JPH0645007A - Small-sized electric equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] The power on / off operation and the used battery switching operation can be performed with one finger of the grip hand to improve the operability, and the switching to the auxiliary battery 4 side is regulated. , Prevent the advance use of the auxiliary battery 4. [Configuration] A main switch knob 8 for controlling the timing of energization of a load 2 on the same surface of the main body case 1, and an auxiliary for selectively switching a battery for supplying power to the load 2 to a main battery 3 or an auxiliary battery 4. The switch knob 20 and the switch knob 20 are arranged adjacent to each other. Further, the auxiliary switch knob 20 has a switching position B to the main battery 3 side provided at a position outside the movement operation area A of the main switch knob 8, and a switching position C to the auxiliary battery 4 side located in the area A. It is a transition operation between.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small electric device such as an electric razor and a handy light, and in particular, a main battery used in a normal time and an auxiliary battery used in an emergency when the main battery has a shortage of capacity. , Which are switchable with each other by a switch operation.

[0002]

2. Description of the Related Art Conventionally, an electric shaver having a rechargeable battery as a main battery and a dry battery as an auxiliary battery and a function of selectively using two kinds of batteries is known as a small electric device of this type. As shown in FIG. 5, such an electric razor allows a switch knob 82 provided on the front surface of a main body case 81 to be slidably moved in the vertical direction, and the ON position of the main battery to be on the upper side around the OFF position and the lower position to be on the lower side. Each of the auxiliary batteries has an ON position.

[0003]

However, when the battery is switched by the slide type switch knob 82, the motor is driven in the same manner regardless of whether the switch knob 82 is operated in the up or down direction. Therefore,
Even if you accidentally switch to the auxiliary battery side when the main battery has sufficient capacity, you may continue to use it without being aware that you are using the auxiliary battery.
While repeating such an operation many times, the spare battery is used up first, and when it is desired to use the spare battery, this is inconvenient.

The present invention has been made in view of the above-mentioned problems, and it is possible to prevent prior use of an auxiliary battery without deteriorating the usability and to make it possible to clearly grasp the battery currently in use. The purpose is to provide an electric device.

[0005]

In order to achieve the above-mentioned object, in a small electric device according to the present invention, as shown in the overall structure of FIG. The main switch knob 8 that can be regulated in conjunction with the transfer operation in the movement operation area A, and the auxiliary switch knob 20 that can selectively switch the battery for supplying the load 2 to the main battery 3 or the auxiliary battery 4. And body case 1
Are arranged adjacent to each other on the same surface such as the front side.

Further, the auxiliary switch knob 20 has a switching position B to the main battery 3 side provided at a position deviated from the movement operation area A of the main switch knob 8 and a movement operation area A of the main switch knob 8. It is possible to perform a transition operation between the auxiliary battery 4 side switching position C and the switching position C.

[0007]

With the above structure, when the auxiliary switch knob 20 is normally moved to the switching position B, the main battery 3 is selected as the power source for supplying the load 2, so that the main switch knob 8 is moved. In response to the transfer operation in the operation area A, the energization of the main battery 3 to the load 2 is regulated on and off.

When the capacity of the main battery 3 decreases and the load 2 cannot be driven, the drive power source for the load 2 is supplemented in response to the operation of moving the auxiliary switch knob 20 from the switching position B to C. After switching to the battery 4 side, the load 2 is switched from the auxiliary battery 4 side in conjunction with the operation of the main switch knob 8.
The power supply timing for is regulated.

[0009]

According to the present invention, as described above, the main switch knob 8
Since the auxiliary switch knob 20 and the auxiliary switch knob 20 are arranged adjacent to each other on the same surface of the main body case 1, the respective knobs 8 and 2
0 operation can be easily done with one finger.

Further, the auxiliary battery 4 of the auxiliary switch knob 20
Since the switching position C to the side is provided in the movement operation area A of the main switch knob 8, the main switch knob 8 functions as a restricting means when performing the switching operation of the auxiliary switch knob 20, and moves to the auxiliary battery 4 side. It is possible to prevent unnecessary switching, and to prevent the auxiliary battery 4 from being used up in addition to the main battery 3.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an example of carrying out the electric shaver shown in FIG. 1 and FIG. The electric shaver according to the present invention includes a motor 2 provided as a load, a rechargeable main battery 3 provided as a main power source for the motor 2, and an auxiliary battery using a dry battery as an auxiliary power source inside a main body case 1. 4 and 4 are stored and deployed. Further, an inner blade (not shown) that is oscillated by the output shaft 5 of the motor 2 to reciprocate left and right by a well-known driving means is mounted on the upper part of the main body case 1, and the outer blade is in sliding contact with the inner blade. 6 is detachably attached via a holder 7.

On the front surface 9 side of the main body case 1, the motor 2 is slid up and down in a rectangular movement operation area A.
The main switch knob 8 that enables ON / OFF operation and the auxiliary switch knob 20 that slides left and right to switch between the main battery 3 and the auxiliary battery 4 are arranged adjacent to each other, and A charging plug 10 for the main battery 3 is mounted on the side surface of the lower portion so as to be able to move in and out of the main body case 1. The commercial AC voltage input via the charging plug 10 is stepped down by the transformer of the charging circuit 18 and then rectified by the diode bridge to form a DC voltage for charging, which is applied to both ends of the main battery 3. .

The present invention uses the above-mentioned main switch knob 8 and auxiliary switch knob 20 to provide a switch operating section 12
The feature is in the configuration. The switch operating unit 12 is a normally closed switch contact 24, 25 fixed to the main body case 1.
While the main battery 3 and the auxiliary battery 4 can be switched using the auxiliary switch knob 20, the fixed switch contact 22 composed of the two fixed electrodes 22a and 22b fixed to the main body case 1, and the main switch knob. An on / off switch composed of a movable switch contact 21 fixed to the back side of 8 is used to regulate the power supply timing to the motor 2. That is, the switch contact 25 is connected in series to the negative electrode side of the main battery 3 and the switch contact 24 is connected in series to the positive electrode side of the auxiliary battery 4, and both are further connected in parallel.

The auxiliary switch knob 20 is moved from the switching position B to the main battery 3 side adjacent to the main switch knob 8 to the right in FIG. 2 so as to intersect with the main switch knob 8.
After entering the switching position C to the side of the auxiliary battery 4 provided in the movement operation area A of the main switch knob 8, the inside of the position C can be further shifted upward into an L shape. On the other hand, a notch 2 in which the entire auxiliary switch knob 20 is fitted in a portion that intersects with the auxiliary knob 20 when the main switch knob 8 is off.
6 is provided.

Therefore, only when the main switch knob 8 is at the lower limit position and the switch contacts 21 and 22 are in the ON state, the switching position C of the auxiliary switch knob 20 is opened to enable the lateral shifting operation and the auxiliary switch. When the knob 20 is fitted in the notch 26 of the main switch knob 8, the two are integrated, and as shown in FIGS. 3B and 3C, the main switch knob 8 is operated to move up and down in the moving area A. Move to.

Further, on the lower surface of the auxiliary switch knob 20,
With the auxiliary switch knob 20 shown in FIG. 2 removed from the notch 26 of the switch knob 8, an insulating pin 23 fitted between both electrodes 24a and 24b of the switch contact 24 and turned off,
When reaching the upper limit position shown in FIG. 3 (c) together with the main switch knob 8, both electrodes 25a
And an insulating pin 27 which is fitted between 25b and turned off. Therefore, as a result of interlocking with the horizontal slide operation of the auxiliary switch knob 20, only one of the switch contacts 25 or 24 is turned on selectively, and as a result, the voltage can be taken out from only one of the main battery 3 and the auxiliary battery 4. Becomes

At this time, when the auxiliary switch knob 20 is moved to the left or right to turn on one of the switch contacts 24 and 25, the other switch contact is turned off at the same time as or slightly earlier than the turning-on operation. The batteries 4 are connected in parallel to prevent a current from flowing between them.

Further, the negative electrode side of the batteries 3 and 4 is connected to one fixed electrode 22a, and the positive electrode side is connected to the other fixed electrode 22b via the motor 2. Therefore, by sliding the main switch knob 8 shown in FIGS. 3 (a) and 3 (c) in the upward direction, the electrodes 22a and 22b are short-circuited by the switch contact 21, and the main battery 3 or the auxiliary battery 4 is inserted.
It is possible to energize the motor 2 from either one of them.

FIG. 4 shows another embodiment of the present invention, in which the main switch knob 8 is changed to a push type, and a notch in which a part of the auxiliary switch knob 20 is fitted on the back side of the main switch knob 8. While providing 26, the auxiliary switch knob 20
In addition to the left and right direction, the main switch knob 8 is also pushed in.

With such a configuration, the energization of the main battery 3 to the motor 2 is normally regulated on / off in conjunction with the pushing operation of the main switch knob 8. Here, when the capacity of the main battery 3 is reduced, the auxiliary switch knob 20 is moved to the right and its tip is fitted into the notch 26 of the main switch knob 8, the switch contact 25 is turned off, and the main battery 3 is disconnected. Next, when the main switch knob 8 is pushed, the auxiliary switch knob 20 is pushed together with the main switch knob 8 to turn on the switch contact 24, and the switch contact 2
1.22 is turned on, and the motor 2 is energized from the auxiliary battery 4.

The auxiliary switch knob 20 may be arranged adjacent to the off position side of the main switch knob 8, and the auxiliary switch knob 20 may be configured to move in the same direction as the main switch knob 8. In such a configuration, the main switch knob 8 in the off position has the auxiliary switch knob 20
Block migration operations. However, when the main switch knob 8 moves to the ON position, the switching position C of the auxiliary switch knob 20 provided in the movement operation area A of the main switch knob 8 is opened, and the switching operation of the battery used by the auxiliary switch knob 20 is performed. Is possible.

The main battery 3 and the auxiliary battery 4 described above are also provided.
It is possible to change the types of the rechargeable battery and the dry battery constituting the above, such as exchanging them with each other or using only one of them. Further, the operation mode of the switch knob 8 may be any of a slide type, a push type, a rotary type, or a combination thereof.

[Brief description of drawings]

FIG. 1 is a perspective view showing an overall configuration of an electric shaver embodying the present invention.

FIG. 2 is an electric circuit diagram showing a connection state of switches.

FIG. 3 is an explanatory diagram showing an energization procedure in FIG.
(A) shows an energized state using a main battery, (b) shows an off state when a spare battery is used, and (c) shows an energized state using a spare battery.

FIG. 4 is a cross-sectional view showing another embodiment of the switch operating portion.

FIG. 5 is a front view showing a conventional electric shaver.

[Explanation of symbols] A Main switch knob movement operation area B Auxiliary switch knob main battery side switching position C Auxiliary switch knob auxiliary battery side switching position 2 Motor (load) 3 Main battery 4 Spare battery 8 Main switch knob 12 Switch Operation part 20 Auxiliary switch knob

Claims (1)

[Claims] 1. A main switch knob (8) capable of regulating the timing of energization of a load (2) in conjunction with a transfer operation within a predetermined movement operation area A, and a battery for supplying power to the load (2), The main battery (3) or the auxiliary battery (4) and an auxiliary switch knob (20) that can be selectively switched are arranged adjacent to each other on the same surface of the main body case (1), and the auxiliary switch described above is provided. The knob (20) is located inside the moving operation area A of the main switch knob (8) and the switching position B to the main battery (3) side, which is located outside the moving operation area A of the main switch knob (8). Located in,
A small electric device characterized in that a shift operation between the auxiliary battery (4) side and a switching position C can be performed.