JPS606671B2 - electric razor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shaver, and its purpose is to adjust the rate of hair introduction into the hair introduction holes of the fixed blade, the strength of irritation to the skin, and the touch to the skin based on the characteristics of the skin. An object of the present invention is to provide an electric razor that can be adjusted accordingly and can increase the hair introduction rate and improve the shaving speed.

Conventionally, this type of rotary electric shaver uses a hair introduction comb to straighten loose hair (long hair) and curly hair and introduce it into the hair introduction hole of the fixed blade, that is, the outer blade, as shown in Figures 1 and 2.
It is as shown in the figure.

Reference numeral 1 designates an outer blade as a fixed blade with a cylindrical peripheral wall 10 extending downward from the outer circumferential green of the dome-shaped upper surface 9; 2 represents an inner blade as a movable blade; the outer blade 1 is attached to the outer blade frame 3; The blade 2 is attached to an inner blade frame 4.

The outer cutter frame 3 is detachably attached to the main body housing (not shown) using a threaded cylindrical portion 5, and the inner cutter frame 4 is attached to the output shaft 7 of a motor (not shown) in the main body housing. When driven, the inner cutter 2 rotates while slidingly contacting the inner peripheral surface of the outer cutter 1. A small hair introduction hole 12 is provided in the center of the upper surface 9 of the outer blade 1, and a three-dimensional slit-shaped hair introduction hole 13 that is continuous with the outer green portion of the upper surface 9 is provided in the upper part of the peripheral wall 10 in the horizontal direction. There are many annular holes, and hair introduction holes 1
3 are arranged in long radial rows in the direction of the fleas. Reference numeral 15' denotes a hair introduction comb, and the hair introduction comb 15' has a protruding rib 17 protruding from its upper end surface to form a hair introduction groove 18 corresponding to the hair introduction hole 13. The blade 1 is attached to the outer periphery of the peripheral wall 10 of the outer blade 1 so that the hair introduction hole 13 of the blade 1 is fully fitted.

By the way, in such a follow-up example, the hair introduction comb 1
When hair is introduced into the hair introduction hole 13 of the outer blade 1 while being styled with the hair introduction comb 5' and cut with the inner blade 2, the hair introduction comb 15'
Also, if the shape of the hair introduction hole 13 of the outer cutter 1 or the relative position between the hair introduction comb 15' and the outer cutter 1 is not appropriate, the inner cutter 1
This may cause the skin S to be cut, resulting in stronger irritation or poor skin contact. That is, the main factor that influences the stimulation is the slit of the hair introduction hole 13 in the outer blade 1. , and the blade thickness T, and the hair introduction comb 15'
, the length in the hair introduction groove direction, ie, the radial dimension W, of the hair introduction groove 18 and the protrusion IJ part 17, and the relative position of the hair introduction comb 15' and the outer blade 1 is the height difference. That is, the difference in level is Δ and the lateral deviation between the hair introduction hole 13 and the hair introduction groove 18 is ΔB. Further, factors related to the contact with the skin are the corners R, , R2 of the protruding ribs 17, the level difference Δ between the hair introduction comb 15 and the outer blade 1, and the inclination angle a of the upper end surface of the protruding ribs 17. By the way, in the conventional hair introduction comb 15, it was not possible to adjust the factors that affect irritation and the factors that affect skin contact, so depending on the characteristics of the user's skin, the hair introduction comb 15 may There is a drawback that the amount of protrusion 6 of the outer blade 1 of the S into the hair introduction hole 13 becomes larger than necessary, and the skin S may be cut by the inner blade 2, resulting in strong irritation or poor contact with the skin. Ta. The present invention has been made in view of the above points. Examples will be described below using figures.

4 to 6 show an embodiment of the present invention, in which the direction of the hair introduction groove (radial direction) of the protruding rib 17 forming the hair introduction groove 18 of the hair introduction comb 15, that is, the direction of movement of the movable blade, Shorten the length of every other fixed blade and movable blade in the direction perpendicular to the overlapping direction (W,, W2, W,, W2...
), and as shown in FIG. 7, the length of the protruding rib 17 is a constant length W3.

= (P2 - × 2 - × 3) / P2 A larger closure rate, = (P, 1 ×,) / P, can be obtained, so the hair introduction part in the plane perpendicular to the hair introduction direction h. The hair introduction rate with respect to the distance from the center of the hair introduction part is as shown in FIG. 8, and even if the distance from the center of the hair introduction part becomes large, a high hair introduction rate can be obtained. Note that the other configurations are the same as the configuration shown in FIG. FIG. 9 shows another embodiment,
Circle ○ passing through the inner surface of the protruding rib 17, and circle 02 passing through the outer surface
The length of the protruding rib 17 in the direction of the hair introduction groove is continuously changed so that the lengths in the direction of the hair introduction groove are non-concentric, and the length of the protrusion rib 17 in the direction of the hair introduction groove is the maximum Wa, and the protrusion rib 17 is the minimum length Wb. 17 are arranged to face each other with the outer cutter 1 in between.

In this case, the user only has to select and use the position where the protruding rib 17 is most likely to touch the skin. In the embodiment shown in FIG. 4, the lateral deviation ΔB between the hair introduction hole 13 and the hair introduction groove 18 is adjusted by making the hair introduction comb 15 slidable along the outer periphery of the peripheral wall 10. By this, the effective hair introduction area A can be changed, and the hair introduction hole 13 can be changed.
The hair introduction rate and skin contact can be adjusted as appropriate.

FIG. 10 shows still another embodiment, in which the hair introduction comb 15 in the above-mentioned embodiment is divided into two (or more than two divisions may be divided) on a plane perpendicular to the direction of the hair introduction groove, and the divided hair is A guide groove 32a provided on both sides of the annular groove 20, with a spherical protrusion 30 provided on the inner peripheral surface of the introduction comb 15a and an annular protruding rib 31 provided on the outer peripheral surface of the hair introduction comb 15b, respectively.
32b and 33a, 33b to freely move the hair introducing combs 15a, 15b in the circumferential direction (lateral direction), the protrusion 30, and the annular protruding rib 31 are connected to the lower guide groove. 32a, 33a or the upper guide grooves 32b, 33b constitutes a vertical moving means 35 that allows the hair introduction combs 15a, 15b to move freely in a stepwise manner in the vertical direction.

In the figure, 20 is an annular groove provided on the upper surface of the outer cutter frame 3, 24 and 25 are springs, 26 is a mounting screw for the outer cutter 1, 27 is a holding piece, and 36 is a partition wall. Now, hair introduction comb 15
By adjusting the sliding movement of either a or 15b in the circumferential direction, the effective hair introduction area A can be changed as in the previous embodiment, and the hair introduction rate into the hair introduction hole 13 and the contact with the skin can be adjusted as appropriate. Can be adjusted. In addition, hair introduction combs 15a, 15b
can move up and down in a stepwise manner, so that the step difference between the hair introduction combs 15a, 15b and the outer blade 1 and the equivalent inclination angle 8' of the upper end surface of the hair introduction combs 15a, 15b, that is, the outer blade 1 upper surface 9 and the hair introduction comb 15
It is possible to change the angle formed between the uppermost ends of a and 15b and the plane passing through them, so that the stimulation to the skin and the contact with the skin can be adjusted according to the condition of the user's skin. As described above, the present invention provides a fixed blade in which a large number of hair introduction holes are bored in the direction of movement of the movable blade, and a protruding rib that is spaced between the protruding ribs so that the hair introduction hole of the fixed blade and the hair that are suitable for the lotus are connected to each other. In an electric shaver equipped with a hair introduction comb provided with an introduction groove, the length of each protruding rib in the direction perpendicular to the direction of movement of the movable blade and the direction in which the fixed blade and the movable blade overlap are changed as appropriate. Since the length of the hair introduction groove of the hair introduction comb is changed as appropriate, the rate of hair introduction into the hair introduction hole of the fixed blade, the intensity of irritation to the skin, and the contact with the skin can be adjusted according to the characteristics of the skin. This has the effect of increasing the hair introduction rate and improving the shaving speed. Although the embodiment shows a rotary electric shaver according to the present invention, the present invention is not limited to a rotary electric shaver, but can also be applied to a reciprocating electric shaver in which a movable blade in sliding contact with a fixed blade is driven back and forth. Needless to say, you can use it.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of an electric shaver according to the present invention, Fig. 2 is a perspective view of main parts of a conventional example, Fig. 3 is an explanatory diagram of the same operation, and Fig. 4 is an illustration of an embodiment of the present invention. A top view of the main parts, FIG. 5 is a perspective view of the main parts as above, FIG. 6 is an enlarged perspective view of the main parts as above,
7 and 8 are explanatory diagrams of the same operation as above, FIG. 9 is a top view of the main part of another embodiment, and FIG. 10 is a sectional view of the diamond part of still another embodiment. 1 is a fixed blade, 13 is a hair introduction hole, 1 5, 15a, 15b
is a hair introduction comb, 17 is a protruding rib, 18 is a hair introduction groove, 34
35 is a rattan moving means, and 35 is a vertical moving means. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 ? Figure 8 Figure 9 Figure 10

Claims (1)

[Scope of Claims] 1. A fixed blade in which a large number of hair introduction holes are drilled in the direction of movement of the movable blade, and a hair introduction that has projecting ribs spaced apart and communicates between the projecting ribs with the hair introduction holes of the fixed blade. An electric shaver equipped with a hair introduction comb provided with grooves, characterized in that the length of each protruding rib in the direction perpendicular to the moving direction of the movable blade and the overlapping direction of the fixed blade and the movable blade is changed as appropriate. electric razor. 2. The electric shaver according to claim 1, further comprising a lateral moving means that allows the hair introduction comb to slide laterally along the fixed blade. 3. The electric shaver according to claim 1, further comprising a vertical moving means for vertically moving the hair introduction comb.