JPH01244791A - Rechargeable electric razor - Google Patents

Abstract

PURPOSE:To automatically execute a venting only in connecting an external member for charging to a connecting part for charging by providing a vent hole to penetrate the case internal and external parts to the connecting part for charging of a main body case, providing a valve seat on the inner circumference surface, and simultaneously, providing a spring to press-energize the contact part of a valve of the valve seat. CONSTITUTION:When a member 6 for charging is connected to a connecting part 7 for charging of a main body case 1, one part of the member 6 for charging presses in a part 13b to be pressed of a valve 13 in resistance to a spring 14 on a case internal side. Thereby, a contact par 13a of the valve 13 is float- separated from a valve seat 11, and a vent hole 10 is opened. Consequently, the gas discharged from a storage battery 4 can be always discharged through said vent hole 10 to the main body case 1 external part in the middle of charging. In a non-charging condition in which the member 6 for charging is removed from the connecting part 7 for charging, the above-mentioned spring 14 works, the contact part 13a of the valve 13 is pressed against the valve seat 11, and the vent hole 10 is closed. As a result, a user can prevent the nonconformity of gas generation due to overcharging without preliminary knowledge.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rechargeable electric shaver with a storage battery built into a two-body case, and is characterized by means for releasing gas generated from the storage battery due to overcharging to the outside of the main body case.

Recently, rechargeable electric razors that can be washed with water and two soaps have become popular, but since these require waterproofing, the two body cases are sealed.

However, with a sealed main body case, problems arise such as the internal pressure of the case increases due to the gas generated from the nickel-cadmium alkaline storage battery during overcharging, causing deformation of the case, and causing contact failure due to the gas.

Focusing on this fact, this invention prevents the internal pressure of the case from increasing due to the gas generated during overcharging by providing a gas vent hole in the insertion connection part of the main body case to prevent case deformation and contact failure. At the same time, it is an object of the present invention to provide a rechargeable electric shaver that can simplify the operation of opening and closing the gas vent hole.

The details will be explained below based on the drawings.

FIG. 1 shows an example of a rechargeable electric shaver according to the present invention, in which a main body case 1 is made of plastic and has a sealed structure. The case 1 has a drive mechanism for driving the inner blade 3 (not shown), a motor for this mechanism, and a storage battery such as a nickel-cadmium alkaline storage battery. Furthermore, a charger 5 connects the output end to the storage battery 4.
etc. are built-in. The bottom of the main body case 1 is provided with an insertion connection part 7 into which a plug 6 can be inserted. The plug-in connection part 7 is provided with a recess 8 at the bottom of the main body case 1, and plug teeth 9, 9 protrude from the bottom of the recess 8, and the plug teeth 9, 9 are connected to the input end of the charger.

In such a rechargeable electric shaver, the present invention provides the plug-in connection 7 with gas venting means. In FIGS. 2 and 3, the gas venting means has a gas venting hole 10 that is opened between the plug teeth 9 and 9 at the bottom of the recess 8 so as to penetrate inside and outside the case, and a valve seat 11 is provided inside the case of the gas venting hole 10. ．． A valve housing 12 is formed to cover the upper part of the valve seat 11, and the valve 13 in the valve housing 12 is always pressed with a spring 14 above the valve seat 11.

It is assumed that the gas vent hole 10 is always closed by the valve 3. Note that a gas passage 15 is formed between the opening lower end of the valve housing 12 and the valve seat 11, which communicates the inside of the main body case 1 with the gas vent hole 10.

In such a case, a pair of connection holes 17 in which springs 16 are installed
17 and an operating protrusion 18 protruding from between the connection holes 17 and 17, and when charging, if the plug 6 is inserted into the recess 8 from below of the main case 1,
The connecting holes 17, 17 are inserted into the plug teeth 9, the operating protrusion 18 is inserted into the gas vent hole 10, and the valve 13 is inserted into the operating protrusion 1.
The case is pushed open inward against the spring 14 by the abutting and pressing action of the case 8. Therefore, gas generated from the storage battery 4 due to overcharging does not fill the main body case 1, but is released to the outside of the main body case 1 through the gas passage 15 and the gas vent hole 10, and through the gap between the recess 8 and the plug 6. be done.

When the plug 6 is pulled out from the recess 8 after charging is completed.

Since the valve 13 closes the gas vent hole 10 again by the force of the spring 14, water will not enter the case from the gas vent hole 10 even if the electric shaver is washed with water or the like.

FIG. 4 shows another modified embodiment of the above 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 gas venting hole 10 of the recess 8 is provided with a gas venting hole 10 inside the case. A cylindrical valve housing 12 is formed which is open at the top and has a vertical groove 19 on the inner periphery, and the positive terminal portion 4a of the storage battery 4 is arranged to face the upper open end of the valve housing 12 through a packing 20.

Place the valve 13 inside the valve housing 12 onto the valve seat 11 of the gas vent hole 10.
The gas vent hole 10 is always closed by the valve 13, which is always pressed by the spring 14 via the ring 21. In this case, the valve 13 is simultaneously pushed open when the plug 6 having the operating protrusion 18 is inserted during charging, as in the above embodiment. The gas released from the main body case 1 is released only into the valve housing 12 without entering the main body case 1.

The gas passes through the gap between the vertical groove 19 in the valve housing 12 and the periphery of the valve 13 and is discharged from the gas vent hole 10 to the outside of the case.

Note that instead of providing the operating protrusion 18 on the plug 6 side,
As shown in FIG. 6, it may be provided on the valve 13 side and protrude from the gas vent hole 10.

Plug-in connection part 7 provided on a part of the outer surface of the main body case 1
The plug 6 to be inserted therein is not limited to the one of the above-mentioned embodiment type, and in addition, for example, plug teeth 9 are provided on the plug 6 side, and a connecting hole 17 into which the plug teeth 9 are inserted is provided.
may be provided on the insertion connection part 7 side of the main body case 1, and the opening/closing direction of the valve 13 is not limited to the same direction as the direction in which the plug 6 is inserted. It can also be arranged perpendicular to the direction.

As explained above, the rechargeable electric shaver of the present invention is provided with a gas vent hole 10 penetrating inside and outside the case in the insertion connection part 7 of the main body case 1, and a valve 13 for closing the gas vent hole 10 directed toward the inside of the case. It is mounted so that it can be pushed open, and is provided with means for always biasing the valve 13 in the closed position with a spring, so that the valve 13 is pushed open by the abutting and pressing action of the plug 6 inserted into the insertion connection part 7. be. Therefore, the gas vent hole 10 can be opened at the same time as the charging operation of inserting the plug 6, and the gas generated during overcharging can be released from the gas vent hole 10 to the outside of the case, preventing an increase in the internal pressure of the case. Deformation and contact defects can be eliminated.

Another advantage is that the valve 13 of the gas vent hole 10 can be opened at the same time as the plug 6 is inserted, and automatically closed by the spring bias when the plug 6 is removed, making it extremely easy to open and close the gas vent hole 10. There is.

[Brief explanation of the drawing]

FIG. 1 is a partially cut-away front view showing an example of a rechargeable electric shaver according to the present invention, and FIG. 2 is a cut-away perspective view of its insertion connection and a perspective view of its plug. FIG. 3 is a cross-sectional view of the plug-in connection shown in a state where the plug is inserted, FIG. 4 is a cross-sectional view showing another modified embodiment of the plug-in connection, and FIG. 5 is an enlarged cross-sectional view taken along the line V-V in FIG. 4. , 6th
The figure is a sectional view showing yet another modified embodiment of the plug-in connection. 1... Main body case. 2...Outer blade. 3...Inner blade. 4...Storage battery. 5... Charger. 6...Plug. 7...Plug-in connection part. 10...Gas vent hole. 13...Valve 1 14...Spring.

Claims (1)

[Claims] (1) In a rechargeable electric shaver that has a storage battery 4 sealed inside the main case 1 and a charging connection part 7 to which a charging member 6 is detachably connected to a part of the outer surface of the main case 1. The charging connection part 7 of the main case 1 is provided with a gas vent hole 10 that penetrates inside and outside the case, and a valve seat 11 is provided on the inner peripheral surface of the gas vent hole 10. A valve 13 for opening and closing the gas vent hole 10 is provided. This valve 1
3 includes a contact portion that sits on the valve seat 11 to close the gas vent hole 10, and a pressed portion that allows the charging member 6 to press in order to open the gas vent hole 10, and is placed on the valve seat 11. A rechargeable electric shaver equipped with a spring 14 that presses and biases a contact portion of a valve 13.