JPS59167973A - Rechargable miniture electric machinery - Google Patents

Abstract

PURPOSE:To promote recharging positively and to prevent missing of recharging, by feeding power from standby second cell to load only when operating connecting means to bring rechargable state and confirming user that standby cell is operating. CONSTITUTION:Under normal usage, lower portion of switch knob 18 is covered with open/close board 46 to prevent pressing operation while to feed powder from first cell 11 to motor 5 through function of first switch 9. Upon extinction of first cell 11, operating knob 38 of connecting means is pressed to unlock and to expose the plug edge 25 to the outside of body case thus to bring the charging section 7 to usable state. Consequently switch knob 18 of second switch 10 is exposed to enable power supply from second cell 12 to motor 5. Projection of plug edge 25 will indicate user that second cell 12 is operating while when inserting the plug edge 25 into receptacle, first and second cells can be recharged continuously.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small-sized rechargeable electric device, and particularly to a small-sized electric device equipped with a spare rechargeable battery in addition to a rechargeable battery for normal use as a power source for driving a load.

Conventionally, first and second rechargeable batteries have been provided as a power source for driving small equipment, and even after the first battery runs out of capacity and the equipment becomes unusable, the load drive source can be switched back to the first battery by operating a switch. A small rechargeable electric device has been proposed that can be used continuously without being charged by simply switching from the battery side to the second battery side.

However, once the drive source is switched from the first battery to the second battery, the device can continue to be used without any problems, so it is easy to forget that it needs to be charged.

There was a problem in that even the second battery, which was originally supposed to be provided as a spare, was used up, and the purpose of having a spare drive battery was lost.

The present invention has been made with attention to this point, and in addition to providing a means for connecting to a commercial AC power supply integrally with one device, the present invention provides a device as a backup device only when the connecting means is operated to enable charging. By making it possible to supply power from the second battery provided to the load, the user can be made aware that two spare batteries are in use, and the user can be actively encouraged to charge the battery to avoid forgetting to charge the second battery. The purpose of the present invention is to provide a small rechargeable electrical device that can prevent unnecessary use of batteries.

The present invention will be specifically described below based on an embodiment shown in one drawing.

Although the two drawings show an example in which the present invention is implemented in a reciprocating electric shaver, the present invention is of course not limited to this and can be implemented in various rechargeable small electric appliances such as tape winders and flashlights.

As shown in FIGS. 1 to 5, the electric shaver I according to the present invention includes 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. Inside the main body case 2 are a motor (load) 5 for reciprocating the inner cutter 4, a power supply section 6 for supplying power to the motor 5, and a power supply section 6 for supplying power to the motor 5.
The timing of energizing the motor 5 can be determined by turning on and off a first switch 9 provided on the front surface 8 of the main body case 2 and a second switch 10 disposed at the lower end of the main body case 2. or regulated.

The power supply section 6 is composed of first and second rechargeable batteries such as nickel cadmium batteries that can withstand multiple charging and discharging operations. Use 1 AA battery with smaller battery capacity as the 2nd battery 1
2 using j, M. First and second batteries 11.
12, the negative poles are directly connected to each other, and one connection point is connected to one end of the motor 5, as shown in FIG. Further, a sealed contact 13 of a first switch 9 and a second switch knob 10 is interposed between the positive terminal of the first battery 11 and the motor 5, and a sealed contact 13 of a second switch 9 and a second switch 10 are interposed.
By interposing the normally open contact 14 of the second switch knob 10 between the switch knob 2 and the motor 5, the timing of power supply from the first battery 11 to the motor 5 can be controlled by operating the switch knob 17 of the first switch knob 9. The power supply timing from the second battery 12 to the motor 5 can be regulated by pressing the switch knob 18 of the second switch knob 10.

The charging unit 7 reduces the voltage of the commercial AC power input from the connecting means 19 arranged at the lower end of the main body case 2 to a predetermined charging voltage using a charging circuit 21 including an inverter.

The charging voltage output from the charging circuit 2I is connected to the diode 22.
・After rectifying with 23, the first and second batteries 11 and 12
is applied to both ends of the battery to charge both batteries 11 and 12. One diode 23 is a light emitting diode, and a light emitting part is exposed on the curved surface 8 of the main body case 2 to display the charging time.

As shown in FIGS. 2 and 3, the connection means 19 includes a plug blade 2 in the form of a strip that corresponds to a household outlet on an insulating base 24.
5 and 25, and an insulating base 24 is installed on the inner surface of the bottom wall 26 of the main gauge 2.
1 double plug blade 25.2
The tip 29 of the main body case 2 can be exposed and retracted through slits 31 provided in the side wall 30 of the main body case 2. The sliding rail 27 is erected in the center of the bottom wall 26 of the main body case 2, surrounding an elongated operation hole 32 opened in an elongated direction.

Corresponding to the protruding and retracting positions G of the plug blade 25.

The sliding rail 27 is expanded back and forth in a direction perpendicular to the sliding direction of the insulating base 24 to form openings and grooves 33 and 34. A recess 37 is formed in the lower surface 36 of the insulating base 24, and
The operating knob 38 is fitted with a lever so that it can move up and down, and the knob 38 is pushed down and biased by a spring body 39 to open the upper end flange 40 of the knob 38.
is supported on the slide rail 27 so as to be slidable in left and right directions. The electrode plate 41 is placed close to the top of the dew-colored IT base 24.
By fixing the sliding electrodes 42, 42 on the electrode plate 41 at the reciprocating positions of the plug blades 25, 25, the plug blade 25 and the charging circuit 21 are connected via the sliding electrodes 42, 42.
is connected, and the upper end flange 40 of the operating knob 38 engages with the opening/pick grooves 33 and 34 at the protruding/retracting side position of the plug blade 25 and is fixed in position, thereby preventing the insulating base 24 from moving unnecessarily at each operating position. I try not to.

The present invention is characterized in that the second switch 10 can be used in conjunction with the sliding operation of the insulating base 24.

In the bottom wall 26 of the main body case 2, the end of the insulating base 24 on the retraction side is slightly recessed to form a step 43, and an operation hole 44 is provided on the top surface of the step 13, and an opening/closing hole is provided on the side surface. 45 will be established respectively. A second switch 10 is fixed on the electrode plate 41 above the step portion 43 in alignment with the operation hole 44, and the switch knob 18 of the second switch 10 is made to exit from the operation hole 44 to the outside of the main body case. A thin plate-shaped opening/closing plate 46 passes through the opening/closing hole 44 from the base end of the base 24 and extends toward the stepped portion 43. The length of the opening/closing plate 46 allows the opening/closing plate 46 to cover the lower part of the switch knob 18 when the insulating base 24 is in the retracted position.
The opening/closing plate 46 is set to be housed in the main body case 2 with the plug blade 25 completely protruding from the main body case 2.

Therefore, during normal use, the opening/closing plate 46 covers the lower part of the switch knob 18 to prevent the pressing operation, as shown in FIG. 11 supplies electric power to the motor 5. When the capacity of the first battery 11 is exhausted and the motor 5 cannot be driven, push the operating knob 38 of the connecting means 19 to release the lock as shown in FIG. By exposing the charging section 7 to a usable state, the switch knob 18 of the second switch 10 is exposed, and as shown in FIG.
It becomes possible to energize. Since the plug blade 25 protrudes while the second battery 12 is in use, it is clearly shown to the user that the second battery 12 is in use.

By directly inserting the plug blade 25 into the outlet, the first and second batteries 11 and 12 are subsequently charged.

6 and 7 show another embodiment of the present invention,
Instead of physically disabling the use of the second switch notch 10 with the opening/closing plate 46, switching is made to open and close in series with the normally open contact 14 of the second switch notch 10 in conjunction with the extension and withdrawal of the plug blade 25. By connecting the switch 15, the second switch 1 is electrically connected.
It is possible to regulate the timing of use of 0. That is, when the plug blade 25 is in the retracted position,
As shown in Figure (a), the changeover switch 15 disposed on the electrode plate 41 is pressed by the insulating base 24 and turned off, and the second switch 15 is turned off.
Despite the pressure of the notch 10, no current is applied from the second battery 12 to the motor 5, as shown in Fig. 6fb) and Fig. 7(b).
As shown in the figure, when the plug blade 25 is exposed from the main body case 2, the changeover switch 15 is closed and the second switch 10 is closed.
This makes it possible to use Note that in this embodiment, the second
The position of the switch 10 is not particularly limited, such as arranging the first switch 9 and the second switch 10 side by side.

FIG. 8 shows yet another embodiment of the invention.

The connecting means 19 is configured to be a rotating type instead of a sliding type. In this case, the second switch 10 is covered with the insulating base 24, making the switch 10 unusable.

In other words, in conjunction with the rotation of the insulating base 24, the second switch 1
The switch Z 15 connected in series with 0 is controlled to be turned on or off.

Note that the first and second batteries 11 and 12 may have the same capacity. Further, the first switch 9 may be a push button type instead of a slide type. Furthermore, the electric circuit can be modified as appropriate as long as the first battery 11 and the second battery 12 can individually supply power to the motor 5.

As explained above, two aspects of the present invention include a commercial AC power source and a charging section 1.
Only when the connection means 19 with the second battery 7 is operated to enable charging, the second switch 10 that regulates the timing of energization from the second battery 12 provided in reserve can be used.
The use of the battery 12 is suppressed to the minimum size necessary, and the user is clearly informed that the second battery 12 is in use, impressing the need for charging, and furthermore, when the use is finished, the plug blade 25 can be plugged into the outlet. The battery can be put into a charging state simply by plugging it into the battery, which has the advantage of preventing forgetting to charge the battery without requiring any effort.

[Brief explanation of the drawing]

1 to 5 show an example in which the present invention is applied to an electric shaver, and FIG. 1 is a partially cutaway external perspective view;
Fig. 2 is an exploded perspective view showing the connecting means, Fig. 3 (a) and fb) are explanatory diagrams showing the operation status of the connecting means, Fig. 4 is an electric circuit diagram, and Fig. 5 (al and (bl are It is an explanatory diagram that does not show the switching state of the first battery and the second battery. Figures 6 and 7 show another embodiment of the present invention, and Figure 6 (=1) Wayohi (b) is FIG. 7 is a cross-sectional view showing the operating situation (al and fbl are electrical circuit diagrams corresponding to FIG. 6(a) and (bl), respectively. FIG. Yes. 2... Main body case. 5... Load (motor). 6... Power supply section. 7... Charging section. 9... First switch. 10...Second switch. 11...First battery. 12...Second battery. 18...Switch knob. 19...Connection means. 21...Charging circuit 24... Insulation base. 25... Plug blade. 27... Sliding rail. Figure 1 Figure 3 (a) 4N 51st N, (a) 12-=', □ i -----1 Figure 6 (a) 367-71st] (a) Figure 7 (b)

Claims (2)

[Claims] (1) A power supply section 6 equipped with first and second rechargeable batteries 11 and 12, a load 5 to which power is supplied from the power supply section 6, and a load on which the first battery 11 and second battery 12 are each individually loaded. 5
the first and second switches 9 and 10 that can be connected to the power supply section 6, the charging section 7 that can charge the power supply section 6, and the commercial AC power supply and the charging section 7.
and a connecting means 19 for connecting the first switch 9 and the first switch 9.
Or connect one of the second switches 10 to the connecting means 19
A small rechargeable electrical device characterized by being usable in conjunction with the operation of the. (2) The connection means I9 connects the plaque blade 2 to the insulating base 24.
5 is implanted so that it can freely appear and retract from the main body case 2, and the first switch 9 is installed on the front side 8 of the main body case 2, and the second
The switches 10 are respectively disposed near the connecting means 19, and the switching knob 18 of the second switch 10 is always covered, and the switch knob 18 is connected to the exit of the plug blade 25 from the main body case. A rechargeable small electric device according to claim 1, wherein the rechargeable small electric device is capable of exposing.