Cutting unit of electric shaver

Abstract

The utility model relates to an electric shaver cutting unit which comprises a net cover, the net cover comprises a supporting frame, an annular inner blade net and an annular outer blade net, the annular outer blade net comprises a plurality of outer blades and a plurality of outer connecting pieces, the outer blades and the outer connecting pieces extend outwards from the outer periphery of the annular inner blade net in the radial direction and are arranged at intervals, and the outer ends of the outer connecting pieces are connected with the supporting frame. Outer side channels allowing hair to enter are arranged between the outer ends of the outer blades and the supporting frame in a spaced mode, the corresponding side edges of every two adjacent outer blades are parallel, and the side edges, corresponding to the outer connecting pieces, of every two adjacent outer blades are parallel. A U-shaped knife edge is formed between every two adjacent outer blades on the annular outer knife net, a U-shaped knife edge is also formed between every two adjacent outer blades and the corresponding outer connecting piece, gaps formed in the U-shaped knife edges are not too large, the thickness of the outer blades and the thickness of the outer connecting pieces do not need to be increased, and therefore the skin of a user is prevented from being clamped into the gaps. The thickness of the outer blade and the thickness of the outer connecting piece are both small, hair can be directly trimmed to be very short during shaving, and the shaving efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of shavers, in particular to a cutting unit of an electric shaver. Background Art

[0002] The blade assembly of a traditional electric shaver includes a mesh cover and a blade holder, wherein the mesh cover includes a support ring and an outer blade net and an inner blade net, a support sheet is provided on the inner side of the inner blade net, an outer blade is provided on the blade holder corresponding to the outer blade net position, and an inner blade is provided on the blade holder corresponding to the inner blade net position, the outer blade and the outer blade net can cooperate with each other for cutting, the inner blade and the inner blade net can cooperate with each other for cutting, the inner circle of the outer blade net is connected to the inner blade net as a whole, and the outer circle of the outer blade net is connected to the support ring as a whole. When the blade assembly of this structure is used, the overlong hair is easily pushed against the skin, and it is difficult to introduce it into the mesh cover, so it is easy to get stuck and pulled, causing pain.

[0003] In order to facilitate the introduction of longer hair into the net cover, a Chinese utility model patent with application number 202021218707.7 discloses an electric shaver net cover, which includes a blade net and a hollow base. The blade net is located at the upper end of the base. The blade net includes an inner blade net and an outer blade net. The inner blade net is arranged in a circular shape. The inner blade net is provided with slots for hair to pass through. Several slots are arranged at intervals along the inner blade net. The outer blade net is arranged along the outer periphery of the inner blade net. The outer edge of the inner blade net and the outer blade net are connected. The inner edge of the net is connected to form a whole, a connecting piece is provided between the outer knife net and the base, a plurality of connecting pieces are provided along the circumference of the outer knife net, a sawtooth is provided on the outer edge of the outer knife net, the outer end of the sawtooth is arranged in an arc shape, a plurality of sawtooths are distributed at intervals along the circumference of the outer knife net, each sawtooth is arranged straight and located on the same plane, a groove is provided on the base between two adjacent connecting pieces, the groove and the sawtooth are combined to form a channel for hair to enter, the thickness of the sawtooth is greater than the thickness of the inner knife net, and the thickness of the sawtooth is 0.2-0.3mm.

[0004] However, in the above technical solution, the saw teeth arranged on the outer edge of the outer blade net are roughly triangular, a V-shaped groove is formed between two adjacent saw teeth, and the outer ends of two adjacent saw teeth are spaced at a large distance. In order to prevent the skin from getting stuck in the gap between the two saw teeth and being cut by the outer blade corresponding to the outer blade net, the saw teeth need to be set to a large thickness, such as 0.2-0.3mm. As a result, the outer blade net can only roughly cut long beards, and the short beards after rough cutting are finely cut by the inner blade net, and the overall shaving efficiency is not high. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an electric shaver cutting unit with a small blade mesh thickness and high shaving efficiency in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: an electric shaver cutting unit, comprising a blade holder and a net cover above the blade holder, the blade holder comprising an inner ring blade and an outer ring blade which are both rotatable and arranged concentrically, the net cover comprising a support frame and an annular inner blade net and an annular outer blade net which are both arranged on the support frame, the annular inner blade net and the annular outer blade net being arranged concentrically, the annular outer blade net comprising a plurality of outer blades extending radially outward from the outer periphery of the annular inner blade net and arranged at intervals, and a plurality of outer connecting plates extending radially outward from the outer periphery of the annular inner blade net and arranged at intervals, the outer end of the outer connecting plate being connected to the support frame, the outer end of the outer blade being spaced apart from the support frame by an outer channel for hair to enter, the corresponding side edges of two adjacent outer blades being parallel to each other, and the corresponding side edges of adjacent outer blades and the outer connecting plate being parallel to each other. The corresponding sides of two adjacent outer blades are parallel to each other, that is, along the extension direction of the outer blades, the width of the interval between the two adjacent outer blades is always consistent, so that a more appropriate width can be set, which will neither hinder the entry of hair due to a small width, nor cause the user's skin to be caught due to a large width, resulting in the risk of cuts.

[0007] Preferably, the gap widths between all adjacent two outer blades are equal, the gap widths between all adjacent outer connecting plates and the outer blades are equal; and the gap width between two adjacent outer blades is equal to the gap width between adjacent outer connecting plates and the outer blades.

[0008] In order to reduce the razor hair stuck and pulling and improve the comfort of use, the outer end of the outer blade is in a convex arc shape, and the connection between the roots of the adjacent outer blades is in a concave arc shape. The connection between the roots of the adjacent outer blades and the roots of the outer connecting piece is also in a concave arc shape.

[0009] Preferably, the outer connecting plates are arranged at equal intervals along the circumference of the annular inner blade net, and an equal number of outer blades are arranged in the gaps between adjacent outer connecting plates. In other embodiments, the intervals between adjacent outer connecting plates may also be unequal, and the number of outer blades arranged in the gaps between adjacent outer connecting plates may also be unequal.

[0010] In order to increase the space available for hair to enter, the outer connecting piece includes a horizontal portion extending radially outward from the outer periphery of the annular inner blade net and a vertical portion extending downward from the end of the horizontal portion, and the end of the vertical portion is connected to the support frame.

[0011] In order to increase the connection between the annular outer blade net and the support frame, the width of the horizontal portion exceeding the outer blade portion gradually increases radially outward, and the width of the vertical portion is the same as the width of the end of the horizontal portion.

[0012] In order to increase the overall strength of the annular outer knife net, the annular outer knife net also includes an outer ring plate connected to the outer periphery of the annular inner knife net, and the outer blades and the outer connecting plate both extend radially outward from the outer ring plate.

[0013] In order to increase the working area of ​​the shaver and thus improve the shaving efficiency, the annular inner blade net comprises a central fixing plate and a plurality of inner blades extending radially inward from the inner circumference of the outer ring plate and arranged at intervals, and a plurality of inner connecting plates extending radially inward from the inner circumference of the outer ring plate and arranged at intervals. The central fixing plate is located at the center of the annular inner blade net, the inner end of the inner connecting plate is connected to the central fixing plate, an inner channel for hair to enter is provided between the inner end of the inner blade and the central fixing plate, the corresponding side edges of two adjacent inner blades are parallel to each other, and the corresponding side edges of adjacent inner blades and the inner connecting plate are parallel to each other.

[0014] Preferably, the periphery of the central fixing piece extends upward with a ring wall, and the lower surface of the inner end of the inner connecting piece is connected to the ring wall. When the user uses it, the above structure allows the hair located at the central fixing piece to smoothly enter the inner channel from the inner side of the inner channel through translation and thus be further cut.

[0015] In order to increase the overall strength of the annular inner knife net, the annular inner knife net also includes an inner ring plate connected to the outer peripheral edge of the outer ring plate, and the inner blades and the inner connecting plate both extend radially inward from the inner ring plate.

[0016] In order to increase the overall strength of the shaver, an annular recessed portion is provided between the outer ring piece and the inner ring piece, and the annular recessed portion is recessed downward from the position between the outer ring piece and the inner ring piece to form an annular groove.

[0017] Compared with the prior art, the advantages of the present invention are that the corresponding sides of two adjacent outer blades on the annular outer blade net are parallel to each other, and the corresponding sides of the adjacent outer blades and the outer connecting plate are parallel to each other; that is, a U-shaped blade edge is formed between two adjacent outer blades on the annular outer blade net, and a U-shaped blade edge is also formed between the adjacent outer blades and the outer connecting plate. The gap formed inside the U-shaped blade edge will not be too large, so there is no need to increase the thickness of the outer blades and the outer connecting plate to prevent the user's skin from being stuck in the gap. The thickness of the outer blade and the outer connecting plate used in the present application are both relatively small, so the hair can be directly trimmed to a very short length when shaving, and the shaving efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the cutting unit of the electric shaver in the embodiment of the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle grille;

[0020] Figure 3 for Figure 2 Cross-section of the center grille. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 3 The figure shows a preferred embodiment of the electric shaver cutting unit of the utility model. The electric shaver cutting unit comprises a blade holder 1 and a net cover 2 covering the blade holder 1, the blade holder 1 comprises a rotatable inner ring blade 11 and an outer ring blade 12 arranged concentrically, the net cover 2 comprises a support frame 21 and an annular inner blade net 22 and an annular outer blade net 23 arranged on the support frame 21, the annular inner blade net 22 and the annular outer blade net 23 are arranged concentrically, the inner ring blade 11 can rotate relative to the annular inner blade net 22 to achieve cutting, and the outer ring blade 12 can rotate relative to the annular outer blade net 23 to achieve cutting; Figure 1 shown.

[0023] The annular outer knife net 23 includes an outer ring plate 230, which is connected to the outer periphery of the annular inner knife net 22. A plurality of outer blades 231 are radially extended outward from the outer periphery of the outer ring plate 230 and are arranged at intervals. At the same time, a plurality of outer connecting plates 232 are radially extended outward from the outer periphery of the outer ring plate 230 and are arranged at intervals. The extension length of the outer blade 231 is smaller than that of the outer connecting plate 232. Specifically, the outer end of the outer connecting plate 232 is connected to the support frame 21, and an outer channel 23a for hair to enter is spaced between the outer end of the outer blade 231 and the support frame 21. Figure 2 The number of the outer blades 231 and the outer connecting pieces 232 is only one of the cases. During production, the number of the outer blades 231 and the outer connecting pieces 232 can be less than or more than the number according to actual needs. Figure 2 A medium number of outer blades 231 and outer connecting pieces 232.

[0024] Specifically, the outer connecting pieces 232 are arranged at equal intervals along the circumference of the outer ring piece 230, and an equal number of outer blades 231 are arranged in the gaps between adjacent outer connecting pieces 232, wherein the corresponding sides of two adjacent outer blades 231 are parallel to each other, and the corresponding sides of the adjacent outer blades 231 and the outer connecting piece 232 are parallel to each other. The corresponding sides of two adjacent outer blades are parallel to each other, and the corresponding sides of the adjacent outer blades 231 and the outer connecting piece 232 are parallel to each other, that is, the width of the interval between the two adjacent outer blades is always consistent, and the width of the interval between the adjacent outer blades 231 and the outer connecting piece 232 is always consistent, and then the above width can be set to a more appropriate width value, which will neither hinder the entry of hair due to too small a width nor get the user's skin stuck due to too large a width. A U-shaped blade edge is formed between two adjacent outer blades 231 on the annular outer blade net 23, and a U-shaped blade edge is also formed between the adjacent outer blades 231 and the outer connecting piece, and the width of the gaps formed inside the above U-shaped blade edges are all equal.

[0025] In this embodiment, the outer connecting piece 232 and the outer ring blade 12 can cooperate in cutting, and the gap width between adjacent outer blades 231 and the outer connecting piece 232 is the same as the gap width between two adjacent outer blades 231. At the same time, in order to reduce the razor hair stuck and pulling and thus improve the comfort of use, the outer end of the outer blade 231 is in an outward convex arc shape; the connection between the roots of two adjacent outer blades 231 is in an inward concave arc shape, and the connection between the roots of adjacent outer blades 231 and the roots of the outer connecting piece 232 is also in an inward concave arc shape.

[0026] In order to increase the space available for hair to enter, the outer connecting piece 232 includes a horizontal portion 2321 extending radially outward from the outer periphery of the outer ring piece 230 and a vertical portion 2322 extending downward from the end of the horizontal portion 2321, and the end of the vertical portion 2322 is connected to the support frame 21. In order to increase the connection between the annular outer blade net and the support frame, the width of the horizontal portion 2321 that exceeds the outer blade 231 gradually increases radially outward, and the width of the vertical portion 2322 is the same as the width of the end of the horizontal portion 2321.

[0027] In order to increase the working area of ​​the razor and improve the shaving efficiency, the annular inner blade net 22 is provided with a structure similar to the annular outer blade net 23. Specifically, the annular inner blade net 22 includes a central fixing plate 221 and an inner ring plate 220 connected to the outer periphery of the outer ring plate 230. The central fixing plate 221 is located at the center of the annular inner blade net 22, and a circle of annular wall 2211 extends upward from the periphery of the central fixing plate 221; a plurality of inner blades 222 are radially extended inwardly from the inner periphery of the inner ring plate 220 and are arranged at intervals; a plurality of inner connecting plates 223 are radially extended inwardly from the inner periphery of the inner ring plate 220 and are arranged at intervals; the lower surface of the inner end portion of the inner connecting plate 223 is connected to the annular wall 2211 on the central fixing plate 221; an inner channel 22a for hair to enter is provided between the inner end portion of the inner blade 222 and the central fixing plate 221; the corresponding side edges of two adjacent inner blades 222 are parallel to each other, and the corresponding side edges of adjacent inner blades 222 and the inner connecting plate 223 are parallel to each other. Figure 2 The number of inner blades 222 and inner connecting pieces 223 is only one of the cases. During production, the number of inner blades 222 and inner connecting pieces 223 may be less than or more than the number according to actual needs. Figure 2 A medium number of inner blades 222 and inner connecting pieces 223.

[0028] Similarly, in order to increase the connection between the annular inner blade net and the central fixing sheet 221, the width of the inner connecting sheet 223 that exceeds the inner blade 222 gradually increases along the radial inward direction. In order to reduce the razor hair stuck and pulling and thus improve the comfort of use, the inner end of the inner blade 222 is in a convex arc shape; the connection between the roots of two adjacent inner blades 222 is in a concave arc shape, and the connection between the roots of adjacent inner blades 222 and the roots of the inner connecting sheet 223 is also in a concave arc shape.

[0029] In order to increase the overall strength of the razor, an annular concave portion 24 is provided between the outer ring piece 230 and the inner ring piece 220. The annular concave portion 24 is bent downward from the inner periphery of the outer ring piece 230 to form a first bent portion, and then bent upward to form a second bent portion, and the end of the second bent portion is connected to the outer periphery of the inner ring piece 220. The first bent portion limits the outer ring blade 12 on the blade holder 1, and the second bent portion limits the inner ring blade 11 on the blade holder 1.

Claims

1. An electric shaver cutting unit, comprising a blade holder (1) and a net cover (2) covering the blade holder (1), wherein the blade holder (1) comprises an inner ring blade (11) and an outer ring blade (12) which are arranged concentrically and are both rotatable, and the net cover (2) comprises a support frame (21) and an annular inner blade net (22) and an annular outer blade net (23) which are both arranged on the support frame (21), wherein the annular inner blade net (22) and the annular outer blade net (23) are arranged concentrically, and the annular outer blade net (23) is arranged concentrically. The net (23) comprises a plurality of outer blades (231) extending radially outward from the outer periphery of the annular inner blade net (22) and arranged at intervals, and a plurality of outer connecting pieces (232) extending radially outward from the outer periphery of the annular inner blade net (22) and arranged at intervals, the outer ends of the outer connecting pieces (232) being connected to the support frame (21), and an outer channel (23a) for hair to enter is spaced between the outer ends of the outer blades (231) and the support frame (21), and is characterized in that: The corresponding side edges of two adjacent outer blades (231) are parallel to each other, and the corresponding side edges of adjacent outer blades (231) and the outer connecting piece (232) are parallel to each other.

2. The electric shaver cutting unit according to claim 1, characterized in that: The outer end of the outer blade (231) is in the shape of an outwardly convex arc; and the connection between the roots of adjacent outer blades (231) is in the shape of an inwardly concave arc.

3. The electric shaver cutting unit according to claim 1, characterized in that: The outer connecting plates (232) are arranged at equal intervals along the circumference of the annular inner blade net (22), and an equal number of outer blades (231) are arranged in the gaps between adjacent outer connecting plates (232).

4. The electric shaver cutting unit according to claim 1, characterized in that: The outer connecting plate (232) comprises a horizontal portion (2321) extending radially outward from the outer periphery of the annular inner blade net (22) and a vertical portion (2322) extending downward from the end of the horizontal portion (2321), and the end of the vertical portion (2322) is connected to the support frame (21).

5. The electric shaver cutting unit according to claim 4, characterized in that: Along the radial outward direction, the width of the horizontal portion (2321) beyond the outer blade (231) gradually increases, and the width of the vertical portion (2322) is the same as the width of the end of the horizontal portion (2321).

6. The electric shaver cutting unit according to any one of claims 1 to 5, characterized in that: The annular outer knife net (23) further comprises an outer ring sheet (230) connected to the outer periphery of the annular inner knife net (22), and the outer blade (231) and the outer connecting sheet (232) both extend radially outward from the outer ring sheet (230).

7. The electric shaver cutting unit according to claim 6, characterized in that: The annular inner knife net (22) comprises a central fixing plate (221), a plurality of inner blades (222) extending radially inward from the inner circumference of an outer ring plate (230) and arranged at intervals, and a plurality of inner connecting plates (223) extending radially inward from the inner circumference of the outer ring plate (230) and arranged at intervals, wherein the central fixing plate (221) is located at the center of the annular inner knife net (22), the inner end of the inner connecting plate (223) is connected to the central fixing plate (221), an inner channel (22a) for hair to enter is spaced between the inner end of the inner blade (222) and the central fixing plate (221), the corresponding side edges of two adjacent inner blades (222) are parallel to each other, and the corresponding side edges of the adjacent inner blades (222) and the inner connecting plate (223) are parallel to each other.

8. The electric shaver cutting unit according to claim 7, characterized in that: A ring wall (2211) extends upward from the periphery of the central fixing plate (221), and the lower surface of the inner end of the inner connecting plate (223) is connected to the ring wall (2211).

9. The electric shaver cutting unit according to claim 8, characterized in that: The annular inner blade net (22) further comprises an inner ring sheet (220) connected to the outer peripheral edge of the outer ring sheet (230), and the inner blade (222) and the inner connecting sheet (223) both extend radially inward from the inner ring sheet (220).

10. The electric shaver cutting unit according to claim 9, characterized in that: An annular recessed portion (24) is provided between the outer ring piece (230) and the inner ring piece (220).

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