JP2589511Y2 - Degassing valve for underwater equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vent valve for a device used underwater, and more particularly, to a device provided between a battery chamber located inside a device for underwater use and an outer wall of the device. The present invention relates to a provided vent valve.

[0002]

2. Description of the Related Art Conventionally, as an example of providing a vent valve,
Japanese Unexamined Utility Model Publication No. 56-115863 by the present applicant is known. However, according to this publication, a vent valve is provided on a part of the peripheral wall of a battery storage box for land use, not for underwater use. When a vent valve is provided between the battery chamber located inside the underwater equipment and the outer wall of the equipment, water leaks from the outside of the equipment to the internal battery chamber through the vent valve in the water. It is necessary to consider the situation when the situation occurs. Until now, there is no useful method, so it has not been put to practical use yet.

[0003]

There are the following problems when a battery is stored in a battery accommodating chamber of the device and the device is used. The battery generates heat for some reason, the electrolyte inside the battery evaporates, the inside of the battery becomes high pressure, and gas is released to the outside of the battery. Will be affected. In order to prevent this, it is sufficient to shut off the battery chamber from the surrounding electric circuits and make it airtight.However, when the above-mentioned gas release amount increases, the battery chamber may not be airtight. The air pressure in the room rises and the containment room bursts.

[0004] In order to solve the danger, the above-mentioned gas vent valve is required. However, in the case of underwater equipment, when the gas vent valve is activated to release gas to the outside of the equipment, that is, into the water, the same equipment is used. Depending on the position of the device, water may enter the internal battery compartment from the outside of the device through the vent valve that opens when gas escapes, causing parts such as batteries to corrode, There is a risk that the electric circuit will be destroyed.

The present invention has been made in view of these problems, and has been made in consideration of the above problems, and has been made in view of the above circumstances. The purpose is to obtain.

[0006]

According to the present invention, in order to solve the above-mentioned problems, according to FIG. 1, a hermetic seal is provided inside an underwater equipment (A) equipped with an electric circuit or the like. The battery housing room (B) is provided, and the underwater device is provided on a peripheral wall of the battery housing room (B) including a wall (3) integrally assembled with a part of a peripheral wall of the underwater device (A). (A)
An opening (3c) for communicating the outside of the device with the battery housing chamber (B) is provided in the integral wall (3), and the opening (3c) in the outer wall of the underwater equipment (A) is provided. ), A movable valve (6a, 6b) disposed from the portion (3) located around the opening (3c) to the opening (3c), and the opening (3c).
Urging members (6c, 7) for applying an urging force to the movable valves (6a, 6b) to move the underwater equipment (A) from the outer wall of the underwater equipment (A) toward the battery storage chamber (B) via
Of the underwater device (A) by being sandwiched between a portion (3) of the underwater device (A) around the opening (3c) and the movable valve (6a, 6b). An elastic sealing member (4) for keeping the battery housing (B) waterproof and airtight with respect to the outside;
When the room air pressure exceeds a predetermined value, the movable valve (6a, 6
b) is activated while resisting the urging force of the urging members (6c, 7), and the battery chamber (B) is activated via the urging members (6c, 7) and the elastic seal member (4). A) a first vent valve (6a, 6b, 7, 4) configured to release gas from the interior of the submersible equipment (A) from the room; A portion (3a) located around the opening (3c) is provided, and the opening (3
c) a second vent valve (11) comprising a gas-permeable and water-impermeable filter (11) for covering the same.

[0007]

The wall portion (3) of the peripheral wall of the battery housing chamber (B), which coincides with a part of the peripheral wall of the underwater equipment (A), is shown in FIG.
In this case, a sealing lid (3) for sealing the battery chamber (B) is used, but the present invention is not limited to the sealing lid (3) described above.

A portion (6a) of the movable valve (6a, 6b) in the figure located on the outer wall of the underwater equipment (A) is covered with a cap (5).
The movable valve (6a, 6a,
6b) for protection.
It is not necessary to provide. The part (3) around the opening (3c) and the movable valve (6) of the underwater equipment (A) shown in FIG.
a, 6b), an elastic seal member (4) is sandwiched between the underwater equipment (A) to keep the battery chamber (B) waterproof and airtight with respect to the outside of the underwater equipment (A). The urging members (6c, 7) of FIG. 1 apply an urging force for moving the underwater equipment (A) from the outer wall to the battery storage chamber (B) through the opening (3c) through the opening (3c). The movable valve inside (6a,
In order to provide 6b), the following operation is obtained.

[0009] in water, depending placed posture of said apparatus (A), a movable valve (6a, 6b) is without suspended by the biasing force of the above, as shown in FIG. 2, the action of the water pressure P ₁ As a result, the movable valves (6a, 6b) are pushed toward the inside of the device (A), and the above-mentioned elastic seal member (4) is brought into contact with the portion (3) around the opening (3c) and the movable valves (6a, 6b). 1), so that the battery chamber (B) in FIG. 1 is completely sealed, and the above-mentioned water droplets do not pass through the opening (3c), and water leaks into the battery chamber (B). Can be prevented.

[0010] A portion (3a) of the peripheral wall of the battery accommodating chamber (B) located around the opening (3c) in FIG. ), And its filter (11)
Since the gas passes through only the gas without passing through the liquid, the following operation is obtained. The above-mentioned battery generates heat for some reason, the battery releases gas, and the storage chamber (B)
When the air pressure rises, even in water, the above-mentioned gas passes through the gas-impermeable and water-impermeable filter (11), and the movable valve (6a, 6b) resists the above-mentioned biasing force by the air pressure of the gas while the device ( It moves to the outside (underwater) of A), and the movement causes a gap between the elastic seal member (4) and the space as shown in FIG. At this time, the movable valve (6a, 6b) allows the gas in the battery accommodating chamber (B) to pass through the air-impermeable and water-impermeable filter (11) and the above-described gap, and to the outside (underwater) of the device (A). And the discharge reduces the indoor pressure of the battery storage chamber (B), thereby protecting the storage chamber (B).

When releasing gas, the apparatus (A)
Although it is conceivable that water droplets from the outside pass through the above-described gap, they are blocked by the air-permeable and water-impermeable filter (11) in FIG. 1, so that water droplets do not enter the battery storage chamber (B), Corrosion can be prevented. Therefore, as described above, it is possible to obtain a gas vent valve of an underwater appliance for safely releasing gas in water and preventing water leakage even when exposed to high water pressure.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing a state in which a gas vent valve is provided on a wall 3 of the peripheral wall of the battery housing chamber B that coincides with a part of the peripheral wall of the underwater device A. In the figure, a wall 3 equipped with a vent valve is provided to seal the battery chamber B.
It is a sealing lid detachably provided on the peripheral wall of the underwater equipment A, and the lid 3 is provided with an opening 3c as shown in the figure. A valve shaft 6b is loosely fitted in the opening 3c, and disks 6a and 6c are integrally provided at both ends of the valve shaft 6b. Among them, the disk 6a located on the outer wall of the sealing lid 3 constitutes the aforementioned movable valve together with the valve shaft 6b.

An elastic ring 4 is sandwiched between a portion of the outer wall of the lid 3 around the opening 3c and the disk 6a, and the elastic ring 4 is used as the above-mentioned elastic seal member. . A coil spring 7 is sandwiched between the inner wall of the sealing lid 3 and the disk 6c so as to be fitted to the valve shaft 6b.
The coil spring 7 and the disk 6c constitute the above-mentioned urging member for applying an urging force for moving the cell toward the battery accommodating chamber B to the above-mentioned movable valves 6a and 6b, and constitute the movable valves 6a and 6b.
b, the first sealing valve is constituted by the elastic sealing member 4 and the urging members 6c and 7 described above.

A hollow cylinder 3a is provided on the inner wall of the lid 3 around the opening 3c, and the above-mentioned disk 6c is attached to the hollow cylinder 3c.
a are arranged with a gap on the inner peripheral surface. Hollow cylinder 3a
An air-permeable and water-impermeable filter 11 is fixed to an end portion of the holding ring 12 by a holding ring 12, and an opening 12a is provided in a portion of the holding ring 12 facing the inner space of the hollow cylinder 3a via the filter 11. Have been.

The above-described air-permeable and water-impermeable filter 11 is used as the second vent valve, and is made of a cloth in which stitches are finely woven using special fine fibers. It is a material that cannot pass through substances with a molecular structure but can pass through substances smaller than the eyes. Therefore, the filter 11 used in the present invention has a characteristic that does not allow the passage of large molecules such as water molecules and allows the passage of small molecules of gas.

Above the disk 6a in FIG. 1, the male screw 5a of the protective cap 5 is screwed into the female screw 3d of the sealing lid 3, and the protective cap 5 is protected from external impacts by the external thread. When the above-mentioned protective cap is used in water, an opening 5 is formed on the upper part of the cap 5 so that the gas is released from the device A.
b is provided.

A battery 8 is provided in the battery chamber B in FIG.
Is stored. After the pack 13 is stored, the female thread of the sealing lid 3 is screwed to the male thread 1 of the device A via the waterproof ring 2 in the figure, and the battery chamber B is sealed by this screwing. At the same time, the battery pack 13 is fixed to the inside of the accommodation room B without rattling by the ribs 3b provided on the inner wall of the lid 3.

The battery pack 13 may contain a plurality or a single battery. Also, a battery containing a commercially available battery or a battery containing a rechargeable secondary battery may be used. However, in the present invention, the battery pack 1
It is assumed that a battery may be directly provided in the battery storage chamber B without using the battery 3. Electrodes 9 (at least two) for receiving a power output terminal 10 (at least two terminals of plus and minus of a power source) of the battery pack 13 are integrally assembled on a part of the inner wall of the battery housing B. . The electrode 9 is assembled so that no gap is formed in the battery housing chamber B by a method such as insert molding or press-fitting or a waterproof shaft structure using an O-ring. Gas does not leak around the accommodation room B. Further, the electrode 9 is electrically connected to a circuit (not shown) inside the device by a wire or the like, and supplies power to the circuit.

In consideration of the case where the battery releases flammable gas for some reason, the connection between the power output terminal 10 and the electrode 9 of the battery pack 13 is configured so that the pins are wrapped in a socket having a spring property. The contact between them is made not at one point but at multiple points. Thereby, the battery pack 1
Even if 3 moves due to vibration or the like, the connection between them does not open and no spark occurs. Therefore, there is no ignition of the combustible gas.

Also, when the sealing lid 3 is removed from the device A, if the lid 3 is opened and the internal gas is replaced with external air, the connection between the electrode 9 and the power output terminal 10 of the battery pack 13 is made. Is still connected, no spark is generated, and no damage occurs in the battery storage chamber B. Next, the operation of the gas vent valve will be described. Equipment A
1 is placed in the water, the movable valves 6a and 6b are drawn toward the battery chamber B by the urging forces of the urging members 6c and 7 in FIG. There never float in the water, as shown in FIG. 2, the water pressure P ₁ acts on a portion 6a of the movable valve 6a, 6b, the movable valve 6
Since the a and 6b are pushed in, the elastic ring 4 is brought into close contact with the above-mentioned part 6a and the outer wall of the lid 3, so that the opening 3c is sealed to prevent water from leaking into the device.

Since the urging members 6c and 7 pull the movable valves 6a and 6b toward the inside of the device A by the urging force, the battery temperature rises within a normal temperature range. Also, when the pressure in the battery chamber rises, the above-described movable valve 6a,
6b is not activated. Abnormal conditions such as the short circuit of the electric circuit of the device A and the continuous flow of overcurrent occur, the temperature inside the battery 8 rises abnormally, and gas is released from the battery 8 through the battery pack 13, and the battery When the chamber pressure P _{2 in the} storage chamber B is abnormally high, as shown in FIG. 3, the movable valve 6 is moved by the chamber pressure P ₂ through the opening 12 a of the holding ring 12 and the air-impermeable filter 11.
a and 6b are pressed toward the outside of the device A, and the pressing causes a gap between the elastic ring 4 and the gas (gas) in the room passes through the path as follows, and (Released in water).

In FIG. 2, a gap between the inner peripheral surface of the hollow cylinder 3a and the disk 6c, a gap between the peripheral surface of the valve shaft 6b and the opening 3c, and a gap between the elastic ring 4 and the disk 6a are respectively provided. The battery A is discharged to the outside (in the water) of the device A, so that the pressure in the battery housing B decreases, and the rupture of the battery housing B can be prevented. At this time, water enters the inside of the device A from the outside (underwater) of the device A through the same gap as described above, but is usually a minute amount like a water drop, and the water drop is as described above. The air-impermeable filter 11 stays in the hollow space of the hollow cylinder 3 a, so that the battery chamber B inside the device A is opened through the opening 12 a of the holding ring 12.
And the corrosion of the battery 8 can be prevented.

In order to remove water droplets that have entered the inner space of the above-mentioned hollow cylinder 3a, for example, the user goes up to land and moves the disk 6a to the device A.
In this state, it is sufficient to remove water drops through the above-mentioned gap, and to allow dry gas to flow out of the device A through the filter 11 from the battery storage chamber B side. Needless to say, the operation can be further facilitated by completely removing the water droplets and attaching an operation knob for pulling the disk 6a outward.

According to the above embodiment, even if the gas discharged from the battery is flammable, the electrical connection inside the battery chamber is made like the power output terminal 10 and the electrode 9 in FIG. In this case, there is no risk of ignition, and if the battery chamber is made airtight, gas will not enter the interior of the device from the room, which is safe. Also,
In the inner space of the aforementioned hollow cylinder 3a, gas (gas)
Since only a small amount of entering water drops enters the water when the water comes out of the inside, the above-described air-impermeable and water-impermeable filter 11 is not broken by the above-mentioned water drops.

Further, since the device is used underwater, the movable valves 6a and 6b, the disk 6c and the cover 3 may be made of a material which is hardly corroded, for example, stainless steel or plastic resin.

[0026]

[Effects of the Invention] As described above, according to the present invention, the above-mentioned biasing member can be used in both shallow and deep places in water.
The movable valve does not float, and the portion of the movable valve located outside the device is pushed toward the wall surface of the device by the action of water pressure, and the above-mentioned opening is sealed, so that It is possible to prevent water leakage into the battery storage chamber.

If the internal pressure of the battery chamber rises abnormally due to the gas released from the battery itself, the above-mentioned movable valve may protect the battery chamber to release the gas to the outside of the underwater equipment. Even at this time, water drops can be prevented from entering the battery storage chamber inside the device by the above-described air-permeable and water-impermeable filter, and water leakage can be prevented even when exposed to high water pressure.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a degassing valve and its periphery when installed in an underwater device according to an embodiment of the present invention.

2 is a cross-sectional view showing a state of a vent valve when being acted upon by the water pressure P _1.

In [3] when the pressure P ₂ of the battery housing chamber becomes abnormal exceeds a predetermined value, a cross-sectional view showing a state in which opening the vent valve by the pressure P _2.

[Explanation of symbols]

A Underwater equipment, B Battery compartment 3 Sealing lid for battery compartment, 4 Elastic ring, 6
Valve 7 Coil spring, 8 Battery, 11 Ventilation impermeable filter 12 Holding ring

Claims (3)

(57) [Scope of request for utility model registration] 1. A wall integrally provided with a part of a peripheral wall of the underwater device inside a submersible device in which an electric circuit or the like is provided. An opening for communication between the outside of the underwater device and the battery housing chamber is provided in the integral wall portion on a peripheral wall of the battery housing room including a portion, wherein the opening in the outer wall of the underwater device is provided; A movable valve disposed from the portion located around the portion to the opening, and the movable valve for urging force to move the outer wall of the underwater device from the outer wall of the underwater device toward the battery storage chamber through the opening. And a biasing member for providing the underwater device, the battery housing chamber is waterproofed to the outside of the underwater device by being sandwiched between a portion around the opening and the movable valve of the underwater device. And an elastic sealing member to keep it airtight. When the indoor pressure of the battery storage chamber exceeds a predetermined value, the movable valve is activated while opposing the urging force of the urging member, and the battery housing is started via the urging member and the elastic seal member. A first degassing valve configured to discharge gas from the chamber to the outside of the underwater equipment; and a portion of the peripheral wall of the battery accommodating chamber located around the opening, the opening being provided. A second vent valve comprising a vented water impervious filter for covering the vent valve; and a vent valve for underwater equipment. 2. A sealing lid detachably provided on a peripheral wall of the underwater device to partially seal the battery housing chamber, including a part of the peripheral wall of the underwater device, including the opening. The sealing lid has the first and second
The vent valve for underwater equipment according to claim 1, further comprising: a vent valve. 3. Even if the sealing lid is removed to open the battery storage chamber, the battery stored in the storage chamber
3. The vent valve for underwater equipment according to claim 2, wherein power can be supplied to the electric circuit inside the equipment.