JPH0343916B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric shaver that is convenient to carry when traveling and is easy to use. More specifically, a blade unit having inner and outer blades is attached to the main body case so that it can be moved in and out, and when carried, the blade unit is compactly stored in the main body case, and when in use, the blade unit can be protruded for ease of use. Furthermore, the drive switch for the inner cutter can be turned on and off by operating the blade unit's extension/retraction control knob, providing excellent operability.In particular, even when the blade unit is extended, the switch can remain in the OFF state, making it easy to clean and replace the inner and outer cutters. The purpose is to make it convenient.

The details will be explained below based on the drawings.

1 to 3 illustrate an electric shaver according to the present invention, and the main body case 1 includes an upper half 1a with an open front and a lower half 1b with an easy-to-grip cylindrical shape connected to the upper half 1a. Become. A rechargeable main battery 2, a spare battery 3, a charging plug 4, and means for egress and egress of these are built into the lower half 1b of the case, and a rotary blade is mounted on the front inside the upper half 1a of the case. A unit 5 is built in so that it can move forward and backward. Then, a blade unit 5 is installed on the side of the main body case 1.
An operation knob 6 for operating the charging plug 4 to move in and out and turn on/off the inner blade drive switch, and a knob 7 for operating the charging plug 4 to move in and out are provided so as to be slidable in the vertical direction.

In FIG. 4, the blade unit 5 includes a housing 9 in which a motor 8 is laterally fitted and supported, a porous screen-shaped outer blade 11 attached to the outer end opening of the housing 9 via a holder 10, and a motor rotating It consists of an inner cutter 14 that is attached to the shaft 12 via a holder 13 and slides into contact with the outer cutter 11, and the entire cutter unit 5 is internally supported within the case upper half 1a so as to be rotatable about the front and rear horizontal axis. Switch ring 1
5, and is supported so as to be slidable in the front and rear directions.

In FIG. 5, the housing 9 of the blade unit 5
On the outer peripheral surface of the switch ring 15, a pair of left and right cam grooves 16 and 17 are formed at symmetrical positions with a phase shift of 180 degrees.
It has pins 18 and 19 that fit into the. One pin 18 also serves as a connecting pin for the operating knob 6 which is inserted and connected to the switch ring 15 from the outside.
The housing 9 is prevented from rotating by engaging with a stopper 20 erected from the inner wall of the upper half 1a of the case, and slides only in the front-rear direction.

front half portions 16a and 17a that are inclined with respect to the axis of the switch ring 15 in the cam grooves 16 and 17;
When the switch ring 15 is rotated by operating the operation knob 6 up and down along the guide groove 21, the cam grooves 16 and 1
The blade unit 5 moves forward and backward with a constant stroke by the cam action of the inclined front half portions 6a and 17a of the blade 7 and the pins 18 and 19.

In the deep inside of the main body case 1, there is a printed wiring board 22 having a circular upper part and a rectangular lower part as shown in FIG.
is arranged, and the circular upper part is the switch ring 15.
There is a slit-shaped opening 23 in the innermost part (see Fig. 5).
has been inserted through. A pair of sliding contact terminals 24 and 2 are provided on the inner surface of the bottom wall portion 15a of the switch ring 15.
4 is fixed, and as the ring 15 rotates, a group of sliding contacts 25 arranged in an arc on the back surface of the substrate 22 are made conductive or disconnected in an appropriate combination.

A pair of terminals 26 and 2 protruding from the back of the motor 8
6 and a pair of contacts 27 and 27 on the printed circuit board 22 side
and are electrically connected by a pair of terminal plates 28 and 28 made of phosphor bronze. That is, this terminal board 28 has
a mounting hole 30 with a bite protrusion that is inserted into and fixed to a mounting boss 29 protruding from the back surface of the motor 8;
It has a terminal connection hole 31 into which the motor terminal 26 is inserted and connected, and an elastically bendable arm 32, and the tip of the arm 32 is inserted into a mounting hole 33 of the printed wiring board 22 and connected to the contact 27. Therefore, even if the blade unit 5 moves forward, the arm 32 of the terminal board 28 expands and deforms as shown in FIG. 8, and the electric circuit between the motor 8 and the power supply side remains connected. .

The switch ring 15 is rotated by the operation knob 6 to simultaneously move the blade unit 5 in and out, stop the motor 8, and turn the inner blade drive switch on and off. That is, the operation knob 6 is
By switching to the four positions a to d shown in the figure, the following is achieved.

(a) Position The pins 18 and 19 are at the base ends of the cam grooves 16 and 17, and the blade unit 5 is retracted. At this time, power to the motor 8 is in an off state.

(b) Position The pins 18 and 19 correspond to the ends of the inclined front half portions 16a and 17a of the cam grooves 16 and 17, and the blade unit 5
is prominent. At this time, the power to the motor 8 remains off.

(c) Location Pins 18 and 19 are located in the rear part 1 of cam grooves 16 and 17.
6b and 17b, and the blade unit 5 remains in the protruding state. The motor 8 is connected to the main battery 2 and is in the on state, which is the normal operating position.

(d) Location Pins 18 and 19 are located in the rear part 1 of cam grooves 16 and 17.
6b and 17b, and the protruding state of the blade unit 5 is maintained. In this case, the motor 8 is connected to the spare battery 3 and is in an on state. This position is used when the main battery 2 cannot be charged in time.

In addition, in FIG. 6, the switch ring 15
Each operation state is a stepped engagement between a slit 34 with a locking step formed on the bottom wall portion 15a of the ring 15 and an elastically deformable locking pin 35 provided upright on the inner inner wall surface of the main body case 1. maintained elastically by Further, each operating state can be confirmed by viewing a display 37 attached to the outer peripheral surface of the extension portion 15b of the switch ring 15 through a display window 36 formed on the side of the knob guide groove 21. Furthermore, as shown in the illustrated example, the on/off stroke of the switch (distance between positions (b) and
(c) distance between positions), the switch can be turned on and off easily and quickly with a short stroke when the blade unit 5 is in the protruding state. In other words, in actual use, you turn it off when checking your beard, then turn it on to shave, then turn it off again after checking your beard, and then switch it on again to shave.In this way, you repeatedly turn the switch on and off. When the stroke is short, it is easier to operate.

The entire details of the illustrated embodiment are as described above.
The present invention is not limited to this. for example,
An AC power source may be used as the power source. The spare battery 3 is not necessarily required, and if the spare battery 3 is omitted, the operation knob 6 will be set at the (c) position at the stroke end position and the (d) position will be omitted. In addition, the specific means for moving the blade unit 5 in and out of the main body case 1 can be freely changed in design as necessary.

As explained above, in the present invention, the blade unit 5 is attached to the main body case 1 so that it can be moved in and out, so that when the blade unit 5 is retracted and not in use, the entire razor is larger than the main body case 1. It can be made small and compact, easily fits into a bag, etc., and is convenient to carry.Also, when in use, the blade unit 5 protrudes from the main body case 1, so the outer blade part can be easily pressed against the skin, making it convenient to use. Easy to use.

Moreover, since the opening and closing of the blade unit 5 and the on/off operation of the drive switch for the inner cutter 14 can be operated with a single dual-purpose operation knob 6, it is easy to use in this respect as well. In particular, since the drive switch for the inner cutter 14 can maintain the OFF state even when the blade unit 5 is protruded at an intermediate position between the OFF position and the ON position of the welding knob 6, the blade unit 5
Inner cutter 14 and outer cutter 1 in the state of protruding
The cleaning and replacement work described in step 1 can be performed easily and safely, and the handling is convenient.

[Brief explanation of drawings]

FIG. 1 is an overall external view showing an embodiment of an electric shaver according to the present invention, FIG. 2 is a front view, FIG. 3 is a side view, and FIG. 4 is a cross-sectional view taken along the - line in FIG.
Fig. 5 is a vertical side view, Fig. 6 is a sectional view taken along the - line in Fig. 5, Fig. 7 is an exploded perspective view of the electric circuit structure for the motor, and Fig. 8 is a side view showing the motor drive section when the blade unit is protruded. It is a diagram. 1...Body case, 2...Battery, 5...Blade unit,
6...Operation knob, 8...Motor, 11...Outer blade, 14...
Inner blade.

Claims (1)

[Claims] 1 A blade unit 5 having an outer cutter 11 and an inner cutter 14 in sliding contact with the outer cutter 11 is attached to the main body case 1 equipped with a driving means for the inner cutter 14 so as to be freely retractable. 5. Ingress/egress operation and inner blade 1
A single operation knob 6 is provided for turning on and off the drive switch 4.
The drive switch can be freely switched between the OFF position and the ON position, and in the OFF position, the blade unit 5 is retracted, and in the intermediate position between the OFF position and the ON position, the drive switch remains OFF. An electric razor that is made to protrude.