JPS6058677B2 - electric razor - Google Patents

Description

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

Conventionally, this type of rotary electric shaver, in which long hair or curly hair is styled using a hair introduction comb and introduced into the hair introduction holes of the outer blade, is shown in FIGS. 1 and 2.

Reference numeral 1 indicates an outer cutter with a cylindrical peripheral wall 10 hanging downward from the outer peripheral edge of the dome-shaped upper surface 9, and reference numeral 2 indicates an inner cutter.The outer cutter 1 is attached to the outer cutter frame 3, and the inner cutter 2 is attached to the inner cutter frame. It is attached to 4.

The outer cutter frame 3 can be attached to and removed from the main body housing 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, and the inner cutter frame 4 is attached to the output shaft 7 of a motor (not shown) in the main body housing. The blade 2 rotates while slidingly contacting the inner peripheral surface of the outer blade 1. A small hair introduction hole 12 is located in the center of the upper surface 9 of the outer blade 1.
In the upper part of the peripheral wall 10, a large number of three-dimensional slit-shaped hair introduction holes 13 that are continuous with the outer peripheral edge of the upper surface 9 are bored in an annular manner, and the hair introduction holes 13 are arranged in long radial rows in the radial direction. It has been done. 15 is a hair introduction comb; hair introduction comb 1;
5 has a protruding rib 17 protruding from the upper end surface of the cylindrical body 16 to form a hair introduction groove 18 corresponding to the hair introduction hole 13;
It is attached to the outer periphery of the peripheral wall 10 of the outer cutter 1'' so that the hair introduction groove 18 and the hair introduction hole 13 of the outer cutter 1 communicate with each other.

By the way, in such a conventional example, the hair introduction comb 1
When hair is introduced into the hair introduction hole 13 of the outer cutter 1 and cut with the inner cutter 2 while hair is being styled by 5, the shape of the hair introduction comb 15, the hair introduction hole 13 of the outer cutter 1, or the shape of the hair introduction comb 15 is determined. If the relative position with the outer cutter 1 is not appropriate, the inner cutter 2 will cause damage to the skin S.
The skin may be cut, resulting in increased irritation or discomfort on the skin. That is, the factors that influence the stimulation are the slit width B1 of the hair introduction hole 13, the slit opening width and the blade thickness T in the outer blade 1, and the factors that affect the stimulation
What is the width of the hair introduction groove 18? is the radial dimension W of the protruding rib 17, and the relative position between the hair introduction comb 15 and the outer cutter 1 is the height difference, that is, the step difference ΔH. Further, factors related to the contact with the skin are the corner portions R1 and R2 of the protruding rib 17, the step difference ΔH between the hair introduction comb 15 and the outer cutter 1, and the inclination angle 0 of the upper end surface of the protruding rib 17. However, in the conventional example, even when the hair introduction comb 15 is movable in the vertical direction, the level difference ΔH between the hair introduction comb 15 and the outer blade 1 is large, as shown in FIGS. 3A and 3B. However, the radial dimension W1 of the protruding rib 17 of the hair introduction comb 15 could not be changed, such as the angle of inclination 0 of the upper end surface. Therefore, in order to reduce the irritation to the skin S, as shown in FIG.
If ΔH is increased, the amount of bite of the protruding ribs 17 into the skin S increases, resulting in poor skin contact.On the other hand, as shown in FIG. This causes the outer cutter 1 to bite into the hair introduction hole 13 more than necessary, and the inner cutter 2 cuts the skin S, increasing irritation. Therefore, it has the disadvantage that it feels good on the skin and it is difficult to reduce irritation. The present invention aims to solve the above-mentioned drawbacks. Examples will be described below using figures.

4 to 6 show one embodiment of the present invention, 15a
, 15b are hair introduction combs, each having a cylindrical body 16a.
, 16b, the upper surfaces of which descend outward. The protruding ribs 17a, 17b are provided with protruding ribs 11a, 17b having arcuate surfaces.
Hair introduction grooves 18a and 18b are formed between 7b, and the first hair introduction comb 15 is attached to the outer periphery of the peripheral wall 10 of the outer cutter 1.
The inner circumferential diameter of the hair introducing comb 15a is slightly larger than the outer circumferential diameter of the outer cutter 1.
The inner diameter of the hair introduction comb 15b is the same as that of the first hair introduction comb 1.
It is approximately equal to the outer circumferential diameter of 5a. Both hair introduction comb 1
The lower portions of the hair introduction combs 5a and 15b are fitted into an annular groove 20 provided in the outer cutter frame 3, and are elastically held by push-up springs 21a and 21b, which are coil springs, respectively. Cylindrical body 16a, 1 of 15a, 15b
By engaging with the inner flanges 23a, 23b provided at the opening of the annular groove 20 of the locking ribs 22a, 22b provided at the center of the protruding ribs 17a, 17b, the upper end surfaces of the protruding ribs 17a, 17b are fixed to the outer blade 1. It is adapted to be locked so as to be located slightly above the peripheral edge of the upper surface 9. Reference numeral 24 denotes a partition wall protruding from the center of the bottom surface of the annular groove 20. A plurality of guide ribs 25a and 25b are vertically spaced apart from each other on the inner and outer circumferential surfaces of the partition wall 24, respectively. The hair introduction grooves 18a of both hair introduction combs 15a and 15b are engaged with the guide groove 26a provided on the outer peripheral surface of the hair introduction comb 15a and the guide groove 26b provided on the inner peripheral surface of the hair introduction comb 15b. , 18b and the bristle introduction hole 13 of the outer cutter 1 are aligned and communicated with each other, both the bristle introduction combs 15a and 15b can be slid in the vertical direction.

In the figure, 27 is a fixing screw for attaching the outer cutter 1 to the outer cutter frame 3, and 28 is a holding metal fitting. Note that the other configurations are similar to the conventional example shown in FIG. Now, in the case where the outer blade 1 and the hair introducing combs 15a, 15b are pressed against the skin S to cut the hair while styling the hair, both the hair introducing combs 15a, 15
Since b is elastically held by push-up springs 21a and 21b, each hair introduction comb 15a and 15b responds to pressures P, and P2 received from skin S as shown in FIG.
The outer cutter 1 slides vertically (approximately proportionally).
Step differences ΔHl and ΔH2 between the hair introduction combs 15a and 15b
change independently.

Therefore, by appropriately adjusting the pressing force against the skin S, the amount of protrusion δ of the outer cutter 1 into the hair introduction hole 13 can be selected, and the outer cutter 1 can be used without irritation to the skin S and without any unshaved parts. will be possible. On the other hand, at this time,
Both hair introduction combs 15a and 15b can be slid up and down independently,
Equivalent inclination angle of the upper surface of the hair introduction combs 15a, 15b is 0
'' and the radial dimension W'' can be adjusted, so the upper surfaces of both hair introduction combs 15a and 15b automatically change according to the curves and wrinkles of the skin S, and the hair introduction comb The biting of the parts 15a and 15b into the skin S is reduced, and the contact with the skin is much better than in the conventional example. FIG. 8 shows another embodiment, in which the annular groove 2
By providing click protrusions 29a, 29b on both side walls of the 0, the height of each hair introduction comb 15a, 15b can be adjusted in a stepwise manner. The height of the combs 15a, 15b can be set. 9 and 10 show still another embodiment, in which the inner hair introduction comb 15a is formed integrally with the outer cutter frame 3.
In the figure, a crimp piece 3 provided at the lower end of the peripheral wall 10 of the outer cutter 1
1 into the L-shaped outer blade fixing groove 32 from above, and
By rotating the outer cutter 1 in the direction of the arrow x, the outer cutter 1 is fitted into the outer cutter frame 3, and in FIG. 33 is press-fitted into the outer cutter fixing groove 34 of the outer cutter frame 3 to attach the outer cutter 1 to the outer cutter frame 3. As shown in FIG. 11, positioning holes 35 are provided at several locations on the peripheral wall 10 of the outer cutter 1, and the outer cutter 1 is fixed at a predetermined position within the mold for forming the outer cutter frame using the positioning holes 35. The outer cutter 1 may be fixed in a predetermined position using a synthetic resin such as Dieracon or the like when the outer cutter frame 3 is molded. The present invention is configured as described above, in which the first hair introduction comb is attached to the outer periphery of the outer blade, and the second hair introduction comb is attached to the outer periphery of the first hair introduction comb, and at least one of the hair introduction combs is attached to the outer circumference of the outer blade. Since the hair introduction comb is vertically slidable, the height difference between the hair introduction comb and the outer blade, as well as the angle of inclination and radial dimension of the upper surface of the hair introduction comb, can be adjusted appropriately, thereby reducing irritation to the skin. It has the advantage that it can be used in small amounts and feels good on the skin.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of the main parts of the conventional example, Fig. 2 is a perspective view of the main parts of the same as above, Figs. Main part sectional view, Figures 5 and 6
7 is an explanatory view of the same operation as above, FIG. 8 is a cross-sectional view of main parts of another embodiment, and FIGS. 9 and 10 are each of still another embodiment. Exploded perspective view,
FIG. 11 is a perspective view of an outer cutter used in yet another embodiment. 1 is an outer blade, 9 is an upper surface, 10 is a peripheral wall, 13 is a hair introduction hole, 1
5a and 15b are hair introduction combs, 16a and 16b are cylindrical bodies, 17a and 17b are projecting ribs, 18) A and 18b are hair introduction grooves, and 21a and 21b are push-up springs.

Claims (1)

[Scope of Claims] 1. An outer circumferential wall of an outer blade in which a cylindrical circumferential wall is hung downward from the outer circumferential edge of the dome-shaped upper surface, and in 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. A first hair introduction comb having a protruding rib formed on the upper end surface of the cylindrical body to form a hair introduction groove corresponding to the hair introduction hole is attached to the cylindrical body, and the second hair introduction comb is attached to the first hair introduction comb. An electric shaver, which is attached to the outer periphery of the razor, the hair introduction grooves of both hair introduction combs and the hair introduction holes of the outer blade are communicated with each other, and at least one of the hair introduction combs is made vertically slidable. 2. The electricity according to claim 1, characterized in that both bristle introduction combs are held by push-up springs so that the tip surfaces of the projecting ribs of both bristle introduction combs are located slightly above the outer periphery of the upper surface of the outer blade. Razor. 3. Claim 1, characterized in that the tip end surface of the projecting rib is an arcuate surface that descends outward and projects upward.
Electric shaver as described in section. 4. The electric shaver according to claim 2, wherein the height of the hair introduction combs is adjusted stepwise by providing click stop means on both hair introduction combs.