JPH06196002A - Waterproof portable electric lamp - Google Patents

Abstract

PURPOSE:To prevent the generation of a gas or leakage of an electrolyte from a battery connected reversely to others by providing, in a body case, a pressure switch which is changed from ON to OFF when the gas pressure in the case is a determined pressure value or more. CONSTITUTION:When one dry battery is connected reversely to others to carry a current, the reversely connected battery is charged by the other dry batteries, and a gas such as hydrogen is generated in the battery. This gas is leaked to the outside of the battery, and its pressure is gradually enhanced. The pressure rise is transmitted from an air hole 16 to the pressure receiving part of a pressure switch 12, and the pressure switch 12 is forcedly switched from ON state to OFF state. Even when a manual switch button 7 for controlling the current carrying between a miniature lamp 2 and a battery 4 is in ON state, a current carrying circuit can be forcedly turned OFF.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement for improving the safety of a waterproof portable electric lamp which is used as a power source in a water or rain, and more particularly to an explosion-proof structure of a main body case for accommodating the battery. Is.

[0002]

2. Description of the Related Art FIG. 3 is a side sectional view of a conventional waterproof portable electric lamp.

As shown in FIG. 3, a conventional waterproof portable electric lamp is connected in series with a front base 1 having a lens and a reflector 3 having a hemispherical portion in which a miniature ball 2 is arranged in the center. A resin main body case 6 having a plurality of, for example, four dry batteries 4 in which a battery housing 5 is housed, and a manual switch button 7 for controlling energization between the miniature ball 2 and the battery 4. It consists of and.

Here, the main body case 6 is formed in a flared trumpet shape, and the front base 1 to which the reflection plate 3 is attached is fitted into the opening thereof.

A switch button 7 is provided on the upper portion of the body case 6 near the opening, and its contact portion is provided so as to face the body case 6.

Here, an O-ring 8 is attached to each of the fitting portion of the main body case 6 and the front base 1 and the mounting portion of the switch button 7 of the main body case 1 for the electric lamp in water or rain. Water is prevented from flowing into the main body case through these gaps during use.

In the opening of the main body case 6,
To the reflection plate 3, a miniature ball socket 9 and a holder 11 having a lead piece 10 are connected.

Here, the lead piece 1 is attached to the holder 11.
Three 0s are provided, one of which has one end connected to one terminal of the battery 4 housed in the battery housing 5 and the other end housed in the mini ball socket 9. It is connected to one terminal of the miniature ball 2.

The other one has one end connected to the other terminal of the battery 4 housed in the battery housing 5 and the other end led to the lower part of the switch button 7.

Further, the other one has one end connected to the other terminal of the miniature ball 2 and the other end guided to the lower portion of the switch button 7.

At this time, the two lead pieces guided to the lower part of the switch button 7 are arranged in parallel in a non-contact state so as to face each other and to form a contact point of the switch. And
When the switch button 7 is pressed when the electric lamp is used, one lead piece comes into contact with the other lead piece in conjunction with this button operation to form a closed circuit that enables the energization of the miniature ball and the battery.

[0012]

However, in a waterproof portable electric lamp in which three or more batteries, for example, manganese dry batteries are connected in series, if one dry battery is erroneously connected in the opposite direction, power is supplied. , Only that battery is charged by another battery.

Usually, in a manganese dry battery, an aqueous solution in which manganese dioxide (MnO ₂ ) is used for the positive electrode, zinc (Zn) is used for the negative electrode, and a neutral salt or an alkali salt is used for the electrolytic solution is used.

When the dry battery fell into an unfavorable charged state, a large amount of hydrogen gas and oxygen gas were generated mainly by electrolysis of water in the electrolytic solution. Further, in the latter half of the electrolysis of water, nitrogen gas and the like were also generated due to the decomposition of ammonium chloride (NH ₄ Cl) and zinc chloride (ZnCl ₂ ) contained in the neutral salt electrolytic solution.

In addition, as described above, when only some of the many dry batteries are connected in the reverse direction, the voltage drops below the predetermined voltage and the miniature ball lights up slightly darkly but continues to light up as it is. The user of the electric lamp sometimes continued to use the battery without noticing that he or she accidentally connected the battery in reverse.

When the battery is continuously used in this state, after the gas such as hydrogen and oxygen fills the inside of the battery in the reverse connection state, it leaks to the outside of the battery through a gap formed in the caulking portion of the battery, It was gradually accumulating in the body of the light.

In addition, when these gases leak to the outside of the battery, the electrolytic solution inside the battery may also leak to the outside of the battery. The leaked electrolytic solution may contaminate the inside of the main body case or the contact portion. In some cases, it may cause corrosion and eventually become unusable as an electric lamp.

Further, the waterproof portable electric lamp has a closed structure in order to prevent water from entering from the outside. However, this prevents the gas inside the battery from being released to the outside. Therefore, the gas leaked from the dry battery connected in the opposite direction in the main body case was not discharged from the battery housing portion of the main body case to the outside of the case, and all of the gas was fully accumulated in the main body case.

In the portable electric lamp in this state, when the switch button is operated and the contact portion is repeatedly opened and closed, a spark may be generated when the contact is turned off. The spark is generated in the gas accumulated and accumulated in the main body case. There was a danger of catching fire and exploding.

In addition, when a battery is accidentally connected in the opposite direction to the other batteries while the battery is still charged, gas or electrolyte continues to leak into the main body case of the lamp. There is such a danger. Therefore, in order to ensure safety when using a light, visually check the portable light every time to grasp the state change of the inside of the case and the battery, and if there is an abnormality, operate the manual switch button The power to the battery was intentionally stopped.

However, generally, the state inside the main body of the electric lamp is rarely checked each time, and when the user notices an abnormality in the electric lamp, gas or electrolyte leaks from the battery considerably. It was going on.

The present invention solves such a problem, and in a waterproof portable electric lamp using three or more dry batteries, one battery is erroneously connected in the opposite direction to the other battery to carry electricity. Even if gas such as hydrogen or the electrolyte leaks with this gas from a battery that is connected in the opposite direction and charged by another battery, the gas pressure is detected and the pressure is set to a specified value. The present invention provides a waterproof portable electric lamp capable of forcibly stopping the energization when the temperature reaches, and stopping further leakage of gas and electrolyte from the battery.

[0023]

In order to solve the above-mentioned problems, a waterproof portable electric lamp according to the present invention has a main body case having a battery accommodating portion for accommodating three or more dry batteries connected in series. Equipped with a pressure switch that turns from the on state to the off state when the pressure inside the case rises to a predetermined pressure value, this pressure switch was connected in series to a series energizing circuit consisting of a miniature ball, a light bulb and switches for energizing these. It is a thing.

Therefore, even when the manual switch for controlling the energization between the miniature ball and the battery is in the ON state, when the pressure in the case rises, the pressure switch is actuated as the pressure rises, and the pressure is compulsorily increased. The series energizing circuit is turned off.

[0025]

In such a waterproof portable electric lamp of the present invention, in the main body case in which three or more dry batteries are connected in series while one battery among them is wrongly connected in the opposite direction, Even if the reverse battery is charged and a large amount of gas such as hydrogen is generated in the battery and leaks from the battery into the main body case, the generated gas will reach the specified pressure value in the main body case. When the charge is accumulated, the pressure switch is switched from the on state to the off state. Therefore, even if the switch for controlling the energization of the miniature ball and the battery in the normal state is on, the energization of the battery and the miniature ball is forcibly turned off. be able to.

As a result, it is possible to prevent the gas and the electrolytic solution from leaking out further from one battery which is in the opposite direction to the other batteries, and to prevent the condition inside the lamp from further deteriorating.

[0027]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a side sectional view of the waterproof portable electric lamp of the present invention, and FIG. 2 shows a partially enlarged view of the rear portion of the main body case. As shown in FIGS. 1 and 2, in the waterproof portable electric lamp of the present invention, the main body case 6 is made of ABS (acrylonitrile-budadiene-styrene copolymer) resin,
A pressure switch 12 is provided at the bottom of the case 6 in series with a battery storage 5 for storing four AA dry batteries connected in series.
There is provided a pressure switch storage chamber 13 for storing.

Here, the pressure switch storage chamber 13 is formed by partitioning the bottom portion of the main body case 6 with the battery storage portion 5 by the partition wall 14.

The pressure switch 12 is, for example, one in which two metal thin films (diaphragms) are superposed, the periphery thereof is welded to form a bag, and an opening which becomes a pressure receiving portion is provided in a part of one thin film. Yes, this pressure switch 12 is positive,
The negative terminal and the positive and negative terminals of the battery 4 housed in the battery housing are connected in series by the lead wire 15 via the partition wall 14. Further, a gas inlet 16 for introducing gas is provided in the partition wall 14, and the pressure switch 12 is attached to the partition wall 14 so that the pressure receiving portion of the pressure switch 12 coincides with the vent hole 16.
Furthermore, a part of each metal thin film of the pressure switch 12 is provided with a contact in a contact state,
The contact of these contacts keeps the pressure switch on.

When a gas having a predetermined pressure, for example, a pressure of 1.6 atm or more, flows into the bag-shaped pressure switch 12 through the opening provided in one of the metal thin films, the metal thin films move in opposite directions. It swells, and the contacts that were in contact with each other so far are separated and turned off.

Therefore, even if the switch button 7 is turned on to energize the bean ball and the battery, this energization is forcibly stopped.

Now, in the main body case 6 which can accommodate four AA type dry batteries and has an internal volume of about 50 cm ³ ,
If one dry cell is connected in reverse to the other to energize, the battery connected in the opposite direction will be charged by the other dry cell and gas such as hydrogen will be generated inside the battery, and this gas will leak out of the battery. The pressure gradually increases. And the pressure is 1.
When the pressure is increased to 6 atm, the pressure increase is transmitted from the vent 16 to the pressure receiving portion of the pressure switch 12, and the pressure switch is forcibly switched from the on state to the off state. The energizing circuit can be forcibly turned off even when the manual switch button 7 for controlling the energization between the mini ball and the battery is in the on state.

Therefore, by the forced off operation of the pressure switch, the energization of the energizing circuit is automatically stopped, and it is possible to prevent the battery connected in the opposite direction from being further charged by another battery, and the gas is continuously discharged from this battery. There is no generation or leakage of electrolyte.

[0035]

As described above, in the waterproof portable electric lamp of the present invention, since the main body case is provided with the pressure switch for switching from ON to OFF when the gas pressure in the case becomes a predetermined pressure value or more, User mistakenly puts 4 in the body case
Even if one of the batteries is connected in the reverse direction and the light is continued to be used without noticing it, a large amount of gas such as hydrogen will be generated from the reverse battery and the battery will be discharged together with the electrolyte. Leaks into the main body case and the pressure in the main body case rises to a predetermined pressure value, the pressure switch is switched from on to off.

Therefore, even if the switch for controlling the energization between the bean ball and the battery is in the on state, the energizing circuit between the bean ball and the battery can be forcibly turned off regardless of the ON state.

As a result, it is possible to prevent further gas generation and leakage of the electrolytic solution from the battery connected in the opposite direction to the others, and it is possible to prevent deformation as a portable electric lamp or ignition and explosion to gas. You can stop it and keep it safe.

[Brief description of drawings]

FIG. 1 is a side sectional view of a waterproof portable electric lamp of the present invention.

FIG. 2 is a partially enlarged cross-sectional view of a rear portion of a body case of the portable electric lamp.

FIG. 3 is a side sectional view of a conventional waterproof portable electric lamp.

[Explanation of symbols]

 1 Front Base 2 Bean Ball 3 Reflector 4 Dry Battery 5 Battery Storage 6 Body Case 7 Switch 8 O-Ring 9 Bean Ball Socket 10 Lead Piece 11 Holding Tool 12 Pressure Switch 13 Pressure Switch Storage Chamber 14 Partition Wall 15 Lead Wire 16 Vent

Claims (1)

[Claims] 1. A front base provided with a lens, a reflector having a bean ball arranged in the center, a main body case having a battery storage portion for internally storing three or more power supply batteries connected in series, and the beans. A switch for controlling the energization between the ball and the battery, and a pressure switch provided in the main body case from the on state to the off state when the case internal pressure rises to a predetermined pressure value, the pressure switch A waterproof portable electric lamp that is connected in series to a series energizing circuit including the miniature ball, a battery, and an energization control switch for these.