Cylindrical annular surface shaver

The combination of cylindrical design and axial strip blades solves the problems of shaving blind spots, vibration and noise of existing electric shaving blades, providing a compact, quiet and efficient shaving solution.

CN223160977UActive Publication Date: 2025-07-29SHENZHEN SPADE BLACK TECH CO LTD
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Patent Information

Application Number
CN202421653571.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-12
Publication Date
2025-07-29
Estimated Expiration
2034-07-12

AI Technical Summary

Technical Problem

Existing electric shaver has problems such as blind spots in shaving, high vibration, high noise, and the hand blocking of vision when used.

Method used

A cylindrical annular shaver is designed, using a hollow cylindrical cutter mesh assembly and an axially extending strip blade, combining a central positioning member and elastic components for a tight fit and efficient shaving.

Benefits of technology

Achieving a small size, low vibration and noise, covering all shaving areas, providing a comfortable shaving experience and efficient shaving results.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of electric shavers, and relates to a cylindrical annular surface shaver, which is characterized by comprising a main machine, a power supply, a motor, a cylindrical ring surface and a cylindrical ring surface, the knife net assembly is in a hollow column shape, and the knife net assembly is detachably connected with the main machine; the rotating shaft is rotationally mounted in the knife net assembly and is connected with a motor transmission shaft in the main machine; the strip-shaped blade is installed on the side face of the rotating shaft, the strip-shaped blade extends in the axial direction of the rotating shaft, and the cutting edge of the strip-shaped blade is in close contact with the knife net assembly; wherein the cylindrical side face of the knife net assembly is provided with a hole area allowing hair and beard to penetrate through, the motor drives the strip-shaped blade to rotate through the rotating shaft to conduct cutting, and a cavity used for containing hair chippings is formed between the motor and the strip-shaped blade.
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Description

Technical Field

[0001] The utility model belongs to the technical field of electric shavers and relates to a cylindrical toroidal shaver. Background Art

[0002] At present, the mainstream electric shavers on the market are basically of two types: rotary and reciprocating. As Figure 1 shown, in a rotary multi-blade net shaver, the blade net and the high-speed rotating blade are used to shear the whiskers. The shaving efficiency of this kind of shaver in the effective area is relatively high. However, there will be gaps between the circular blade nets, resulting in "shaving blind spots" and it is easy to leave small stray hairs after shaving. Moreover, in the central area of the circular blade net, because it is used to place the rotating structure, the angular velocity is also very small, so it is also a blind spot.

[0003] The second type is the reciprocating electric shaver. As the name implies, the inner moving blade in the reciprocating electric shaver makes a reciprocating motion in the blade net, and the rotation of the motor is converted into a reciprocating motion. Therefore, the cutting frequency will be lower than that of the rotary blade head. The reciprocating motion of the blade in the net will generate greater vibration and noise than the circular motion.

[0004] As Figure 2 shown, when using a rotary or reciprocating electric shaver, the holding angle is relatively large, and the hand will block the face, which is not conducive to the user's precise trimming. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cylindrical toroidal shaver aiming at the deficiencies of the prior art, achieving the effects of small volume and small vibration by changing the structure of the cutter head.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cylindrical toroidal shaver, characterized by comprising:

[0008] A main body, in which a power supply and a motor are provided;

[0009] A blade net assembly, which is a hollow columnar shape and is detachably connected to the main body;

[0010] A rotating shaft, which is rotatably installed in the blade net assembly and is connected to the motor transmission shaft in the main body;

[0011] A strip-shaped blade, which is installed on the side surface of the rotating shaft, the strip-shaped blade extends along the axial direction of the rotating shaft, and the cutting edge of the strip-shaped blade is in close contact with the blade net assembly;

[0012] Among them, a hole area for hair and beard to pass through is provided on the cylindrical side surface of the cutter net assembly, the motor drives the strip blade to rotate through a rotating shaft for cutting, and a cavity for accommodating hair debris is provided between the motor and the strip blade.

[0013] Furthermore, it further includes a central positioning member located at the upper and lower ends of the rotating shaft;

[0014] The rotating shaft is rotatably installed in the cutter net assembly through the central positioning member;

[0015] The transmission shaft of the motor, the rotating shaft, the cutter net assembly and the central positioning member are coaxial.

[0016] Furthermore, the central positioning member is detachably connected to the cutter net assembly and / or fixedly connected to the cutter net assembly and / or integrated with the rotating shaft;

[0017] The central positioning member is in close contact with the inner wall of the cutter net assembly.

[0018] Furthermore, a radial sliding groove is provided on the rotating shaft, and the strip blade is slidably installed in the radial sliding groove;

[0019] The strip blade is provided with a limiting notch, and the limiting notch cooperates with a limiting boss in the radial sliding groove to limit the sliding stroke of the strip blade.

[0020] Furthermore, an elastic member is provided on the rotating shaft, the elastic member abuts against the strip blade, and the elastic member is used to apply an elastic force towards the cutter net assembly to the strip blade so that the strip blade abuts against the cutter net assembly.

[0021] Furthermore, the strip blade is bent so that the cutting edge of the strip blade is inclined along the rotation direction of the strip blade.

[0022] Furthermore, the cutting edge surface of the strip blade is arc-shaped, and the arc surface of the cutting edge surface is consistent with the inner wall radian of the cutter net assembly.

[0023] Furthermore, the number of the strip blades is two or more, and they are equally divided and installed on the rotating shaft.

[0024] Furthermore, the distance from the upper edge of the hole area to the top end of the cutter net assembly is less than 15 mm.

[0025] Furthermore, the hole area is distributed around the cylindrical side surface of the cutter net assembly.

[0026] The technical solution of this utility model achieves a compact design. Both the main unit and the blade net assembly are compact and cylindrical, making the overall size small and convenient for portability and use. The blades extend axially along the rotating shaft. A floating mesh structure, combined with a spring and centrifugal force, ensures that the blades adhere closely to the blade net, reducing vibration and noise. The cylindrical side of the blade net assembly features a 360-degree distribution of holes. The strip blades extend axially, covering the entire shaving area and eliminating blind spots for a better shaving effect. The motor drives the strip blades through the rotating shaft at high speed, ensuring close contact between the blade edges and the blade net assembly for fast and efficient hair cutting. Furthermore, because the blades slide freely within the blade grooves, they exert an outward centrifugal force as the moving blade assembly rotates. The centrifugal force can be adjusted by controlling the blade weight and rotation speed. Combined with the spring tension, this allows for multiple levels of control for varying shaving results. The cylindrical design allows for a narrow grip angle, keeping the hand out of the way of the face, making it easier for users to perform detailed shaving operations.

[0027] Other features and advantages of the utility model will be described in the subsequent description, and in part will become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model can be achieved and obtained through the structures particularly pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be described in detail below with reference to the accompanying drawings to make the above advantages of the present invention more clear.

[0029] Figure 1 Schematic diagram of a prior art razor

[0030] Figure 2 It is a schematic diagram of the use of a prior art razor;

[0031] Figure 3 It is a schematic diagram of a cylindrical toroidal shaver of the present utility model;

[0032] Figure 4 This is a cross-sectional view of a cylindrical toroidal shaver of the present utility model;

[0033] Figure 5 This is a schematic diagram of a case of a center positioning member a of a cylindrical toroidal shaver of the present invention;

[0034] Figure 6 This is a schematic diagram of a case of a center positioning member b of a cylindrical toroidal shaver of the present invention;

[0035] Figure 7 This is a schematic diagram of a case of a center positioning member c of a cylindrical toroidal shaver of the present invention;

[0036] Figure 8Schematic diagram of the installation of the strip blade of a cylindrical toroidal shaver of the present utility model;

[0037] Figure 9 Schematic diagram of the force on the strip blade of a cylindrical toroidal shaver of the present utility model;

[0038] Figure 10 Schematic diagram of the centrifugal force of the strip blade of a cylindrical toroidal shaver of the present utility model;

[0039] Figure 11 Schematic diagram of the bending of a cylindrical toroidal shaver of the present utility model;

[0040] Figure 12 Schematic diagram of the blade arc of a cylindrical toroidal shaver of the present utility model;

[0041] Figure 13 Schematic diagram of the top of the cutter net assembly of a cylindrical toroidal shaver of the present utility model. Detailed implementation manners

[0042] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0043] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0044] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0045] In the embodiments of the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0046] Refer to the attached Figures 1-4 As shown, a cylindrical toroidal shaver, characterized by comprising:

[0047] A main body 100, in which a power source and a motor 110 are provided;

[0048] A cutter net assembly 200, which is a hollow columnar shape, and the cutter net assembly 200 is detachably connected to the main body 100;

[0049] A rotating shaft 300, which is rotatably installed in the cutter net assembly 200 and is connected to the transmission shaft of the motor 110 in the main body 100;

[0050] A strip-shaped blade 400, which is installed on the side surface of the rotating shaft 300, the strip-shaped blade 400 extends along the axial direction of the rotating shaft 300, and the cutting edge of the strip-shaped blade 400 is in close contact with the cutter net assembly 200;

[0051] Among them, a hole area for hair and beard to pass through is provided on the cylindrical side surface of the cutter net assembly 200, the motor 110 drives the strip-shaped blade 400 to rotate through the rotating shaft 300 for cutting, and a cavity 120 for accommodating hair debris is provided between the motor 110 and the strip-shaped blade 400.

[0052] The design concept of this cylindrical toroidal shaver is to optimize the deficiencies of traditional shavers, especially to solve the problems of shaving blind spots, large vibration, high noise, and blocking the line of sight of the hand during use. By introducing the design of a cylindrical cutter net assembly 200 and an axially extending strip-shaped blade 400, the shaver has the characteristics of small volume, high shaving efficiency, low vibration and low noise, improving the shaving experience of users.

[0053] The main body 100 is built-in with a power supply and a motor 110 to provide a power source. The cutter net assembly 200 is in a hollow column shape and is detachably connected to the main body 100. The cylindrical side surface of the cutter net assembly 200 is provided with a hole area for hair and beard to pass through. When the motor 110 is started, it drives the rotating shaft 300 to rotate. The strip-shaped blade 400 rotates with the rotating shaft 300 and is in close contact with the hole area of the cutter net assembly 200. The hair and beard pass through the hole area of the cutter net assembly 200 and are cut by the strip-shaped blade 400. The cut hair debris is accommodated in the cavity 120 between the motor 110 and the strip-shaped blade 400.

[0054] The cylindrical design makes the shaver compact in volume, convenient for users to carry and store. The strip-shaped blade 400 extends axially. Through optimized design, the vibration and noise are reduced, providing a more comfortable shaving experience. The cylindrical side surface of the cutter net assembly 200 is provided with a hole area at 360 degrees, and the strip-shaped blade 400 covers all shaving areas without shaving blind spots. The motor 110 drives the strip-shaped blade 400 to rotate at a high speed through the rotating shaft 300, with high hair cutting efficiency and good shaving effect. The cylindrical structure design enables a smaller holding angle, and the hand will not block the face, facilitating users to perform precise trimming. The blade and the cutter net assembly 200 are designed for easy disassembly, and the hair debris accommodating cavity 120 is reasonably designed, facilitating users to clean and maintain. The central positioning member 500 is adopted to ensure that the rotating shaft 300, the transmission shaft of the motor 110, and the cutter net assembly 200 are coaxial, maintaining a high dynamic balance, reducing component wear, and extending the service life.

[0055] In this embodiment, it further includes a central positioning member 500, and the central positioning member 500 is located at the upper and lower ends of the rotating shaft 300;

[0056] The rotating shaft 300 is rotatably installed in the cutter net assembly 200 through the central positioning member 500;

[0057] The transmission shaft of the motor 110, the rotating shaft 300, the cutter net assembly 200, and the central positioning member 500 are coaxial.

[0058] The addition of the central positioning member 500 aims to further improve the structural stability and user experience of the shaver. The central positioning member 500 is located at the upper and lower ends of the rotating shaft 300. By firmly installing the rotating shaft 300 in the cutter net assembly 200, it ensures that the transmission shaft of the motor 110, the rotating shaft 300, the cutter net assembly 200, and the central positioning member 500 are on the same axis. This design idea is mainly to improve the coaxiality of the shaver, reduce vibration and noise during operation, and extend the service life.

[0059] The motor 110 drives the rotating shaft 300 to rotate through a transmission shaft. The central positioning member 500 ensures that the rotating shaft 300 rotates stably within the cutter net assembly 200, realizing the rotary shaving action of the shaving blades. The connection between the central positioning member 500 and the rotating shaft 300 ensures that the transmission shaft of the motor 110, the rotating shaft 300, and the cutter net assembly 200 are concentric during operation, which helps to reduce deviations and vibrations during operation. When the razor is working, the central positioning member 500 helps to maintain the dynamic balance of the moving cutter assembly, ensuring the stability of the razor even during high-speed rotation.

[0060] The coaxial design makes the razor more stable during operation, improving shaving efficiency and shaving uniformity. Precise central positioning reduces vibrations and noise during shaving, providing a more comfortable shaving experience. Reducing additional wear caused by eccentricity helps to extend the service life of the razor.

[0061] Reference appendix Figures 5-7 As shown, in this embodiment, the central positioning member 500 is detachably connected to and / or fixedly connected to the cutter net assembly 200 and / or integrated with the rotating shaft 300; the central positioning member 500 is in close contact with the inner wall of the cutter net assembly 200.

[0062] The design of the central positioning member 500 allows it to be either detachably connected or fixedly connected to the cutter net assembly 200, or integrated with the rotating shaft 300, providing multiple installation options to meet different usage and maintenance requirements.

[0063] a. Late installation: As an independent part, it can be installed at the final stage of razor assembly, facilitating replacement and maintenance.

[0064] b. Integrated in the moving cutter group: Integrating with the moving cutter assembly part can reduce assembly steps and improve production efficiency.

[0065] c. Integrated with the stationary cutter net: Manufactured as part of the stationary cutter net, simplifying the design and manufacturing process.

[0066] The central positioning member 500 is in close contact with the inner wall of the cutter net assembly 200, ensuring precise alignment and concentricity between the rotating shaft 300 and the cutter net assembly 200, which is crucial for the stability and shaving effect of the razor. The multiple implementation methods of the central positioning structure, late installation, integration on the moving cutter group, and integration with the stationary cutter net, provide design flexibility and can be selected according to the specific requirements of the razor and production costs. The central positioning member 500 not only plays a positioning role but also provides necessary support to the cutter net assembly 200 to ensure its stability during the operation of the razor. Strictly control the circular runout tolerance of the cylindrical stationary cutter net to ensure the concentricity between the razor components and the overall dynamic balance.

[0067] Reference appendix Figures 8-10 As shown, in this embodiment, a radial chute 310 is provided on the rotating shaft 300, and the strip-shaped blade 400 is slidably mounted in the radial chute 310;

[0068] The strip-shaped blade 400 is provided with a limiting notch, and the limiting notch cooperates with a limiting boss in the radial chute to limit the sliding stroke of the strip-shaped blade.

[0069] The design of the radial chute 310 allows the strip-shaped blade 400 to perform radial sliding within a certain range on the rotating shaft 300, so as to achieve an adaptive fit between the blade and the facial contour. The limiting notch 410 cooperates with the limiting boss 320 in the radial chute to ensure the stability of the blade during rotation, while allowing necessary fine-tuning to adapt to the facial curves of different users. The slidably mounted strip-shaped blade 400 is to provide a slight movement space for the blade during shaving, enabling the blade edge to adapt to the cutter net and always closely adhere to the cutter net, even if there is a slight deformation between the cutter net and the skin due to extrusion during shaving. This prevents excessive gaps between the blade and the cutter net from clamping hair, or being too tight and reducing the rotation speed, thus affecting the shaving efficiency.

[0070] In this embodiment, an elastic member 600 is provided on the rotating shaft 300. The elastic member 600 abuts against the strip-shaped blade 400, and the elastic member 600 is used to apply an elastic force towards the cutter net assembly 200 to the strip-shaped blade 400, so that the strip-shaped blade 400 abuts against the cutter net assembly 200.

[0071] The design of the elastic member 600 enables the strip-shaped blade 400 to dynamically fit the cutter net assembly 200, ensuring that the razor can maintain close contact under different pressures and improving the shaving efficiency. The spring or elastic piece on the blade provides an outward force, which, combined with the elastic member 600 on the rotating shaft 300, allows the blade to perform adaptive adjustment according to the facial contour during shaving. Since the blade itself can freely slide in the cutter groove, when the moving cutter group rotates, the blade also has an outward centrifugal force. By controlling the weight and rotation speed of the blade, the magnitude of the centrifugal force can be adjusted, which, combined with the tension of the spring, realizes multi-gear control of different shaving effects.

[0072] The design of the elastic member 600 and the spring ensures the close fit between the blade and the face, improving the thoroughness and uniformity of shaving. The adaptive adjustment ability enables the razor to adapt to the facial contours of different users.

[0073] Reference appendix Figure 11As shown, in this embodiment, the strip blade 400 is bent so that the cutting edge of the strip blade 400 is inclined along the rotation direction of the strip blade 400. By bending the strip blade 400 vertically, even if the blade is very thin, it can maintain sufficient structural strength to prevent deformation during high-speed rotation. The bending design makes the cutting edge of the blade inclined along the rotation direction, forming an acute angle less than 89 degrees, which helps the blade cut hair more effectively. The acute angle design increases the sharpness of the blade edge, making shaving cleaner and neater.

[0074] The bending of the strip blade 400 causes the cutting edge to be inclined along the rotation direction. In this way, when the razor contacts the face, the cutting edge contacts the hair at a smaller angle, improving the shaving efficiency. The acute angle formed at the contact with the stationary blade net helps to concentrate the cutting force of the blade and achieve faster hair cutting. When the bent blade rotates at high speed, due to the structural stability, the deformation caused by centrifugal force is reduced.

[0075] The bending treatment enhances the structural strength of the blade, making the blade more wear-resistant during long-term use. Due to the improvement of the structural strength of the blade, the maintenance requirements caused by deformation are reduced, and the replacement cycle of the blade is extended. The design of the acute angle and the inclined cutting edge provides a smoother shaving experience and reduces the pulling feeling during shaving.

[0076] Refer to the appendix Figure 12 As shown, in this embodiment, the cutting edge surface of the strip blade 400 is arc-shaped, and the arc surface of the cutting edge surface is consistent with the inner wall radian of the blade net assembly 200. The arc-shaped design of the cutting edge surface makes its contact with the inner wall of the blade net assembly 200 smoother during rotation, reducing friction and vibration during shaving. By reducing the friction between the blade and the blade net assembly 200, the arc-shaped design helps to reduce the noise generated during shaving and provides a quieter shaving experience. The consistency between the arc-shaped cutting edge surface and the inner wall of the blade net assembly 200 helps to reduce the wear of the blade during shaving and even achieves the effect of becoming sharper with more grinding.

[0077] The arc-shaped design of the cutting edge surface ensures that the contact between the blade and the inner wall of the blade net assembly 200 during rotation is continuous and smooth, thereby reducing the friction force. During shaving, the rotation of the blade and the design of the arc-shaped cutting edge surface form a self-grinding effect, which helps to maintain the sharpness of the blade.

[0078] The arc-shaped cutting edge surface reduces friction and vibration during shaving, providing a softer shaving experience. Reducing friction means lower noise generated during shaving, enhancing the user experience. The arc-shaped cutting edge surface reduces the wear of the blade, extends the service life of the blade, and reduces the replacement frequency.

[0079] In this embodiment, the number of the strip blades 400 is two or more, and they are equally spaced and installed on the rotating shaft 300. The equal-spacing installation of the blades helps to maintain the dynamic balance of the rotating shaft 300 and reduce the vibration caused by uneven mass distribution. All the strip blades 400 are fixed on the rotating shaft 300 and work synchronously with the rotation of the rotating shaft 300 to achieve the shaving action. Multiple blades working simultaneously can quickly complete the shaving task and save time. The balanced blade distribution reduces the noise and vibration generated during shaving and provides a more comfortable shaving experience.

[0080] Refer to the attached Figure 13 As shown, in this embodiment, the distance from the upper edge of the hole area to the top end of the cutter net assembly 200 is less than 15 mm. By reducing the distance between the hole area and the top of the cutter net, the dead zone above the user when using the razor is reduced, enabling the razor to be closer to the facial contour. A smaller dead zone means that the user needs to adjust the angle of the razor less frequently during shaving, thus improving the overall shaving efficiency. The design of the hole area closer to the edge of the end face can provide a more comfortable and precise shaving experience, especially in areas that are difficult to reach during shaving. The smaller dead zone reduces the holding adjustment of the razor required by the user during shaving, making the shaving process smoother. When using the razor, the user can more easily control the razor to achieve precise shaving.

[0081] In this embodiment, the hole area is distributed around the cylindrical side surface of the cutter net assembly 200. The 360-degree hole distribution provides a uniform shaving effect, and a consistent shaving experience can be achieved regardless of how the user holds the razor. The strip blades extend axially to cover all shaving areas without shaving blind spots, resulting in a better shaving effect. The user can enjoy a more comfortable and satisfactory shaving experience, improving the overall satisfaction with the razor product.

[0082] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cylindrical toroidal shaver, characterized in that, Comprising: A main body (100) with a power supply and a motor (110) provided therein; A cutter net assembly (200), which is a hollow columnar shape and is detachably connected to the main body (100); A rotating shaft (300) rotatably installed in the cutter net assembly (200) and connected to the transmission shaft of the motor (110) in the main body (100); Strip-shaped blades (400) installed on the side surface of the rotating shaft (300), the strip-shaped blades (400) extending along the axial direction of the rotating shaft (300), and the cutting edges of the strip-shaped blades (400) being in close contact with the cutter net assembly (200); Wherein, a hole area for hair and beard to pass through is provided on the cylindrical side surface of the cutter net assembly (200), the motor (110) drives the strip-shaped blades (400) to rotate through the rotating shaft (300) for cutting, and a cavity (120) for accommodating hair debris is provided between the motor (110) and the strip-shaped blades (400).

2. The cylindrical toroidal shaver according to claim 1, wherein, It further includes a central positioning member (500) located at the upper and lower ends of the rotating shaft (300); The rotating shaft (300) is rotatably installed in the cutter net assembly (200) through the central positioning member (500); The transmission shaft of the motor (110), the rotating shaft (300), the cutter net assembly (200) and the central positioning member (500) are coaxial.

3. The cylindrical toroidal shaver according to claim 2, characterized in that, The central positioning member (500) is detachably connected to and / or fixedly connected to the cutter net assembly (200) and / or is integrated with the rotating shaft (300); The central positioning member (500) is in close contact with the inner wall of the cutter net assembly (200).

4. The cylindrical toroidal shaver according to claim 1, wherein Radial sliding grooves (310) are provided on the rotating shaft (300), and the strip-shaped blades (400) are slidably installed in the radial sliding grooves (310); The strip-shaped blades (400) are provided with limiting notches, and the limiting notches cooperate with the limiting protrusions in the radial sliding grooves to limit the sliding stroke of the strip-shaped blades.

5. The cylindrical toroidal shaver according to claim 4, wherein An elastic member (600) is provided on the rotating shaft (300), the elastic member (600) abuts against the strip-shaped blades (400), and the elastic member (600) is used to apply an elastic force towards the cutter net assembly (200) to the strip-shaped blades (400) so that the strip-shaped blades (400) abut against the cutter net assembly (200).

6. The cylindrical toroidal shaver according to claim 1, wherein, The strip-shaped blades (400) are bent so that the cutting edges of the strip-shaped blades (400) are inclined along the rotation direction of the strip-shaped blades (400).

7. The cylindrical toroidal shaver according to claim 1, characterized in that, The cutting edge surfaces of the strip-shaped blades (400) are arc-shaped, and the arc surfaces of the cutting edge surfaces are consistent with the inner wall radian of the cutter net assembly (200).

8. The cylindrical toroidal shaver according to claim 1, wherein, The number of the strip-shaped blades (400) is two or more, and they are equally divided and installed on the rotating shaft (300).

9. The cylindrical toroidal shaver according to claim 1, wherein, The distance from the upper edge of the hole area to the top end of the cutter net assembly (200) is less than 15 mm.

10. The cylindrical toroidal shaver according to claim 1, wherein, The hole area is circumferentially distributed on the cylindrical side surface of the cutter net assembly (200).