JPS5943187B2 - electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary electric shaver, and its purpose is to provide a hair introduction comb that straightens long or curly hair and introduces the hair into the hair introduction hole of the outer blade. The outer periphery of the outer blade's circumferential wall (this makes it easy to align when installing it, and the hair introduction comb rotates in the circumferential direction to adjust the relative position of the hair introduction hole of the outer blade and the hair introduction groove of the hair introduction comb). Providing an electric shaver that never slips.

Embodiment F will be explained below with reference to the drawings.

Figures 1 to 5 show the present invention-embodiments; 11-
i outer blade, 21 years old inner blade, outer blade 1 is outer blade frame 3E
The inner cutter 2 is attached to the inner cutter frame 4f.

The outer cutter frame 3 has a threaded cylindrical portion 5F and the trowel main body housing 1 which can be attached and detached freely, and the inner cutter frame 4 has an output shaft 11 of a motor (not shown) mounted inside the main body housing, and is used to drive the motor. The inner cutter 2 rotates while slidingly contacting the inner surface F of the outer cutter 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. The lower end edge of the peripheral wall 10 is held by the outer cutter frame 3t, and the outer peripheral edge t is held close to the outer cutter frame 3t. An annular groove 11 is formed on the upper surface.

A large number of small hair introduction holes 12 are formed in the center F 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 radial direction. However, each of the slit-shaped hair introduction holes 13 is formed into a three-dimensional slit shape, with a portion continuous to the upper part of the peripheral wall 10 and the side wall t of the groove 11.
They are arranged in a circular 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 f.

This hair introduction comb 15 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.

Among the protruding ribs 17 of the hair introduction comb 15, one between the two pairs of protrusion ribs 17 facing each other in the diametrical direction is a positioning protrusion that protrudes from the inner circumferential surface of the hair introduction comb 15 by eliminating the hair introduction 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 moved in the circumferential direction 1.
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 20 of the outer cutter 1 functions as the positioning groove 19.

By the way, in Example 1, there are two alignment convex portions 2.
Although 0 is provided, two or more may be provided at intervals.

Providing a plurality of such alignment convex portions 20 1
As a result, it is possible to reduce the relative positional deviation and wobbling between the hair introduction comb 15 and the outer cutter 1 due to dimensional errors that inevitably occur during manufacturing.

In other words, if only one pair of unevenness retaining parts is provided, the fifth
As shown in Figures a and bf, a gap P is created by the difference (approximately 0.1 mm) between the width 1□ of the convex portion 20 and the slit width 12 of the hair introduction hole 13.
Since rubbing is difficult in terms of processing accuracy, rattling inevitably occurs.

However, if a plurality of protrusions 20 are provided and a plurality of pairs of uneven engaging parts are provided, the dimensional error of each uneven engaging part can be reduced in the same direction F.
It is highly unlikely that this would occur, so
Because there is a slight dimensional error in each uneven retaining portion, the introduction comb 15 is prevented from wobbling, and the relative positions of the introduction comb 15 and the outer cutter 1 are accurately aligned. The hair styled by the introduction comb 15f is smoothly introduced into the hair introduction hole 13f of the outer cutter 1 and cut by the inner cutter 2.

6 and 7a show another embodiment, in which a groove 21 for positioning is bored in the vertical direction on the inner circumferential surface E of the hair introduction comb 15, and the circumferential wall 10 of the outer cutter 1 is Outer circumferential surface] A rib-shaped positioning convex portion 22 is provided.

In FIG. 7, a part of the peripheral wall 10 of the outer cutter 1 is cut and raised to provide a positioning projection 23.

FIG. 8 is based on another embodiment, in which a knurl 25 is provided on the outer circumferential surface of the outer cutter frame 3, and a cylindrical protrusion that presses the lower end of the hair introduction comb 15 on the outer circumferential surface of the outer cutter frame 3. wall 2
6 is provided, and when the cylindrical projecting wall 26 of the outer cutter frame 3f is press-fitted as shown in FIG. Due to the uneven engagement between the knurls 2γ formed by biting into the knurls 25, the hair introducing comb 15 is firmly prevented from rotating once in the circumferential direction.

In this case, the anti-rotation effect is substantially obtained by the uneven engagement between the single knurl 25 and the knurling 2γ, and the uneven engagement between the guide groove entry hole 13 and the convex portion 20 for alignment. It will be the same.

Reference numeral 28 denotes a pull-out prevention protrusion provided at the lower end of the cylindrical projecting wall 26, and when the pull-out preventer protrusion 28 engages with the protrusion-engaging step 29r of the outer cutter frame 3, the hair introduction comb 15 The handle is made to prevent it from falling.

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

The protruding ribs 1γ of the hair introduction comb 15 are spaced apart by one space so that one hair introduction groove 18 is formed corresponding to one or two hair introduction holes 131, as shown in FIG. In this case, the hair styling effect of the hair introduced into the hair introduction hole 131 will be slightly worse, but the efficiency of introducing the hair will be improved.

Further, 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.

As shown in Fig. 11, the height of every other protruding rib 1γ may be lowered, and by rubbing it once like this, the skin enters the hair introduction hole 13 of the outer blade 1. This will prevent severe irritation from occurring on your skin.

The present invention is made up of one piece as described above, and the hair is introduced by aligning the alignment groove and convex portion provided on the outer circumferential surface of the peripheral wall of the outer cutter, the inner circumferential surface of the hair introducing comb, and the t. By extrapolating the comb to the outer circumference of the peripheral wall of the outer blade, one hair introduction comb can be attached to the outer blade with the hair introduction hole of the outer blade and the hair introduction groove of the hair introduction comb matching. The positioning of the hair introduction comb can be easily performed, and the uneven engagement between the positioning groove and the convex portion prevents the hair introduction comb from rotating in the circumferential direction, thereby improving the relative position of the hair introduction comb and the outer blade. It has the advantage that the hair does not shift and a good hair styling effect can always be obtained.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the main parts of the present invention - an embodiment, Fig. 2 is a partially cutaway front view of the main parts of the same, Fig. 3 is an exploded perspective view of the main parts of the same above, and Fig. 4 is an exploded perspective view of the main parts of the same. An exploded perspective view enlarging the main parts of the above, Figures 5a and b are operation explanatory diagrams of the same, and Figures 6 and 7.
Figures a and b are perspective views of essential parts of other embodiments, Figure 8 is an exploded perspective view of essential parts of another embodiment, Figures 9 a and b are explanatory diagrams of the same operation, and Figure 10. and FIG. 11 is a diagram showing a hair introduction comb. 1 is the outer blade, 9 is the top surface, 101j peripheral wall, 13 is the hair introduction hole,
15 is a hair introduction comb, 17 is a protruding rib, 18 is a hair introduction groove,
19 and 21 are grooves, 20 and 22. 23 is a convex portion.

Claims (1)

[Scope of Claims] 1. The upper surface is dome-shaped, and a cylindrical peripheral wall is hung downward from the outer peripheral edge of the upper surface, and a row of three-dimensional slit-shaped hair introduction holes are continuous from the upper part of the peripheral wall to the upper surface. A set outer blade,
The peripheral wall of the outer cutter is provided with a bristle introduction comb in which protruding ribs are spaced apart from each other at the upper end of a cylindrical body to be inserted, and a bristle introduction groove is formed between adjacent protruding ribs. Then, set up an electric razor made by attaching the hair introduction comb to the outer blade so that the hair introduction groove and the hair introduction hole match,
If one groove for positioning is bored in the vertical direction on either the outer circumferential surface of the peripheral wall of the outer blade or the inner circumferential surface of the hair introduction comb,
On the other hand, a positioning convex portion is provided that is engaged with the concave groove, and the concave groove and the convex portion are engaged with each other to attach the hair introduction comb to the outer blade. An electric shaver characterized in that the hair introducing comb is prevented from rotating in the circumferential direction by aligning the grooves. 2. The positioning groove and the convex portion are spaced apart in pairs in the circumferential direction. The electric shaver according to claim 1, characterized in that: 3. The hair introduction holes of the outer blade are grooves for positioning, and E between the protruding ribs of the hair introduction comb protrudes from the inner circumferential surface of the hair introduction comb. 2. The electric shaver according to claim 1, further comprising a convex portion.