Shaver head unit and shaver

Abstract

This invention discloses a shaving head unit and a razor. The shaving head unit includes a shaving foil and a circular blade. The shaving foil has at least one inner ring shaving track and one outer ring shaving track. Both the inner and outer ring shaving tracks are arched and concentrically arranged. Each inner ring shaving track has several circular holes and irregularly shaped holes, and the outer ring shaving track has several strip-shaped holes. The circular blade is rotatably mounted on the shaving foil and has several horizontal blades respectively positioned close to the inner surface of each inner and outer ring shaving track. The irregularly shaped holes are curved, and the shearing angle of the horizontal blades within the irregularly shaped holes is greater than that within the strip-shaped holes. In this technical solution, the design of the circular and irregularly shaped holes can capture beard hairs of varying lengths, thereby improving shaving efficiency. Furthermore, the arched shaving tracks facilitate movement and close contact during shaving, improving shaving comfort.

Description

Technical Field

[0001] This invention relates to the field of shaving tools, and particularly to a blade unit and a razor. Background Technology

[0002] An electric shaver consists of a stainless steel mesh cover, inner blades, a miniature motor, and a housing. The mesh cover, which holds the outer blades in place, has many holes through which whiskers can be inserted. The miniature motor, powered by electricity, rotates the inner blades, using a shearing principle to cut the whiskers inserted into the holes.

[0003] Most rotary shaver heads on the market are flat, with straight cutting grooves. They also have narrow blades that don't cover the cutting edges on the foil well, resulting in low shaving efficiency and poor comfort when moving. Summary of the Invention

[0004] The main objective of this invention is to provide a shaving head unit and a shaver that addresses the technical problems of low shaving efficiency and poor comfort when moving in existing shavers.

[0005] To achieve the above objectives, the cutting head unit proposed in this invention includes:

[0006] The shaving foil has at least one inner ring shaving rail and one outer ring shaving rail, both of which are arched and concentrically arranged. Each inner ring shaving rail has a plurality of round holes and irregularly shaped holes, and the outer ring shaving rail has a plurality of strip-shaped holes; and...

[0007] A circular blade is rotatably mounted on the blade net and has several horizontal blades respectively disposed near the inner surface of each inner and outer shaving track.

[0008] The irregular hole is curved, and the shearing angle of the cross blade within the irregular hole is greater than that of the strip hole.

[0009] Optionally, each of the transverse blades is evenly distributed circumferentially, and the extension direction of the blade edge is perpendicular to its tangential direction.

[0010] Optionally, the round holes and the irregular holes are alternately arranged and evenly distributed along the circumference of the inner ring shaving track.

[0011] Optionally, each of the strip-shaped holes is evenly distributed circumferentially on the outer ring shaving track.

[0012] Optionally, each of the strip-shaped holes is obliquely arranged on the outer surface of the outer ring shaving track.

[0013] Optionally, the strip-shaped hole also includes a side hole extending longitudinally from the outside of the outer ring shaving track for inserting the beard.

[0014] Optionally, the irregular hole includes two arc-shaped oblique holes.

[0015] Optionally, the circular cutter has a rotating hole at its center, and the blade mesh has a cylinder at its center that mates with the rotating hole, so as to position the circular cutter when it rotates.

[0016] Optionally, the circular cutter is disc-shaped, and each of the transverse blades is integrally formed with the main body of the circular cutter.

[0017] The present invention also proposes a razor comprising at least one of the above-described blade units.

[0018] In the technical solution of this invention, by creating strip-shaped holes on the outer ring shaving track of the shaving foil, and creating round holes and irregularly shaped holes on the inner ring shaving track of the shaving foil, during shaving, the horizontal blade on the round blade can quickly trim long beard hairs that extend into the outer strip-shaped hole; after short beard hairs enter the inner side, the round holes and irregularly shaped holes can capture beard hairs of varying lengths, and the cutting angle of the horizontal blade in the irregularly shaped hole is greater than that in the strip-shaped hole, which can increase the cutting force on shorter beard hairs, thereby improving shaving efficiency. In addition, the arched shaving track facilitates movement and close contact during shaving, improving shaving comfort. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural diagram of an embodiment of the cutting head unit provided by the present invention;

[0021] Figure 2 for Figure 1 The main view;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the center blade mesh;

[0023] Figure 4 for Figure 1 Schematic diagram of the structure of a medium-sized circular cutter;

[0024] Figure 5 for Figure 4 The main view;

[0025] Figure 6 for Figure 4 A structural diagram from another perspective;

[0026] Figure 7 for Figure 1 A planar schematic diagram of the irregular hole.

[0027] In the diagram: shaving head unit-100, blade foil-1, inner ring shaving rails-11, 12, round hole-112, irregular hole-113, oblique hole-113a, outer ring shaving rails-13, strip hole-131, side hole-131a, cylinder-14, round blade-2, mounting part-2a, cross blade-21, rotating hole-22.

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] To better describe and illustrate the embodiments of this application, reference may be made to one or more accompanying drawings, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of any of the inventive creations of this application, the embodiments or preferred methods described herein.

[0031] In the description of this invention, it should be noted that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and do not indicate that the device referred to must have a specific orientation or operate in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0033] Most rotary shaver heads on the market are flat, with straight cutting grooves. They also have narrow blades that don't cover the cutting edges on the foil well, resulting in low shaving efficiency and poor comfort when moving.

[0034] In view of this, the present invention provides a blade head unit, which is generally installed in the head of a shaving device for conforming to the skin and cutting hair. Figure 1-6 This is an embodiment of the cutter head unit provided by the present invention. Please refer to [link / reference]. Figure 1-6 The cutter head unit 100 includes a cutter head and a circular cutter.

[0035] Specifically, please refer to Figure 1 and 4 The surface of the shaving net 1 has two inner ring shaving tracks 11 and 12, with the inner ring shaving track 12 located outside the inner ring shaving track 11. The surface of the shaving net also has one outer ring shaving track 13, located outside the inner ring shaving tracks 11 and 12, i.e., outside the inner ring shaving track 12. Of course, there can be one or three inner ring shaving tracks, but in this embodiment, two tracks are more suitable for track distribution during shaving. It should be noted that the inner ring shaving tracks 11 and 12 and the outer ring shaving track 13 are all arched and concentrically arranged, and the arched arrangement can be either flat arched or circular arched. In this embodiment, all tracks are flat arched, meaning the surface of the track is flat. Of course, they can also be designed as circular arched tracks, which make the shaving net 1 more comfortable to move. The circular blade 2 is circular and rotatably mounted on the blade net 1. The circular blade 2 has a plurality of horizontal blades 21 respectively disposed close to the inner surface of each of the inner ring shaving tracks 11, 12 and outer ring shaving tracks 13.

[0036] Furthermore, the inner ring shaving tracks 11 and 12 each have several round holes 112 and irregularly shaped holes 113 on their planes, while the outer ring shaving track 13 has several strip-shaped holes 131 on its plane. It should be noted that the irregularly shaped holes 113 are curved, and the cutting angle of the horizontal blade 21 within the irregularly shaped holes 113 is greater than that within the strip-shaped holes 131. During shaving, the foil 1 is placed against the skin and moved; longer hairs enter the strip-shaped holes 131 and are shortened. Then, with further movement, hairs of varying lengths enter the round holes 112 and irregularly shaped holes 113 and are shortened again. It should be noted that the number of round holes 112, irregularly shaped holes 113, and strip-shaped holes 131 can be selected according to the size of the foil and the thickness of the beard.

[0037] In the technical solution of this invention, by opening strip-shaped holes 131 on the outer ring shaving track 13 of the blade net 1, and opening round holes 112 and irregularly shaped holes 113 on the inner ring shaving tracks 11 and 12 of the blade net 1, when shaving, the horizontal blade 21 on the round blade 2 can quickly shorten long beard hairs that extend into the outer strip-shaped holes 131; after short beard hairs enter the inner side, the round holes 112 and irregularly shaped holes 113 can capture beard hairs of different lengths, and the cutting angle of the horizontal blade 21 in the irregularly shaped holes 113 is greater than that in the strip-shaped holes 131, which can increase the cutting force on shorter beard hairs, thereby improving shaving efficiency. In addition, the arched shaving track is conducive to movement and close contact during shaving, improving shaving comfort.

[0038] Please see Figure 4-6 In one embodiment of the present invention, each of the horizontal blades 21 is evenly distributed along the circumference of the circular blade 2, and the extension direction of the blade edge of each horizontal blade 21 is perpendicular to its tangential direction, that is, pointing towards the center of the circular blade 2. Furthermore, in this embodiment, there are 15 horizontal blades 21 near the outer ring shaving track 13, 8 horizontal blades 21 near the inner ring shaving track 12, and 5 horizontal blades 21 near the inner ring shaving track 11. Of course, other numbers can also be used, and the distribution can be based on the size of the track radius.

[0039] Please see Figure 1 and 2 In one embodiment of the present invention, the round holes 112 and the irregularly shaped holes 113 are alternately arranged. On the inner ring shaving tracks 11 and 12, a plurality of round holes 112 are arranged together, and a plurality of irregularly shaped holes 113 are arranged sequentially and evenly distributed along the circumference of the inner ring shaving tracks 11 and 12. It should be noted that the diameter of the round holes 112 and the irregularly shaped holes 113 can be adaptively adjusted according to the thickness of the beard.

[0040] Please see Figure 1 and 2 In one embodiment of the present invention, the strip-shaped holes 131 are arranged sequentially and are evenly distributed circumferentially on the outer ring shaving track 13. It should be noted that the diameter of the strip-shaped holes 131 can be adaptively adjusted according to the thickness of the beard.

[0041] Please see Figure 1 and 2In one embodiment of the present invention, to enable the horizontal blade 21 to better cut the beard with the strip holes 131 on the outer ring shaving track 13, each of the strip holes 131 is obliquely arranged on the outer surface of the outer ring shaving track 13, that is, off-center. Since the foil 1 and the circular blade 2 are concentrically arranged, during shaving, the extension direction of the blade edge of the horizontal blade 21 and the hole wall of the strip hole 131 form a cutting angle to facilitate beard cutting. To prevent the strip holes 131 from being excessively oblique and affecting beard insertion, the angle of the strip holes 131 off-center from the foil is 10°. In other embodiments, it can be selected to be between 9° and 11°, that is, the cutting angle is designed to be between 9° and 11°. Of course, the extension direction of the blade edge can also be designed to be off-center, with the length direction of the strip hole 131 pointing towards the center, but this design is prone to affecting the performance of the blade in the long run and is also not convenient for blade design.

[0042] Please see Figure 1 In one embodiment of the present invention, the outer ring shaving track 13 is located at the outermost edge of the blade net 1, that is, its arched side is the sidewall of the blade net 1, and the strip hole 131 also includes a side hole 131a extending longitudinally from the outer side of the outer ring shaving track 13; during shaving, the outer surface of the blade net 1 moves on the skin, so that longer beard hairs can be inserted into the blade net 1 through the side hole 131a.

[0043] Please see Figure 1 , 2In one embodiment of the present invention, to facilitate the cutting and shaving of shorter and stiffer beards, the irregularly shaped hole 113 is elongated and formed by splicing two arc-shaped oblique holes 113a, with an arc value of π / 9. In other embodiments, the size of the irregularly shaped hole 113 can be adjusted according to its size. Furthermore, the arc edges of the two oblique holes 113a are centrally symmetrical, meaning they are centrally symmetrical. The tangents at both ends of the arc edges of the irregularly shaped hole 113 are offset from the center of the blade mesh 1. The angle is 11°, and in other embodiments, it can be selected between 11° and 12°, meaning the shearing angle at both ends of the irregular hole 113 is designed to be between 9° and 11°. As it extends towards the center of the arc edge, the angle of tangent offset increases accordingly. The angle of tangent offset is largest at the connection point of the center of the arc edge of the irregular hole 113, which is 17°. In other embodiments, it can be selected between 16° and 18°, meaning the shearing angle in the middle of the irregular hole 113 is designed to be between 16° and 18°. Therefore, when the beard enters the irregular hole 113, the horizontal blade 21 rotates and shaves. The beard located in the middle of the irregular hole 113 has a larger shearing angle and receives a larger shearing force, resulting in higher shaving efficiency. The beard located on both sides of the center of the irregular hole 113 experiences a smaller shearing angle. With this design, as the blade net 1 moves, the shearing is smoother as the beard continuously enters the irregular hole 113. Combined with the use of the round hole 112, it can greatly improve the comfort of shaving.

[0044] Please see Figure 4 and 6 In one embodiment of the present invention, a mounting member 2a is fixedly provided at the center of the circular blade 2. The center of the mounting member 2a is provided with a rotating hole 22 at one end facing the blade mesh 1. The center of the blade mesh 1 is provided with a cylinder 14 that matches the shape of the rotating hole 22. The rotating hole 22 can rotate around the cylinder 14 for positioning the circular blade. The other end of the mounting member 2a is connected to the rotating shaft of the motor to drive the circular blade 2 to rotate.

[0045] Please see Figure 4 and 6 In one embodiment of the present invention, the circular blade 2 is disc-shaped, and each of the transverse blades 21 is integrally formed with the main body of the circular blade 2; that is, the cutting edge of the transverse blade 21 is formed by cutting from the main body of the circular blade 2. This effectively utilizes the base material and increases the strength and rigidity of the main body of the circular blade 2. In addition, the cutting edge of the transverse blade 21 is widened, and its width is at least 50% wider than that of similar products, resulting in higher cutting efficiency.

[0046] The present invention also proposes a razor, which includes at least one of the above-mentioned blade unit 100, and is commonly used in some dual-head or triple-head razors; it should be understood that the razor also includes a motor, a power supply and a housing and other structures.

[0047] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A blade unit, disposed on the head of a shaving device, for conforming to the skin and cutting hair, characterized in that, include: The shaving foil (1) has at least one inner ring shaving rail (11, 12) and one outer ring shaving rail (13). Each of the inner ring shaving rails (11, 12) and the outer ring shaving rail (13) is arched and concentrically arranged. Each of the inner ring shaving rails (11, 12) has a plurality of round holes (112) and irregularly shaped holes (113). The outer ring shaving rail (13) has a plurality of strip-shaped holes (131). The circular blade (2) is rotatably disposed on the blade net (1) and has a plurality of horizontal blades (21) respectively disposed close to the inner surface of each inner ring shaving track (11, 12) and outer ring shaving track (13). The irregular hole (113) is curved, and the shearing angle of the cross blade (21) in the irregular hole (113) is greater than that of the strip hole (131). Each of the strip holes (131) is obliquely arranged on the outer surface of the outer ring shaving track (13), and the blade extension direction of the horizontal blade (21) and the hole wall of the strip hole (131) form a shearing angle, which is designed to be between 9° and 11°. The irregular hole (113) is elongated and is formed by splicing two arc-shaped oblique holes (113a), with an arc size of π / 9. The arc edges of the two oblique holes (113a) are centrally symmetrical, that is, the two oblique holes (113a) are centrally symmetrical. The angle at which the tangents at both ends of the arc edge of the irregular hole (113) deviate from the center of the knife mesh (1) is between 11° and 12°, that is, the shearing angle at both ends of the irregular hole (113) is designed to be between 9° and 11°. The angle at which the tangent at the center connection point of the arc edge of the irregular hole (113) deviates is between 16° and 18°, that is, the shearing angle in the middle of the irregular hole (113) is designed to be between 16° and 18°.

2. The cutter head unit as described in claim 1, characterized in that, Each of the horizontal blades (21) is evenly distributed along the circumference of the circular blade (2), and the extension direction of the blade edge is perpendicular to its tangential direction.

3. The cutter head unit as described in claim 2, characterized in that, The round holes (112) and the irregular holes (113) are alternately arranged and are evenly distributed along the circumference of the inner ring shaving track (11, 12).

4. The cutter head unit as described in claim 1, characterized in that, Each of the strip-shaped holes (131) is evenly distributed circumferentially on the outer ring shaving track (13).

5. The cutter head unit as described in claim 1, characterized in that, The strip-shaped hole (131) also includes a side hole (131a) extending longitudinally from the outside of the outer ring shaving track (13) for inserting the beard.

6. The cutter head unit as described in claim 1, characterized in that, The circular cutter (2) has a rotating hole (22) at its center, and the blade mesh (1) has a cylinder (14) at its center that cooperates with the rotating hole (22) to position the circular cutter (2) when it rotates.

7. The cutter head unit as described in claim 1, characterized in that, The circular blade (2) is disc-shaped, and each of the horizontal blades (21) is integrally formed with the main body of the circular blade (2).

8. A razor, characterized in that, The razor includes at least one blade head unit, which is the blade head unit according to any one of claims 1-7.

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