JP3732862B2 - Electric razor - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an electric razor, and more particularly to an electric razor provided with a net blade and a trimmer blade and capable of simultaneously applying both types of blades to the skin.
[0002]
[Prior art]
Conventionally, there is an electric razor in which both the net blade 20 and the trimmer blade 5 are disposed at substantially the same height position so that both types of blades can be applied to the skin at the same time. In this electric razor, as shown in FIG. 7, the net blade 20 and the trimmer blade 5 can be simultaneously applied to the skin. In this state, if the electric razor is moved in the direction of arrow A, long hairs and comb hairs are first trimmed. The hair cut by 5 and the hair shortened by cutting with the trimmer blade 5 are cut by the net blade 20 (see, for example, Japanese Patent Laid-Open No. Hei 4-23191).
[0003]
[Problems to be solved by the invention]
However, when the hair is shaved with a conventional electric razor, as shown in FIG. 7, the hair 55 cut by the trimmer blade 5 is between the skin and the skin contact surface 50c on the blade base. Since the hair 55 falls asleep, it is difficult to be introduced into the blade hole on the side surface of the net blade 20, and there is a problem that a large amount of unshaved material remains. Moreover, since the contact area to the skin in the upper part of the blade base of the trimmer blade 5 is large, when the hair 55 is shaved, the frictional resistance increases with the skin, the slippage becomes worse, and the hair 55 is shaved smoothly and quickly. It was impossible.
[0004]
The present invention has been made in view of the above-described conventional problems. The object of the present invention is to provide an electric device that is capable of smoothly and quickly shaving hair while introducing hair and reducing shavings. To provide a razor.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention can move up and down in an electric razor provided with a net blade 20 and a trimmer blade 5 at one end so that both kinds of blades can be brought into contact with the skin at the same time. A skin contact surface 50c is formed on the blade base top 50b of the trimmer blade 5 so as to be positioned between the blade edge of the trimmer blade 5 and the net blade 20, and the skin contact surface 50c is cut by the blade edge of the trimmer blade 5. A plurality of slit holes 41 for introducing the hair into the net blade 20 are formed.
[0006]
Here, the depth L of the slit hole 41 is preferably formed so as to be shallow at the cutting edge side of the trimmer blade 5 and gradually become deeper toward the net blade 20. Further, the width D of the slit hole 41 is preferably formed so as to be wide at the cutting edge side of the trimmer blade 5 and gradually narrow toward the net blade 20.
[0007]
[Action]
According Thus the present invention, the blade base top portion 50b of the vertically movable trimmer blade 5, to form a skin contact surface 50c so as to be positioned between the blade edge and the net blade 20 of the trimmer blade 5,該肌By forming a plurality of slit holes 41 for introducing hair cut by the cutting edge of the trimmer blade 5 into the net blade 20 on the contact surface 50c, the hair cut by the trimmer blade 5 becomes slit holes in the skin contact surface 50c. It gets into the inside of 41, gets up, and becomes easy to be introduced into the next net blade 20. Therefore, since it is possible to prevent the hair from falling between the skin and the skin contact surface 50c of the blade base top 50b as in the past, it is possible to reduce the shaving residue on the net blade 20, In addition, since the contact area between the skin contact surface 50c and the skin is reduced by the slit hole 41, the frictional resistance when shaving hair is reduced.
[0008]
【Example】
Hereinafter, the present invention will be described in detail with reference to the illustrated embodiment. The electric razor used in the present embodiment is of a waterproof type using a dry battery as a power source. First, the overall structure will be described with reference to FIG. The inside 1 is a main body, and a casing is formed by a bottomed cylindrical battery cover 1a, a cylindrical upper housing 1b, and a lid 1d that closes an upper end opening of the upper housing 1b that is directed in an oblique direction. The motor 10 is disposed in the upper housing 1b. A holder 15 having a battery housing portion 13 is connected to the lower end of the upper housing 1b with screws, and the battery cover 1a covers the holder 15. In the figure, 1c is an accent ring mounted on the outer peripheral surface of the upper end of the battery cover 1a, and 16 is provided on the holder 15 and engages with an engagement recess 18 on the inner surface of the battery cover 1a by urging by a spring 17, so that the battery cover 1a. An engagement piece 1g for stopping the water is O-ring for waterproofing.
[0009]
On the front surface of the main body 1, a switch handle 60 that can slide up and down with respect to the main body 1, a lock handle 61 for locking the upward movement (ON operation) of the switch handle 60, A switch 6 including a cam 62 that rotates in accordance with the operation and a contact portion that is turned on and off by the cam 62 is provided.
[0010]
On the other hand, when one end of the main body 1 where the trimmer blade 5 and the net blade 20 are arranged is on the upper side and the other end is on the lower side, the head portion 2 provided obliquely on the upper end of the main body 1 has a rectangular tube shape. Frame 7 and a pair of trimmer blades 5 and 5 disposed on both sides of the net blade 20 and an outer blade 21 (see FIG. The inner blade 22 in the net blade 20, which is composed of 5) and the inner blade 22 that is in sliding contact with the inner surface of the outer blade 21, is connected to the motor 10 via the driver 3. The driver 3 converts the rotational motion of the eccentric shaft 12 with a balancer attached to the output shaft of the motor 10 into reciprocating motion, and causes the inner blade 22 to reciprocate. In the figure, 39 is a push-up spring that urges the inner blade 22 toward the outer blade 21, 1e is a dustproof (waterproof) packing for the penetrating portion of the driver 3 in the lid lid 1d, and 1f is the packing 1e. It is a holding plate for fixing.
[0011]
The head unit 2 will be described in more detail. The frame 7 has a lower edge portion connected to the main body 1 via a hinge, and a slide button 8 is slidably provided on the surface side of one surface. On the inner surface of the frame 7, as shown in FIG. 4, ribs 72, 73, 74 for vertically moving guides of the trimmer blade 5, a shaft 71 for pivotally supporting a trimmer driver 9 described later, A hook 70 for holding the blade 21 and a stopper 75 are formed. The surface on the side where the slide button 8 is provided is provided with a vertically long guide hole between the ribs 73 and 74, and the shaft 71 is also provided with a vertically long guide hole. The shaft 71 is formed on the inner surface of the slide button 8. Projected.
[0012]
On the other hand, the trimmer blade 5 includes a blade base 50, a push-up spring 51, a movable blade 52, a fixed blade 53, a trimmer base 54, and a trimmer driver 9 formed integrally with the trimmer base 54. A fixed blade 53, a movable blade 52, and a push-up spring 51 are mounted between the upper edge and the blade base 50. In FIG. 3, reference numeral 38 denotes a joint connecting the driver 3 and the trimmer blade 5.
[0013]
As shown in FIGS. 1 and 4, a plurality of slit holes 41 are provided in the skin contact surface 50 c of the blade base top 50 b of the trimmer blade 5. The shape of the slit hole 41 will be described in detail. The depth L of the slit hole 41 is shallowest on the cutting edge side of the trimmer blade 5 and gradually becomes deeper toward the net blade 20, as shown in FIG. Further, as shown in FIG. 6, the width D of the slit hole 41 is formed so as to be the widest at the cutting edge side of the trimmer blade 5 and gradually narrow toward the net blade 20.
[0014]
Next, the behavior of the skin and hair 55 when the hair 55 is actually shaved by an electric razor will be described. As shown in FIG. 5, when the electric razor is moved in the arrow direction A, the long hair 55 moves to the trimmer blade 5. Is cut off. Then, the relatively short hair or the hair cut short by the trimmer blade 5 is introduced into a plurality of slit holes 41 provided in the blade base top portion 50b of the trimmer blade 5, and is sent to the net blade 20 while being adjusted. . At this time, the hair 55 cut by the trimmer blade 5 rises in the slit hole 41 and is easily introduced into the net blade 20. Moreover, since the slope L is provided so that the depth L of the slit hole 41 is shallow on the cutting edge side of the trimmer blade 5 and gradually increases toward the net blade 20, the slit hole 41 is tilted until it is introduced into the slit hole 41. The bristle 55 gradually rises in accordance with the depth L of the slit hole 41 and enters the blade hole 43 on the side surface 20a of the net blade 20 and is cut. Moreover, since the width D of the slit hole 41 is formed so as to be wide at the cutting edge side of the trimmer blade 5 and gradually narrow toward the net blade 20, the slit hole 41 faces in multiple directions until it is introduced into the slit hole 41. The hair 55 can be trimmed by the slit holes 41, and the introduction into the net blade 20 becomes smoother. Accordingly, it is possible to prevent the hair 55 from being sandwiched between the skin and the skin contact surface 50c of the blade base top 50b as in the prior art, so that it is possible to reduce unshaved portions on the net blade 20. . In addition, by providing the slit hole 41 in the blade base top 50b, the contact area between the skin contact surface 50c and the skin can be reduced, and the frictional resistance with the skin when the hair 55 is shaved can be reduced. it can. As a result, the introduction of the hair 55 is good and the amount of uncut shaving is reduced, and there is an advantage that even a sweaty part such as a heel can be shaved smoothly and quickly.
[0015]
【The invention's effect】
The present invention as described above, in the electric shaver is to be able to be contacted at the same time the skin of both types of blades provided at one end of the net blades and trimmer blade, blade base of vertically movable trimmer blade On the top , a skin contact surface is formed between the blade edge and the net blade so as to be positioned between the edge of the trimmer blade and the net blade, and the hair cut by the edge of the trimmer blade is applied to the skin contact surface. Since a plurality of slit holes are formed for introduction into the hair, the hair sandwiched between the skin and the skin contact surface on the top of the blade base rises in the slit hole and is easily introduced into the net blade, and the slit The contact area of the skin contact surface of the trimmer blade is reduced due to the formation of the hole, and when the hair is shaved, the frictional resistance between the skin and the skin is reduced, and as a result, the introduction of the hair is good and the remaining shaving is reduced. Smooth hair even in sweaty areas such as An effect that can be and quickly.
[0016]
Here, when the depth of the slit hole is shallow on the cutting edge side of the trimmer blade and is formed so as to gradually become deeper toward the net blade, the hair that has fallen until it is introduced into the slit hole is removed from the slit hole. It can be raised gradually according to the depth, and the introduction to the net blade can be improved to further reduce shavings.
[0017]
When the slit hole is formed so that the width of the slit hole is wider on the cutting edge side of the trimmer blade and gradually decreases toward the net blade, the hair that has been oriented in multiple directions until it is introduced into the slit hole is adjusted by the slit hole. It can be bristled, and the introduction to the net blade is even better.
[Brief description of the drawings]
FIG. 1 is a cutaway front view of an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of the entire electric shaver.
FIG. 3 is a longitudinal sectional view of the head part.
FIG. 4 is an exploded front view of the same as above.
FIG. 5 is a cross-sectional view of the main part for explaining the case where the hair is shaved by the head part.
FIG. 6 is a plan view of the head part.
FIG. 7 is a cross-sectional view of a main part for explaining the case of shaving hair with a conventional head part.
[Explanation of symbols]
5 Trimmer blade 20 Net blade 41 Slit hole 50 Blade base 50b Top 50c Skin contact surface

Claims (3)

In the electric shaver is to be able to contact the net blades and trimmer blade skin of both types of blades provided at one end at the same time, the blade base top of the vertically movable trimmer blade, the cutting edge of the trimmer blade A skin contact surface is formed so as to be positioned between the net blade, and a plurality of slit holes are formed on the skin contact surface for introducing the hair cut by the edge of the trimmer blade into the net blade. Electric razor to do.   2. The electric shaver according to claim 1, wherein the depth of the slit hole is shallow on the cutting edge side of the trimmer blade and gradually increases toward the net blade.   2. The electric shaver according to claim 1, wherein the width of the slit hole is wide on the side of the cutting edge of the trimmer blade and gradually narrows toward the net blade.

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