JPH07232697A - Life jacket for work - Google Patents

Abstract

PURPOSE:To provide a life jacket for work which is constituted to expanded a plurality of main air chambers by a single air filling device and prevent buoyancy from being rendered ineffective even when one of a plurality of the air chambers is broken. CONSTITUTION:A life jacket for work comprises a plurality of main air chambers 1 and 2; and an air filling device 14 to fill the main air chambers with air. An auxiliary air chamber 12 communicated with a plurality of the main air chambers is provided. The main air chamber and the auxiliary air chamber are intercommunicated through a check valve 13 so as to prevent gas for expansion from reversely flowing from the main chamber and the air filling device is operated to fill the auxiliary air chamber with air. Thus, in the expansion type life jacket for work, the auxiliary air chamber 12 is provided and the main air chamber 1 is filled with air through the auxiliary air chamber 12. Since the auxiliary air chamber 12 and the main chambers 1 are intercommunicated through the check valve 13, advantages wherein a plurarity of the main air chambers 1 are filled with air through the single air filling device are provided. Further, advantages wherein even when either the main air chamber 1 or the auxiliary air chamber 12 is broken, buoyancy is prevented from being ineffective are provided.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a work life garment, and more particularly to a plurality of air chambers, wherein the plurality of air chambers are inflatable from a single inflator, and The present invention relates to a work life garment capable of ensuring buoyancy even if one of the two is damaged.

[0002]

2. Description of the Prior Art Work life garments are provided in case of accidental accidents, such as solid life garments and inflatable life garments, which are worn when working on harbor work or inland sea fishing boats.

The solid type life jacket has a substance having buoyancy built therein, and since it reliably retains buoyancy but is bulky, it has a drawback of poor workability. On the other hand, the inflatable life jacket has a structure in which it expands when it is dropped into the sea due to an accident, so it is in a contracted state during work, and has the advantage of excellent workability If it is damaged, it loses its buoyancy and is not reliable as a life jacket.

In order to eliminate the above-mentioned drawbacks, the inflatable life jacket provided for a ship sailing in the open sea is obliged to have two independent air chambers. Allowed in a single air chamber life jacket. There are 2 inflatable life jackets for use in the open ocean as described above.
It is composed of individual air chambers. By pulling the operation cable connected to the two compressed gas cylinders provided in each air chamber, the compressed gas in the cylinder is injected into each air chamber and expanded. The reason why the air chambers are independently configured in this way is that the wearer of the life jacket can be safely floated even if either of the air chambers does not expand.

The work life garment is also preferably a life garment having a plurality of air chambers as described above, but an inflator (cylinder) is also required for each air chamber, which is expensive. There is a drawback that

The present invention has been made in view of the above-mentioned problems, and it is possible to expand a plurality of main air chambers by a single charging device, and even if one of the plurality of air chambers is damaged. The purpose is to provide a work life jacket that does not lose buoyancy.

[0007]

In order to solve the above problems, the working life garment according to the present invention has a plurality of main air chambers, and an inflator for inflating the main air chambers. A life jacket for work, comprising a sub air chamber communicating with the plurality of main air chambers, wherein the main air chamber and the sub air chamber are respectively so that inflation gas does not flow backward from the main air chamber. The charging device is characterized in that the charging device communicates with a check valve and the charging device can charge the auxiliary air chamber.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an exploded front view of an embodiment of a work life garment according to the present invention, and FIG. 2 is a side view. As is clear from these figures, the life garment according to this embodiment is a separate body. The main air chambers 1 and 2 have linear portions 3 and 4 and shoulder portions 5 and 6 connected to the linear portions 3 and 4, respectively. Then, the shoulders 5 and 6 are overlapped and integrated to form a life jacket. In the present invention, the auxiliary air chambers 12 are provided in the shoulder portions 5 and 6 of the main air chambers 1 and 2,
The main air chambers 1 and 2 are communicated with each other via check valves 13. The check valve 13 is a valve having a check function that allows gas to pass from the sub air chamber 12 to the main air chambers 1 and 2, but does not allow gas to pass from the main air chambers 1 and 2 to the sub air chamber 12. is there.

The charging device (gas cylinder) 14 is designed to charge the auxiliary air chamber 12 with gas. In addition, 10 and 11 are auxiliary air supply pipes.

FIGS. 3 to 5 are schematic views for explaining the operation of the working life jacket of the present invention. As is clear from FIG. 3, when the air is supplied from the air supply device 14, the sub air chamber 12 is filled with air. At this time, since the sub air chamber 12 communicates with the main air chambers 1 and 2 via the check valve 13, the main air chambers 1 and 2 are also filled with air and are in an expanded state.

When either of the main air chambers 1 and 2 (in this case, the main air chamber 1) is damaged and the damage hole 15 is formed, the gas is diffused into the atmosphere. At this time, the gas in the auxiliary air chamber 12 communicating with the main air chamber 1 and the check valve 13 leaks (the check valve functions because the gas pressure in the main air chamber 1 is lost. Therefore, the main air chamber 2 is filled with gas, and the check valve 13 effectively performs the check function by this gas pressure, so that the gas does not leak from the main air chamber 2. Therefore, the life jacket does not lose its buoyancy.

In the above description, the breakage of the main air chamber 1 has been described, but the same applies to the breakage of the main air chamber 2.

On the other hand, when the breakage hole 15 is formed in the sub air chamber 12, the gas in the sub air chamber 12 leaks as shown in FIG. 5, but the main air chambers 1 and 2 are filled with the gas. Since each check valve 13 works effectively, gas does not leak from the main air chambers 1 and 2. That is, the buoyancy of the life jacket is not lost.

FIG. 6 shows another specific example of the working life jacket of the present invention, which comprises a plurality of main air chambers 1-1, 1-2, 2-.
1, 2-2, and the main air chambers 1-1, 1-2,
2-1 and 2-2 communicate with the sub air chamber (air guide pipe) 16 via the check valve 13. The charging device 14 is communicated with the sub air chamber 16, and the main air chamber 1-
It is possible to charge 1, 1-2, 2-1, 2-2.

[0015]

As described above, the working life garment of the present invention is an inflatable life garment having a plurality of main air chambers, in which an auxiliary air chamber is provided and the main air chamber is inserted through the auxiliary air chambers. In addition to being charged with air, the auxiliary air chamber and the main air chamber are communicated with each other by a check valve, so that there is an advantage that a single air charging device can charge a plurality of main air chambers. Further, even if either the main air chamber or the auxiliary air chamber is damaged, the buoyancy is not lost.

[Brief description of drawings]

FIG. 1 is an exploded front view of a life jacket according to the present invention.

FIG. 2 is a side view of the life jacket of the present invention.

FIG. 3 is a schematic diagram for explaining the action of the life jacket according to the present invention.

FIG. 4 is a schematic view for explaining the action of the life jacket according to the present invention.

FIG. 5 is a schematic view for explaining the action of the life jacket according to the present invention.

FIG. 6 is a schematic view for explaining the action of a life jacket according to another embodiment of the present invention.

[Explanation of symbols]

 1 Main air chamber 2 Main air chamber 3 Straight part 4 Straight part 5 Shoulder part 6 Shoulder part 12 Shoulder part 12 Sub air chamber 13 Check valve 14 Filling device 15 Damage hole 16 Sub air chamber

Claims (1)

[Claims] 1. A life jacket for work, comprising a plurality of main air chambers and comprising an inflator for inflating the main air chambers, the auxiliary air chamber communicating with the plurality of main air chambers. And the main air chamber and the sub air chamber communicate with each other via check valves so that the expansion gas does not flow backward from the main air chamber, and the refueling device is connected to the sub air chamber. Work life jacket characterized by being inflatable.