JPH0341198B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a rechargeable electric shaver 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 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 furthermore, electrical parts may corrode. Problems such as contact failure occur.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a rechargeable electric shaver that can smoothly release gas generated from a storage battery inside the main body case to the outside of the main body case, thereby eliminating the problems of the conventional shaver.

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 in which the gas vent holes provided in the charging recess are not easily damaged by contact with other objects and exhibit good gas venting performance over a long period of time.

[Means for Solving the Problems] In the present invention, as shown in the figure, 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:
A charging recess 7 into which the charging plug 6 can be freely inserted is provided, and in the charging recess 7, the plug 6 is inserted into the charging recess 7.
The device is characterized in that a gas vent hole 11 penetrating the inside and outside of the case is provided in the inner wall 10 perpendicular to the insertion direction P of the case.

〔Effect of the invention〕

According to the present invention, since the gas vent hole 11 utilizes the existing charging recess 7, the main body case 1
There is no need to make any special shape changes to the . In addition, the inner wall 10 of the recess 7 instead of the inner inner wall 8
Since the gas vent hole 11 is arranged in the recess 7, the gas vent hole 11 is not noticeable even when the user looks into the recess 7.
It does not give general users any suspicions or suspicious feelings such as missing parts. At the same time, the gas vent hole 11 will not be damaged by being poked by a pin or the like. Even if dust enters into the recess 7, it can be well prevented from entering the gas vent hole 11 when the charging plug 6 is inserted. In combination, it becomes possible to set the opening area of the gas vent hole 11 to be large, and there is an advantage that gas venting performance can be maintained satisfactorily over a long period of time with a simple structure.

〔Example〕

The drawings illustrate a rechargeable electric shaver according to the present invention, the main body case 1 of which is made of plastic and has a sealed structure as shown in FIG.
An outer cutter 2 and an inner cutter 3 that slides on the inner surface of the outer cutter 2 are mounted on the upper part of the main body case 1, and inside the main body case 1 there is a drive mechanism that drives the inner cutter 3, although not shown, and a drive mechanism for driving the inner cutter 3. It has a motor, a storage battery 4 such as a nickel-cadmium alkaline storage battery, and a charger 5 whose output end is connected to the storage battery 4.

A charging recess 7 into which a charging plug 6 can be freely inserted from below is provided at the bottom of the main body case 1, and charging power supply pins 9, 9 are protruded through the inner back wall 8 of the recess 7. Power supply pins 9,9 are connected to the input end of the charger.

In such a rechargeable electric shaver, the present invention is characterized in that a gas venting means is provided in the charging recess 7. 1 and 3, the gas venting means has a gas venting hole 11 opened in the inner wall 10 of the recess 7 perpendicular to the insertion direction P of the plug 6 so as to penetrate inside and outside the case. A valve means for opening and closing this is provided inside the case.

As for the valve means in the figure, a valve seat 13 is integrally formed protruding from the inner surface of the case of the gas vent hole 11, the outer periphery of the valve seat 13 is covered with a valve housing 15, and a valve 16 and the valve 16 are disposed inside the valve housing 15. The valve 16 is provided with a spring 17 that always presses toward the seat 13, and the gas vent hole 11 is always closed by the valve 16. Note that when the valve 16 is separated from the valve seat 13, a gas passage 19 is formed between the valve housing 15 and the valve seat 13, which communicates the inside of the main body case 1 with the gas vent hole 10. The valve 16 has a pressed portion 16 a that loosely fits into the gas vent hole 11 and whose tip protrudes into the recess 7 .

In such a case, prepare a charging plug 6 having a pair of connection holes 21, 21 in which a spring 20 is installed, and insert the plug 6 as shown in FIG.
When inserted into the charging recess 7 from below the main body case 1, the connection holes 21, 21 are inserted into the power supply pins 9, 9, respectively. At the same time, a part of the plug 6 is connected to the valve 1.
The protruding tip of the pressed portion 16a of No. 6 is brought into contact with the protruding tip of the pressed portion 16a of No. 6, thereby pushing the valve 16 open toward the inside of the case against the force of the spring 17. Therefore, gas discharged from the storage battery 4 due to overcharging passes through the gas passage 19 and the gas vent hole 11 without filling the main body case 1, and fills the gap between the recess 7 and the plug 6. and is emitted outside the main body case 1.

When the plug 6 is pulled out from the recess 7 after charging is completed, the valve 16 closes the gas vent hole 11 again by the force of the spring 17, so water enters the case from the gas vent hole 11 when washing the electric shaver. Never.

[Another embodiment example]

The valve 16 may be opened by being pressed by a protrusion provided on the plug 6 side.

The charging recess 7 provided on a part of the outer surface of the main body case 1 and the plug 6 inserted into the recess 7 are not limited to the above-mentioned type, and for example, a power supply pin 9 is provided on the plug 6 side, and a connection into which the power supply pin 9 is inserted is possible. A hole 21 may be provided on the recess 7 side.

[Brief explanation of the drawing]

The drawings illustrate the rechargeable electric shaver according to the present invention, and FIG. 1 is a longitudinal sectional front view of the main part, FIG. 2 is a partially cutaway front view of the whole, and FIG. 3 is a cutaway perspective view of the main part. 4 are longitudinal sectional front views of the main parts in a charged state. 1...Body case, 2...Outer blade, 3...Inner blade,
4... Storage battery, 6... Charging plug, 7... Charging recess, 9... Power supply pin, 10... Inner wall of charging recess, 11... Gas vent hole, 13... Valve seat, 15
... Valve housing, 16 ... Valve, 16a ... Pressed part of valve, 17 ... Spring.

Claims (1)

[Claims] 1. A storage battery 4 is built into the main body case 1, and a charging plug 6 is provided on a part of the outer surface of the main body case 1.
A charging recess 7 into which a plug can be freely inserted is provided, and a gas vent hole 11 is provided in an inner wall 10 perpendicular to the insertion direction P of the plug 6 in the charging recess 7, which penetrates into and out of the case. A rechargeable electric razor.