CN113021427A

CN113021427A - Rotary type net film electric shaver

Info

Publication number: CN113021427A
Application number: CN201911353624.0A
Authority: CN
Inventors: 黄勇辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2021-06-25

Abstract

A rotary type net film electric shaver comprises an outer cutter and an inner cutter which is tightly attached to the bottom of the outer cutter and rotates around a rotation center below the outer cutter, wherein the outer cutter is formed by a thin plate material which is bent to be in an upward convex shape when viewed from the rotation center direction, the thin plate material is provided with a plurality of beard leading-in holes penetrating through the thin plate material in the plate thickness direction, the inner cutter is formed by bending the plate material and is in a cylindrical structure, the plate material is provided with a plurality of inner cutter blade holes penetrating through the thickness of the plate material, the inner cutter blade holes are formed by punching the plate material, and at least one side of the inner cutter blade holes is provided with an inner cutter blade.

Description

Rotary type net film electric shaver

1. Field of the invention

The invention relates to a rotary type net film electric shaver, in particular to an electric shaver with an outer cutter being a net film, namely the outer cutter is formed by bending a thin plate, an inner cutter is a rotary electric shaver, and the cutting edge of the inner cutter cuts beard hair passing through a beard leading-in hole of the outer cutter and a cutting edge hole of the inner cutter.

Background

There are two popular types of electric shavers known in the market, one of which is a rotary electric shaver having one or more shaving heads, each of which has an outer cutter, an inner cutter and a driving device for the inner cutter, the outer cutter has a plurality of hair-introduction holes, and when hair enters the hair-introduction holes, the hair is cut by the cutting edge of the inner cutter, thereby achieving the purpose of shaving. However, the rotary electric shaver has its own weak point, and the shaving area is not large because the beard introducing hole of the outer cutter is limited due to the structure of the rotary electric shaver. Moreover, the beard leading-in hole of the external cutter is not too shallow, i.e. the thickness of the external cutter plate where the beard leading-in hole is located is not too thin, so that the stubble of the beard after shaving is longer.

Another type is a reciprocating electric shaver, in which the outer cutter is composed of an outer cutter (especially a net-type outer cutter) and an inner cutter assembly, and the upper part of the inner cutter assembly is closely attached to the lower part of the outer cutter. The inner knife is driven by a motor to reciprocate through an eccentric shaft riveted on a motor shaft. The inner cutter assembly cuts off beard leading-in holes passing through the outer cutter. Though the number of beard leading-in holes is large, the number of the blades of the inner cutter is large, and the stubble of the beard is not long. But has the obvious defects that the noise of the reciprocating motion is large, the inner cutter combination is continuously positioned between acceleration and deceleration, and the energy consumption loss is large. And the cutting edge of the inner cutter is difficult to be made into a sharp cutting edge, which is not beneficial to cutting beard.

In another type of rotary cap electric shaver, the outer cutter is also a cap type outer cutter, and the inner cutter is a bar-shaped blade machined from a previous groove. The inner cutter of the electric shaver has high processing difficulty, particularly high processing cost, consumes more steel, and is difficult to process a sharp cutting edge on the cutting edge of the inner cutter. Such electric shavers are relatively deficient in terms of both cost or energy consumption, and shaving efficiency.

In view of the disadvantages of the electric shaver, the rotary type cap electric shaver of the invention has the advantages of more beard leading-in holes, more inner cutter cutting edges, no growth of beard stubble, high efficiency, low noise, stable motion and the like of the reciprocating type electric shaver.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an electric shaver which is provided with an outer cutter which is formed by a thin plate material and has more beard leading-in holes, an inner cutter cutting edge with a sharp cutting edge and an inner cutter which rotates. Meanwhile, the inner cutter has more blades, high efficiency, low noise, short beard stubble and stable movement.

In order to achieve the purpose, the invention adopts the following technical scheme:

The beard introducing holes penetrating through the thin plate material in the plate thickness direction on the outer cutter are rectangular narrow holes, and long sides of the rectangular narrow holes are not perpendicular to the rotation center.

The inner cutter is provided with more than two rows of inner cutter edge holes in the axial direction of the inner cutter axis, and at least one edge of each inner cutter edge hole is an inner cutter edge.

The cutting edge of the inner cutter is parallel to the axis of the inner cutter.

The included angle between the side surface of the inner cutter blade and the tangent line of the inner cutter cylindrical surface at the inner cutter blade is less than 90 degrees.

The side surface of the cutting edge of the inner cutter is of an arc-surface-shaped structure.

The size from the cutting edge of the inner cutter to the axis of the inner cutter is larger than the size from the cylindrical surface of the inner cutter plate to the axis of the inner cutter.

The inner cutter is formed by combining two plates, the plates are in a semicircular structure, a plurality of inner cutter blade holes penetrating through the thickness of the plates are formed in the semicircular plates, and at least one inner cutter blade is arranged in each inner cutter blade hole.

The inner cutter is characterized in that a right fixing frame and a left fixing frame are respectively clamped on two end faces of the inner cutter, a driving device which is detachably connected with a power source is arranged on the right fixing frame, and a cylindrical right shaft and a cylindrical left shaft are respectively arranged on the right fixing frame and the left fixing frame.

The cutting edge of the inner cutter is formed by removing materials after a plate is stamped by a stamping die.

Compared with the prior art, the invention has the beneficial effects that: the rotary type omentum electric shaver has the advantages of high efficiency, low noise, short stubble of beard and stable movement.

The invention is further described below with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a perspective view of a rotary foil electric shaver according to the present invention;

FIG. 2 is a cross-sectional view of a cartridge of a rotary-foil electric shaver according to the present invention;

FIG. 3 is a perspective view of an electric shaver having a rotary-cap electric shaver head according to the present invention;

FIG. 4 is a cross-sectional view of a cartridge having two inner cutter blades in a single inner cutter edge hole of an inner cutter of a rotary-web electric shaver according to the present invention;

FIG. 5 is a cross-sectional view of an inner cutter of a rotary type cap electric shaver according to the present invention, wherein the side surface of the cutting edge of the inner cutter is in an arc-shaped structure;

FIG. 6 is a perspective view of the inner blade of the rotary type cap film electric shaver according to the present invention, wherein the dimension from the blade edge of the inner blade to the axis of the inner blade is larger than the dimension from the cylindrical surface of the inner blade to the axis of the inner blade;

FIG. 7 is a cross-sectional view of the inner blade of the rotary type cap electric shaver according to the present invention, wherein the dimension from the blade edge of the inner blade to the axis of the inner blade is larger than the dimension from the cylindrical surface of the inner blade to the axis of the inner blade;

FIG. 8 is a perspective view of an outer cutter of the rotary type cap electric shaver according to the present invention, wherein the beard inlet hole of the outer cutter is a rectangular narrow hole;

FIG. 9 is a perspective view of the inner blade of the rotary type foil electric shaver according to the present invention, which is formed by combining two plates;

description of the reference numerals

1 inner knife 11 inner knife edge hole 12 inner knife edge

13 arc-shaped side surface 14 inner cutter plate cylindrical surface 2 outer cutter

21 beard leading-in hole 22 outer cutter bottom 23 outer cutter fixing strip

3 driving device for detachable connection of right shaft 32 of right fixing frame 31

4 left fixing frame 41, left shaft 5 and external tool rest

6 electric shaver with rotary type omentum electric shaver head

a included angle between the side surface of the inner cutter blade and the tangent line of the inner cutter blade on the inner cutter cylindrical surface

b the dimension from the edge of the inner cutter to the axis of the inner cutter

c size from cylindrical surface of inner cutter plate to axle center of inner cutter

d center of rotation

Detailed Description

In order to more fully understand the technical content of the present invention, the technical solution of the present invention will be further described and explained below with reference to the specific embodiments and the drawings (the drawings only schematically show the structure of the present invention, and the shape, size, and ratio of the drawings are different from those of the actual application), but not limited thereto.

Referring to fig. 1 to 2, a cutter head of a rotary type cap electric shaver according to the present invention is shown in a perspective view and a sectional view, in which an upper portion of an inner cutter is closely attached to a bottom portion of an outer cutter, and the inner cutter rotates around a rotation center. The outer cutter is formed by bending a thin plate material which is in an upward convex shape when viewed from the direction of a rotation center, the thin plate material is provided with a plurality of beard leading-in holes penetrating through the thin plate material in the plate thickness direction, the inner cutter is formed by bending the thin plate material and is in a cylindrical structure, the thin plate material is provided with a plurality of inner cutter blade holes penetrating through the thickness of the thin plate material, the inner cutter blade holes are formed by punching the thin plate material, and at least one side of the inner cutter blade holes is provided with an inner cutter blade. When a beard passes through the beard leading-in hole of the outer cutter and the blade hole of the inner cutter, the beard is cut off by the blade of the inner cutter which rotates. The inner cutter edge hole is punched and post-processed by a plate through a punching die, the punching process comprises bending, stretching and the like, heat treatment is carried out according to needs after the punching process, then materials are removed, and then the inner cutter edge hole is bent and formed on the punching die. The stamping die is high in efficiency. The rotary motion of the cutter head is more stable and quiet. More than two rows of inner cutter blade holes are arranged in the axial direction of the cutter shaft center, and the inner cutter blade holes in the drawing are arranged in order, so that the inner cutter blade holes are not limited in practical application.

The two end faces of the inner cutter are respectively clamped with a right fixing frame and a left fixing frame, the right fixing frame is provided with a driving device which is detachably connected with a power source, and the right fixing frame and the left fixing frame are respectively provided with a cylindrical right shaft and a cylindrical left shaft. The right fixing frame and the left fixing frame clamped by the inner cutter are simultaneously used as rotating shafts of the inner cutter, and the right fixing frame or the left fixing frame can be arranged into a structure capable of being connected in a separable mode.

Further, as shown in the cross-sectional views of fig. 4 and 5, there may be two inner knife edges in each inner knife edge hole, and there are two inner knife edges in each inner knife edge hole in the quadrilateral shape as shown in this embodiment. Are respectively suitable for forward and reverse rotation. Further, any side of the inner cutter edge hole which is not perpendicular to the rotation center may be formed as the inner cutter edge.

Furthermore, as shown in fig. 6 and 7, the dimension from the cutting edge of the inner knife to the axis of the inner knife is larger than the dimension from the cylindrical surface of the inner knife plate to the axis of the inner knife, and the moving contact area between the inner knife and the outer knife is smaller, so that the friction force is reduced.

Further, as shown in the perspective view of the outer blade of fig. 8, the beard-introducing hole of the outer blade is formed as a rectangular narrow hole, which is generally perpendicular to the rotation center d or inclined at a small angle, and the length of the narrow side is 0.2-0.5mm, so that the long beard can be more easily introduced. Further, the beard introduction hole may be provided in a deformed shape.

Further, as shown in the perspective exploded view of fig. 9, the inner blade is composed of two or more plates. Two or more than two plates are respectively clamped with a right fixing frame and a left fixing frame, and the right fixing frame and the left fixing frame can be arranged to be in separable connection.

In conclusion, compared with the prior art, the invention has the beneficial effects that: the rotary type omentum electric shaver has the advantages of more beard leading-in holes, more inner cutter cutting edges, no growth of stubble, high efficiency, low noise and stable motion of the rotary type electric shaver, and is suitable for the reciprocating type electric shaver.

The above description is only for the purpose of illustrating the technical content of the present invention by way of example, so as to facilitate the reader's understanding, but does not represent that the embodiments of the present invention are limited thereto. The protection scope of the invention is subject to the claims.

Claims

1. A rotary type omentum electric shaver comprises an outer cutter and an inner cutter which is arranged below the outer cutter and clings to the bottom of the outer cutter to rotate around a rotating center,

characterized in that the outer blade is formed of a thin plate material bent in an upwardly convex shape as viewed from the rotational center direction, the thin plate material having a plurality of beard introduction holes penetrating the thin plate material in the plate thickness direction,

the inner cutter is formed by bending a plate and is of a cylindrical structure, the plate is provided with a plurality of inner cutter edge holes penetrating through the thickness of the plate, the inner cutter edge holes are formed by punching the plate, and at least one edge of each inner cutter edge hole is an inner cutter edge.

2. The rotary type cap electric shaver according to claim 1, wherein the plurality of beard introduction holes penetrating the thin plate member in the plate thickness direction of the outer cutter are rectangular narrow holes whose long sides are not perpendicular to the rotation center.

3. The rotary-type cap electric shaver according to claim 1, wherein the inner cutter has two or more rows of inner cutter edge holes in the axial direction of the inner cutter axis, and at least one of the inner cutter edge holes is an inner cutter edge.

4. The rotary web electric shaver of claim 1 or 3 wherein the inner cutter cutting edge is parallel to the inner cutter axis.

5. A rotary foil electric shaver as claimed in claim 1 or 3, wherein the angle between the side surface of the inner cutter cutting edge and the tangent to the cylindrical inner cutter surface at the inner cutter cutting edge is less than 90 °.

6. The rotary web electric shaver as claimed in claim 1 or 3, wherein the inner cutter edge side surface is of an arc-surface shape.

7. The rotary type cap electric shaver according to claim 1 or 3, wherein the dimension from the cutting edge of the inner cutter to the axis of the inner cutter is larger than the dimension from the cylindrical surface of the inner cutter plate to the axis of the inner cutter.

8. The rotary type cap electric shaver according to any one of claims 1, 3, 4, 5, 6 and 7, wherein the inner cutter is formed by combining two plates, the plates are semi-circular shaped, the semi-circular shaped plates are provided with a plurality of inner cutter edge holes penetrating through the thickness of the plates, and each inner cutter edge hole is provided with at least one inner cutter edge.

9. The rotary type cap electric shaver according to claim 1 or 8, wherein a right fixing frame and a left fixing frame are respectively fastened to two end faces of the inner cutter, the right fixing frame is provided with a driving device detachably connected with the power source, and the right fixing frame and the left fixing frame are respectively provided with a cylindrical right shaft and a cylindrical left shaft.

10. The rotary web electric shaver as claimed in claim 1 or 8, wherein the inner cutter blade is formed by removing material from a plate material which is punched by a punching die.