Patent ID: 12186924

DESCRIPTION OF EMBODIMENTS

The present disclosure will be further described in detail below according to the accompanying drawings and implementation examples.

Orientation terms such as upper, lower, left, right, front, rear, front, back, top, bottom, etc. mentioned or possibly mentioned in the present specification are defined relative to the configurations shown in the drawings, the word “inner” and “outer” refer to directions toward or away from the geometric center of a particular component, respectively, and they are relative concepts, so they may vary accordingly according to their different positions and different states of use. Therefore, these and other terms of orientation should not be construed as limiting.

Example 1

Referring toFIGS.1to4, a shaver head assembly may include a shaver screen1, an annular wall2, a blade holder3, and a plurality of guide comb teeth4. Among them, the shaver screen1, the annular wall2and the blade holder3may be coaxially provided, one end of the annular wall2approaching the skins may be integrally connected with the edge of the shaver screen1through several connecting pieces spanning them. The annular wall2and the shaver screen1may be in an angled relationship, such that the shaver screen1and the annular wall2may constitute a cover-shaped integral structure. In addition, an annular collecting groove J3may be formed between the edges of the shaver screen1and the annular wall2at one end approaching the skin, and may be used to collect hairs and make them easier to enter the outer peripheral entry groove J1. The blade holder3may be located in the cover-shaped structure formed by the blade screen1and the cover body, and its center point may be rotatably connected to the blade screen1. A plurality of serrated outer fixed blades11(outer fixed blades11with jagged shapes) may be provided along the edge of the blade screen1, and an outer peripheral entry groove J1may be formed between the adjacent outer fixed blades11for the hair to enter in the radial direction. The blade screen1may be provided with a plurality of inner fixed blades12in the form of sheets around its axis, An inner peripheral entry groove J2for hair to enter in the axial direction may be formed between adjacent inner fixed blades12. The outer peripheral entry groove J1may be connected with the annular collecting groove J3at an angled relationship, such that 3D openings (gaps) for collecting and access for the hair to be cut are provided. The blade holder3may have a plurality of outer movable blades31and a plurality of inner movable blades32. When the blade holder3rotates around its axis, the plurality of outer movable blades31and the plurality of outer fixed blades11cooperate to cut the hair; and when the blade holder3revolves around its axis, the plurality of inner movable blades32cooperate with the plurality of inner fixed blades12to cut the hair.

A plurality of guide comb teeth4may be provided on the periphery of the annular wall2and basically extend along the axial direction of the shaver screen1. The highest point of its end4-1is not lower than the top surface of the shaver screen1. When using the shaver head assembly to shave hair, the end4-1of each guide comb tooth4may be supported on the skin, such that the outer fixed blades11at the edge of the shaver screen1can reduce the chance of contacting the skin. Specifically, when shaving hair on smooth skin, the outer fixed blades11can be prevented from contacting the skin. The plurality of guide comb teeth4may be supported on the skin to define a circular hair shaving area, and the hair shaving area corresponds to the range covered by the shaver head assembly on the skin. The tooth body of each guide comb tooth4may be used for combing and shunting the hair. A shunt channel P may be formed between the adjacent guide comb teeth4for the hair to enter the hair shaving area. The lowest point of the bottom of each shunt channel P is not higher than the lowest point of the annular collecting groove J3.

In the shaver head assembly of the present disclosure, the process of shaving hair may be as follows: the plurality of guide comb teeth4are supported on the skin and define an annular hair shaving area; as the shaver head assembly slides on the skin, the plurality of guide comb teeth4combine the hair such that the hair enters the hair shaving area from the corresponding shunt channel P. The longer hairs may be then collected in the annular collecting groove J3between the edge of the blade screen1and the edge of the annular wall2, and then enter into different outer peripheral entry grooves J1from the outside of the blade screen1along its radial direction, and can be cut through a cooperation of the outer fixed blades11and the outer movable blades31. The hairs (hairs that are not completely shaved and shorter hairs) located between the surface of the blade screen1and the skin enter the inner peripheral entry groove J2along the axial direction of the blade screen1, and can be cut or re-cut through the cooperation of the plurality of inner fixed blades12and the plurality of inner movable blades32.

Based on the process of shaving hair, the plurality of guide comb teeth4, the shunt channel P formed between the adjacent guide comb teeth4, the annular wall2, the annular collecting groove J3between the annular wall2and the shaver screen1constitute a combined structure with a “fence with a half wall”.

Compared with the prior art, the plurality of guide comb teeth4are supported on the skin, such that the serrated outer fixed blades11on the edge of the shaver screen1can reduce the chance of contacting the skin, thereby reducing the skin damage by the outer fixed blades11. The phenomenon of redness and swelling on the skin can be avoided, and the risk of scratching the skin by the outer fixed blades11due to skin wrinkles can also be reduced.

In order to improve the skin-friendly properties of the plurality of guide comb teeth4, the structure of each guide comb tooth4may be provided in a columnar structure, and its end4-1may be formed by smoothly closing the sides, basically showing a round head-like structure, such that it may be smoother in contact with the skin and has a protective effect on the skin. When the shaver head assembly of the present disclosure is pressed on the skin with 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 may be due to the action of the guide comb teeth4. Due to the skin-friendly nature of the guide comb teeth4, it will not cause damage to the skin. On the contrary, the arc surface presented in the hair shaving area can have the effect of leveling the wrinkles on the skin, improving the smoothness of the skin and making it easier to shave the hair.

In addition, when contacting the wrinkled skin, the guide comb teeth4of the “fence with a half wall” make the skin at the edge of the hair shaving area taut, and there will be no close contact between the hair shaving area and the shaver screen1. Compared with the prior art, the outer fixed blades11push and press the skin such that the entire shaver screen1compresses the skin. In the present disclosure, the hair may be more likely to enter the annular collecting groove J3of the “fence with a half wall”, and then enter the outer peripheral entry groove J1for cutting.

The guide comb teeth4of the “fence with a half wall” also have a very important role in combing the hair before entering the hair shaving area, especially for softer, more curly, intertwined hairs, these types of hairs basically are flat on the skin. The combing action of the guide comb teeth4can make this type of hair erect and enter the hair shaving area through the shunt channel P, such that it may be easier to be captured and collected by the annular collecting groove J3and enter the outer peripheral entry groove J1. Therefore, under the actions of the guide comb teeth4, the annular collecting groove J3, and the outer peripheral entry groove J1, the shaver head assembly of the present disclosure greatly increases the amount of hair feeding per unit time or area, and the length of the cutting hair may be also significantly longer.

The annular collecting groove J3of the “fence with a half wall” is especially suitable for capturing and collecting long hairs. In theory, the larger the width of the annular collecting groove J3, the stronger the performance of capturing and collecting long hair, and the greater the amount of hair entering. In practical application, the excessively wide annular collecting groove J3will cause the hair to wrap around the blade holder3or the outer fixed blades11, which will then affect the cutting performance between the shaver screen1and the blade holder3. Therefore, in the present implementation, the width of the annular collecting groove J3is limited to 0.2 mm-0.7 mm, which can increase the amount of hair feeding on the premise of avoiding the hair wrapping around the blade holder3.

In addition, the outward extending direction T1 of the outer peripheral entry groove J1is inclined to the radial direction of the shaver screen1, and the inclined direction is opposite to the rotating direction T3 of the blade holder3, such that when the blade holder3rotates to drive the outer movable blades31cooperate with the outer fixed blades11to cut, the hair entering the outer peripheral entry groove J1is easy to slide out, which improves the hair shaving efficiency of the outer movable blades31and the outer fixed blades11. The outward extending direction of the inner peripheral entry groove J2is inclined to the radial direction of the blade screen1, and the inclined direction T2 is consistent with the rotating direction T3 of the blade holder3. Therefore, when the inner movable blades32cooperate with the inner fixed blades12for cutting, the hair will be pushed to the end of the inner peripheral entry groove J2away from the center point of the shaver screen1, such that the cutting position of the inner movable blades32are the part with the fastest linear speed, and the cutting performances of the inner movable blades32and the inner fixed blades12are improved.

The shaver head assembly may further include a shaver head seat5that is coaxially provided with the shaver screen1. The shaver head seat5may be cylindrical and may be open at both ends, and the root4-2of the each guide comb tooth4may be implanted on the edge of the end of the shaver head seat5approaching the skins. The annular wall2may be slidably inserted into the port of the shaver head seat5approaching the skins.

The end of the shaver head seat5approaching the skins may be defined as the head end, and the end away from the skin may be defined as the tail end. The inner wall of the shaver head seat5has a circle of step structure51near the head end. The shaver head seat5may be also provided with a support ring52on its inner wall, the support ring52may be closer to the tail end of the shaver head seat5than the step structure51. The step structure51, the support ring52, and the inner wall of the shaver head seat5between them form an annular groove5-a, the outer surface of the annular wall2has a circle of flange structure2-bprotruding radially. The flange structure2-bis stuck in the annular groove5-a, and can slide in the axial direction. While the step structure51and the support ring52constitute the first stop point and the second stop point to limit the sliding range along the axial direction of the annular wall2and the shaver screen1.

The restricted axial sliding of the annular wall2and the blade screen1can form a floating longitudinal space between the blade screen1and the skin. The skin and the hair on the skin are supported on the blade screen1and can push the blade screen1and the annular wall2to slide and contract into the shaver head seat5, such that these hairs can enter the inner peripheral entry groove J2of the shaver screen1in the axial direction, and it may be also easier to make other hairs bounce and enter the inner peripheral entry groove J2. In addition, the shaver head seat5may be also provided with an elastic reset structure53configured for driving the shaver screen1and the annular wall2to slide and reset. In the present embodiment, the elastic reset structure53may be a compression spring.

Example 2

Referring toFIG.5, a hair shaver may include the shaver head assembly according to Example 1, a housing6, and a motor7. The housing6may have a cylindrical structure, the shaver head seat5may be fixed at one end of the housing6, the motor7may be provided in the housing, and the output shaft and the blade holder3may be connected by a shaft connection structure8. In addition, a cover9may be provided, which can be fastened to the housing to cover the shaver head assembly.

Finally, it should be noted that: the above implementations are only used to illustrate the technical solutions of the present disclosure, but not to limit it. Although the present disclosure has been described in detail with reference to the foregoing implementations, those of ordinary skill in the art should understand: modifications can be still made, or equivalent replacements are made to some of the technical features to the technical solutions described in the foregoing embodiments. While these modifications or replacements do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions according to the embodiments of the present disclosure.