JPS6159748B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a rotary electric razor.

In conventional electric razors of this type, the inner cutter 2 is pushed up at one point by an inner cutter push-up member 4, as shown in FIG. That is, in the figure, 1 is an outer cutter, 2 is an inner cutter that rotates in contact with the inside of the outer cutter, and 3 is an inner cutter that rotates in contact with the inside of the outer cutter.
Reference numeral 4 indicates an outer cutter frame, 4 indicates an inner cutter push-up member, 5 indicates a push-up spring, and 6 indicates an inner cutter drive member. In this structure, the inner cutter may separate from the outer cutter due to the introduction of whiskers. Therefore, in places where beards are not introduced,
Because it is in pressure contact with the outer cutter, the inner cutter tilts and collides with the outer cutter when all the inner cutters try to come into contact, causing a sudden increase in load. As a result, the inner cutter cannot rotate smoothly, resulting in a disadvantage that it causes a decrease in cutting quality. The present invention was proposed in order to improve the above-mentioned drawbacks, and aims to provide an electric razor in which the inner cutter can be supported in a two-dimensional manner by pushing the inner cutter upward at at least three points. It is something.

Next, the present invention will be explained with reference to the drawings.

FIG. 2A shows a top view, and FIG. 2B shows a longitudinal sectional view. In the figure, reference numeral 11 denotes an outer cutter, which is fixed to an outer cutter frame 12, and this outer cutter frame is attached to a body 13 of the electric razor. Reference numeral 14 denotes an inner cutter whose blade portion rotates in contact with the inner surface of the outer cutter 11. Reference numeral 15 denotes a main body of the inner cutter, and a portion of this main body is provided with three drive transmission protrusions 16 projecting downward. The protrusion 16 is fitted into a recess above the support arm 18 of the push-up member 17 . This push-up member 17 has three support arms 18 formed at equal intervals above a cylindrical main body 19 and at equal distances from the center of rotation of the inner cutter, and the lower part of the main body 19 has a step with a small outer diameter. A push-up spring 2 is formed on the outside of this small diameter portion 20.
1 is engaged. Further, the lower part of this push-up spring 21 is connected to the receiving part 2 attached to the rotating shaft 23 of the motor 22.
It touches 4. A disk-shaped body 25 is formed on the upper part of the rotating shaft 23, and three windows are formed in the disk-shaped body 25, and the support arm 18 extends upward through the windows. 26 indicates the center axis of rotation of the inner cutter.

FIG. 3 shows a perspective view of the inner cutter, in which the cutter is formed above the main body 15, a hole 27 is formed in the center, and three drive transmission protrusions 16 protrude downward from the lower surface. The drive transmission protrusion is inserted into a recess above the support arm 18 of the push-up member 17 .

FIGS. 4 to 7 show other embodiments of the push-up member for the inner cutter, in which A shows a top view and B shows a longitudinal cross-sectional view, respectively.

In FIG. 4, three arc-shaped leaf springs 31 are molded around a central axis 32, and the molded portion 3
3, and push-up pieces 34 are molded and integrally formed at the tips of the leaf springs 31, respectively.

In FIG. 5, three arc-shaped leaf springs 31 are molded around a central axis 32, and the molded part 3
3, and a ring-shaped portion 35 is integrally formed around the leaf spring 31 with a molded portion 36.

In FIG. 6, a Y-shaped leaf spring 38 is engaged with the shaft 37, and bent portions 39 are formed at the tips of the leaf springs 38, respectively. Further, the leaf spring 38 is pushed upward by a helical spring 40. 41 indicates a retaining ring to prevent the leaf spring from slipping out.

In FIG. 7, a disc-shaped body 43 is attached to the upper part of the shaft 42
are integrally formed, three windows are formed in the disk-shaped body 43 at equal intervals from the center, and a convex push-up piece 44 is inserted into the window, and the push-up piece 44 The lower surface of is pushed up by a push-up spring 45.

In the present invention, as described above, the integrally formed inner cutter is pressed against the outer cutter by the push-up part at at least three locations equally spaced as a whole and at equal distances from the center of rotation of the inner cutter. Therefore, even if the hair may get between the inner cutter and the outer cutter, the inner cutter does not tilt to an extreme degree and can provide smooth rotation.

In the above embodiment, the inner cutter was pressed upward at three points by the push-up member, but it is also possible to press the inner cutter at three or more points.

[Brief explanation of the drawing]

Fig. 1 shows a conventional electric razor, and Fig. 2 shows an embodiment of the electric razor of the present invention. 7 to 7 show other embodiments of the push-up member, in which A shows a top view and B shows a longitudinal sectional view. 11... Outer blade, 12... Outer blade frame, 13...
...Body, 14...Inner blade, 15...Main body, 16...
...Drive transmission protrusion, 17 ...Push-up member, 18...
Support arm, 19...Main body, 20...Small diameter portion, 21...
... Push-up spring, 22 ... Motor, 23 ... Rotating shaft,
24... Receiving part, 25... Disc shaped body, 26... Inner blade rotation center axis, 27... Hole, 31... Leaf spring, 32
... Central axis, 33 ... Mold part, 34 ... Push-up piece, 35 ... Ring-shaped part, 36 ... Mold part, 37
...shaft, 38 ... leaf spring, 39 ... bending part, 40
... Spring, 41 ... Retaining ring, 42 ...
Shaft, 43... Disc-shaped body, 44... Push-up piece, 45...
...Push-up spring.

Claims (1)

[Claims] 1. In an electric razor provided with an inner cutter that rotates while contacting the inner surface of the outer cutter inside the outer cutter, the inner cutter main body is arranged at at least three or more locations at equal intervals,
A rotary electric razor comprising a push-up member that pushes up the inner cutter toward the outer cutter and applies rotational force to the inner cutter at a point at an equal distance from the center of rotation of the inner cutter.