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Inner blade for electric razor

A technology of electric razors and knives, applied in the field of internal knives, which can solve the problems of incomplete cutting, shortening of the beard H, and tilting of the front part of the beard H, etc.

Active Publication Date: 2009-07-22
MATSUSHITA ELECTRIC WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if Figure 11C As shown, there is a problem that the front end portion of the cut beard H in the pushed down state becomes inclined, and the cut beard H becomes shorter without being completely cut.

Method used

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  • Inner blade for electric razor
  • Inner blade for electric razor
  • Inner blade for electric razor

Examples

Experimental program
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Embodiment Construction

[0023] An inner cutter for an electric shaver according to an embodiment of the present invention will be described with reference to the drawings. Such as figure 1 As shown, the inner cutter 5 of the electric shaver of the present invention is suitable for a reciprocating electric shaver 1 and has a plurality of blades 30 arranged in parallel on a base 20 made of synthetic resin. The reciprocating electric shaver 1 includes a drive mechanism 2 including a motor and the like housed in a housing 4, and a rechargeable battery 3, for example. The base 20 of the inner cutter 5 is coupled to the drive mechanism 2 , whereby the inner cutter 5 is kept in a state protruding outward from the upper end of the housing 4 . The outer cutter 10 has a plurality of beard introduction holes 11 formed substantially uniformly, and the outer cutter 10 is attached to the upper end of the housing 4 . The inner cutter 5 is driven by the driving mechanism 2 to reciprocate in parallel with the oute...

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PUM

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Abstract

An inner blade (5) for an electric razor has blades (30) supported by a base (20). When the inner blade (5) is reciprocated in parallel with the outer blade (10) having whisker introducing holes (11), whiskers are cut between the inner blade (5) and an outer blade (10). The blades (30) are arranged in parallel with each other, and a pair of blade edges (32) is symmetrically arranged on both sides of the upper part (31) of each blade (30). The blade edges (32) are defined by the upper surface (31) and scoop surfaces (33) tilted relative to the upper surface (31). The tip of each blade edge (32) is rounded to a shape with a curvature radius R (mum) and is formed such that the curvature radius R satisfies the relationship of R<= -0.2 alpha + 1.1 (mum), with alpha being the angle in degree of a scoop surface (33) relative to the upper surface (31).

Description

technical field [0001] The present invention relates to an inner cutter for an electric shaver, and more particularly, to an inner cutter having a plurality of parallel-arranged blades used in a reciprocating electric shaver. Background technique [0002] The cutting head of the electric shaver includes an outer cutter formed with a plurality of beard introduction holes and an inner cutter with a plurality of blades, the inner cutter is connected to a driving source, and is reciprocally driven relative to the outer cutter. [0003] For example, if Figure 11A and Figure 11B As shown, the blade 30 used in the conventional inner cutter described in JP-A-6-142347 has a blade edge 32 at a predetermined angle for undercutting on the side surface near the upper end. When cutting off the beard, the beard H introduced from the beard introduction hole 11 formed on the outer cutter 10 is clamped between the edge of the knife edge of the outer cutter 10 and the edge of the knife edge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26B19/04
CPCB26B19/04B26B19/00B26B19/02
Inventor 佐藤正显小森俊介岩崎重左工门柴武志
Owner MATSUSHITA ELECTRIC WORKS LTD