JPS592787A - Blade protecting cap of electric shaver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shaver blade protection cap, and an object thereof is to provide an electric shaver blade protection cap that is easy to attach and detach.

As shown in Fig. 8, the blade protection cap of a conventional electric razor is molded from one type of synthetic resin material, and in order to make it easy to attach and remove the blade protection cap (A), the blade protection cap (A) has a knob (
The blade protection cap (B) is made into an easy-to-pick shape, and the direction of the knob (B) is indicated by an arrow (/arm).
In (a), emphasis is placed on the longevity of the retaining force, but neglect is given to the ability of the fingers to attach and remove the blade, resulting in the problem that the fingers slip from the blade protection cap (a) and are difficult to attach and detach.

The present invention has been made in view of the above problems, and will be described below with reference to the drawings showing embodiments of the present invention. 1st
In the figures and FIG. 8, the electric razor 1 is composed of a grip part 2 that houses a drive part (not shown), and a blade part 8 that is detachably attached to the grip part 2. The blade portion 8 is composed of a dome-shaped outer blade 6 in which a plurality of blade holes 4 are formed, and an inner blade (not shown) that slides on the inner surface of the outer blade 5.

The blade protection cap 6 is made of a bottomed cylindrical body 7 with an open end at one end made of transparent polycarbonate resin with high wear resistance, and a thermoplastic material such as opaque rubber Pervrene, which has a higher shrinkage rate and coefficient of friction than the cylindrical body 7. The ring 8 is formed on the outer peripheral wall of the cylindrical body 7 by molding different materials, and is integrally formed into a dome shape. A pair of protrusions 9 are formed facing each other on the inner surface of the cylinder 7, and an uneven portion 1 is formed on the outer peripheral wall of the ring 8.
A pair of knob portions 11 having a diameter of 0 are formed.

W (,) connecting each protrusion 9 and each knob 11
It connects the IJ (b) and is perpendicular to the knob 11.
By pressing inward of the blade protection cap 6 (in the direction of arrow P), the end line of the cylinder body 7 is pushed outward by elastic force, and the engagement recess 12 of the outer blade 5 and the protrusion 9 are connected to each other. is disengaged, and the blade protection cap 6 is removed from the outer blade 5. In the molding of different materials, after forming the cylindrical body 7 with polycarbonate resin in the first molding, the ring 8 is formed with rubber in the second molding.
The ring 8, which has a large shrinkage rate, is firmly fixed to the cylindrical body 7.

Figures 4 and 6 show other embodiments of the electric shaver blade protection cap of the present invention.
Reference numeral 8 includes a dome-shaped bottomed cylinder 14 with an open end and a ring 15 made of rubber, which are integrally formed by molding of different materials. A pair of U-shaped first notches 16 are formed in the outer peripheral wall of the cylindrical body 14, and a thin elastic part 17 is left at the edge of the ring 15 to form the first notches 16. second consecutive
A notch 18 is formed, and the first notch 1
6 and the second notch 18 and the elastic portion 1
A pair of knobs 19 are rotatably supported by 7.

A protrusion 20 that engages with the engagement recess 12 of the outer cutter 5 is formed on the inner surface of the knob 19 . By pressing the knob 19 inward (in the direction of arrow P) of the blade protection cap 18, the knob 19 rotates around the elastic part 17 as shown in FIG. It is removed from the engagement recess 12. According to this embodiment, the protrusion 20 can be removed from the engagement recess 12 of the outer cutter 5 by pressing the knob 19, so that the blade protection cap can be easily removed.

In the embodiment, the blade protection cap covers the outer cutter and the inner cutter, but it may cover a part of the grip.

As described above, the electric shaver blade protection cap according to the present invention has an annular ring made of a material having a higher shrinkage rate and coefficient of friction than that of the cylindrical body, which is molded on the outer peripheral wall of the bottomed cylindrical body with one end open. Since the cylindrical body and the ring are formed into a body, there is an effect that the ring can be firmly fixed to the cylindrical body without using an adhesive. Since it is hard to slip, forming a knob on the ring part has the effect that the fingers are hard to slip and the blade protection cap can be easily attached and detached.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of the electric shaver and blade protection cap, Figure 2 is a sectional view of the electric shaver with the blade protection cap attached, Figure 8 is a bottom view of the blade protection cap, and Figure 4 is the book. FIG. 5 is a cross-sectional view of the blade protection cap in another embodiment of the invention; FIG. FIG. 7 is a cross-sectional view for explaining the operating state, and FIG. 8 is an external perspective view of a conventional blade protection cap. 6. Fist blade protection cap, 7. Cloudy cylinder body, 8. φ ring. Patent applicant Matsushita Electric Works Co., Ltd. Patent attorney Toshimaru Takemoto (and 2 others) Figure 1 6 Figure 3 Figure 4 Figure 6 Figure 7 Figure 8

Claims (1)

[Claims] 1. An annular ring made of a material having a higher shrinkage rate and coefficient of friction than the cylinder is molded on the outer circumferential wall of a bottomed cylinder with one end open, and the cylinder and the ring are made of different materials. A protective cap for electric razor blades. 2. The electric shaver blade protection cap as set forth in claim 1, wherein an uneven portion is formed on a portion of the ring to serve as a knob portion. 8. The electric shaver blade protection cap according to claim 1, wherein the cylindrical body is made of polycarbonate resin, and the ring is made of rubber. 4. A pair of notches are formed on the outer periphery of the cylindrical body, and the ring and the outer circumferential wall of the cylindrical body are arranged so that a pair of protrusions provided on the inner surface of the ring are rotatably supported in the notches. The electric shaver blade protection cap according to claim 1, characterized in that the electric razor blade protection cap is integrated with the following. 5. The electric shaver blade protection cap according to claim 1, wherein the cylindrical body is transparent.