JPH0248271B2 - JUDENSHIKIDENKIKAMISORI - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a rechargeable razor with a built-in storage battery inside the main body case, and a means for releasing gas generated from the storage battery due to overcharging to the outside of the main body case. Has characteristics.

[Conventional technology]

Recently, rechargeable electric razors that can be washed with water and soap have become popular, and their cases are sealed to ensure waterproofness.

On the other hand, this type of storage battery releases gas (hydrogen gas) when it is overcharged. That is, the battery is equipped with a safety valve that releases gas to the outside when the internal gas pressure of the storage battery increases.

[Problem to be solved by the invention]

In such sealed rechargeable electric shavers, if the gas from the storage battery fills the main body case, there is a risk of a gas explosion, the main body case may become deformed due to the increase in internal pressure, and there is a risk of corrosion of the electrical parts. Problems such as contact failure occur.

Therefore, the purpose of the present invention is to release the generated gas from the storage battery inside the main body case to the outside of the main body case.
The aim is to obtain a rechargeable electric razor that can eliminate the problems of the conventional ones.

Another object of the present invention is to provide a rechargeable electric shaver that allows degassing with a simple structure by utilizing an existing charging recess provided in a part of the outer surface of the main body case.

Still another object of the present invention is to provide a rechargeable electric shaver that can effectively prevent deformation and damage to gas vent holes during non-charging and ensure good gas venting performance over a long period of time.

[Means to solve the problem]

The rechargeable electric shaver of the present invention has a storage battery 4 built into a main body case 1 as shown in the figure, and a plug-in connection part 7 including a recess 8 into which a charging member 6 can be freely inserted is provided on a part of the outer surface of the main body case 1. A rechargeable power supply pin 9 is projected into the recess 8, and a gas vent hole 10 is provided at the innermost part of the recess 8 to release gas from the storage battery 4 to the outside of the main case 1. It is.

〔Effect of the invention〕

According to the present invention, the existing charging recess 8 provided on the outer surface of the main body case 1 is used to provide the gas vent hole 10 in the recess 8, so that the external shape of the main body case 1 is changed for gas venting. There is no need to make any special changes, and it can be implemented at low cost.

In addition, the gas vent hole 10 is provided in an inconspicuous inner part of the recess 8, and the power supply pin 9 protrudes into the recess 8, so that when not charging, that is, when storing, carrying, or using, other utensils a was originally concave part 8
It is difficult to get inside the device, and the power supply pin 9 also serves to prevent objects from entering. Therefore, the gas vent hole 10 is not damaged by being poked by a fingertip or a pin, or by contact with other objects, and good gas venting performance can be maintained over a long period of time.

[First Embodiment] FIGS. 1 to 4 show a first embodiment of a rechargeable electric shaver according to the present invention.

In FIG. 2, the main body case 1 of this device is made of plastic and has a sealed structure, and an outer cutter 2 and an inner cutter 3 that makes contact with the inner surface of the outer cutter 2 are attached to the upper part of the main case 1. Although not shown, a drive mechanism for driving the inner cutter 3, a motor for this drive mechanism, a storage battery 4 such as a nickel-cadmium alkaline storage battery, and a charger 5 that connects the output end to the storage battery 4 are built in.

The bottom of the main body case 1 is provided with a plug-in connection part 7 that allows a plug-in connection of a charging member 6 connected to a commercial power source. This plug-in connection part 7 includes a recessed part 8 recessed in the bottom wall of the main body case 1 so as to open downward, and charging power supply pins 9, 9 are protruded into the recessed part 8 by penetrating the inner back wall 8a of the recessed part 8. , the power supply pins 9, 9 are connected to the input side of the charger.

In such a rechargeable electric shaver, the present invention is characterized in that the plug-in connection portion 7 is provided with a degassing means. In FIGS. 1 and 3, the gas venting means is such that a gas venting hole 10 is opened between the power supply pins 9 and 9 on the inner wall 8a of the recess 8 so as to penetrate inside and outside the case. A valve seat 11 is integrally formed on the inside to protrude, and the valve seat 1
A cap-shaped valve housing 12 that covers the upper outer periphery of the valve housing 12 is disposed, and a valve 13 that can freely move up and down and the valve 13 is disposed within the valve housing 12.
The gas vent hole 10 is always closed by the valve 13. The lower end of the valve housing 12 is open, and when the valve 13 is pushed up against the spring 14, the inside of the main body case 1 and the gas vent hole 10 are communicated between the valve 13 and the valve seat 11. A gas passage 15 is formed.

The charging member 6 has a pair of connection holes 17 and 1 in which a spring 16 is installed as shown in FIGS. 3 and 4.
7, and an operating protrusion 18 protruding from between the connection holes 17, 17. When charging member 6 is inserted into recess 8 from below of main case 1 during charging, connection holes 17, 17 are connected to power supply pins. 9, 9, the operating protrusion 18 engages the gas vent hole 10, and the valve 1
3 is pushed open toward the inside of the case against the force of the spring 14 under the pressing action of the operating protrusion 18 . Therefore,
Gas generated from the storage battery 4 due to overcharging passes through the gas passage 15 and the gas vent hole 10 without filling the main body case 1, and enters the recess 8 and the charging member 6.
It is discharged to the outside of the main body case 1 through a gap formed between the plug part and the plug part.

When the charging member 6 is removed from the recess 8 after charging is completed, the valve 13 closes the gas vent hole 10 again under the pressure of the spring 14, so that water and dust can be trapped in the gas vent hole when washing the electric shaver. 10 will not enter the case.

When stored, used, or in a non-charging state, it is difficult for objects, fingertips, etc. to enter the recess 8 to the innermost side. In addition, the power supply pin 9 serves to protect the gas vent hole 10 by further blocking the intrusion of objects such as the utensils a, as shown in FIG. Therefore, the gas vent hole 10 provided in the inner wall 8a of the recess 8 can be reliably prevented from being deformed or damaged.

[Second Embodiment] Figures 5 and 6 show a second embodiment of the present invention relating to gas venting means. Considering that the storage battery 4 is generally equipped with a safety valve for gas release on the positive electrode terminal 4a, a cylindrical valve that opens upward and has a number of vertical grooves 19 on the inner periphery is installed inside the case of the gas vent hole 10 of the recess 8. A housing 12 is formed, and the positive electrode terminal portion 4a of the storage battery 4 is disposed in close contact with the upper open end of the valve housing 12 via a packing 20. And gas vent hole 10
A valve 13 in a valve casing 12 is always pressed against the valve seat 11 by a spring 14 via an O-ring 21, so that the gas vent hole 10 is always closed by the valve 13.

Also in this case, when charging, the operation protrusion 1 of the charging member 6
8, the valve 13 is pushed open. However, the gas that comes out from the safety valve of the positive terminal 4a of the storage battery 4 due to overcharging does not enter the main body case 1 and is removed from the valve housing 1.
2 and is released from the gas vent hole 10 toward the recess 8 through the gap between the vertical groove 19 in the valve housing 12 and the periphery of the valve 13.

[Third Embodiment] FIG. 7 shows a third embodiment of the present invention. In this case, instead of providing the operating protrusion 18 on the charging member 6 side, it is provided on the valve 13 side and a gas vent hole is provided. 10 into the recess 8. This also pushes up the operating protrusion 18 with a part of the charging member 6 to similarly open the gas vent hole 10. The other configurations are the same as in the first embodiment.

[Brief explanation of drawings]

1 to 4 show a first embodiment of a rechargeable electric shaver according to the present invention. 3 is a partially cutaway front view of the entire battery, FIG. 3 is a partially cutaway perspective view of the main part, and FIG. 4 is a longitudinal sectional front view of the main part in a charged state. 5 and 6 show a second embodiment of the rechargeable electric shaver according to the present invention, FIG. 5 is a longitudinal sectional front view of the main part,
FIG. 6 is an enlarged sectional view taken along line A--A in FIG. 5. FIG. 7 is a longitudinal sectional front view of the main parts of a third embodiment of the rechargeable electric shaver according to the present invention. DESCRIPTION OF SYMBOLS 1... Main body case, 4... Storage battery, 6... Charging member, 7... Plug-in connection part, 8... Recessed part, 8a
... Inner wall of the recess, 9 ... Power supply pin, 10 ... Gas vent hole, 13 ... Valve, 14 ... Spring.

Claims (1)

[Claims] 1. A storage battery 4 is built into the main body case 1, and a part of the outer surface of the main body case 1 is provided with an insertion connection part 7 including a recess 8 into which a charging member 6 can be freely inserted, the recess 8 This rechargeable electric shaver has a power supply pin 9 for charging projected therein, and a gas vent hole 10 for discharging gas from a storage battery 4 to the outside of the main body case 1 is provided at the innermost part of the recess 8.