JPH026596Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a small electric device, and particularly to a small electric device that includes a plurality of batteries and supplies power from each battery to a load individually.

To provide a spare battery in addition to the battery that is conventionally used as a battery for driving the load during normal operation, so that when the main battery runs out of capacity, it is possible to supply power from the spare battery to the load by flipping a switch. in,
BACKGROUND ART Small electric devices have been proposed that allow continuous use of the device without worrying about the remaining capacity of the main battery. However, these batteries have the main and spare batteries integrated inside the main body case, and can only be switched between the two batteries by operating a switch, so it is often the case that the switch is operated incorrectly or the battery is switched to the spare battery side. I had a problem where I forgot to use the battery and used up the spare battery.

The present invention has been made with attention to this fact, and includes a plurality of batteries, each of which can individually supply power to a load, and at least one battery is housed in a battery case. By making the battery case detachable from the main body case equipped with a load, and by making it possible to switch the battery that drives the load when the battery case is connected to the main body case, the battery switching operation can be performed reliably, and the battery The purpose is to make it easy to replace.

Hereinafter, the present invention will be specifically explained based on embodiments shown in the drawings.

The drawing shows an example in which the present invention is applied to an electric shaver, but the present invention is not limited to this; it can also be applied to a tape winder,
It goes without saying that the present invention is effective when applied to various small electric devices such as flashlights.

1 to 3, an electric shaver 1 according to the present invention is provided with a removable outer cutter 3 on the upper part of a main body case 2, and an inner cutter 4 is inscribed in the outer cutter 3 and reciprocates. A motor (load) 5 for reciprocating the inner cutter 4 and a first battery 6 for supplying power to the motor 5 are built into the main body case 2.
The driving timing of the motor 5 is regulated by pressing a main knob 9 provided on the front surface 7 of the motor.

The present invention is characterized in that a second battery 10 is provided in addition to the first battery 6 described above for driving the motor 5, and the second battery 10 is detachable from the main body case 2.

The second battery 10 is housed in a substantially rectangular battery case 11 that is large enough to accommodate the second battery 10. The battery case 11 has the same thickness as the main case 2, and has first and second two-wire plugs 13, 14 protruding from the proximal end surface 12 of the case 11, as shown in FIG. The negative pole of the two batteries 10 is connected to the outer wire side of the first plug 13, and the positive pole is connected to the core wire and outer wire side of the second plug 14, respectively.

A battery storage part 16 is recessed in the side surface 15 of the main body case 2 so as to match the battery case 11, and when the battery case 11 is fitted into the battery storage part 16, the circumferential surface of the main body case 2 and the battery case 11 are recessed. It becomes flush with the surrounding surface. Further, on the circumferential surface of the battery storage portion 16, on the abutting surface 17 with the proximal end surface 12 of the battery case 11, corresponding to the protruding positions of the first and second plugs 13, 14 on the battery case 11 side, respectively, are provided. First and second jacks 19, 20 are provided. 2nd jack 2
0 is equipped with a switch 21, through which the negative terminal of the first battery 6 is connected to one end of the motor 5, and the positive terminal of the first battery 6 is connected from the first jack 19 to the main switch 18. The other end of the motor 5 is connected to the other end of the motor 5 through the other end.

As shown in Figs. 1 and 2, the battery case 1
1 removed from the main body case 2, grasp the part of the battery storage part 16 whose circumference is short,
By pressing the main knob 9, the electric shaver 1 can be handled stably.

Next, when expropriating the device 1 outside the home, such as when traveling, the main body case 2 and the side surface 15 of the battery case 11,
Align the mark 23 provided on 22 and remove the battery case 1.
1 into the main body case 2, the second battery 10 is not connected to the motor drive circuit as shown in FIG.
Only the first battery 6 is still the main switch 18
It becomes possible to connect to the motor 5 via.

If the first battery 6 continues to be used and the capacity of the battery 6 runs out, remove the battery case 11 from the main body case 2, turn it upside down, and place it in the storage section.
6, the first battery 6 is inserted as shown in Figure 3b.
is disconnected from the motor drive circuit, and power can now be supplied to the motor 5 from the second battery 10, allowing the motor 5 to continue to be driven.

4 to 7 show another embodiment of the present invention, in which the first and second batteries 6 and 10 are both rechargeable batteries, and a light-receiving surface 24 of a solar cell 24 is attached to a side surface 22 of the battery case 11. The solar cell 2
4, the first and second batteries 6, 10 can be charged individually.

In this embodiment, as shown in FIG.
A changeover switch 26 is disposed on the proximal end surface 12 side of the battery case 11 so that the tip of the press knob 27 protrudes and retracts from the proximal end surface 12, while the battery case 11 is placed on the contact surface 17 side of the battery housing section 16 with the battery case 11 reversed. A hole 33 is provided in which the press knob 27 of the changeover switch 26 fits when the switch is installed in the battery storage section 16. The changeover switch 26 has a set of a normally open contact 29 and a normally closed contact 30, and as shown in FIG.
The positive terminal of the second battery 10 and the second plug 1 via
Connect to the core wire side of 4. Furthermore, the external wire of the second plug 14 is connected to the positive pole of the second battery 10 via the normally open contact 29 of the changeover switch 26, and the negative pole of the second battery 10 is connected to the negative pole of the solar battery 24 and the first
Connect to plug 13.

On the other hand, in the first and second jacks 19 and 20 disposed on the main body case 2 side, the first jack 19 is equipped with a switch 32, and the positive terminal of the first battery 6 is connected to the motor 5 via the switch 32 and the main switch 18.
The negative terminal of the first battery 6 is connected from the second jack 20 to the other end of the motor 5.

Therefore, normally, if the battery case 11 is removed from the main body case 2 as shown in FIGS.
It becomes possible to supply power to the motor 5 from the battery case 1.
By exposing the first light-receiving surface 25 to sunlight, charging of the second battery 10 by the solar battery 24 progresses.

Next, when charging of the second battery 10 is completed,
Align the mark 23 as shown in Figure 5, and then press the main case 2.
Even if the battery case 11 is fitted together, the drive circuit for the first battery 6 and the charging circuit for the second battery 10 still operate independently, as shown in FIG. 7a.

Continue to use the first battery 6, and when the capacity of the battery 6 runs out and power is no longer being supplied to the motor 5 despite pressing the main knob 9, remove the battery case 11 from the main case 2, When attached to the main body case 2 upside down, the press knob 27 of the changeover switch 26 will touch the contact surface 1 of the storage section 16.
7, the open/close states of the normally open and normally closed contacts 29, 30 are reversed as shown in FIG. 7b. Therefore, this time, contrary to FIG. 7a, the first battery 6 is the solar battery 2.
4 to start charging, while the second battery 10
The second battery 10 is connected to the motor 5 via the main switch 18, and power can be supplied to the motor 5 from the second battery 10.

FIGS. 8 to 11 show still another embodiment, in which a charging section 34 is provided inside the battery case 11, and the first and second batteries 6, 10 can be directly charged from a commercial AC power source. There is. Charging part 3
4 is a plug blade 35 that can be moved in and out of the battery case 11;
and a charging circuit 36 that converts the AC voltage input from the plug blade 35 into a predetermined charging voltage.

The plug blade 35 has its base end fixed to the insulating base 37 as shown in FIG. The insulating bases 37 are fixed in position in a state where they are exposed. Furthermore, an electrode plate 39 is placed close to the insulating base 37, and the first and second switches 4 are placed on the electrode plate 39.
0,41 is fixed. Further, a switch groove 42 is recessed approximately in the center of the insulating base 37, and the plug blade 35
At the retracted position, the actuators of the first switch 40 and the second switch 41 both ride on the insulating base 37, and at the first extended position of the plug blade 35 shown in FIG. When the second switch 41 is opened, the second switch 41 is fitted into the switch groove 42 and the open/closed states of both switches 40 and 41 are reversed (FIG. 11b). Furthermore, plug blade 35
With the switch fully exposed, the second switch 41 again climbs onto the insulating base 37 and turns on the switch 41, thereby turning on both switches 40 and 41 (FIG. 11c).

Further, the output end of the charging circuit 36 and both ends of the second battery 10 are connected via the first switch 40, while one of the output ends is connected to the core wire of the first plug 13 via the second switch 41, and the other end is connected to the core wire of the first plug 13 via the second switch 41. are connected to the second plug 14, respectively.

On the main body case 2 side, the first jack 19 is equipped with a switch 32, and the positive terminal of the first battery 6 is connected to the motor 5 via the switch 32 and the main switch 18.

In this embodiment, when the battery case 11 is separated from the main body case 2 as shown in FIG. 10, charging of the second battery 10 and driving of the motor by the first battery 6 are performed in parallel.

Next, as shown in FIG. 11a, when the battery case 11 is connected to the main body case 2 and the plug blade 35 is completely retracted into the case, the second battery
0 is separated from the charging section 34 and the drive circuit of the motor 5, and the motor 5 is driven by the first battery 6 when the main switch 18 is turned on and off.

When the plug blade 35 is slightly exposed from the battery case 11, as shown in FIG. becomes.

Furthermore, when the plug blade 35 is completely pulled out, both the first and second batteries 6, 10 are disconnected from the motor drive circuit and simultaneously connected to the charging section 34, and by inserting the plug blade 35 into an outlet,
Both batteries 6, 10 are charged simultaneously.

In each of the above embodiments, the main body case 2 and the battery case 11 house one battery each. You may use it by switching. Furthermore, it is also possible to house not only the second battery 10 but also the first battery 6 in the battery case and to make it detachable from the main body case 2. The shape of the battery case 11 and the mounting position with respect to the main body case 2 can also be changed as appropriate depending on the structure of the device to which it is applied.

Furthermore, instead of connecting both the electric circuits on the main body case 2 side and the battery case 11 side through a two-wire plug and jack, the configuration of the connecting means may be arbitrary, such as a pin plug or a butt of electrodes.

As explained above, in the present invention, a plurality of batteries are provided as a power source for driving the load 5, and at least one battery 10 is housed in the battery case 11 and is detachably attached to the main body case 2.
1 battery 10 in main body case 2 and battery case 11
Since the load 5 can be connected to the load 5 through the connecting means provided between the load 5 and the load 5, the power source for driving the load 5 can be changed and replaced easily and reliably.

Furthermore, a part of the circumferential surface of the battery case 11 is used as a solar cell 2.
4 light receiving surface 25, and if the solar cell 24 can be used to charge the battery, there is an excellent effect that there is no risk of at least one battery being constantly charged and running out of battery capacity.

[Brief explanation of the drawing]

Figures 1 to 3 show an example of an electric shaver in which the present invention is implemented. Figure 1 is an external perspective view showing the state of use, Figure 2 is an electric circuit diagram, and Figures 3 a and is an explanatory diagram showing the operating state.
4 to 7 show another embodiment of the present invention, FIG. 4 is an external perspective view showing the battery case removed, FIG. 5 is an external perspective view showing the battery case installed, Figure 6 is an electrical circuit diagram, Figure 7
Figures a and b are explanatory diagrams showing the operating state. 8 to 11 show still another embodiment of the present invention, in which FIG. 8 is a front view with the battery case removed, FIG. 9 is an enlarged sectional view of the main parts, and FIG. 10 is an electrical The circuit diagram and FIGS. 11a to 11c are explanatory diagrams showing the operating situation. 2... Main body case, 5... Load (motor), 6
...First battery, 10...Second battery, 16...Storage section, 17...Contact surface, 18...Main switch,
24... Solar cell, 25... Light receiving surface.

Claims (1)

[Claims for Utility Model Registration] (1) A device comprising a plurality of batteries and a load 5 located inside the main body case 2 and to which power is individually supplied from each battery, with at least one battery 10 inside the battery case 11. The battery case 11 can be attached to and removed from the main body case 2, and the battery 10 in the battery case 11 can be connected to the load 5 through a connecting means provided between the main body case 2 and the battery case 11. A small electrical device characterized by: (2) The battery case 11 is a small electric device according to claim 1, in which a part of its circumferential surface is the light-receiving surface 25 of the solar cell 24, and the battery is charged by the solar cell 24.