JP3963283B2 - Rotary electric razor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary electric razor, and more particularly to an improvement of a grip portion of a rotary electric razor.
[0002]
[Prior art]
In a rotary electric razor, a main body case having a rotary inner blade and an outer blade on the upper portion houses a motor, a drive transmission mechanism that transmits rotation of the motor to the rotary inner blade, a battery, a wiring board, and the like, and as a grip portion Although used, any of the main body cases has a cross-sectional shape of a single cylinder such as a polygon, a circle, or an ellipse. Then, measures are taken to prevent drop-off by making the surface of the grip portion of the main body case uneven or attaching a non-slip plate. In addition, this type of rotary electric razor is structurally low-vibration compared to the so-called reciprocating electric razor, in which a kamaboko type inner blade is reciprocated at high speed by a vibrator that converts motor rotation into reciprocating vibration. Excellent in terms of low noise.
[0003]
[Problems to be solved by the invention]
However, in the grip part of the main body case formed in a single cylinder shape, the entire circumference is gripped by hand, but it is particularly thick and large and heavy, and the razor blade unit is under the chin. It is difficult to grip the main body case when using it while moving it back and forth so as to move along the unevenness of the face, and it is difficult to select a variation in gripping method, and it may be difficult to grip especially for people with small hands. In addition, noise generated from the motor and drive transmission means accommodated in the internal space of the cylindrical main body case increases the noise because the internal space of the main body case becomes a so-called resonance space. There was also a limit to reducing this. Furthermore, in the rotary electric shaver, when the outer blade is pressed against the skin, in order to improve the adhesion between the inner surface of the outer blade and the blade tip of the rotary inner blade, and the familiarity, A structure in which the motor that drives this and the drive transmission means are integrally combined and supported so as to be movable up and down with respect to the main body case is conceivable. The blade and the rotary inner blade need to be configured to move smoothly up and down without being twisted with respect to the main body case.
[0004]
An object of the present invention is to solve such a problem, and by making a shape modification to the grip portion of the main body case, it is possible to achieve a gripping method that can be gripped more reliably, and further, a user's hand. It is to provide a convenient rotary electric shaver that can be gripped according to the size and preference of the. Another object of the present invention is to provide a rotary electric shaver that can reduce noise generation. A further object of the present invention is to provide a rotary electric razor that can maintain good adhesion between the outer blade and the rotary inner blade even when pressed against the skin, thereby improving the sharpness.
[0005]
[Means for Solving the Problems]
The present invention includes a pair of left and right vertically long cylindrical portions 4 and 5 that are opposed to each other via a through hole portion 6 through which a plurality of vertically long grip fingers penetrating in the front-rear direction as shown in the figure can be inserted. A main body case 1 formed in a substantially U shape in a front view so as to have a horizontal cylindrical portion 7 communicating with the lower end portions of the cylindrical portions 4 and 5, and protrudes upward from the upper ends of the vertically long cylindrical portions 4 and 5. A pair of left and right opposing support walls 16, 17, a rotary inner blade 9 that is rotatably supported around the horizontal axis 19 between the opposing support walls 17, 17, and an outer blade 10 that covers the rotary inner blade 9 are provided. The motor 11 and the drive transmission mechanism 12 for transmitting the rotation of the motor 11 to the rotary inner blade 9 are accommodated in one of the vertically long cylindrical portions 4 and 5.
[0006]
In the present invention, at least the opposing support walls 16 and 17, the rotary inner blade 9, the motor 11, and the drive transmission mechanism 12 are integrally combined to form the floating unit 8. A sliding portion 18 that moves up and down along the through-hole portion 6 formed between the vertically long cylindrical portions 4 and 5 is provided in a part of the floating unit 8. It is characterized by being.
[0007]
[Action]
In the ordinary gripping method for gripping the entire circumference of the left and right vertical cylindrical portions 4 and 5 of the main body case 1, the abdominal surface of the fingertip of the gripping hand can be hooked into the through hole portion 6 as shown in FIG. It becomes difficult to remove. In addition, when the through-hole portion 6 is formed to have a width so that a finger can be inserted, for example, as shown in FIG. 4, the vertically long cylindrical portion 5 having a small diameter on one side from the through-hole portion 6 of the main body case 1 may be strongly gripped. it can. In addition, it is possible to provide a variety of gripping methods, such as preventing removal by hooking only one or several fingers of the gripping hand into the through-hole portion 6.
[0008]
By accommodating the motor 11 and the drive transmission mechanism 12 which are noise generation sources in one of the left and right vertically long cylindrical portions 4 and 5, the resonance space can be reduced and noise generation in the main body case 1 can be reduced.
[0009]
The floating unit 8 formed by integrally combining at least the opposing support walls 16, 17, the rotary inner blade 9, the motor 11, and the drive transmission mechanism 12 is stable in the vertical direction by placing the slide portion 18 along the through-hole portion 6. And it can be moved smoothly.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. 1 to 3, 1 is a main body case, 2 is a razor blade unit, and the grip portion 3 below the razor blade unit 2 of the main body case 1 is formed in a substantially U shape in a front view, and is opposed to the left and right sides. A pair of vertically long cylindrical portions 4 and 5 made of plastic, and a through hole formed between the opposing surfaces of the vertically long cylindrical portions 4 and 5 so as to penetrate in the front-rear direction so that a plurality of fingers can be inserted vertically And a horizontal cylindrical portion 7 in which the lower end portions of the vertically long cylindrical portions 4 and 5 are connected in an internal communication state. The main body case 1 constituting the vertically long tube portions 4 and 5 and the horizontal tube portion 7 is formed by integrally abutting front and rear split type front and rear cases 1a and 1b. The razor blade unit 2 provided between the upper end portions of the left and right vertically long cylindrical portions 4 and 5 includes a rotary inner blade 9 and a mesh-like outer blade 10.
[0011]
A motor 11 and a drive transmission mechanism 12 including a multi-stage gear for transmitting the rotation of the motor 11 to the rotary inner blade 9 are accommodated in one of the left and right vertically long cylindrical portions 4 and 5, and the rechargeable battery is disposed on the other side. 13 is stored.
A chassis 14 is incorporated into the main body case 1 via a push-up spring member 15 disposed on the inner bottom of the horizontal cylinder portion 7 so as to be movable up and down. The chassis 14 as a whole is substantially in front view so as to have left and right side chassis 14a and 14b respectively disposed in the left and right vertically long cylindrical parts 4 and 5 and a lower chassis 14c disposed in the horizontal cylinder part 7. It is formed in a U shape. The battery 13 is mounted on the left side chassis 14a, and the motor 11 and the drive transmission mechanism 12 are mounted on the right side chassis 14b. The push-up spring member 15 is interposed between the lower chassis 14 c and the inner bottom of the horizontal cylinder portion 7.
[0012]
Opposite support walls 16 and 17 projecting from the upper end openings of the left and right vertically long cylindrical portions 4 and 5 are integrally provided at the upper ends of the left and right side chassis 14a and 14b. The rotary inner blade 9 is supported so as to be rotatable around the horizontal axis 19. The horizontal shaft 19 on the right side of the rotary inner blade 9 is connected to the motor 11 by the drive transmission mechanism 12. The circuit board 20 is integrally joined to the chassis 14.
[0013]
The opposing support walls 16 and 17, the outer blade 10, the rotary inner blade 9, the motor 11, the drive transmission mechanism 12, the battery 13 and the circuit board 20 are mounted on one chassis 14 so that they are integrally combined and floated. The unit 8 is configured. The floating unit 8 supports the main body case 1 so as to be movable up and down. At this time, the circuit board 20 is notched along the through-hole portion 6 between the vertically long cylindrical portions 4 and 5. As a result, the slide portion 18 is formed on the circuit board 20, and the slide portion 18 is slidable in the vertical direction along the inner surfaces of the through hole forming walls 4 a and 5 a facing the through hole portion 6.
[0014]
An AC / charging power supply socket 21 or a charging-dedicated plug is fixed to one side of the horizontal cylinder portion 7, and the power supply socket 21 and the circuit board 20 are flexible so as to correspond to the vertical movement of the floating unit 8. And a lead wire 22 having a sufficient length and margin.
[0015]
A power switch 23 for starting / stopping the motor 11 is provided in a portion facing the through hole portion 6 of the left vertical tube portion 4 or the right vertical tube portion 5. At this time, since the power switch 23 is arranged in the through-hole portion 6 and hardly receives external force, for example, the switch knob 23a of the power switch 23 protrudes from the main body case 1 with a thin wire material as shown in FIG. It is hard to break even if you let it. In such a case, when the ball portion 23b is attached to the tip of the switch knob 23a, the ball portion 23b can be shown to the user as if it floats in the through-hole portion 6, and the design value can be increased.
[0016]
In the above configuration, when shaving, either a normal gripping method having the entire circumference of the grip portion 3 of the main body case 1 or a gripping method of inserting a finger through the through hole portion 6 can be selected. In the case of a normal grip, as shown in FIG. 4, the abdominal surface of the finger end of the gripping hand can be hooked into the through hole portion 6 so that it is difficult to remove. At that time, as shown in FIG. 2, if the front opening end 6a and the rear opening end 6b of the through-hole portion 6 of the vertically long cylindrical portions 4 and 5 are rounded, the abdominal surface of the finger end is likely to rest, It can be gripped more reliably.
[0017]
In the case of a gripping method in which a finger is inserted through the through-hole portion 6, the finger is inserted into the through-hole portion 6 as shown in FIG. 5, and the left vertical tube portion 4 or the right vertical tube portion 5 is gripped. 4 or the vertically long cylindrical portion 5 is thinner than the overall diameter of the grip portion 3, so that it can be easily gripped and can be firmly gripped. At that time, if a motor 11 for driving the razor blade is incorporated in one of the left and right vertically long cylindrical portions 4 and 5 and a battery 13 is incorporated in the other, the finger is inserted into the through-hole portion 6 and either Even when the vertically long cylindrical portion 4 or 5 is gripped, the balance of weight balance can be maintained and it is easy to hold. Further, if the upper portion of the through-hole portion 6 is formed so as to expand upward and the wide portion 6c is provided, a finger inserted through the wide portion 6c can be easily moved in the left-right direction. If a switch 23 or the like is provided, it is easy to operate.
[0018]
When the outer blade 10 is pressed against the skin during shaving, the outer blade 10 and the rotary inner blade 9 are moved down together with the floating unit 8 and are moved up by the push-up spring member 15 as the pressing is released. When the floating unit 8 moves up and down, the floating unit 8 is not only guided between the opposing support walls 16 and 17 and the upper end openings of the vertically long cylindrical portions 4 and 5, but the slide portion 18 is 5 is guided up and down along the inner surfaces of the through-hole forming walls 4a and 5a facing the through-hole portion 6 of the fifth. Thus, by using the through-hole portion 6 for the upper and lower guides of the floating unit 8, the floating unit 8 is twisted or rattled in the main body case 1 even if a strong pressing force from the skin acts on the floating unit 8. And can be moved up and down smoothly. In this connection, the gaps between the opposing support walls 16 and 17 and the upper end openings of the vertically long cylindrical portions 4 and 5 are closed by a flexible hair stopper plate such as rubber.
[0019]
If the power switch 23 is disposed in the wide portion 6c in the through-hole portion 6 or in a place other than the wide portion 6c, as described above in the case of a normal gripping method having the entire circumference of the grip portion 3 of the main body case 1, In addition, it is possible to prevent an erroneous operation in which the palms and fingertips of the hands gripping the outer circumferences of the left and right vertical cylindrical portions 2 and 3 inadvertently touch the power switch 23. A razor blade unit 2 is provided between the upper portions of the left and right vertical cylindrical portions 4 and 5, and the lower cylindrical portions 4 and 5 are connected to each other by a horizontal cylindrical portion 7 to be rigid. 5 can withstand strong grip. Note that the on / off operation mode of the power switch 23 may be a push type or a slide type other than the one shown in the illustrated example that can be tilted up and down, front and rear, or left and right.
[0020]
In the above embodiment, the through-hole portion 6 is formed to be wide enough for a finger to enter, but instead, the through-hole portion 6 may be formed to a thin width that does not allow a finger to enter as shown in FIG. In the midway portion in the vertical direction of the through-hole portion 6, there is provided a bore portion 26 on which the abdominal surface of the finger end is likely to rest.
[0021]
A plate 24 is integrally mounted on the upper end of the through-hole portion 6 of the main body case 1 as shown in FIG. 1, and the plate 24 is fixed to a mirror, a wall W or the like with a suction cup 27 as shown in FIG. It can be hooked on 28 mag. The plate 24 can also be used for a name plate or the like for marking a product name, for example.
In the main body case 1, the through-hole portion 6 can be provided to be deviated leftward or rightward from the center in the left-right direction of the grip portion 3 to form left and right vertically long cylindrical portions 4, 5 having different width dimensions.
[0022]
In the above embodiment, the floating unit 8 mounts the opposing support walls 16, 17, the outer blade 10, the rotary inner blade 9, the motor 11, the drive transmission mechanism 12, the battery 13, and the circuit board 20 on one chassis 14. Of these, the outer blade 10 is provided separately from the floating unit 8 so as to be floatable with respect to an outer blade holder that is detachably attached to the upper portion of the main body case 1, and the battery 13 and The circuit board 20 can also be fixed and fixed inside the main body case 1 separately from the floating unit 8. In the above-described embodiment, the slide portion 18 of the floating unit 8 is provided on the circuit board 20 itself, but it can be provided on the chassis 14 instead.
[0023]
【The invention's effect】
According to the present invention, the main body case 1 is formed with a vertically long through-hole portion 6 penetrating in the front-rear direction. Therefore, the abdominal surface of the fingertip of the gripper can be hooked on the through-hole portion 6 and can be gripped safely and securely without being removed. In addition, when taking a grip method of inserting a finger through the through-hole portion 6, a person with a small hand strongly grips the narrow cylindrical portion 4 (or 5) having a small diameter on one side from the through-hole portion 6 of the main body case 1. Can be held more securely.
[0024]
Since the inner blade driving motor 11 and the drive transmission mechanism 12 are housed in one of the left and right vertical cylindrical portions 4 and 5 facing each other through the through-hole portion 6, the resonance space is reduced to reduce the resonance space. The noise generation within 1 can be reduced.
[0025]
The floating unit 8 formed by integrally combining at least the opposing support walls 16, 17, the rotary inner blade 9, the motor 11, and the drive transmission mechanism 12 is stable in the vertical direction with the slide portion 18 along the through-hole portion 6. It can be moved smoothly. Therefore, the outer blade 10 and the rotary inner blade 9 can be smoothly moved up and down without being squeezed against the main body case 1 regardless of skin pressing from any direction. The adhesion of the inner blade 9 can be maintained well and the sharpness can be improved.
[0026]
The through-hole portion 6 can be used in a space for storing a container containing lotion, a hair brush, etc., during shipping and packaging, and when storing and storing after use. Can also be used. In addition, the through-hole portion 6 can be innovative in design.
[Brief description of the drawings]
FIG. 1 is a front view of a rotary electric shaver.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is an exploded perspective view.
FIG. 4 is a front view showing a normal method of gripping a rotary electric razor.
FIG. 5 is a front view showing another way of gripping a rotary electric razor.
FIG. 6 is a front view of a rotary electric shaver showing another embodiment.
FIG. 7 is a side view showing a state in which a rotary electric shaver is hooked on a wall or the like in a partially broken state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body case 2 Shaving blade unit 3 Gripping part 4 * 5 Long cylindrical part 6 Through-hole part 8 Floating unit 9 Rotary inner blade 10 Outer blade 11 Motor 12 Drive transmission mechanism 13 Battery 16 * 17 Opposite support wall 18 Slide part 19 Horizontal axis

Claims (2)

By matching the longitudinal case 1a-1b before the second half split integrally, a pair of left and right longitudinal tube portions 4 and 5 facing each through upper and lower vertically elongated through hole 6 penetrating in the blow-like in the longitudinal direction And a main body case 1 formed in a substantially U shape in a front view so as to have a horizontal cylindrical portion 7 that communicates the lower end portions of the vertically long cylindrical portions 4 and 5;
It has left and right side chassis 14a and 14b arranged in the left and right vertically long cylinder parts 4 and 5, respectively, and a lower chassis 14c arranged in the horizontal cylinder part 7 and is generally U-shaped in front view. A chassis 14 formed in
A pair of left and right opposing support walls 16, 17 provided at the upper ends of the left and right side chassis 14 a, 14 b and projecting upward from the upper end openings of the vertically long cylindrical parts 4, 5, and between the opposing support walls 16, 17 A rotary inner blade 9 that is rotatably supported around the horizontal axis 19 and an outer blade 10 that covers the rotary inner blade 9.
A rotary electric shaver characterized in that a motor 11 and a drive transmission mechanism 12 for transmitting the rotation of the motor 11 to the rotary inner blade 9 are accommodated in one of the vertically long cylindrical portions 4 and 5. The opposing support walls 16, 17, the outer blade 10, the rotary inner blade 9, the motor 11 and the drive transmission mechanism 12 are integrally combined on the chassis 14 to constitute the floating unit 8. It is supported so that it can move up and down with respect to the inside.
The slide unit (18) is provided at a part of the floating unit (8) so as to move up and down along the through-hole portion (6) formed between the vertically long cylindrical portions (4, 5). Rotary electric razor.

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