JPS5948110B2 - rechargeable electrical equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rechargeable electric appliance such as a rechargeable electric shaver or a rechargeable flashlight that has a waterproof function.

Electric razors are sometimes cleaned of beard debris by washing with water, but when doing so, water may get into the charging plug socket or even get inside the case, causing damage to the electrical system. It's causing trouble.

There is also the problem of damaging equipment. Therefore. Waterproofing of the plug socket is required. Also. Flashlights are often exposed to water when used in the rain, and like electric razors, they need to be waterproof. Conventionally, as shown in Fig. 1, a waterproof rechargeable electric shaver has a shaver main body 1 and a charger 2 that are separate, and an inductive charging method is used to enable non-contact charging. There is. This method does not require a plug socket in the electric shaver body 1, so it is excellent in waterproofness, but the adoption of the induction method increases the size and makes it inconvenient to carry. Furthermore, since there is no plug socket, it is not possible to connect the cord directly from an AC commercial power source and use the battery, which is inconvenient in that it cannot be used immediately if the storage battery runs out. As a miniaturized electric shaver, there is one in which an electric shaver main body 1 is connected to a charger via a plug portion 3, as shown in FIGS. 2 and 3.

The one in Figure 2 is configured to be connected to a commercial power outlet via a plug cord 4 provided on the charger 2, and the one in Figure 3 has a plug contact protruding from the main body of the charger 2. 2
A is configured to be plugged into an outlet. However, none of these had a waterproof function in the insertion part 3 connected to the charger 2. Therefore,
An object of the present invention is to provide a rechargeable electric device that can be miniaturized, can be used by connecting a cord from a commercial power source, and has a waterproof function.

0 An embodiment of the present invention is shown in FIG. 4F to FIG. 11.

In the figure, 5 is a case body, in which a storage battery 6 and a charger T are housed in the body, and a motor 8 is housed in the head. As shown in FIG. 5, a protrudingly curved fixed blade 10 is attached to the head of the case body 5 via a blade mount 9, and a rotary blade (not shown) is in sliding contact with the inner surface of the fixed blade 10. It is attached to the motor shaft Ba of the motor 8. The motor shaft Ba passes through the cylindrical portion 9a of the blade mount 9k0-, and the motor shaft 8a
A watertight packing 11 is attached to the inner surface of the cylindrical portion 9a.

A lower cover 12 separate from the cylindrical portion 5a of the case body 5 is provided at the bottom of the case body 5, and a plug insertion recess 13 serving as a plug receptacle is formed in the lower cover 12.

The lower cover 12 is fixed to the cylindrical portion 5a of the case body 5 with screws. An O-ring 14 is interposed between the inner surface of the outer peripheral portion of the lower cover 12 and the cylindrical portion 5a of the case body 5. The plug insertion recess 13 is for inserting the plug 15 (FIG. 9), and has two plug receiving pins 1T protruding inside thereof that contact the contact pieces 16 of the plug 15. Plug 15 is. It is attached to the cord of an adapter that rectifies and transforms AC commercial power. An elastic sealing material 18 made of an O-ring or the like is provided around the opening of the plug insertion recess 13. A protrusion 15a is provided on the outer periphery of the plug 15 to press against the elastic sealing material 18.

Note that the elastic sealing material 18 is fitted into an annular groove provided in the lower cover 12. Reference numeral 19 denotes a lid body that opens and closes the plug insertion recess 13, and is attached to the lower cover 12 so as to be rotatable around the pivot pin 20.

The lid body 19 has a locking protrusion 19a at its free end. A lid locking button 21 that engages with this locking protrusion 19a is integrally formed with the lower cover 12 via its own elastic leg portion. Also.
A return spring 22 is provided on the pivot pin 20 to urge the lid body 19 toward the closing side. The return spring 22 is made of a torsion coil spring. The spring force of the return spring 22 is set to be stronger than the spring force of the lid locking button 21. The tip of a movable pin 23 that slidably penetrates the lower cover 12 protrudes into the plug insertion recess 13, and a plug receiving switch 26, which is closed by pushing the movable pin 23, is inserted into the case body 5. It is provided.

The plug receiver switch 26 has two unit switches 26a, 2
6b are arranged in parallel. These unit switches 26
a and 26b each have a movable contact piece 24 and a fixed contact piece 25. The movable contact pieces 24, 24 of both unit switches 26a, 26b are mutually connected by an insulating member 24', and both movable contact pieces 24, 24 are connected by pushing the movable pin 23.
contact the corresponding fixed contact pieces 25, 25 at the same time. The horn plug 15 is provided with a recess 15b into which the tip of the movable pin 23 is inserted and comes into contact.

The recess 15b is formed to a depth such that the movable contact piece 24 of the plug receiving switch 26 contacts the fixed contact piece 25 when the plug 15 is properly inserted into the plug insertion recess 13. Further, the tip of the movable pin 23 can come into contact with the inner surface of the lid 19, and when the lid 19 is properly closed.
The movable contact piece 24 of the plug receiving switch 26 can come into contact with the fixed contact piece 25. FIG. 10 shows the circuit of the charger 7 and motor 8 provided inside the case body 5. 27a, 27
b are terminals connected to the plug receiving pins 17, 17 of FIG. 4, respectively.

The motor 8 is provided in parallel with the storage battery 6, and the motor 8
can be driven by switching between direct power supply from the adapter connected to the terminals 27a and 27b and power supply from the storage battery 6. Each unit switch 26 of the plug receiving switch 26
a and 26b are respectively interposed in the drive circuit 28 and charging circuit 29 of the motor 8, and an operation switch 30 for opening and closing the drive circuit 28 and the charging circuit 29 at the same time is provided. FIG. 11 shows the circuit of the adapter.

31a, 31b are terminals connected to commercial power supply, 32a, 3
2b is a terminal connected to the plug 15, 33 is a transformer, 3
4 and 35 are rectifying diodes, and 36 is a fuse.

Next, the operation of this rechargeable electrical device will be explained.

During normal use, the cover 19 is closed as shown in FIG. The piece 25 makes contact. That is, both unit switches 26a and 26b are closed. Therefore, the 10th
When the operation switch 30 shown in the figure is closed, the motor 8 rotates and becomes ready for use. Also, the lid body 19 is closed. Lid body 1
9 and the periphery of the plug insertion recess 13 of the lower cover 12 are in pressure contact with each other via the elastic sealing material 18. The plug insertion recess W5l3 is completely watertight, and there is no problem of water getting inside even when washing with water, for example. It also provides a dustproof effect. Furthermore, the lid body 19 is provided with a return spring 22. When the plug 15 is removed from the inserted state as shown in FIG. 9, the lid body 19 is automatically closed, thereby providing even more reliable waterproof and dustproof properties. As shown in Figure 8. If you leave the lid 19 open. The movable contact piece 24 of the plug receiving switch 26 uses its own spring to return the movable pin 23 to the protruding state and separates from the fixed contact piece 25.

In other words. Both unit switches 26a and 26b are opened.
Therefore. Even if the operation switch 30 is closed, the motor 8 does not rotate. Therefore. This prevents the user from accidentally using the lid 19 with it open. Damage to equipment due to ingress of flushing water is prevented. When charging or using AC commercial power. As shown in Figure 9. The plug 15 of the adapter is inserted into the plug insertion recess 13 with the lid body 19 open.

When plug 15 is inserted. Movable pin 2 by plug 15
3 is pushed upwards. The movable contact piece 24 of each unit switch 26a, 26b of the plug receiving switch 26 contacts the fixed contact piece 25. Therefore. The storage battery 6 can now be charged. In addition, if the operation switch 30 is closed, the motor 8 is powered by commercial power.
It becomes possible to drive. Also. When the plug 15 is inserted. The elastic sealing material 18 is compressed by the protrusion 15a of the plug 15, and complete watertightness is obtained between the opening of the plug insertion recess 13 and the plug 15. Therefore.
Even if water droplets fall on the plug 15 during washing, they will not enter the case body 5. It can be safely used and charged using commercial power. in this way. Just by providing one piece of elastic sealing material 18. Waterproofing when the lid body 19 is closed. It can be waterproofed when the plug 15 is inserted. Even when using the storage battery 6 as a power source. Waterproofing is possible even when used with commercial power. Also. When plug 15 is inserted. The plug-in state is incomplete. The movable contact piece 24 of the plug switch 26 does not contact the fixed contact piece 25. Even if the operating switch 30 is closed, the motor 8 does not operate. Therefore. plug 1
5 was not fully inserted and I mistakenly put it in water for washing. You can also avoid using it in a way where it may get wet with water droplets. It's safe. In addition. In the above embodiment, a recessed plug insertion recess 13 was provided as a plug insertion portion. The plug insertion part is flat. The lid that closes this may be cup-shaped.

As above. The rechargeable electric device of this invention is. An elastic sealing material is provided around the plug insertion part of the case body. The plug inserted into the plug insertion portion is brought into pressure contact with the elastic sealing material when the plug is inserted. The lid for closing the plug insertion portion is configured to be brought into pressure contact with the elastic sealing member when the lid is closed. It is compact and uses a plug-in type that allows the use of AC commercial power. Reliable watertightness can be obtained.

Moreover. Even though only one elastic sealing material is provided. Even when the lid is closed and the storage battery is used as a power source. It also has the effect of being waterproof even when plugged in and used or charged with a commercial power supply.

[Brief explanation of the drawing]

Figures 1 to 3 are explanatory diagrams showing conventional rechargeable electric shavers. FIG. 4 is a cutaway side view of one embodiment of this invention. Figure 5 is an enlarged sectional view of the head. Figure 6 is a longitudinal sectional front view of the bottom, and Figure T is a bottom view.
Figure 8 is a cross-sectional view of the tail with the lid open. 9th
The figure is a cross-sectional view of the plug-in state, and Figure 10 is a circuit diagram of the charging circuit and motor drive circuit. FIG. 11 is a circuit diagram of the adapter as well. 5... Case body. 6...Storage battery. T...Charger. 8...Motor. 9...Blade mounting base. 10...
Fixed I fixed blade. 11...Patzking. 12...
...Lower cover. 13... Plug insertion recess. 1
4...0 ring, 15...plug. 1
6...Touch piece. IT...Plug receiving pin. 18...Elastic sealing material. 19...
Lid body. 20...Pivot pin. 21...
Lid locking button. 221...Return spring. 23
・・・・・・Movable pin. 24...Movable contact piece.
25...Fixed contact piece. 26...Plug receiver switch. 26a, 26b...unit switch. 2Ta, 27b...Terminal. 30...
...Operation switch.

Claims (1)

[Scope of Claims] 1. A case body with a built-in charger, a plug insertion portion provided on the case body and serving as a plug receptacle, an elastic sealing material provided around the plug insertion portion, and A plug that is removably inserted into the plug insertion part and presses against the entire circumference of the elastic sealing material in the inserted state; A rechargeable electrical device equipped with a lid that presses around the entire circumference. 2. The charging device according to claim 1, wherein the lid is rotatably supported on the case body at one end so that it can be opened and closed, and is provided with a return spring that biases the lid toward the closing side. type electrical equipment.