JPS58155676A - Charging type electric implement - Google Patents

Abstract

PURPOSE:To prevent occurrence of combustion even when hydrogen and oxygen gases are leaked in the inner space of equipment from a battery and the mixture arrives at combustible concentration in the inner space of the equipment while it is being charged, by separating the inner space of the equipment into the battery housing section and the housing section of electric components that generate an arc acting as an ignition source using a partition wall. CONSTITUTION:The housing section of a battery 7 and the housing of a motor 6 in the mainframe housing 1 are separated from each other by means of one end of a base 2 on which the battery 7 is mounted and a partition plate 35 that is retained by a pin provided at this one end. The partition plate 35 is made of a material that can absorb a soft shock. A pair of current supply springs 95 and 96 that are fixed to the base 2 using heat seal are inserted between the partition plate 35 and base 2 and a catalyst 61 is mounted on the surface of the partition plate 35 on the motor 7 side. For example, this catalyst 61 is formed by applying palladium on the surface of alumina so as to generate water by making hydrogen and oxygen to react with each other. Besides, for the housing section of the battery 7 out of both housing sections partitioned by the partition plate 35, an exhaust hole 62 is provided so as to connect it to the air.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rechargeable electrical device, and particularly to a rechargeable electrical device having a waterproof and airtight structure.

Batteries such as nickel-cadmium batteries and lead-acid batteries are used in this type of equipment, and when these batteries are charged, water in the cage is electrolyzed to produce hydrogen gas and oxygen scum. The hydrogen gas generated by normal charging and oxygen gas are recombined inside the battery and converted into water. However, if the amount of both gases generated exceeds the ability to recombine and increases the internal pressure of the battery, both gases will be released to the outside of the battery through the second valve installed in the battery.

This is not a big problem if the equipment has an internal structure that is open to the atmosphere, but if the equipment has a sealed structure for waterproofing, etc., the released gas may If hydrogen gas fills the equipment, there is a risk that hydrogen gas may explode due to switch contact arcs or Tanabata commutator arcs within the equipment, damaging the equipment or causing harm to humans. At this ninth point, conventionally t
/i The use of rechargeable batteries in sealed structures was avoided.

The present invention has been developed in view of these points, and its purpose is to provide a rechargeable electrical device that prevents explosions caused by gas generated by batteries during charging.

The present invention will be described below.The present invention includes a battery storage section inside the container and an electric current g8. It is characterized by the fact that it is separated from the parts storage area by a partition wall, and even if hydrogen and oxygen gas leaks from the battery into the container during charging and reaches an explosive concentration inside the container, it will not be ignited. The shaver is designed to prevent explosions due to lack of heat, and will be described in detail below based on the illustrated embodiment.The one shown in the figure is a rechargeable and waterproof rotary electric shaver. be. Incidentally, the electric device may be one that does not have a Tanabata built-in, such as a flashlight. Now, this electric shaver has a main body housing (L) and a 0-ring Cl in the side opening of this main housing fi+.
119, a Tanabata mount 47 is attached in a watertight manner, and a blade mount (4) is fixed to the Tanabata mount (to);
The main body housing (1) is separated from the outer cutter frame (3) that holds the entire outer cutter (9) and the bottom cover (2) which is attached to the other end opening of the main housing (0+) in a watertight manner via the 0 link (gQ). ), and the cylinder (6) is attached to the cylinder mount 4 and housed in the main body housing (1). Connect the output shaft Q50) # of the awner (6) to the awner mounting base 9.
1. A seal bar (c) protrudes from the center hole with a cylinder interposed between the hole edge and the inner cutter (8) is connected to it. The rice field is a water link, and the - symbol is a noosep.

When the internal pressure of the battery (7) reaches its anode, the battery ())
It is equipped with a safety valve that releases gas to the outside,
This anode part is attached to the battery waterproofing module.

As is clear from Figure 3, this battery waterproof module is
It is connected to the outlet K provided on the bottom cover (E),
Guides the gas released from the safety valve to the outside of the vessel. The bottom II is the base of a pair of charging terminals that protrude into the recessed area of the bottom.
Solder @ and connect diode (to) and resistor 14
I11, a light emitting diode →l is installed to indicate charging, and then a printed circuit board G is fixed, and a connection part with one end of the base (2) is attached to the main body housing (1) together with the base (2). Can be assembled.

(C) is an O-link for waterproofing the insertion hole outside the terminal, and (42 is a lamp cover for seeing through the light emitting diode circle).

The switch in this electric shaver is the reed switch (
This reed switch is stored in the main body (1) Tll, and nine pairs of side covers 61 are installed on both sides of the main body housing.
]), between one of the side forces 1 to -6υ and the main body housing 0), there is a Hyaku magnet M- that moves according to the sliding of the switch handle 02) attached to the side cover (B).
Place the permanent magnet on the reed switch e! I am trying to run 9. (141 is a lock button.A pair of rack branches arranged between the side cover and the main body housing (1) and a hinion (■) that engages with both racks (■) are activated by mechanical input from the charging adapter 4 (described later). This is the ninth one that forces the switch handle and permanent magnet @ to the OFF position.

2. Now, the storage area for the battery (7) inside the main body housing (+1) and the storage area for the ℃-taper (6) are the battery (
7) is separated by one end of the base (2) to which it is attached, and a chemical 9J board held by a pin provided at this one end. The partition plate (to) is made of a flexible shock-absorbing material and has a pair of energized springs m- fixed to the base (2) by heat sealing between the partition plate side and the base (2).
It is inserted into the @ of the catalyst, and the catalyst ←η is installed in the partition - of the t-ta (61 @I song. This catalyst lυ is analogously made of aluminum with palladium attached to the surface. In this system, hydrogen and oxygen are reacted to form water.Of the two compartments separated by the partition plate, the compartment for the battery (7) is provided with an exhaust hole to vent the atmosphere. This is so that it can communicate with the exhaust hole provided in the bottom cover.
The air inside the main body housing is normally closed by the valve stem ring in order to seal the darkness, but it is opened by connecting the charging attack M, which has a built-in charging circuit. Then, the O-lunge ring is attached to the valve stem with M diameter inside the exhaust hole, and the holding plate is placed on the top surface of the valve seat.
The exhaust hole is closed by contact with the spring force of the second spring attached. On the other hand, the charging attack (70 units) that supplies charging power is connected to the bottom of the main body housing (1), and is connected to the protruding boss (c) shown in Figure 2.
(2), and the boss Qυ valve shaft &1 is pushed up against the return spring H to open the exhaust hole. Also, at this time, the boss (C) is inserted into the above-mentioned pair of racks (C) from the insertion hole ■.
Switch handle (12) through the binding door/suto
and the permanent magnet (to) are moved to the off position v1.

In this way, the hydrogen and oxygen scum generated from the battery (7) are released from the safety valve of the battery (7) through the battery waterproof membrane (3+1?) and from the discharge port decoy, but if this discharge port is blocked or If a part is damaged or a large amount of debris is generated during charging, a flow path that is isolated from the space inside the main body housing (1) from the safety valve to the discharge port (c) If gas leaks between the two parts, this gas will be released from the exhaust hole opened by the charging adapter G'0 connected during charging, and the second gas will be leaked through the main body housing +
It is limited to the battery (7) storage area in the 1+, and the storage area for the 7-ta (6) F! Since the concentration does not reach iP-, even if an explosive concentration is reached within the main body housing (1), an explosion will not occur because there is no ignition source. Furthermore, even if the separation by the tomoe partition board is incomplete and debris enters the storage area of the 7-tater (6) through a minute gap, its ji- is minute, and the 7-ta (6) Although an explosion may occur due to the commutator arc of the
7) There is no combustion propagation in the storage section 'f'.

In particular, in this embodiment, since the partition plate is made of an impact-absorbing material so as to be able to collect the explosive impact, it is difficult to prevent an explosion from occurring in the storage section of the ℃-ta (6). But that explosion! l#-i small. Also, even if the above explosion were to occur due to the arrangement of the catalyst βυ as mentioned above, it would be extremely small-scale.

6 and 7 show another embodiment, in which a partition plate 351 is formed integrally with the base (2), and the partition plate 351 and the inner surface of the main body housing (1) are different from each other. ■In order to supply power to the seventh unit (6), it is inserted through the pair of energized bin partition plates (fq).
Seal the insertion part of the energizing pin (C) with a button, and connect the energizing pin H-91 to each end of the energizing pin H-, and the battery (6) to the other end.
) side with the current-carrying metal fitting @- in contact.

As described above, the present invention includes a battery storage section inside the container,
It is separated by a partition wall from the storage area for the electrical parts that generate the arc that becomes the ignition source, so that even if hydrogen and oxygen gas from the battery reach an explosive concentration in the container 2, the electrical parts that become the ignition source will not be located. The electrical parts storage compartment is separated, and no gas will flow into this storage compartment, so an explosion will not occur. Since there is little wax in the gas, the explosion will be small and the combustion will not propagate to the battery compartment, so the explosion will not damage the vessel.On the contrary, this small explosion and combustion will consume the scum inside the vessel and cause the scum to disappear. You won't be attacked, and you can actually say it's safe.

[Brief explanation of the drawing]

Figure 1 is a perspective view of one embodiment of the present invention, Figures 2 (a) and (b)
is a perspective view V of the charging adapter, FIG. 3 is a broken side [fi diagram] of the above embodiment, FIG. 4 is a cross-sectional view of the same, FIG. 5 is an exploded perspective view of the same, and FIG. FIG. 7 is a cross-sectional view of the same main parts. (61 indicates a 7-tor as an electric component that generates an arc as an ignition source, 7) indicates a battery, and a partition plate as a 351+-1 bulkhead. Agent Patent Attorney Ishi 1) Chief Seven Procedures Amendment Letter (Method) Issued on July 7, 1980 Dear Commissioner of the Patent Office 1, Indication of the case 1982 Patent Application No. 3780 (1 2, Name of the invention Rechargeable electrical equipment 3, Person making the amendment Relationship to the case Special Applicant Address 1048 Kadoma, Kadoma City, Osaka Name (583) Matsushita Electric Works Co., Ltd. Representative Iku Kobayashi 4, Agent 5, Date of amendment order No. 2 (a) (b) attached. Correct as shown in Figure 2 (0) (b) 0 -

Claims (1)

[Claims] +1+ An electrical device in which a rechargeable battery and an electrical component that generates an arc that serves as an ignition source to explode hydrogen and oxygen generated from the battery are housed in a sealed container, and the battery compartment is (2) The rechargeable type is characterized in that the container is separated by a partition wall from a housing part for electrical parts that generate an arc that serves as an ignition source.7. A rechargeable electric device as described in the scope item 1 of Patent III, which is characterized by: