JPH0728960B2 - Safety razor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a safety razor in which a blade body is bent so as to form an upwardly convex arc shape.

[0002]

2. Description of the Related Art A safety razor in which a blade is attached to a main body so as to form an upwardly convex arcuate shape, and a guard member also has an arcuate shape is disclosed in Japanese Utility Model Publication No. 52-14153. It still exists as before.

[0003]

As described above, there has been a safety razor in which a blade has an arcuate shape as described above, but the guard member is a fixed member integrally molded with the main body. On the other hand, when the guard member is formed separately from the main body and is rotatably attached to the main body, the shaving can be performed more smoothly because the guard member rotates during use. Therefore,
It is conceivable that a slender cylindrical guard member is formed separately and is rotatably mounted. Then, the blade edge and the guard
The distance to the surface of the door member is large near the center and small near both ends and is not constant.

The angle formed by the tangent line drawn from the blade edge of the safety razor to the guard member and the blade surface is called the shaving angle. If this shaving angle is not constant over the entire length of the blade edge, the skin may be injured. . If the slender cylindrical guard member is attached to the arcuate blade as described above, the shaving angle is not constant, which is dangerous. Therefore, an object of the present invention is to provide a safety razor in which a blade member has an arc shape and a guard member is rotatably attached to the razor, and the shaving angle is constant.

[0005]

According to the structure of the present invention, a guard member having substantially the same length as the blade edge is provided in front of and below the blade edge of the blade body in parallel with the blade edge. In the safety razor, the blade body is attached to the main body so as to form an upward convex arc shape, the guard member has a spindle shape, and the side surface has a curvature in the longitudinal direction of the circular arc blade body. It is characterized in that it is formed to have almost the same curvature, and that this guard member is attached to the main body so as to be rotatable about an axis.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. The main body has a blade 1 (not shown) integrally formed on the upper end of the handle 1, and the surface of the blade has a circular arc shape protruding upward. Support portions 2 and 2 project forward from both ends of the blade base, and a journal shaft hole 9 is provided in the support portion 2. The guard member 3 is integrally formed of plastic, has a spindle shape, and is provided with journal shafts 4 and 4 at both ends. The journal shafts 4 and 4 are connected to the journal shaft holes of the main body, and the guard member 3 is attached to the main body so as to be rotatable about the axis. Further, the curvature of the arcuate generatrix of the guard member 3 is substantially equal to the curvature of the surface of the cutting edge described above, and thus the curvature of the blade 6 placed on the cutting edge. Further, if necessary, a large number of lines are engraved on the surface of the guard member 3 in the generatrix direction thereof. By doing so, the rotation of the guard member 3 in use becomes smooth.

Reference numeral 5 is a top plate, which has a function of fixedly pressing the blade body 6 placed on the blade base. The top plate 5 also has an arcuate shape with a curvature similar to that of the blade stand, and the main body and the top plate 5 are locked by the locking means provided between the inner surfaces of the side plates 7, 7 facing downward and the main body.
Are combined. More specifically, the side plates 7, 7
A locking projection is provided on the inner surface of the locking member, and the locking projection is locked in the locking hole provided on the side surface of the main body. The blade 6 is this top plate 5
It is inevitably bent into an arc shape because it is attached between the blade edge 8 and the blade base, and the blade edge 8 also forms an arc.

[0008]

The structure of the present invention is as described above, and the blade body 6 and its blade edge 8 are attached to the main body so as to form an upward convex arc shape, and the separate guard member 3 is provided. It is rotatably attached to the main body and has a spindle shape having substantially the same curvature as the blade body 6. Therefore, since the guard member 3 is rotatable and the shaving angle is constant over the entire length of the blade edge 8,
A safety razor having an arcuate blade can be used safely while keeping the shaving angle constant.

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a perspective view of a guard member.

[Explanation of symbols]

1 Handle 2 Support part 3 Guard member 4
Journal shaft 5 Top plate 6 Blade body 7 Side plate 8
Blade edge

Claims (1)

[Claims] 1. The front of the blade edge of the blade body and below the blade edge,
In a safety razor in which a guard member having substantially the same length as the blade edge is provided in parallel with the blade edge, the blade body is attached to the main body so as to form an upward convex arc, and the guard member is It has a spindle shape, the curvature of the side surface in the longitudinal direction is formed to be substantially equal to the curvature of the arcuate blade body, and the guard member is attached to the main body so as to be rotatable about the axis. A featured safety razor.