottom of the cutting unit 100 for mounting and connecting with the cutter head base 300. Furthermore, a snap-fit ​​mechanism is preferably provided on the cover 6, thereby allowing the cutting unit 100 to be detachably mounted on the cutter head base 300.

[0034] The support frame 1 can be installed on the cover 6. As the supporting foundation of the entire cutting unit 100, the support frame 1 is typically made of high-strength hard plastic or stainless steel alloy. Its structural form is adapted to the installation requirements of the foil 2 and the rotating blade 3, and is generally designed as a ring frame structure. Furthermore, the support frame 1 can be equipped with positioning buckles corresponding to the foil 2, thereby providing a stable installation reference for the foil 2 and bearing the pressure generated during shaving, preventing displacement of the overall structure.

[0035] refer to Figure 1The electric shaver provided in this embodiment is a three-head shaver. The three-blade design allows for faster and more thorough shaving, and is especially suitable for handling coarse or thick beards. Correspondingly, the support frame 1 and the cover 6 in this embodiment have an approximate clover-shaped configuration, and the cover 6 has three mounting ports for assembling the support frame 1, which can be pivotally mounted on the cover 6; the support frame 1 also has three mounting ports for assembling the foil 2 and the rotating blade 3.

[0036] The blade net 2 is mounted on the support frame 1 and adopts a double-layer coaxial ring structure design. Specifically, refer to... Figure 6 and Figure 9 The blade mesh 2 includes a first annular portion 21 and a second annular portion 22 coaxially disposed inside the first annular portion 21. For example... Figure 9 As shown, the blade mesh 2 has a central axis A, and the first annular portion 21 and the second annular portion 22 are both arranged around the central axis A. By arranging the two annular portions coaxially, the fitting accuracy between the blade mesh 2 and the rotating blade 3 is ensured.

[0037] To ensure the beard can smoothly enter the cutting area, such as Figure 6 As shown, the first annular portion 21 has a plurality of first styling grooves 211 arranged at intervals along its circumference, and the second annular portion 22 has a plurality of second styling grooves 221 arranged at intervals along its circumference. Specifically, the plurality of first styling grooves 211 can be evenly arranged on the first annular portion 21, and the plurality of second styling grooves 221 can be evenly arranged on the second annular portion 22. The first styling grooves 211 and the second styling grooves 221 can be formed by precision stamping or by powder metallurgy injection molding. The depth of the grooves is adapted to the thickness of the first annular portion 21 and the second annular portion 22, and the edges of the grooves are passivated to avoid scratching the skin.

[0038] refer to Figure 5 The rotating blade 3 is covered by the blade net 2. The rotating blade 3 has a rotation axis and is configured to rotate about the rotation axis. Specifically, the rotating blade 3 has a pivot 30, which is used to drive a power output shaft, thereby obtaining a driving force for high-speed rotation about the rotation axis. The rotation axis overlaps with the central axis A of the blade net 2, thereby ensuring that the cutting edge of the rotating blade 3 can uniformly correspond to the first beard groove 211 and the second beard groove 221 opened on the blade net 2. During shaving, the beard extends into the area below the blade net 2 through the first beard groove 211 and the second beard groove 221 and is cut by the high-speed rotating blade 3. The cutting edge of the rotating blade 3 is a sharp metal blade.

[0039] In one embodiment of this disclosure, such as Figure 4As shown, the rotating blade 3 includes a first blade 31 and a second blade 32. The first blade 31 is located below the first annular portion 21, and the second blade 32 is located below the second annular portion 22. Specifically, the first blade 31 and the second blade 32 are coaxially arranged and rotate synchronously. Multiple first blades 31 can be provided, and these multiple first blades 31 can be evenly distributed in the circumferential direction; multiple second blades 32 can also be provided, and these multiple second blades 32 can be evenly distributed in the circumferential direction. This disclosure achieves zoned cutting by setting the first blade 31 and the second blade 32 on the rotating blade 3, with the two blades respectively corresponding to the first annular portion 21 and the second annular portion 22. This enables precise cutting of beard hairs in different areas, significantly improving cutting efficiency and ensuring a thorough shave.

[0040] In one embodiment of this disclosure, such as Figure 3 As shown, the cutting unit 100 also includes a mounting bracket 5, which can be installed in the cover 6 and is located below the rotating blade 3. The mounting bracket 5 provides mounting and positioning support for the rotating blade 3, and during shaving, the cut beard hairs can fall through the gap in the mounting bracket 5 onto the cover at the upper end of the blade head base 300, preventing beard debris from accumulating between the rotating blade 3 and other components, thereby preventing a decrease in the rotational speed or wear of the rotating blade 3 due to debris jamming. After shaving, the user can remove the cutting unit 100 and directly pour out the beard debris collected on the cover at the upper end of the blade head base 300, thereby reducing the cleaning difficulty of the cutting unit 100 and improving the user experience.

[0041] refer to Figure 6 , Figure 8 and Figure 9 The reinforcing member 4 is configured to cover at least a portion of the foil 2 and is disposed inside the second annular portion 22. The reinforcing member 4 can be made of the same metal material as the foil 2 or a higher-strength engineering plastic, which can enhance the overall strength and compressive strength of the foil 2, particularly the structural strength of the central region of the foil 2. Specifically, the reinforcing member 4 provides effective rigid support to the central region of the foil 2, which can counteract the localized pressure exerted on the foil 2 by the skin during shaving, preventing deformation of the foil 2, thereby ensuring safety and a close fit during shaving, and ensuring stable cutting between the foil 2 and the rotating blade 3, thus maintaining a stable cutting effect and extending the service life of the cutting unit 100.

[0042] refer to Figure 9The highest point on the top surface of the first annular portion 21 is connected to the highest point on the top surface of the reinforcing member 4 to form a reference shaving line B. The reference shaving line B rotates around the central axis A of the foil 2 to form a reference shaving surface. At least a portion of the second annular portion 22 protrudes axially from the reference shaving surface. Specifically, the reference shaving line B is formed by a virtual line connecting the highest points of the first annular portion 21 and the reinforcing member 4. The virtual surface formed by rotating the reference shaving line B 360° around the central axis A is the reference shaving surface. During shaving, the reference shaving surface (corresponding to the highest point positions on the first annular portion 21 and the reinforcing member 4) can provide stable support to the skin and prevent excessive skin depression.

[0043] The second annular portion 22, protruding from the reference shaving surface, can precisely cut into the microscopic depressions of the skin surface, fully capturing the hairs in these depressions and guiding them into the second hair inlet groove 221, whereby the hairs are cut by the high-speed rotating second blade 32. Existing electric shavers typically use flush-mounted foils, which are difficult to capture hairs in the microscopic depressions of the skin. In contrast, this disclosure, by providing the second annular portion 22 protruding from the reference shaving surface, can capture and cut hairs in these depressions, effectively solving the problem of incomplete shaving in traditional electric shavers.

[0044] In one embodiment of this disclosure, the height of the second annular portion 22 protruding from the reference shaving surface does not exceed 0.5 mm. Preferably, the height of the second annular portion protruding from the reference shaving surface is 0.1-0.2 mm. It should be noted that the protrusion height referred to here specifically refers to the shortest vertical distance between any point on the top surface of the second annular portion 22 and the reference shaving surface. The measurement direction of this distance is parallel to or at an angle to the central axis A of the foil 2. By limiting the specific protrusion height of the second annular portion 22, this disclosure ensures that the second annular portion 22 can fully embed into the microscopic depressions of the skin, while avoiding excessive pressure or scratches on the skin due to excessive protrusion, and also avoids the shaving area corresponding to the first annular portion 21 failing to form effective contact with the skin due to excessive protrusion, thus reducing the shaving effect.

[0045] In one embodiment of this disclosure, the highest point on the top surface of the first annular portion 21 and the highest point on the top surface of the reinforcing member 4 are at the same height, and the reference shaving surface is constructed as a plane perpendicular to the central axis. In this embodiment, the reference shaving line B formed by connecting the highest point on the top surface of the first annular portion 21 and the highest point on the top surface of the reinforcing member 4 is a horizontal line segment perpendicular to the central axis A of the foil 2. After this horizontal line segment rotates 360° around the central axis A of the foil 2, the reference shaving surface formed by its trajectory is a plane perpendicular to the central axis. This planar structure adapts to the shaving needs of flat areas of skin and can form a large area of ​​uniform support in flat areas, thereby improving shaving stability.

[0046] In another embodiment of this disclosure, the highest point on the top surface of the first annular portion 21 and the highest point on the top surface of the reinforcing member 4 are at different heights, and the reference shaving surface is constructed as a conical surface. In this embodiment, the reference shaving line B formed by connecting the highest point on the top surface of the first annular portion 21 and the highest point on the top surface of the reinforcing member 4 is a spatial oblique line at a predetermined angle to the central axis A of the foil 2. After rotating 360° around the central axis A, the reference shaving surface formed by the trajectory of this oblique line is the conical surface. This conical surface structure can better conform to areas with large facial contours, such as the chin and below the cheekbones, so that the reference shaving surface can closely conform to the skin curvature of these areas and avoid support gaps. It should be noted that the height difference between the highest point on the top surface of the first annular portion 21 and the highest point on the top surface of the reinforcing member 4 should not be too large, preferably not exceeding 0.1 mm, so as to avoid the area located at the lower position from failing to provide effective support to the skin.

[0047] In one embodiment of this disclosure, the top surface of the second annular portion 22 is configured to be parallel to the reference shaving surface. Specifically, regardless of whether the reference shaving surface is planar or conical, the top surface of the second annular portion 22 is configured to remain parallel to the reference shaving surface. This design ensures that the circumferential protrusion height of the second annular portion 22 is uniform, avoiding situations where the protrusion is too high or too low in some areas. This ensures that the cutting depth of the second annular portion 22 into the microscopic depressions of the skin remains uniform throughout the circumferential range, thereby guaranteeing the consistency of the circumferential cutting effect, avoiding beard residue caused by insufficient local protrusion height, and also avoiding local skin discomfort caused by excessively high local protrusion, further improving the uniformity and comfort of shaving.

[0048] In one embodiment of this disclosure, reference is made to Figure 8 and Figure 9 The reinforcing member 4 is constructed as a circular component coaxially disposed inside the second annular portion 22, with the highest point on its top surface being the center of the circular component. Specifically, the diameter of the circular component is adapted to the inner diameter of the second annular portion 22, and the highest point on the top surface of the circular reinforcing member 4 is its center. This allows the supporting force of the reinforcing member 4 to be concentrated in the central area of ​​the blade mesh 2, while being evenly distributed circumferentially, thereby enhancing the structural rigidity of the middle part of the blade mesh 2 and thus enhancing the structural stability of the blade mesh 2.

[0049] In one embodiment of this disclosure, the top surface of the first annular portion 21 is constructed as an upwardly arched annular arc surface, with the highest point on its top surface being the midpoint of the annular arc surface's width. Specifically, the radius of curvature of the annular arc surface can be designed according to the contour features of the human face, thereby better conforming to the facial contour. The fact that the highest point on the top surface of the first annular portion 21 is the midpoint of the annular arc surface's width allows the top surface of the first annular portion 21 to form a larger contact area with the face, thereby improving the support effect of the reference shaving surface on the skin.

[0050] In one embodiment of this disclosure, such as Figure 8 As shown, the reinforcing member 4 is located at the center of the blade mesh 2 and is coaxially arranged with the first annular portion 21 and the second annular portion 22. As mentioned earlier, the blade mesh 2 has a central axis A, and both the first annular portion 21 and the second annular portion 22 are arranged around this central axis A. In this embodiment, the central axis of the reinforcing member 4 is completely coincident with the central axis A of the blade mesh 2. This design ensures that the supporting force of the reinforcing member 4 on the blade mesh 2 is evenly distributed circumferentially, avoiding uneven force on the blade mesh 2 due to the eccentric arrangement of the reinforcing member 4, which could lead to local deformation.

[0051] In one embodiment of this disclosure, reference is made to Figure 7 The first annular portion 21 has a circumferential side surface 23 on its inner and outer sides, and at least a portion of the first hair inlet groove 211 is configured to extend on at least one circumferential side surface 23; and / or, the second annular portion 22 has a circumferential side surface 23 on its inner and outer sides, and at least a portion of the second hair inlet groove 221 is configured to extend on at least one circumferential side surface 23. The design of the first hair inlet groove 211 and / or the second hair inlet groove 221 extending at least partially along the circumferential side surface 23 overcomes the limitation of only providing hair inlet grooves on the top surface, achieving side-mounted beard capture. The electric shaver provided in this disclosure can effectively capture beards with different growth directions, especially those growing obliquely and close to the skin surface. These types of beards are often difficult to capture by top-mounted hair inlet grooves, but hair inlet grooves extending at least partially to the circumferential side surface 23 can capture such beards, thereby significantly improving the amount and efficiency of hair capture and further reducing shaving residue.

[0052] In one embodiment of this disclosure, the second annular portion 22 is integrally formed with the first annular portion 21. This integral forming process eliminates the assembly gap between the first annular portion 21 and the second annular portion 22, forming a single integrated structure. This improves the overall structural strength of the foil 2, reduces the risk of deformation, and avoids jamming problems caused by beard debris entering the gap during shaving. Furthermore, the integral forming process reduces the number of parts and assembly steps, lowering production costs while improving the manufacturing precision of the foil 2, ensuring the coaxiality of the first annular portion 21 and the second annular portion 22, and guaranteeing the stability of the fit between the foil 2 and the rotating blade 3.

[0053] In one embodiment of this disclosure, the blade mesh 2 is integrally formed with the support frame 1, or the blade mesh 2 is integrally formed with the reinforcing member 4, or the blade mesh 2, support frame 1, and reinforcing member 4 are integrally formed. These three integral forming schemes can be flexibly selected according to actual production needs, material characteristics, and cost control objectives. The integral forming process can eliminate the assembly gaps between the blade mesh 2 and the support frame 1, or between the blade mesh 2 and the reinforcing member 4, or all three, thereby forming an integral structure. This improves the overall structural strength of the cutting unit 100, reduces the risk of blade mesh 2 deformation, and avoids the problem of beard debris getting stuck in the gaps during shaving. Furthermore, the integral forming process can reduce the number of parts and assembly steps, lower production costs, and improve the production accuracy of the cutting unit 100.

[0054] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A cutting unit, characterized in that, include: Support frame; A blade net is mounted on the support frame; the blade net includes a first annular portion and a second annular portion coaxially disposed inside the first annular portion; the first annular portion has a plurality of first feed grooves arranged at intervals along its circumference, and the second annular portion has a plurality of second feed grooves arranged at intervals along its circumference. A rotating blade having a rotation axis and configured to rotate relative to the blade mesh about the rotation axis; A reinforcing member, the reinforcing member being configured to cover at least a portion of the blade mesh and disposed inside the second annular portion; Wherein, the highest point on the top surface of the first annular portion is connected to the highest point on the top surface of the reinforcing member to form a reference shaving line, and the reference shaving line is rotated around the central axis of the blade net to form a reference shaving surface; at least a portion of the second annular portion protrudes axially from the reference shaving surface.

2. The cutting unit according to claim 1, characterized in that, The second annular portion protrudes no more than 0.5 mm above the reference shaving surface.

3. The cutting unit according to claim 2, characterized in that, The second annular portion protrudes 0.1-0.2 mm above the reference shaving surface.

4. The cutting unit according to claim 1, characterized in that, The highest point on the top surface of the first annular portion and the highest point on the top surface of the reinforcing member are at the same height, and the reference shaving surface is constructed as a plane perpendicular to the central axis; Alternatively, the highest point on the top surface of the first annular portion and the highest point on the top surface of the reinforcing member are at different heights, and the reference shaving surface is constructed as a conical surface.

5. The cutting unit according to claim 4, characterized in that, The top surface of the second annular portion is configured to be parallel to the reference shaving surface.

6. The cutting unit according to claim 4, characterized in that, The reinforcing member is constructed as a circular component coaxially disposed inside the second annular portion, with its highest point on its top surface being the center of the circular component; and / or, The top surface of the first annular portion is constructed as an upwardly arched annular arc surface, and the highest point on its top surface is the midpoint of the annular arc surface's width.

7. The cutting unit according to claim 1, characterized in that, The reinforcing member is located at the center of the blade mesh and is coaxially arranged with the first annular portion and the second annular portion.

8. The cutting unit according to claim 1, characterized in that, The second annular portion is constructed to be integrally formed with the first annular portion.

9. The cutting unit according to claim 1, characterized in that, The inner and outer sides of the first annular portion each have a circumferential side surface, and at least a portion of the first inlet groove is configured to extend on at least one of said circumferential side surfaces; and / or, The inner and outer sides of the second annular portion each have a circumferential side surface, and at least a portion of the second inlet groove is configured to extend on at least one of the circumferential side surfaces.

10. The cutting unit according to claim 1, characterized in that, The blade mesh is integrally formed with the support frame, or the blade mesh is integrally formed with the reinforcing member, or the blade mesh, the support frame, and the reinforcing member are integrally formed.

11. The cutting unit according to claim 1, characterized in that, The rotating blade includes a first blade and a second blade, with the first blade located below the first annular portion and the second blade located below the second annular portion.

12. An electric shaver, characterized in that, It includes a handle, a cutter base disposed on the handle, and a cutting unit according to any one of claims 1-11, wherein the cutting unit is disposed on the cutter base.

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