Blade unit for a safety razor

A razor and blade technology, applied in the field of safety razors, can solve the problem of hair sawing

Inactive Publication Date: 2011-10-12
亚历山大·塔拉索维奇·沃罗丁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the above design is that the smooth cutting edge of the blade only covers a small part of the surface of the hair being cut, and the method of mounting the blade at two fulcrums results in the angle of the cutting edge relative to the working surface being significantly changed when using a blunt Especially noticeable with a knife edge, causing the hair to be "sawed off" rather than sheared off

Method used

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  • Blade unit for a safety razor
  • Blade unit for a safety razor
  • Blade unit for a safety razor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The blade unit includes a plastic chuck seat 1 , a positioning groove 2 , a stopper 3 , a continuously curved blade 4 , a blade holder 5 , a support plate 6 , and a positioning spring 7 . The continuously curved blade 4 is mounted to the blade holder 5 by the support plate 6 holding the continuously curved blade 4 in the positioning grooves 2 of the two stoppers 3 and the positioning spring 7 pressing the continuously curved blade 4 to the blade holder 5. Plastic chuck seat 1. The blade 8 is attached to a "z" shaped base which has an edge 9 for securing to the holder 5 .

[0016] The shape of the curve of the blade is a portion of a circle whose radius is calculated by the following formula:

[0017] R usr =k·L,

[0018] Among them, R usr is the radius of the curve of the blade;

[0019] k is a proportionality factor, equal to 1 / 5;

[0020] L is the radius R usr The chord length of the curve.

[0021] The continuously curved blade reduces labor while cutting hai...

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PUM

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Abstract

A blade unit for a safety razor comprises a plurality of elongated blades (4) with a continuously curved cutting edge (8). The shape of the cutting edge (8) is defined according to the formula Rcur=k*L, where Rcur is the bending radius of the blade; k is a coefficient of proportionality ranging from 1 to 5; and L is the chord length of a curve with a radius of Rusr. The blades (4) have a third support point. This provides for easy and effective shaving.

Description

technical field [0001] The present invention relates to a safety razor having a blade unit having a plurality of blades with cutting edges. Background technique [0002] A known razor (cf. Russian Federation Patent No. 2336156, classification B26B 21 / 22, 2008) comprises a blade unit and a razor body with a recess. The blade unit includes: a plurality of long metal blades having cutting edges; and first and second plastic units. The smooth edges of these metal blades form the scraping surface. The metal blade has first and second longitudinal ends. The first and second longitudinal ends are mounted to the first and second plastic units respectively to form a single unit. Connect the ends of the metal blades to each other. Secure the blade unit to the aforementioned recess of the razor. [0003] The disadvantage of the above design is that a metal blade with longitudinal ends has only two fulcrums at its ends and the smooth edge of the metal blade cannot maintain the angl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26B21/22
CPCB26B21/227B26B21/565B26B21/28
Inventor 亚历山大·塔拉索维奇·沃罗丁塔拉斯·维塔利维奇·沃罗丁
Owner 亚历山大·塔拉索维奇·沃罗丁
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