JPS5943188B2 - electric razor - Google Patents

Description

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

In order to introduce and cut long or curly hair, an outer blade with a three-dimensional slit-shaped hair introduction hole is already available, but from the viewpoint of the strength of the outer blade, a three-dimensional slit-shaped hair introduction hole is provided. It is not possible to make the hair introduction hole very large, and for this reason f
Even though it has a three-dimensional slit-shaped hair introduction hole, it can successfully catch and cut long hair or curly hair that exceeds 5 mm in length (this is done by aligning the direction of the hair with the direction of the slit-shaped hair introduction hole). I had to do it, and it took me an hour to shave.

The present invention has been provided in view of such point E,
The purpose of this is to guide long and curly hair into the three-dimensional slit-shaped hair introduction hole, and thus "to provide an electric razor that can shave in a short time without leaving any residue. .

[Examples] Hereinafter, explanations will be given with reference to figures.

1 to 5 show an embodiment of the present invention, in which 1 is an outer cutter, 2 is an inner cutter, the outer cutter 1 is attached to an outer cutter frame 31, and the inner cutter 2 is attached to an inner cutter frame 4. installed.

The outer cutter frame 3 is removably attached to the threaded cylindrical portion 5F and the iron body housing E, and the inner cutter frame 4 is attached to the output shaft 71 of a motor (not shown) in the main body housing. The inner blade 2 of the iron rotates while slidingly contacting the inner surface F of the outer blade 1.

The outer cutter 1 has a shape in which a cylindrical peripheral wall 10 is integrally suspended from the outer peripheral edge of the dome-shaped upper surface 9, and the lower end edge of the peripheral wall 10 is held by the outer cutter frame 3I, and the outer peripheral edge f is close to the lower edge of the peripheral wall 10. A circular groove 1 is formed on the upper surface.

A large number of small hair introduction holes 12 are formed in the center of the upper surface 9 of the outer blade 1, and a large number of slit-shaped hair introduction holes 13 are formed in the outer circumference of the upper surface 9 in the anatomical direction F. The slit-shaped hair introduction holes 13 are three-dimensional slits in which a portion of the slit-shaped hair introduction holes 13 are continuous up to the upper part of the peripheral wall 10 and one side wall of the groove 1, and are arranged in an annular row.

Reference numeral 15 denotes a hair introduction comb, and the hair introduction comb 15 has protruding ribs 17 spaced apart from each other on the upper end surface of the cylindrical body 16. Hole 13
A hair introduction groove 18 is formed to correspond to the hair introduction groove.

This hair introduction comb 151 is inserted around the outer circumference of the peripheral wall 10 of the outer cutter 1 so that the hair introduction hole 13 and the hair introduction groove 18 coincide with each other.

One of the protruding ribs 17 of the hair introducing comb 15 is located between two pairs of protruding ribs 11 that are diametrically opposed, and there is an alignment protrusion that protrudes from the inner circumferential surface of the hair introducing comb 15 without the hair introducing groove 18. 20 is provided, and by engaging this protrusion 20 with the hair introduction hole 13f of the outer cutter 1, when the hair introduction comb 15 is aligned, the hair introduction comb 15 is simultaneously moved in the circumferential direction f.
It is designed to prevent this rotation.

In this case, the three-dimensional slit-shaped hair introduction hole 13 provided in the upper part of the peripheral wall 10 of the outer cutter 1 operates as the positioning groove 19.

By the way, in this example, two alignment convex portions 2
Although 0 is provided, two or more may be provided at intervals.

By providing a plurality of positioning convex portions 20 in this way, it is possible to reduce the displacement and rattling in the relative position between the hair introduction comb 15 and the outer blade 1 due to dimensional errors that inevitably occur during manufacturing. This will happen.

In other words, if only one pair of concave-convex engaging portions is provided, the fifth
Diagram a.

As shown in b, the width 11 of the convex portion 20 and the hair introduction hole 13 are
A gap P is generated by the difference (approximately 0.1 mm) from the slit width 12. Since it is difficult in terms of machining accuracy to rub this gap P, rattling is inevitable. do.

However, if a plurality of protrusions 20 are provided and multiple pairs of concave-convex engaging portions are provided, it is highly unlikely that the dimensional errors of the concave-convex retaining portions will occur in the same direction. Because there is a slight dimensional error in the retaining part, the rattling of the hair introduction comb 15 is prevented, and the relative positions of the hair introduction comb 15 and the outer blade 1 are accurately aligned. The hair styled by the introduction comb 15E is smoothly introduced into the hair introduction hole 13f of the outer cutter 1 and cut by the inner cutter 2.

FIG. 6 and FIG. 1a show another embodiment, in which grooves 21 for positioning are bored in the vertical direction on the inner peripheral surface of the hair introduction comb 15, and the peripheral wall 10 of the outer cutter 1 is A rib-shaped positioning convex portion 22 is provided on the outer peripheral surface f.

In FIG. 1, a part of the peripheral wall 10 of the outer cutter 1 is cut and raised to provide a positioning projection 23.

FIG. 8 shows another embodiment, in which a knurl 25 is provided on the outer circumferential surface of the outer cutter frame 3, and a cylindrical projecting wall 26 is provided in pressure contact with the lower end of the hair introduction comb 15 (the outer circumferential surface of the outer cutter frame 3).
When the cylindrical projecting wall 26 of the hair introduction comb 15 on the outer cutter frame 3F is press-fitted as shown in FIG.
5 bites into the uneven engagement between the knurling 27 and the row rate 25.
It is designed to strongly prevent rotation.

In this case, the anti-rotation effect is substantially obtained by the uneven engagement between the l-th knurl 25 and the knurling eye 2γ, and the uneven engagement between the hair introduction hole 13 and the convex portion 20 is the uneven engagement for main alignment. becomes.

Reference numeral 2'8 denotes a pull-out prevention protrusion provided at the lower end of the cylindrical projecting wall 26, and this pull-out prevention protrusion 28 engages with the protrusion retaining step 291 of the outer cutter frame 3. The comb 15 is curved to prevent it from falling off.

In this case, the outer cutter frame 3 is a metal such as aluminum, and the hair introduction comb 15 is an elastic molded product such as Duracon.

Note that the protruding ribs 1γ of the hair introduction comb 15 are spaced apart with a wide interval E so that one hair introduction groove 18 is formed corresponding to the two hair introduction holes 13f, as shown in FIG. 10. In this case, the hair styling effect of the hair introduced through the hair introduction hole 13 will be slightly worse, but the ease of introducing the hair will be improved.

In addition, if the hair styling effect is good even if the hair styling effect is poor, the interval between the single protruding ribs 1γ may be further increased.

Furthermore, as shown in Fig. 11E, the height of the protruding rib 11 can be lowered by rubbing it in this way. Hair introduction hole 13 of blade 1
It can reduce the strong irritating force that enters the skin and causes damage to the skin.

Next, the function of the hair introduction comb 15 will be explained in detail.

The drawing shown in FIG. 12 corresponds to the embodiment shown in FIG. , 31 is the skin.

If you move the electric razor in the direction of the arrow f, the long hair 36 or the curved hair 36 will move in that direction (regardless of the hair introduction comb 15
The hair introduction groove 18F is arranged, and the three-dimensional slit-shaped hair introduction hole 13f that matches the hair introduction groove 18F is guided.
The inner blade 2t performs a rough shave and shortens the length to 2 to 3 mm.

And as shown in Figure 12 c and df, the hair 3 has become shorter.
The shavings 6 are cut one length shorter by the stubble introducing hole 12 and the inner blade 2 for a final shave.

According to the present invention, as described above, a hair introduction groove is formed on the outer circumference of the three-dimensional slit-shaped hair introduction hole provided on the circumference of the outer cutter. Because it is equipped with a formed hair introduction comb, even if the direction of the three-dimensional slit-shaped hair introduction hole of the outer blade is different from the direction of long hair or curved hair and the hair introduction hole cannot be introduced as it is. ,
The hair introduction groove of the hair introduction comb (thus, the direction of the hair is arranged in the same direction as the hair introduction hole, and the hair is guided to the hair introduction hole t), and the three-dimensional slit-shaped hair introduction hole and the inner blade The hair cut by the hair is cut shorter than the normal hair introduction hole and the inner blade, and even when there is long hair or curved hair, it can be cut in a short time without leaving any unshaved parts. It is something that can be done.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a main part of an embodiment of the present invention, Fig. 2 is a partially cutaway front view of the main part of the same, Fig. 3 is an exploded perspective view of a main part of the same as above, and Fig. 4 is an exploded perspective view of the main part of the same as above. An exploded perspective view of the main parts,
FIGS. 5a and 5b are a partial plan view and a perspective view of the same as above, and FIGS. 6 and 7a and 7b are perspective views of main parts of other embodiments, respectively.
FIG. 8 is an exploded perspective view of essential parts of another embodiment of the present invention, FIG. 9 a7b is a sectional view of the same, and FIGS. 10 and 11 are further t
The perspective views of other embodiments and FIGS. 12a, 12b, 12c and d are sectional views showing the action of the hair introduction comb. 1 is an outer blade, 9 is an upper surface, 10 is a peripheral wall, 13 is a hair introduction hole, 1
5 is a hair introduction comb, 17 is a protruding rib, and 18 is a hair introduction groove.

Claims (1)

[Claims] 1. The upper surface is dome-shaped, and a cylindrical peripheral wall is hung downward from the outer periphery of the upper surface, and the peripheral wall earth part E is an outer blade in which continuous three-dimensional slit-shaped hair introduction holes are arranged in the upper surface. A hair introduction comb is provided, in which projecting ribs are provided at intervals on the upper end surface of the cylindrical body to be inserted into the peripheral wall F of the outer blade, and hair introduction grooves corresponding to the hair introduction holes F are formed between the adjacent projecting ribs. An electric shaver characterized in that the hair introduction comb is attached to the outer blade so that the hair introduction groove and the hair introduction hole match.