JP7275357B1 - backpack and respirator - Google Patents

Abstract

A backpack useful when entering a vertical hole is provided. A backpack 300 to which a gas cylinder 250 is attached and carried by a wearer 201, comprising a main body 330 to which the gas cylinder 250 is attached, and a face piece attached to the main body 330 and attached to the wearer 201 for the gas of the gas cylinder 250. and an air supply line 210 for feeding to 11 . The air supply line 210 is configured to be bendable within the main body 330, and is used to supply gas to the wearer 201 using the air supply line 210 while the wearer 201 is carrying the backpack 300 on their back. Can be used in the use state and in the second use state in which the air supply line 210 is bent and gas is supplied to the wearer 201 using the air supply line 210 while the wearer 201 is positioned under the backpack 300. is. [Selection drawing] Fig. 8

Description

The present disclosure relates to backpacks and respirators.

Firefighters perform rescue operations in dangerous places such as fire sites. Therefore, firefighters wear backpacks with respirators when conducting rescue activities.

Such a backpack is disclosed, for example, in Japanese Patent Laying-Open No. 2019-205784 (Patent Document 1).

JP 2019-205784 A

Conventional backpacks have the problem that it is difficult to enter narrow vertical holes such as manholes.

According to one aspect, a backpack to be worn by a wearer to which a gas canister is attached, comprising a main body to which the gas canister is attached, and an air supply line attached to the main body for delivering gas from the gas canister to the wearer. The air supply line is configured to be bendable within the main body, and a first use state in which gas is supplied to the wearer using the air supply line while the wearer is carrying the backpack on their back, and a supply state. It can be used in a second state of use in which the air line is curved to supply gas to the wearer using the air supply line while the wearer is positioned under the backpack.

The backpack configured in this manner is used in the second usage state in which the air supply line is bent and gas is supplied to the wearer using the air supply line while the wearer is positioned under the backpack. It is possible. Therefore, when entering a narrow vertical hole such as a manhole, the wearer can enter the vertical hole by allowing the wearer to enter first and positioning the backpack so that it is positioned above the wearer.

Preferably, the backpack further includes a pressure detection line for detecting pressure fluctuations in the wearer's mask, and the pressure detection line is configured to be bendable within the main body so that the wearer can carry the backpack on his/her back. A first state of use in which pressure fluctuations in the facepiece are detected using the pressure detection line in the state where the pressure detection line is worn, and a pressure detection line is used in a state in which the pressure detection line is bent and the wearer is positioned under the backpack. It can be used in a second state of use for detecting pressure fluctuations within the face piece.

In this case, it is possible to provide a backpack having a respirator with a pressure test line. It is possible to enter the pit using the backpack.

Preferably, the main body has an upper portion positioned toward the wearer's neck and a lower portion positioned toward the wearer's waist, and the air supply line and the pressure detection line are bendable at the lower portion.

In this case, the air supply line and the pressure detection line can be bent at the lower part so that they can be connected from the lower part to the wearer located therebelow at a short distance.

The upper part of the body is provided with a first protrusion with a first hole and a second protrusion with a second hole, wherein the first protrusion and the two protrusions are spaced apart from each other. The distance between the first protrusion and the second protrusion is smaller than the total width of the air supply line and the pressure detection line, and the first use state changes to the second use state Sometimes, an air supply line and a pressure test line are passed through the gap between the first protrusion and the second protrusion and bent downward.

In this case, the air supply line and the pressure detection line are held by the first projecting portion and the second projecting portion in the first state of use, and the air supply line and the pressure test line are taken out from the gap when shifting to the second state of use. Therefore, it is possible to reliably protect the air supply line and the pressure detection line in the first state of use.

The respirator comprises any of the backpacks described above and a face piece that is supplied with gas from the backpack and covers the wearer's face,

FIG. 1 is a perspective view of a wearer 201 wearing a facepiece 11 and a backpack 300 according to the embodiment. FIG. 2 is a perspective view of the wearer 201 wearing the face piece 11 and the backpack 300 according to the embodiment. FIG. 3 is a diagram of the wearer 201 with the seat 240 lifted. FIG. 4 is a perspective view showing a first use state of backpack 300 according to the embodiment, viewed from wearer 201 side. FIG. 5 is a perspective view showing a second usage state of the backpack 300 according to the embodiment, viewed from the wearer 201 side. FIG. 6 is a front view of backpack 300 according to the embodiment, showing a second usage state, with the cover of lower portion 332 removed and viewed from the side of gas cylinder 250 . FIG. 7 is a front view showing an enlarged first protrusion 336 and second protrusion 337 provided at the upper end of backpack 300 according to the embodiment. FIG. 8 is a diagram showing the arrangement of the backpack 300 and the wearer 201 in the second state of use when entering the vertical hole 1000 . FIG. 9 is a diagram showing the arrangement of the backpack 300 and the wearer 201 in the first state of use when entering the vertical hole 1000 .

Hereinafter, each embodiment according to the present invention will be described with reference to the drawings. In the following description, identical parts and components are given identical reference numerals. Their names and functions are also the same. Therefore, detailed description of these will not be repeated.

1 and 2 are perspective views of a wearer 201 wearing a facepiece 11 and a backpack 300 according to the embodiment. FIG. 3 is a diagram of the wearer 201 with the seat 240 lifted.

As shown in FIGS. 1 to 3, it is a perspective view of a wearer 201 wearing a facepiece 11 and a backpack 300 according to the embodiment. A wearer 201 is wearing protective clothing 200 . The head of the wearer 201 is protected by the helmet 230 , the facepiece 11 and the sicolo 240 . A wearer 201 carries a backpack 300 on his or her back. A gas cylinder 250 is attached to the backpack 300 . No pressure demand valve is provided on the body front surface 241 or the face piece 11 of the protective clothing 200 .

Backpack 300 extends from upper portion 331 to lower portion 332 . A gas cylinder 250 extending from an upper portion 331 toward a lower portion 332 is fixed to the backpack 300 with a band 251 . The tip of the gas cylinder 250 is inserted between the two rod-shaped parts 304 and 305 of the backpack 300 . A breathing gas containing oxygen, such as air, is compressed and filled into the gas cylinder 250 as an intake gas at a pressure higher than the atmospheric pressure.

A bypass valve switch 301 and a positive pressure lock switch 302 are provided on the lower portion 332 of the backpack 300 . A bypass valve switch 301 is a switch for guiding the high-pressure gas discharged from the gas cylinder 250 to the facepiece 11 without passing through the pressure demand valve.

The positive pressure lock switch 302 is for stopping the positive pressure supplied from the air supply line 210 to the face piece 11 . When the wearer 201 removes the mask 11, the gas from the air supply line 210 continues to be supplied to the mask 11, so the supplied gas is not used and is released to the atmosphere. In order to prevent this, the positive pressure lock switch 302 is operated to cut off the supply of gas from the air supply line 210, thereby suppressing wasteful consumption of gas.

A guard bar 306 is provided at the lower portion 332 of the backpack 300 . The guard bar 306 protects the lower part 332 of the backpack 300 and allows the backpack 300 to stand on its own on the ground.

The facepiece 11 is used by being worn on the head of the human body. In the worn state, the facepiece main body 21 is configured to cover the wearer's face, and the mask main body 21 is fixed to the wearer's head. and a drawstring 22 for

The facepiece main body 21 includes a front plate 31 which is a colorless and transparent plate-like member having a size capable of covering the face of a human body, and the front plate 31, when worn, is positioned in front of the wearer's face and from the wearer's face. and a support 32 that provides support at appropriate intervals. The front plate 31 is a member also called an eyepiece.

A rotating mechanism 100 is attached to the face piece 11 . The rotation mechanism 100 is a member located between the air supply line 210 and the pressure detection line 220 and the front plate 31 . One end of rotation mechanism 100 is connected to air supply line 210 and pressure detection line 220 . The other side of the rotation mechanism 100 is connected to the front plate 31 .

FIG. 4 is a perspective view showing a first use state of backpack 300 according to the embodiment, viewed from wearer 201 side. FIG. 5 is a perspective view showing a second usage state of the backpack 300 according to the embodiment, viewed from the wearer 201 side. FIG. 6 is a front view of backpack 300 according to the embodiment, showing a second usage state, with the cover of lower portion 332 removed and viewed from the side of gas cylinder 250 .

As shown in FIGS. 4-6, the backpack 300 has a main body 330. As shown in FIG.
Body 330 extends longitudinally from upper portion 331 to lower portion 332 . A pair of first protrusion 336 and second protrusion 337 are provided on the upper portion 331 . A belt hole 338 is provided in the first protrusion 336 . A belt hole 339 is provided in the second protrusion 337 .

Upper portion 331 refers to the upper longitudinal half and lower portion 332 refers to the lower longitudinal half. That is, the main body 330 has an upper portion 331 located on the wearer's neck side and a lower portion 332 located on the wearer's waist side.

The main body 330 is provided with four cushions 307 for positioning the cylinders. A lid 335 is provided between the cushions 307 .

The main body 330 is provided with the connector 310 . The connector 310 is rotatably provided with respect to the main body 330 about the rotation axis. A joint 315 and a connector 314 are provided at the tip of the connector 310 . Connector 314 is connected to gas cylinder 250 .

A projecting portion 303 is provided on the main body 330 . A belt hole 309 is formed in the projecting portion 303 . The projecting portion 303 is provided so as to cover the bypass valve switch 301 and the positive pressure lock switch 302 .

A hose 312 is connected to the body 330 . A display device 313 is attached to the tip of the hose 312 . A display device 313 displays the remaining amount of air or residual pressure in the gas cylinder 250 .

The difference between the backpack 300 in the first state of use in FIG. 4 and the backpack 300 in the second state of use in FIG. In the first use state shown in FIG. 4, the air supply line 210 and the pressure detection line 220 are positioned so as to be sandwiched between the first projecting portion 336 and the second projecting portion 337. 5, the air supply line 210 and the pressure detection line 220 are not sandwiched between the first projecting portion 336 and the second projecting portion 337. As shown in FIG. As a result, it is possible to freely move the air supply line 210 and the pressure detection line 220 in the second use state of FIG. Both the air supply line 210 and the pressure detection line 220 are constructed of materials that can accommodate such movement. Both the air supply line 210 and the pressure detection line 220 are flexible. Also, the air supply line 210 and the pressure detection line 220 may be configured by connecting metal pipes with universal joints.

It is preferable that the places where the air supply line 210 and the pressure detection line 220 are bent are below two-thirds of the length from the top end to the bottom end of the main body 330 . More preferably, the location where the air supply line 210 and the pressure detection line 220 are bent is on the lower portion 332 side of the boundary between the upper portion 331 and the lower portion 332 . The boundary between upper portion 331 and lower portion 332 is the midpoint between the upper and lower ends of the body.

While the air supply line 210 and the pressure detection line 220 are positioned between the pair of guide plates 351 and 352 in the first state of use, the air supply line 210 and the pressure detection line 220 are positioned in the second state of use. The line 220 is not positioned between the pair of guide plates 351,352. In the first state of use, the air supply line 210 and the pressure detection line 220 are located between the guide plates 351 and 352 on the side of the gas cylinder 250 from the first projecting portion 336 and the second projecting portion 337 . On the other hand, in the second state of use, the portion positioned between the guide plates 351 and 352 in the first state of use moves toward the wearer 201 .

In the second state of use, the air supply line 210 and the pressure detection line 220 extend downward.

The pressure demand valve 380 has the function of supplying the facepiece 11 with slightly higher pressure air than the atmospheric pressure in response to breathing.

Since the pressure demand valve 380 is connected to the facepiece 11 by the pressure detection line 220, the pressure inside the case of the pressure demand valve 380 fluctuates according to the wearer's 201 breathing. When the pressure of the case fluctuates, the diaphragm receives the pressure fluctuation and deforms its shape. An air supply port of the pressure demand valve 380 is connected to the face piece 11 by an air supply line 210 . The air supplied to the face piece 11 causes the pressure inside the face piece 11 to fluctuate, and the fluctuating pressure is detected at the pressure detection port in the pressure demand valve 380 via the pressure detection line 220, and the diaphragm moves due to this pressure fluctuation. Body 330 is provided with a drain plug. Water accumulated in the pressure demand valve 380 can be drained by opening the drain plug.

In FIGS. 1 and 2, the die 240 is lowered, so the rotation mechanism 100 does not appear, but in FIG. expose. Air supply line 210 and pressure test line 220 are preferably located on the left side of wearer 201 . This is because the wearer 201 carries the fire-extinguishing hose on the right shoulder, and the provision of the air supply line 210 and the pressure detection line 220 on the right side interferes with the fire-extinguishing hose.

FIG. 7 is a front view showing an enlarged first protrusion 336 and second protrusion 337 provided at the upper end of backpack 300 according to the embodiment. As shown in FIG. 7, the air supply line 210 and the pressure detection line 220 are arranged in the space between the pair of guide plates 351 and 352 in the first state of use. In order to prevent the air supply line 210 and the pressure detection line 220 from deviating from this position, the distance W1 between the first projecting portion 336 and the second projecting portion 337 should be equal to the width W2 of the air supply line 210 and the pressure detection line 220. is preferably smaller than the sum of the width W3 of .

FIG. 8 is a diagram showing the arrangement of the backpack 300 and the wearer 201 in the second state of use when entering the vertical hole 1000 . The backpack 300 is removed from the wearer 201 when entering the vertical hole 1000 . Then, the backpack 300 is set to the second usage state. A rope 1010 is passed through the belt holes 338 and 339 . The wearer 201 enters the vertical hole 1000 . The backpack 300 is positioned above the wearer 201 . The backpack 300 is suspended by ropes 1010 . When the wearer 201 moves downward, the rope 1010 is sent out to move the backpack 300 downward according to the amount of downward movement of the wearer 201 . As a result, the backpack 300 can be inserted into the vertical hole 1000 having an inner diameter that allows the wearer 201 to enter.

FIG. 9 is a diagram showing the arrangement of the backpack 300 and the wearer 201 in the first state of use when entering the vertical hole 1000 . In the conventional backpack 300, only the first state of use is permitted, and the second state of use as shown in FIG. 8 is not permitted. Therefore, when entering the vertical hole 1000, it was necessary to line up the wearer 201 and the backpack 300 in the horizontal direction. As a result, although the vertical hole 1000 with a large inner diameter can be entered, the vertical hole 1000 with a small inner diameter cannot be entered.

The respirator in this embodiment is a so-called open respirator. In the open type respirator, the air in the gas cylinder 250 is supplied to the face piece 11 via the pressure reducing valve, the pressure demand valve 380 or the demand valve. Since the air inside the facepiece 11 is exhausted to the atmosphere, it is not returned to the pressure demand valve 380 . On the other hand, it is possible to apply the above configuration to a closed circulation respirator. A closed circuit respirator provides a closed circuit. Therefore, the oxygen in the gas cylinder 250 is supplied to the closed circuit via the pressure reducing valve and the demand valve. Gas is supplied to the facepiece 11 from the closed circuit and gas is returned from the facepiece 11 to the closed circuit. The carbon dioxide of the returned gas is absorbed by the carbon dioxide absorbent, and the gas corresponding to the deficit is supplied to the closed circuit.

In this embodiment, an example in which the air supply line 210 and the pressure detection line 220 are provided is shown, but at least the air supply line 210 is provided, and the pressure detection line 220 is not necessarily provided.

Appendix 1
A backpack 300 to which a gas cylinder 250 is attached and carried by a wearer 201, comprising a main body 330 to which the gas cylinder 250 is attached, and a mask 11 attached to the wearer 201, which is attached to the main body 330 and carries the gas of the gas cylinder 250. and an air supply line 210 for delivery. The air supply line 210 is configured to be bendable within the main body 330, and gas is supplied to the wearer 201 using the air supply line 210 while the wearer 201 is carrying the backpack 300 on their back. A first use state and a second state in which gas is supplied to the wearer 201 using the air supply line 210 in a state where the air supply line 210 is curved and the wearer 201 is positioned under the backpack 300 can be used in the state of use.

Appendix 2
It further includes a pressure detection line 220 for detecting pressure fluctuations in the mask 11 of the wearer 201 , and the pressure detection line 220 is configured to be bendable within the main body 330 , so that the wearer 201 can be The first state of use in which pressure fluctuations in the facepiece 220 are detected using the pressure detection line 220 while the wearer 201 is carrying the shoulder strap 300, 3. The backpack 300 of claim 1, usable in a second condition of use in which the pressure sensing line 220 is used to detect pressure fluctuations within the facepiece 11 in a down position.

Appendix 3
The main body 330 has an upper portion 331 positioned on the neck side of the wearer 201 and a lower portion 332 positioned on the waist side of the wearer 201 , and the air supply line 210 and the pressure detection line 220 are curved at the lower portion 332 . The backpack of clause 2, which is possible.

Appendix 4
The upper portion 331 of the main body 330 is provided with a first protrusion 336 having a belt hole 338 as a first hole and a second protrusion 337 having a belt hole 339 as a second hole. , the first protrusion 336 and the second protrusion 337 are spaced apart from each other, and the distance W1 between the first protrusion 336 and the second protrusion 337 is equal to the air supply line 210 and the total width W2+W3 of the pressure detection line 220, and between the first projecting portion 336 and the second projecting portion 337 when shifting from the first state of use to the second state of use 4. The backpack according to appendix 2 or 3, wherein the air supply line 210 and the pressure detection line 220 are passed through the gap one by one and bent downward.

Appendix 5
A respirator, comprising: the backpack according to any one of appendices 1 to 4; and a facepiece supplied with gas from the backpack and covering the wearer's face.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all changes within the scope and meaning equivalent to the scope of the claims.

11 face piece, 21 face piece main body, 22 tightening string, 31 front plate, 32 support, 100 rotation mechanism, 200 protective clothing, 201 wearer, 210 air supply line, 220 pressure inspection line, 230 helmet, 240 heart, 241 body front , 250 gas cylinder, 251 band, 300 backpack, 301 bypass valve switch, 302 positive pressure lock switch, 303 projecting portion, 304, 305 rod-shaped portion, 306 guard bar, 307 cushion, 309, 338, 339 belt hole, 310 connector , 312 hose, 313 display device, 314 connector, 315 joint, 330 main body, 331 upper portion, 332 lower portion, 336 first projecting portion, 337 second projecting portion, 380 pressure demand valve, 1000 vertical hole, 1010 rope.

Claims (3)

A backpack carried by the wearer to which a gas cylinder is attached,
a main body to which the gas cylinder is attached;
an air supply line attached to the main body for sending gas from the gas cylinder to a face piece attached to the wearer;
a first use state in which the air supply line is configured to be bendable within the main body, and gas is supplied to the wearer using the air supply line while the wearer is carrying the backpack; and in a second state of use in which the gas is supplied to the wearer using the air supply line in a state where the air supply line is curved and the wearer is positioned under the backpack ,
It is further equipped with a pressure detection line that detects pressure fluctuations in the wearer's mask,
The pressure detection line is configured to be bendable within the body,
The first state of use in which the pressure detection line is used to detect pressure fluctuations in the mask while the wearer is carrying the backpack, and the pressure detection line is bent to allow the wearer to move the backpack. It can be used in the second usage state in which the pressure detection line is used to detect pressure fluctuations in the face piece in a state of being positioned below,
A first protrusion having a first hole and a second protrusion having a second hole are provided on the upper part of the main body, and the first protrusion and the second protrusion are mutually are spaced apart from each other, the distance between the first projection and the second projection being smaller than the total width of the air supply line and the pressure detection line, from the first state of use When transitioning to the second use state, the air supply line and the pressure detection line are bent downward by passing through the gap between the first protrusion and the second protrusion one by one. equipment. 2. The apparatus according to claim 1 , wherein the main body has an upper portion located on the wearer's neck side and a lower portion located on the wearer's waist side, and the air supply line and the pressure detection line are bendable at the lower portion. Backpack as described. A respirator comprising: the backpack according to claim 1 or 2 ; and a facepiece supplied with gas from the backpack and covering the wearer's face.

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