JPS603503B2 - rotary electric razor - Google Patents

Description

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

- Conventionally, an electric shaver that uses a hair introduction comb attached to the outer blade to straighten long or curly hair and introduce it into the hair introduction hole of the outer blade is shown in Figures 1 and 2. The outer cutter 1 is equipped with an annular hair introduction comb 15a having a hair introduction groove 18 corresponding to the three-dimensional slit-shaped hair introduction holes 13 arranged in rows around the outer edge of the outer cutter 1.

However, in such a conventional example, all the hair introduction grooves 18 of the hair introduction comb 16a are formed in the radial direction, that is, in a radial manner, so that the hair introduction grooves 18 in the center of the hair introduction part as shown in FIG. So during the projection of 18 becomes the largest (the entire length of the hair introduction groove 18), and S during the projection of the hair introduction grooves 18 on both sides
, , S2... become smaller sequentially. (The direction of hair introduction is the arrow) Therefore, the distance from the center of the hair introduction direction is 1 (
FIG. 3 shows the correlation between the direction of hair introduction and the distance in the perpendicular plane) and the rate at which hair is captured in the hair introduction hole 13 of the outer cutter 1. As is clear from the figure, the hair introduction groove 18 in the center can capture 100% of the hair to be introduced into the hair introduction hole 13, but the outer blade 1 with a diameter of 30 to 4 mm can capture 100% of the hair to be introduced into the hair introduction hole 13. In the hair introduction groove 18 on the side about 10 sides away from the hair introduction hole 13, the capture rate is 0%, and there is a drawback that almost no hair can be introduced into the hair introduction hole 13. Furthermore, in order to improve the introduction of hair, if the groove of the introduction port of the hair introduction groove 18 is widened, as shown in FIG. Quantity 6 increases,
The skin S may be cut by the inner blade 2 and may receive strong irritation. Furthermore, since the groove of the hair inlet is wide, the hair once trapped in the hair inlet groove 18 is transferred to the hair inlet 13 of the outer blade 1. It had the disadvantage that it sometimes escaped before it was introduced and cut. The present invention aims to solve the above-mentioned drawbacks. Examples will be described below using figures. 5 to 9 show an embodiment of the present invention,
1 is an outer cutter, and 2 is an inner cutter. The outer cutter 1 is attached to an outer cutter frame 3, and the inner cutter 2 is attached to an inner cutter frame 4. The outer cutter frame 3 is inserted into an output ball 7 of a motor (not shown) in the main body housing 5, and the inner cutter 2 rotates while slidingly contacting the inner peripheral surface of the outer cutter 1 when driven by the motor. The outer cutter 1 has a cylindrical peripheral wall 10 integrally suspended from the outer peripheral edge of the dome-shaped upper surface 9, and the lower green end of the peripheral wall turtle 0 is held by the outer cutter frame 3. A small hair introduction hole 12 is provided in the center, and three-dimensional slit-shaped hair introduction holes 3 connected to the outer peripheral edge of the upper surface 9 are arranged in an annular row in the upper part of the peripheral wall 10. . This hair introduction hole 13
The part (A part) formed on the upper surface is parallel, forming what is called a three-dimensional slit that is parallel to each other.In addition, the hair introduction hole 13 in the center of the slit is arranged so that the projections are approximately equal. The slits in the side hair introduction holes 13 are made equal to the slits in the side hair introduction holes 13.The other parts are formed radially like the conventional example.15 is a hair introduction comb; 15 is a protruding rib 1 on the upper surface of the cylindrical body 16.
7 are spaced apart from each other, and between the adjacent protruding ribs 17 there is a hair introduction groove corresponding to the hair introduction hole 13 of the outer cutter 1.
8 is formed.

Parts (portions B) of the protruding ribs 17 are provided to protrude parallel to each other, and the hair introduction grooves 18 formed in these parts are parallel grooves. The protruding rib 17 is a protruding rib 17a with a gourd-shaped horizontal cross section as shown in FIG. 8, or a protruding rib 17b with a rust-like horizontal cross section as shown in FIG. Irregularities are formed on the side wall.The hair introduction comb 15 is inserted onto the outer periphery of the peripheral wall 10 of the outer cutter 1 so that the hair introduction hole 13 and the hair introduction groove 18 match and are moved.No. 10
The figure shows another embodiment in which a bristle introducing comb 15' having parallel bristle introducing grooves 18 provided in a cylindrical part is attached to the outer cutter 1. Hair introduction groove 1, which is now a parallel groove
If you move the electric razor so that the hair is introduced along the 8' direction (from the direction of the arrow), the hair capture rate will be the same as the hair introduction groove 1.
Almost 1 in the range where 8 is a parallel groove (part B)
00%, and the hair capture rate is significantly improved compared to the conventional example.

In this case, the capture rate of long hair and curly hair differs depending on the moving direction of the electric razor, that is, the shaving direction (same as conventional except for the parallel grooves and parallel direction), so the effect of introducing hair is clearly indicated by the arrow "H" on the main body housing 5. It has been done. 8 in the figure is a switch. By the way, in the embodiment, since unevenness is formed on the side wall of the hair introduction groove 18, once the hair is captured, it does not escape.
, can be made larger, and the introduction of hair can be improved, and the amount by which the skin protrudes into the hair introduction groove 18 when the rough protruding rib 17a or 17b is pressed against the skin is smaller than the hair introduction groove 18. Since it is determined by the minimum value t2, it is possible to prevent the protruding amount of the skin from increasing and receiving strong irritation from being cut by the inner blade 2 as in the following example.

Figure 1 shows the structure of the attachment part of the hair introduction comb 15 to the outer cutter 1, in which a bulge 20 is provided at the lower end of the hair introduction comb 15 made of resin or rubber, and a cross section V is provided on the lower end surface. A notch 21 is provided in the shape of a letter, and an annular joint groove is formed between the outer cutter 1 and the protruding wall 23 that is curved inwardly on the upper end surface of the outer cutter frame 22. The lower end of the hair introducing comb 15 is press-fitted into the 24, and when the lower end of the hair introducing comb 16 passes through the opening □ of the iron fitting groove 24, the legs 21a and 21b are manipulated inward to form the V-shaped notch. 21 passes in a contracted state, but when the lower end portion is completely press-fitted into the fitting groove 24, both leg portions 21a and 21b are restored to their original state, thereby providing a retaining effect.

In the figure, reference numeral 25 denotes a positioning engagement hole provided in the outer cutter 1, and when the bulging portion 20 of the leg 21a engages with the engagement hole 25, the relative position of the hair introduction comb 15 and the outer cutter 1 is adjusted. It is designed to prevent it from shifting. In FIG. 12, a positioning projection 26 is provided on the hair introduction comb 15, and the hair introduction comb 15 and the outer blade 1 are positioned by engaging this projection 26 with the hair introduction hole 13 of the outer blade 1. It has become.

The present invention is constructed as described above, in which a cylindrical peripheral wall extends downward from the outer peripheral edge of the dome-shaped upper surface, and three-dimensional slit-shaped hair introduction holes that are continuous with the upper surface are arranged in an annular row at the upper peripheral edge. The hair introduction comb is equipped with a hair introduction comb provided with mutually parallel hair introduction grooves corresponding to a plurality of adjacent hair introduction holes along the outer periphery of the peripheral wall of the outer blade. Since they are arranged adjacent to each other, the hair capture rate is approximately 100° C. across the plurality of hair introduction holes, which has the advantage that the hair introduction efficiency is improved. Also,
The side walls of the hair introduction groove are uneven, which prevents the hair from escaping once it has been captured, making it possible to enlarge the groove near the hair introduction opening and improving the efficiency of hair introduction. In addition, when the L rib is pressed against the skin, the amount that the skin protrudes into the hair introduction groove is determined by the minimum length of the hair introduction groove, so the amount of skin protrusion becomes large as in the conventional case. It has the advantage of preventing strong irritation caused by cutting the skin with the inner blade.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view of a main part of the conventional example, Fig. 2 is a top view of the same as above, Figs. Fig. 6 is an enlarged perspective view of the same essential parts as above, Fig. 7 is a front view of the same partially cut away part, Fig. 8 is an enlarged perspective view of the essential parts of the same as above, and Fig. 9 is an enlarged perspective view of the main parts of the same as above. FIG. 10 is an enlarged perspective view of a main part, FIG. 10 is a perspective view of a main part of still another embodiment, and FIGS. 11 and 12 are diagrams showing the configuration of a part for attaching a hair introduction comb to an outer blade. 1 is an outer blade, 2 is an inner blade, 9 is an upper surface, 1Q' is a peripheral wall, 13 is a hair introduction hole, 15, 15' is a hair introduction comb, 17, 17a
, 17b is a protruding rib, and 18 is a hair introduction groove. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 10 Figure 8 Figure 9 Figure 11 Figure 12

Claims (1)

[Claims] 1. An outer cutter with a cylindrical circumferential wall hanging downward from the outer circumferential edge of the dome-shaped upper surface, and on the upper part of the circumferential wall, three-dimensional slit-shaped hair introduction holes continuous to the upper surface are arranged in an annular manner, and an inner circumference of the outer cutter. The inner cutter rotates while sliding on the surface, and the outer cutter has parallel bristles that correspond to a plurality of adjacent bristles introduction holes by having protruding ribs spaced parallel to each other on the upper surface and arranged along the outer periphery of the peripheral wall of the outer cutter. What is claimed is: 1. A rotary electric shaver equipped with a hair introduction comb provided with an introduction groove, characterized in that both side walls of the hair introduction groove are provided with unevenness.