JPS6060881A - Electric shaver - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electric shaver using a primary battery or a secondary battery as a power source.

[Technical disadvantages of the invention and its problems] Since this type of electric shaver has a limited power supply battery, it is necessary to know how long the battery lasts in order to use it. However, conventional electric shavers simply count and display the number of times the power switch is activated, and this has the problem of not being able to correspond to the usable time, making it impossible to predict how much time the shaver has left.

[Object of the Invention] The present invention was made to solve such problems, and an object of the present invention is to provide an electric shaver that can reliably know the remaining usable time.

[Summary of the Invention] This invention, in response to the turning on of a power switch, counts the reference pulse from the reference pulse generator during the turning on period of the switch with a time measuring device to measure the cumulative time, and calculates the cumulative measurement time. is displayed on the display.

Further, the present invention deals with time measurement after clearing the measured value of the time measuring device when replacing the primary battery or secondary battery.

Roughly speaking, this invention also makes it possible to measure and display the time.

[Embodiments of the invention] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, in response to the on/off operation of a power switch (not shown), the primary battery 1 supplies power to a shaving motor (not shown) that drives the blades. A reference pulse generator 3 is connected via an on/off switch 2 that operates on and off, and a time measuring device 5 is connected via an on/off contact 4 of an operating switch (to be described later) that is turned on when the primary battery 1 is filled and turned off when removed. and a display drive circuit 6 are connected. The reference pulse generator 3 includes an oscillator 7, such as a crystal oscillator, and a frequency divider 8 that divides the frequency of the oscillation pulse of the oscillator 7, and generates a reference pulse with a period of one second. The time measuring device 5 is 1/6
0 divider 9 and three 1/10 dividers 10, 11.12
The 1 second reference pulse from the reference pulse generator 3 is divided into 1 minute pulses by the 1/60 frequency divider, and the pulses are further divided into 1 minute pulses by the 1/10 frequency divider 10.
The 1/10 frequency divider 11 supplies the 1/10 frequency pulse to the 1/10 frequency divider 12 as a 100 minute pulse. The time measuring device 5 has respective 1/10 frequency dividers 10 and 11.
．． Twelve outputs are supplied to the display drive circuit 6, respectively. The display device drive circuit 6 includes three display device drive circuits 13, 14, and 15, and the 1/10 frequency divider 10.
The output of 1/10 is input to the display element drive circuit 13, and
The output of the frequency divider 11 is input to a display element drive circuit 14, and the output of the 1/10 frequency divider 12 is input to a display element drive circuit 15. The display drive circuit 6 drives an integrated time display 16. This display 16 consists of three-digit segment display elements 17, 18, and 19, and the display element drive circuit 13 drives the display element 19. The display element driving circuit 14 drives the display element 18, and the display element driving circuit 15 drives the display element 17. FIG. 2 is a perspective view showing how the case 20 of the electric shaver is filled with the primary battery 1. An activation switch 21 is provided in the filling part of the battery 1, and when the battery 1 is taken out, it is shown in FIG. As usual, when the bottle 22 is in the state shown, the opening/closing contact 4 is turned off, and when the battery 1 is being filled, the bottle 22 is pushed against the side of the battery 1, as shown in FIG. 4, and the opening/closing contact 4 is turned on. .

In the device according to the embodiment of the present invention having such a configuration, the battery 1
is removed from the case 20, the opening/closing contact 4
is off, so the time measuring device 5 and the display drive circuit 6
No power is supplied to the circuits 5 and 6, and both circuits 5 and 6 are in a clear state. Therefore, when the battery 1 is filled and the switching contact 4 is turned on, the display on the display 16 becomes rOJ for each digit. In this state, when the power switch is turned on to drive the shaving motor, the open/close switch 2
is turned on, and the operation of the reference pulse generator 3 is started. A reference pulse is then supplied from the reference pulse generator 3 to the time measuring device 5 every second. However, in the time measuring device 5, 1/
A pulse is output from the 60 frequency divider 9 every minute, and 1/10
The frequency divider 1o converts this pulse into 1~1 and outputs a time count signal to the display element driver 8 circuit 13 every minute. In addition, the 1/10 frequency divider 11 counts the pulses output from the frequency divider 10 every 10 minutes, outputs a time count signal to the display element drive circuit 14 every 10 minutes, and divides the frequency by 1/10. The device 12 counts the pulses output from the frequency divider 11 every 100 minutes and outputs a time count signal to the display element drive circuit 15 every 100 minutes. In this way, as long as the open/close switch 2 is on, the time measuring device 5 counts the time in units of one minute and displays it on the display 16. When the open/close switch 2 is turned to A, the output of the reference pulse from the reference pulse generator 3 is stopped, and the operation of the time measuring device 5 is stopped. However, since the opening/closing contact 4 is on, the time count value of the time measuring device 5 is maintained as it is.

Therefore, the next time the opening/closing switch 2 is turned on, the time measuring device 5 starts counting from that count value. Thus, the display 16 displays the cumulative time since the primary battery 1 was replaced. Therefore, if you know in advance how much time the battery can be used for, you can know for sure how much time is left.Also, when replacing the battery, the timer 5 and display 16 will return to zero. Because
The display content of the display 16 always shows the accumulated usage time of a new battery that has been replaced, and it is possible to ensure correspondence with the battery. Next, another embodiment of the present invention will be explained with reference to the drawings. Note that the same parts as in the above embodiment are given the same reference numerals, and detailed explanations will be omitted.

As shown in FIG.
The reference pulse is supplied to the time measuring device 23, and is also supplied to the time measuring device 5 via an on/off switch 25 that turns on and off in response to the on/off operation of the power switch. The time measuring device 23 is a 1/60 frequency divider 26
．． 1/10 frequency divider 27. 1/6 frequency divider 28. Consists of 1/10 frequency divider 29 and 1/2 frequency divider 30.
The 1-second pulse from the reference pulse generator 3 is sent to Curran 1 by the 0 frequency divider 26 to create a 1-minute pulse, and then the 1/10 frequency divider 27
A 10 minute pulse is created by the 1/6 frequency divider 28, a 60 minute or 1 hour pulse is created by the 1/6 frequency divider 28, and a 10 hour pulse is created by the 1/10 frequency divider 29. and each frequency divider 27.2
At the time of 8.29.30, the output is being supplied to the display drive circuit 24. The display device drive circuit 24 includes four display device drive circuits 31, 32, 33, and 34, and the time count signal from the time measurement device 23 is input to the four segments of the time display 35. Suko 36.37
．． 38 and 39 respectively. In other words, the display element drive circuit 31 divides the 1/10 frequency divider 27 to 1
The display element driving circuit 32 receives a time count signal every minute and controls the display element 39 to display, and the display element drive circuit 32 receives a time count signal every 10 minutes from the frequency generator 28 and controls the display element 38 to display. The display element drive circuit 33 is a 1/10 frequency divider 29
Display element 37 receives hourly time count signals from
The display element drive circuit 34 controls the display of the 1/2 frequency divider 3.
The display element 36 is controlled to display in response to a time count signal every 10 hours from 0 to 10 hours. In addition, in the time measuring device 23, a 1/10 frequency divider 29 counts two hours,
And when the 1/2 frequency divider 30 counts 10 hours, each frequency divider 26, 27, 28, 29, 30 is reset and counts the reference pulse from the reference pulse generator 3 again, so-called 12 hours. It is a personal watch.

With this configuration, the time measuring device 5 performs the reference pulse counting operation only when the open/close switch 25 responsive to the power switch is turned on, so that it can count the accumulated usage time of the battery 1 in the same manner as in the above embodiment. Can be done. On the other hand, the time measuring device 23 counts the constantly changing time, and the time display 35 displays the time. In this way, you can also know the time.

In the above embodiment, the cumulative time display 16 and the time display 35 are provided separately, but the invention is not limited to this.
5 may be used as a common display, and the accumulated usage time and time may be selectively displayed on this display.

Furthermore, although the above embodiments have all been described using primary batteries, the invention is not necessarily limited to this, and a rechargeable secondary battery may also be used. In this case, a means for stepping down and rectifying the commercial AC power supply and charging the secondary battery is built in, and a plug 40 connected to the AC power supply is slidably provided inside the case 20 as shown in FIG. When the plug 40 is protruded outside for charging as shown in FIG. 7, the opening/closing contact 4 of the operating switch 21 is turned off, and when the plug 40 is stored in the case 20 after charging is completed, as shown in FIG. 8. The opening/closing contact 4 may be turned on at the same time. Alternatively, an AC adapter may be used instead of the plug, and in this case, the activation switch may be operated by connecting the adapter.

[Effects of the Invention] As described in detail below, according to the present invention, it is possible to provide an electric shaver that can reliably know the remaining usable time.

Further, according to the present invention, it is possible to provide an electric shaver that can also display the normal time and is highly practical.

[Brief explanation of the drawing]

1 to 4 show one embodiment of the present invention, in which FIG. 1 is a block diagram, FIG. 2 is a perspective view showing the filling state of the primary battery and the activation switch, and FIGS. The figure is a partially enlarged view showing the movement of the actuation switch. Figures 5 to 8 show other embodiments of the invention. Figure 5 is a block diagram, and Figure 6 is a block diagram.
The figure is a perspective view showing the relationship between the power plug and the operating switch when using a secondary battery.
It is a partially enlarged view showing the movement of the actuation switch in the figure. DESCRIPTION OF SYMBOLS 1... Primary battery, 2... Open/close switch, 3... Reference pulse generator, 5... Time measuring device, 6... Display drive circuit, 16... Accumulated time display. Applicant's agent Patent attorney Takehiko Suzue

Claims (4)

[Claims] (1) In an electric shaver that is provided with a primary battery or a secondary battery and drives a shaving motor in response to turning on a power switch, the electric shaver includes a reference pulse generator and a power switch for the same in response to turning on the power switch. during the input period of M! from the reference pulse generator. An electric shaver characterized by comprising: a time measuring device that integrally measures time by counting 1B pulses; and a cumulative time display that displays the cumulative time of the time measuring device. (2) In an electric shaver that is provided with a primary battery or a secondary battery and drives a shaving motor in response to turning on a power switch, the reference pulse generator and the primary battery are replaced or the secondary battery is charged. In response to the turning on of the actuating switch, which is switched at a certain time, and the turning on of the power switch, the period of turning on the power switch, the reference pulse from the reference pulse generator is counted and the time is integrated, and the switching of the actuating switch is An electric shaver comprising: a time measuring device whose measured value is cleared in response to operation; and a cumulative time display displaying the cumulative time of the time measuring device. (3) In an electric shaver that is equipped with a primary battery or a secondary battery and drives a shaving motor in response to turning on a power switch, the electric shaver operates using a battery separate from the primary battery or secondary battery as a power source. a reference pulse generator; a time measuring device that, in response to the turning on of the power switch, counts the reference pulses from the reference pulse generator during the turning on period of the power switch and measures the time in an integrated manner; and the time measuring device; an integrated time indicator that displays the integrated time of the reference pulse generator, a time measuring device that visually measures the time by counting the reference pulses from the reference pulse generator, and a time indicator that displays the measured time of the time measuring device. An electric shaver comprising: (4) In an electric shaver that is equipped with a primary battery or a secondary battery and drives a shaving motor in response to turning on a power switch, the electric shaver operates using a battery other than the primary battery or secondary battery as a power source. a reference pulse generator, a time measuring device that, in response to the turning on of the power switch, counts the reference pulses from the reference pulse generator and integrally measures the time during which the power switch is turned on; and the reference pulse generator. a time measuring device that measures time by counting reference pulses from a time measuring device; a display device; and a selection means for selectively displaying the cumulative time of the time measuring device and the time of the time measuring device on the display device. An electric shaver comprising: