Electric rotary razor

Abstract

An electric rotary shaver comprising: a cartridge having a plurality of outer razor holes; and a plurality of outer razors, each outer razor mounted in each outer razor hole so as to be interposed between the outer razor and the inner razor drive shaft The inner razor is supported and moved in the axial direction and tilted in any desired direction, the drive shaft is pushed outward in the axial direction; the outer surface of the outer razor and the inner surface of the outer razor hole form a sliding contact, thereby supporting the outer razor to tilt in any desired direction in the outer razor hole; the outer razor is in sliding contact with the inner surface of the outer razor hole so that the outer razor can move axially and always remain in sliding contact with the inner surface of the outer razor hole; And the outer surface of the outer razor hole forms an outwardly projecting spherical surface shape, the inner surface of the outer razor hole includes a pair of opposing spherical surfaces at each end of the outer razor hole, and a cylindrical surface disposed between the opposing spherical surfaces. This electric rotary shaver has an improved fit of the outer blade to the skin.

Description

technical field [0001] The present invention relates to electric rotary shavers, and more particularly to a structure for supporting an outer shaver in a knife holder of an electric rotary razor. Background technique [0002] Figure 7 It is a three-dimensional view of the overall structure of an electric rotary shaver in the prior art. In the electric shaver 10 , the cutter head 20 is detachably mounted on the upper portion of the main body casing 12 of the shaver 10 . Three outer razors 22 are arranged in the cutter head 20 such that the centers of the outer razors are located at the vertices of an equilateral triangle. A plurality of slits for introducing beards are formed on the outer cutter 22 in the radial direction. Also, in each outer razor 22, a circular outer hair introduction region V and a circular inner hair introduction region W are formed in a concentric arrangement, and the boundary between the outer hair introduction region V and the inner hair introductio...

AI Technical Summary

Problems solved by technology

However, the gap between the outer razor hole 44 and the outer razor 22 increases to a larger value, making it difficult to set the center position of the outer razor 22 due to looseness between the outer razor hole 44 and the outer razor 22.

Moreover, it also destabilizes the rotation of the inner razor 26

In addition, the outer cutter 22 tends to move considerably in the outer cutter hole 44, reducing shaving efficiency.

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