JPS621741B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a battery-powered razor using a dry battery or storage battery as a power source.

Generally, when a battery-powered razor finishes shaving, a switch installed between the motor that drives the movable blade and the battery power supply is opened to stop supplying current to the motor, but when the battery capacity runs out, the movable blade Sometimes people forget to turn off the switch after the razor stops running and leave it unattended. Especially with battery-powered razors that use storage batteries as a power source, if you leave them with the switch closed, the storage battery will deteriorate due to over-discharge, making it difficult to recharge. There was a problem that I couldn't do it. Additionally, there is a generally known mischarging prevention device in which the electrical connection between the motor and the storage battery is opened by the protrusion of the plug blade, but the characteristics deteriorate due to the large increase in the number of parts and the increase in resistance in the circuit. In addition to this, it was not possible to prevent the storage battery from deteriorating due to overdischarge.

The present invention has been provided in view of the above-mentioned problems, and its purpose is to prevent the motor from being used when the battery capacity is exhausted due to electrical connection between the motor and the battery power source that supplies current to the motor. An object of the present invention is to provide a battery-powered razor that prevents the razor from becoming inoperable.

Hereinafter, the present invention will be explained in detail based on examples. In FIGS. 1 to 3, a razor body 1 is made of synthetic resin, and a fixed blade 3 having a plurality of blade holes 2 is removably attached thereto by a mounting tool 4. As shown in FIGS. A blade 7 of a movable blade 6 reciprocated by a motor 5 is in sliding contact with the inner surface of the fixed blade 3. The movable blade 6 is attached to a driver 8, and an eccentric cam 10 attached to the output shaft 9 of the motor 5 is fitted into the driver 8. There is a motor 5 inside the razor body 1.
, a drive element 8 , a first battery power source 11 , which is an example of a storage battery that supplies current to the motor 5 , and a transformer 1 that steps down the input voltage to the first battery power source 11 .
2 and a plug blade 13 electrically connected to the transformer 12. On the front side of the razor body 1, there are a clock means 14, a display means 15 for displaying a signal from the clock means 14, a second battery power supply 16 for supplying current to the clock means 14, and a time and a time displayed on the display means 15. Button 17 for setting and resetting the time
It is equipped with. On the side of the electric shaver 1, a first switch 18 for opening and closing the electrical connection between the motor 5 and the first battery power supply 11, and a second switch 1 for opening and closing the electrical connection between the timer means 14 and the display means 15 are provided.
Contact fitting 20 with one side open and the other side closed with 9
An operating means 21 provided with a slider is provided so as to be freely slidable. FIG. 4 shows a block circuit diagram, in which the plug blade 13 is connected to the primary side of a transformer 12, and the first battery power source 11 is connected to the secondary side of the transformer 12 via a diode 22. Connect the contact a of the first switch 18 to the anode terminal of the first battery power source 11,
The contact b of the first switch 18 is connected to one terminal of the motor 5 to the cathode terminal. The contact c of the second switch 19 is connected to the terminal of the clock means 14, and the contact d of the second switch 19 is connected to the terminal of the display means 15.
are connected. The contacts a, b, c, and d are arranged in pairs in a row, simplifying the structure and improving operability.

Next, the operating state will be explained with reference to FIG. 4. When the contacts a and b of the first switch 18 are closed with the contact fittings 20, current from the first battery power supply 11 flows to the motor 5 to drive the motor 5, while the contacts of the second switch 19 are closed. c,
d is open, so the time is not displayed on the display means 15. When the contacts c and d of the second switch 19 are closed with the contact fittings 20, the display means 15 displays the timer 14.
The time is displayed on the display means 15. On the other hand, since the contacts a and b of the first switch 18 are open, the motor 5 is not driven. The position where the contact fitting 20 closes the contacts a and b of the first switch 18 and the position where the contact fitting 20 closes the contacts c and d of the second switch 19 can be determined by a click action, respectively. This prevents the phenomenon that the motor 5 does not drive and the display means 15 does not display, which is caused by closing the contacts b and c with the metal fitting 20.

In this way, the battery-powered razor according to the present invention is
a motor that slides on a fixed blade provided on the razor body to drive the movable blade; a first battery power source that supplies current to the motor; and a first battery power source that opens and closes an electrical connection between the first battery power source and the motor. a switch, a timer housed in the razor body, a display means for displaying a signal from the timer, a second battery power source for supplying current to the timer, and a timer and a display. The daily clock is characterized by comprising a second switch that opens and closes the electrical connection, and operating means that opens one of the first switch and the second switch and closes the other. Therefore, if the time display is off, you can easily know that the first battery power source and motor are still connected, and it is highly unlikely that the first battery power source and motor will be left in this state, and the battery capacity is low. This has the effect of preventing the situation where the clock becomes completely unusable.Furthermore, there is no need for the clock to function while shaving, so there is no problem even if the clock display is turned off. This has the effect of reducing battery capacity consumption.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a battery-powered razor according to an embodiment of the present invention, Fig. 2 is a partially cutaway front view of the same, Fig. 3 is a partially cutaway side view of the same as the above, and Fig. 4 is the same as the above. FIG. 1...Razor body, 3...Fixed blade, 5...Motor,
6... Movable blade, 11... First battery power source, 14... Timing means, 15... Display means, 16... Second battery power source,
18...first switch, 19...second switch,
21...Operation means.

Claims (1)

[Scope of Claims] 1. A motor that drives a movable blade by slidingly contacting a fixed blade provided on a razor body, a first battery power source that supplies current to the motor, and a connection between the first battery power source and the motor. a first switch for opening and closing an electrical connection; a timer housed in the razor body; a display means for displaying a signal from the timer; and a second battery power source for supplying current to the timer;
It is characterized by comprising a second switch that opens and closes the electrical connection between the timekeeping means and the display means, and an operation means that opens one of the first switch and the second switch and closes the other. A battery-powered razor. 2 One terminal of the first battery power supply, one terminal of the motor, a terminal of the timekeeping means, and a terminal of the display means are arranged in a line as contacts in order, and a slidable operating means is configured to connect and separate these contacts one pair at a time. When one terminal of the first battery power supply and one terminal of the motor are closed, a terminal of the timekeeping means and a terminal of the display means are opened, and one terminal of the first battery power supply and one terminal of the motor are closed. 2. A battery-powered razor according to claim 1, wherein the terminal of the clock means and the terminal of the display means are closed when the terminal is opened.