CN113183185A

CN113183185A - Tool bit subassembly and shaver

Info

Publication number: CN113183185A
Application number: CN202110440325.1A
Authority: CN
Inventors: 李高艳
Original assignee: Zhejiang Zhibo Electrical Appliance Technology Co ltd
Current assignee: Zhejiang Zhibo Electrical Appliance Technology Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-07-30

Abstract

The invention discloses a cutter head component, which comprises a cutter mesh disc, an annular wall and a cutter rest which are coaxially arranged; the cutter mesh disc is provided with outer fixed cutters along the edge, and an outer entering groove is formed between every two adjacent outer fixed cutters; the cutter frame is provided with an external moving cutter, the external moving cutter is matched with the external fixed cutter to cut hair, an annular collecting groove is formed between the edge of the cutter mesh disc and the edge of one end, close to the skin, of the annular wall, the cutter head assembly further comprises guide comb teeth arranged on the periphery of the annular wall, the guide comb teeth basically extend along the axial direction of the cutter mesh disc and limit a hair removing area, tooth bodies of the guide comb teeth are used for shunting the hair, and shunting channels are formed between the adjacent guide comb teeth. The invention has the advantages of improving the shaving efficiency and protecting the skin.

Description

Tool bit subassembly and shaver

Technical Field

The invention relates to a cutter head component and a shaver, and mainly relates to the technical field of hair shaving appliances.

Background

Currently, appliances for shaving hair (including beard and body hair) are classified into manual and electric according to power, and electric is classified into two types, i.e., rotary and reciprocating, according to motion. The rotary type cutter is basically the same in structure no matter with a single head or multiple heads, the movable cutter is arranged on the cutter frame, and the rotating of the cutter frame is matched with the fixed cutter on the cutter net disc, so that hairs entering the cutter net disc are cut and shaved. The hair feeding amount of the cutter mesh disc is an important index for measuring the hair shaving efficiency.

For example, patent application with prior art publication No. CN112140149A discloses a cutter head assembly for an electric shaver, which comprises a mesh enclosure and a knife rest, wherein the mesh enclosure comprises a support ring and an outer knife net, an inner knife net, an outer blade is arranged on the knife rest corresponding to the outer knife net, an inner blade is arranged on the knife rest corresponding to the inner knife net, the outer blade and the outer knife net can be matched for cutting, the inner blade and the inner knife net can be matched for cutting, the inner ring of the outer knife net is connected with the outer ring of the inner knife net, a plurality of connecting pieces are arranged between the outer ring of the outer knife net and the support ring, hollow parts are formed between adjacent connecting pieces at intervals, the outer knife net is formed into a ring shape by a plurality of saw teeth, each saw tooth is located on the same plane, the thickness of the outer knife net is greater than that of the inner knife net, and the outermost end of the outer blade is located inside of the tooth tips on the outer knife net. When the hair cutting device is used, the outer knife net formed by the surrounding of the sawteeth can lead overlong hairs into the hollow-out parts between the adjacent connecting sheets, so that the overlong hairs enter the net cover for cutting, the phenomena of hair clamping and pulling are avoided, and the comfort is strong; when the secondary trimming is carried out, the fine trimming can be realized by utilizing the inner cutter mesh and the inner cutter blade, and a better trimming effect is achieved.

Although this cutter head subassembly has improved into hair volume through setting up fretwork portion to have better response effect to longer hair, still there is the defect:

firstly, the outer knife net and the inner knife net are tightly attached to the skin when in use, particularly, the relatively sharp sawteeth on the outer knife net can hurt the skin, and particularly, when the knife head component is pressed on the skin to shave off the skin, the damage degree of the sawteeth to the skin is increased, so that the skin is red and swollen. In addition, if the skin is relatively wrinkled, the serrations are also very susceptible to scratching or even lacerating the skin during shaving, resulting in bleeding.

Secondly, for the condition that the hair is soft and curly or the hair is intertwined with each other, the hair can be pressed on the skin and cannot stand up, even if the hair with the hollow part can not enter the outer cutter mesh or the inner cutter mesh, the hair can be shaved off repeatedly, and the efficiency is low.

Disclosure of Invention

The invention aims to provide a cutter head component and a shaver, which can improve the shaving efficiency and protect the skin.

The invention is realized by the following technical scheme.

A cutter head assembly comprises a cutter mesh disc, an annular wall and a cutter frame which are coaxially arranged; a plurality of sawtooth-shaped outer fixed knives are arranged along the edge of the knife net disc, and a peripheral entering groove for hairs to enter along the radial direction is formed between every two adjacent outer fixed knives; the cutter rest is provided with an external moving cutter, and the external moving cutter and the external fixed cutter are matched to cut hair when the cutter rest rotates around the axis of the cutter rest; the annular wall and the knife net disc are integrally connected and form a bevel relationship; an annular collecting groove is formed between the edge of the knife net disc and the edge of one end, close to the skin, of the annular wall and is used for collecting hairs to enable the hairs to enter the peripheral entering groove more easily; the peripheral entering groove is communicated with the break angle of the annular collecting groove to provide a three-dimensional space for the collection and entering of the hair to be cut;

the cutter head assembly further comprises guide comb teeth arranged on the periphery of the annular wall; the guide comb teeth extend along the axial direction of the knife net disc basically, and the highest position of the end parts of the guide comb teeth is not lower than the top surface of the knife net disc and is used for supporting the skin so that the probability of the edge of the knife net disc contacting the skin is reduced; the guide comb teeth define a hair shaving area; the tooth bodies of the guide comb teeth are used for combing and shunting hair, and a shunting channel is formed between the adjacent guide comb teeth for the hair to enter a hair shaving area.

As a further improvement of the invention, the cutter head component also comprises a cutter head seat which is coaxial with the cutter mesh disc and is cylindrical, and the cutter head seat is opened at two ends; the root of the comb teeth is planted on the edge of the cutter head seat close to one end of the skin; the annular wall is inserted on the end of the cutter head seat close to the skin in a sliding way; the skin and the hair on the skin can push against the hair on the knife net disc and push the knife net disc and the annular wall to slide and contract towards the knife head seat.

As a further improvement of the invention, an elastic reset structure is arranged in the tool bit seat and used for driving the tool net disc and the annular wall to slide and reset.

As a further improvement of the invention, a first stop point and a second stop point are formed in the tool bit seat along the axial direction, and the sliding range of the tool net disc, the annular wall and the tool holder is limited between the first stop point and the second stop point.

As a further improvement of the invention, a plurality of sheet-shaped inner fixed knives are arranged on the knife net disc around the axis of the knife net disc, and an inner periphery entering groove for hairs to enter along the axial direction is formed between the adjacent inner fixed knives; the knife rest is provided with an inner moving knife, and the inner moving knife and the inner fixed knife are matched to cut hair when the knife rest rotates around the axis of the knife rest.

As a further improvement of the invention, the outward extending direction of the peripheral entering groove is deviated from the radial direction of the cutter mesh disc, and the deviated direction is opposite to the rotating direction of the cutter frame; the outward extending direction of the inner periphery entering groove is deviated from the radial direction of the cutter mesh disc, and the deviated direction is in the same direction with the rotating direction of the cutter frame.

As a further improvement of the invention, the width of the annular collecting groove is 0.2mm-0.7 mm.

As a further improvement of the invention, the end parts of the guide comb teeth are formed by smoothly folding the side surfaces.

As a further improvement of the invention, the lowest part of the bottom of the flow dividing channel is not higher than the lowest part of the annular collecting groove.

A shaver comprises a cutter head component, a shell and a motor; the tool bit seat is fixed at one end of the shell, the motor is arranged in the shell, and an output shaft of the motor is in transmission connection with the tool rest through a connecting shaft structure.

The invention has the beneficial effects that:

1. the guide comb teeth are supported on the skin, so that the outer fixed knife at the edge of the knife net disc reduces the chance of contacting the skin, and the damage to the skin is reduced.

2. The tooth body of the guide comb tooth is used for shunting hair, plays a role in combing the hair, erects the hair which is flatly attached to the skin, and enters a hair shaving area through the shunting channel.

3. The guide comb teeth are matched with the annular collecting grooves, so that the hair feeding amount in unit time or area can be increased, and the length of cut hair is obviously longer.

4. The comb teeth can improve the skin affinity, smooth ends contacted with the skin in the process of shaving hair are shaved, and the protective effect on epidermis is effectively improved.

5. The knife net disc and the annular wall can be jacked up by skin and hairs on the skin and pushed to retract into the knife head seat, so that the hairs can more easily enter the inner periphery and enter the groove for cutting.

Drawings

The preferred embodiments of the present invention will hereinafter be described in detail to facilitate understanding of the objects and advantages of the invention, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a cutter head assembly according to embodiment 1;

FIG. 2 is a schematic top view of a knife disk of embodiment 1;

FIG. 3 is a schematic view showing the structure of the tool holder according to embodiment 1;

FIG. 4 is a schematic cross-sectional view of a cutter head assembly of embodiment 1;

fig. 5 is a schematic sectional view of the shaver according to embodiment 2.

Detailed Description

The invention is explained in more detail below with reference to the drawings and exemplary embodiments.

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

Example 1:

referring to fig. 1-4, a cutter head assembly comprises a cutter mesh disc 1, an annular wall 2, a cutter frame 3 and a guide comb tooth 4, wherein the cutter mesh disc 1, the annular wall 2 and the cutter frame 3 are coaxially arranged, one end of the annular wall 2 close to the skin is integrally connected with the edge of the cutter mesh disc 1 through a plurality of connecting sheets crossing the cutter mesh disc and the annular wall 2, and the annular wall 2 and the cutter mesh disc 1 are in a folded angle relationship, so that the cutter mesh disc 1 and the annular wall 2 form a cap-shaped integral structure, and an annular collecting groove J3 is formed between the edge of the cutter mesh disc 1 and the edge of one end of the annular wall 2 close to the skin and is used for collecting hairs to enable the hairs to more easily enter an outer peripheral entering groove J1. The knife holder 3 is located in a cover-like structure formed by the knife net disc 1 and the cover body, and the center point of the knife net disc 1 is rotatably connected with the knife net disc 3. A plurality of outer fixed cutters 11 in a sawtooth shape are arranged along the edge of the knife net disc 1, a peripheral entering groove J1 for hairs to enter along the radial direction is formed between the outer fixed cutters 11, a plurality of inner fixed cutters 12 in a sheet shape are arranged on the knife net disc 1 around the axis of the knife net disc, and an inner peripheral entering groove J2 for the hairs to enter along the axial direction is formed between the adjacent inner fixed cutters 12; the peripheral inlet groove J1 is communicated with the annular collecting groove J3 at the break angle, and provides a three-dimensional space for collecting and entering the hair to be cut. The cutter frame 3 is provided with an external cutter 31 and an internal cutter 32, the external cutter 31 is matched with the external fixed cutter 11 to cut hair when the cutter frame 3 rotates around the axis of the cutter frame, and the internal cutter 32 is matched with the internal fixed cutter 12 to cut hair when the cutter frame 3 rotates around the axis of the cutter frame.

The comb teeth 4 are arranged on the periphery of the annular wall 2 and extend substantially in the axial direction of the wire disc 1, the highest of the ends 4-1 of which is not lower than the top surface of said wire disc 1. When shaving hair using the cutter head assembly, the ends 4-1 of the leading comb teeth 4 are supported on the skin so that the outer stationary knives 11 at the edges of the knife net disk 1 reduce the chance of contacting the skin; in particular, shaving relatively smooth skin avoids the outer stator 11 contacting the skin. The comb teeth 4 are supported on the skin to define a hair-shaving area in a circular shape corresponding to the range of the cutter head assembly covered on the skin. The tooth bodies of the guide comb teeth 4 are used for combing and shunting the hair, a shunting channel P is formed between the adjacent guide comb teeth 4 so that the hair can enter a hair shaving area, and the lowest part of the bottom of the shunting channel P is not higher than the lowest part of the annular collecting groove J3. .

The cutter head component of the application shaves the hair process as follows: the comb teeth 4 are supported on the skin and define a hair shaving area in the shape of a ring, and the comb teeth 4 comb the hairs as the cutter head assembly slides over the skin, so that the hairs enter the hair shaving area from the corresponding shunt passage P. The longer hairs are collected in the annular collecting groove J3 between the edge of the knife net disc 1 and the edge of the annular wall 2, and then enter the different peripheral entering grooves J1 from the outside of the knife net disc 1 along the radial direction of the knife net disc, and are cut by the matching of the outer fixed knife 11 and the outer movable knife 31. The hairs (hairs which are not completely shaved and shorter hairs) located between the surface of the cutter net disk 1 and the skin enter the inner peripheral entering groove J2 along the axial direction of the cutter net disk 1, and are cut or secondarily cut by the cooperation of the inner fixed cutter 12 and the inner movable cutter 32.

Based on the hair shaving process, the guide comb teeth 4, the flow dividing channel P formed between the guide comb teeth 4, the annular wall 2, and the annular collecting groove J3 between the annular wall 2 and the cutter mesh disc 1 form a combined structure of a 'fence half wall'.

Compared with the prior art, the guide comb teeth 4 are supported on the skin, so that the outer fixed knife 11 with the edge of the knife net disc 1 in a sawtooth shape is reduced in the chance of contacting with the skin, the damage to the skin of the outer fixed knife 11 is reduced, the skin is prevented from being inflamed, and the risk that the skin is scratched by the outer fixed knife 11 due to skin wrinkles can be reduced.

In order to improve the skin affinity of the guide comb teeth 4, the guide comb teeth 4 are structurally arranged to be in a columnar structure, the end parts 4-1 of the guide comb teeth are formed by folding the side surfaces smoothly, and basically, the guide comb teeth are in a round head-shaped structure, so that the guide comb teeth are in smooth contact with the skin, and the protective effect on the skin is achieved. When the cutter head component is pressed on the skin by force, the hair shaving area presents an arc surface with an upward bulge in the middle and a downward depression in the periphery, the downward depression in the periphery is due to the function of the guide comb teeth 4, and the skin is not damaged due to the skin-friendly property of the guide comb teeth 4, but the arc surface presented by the hair shaving area can have a flattening effect on wrinkles on the skin, so that the smoothness of the skin is improved, and the hair can be shaved more easily.

In addition, when the hair-shaving area of the guide teeth 4 of the "hedge half-wall" is pressed against the skin at the edge of the hair-shaving area, the skin is tightened when contacting the wrinkled skin, and the hair is more easily cut into the annular collecting groove J3 of the "hedge half-wall" and further into the peripheral entering groove J1, compared with the prior art in which the outer stationary knife 11 pushes the skin so that the entire cutter net disc 1 presses the skin.

The "picket-half-wall" comb teeth 4 also have a very important function of combing hairs before they enter the hair-shaving area, especially for softer, curly, intertwined hairs, which are essentially flat against the skin, and the combing action of the comb teeth 4 allows such hairs to be raised and then to pass through the shunt passage P into the hair-shaving area, where they are more easily caught and collected by the annular collection groove J3 and enter the peripheral entry groove J1. Therefore, under the action of the guide comb teeth 4, the annular collecting groove J3 and the peripheral entering groove J1, the hair feeding amount per unit time or area of the cutter head assembly is greatly improved, and the length of cut hair is obviously longer.

The annular collection groove J3 of "hedge half wall" is particularly suitable for catching and collecting longer hairs, theoretically, the larger the width of the annular collection groove J3 is, the stronger the performance of catching and collecting long hairs is, and the larger the hair feeding amount is, but in practical application, the too wide annular collection groove J3 may cause hairs to wind on the knife rest 3 or the outer fixed knife 11, and then the matching cutting performance between the knife net disc 1 and the knife rest 3 is affected, so in this embodiment, the width of the annular collection groove J3 is limited to 0.2mm-0.7mm, and the hair feeding amount can be improved on the premise of avoiding hairs from winding on the knife rest 3.

In addition, the outward extending direction T1 of the peripheral entering groove J1 is inclined to the radial direction of the knife net disc 1, and the inclined direction is opposite to the rotating direction T3 of the knife rest 3, so that when the knife rest 3 rotates to drive the external knife 31 and the external fixed knife 11 to cut in a matching way, hairs in the peripheral entering groove J1 easily slide out, and the hair shaving efficiency of the external knife 31 and the external fixed knife 11 is improved. The outward extending direction of the inner periphery entering groove J2 is deviated from the radial direction of the knife net disc 1, and the deviated direction T2 is in the same direction with the rotating direction T3 of the knife rest 3, so that when the inner moving knife 32 is matched with the inner fixed knife 12 for cutting, hair is pushed to one end of the inner periphery entering groove J2 away from the central point of the knife net disc 1, the cutting position of the inner moving knife 32 is the position with the fastest linear speed, and the cutting performance of the inner moving knife 32 and the inner fixed knife 12 is improved.

The cutter head component also comprises a cutter head seat 5 which is coaxial with the cutter mesh disc 1, the cutter head seat 5 is cylindrical and is provided with openings at two ends, the root parts 4-2 of the guide comb teeth 4 are planted on the edge of one end of the cutter head seat 5 close to the skin, and the annular wall 2 is inserted into the port of the cutter head seat 5 close to the skin in a sliding manner.

The end of the tool bit seat 5 close to the skin is defined as a head end, the end far away from the skin is defined as a tail end, the inner wall of the tool bit seat 5 is provided with a ring of step structure 51 at a position close to the head end, a support ring 52 supported on the inner wall of the tool bit seat 5 is further arranged in the tool bit seat 5, the support ring 52 is closer to the tail end of the tool bit seat 5 relative to the step structure 51, the support ring 52 and the inner wall of the tool bit seat 5 between the step structure and the support ring form an annular groove 5-a, the outer surface of the annular wall 2 is provided with a ring of flange structure 2-b protruding in the radial direction, the flange structure 2-b is clamped in the annular groove 5-a and can slide in the axial direction, and the step structure 51 and the support ring 52 form a first stop point and a second stop point for limiting the range of the annular wall 2 and the cutter mesh disc 1 sliding in the axial direction.

The limited axial sliding of the annular wall 2 and the knife net disk 1 can form a floating longitudinal space between the knife net disk 1 and the skin, the skin and hairs on the skin are pressed against the knife net disk 1 and can push the knife net disk 1 and the annular wall 2 to slide and contract towards the cutter head seat 5, so that the hairs can enter the inner periphery of the knife net disk 1 into the groove J2 along the axial direction, and other hairs can be bounced and enter the inner periphery into the groove J2 together more easily. In addition, an elastic reset structure 53 is further disposed in the tool bit seat 5 to drive the knife net disc 1 and the annular wall 2 to slide and reset, and in this embodiment, the elastic reset structure 53 is a compression spring.

Example 2:

referring to fig. 5, a shaver includes a cutter head assembly of embodiment 1, a housing 6, and a motor 7. The machine shell 6 is of a cylindrical structure, the tool bit seat 5 is fixed at one end of the machine shell 6, the motor 7 is arranged in the machine shell, and an output shaft of the motor is in transmission connection with the tool rest 3 through a connecting shaft structure 8. In addition, a cover 9 is arranged and can be buckled on the machine shell to cover the cutter head component.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments can be modified, or some technical features can be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cutter head component comprises a cutter mesh disc (1), an annular wall (2) and a cutter rest (3) which are coaxially arranged; a plurality of zigzag outer fixed knives (11) are arranged along the edge of the knife net disc (1), and a peripheral entering groove (J1) for hairs to enter along the radial direction is formed between every two adjacent outer fixed knives (11); the knife rest (3) is provided with an external moving knife (31), and the external moving knife (31) and the external fixed knife (11) are matched to cut hair when the knife rest (3) rotates around the axis of the knife rest; the annular wall (2) and the knife net disc (1) are integrally connected and form a bevel relationship; an annular collecting groove (J3) is formed between the edge of the knife net disc (1) and the edge of one end of the annular wall (2) close to the skin, and is used for collecting the hairs to enable the hairs to enter the peripheral entering groove (J1) more easily; the peripheral inlet groove (J1) is communicated with the annular gathering groove (J3) in a folded angle mode, and a three-dimensional space is provided for gathering and entering the hair to be cut;

the method is characterized in that:

the cutter head assembly also comprises guide comb teeth (4) arranged on the periphery of the annular wall (2); the comb teeth (4) extend along the axial direction of the knife net disk (1) basically, and the highest position of the end part (4-1) of the comb teeth is not lower than the top surface of the knife net disk (1) and is used for supporting the skin so that the edge of the knife net disk (1) reduces the chance of contacting the skin; the comb teeth (4) defining a hair shaving area; the tooth bodies of the guide comb teeth (4) are used for combing and shunting hair, and a shunting channel (P) is formed between the adjacent guide comb teeth (4) for the hair to enter a hair shaving area.

2. The cutter head assembly according to claim 1, further comprising a cylindrical cutter head holder (5) coaxial with the cutter mesh disc (1), the cutter head holder (5) being open at both ends; the root parts (4-2) of the guide comb teeth (4) are planted on the edge of one end, close to the skin, of the tool bit seat (5); the annular wall (2) is inserted on the port of the tool bit seat (5) close to the skin in a sliding way; the skin and the hair on the skin can be pressed against the hair on the knife net disk (1) and push the knife net disk (1) and the annular wall (2) to slide and contract towards the knife head seat (5).

3. The cutter head component according to claim 2, wherein an elastic reset structure (53) is further arranged in the cutter head seat (5) and used for driving the cutter mesh disc (1), the annular wall (2) and the cutter frame (3) to slide and reset.

4. The cutter head assembly according to claim 3, wherein the cutter head seat (5) is formed with a first stop point and a second stop point in the axial direction, and the sliding range of the cutter net disc (1) and the annular wall (2) is limited between the first stop point and the second stop point.

5. The cutter head assembly according to claim 1, wherein a plurality of inner fixed cutters (12) in a sheet shape are arranged on the cutter net disk (1) around the axis thereof, and inner peripheral entering grooves (J2) for hairs to enter along the axial direction are formed between the adjacent inner fixed cutters (12); the knife rest (3) is provided with an inner moving knife (32), and the inner moving knife (32) is matched with the inner fixed knife (12) to cut hair when the knife rest (3) rotates around the axis of the knife rest.

6. The cutter head assembly according to claim 5, wherein the outward extension direction (T1) of the peripheral access slot (J1) is inclined to the radial direction of the cutter head disk (1) and is opposite to the rotation direction (T3) of the cutter head (3); the outward extension direction (T2) of the inner peripheral entering groove (J2) is deviated from the radial direction of the cutter mesh disc (1) and the deviation direction is in the same direction with the rotation direction (T3) of the cutter frame (3).

7. The cutter head assembly of claim 1 wherein the width of the annular collection groove (J3) is 0.2mm to 0.7 mm.

8. Cutter head assembly according to claim 1, characterized in that the ends (4-1) of the guide comb teeth (4) are formed by rounded closure of the sides.

9. The cutter head assembly of claim 1, wherein the lowermost floor of said flow distribution passageway (P) is no higher than the lowermost floor of said annular collection groove (J3).

10. A shaver comprising a head assembly according to any one of claims 1-9, a housing (6), a motor (7); the tool bit seat (5) is fixed at one end of the machine shell (6), the motor (7) is arranged in the machine shell (6), and an output shaft of the motor is in transmission connection with the tool holder (3) through a connecting shaft structure (8).