WO2010128690A1

WO2010128690A1 - Personal life-saving device

Info

Publication number: WO2010128690A1
Application number: PCT/KR2009/002348
Authority: WO
Inventors: 박은숙; 이현정
Original assignee: Park Eun Suk; Lee Hyun Jung
Priority date: 2009-05-04
Filing date: 2009-05-04
Publication date: 2010-11-11

Abstract

The present invention relates to a personal life-saving device that enables floating on the water in case of a shipwreck, and more specifically, to a personal life-saving device which can be immediately operated to protect human life when the situation occurs. According to the present invention, a personal life-saving tool coupled to a means that fastens to a human body such as a backpack or belt and the like is immediately operated and spread by simply pulling an operation rope in case of emergencies mainly in water, thereby enabling safe floating on waves or severely fluctuating water. In order to achieve this, the present invention provides a known personal life-saving device which comprises a squib which is a triggering device operated by pulling an operation rope, flammable materials ignited by the squib, an expansion means which comprises a gas generator generating gas by the flammable materials, and an expansion part which jets the gas of the expansion means and is connected to a tube, wherein the above-mentioned expansion part and a plurality of tubes are connected by a flexible and bendable connection hose, and the plurality of tubes and the connection hose are connected by an air duct of which the diameter varies according to the order of expansion. Accordingly, the personal life-saving device of the present invention can be immediately operated by simply pulling the operation rope of the present invention which is installed to a means to be worn by humans such as a backpack, a belt, a life vest, water working clothes and the like, thereby enabling a rapid and safe escape in an emergency situation of distress at working areas on water, on a ship or the like, and thus is capable of saving precious human lives effectively.

Description

[Revision 16.07.2009 by Rule 26] Personal life-saving devices

The present invention relates to a personal lifesaving device, and more particularly to a personal lifesaving device to be able to float on the water in case of water distress.

Conventionally, personal life-saving devices have been proposed that can float on water during distress in the sea or river.

A representative example thereof may be viewed by Korean Utility Model Registration No. 310960 shown in FIGS. 1 and 2 (the name of the draft: life-saving device for distress; hereinafter referred to as 'quotation citation 1').

The distress 131 has a ball-shaped shape to protect the distress 131 during marine distress and maintain life even in long-distance drifting, and to have a space 132 inside which the distress 131 can fully enter. In constructing a lifesaving device for distress 130 to increase the survival probability is not exposed to water;

The lifesaving device 130 includes an upper plate 138 and a lower plate 139 which are provided by connecting an inner surface of the ring tube 136 having a cylindrical air passage 135 to the blocking film 137 so that air can be injected therethrough;

Hardness air poles

141 and 142 disposed at equal intervals with an air passage 140 to allow air to be injected between the upper and

lower plates

138 and 139;

Latitude air pole 143 is connected with the air passage 140 to maintain the rigidity of the entire lifesaving device 130 while maintaining the shape of the hardness air pole (141, 142) between the

air pole

141, 142; 144);

A barrier wall 145 attached to a space formed between the

longitudinal air poles

141 and 142 and the latitude air poles 143 and 144;

A door 147 provided on the top plate 138 so as to enter and exit the distress 131 and opened and closed by a zipper 146;

A leg tube 150 which is integrally connected to the lower plate 139 so that the distress 131 can be inserted into the leg so that the distress 131 can be moved during and after the acquisition;

The blocking film 137 of the lower plate 139 includes a core material 151 further provided for strength reinforcement;

The life saving device 130 further includes a conventional expansion means 155 for injecting air into the ring tube 136, the longitudinal air poles (141, 142) and the latitude air poles (143, 144) It is.

Therefore, the individual who boards the ship can carry it or equip it separately in the ship so that it can be used in emergency situations such as distress.In general, the air is removed to minimize the volume, and the emergency food or tools necessary for distress in advance It is preferable to insert.

When distress occurs in the above state, the distress 131 opens the door 147 provided on the upper plate 138 of the lifesaving device 130 to enter the space 132 inside the lifesaving device 30. After that, the door 147 is closed.

In this state, the distress 131 is able to jump freely while moving into the water by inserting the foot into the leg tube 150 is integrally provided on the lower plate 139, and after jumping into the water by using the expansion means 155 Air is injected into the ring tube 136, the

hardness air poles

141 and 142, and the latitude air poles 143 and 144 so that the lifesaving device 130 maintains a completely spherical shape so as to be injured on the surface of the water. do.

When the life preserver 130 maintains the spherical shape as described above, the distress 131 is detached from the leg tube 150 to maintain the upright or other comfortable posture inside the life preserver 130 to wait for rescue do.

Of course, when the temperature of the water is not low or the waves and the wind is not severe, open the door 147 provided on the top plate 138 to receive fresh air, and insert the foot into the leg tube 150 to the foot You may move as a movement.

Since the distress 131 is located inside the life preserver as described above, it is protected from the danger of waves, wind, and water, and more actively rescued using emergency food or rescue signal tools provided in the life preserver 130. It can be expected that the effect of increasing the probability of being rescued even in long-term drift can be expected.

In addition, another personal life preserver is shown in FIG.

As can be seen from the Republic of Korea Patent Publication No. 10-2005-0098424 (invention name: lifesaving device; referred to as "quotation of invention 2"), which is the degree to which the human body can be accommodated A plurality of floats having an inner diameter, expanded to have a constant outer diameter to receive buoyancy, and communicated to allow air to pass through each other; A plurality of air pillars that connect the floats to allow air to pass through each other, and expand to a predetermined volume while providing a buoyancy force while maintaining a distance between the floats; Sealing layers between the air pillars and integrally formed with the air pillars; Covers integrally mounted at both ends of the floats to seal both ends of the floats; An upper fastener formed at an end of any one of the covers to tighten and close the cover; Tightening the upper fastener and the cover tightening strap for sealing the upper fastener; A leg insertion unit integrally fixed to the other one of the covers and having a pleat structure which can be extended as the distress enters the leg and extends the leg; Is connected to any one of the floats, is operated when the distress lifts the lowest sphere among the floats to at least the waist height of the distress to blow the compressed air or chemical reaction gas, etc. to connect the floats and these together Expansion means for expanding the air pillars, including,

In the unexpanded state, by simply climbing on the top cover 251 to lift the third accessory 231 to the waist level, the expansion means 281 operates by the lifting operation. Blows the air into the air and the pillars to expand, and as the lifesaving mechanism according to the invention is expanded to expand to a height higher than the height of the distress, and fully expanded, the upper fastener 252 formed on the top cover 251 The upper tightening hole 52 is automatically tightened as the cover tightening strap 253, which is fitted inside and fixed at both ends thereof, is fixed to the third sub-portion 231. On the other hand, the distress person can move by inserting the leg into the leg insertion portion 241 of the corrugated structure extendable from the lower cover 232 integrally fixed to the third sub-portion 231, and also floating in the water You can move your legs to some degree.

A handle 255 may be further mounted on the surface of the third buckle 231 to grip the distress up to the waist height. Therefore, when the distress person lifts the third float 231, the distressed person can easily grasp and lift the unfolded third float 231 by grasping the handle 255 to lift it. It is thereby to easily inflate the life preserver according to the present invention to seek escape from the distress.

Conventional personal life preservers according to the above-mentioned Cited Invention 1 and 2 should be kept in a separate place and taken when necessary and entered into the life preserver to start wearing them. There is a high possibility that the use itself will be impossible since there are many cases where there is no time.

Since there is no time to learn how to use a personal life preserver, there is a high risk of not using it properly.

In addition, such a personal life preserver is not easy to prepare a place to be stored separately, such as a ship, especially in the case of a water worker there is a problem that the distress itself is impossible because there is no place and time to wear in case of emergency or storage.

In addition, when the Civic Invention 1 and 2 fall into the water, there is a possibility that the distress who enters the life-saving device may be overturned in severe cases because there is no way to focus on the water condition where the waves or ripples constantly exist. There is a serious problem that water is filled in one space, and even a minimum swimming is impossible, which increases the possibility of drowning.

In addition, such a personal life preserver has a problem that restricts all activities by confining the human body in a narrow confined space, and may have a feeling of rejection for people with phobia.

In such a closed space, not only is it difficult to smoothly breathe, but even a minimal physiological phenomenon such as excretion is impossible, so long time waiting for rescue is inherently impossible.

In addition, the invention 1 and 2 is that the foot is in contact with the low water temperature water through the tube, so that the cold air is delivered to the lower half of the human body, so there is a possibility that a difficult situation may occur before being rescued from hypothermia.

The purpose of the present invention is to immediately solve the problems, the personal lifesaving device coupled to the fastening means of the human body in the form of a backpack or belt with a simple operation to pull the operating rope in the event of an emergency in the event of an immediate wave It is to provide a personal life-saving device that allows you to float safely even in severe ripples.

The present invention provides an expansion means consisting of a squib which is a detonating device operated by pulling the operating rope, a igniting agent ignited by this, a gas generator for generating a gas by the igniter, and an expansion means. In a known personal lifesaving device, in which a swelling portion into which gas is injected is communicated with a tube,

The personal life saving device characterized in that the swelling portion and the plurality of tubes described above are connected by a stretchable and flexible connecting hose, and the diameter connecting the plurality of tubes and the connecting hose is connected to a supply pipe having a differential diameter according to the expansion order. Suggest.

To this end, the present invention proposes a personal life-saving device that can be divided into second, third, and the like on both sides of the first tube of the back portion, so as to be sequentially expanded. In addition, the present invention forms an observation hole on one side of the second and third tubes that expand upward to form a dome shape, and inserts a filling tube therein and extracts it if necessary, and thus can be used for personal observation. Suggest a device.

In addition, the present invention proposes a personal life-saving device of a more stable form by fastening the end portions of the expanded second and third tubes so that the tube is generally in the form of upper and lower light, so as not to be overturned by waves or ripples.

In this way, the present invention is not a method of finding and wearing a lifesaving device in distress, but a simple operation of pulling the operation rope of the present invention installed in a human body wearing means in the form of a backpack, a belt, a life jacket, a water jacket, etc. Only the personal life preserver can be started immediately,

It is possible to evacuate quickly and safely in an emergency situation in which a shipwreck or a ship is distressed, thus effectively saving valuable lives. In addition, the present invention is to be placed in a state of distress floating in the water lying on the upper surface of the tube so that it can stand in a very stable state without efforts to grasp a separate center in the water conditions in which waves or ripples exist. If necessary, you can loosen the wearing belt, sit up, or do minimal activities. If you pull out the filling tube inserted into the observation hole of the second and third tubes, you can use it as an observation hole, so that a more effective structure can be made possible. In addition, since the overall shape is provided in the most secure triangular shape, it is possible to protect valuable lives by providing a safe evacuation means not to be overturned by waves or ripples.

1 and 2 are explanatory views showing a conventional distress lifesaving device.

3 is an explanatory view showing a conventional lifesaving mechanism.

4 and 5 are explanatory diagrams showing an example of application to a belt showing an application example of a personal life preserver according to the present invention.

6 and 7 are explanatory views showing an example of application to a backpack showing an application example of a personal life preserver according to the present invention.

8 is an explanatory view showing an example of application to a life jacket as showing an application example of a personal life preserver according to the present invention.

Figure 9 is an explanatory diagram showing an example of application to the underwater work clothes showing an application example of a personal life preserver according to the present invention.

10 is an explanatory diagram showing the structure of a personal lifesaving device according to the present invention;

11 is a perspective view showing the appearance of a personal life preserver according to the present invention.

12 to 18 are explanatory views showing the operation of the personal lifesaving device according to the present invention.

19 and 20 are explanatory diagrams showing an embodiment of the present invention according to another embodiment.

21 is an explanatory view showing an evacuation state using a personal lifesaving device according to the present invention.

Fig. 22 is an explanatory view showing a personal lifesaving device according to the present invention having an observation hole and a drain hole;

Figure 23 is an explanatory view showing another embodiment of the first tube according to the present invention.

24 is an explanatory view showing another connection state of each tube according to the present invention;

25 is an explanatory view showing another embodiment of the first tube according to the present invention;

Figure 26 is an explanatory view showing another embodiment according to the present invention in which the fabric is a plurality of layers.

* Explanation of symbols for the main parts of the drawings

10: human body wearing means 11: buckle 12: cover

20: expansion means 21: working rope 22: squib

23: ejection part 30: tube 30 ': the first tube

30 '': 2nd tube 30 '' ': 3rd tube 30' '' ': 4th tube

30 '' '' ': Fifth tube 31: connection hose 32: supply pipe

33: concave portion 34: through hole 35: protrusion

36: projection 37: observer 38: filling tube

39, 39 ': Drain 40: Diaphragm 41: Separation space

42: Velcro tape 43: Check valve

The present invention provides a squib which is an initiator which is operated by pulling an operating rope, an expansion means composed of a ignition agent ignited by the ignition agent, a gas generator generating gas by the ignition agent, and a gas of the expansion means is injected. In the personal lifesaving device, the bulging portion to be in communication with the tube,

The swelling portion and the plurality of tubes described above are connected by a stretchable and flexible connecting hose, the diameters connecting the plurality of tubes and the connection hoses described above are connected to the air supply pipes differentiated according to the expansion order, and the plurality of tubes described above It consists of a first tube that is deployed to the back of the human body, and the second, the third tube that is extended upward from both sides to form a triangular cross-section, it is fixed to one side of the human wearing means.

Referring to the present invention in more detail with reference to the accompanying drawings as follows.

Personal life saving device according to the present invention generates a gas by the squib 22, which is an aerator, which is operated by pulling the operating rope 21, such as an automobile airbag, and the igniter, igniter that is ignited thereby. Expansion means 20 is composed of a gas generating agent and the blowing unit 23 is injected therein, as shown in Figure 10, the gas injected from the above-described blowing unit 23 is supplied to the tube 30 In a personal life preserver designed to be

The above-mentioned blower part 23 and the plurality of tubes 30 are connected to each other by a stretchable and stretchable connecting hose 31, and the diameter of the pipe connecting the plurality of tubes 30 and the connecting hose 31 is differentiated. 32), which is to be fixed to one side of the human wearing means (10).

In addition, the present invention is to prepare a plurality of tubes 30 for the implementation, as shown in Figure 11, the first tube (30 ') that is deployed to the back of the human body, and the first tube that is developed to surround the human body (30) As the embodiment of the second and third tube 30 ", 30 " In operation, the igniter is ignited, thereby generating a huge amount of gas as the gas generating agent explodes. Accordingly, the first tube 30 'having the largest diameter of the air supply pipe 32 is first expanded and the human body is expanded. A mat shape is formed on the rear surface of the tube, and then, an expansion gas is injected into the second and third tubes 30 " and 30 '" In the form of a wrap, and when you get in this state, you can evacuate safely and wait for rescue. It is possible.

Steps for developing in such a state as shown in FIG. 11 are illustrated in FIGS. 12 to 18.

As shown in FIG. 12, when the distress pulls the working rope 21, gas is injected from the expansion means 20, and the connection hose 31 is extended as the tube 30 moves, as shown in FIG. 13. The first tube 30 ′ having the largest diameter of the air supply pipe 32 is developed in a mat shape on the back of the human body, and the state at this time is illustrated in FIG. 14. At this time, since the first tube 30 'is inflated and jumps out, it begins to develop outward of the cover 12 which is closed by adhesive means such as Velcro tape 13, and then the air supply pipe 32 having a smaller diameter is formed. Since the gas that is expanded while jumping out of the air flows in earnest into both sides of the first tube 30, the second and third tubes 30 ″ and 30 ″ ″ begin to expand accordingly. As a result, as shown in Fig. 16, both sides are wrapped.

Accordingly, in the present invention, the first, second and third tubes 30 ', 30 "and 30' '' are all inflated in sequence, and the second and third tubes 30" and 30 '' 'are manufactured. When the gas injection by the expansion means 20 is terminated in the expanded state in the expanded state during expansion, the distress portion is formed in the upper portion of the second, third tube (30 ", 30 '' ') 33 And the projections 35 and the projections 36 to the through hole 34 to be coupled in a solid state, this state is shown in Figure 18, a cross-sectional view of this state is shown in Figure 17.

As can be seen from this, the present invention is initiated by the operation of pulling the operation rope 21 installed in the human wearing means 10 immediately during distress, the distress is simply upwards from Figure 12 to Figure 17, 18 Evacuate only by engaging the projections 35 and the projections 36 into the recesses 33 and the through holes 34 above the second and third tubes 30 ", 30 '" Because it is complete, you will be able to evacuate quickly and safely in an emergency situation in distress.

After obtaining in such a state, the first tube 30 'is oriented downward by the weight of the human body, and the second and third tubes 30 ", 30' " It will be able to protect the victims from the slump, and the weight of the human body will act as a central weight, so that even during severe storms, it is possible to wait for rescue while maintaining a stable posture.

In addition, the human body wearing means 10 may release the tightening by using the buckle 11 of the belt shown in FIG. 4 or the belt shown in FIGS. 6 to 8 to release the restraint of the body to sit up and wait for the structure.

In addition, when the human body wearing means 10 is the water work clothes shown in FIG. 9, the water work clothes may be taken off in the usual way to freely sit and wait for the rescue.

In addition, the present invention can be more easily coupled by applying the Velcro tape 42 on the top of the second, third tube 30 ", 30 '' 'as shown in Fig. 19. In this embodiment, Velcro Since a plurality of hooks 42 'and tape 42' of the tape 42 are provided at corresponding positions so that the loop 42 " may be engaged, the distress person simply cuts off the second and third tubes 30 " and 30 '". Only the operation will be able to tighten the top.

In addition, the present invention, as shown in Figure 20, the first tube (30 ') that is deployed to the back of the human body and the fourth and fifth tubes (30' '' ', 30' '' deployed to the head and foot of the human body) '') And second and third tubes 30 " and 30 '", which are developed on their sides, can be subdivided, whereby the air supply pipe 32 for injecting inflation gas into each tube 30 is provided. The diameter of the first tube 30> the second, the third tube (30 ", 30 '")> the fourth, the fifth tube (30' '' ', 30' '' '') should be made.

In the present invention as described above, the fourth and fifth tubes 30 '' 'and 30' '' '' are separated and installed, and the first tube 30 'and the fourth and fifth tubes 30 at the rear of the distress person. '' '', 30 '' '' ') will be expanded and deployed in stages, so that the distress can be prepared to evacuate to a more comfortable position.

Figure 21 shows the evacuation state using the present invention.

As can be seen from this, in the present invention, immediately after evacuation, the human body wearing means 10 is coupled to the first tube 30 ', and as described above, the human body has the first tube on the mat ( 30 ') securely located.

In this state, when the distress person loosens the buckle 11 of the human body wearing means 10 or takes off the water work clothes in order to grasp the water situation, the minimal activity is possible inside the lifesaving device according to the present invention as well as observing the external situation. can do.

That is, the present invention is to extract the filling tube 38 fitted in the observation hole 37 formed on any one side of the second, third tube (30 ", 30 '") to observe the outside, and another emergency breathing It is possible to supply the air necessary for breathing without a device, and if it is to be closed due to waves, snowfall, rainfall, etc., it is possible to secure a safe evacuation space by inserting the refilling tube 30 again. The excreta generated in the evacuation space or the water penetrated from the outside may be drain holes 39 formed in one side of the drain hole 39 of the first tube or the second and third tubes 30 ″ and 30 ″ of FIG. 21 or 22. 39 '), the filling tube 38, which is blocked, can be taken out, discharged, and plugged again to maintain a safe evacuation space.

In addition, the present invention, as shown in Figure 23, the first tube 30 'which is the most important function for the survival of the distress is composed of two tubes, and the two inlet pipe 32 to be individually injected As shown in FIG. 24, the check valves 43 are provided between the respective tubes 30 and the air supply pipes 32, so that even if one of the tubes is broken and the gas leaks, the gas of the other tubes is checked. By keeping it buoyant to maintain buoyancy, it is possible to maintain a safe evacuation state.

In addition, the present invention, as shown in Figure 25, is provided with a plurality of separation spaces 41 with one or more diaphragms 40 inside the first tube (30 ') that has a decisive impact on safety, and each of the air supply pipe When the 32 and the check valve 43 are installed to inject gas into the separation space 41, the gas in the other tube 30 is released even if any of the separation spaces 41 are damaged and the pressure is lowered. Since it does not move by the check valve 43, it can be used safely.

In addition, according to the present invention, as shown in FIG. 26, the tubes 30 which are critical to safety may be improved by improving the safety of the tubes 30 by one or more layers.

In addition, in the present invention, it is necessary to make the second and third tubes 30 " and 30 " of the fabric color fluorescent, so that they can be easily witnessed from afar, and radio waves are radiated to facilitate navigation by the marine radar. It can also be made by mixing the materials.

In addition, in the present invention, the first, second and third tubes 30 ', 30 " and 30' " can be made transparent so that external observation can be made easier, and the color can be partially transparent. It is.

In addition, the present invention can be used in water work, water leisure and water sports, as well as when working at a height.

In other words, when working on a height while falling or falling from a high ship, the present invention starts only by pulling the operating rope 21, and the expansion means 20 is operated momentarily, so when the impact on the ground or the surface is severe You will be able to protect the victims from the shock.

In addition, the present invention can operate quickly within a short time even if the distress does not recognize the situation and can quickly wrap the body, so as to mitigate the impact by the gas tube 30 and reduce the fall speed to save valuable lives Of course, protection is possible.

In addition, in the present invention, but some of the human wearing means 10 is illustrated, of course, it can be carried out in combination with various types of activities such as swimwear, wetsuits, fishing suits, sailing suits or various life preservers.

In addition, the present invention, as shown in Figure 10 to 14, by pulling the operating rope 21 may be to start the operation of the explosion-proof squib 22, it is changed to the lever type to pull the lever As a result, friction may occur to cause the igniter to ignite. In addition, the power supply is supplied to the ignition filament in accordance with the pressing of the button may be used to change the button type to ignite the ignition.

In addition, the present invention is to secure the personal life saving device consisting of the expansion means 20 and the plurality of tubes 30 to the human body wearing means 10, to protect the internal device cover 12 as shown in FIG. It is preferable to use a fabric), and the cover 12 made of such a fabric will not be irritating to the back of the distressed person who lays down during operation. You can see it in the safest form.

On the other hand, the cover 12 made of such a fabric may be made of soft rubber, plastic, or aluminum because the inner tube 30 may be damaged by a sharp object, and other technical features of the present invention. Of course, it can be modified in various forms while maintaining.

The present invention can be easily applied to the belt as shown in Figure 4 at the time of water activities, such as various water leisure and water sports, as shown in Figure 5, so as to simply wear around the waist,

As shown in FIG. 6, it may be applied in the form of a backpack so as to be carried on the back as shown in FIG. 7.

In addition, the present invention can be used by being fixed to the rear of the life vest, as shown in Figure 8, or fixed to the rear of the water work clothes, as shown in Figure 9.

As such, it can be utilized by fixing the personal life preserver according to the present invention to the human body wearing means 10 of various forms such as belts, backpacks, life jackets, water work clothes. The personal lifesaving device according to the present invention in this form has a squib 22, which is an aeration device operated by pulling the operating rope 21, and a gas generating gas by the ignition agent and the ignition agent ignited thereby. Expansion means 20 composed of a generator is provided in one module.

Claims

An expansion means composed of a squib, an aerator which is operated by pulling an operation rope, an ignition agent ignited by it, a gas generator generating gas by the ignition agent, and an swelling portion through which the gas of the expansion means is injected, communicates with the tube. In the known personal life preserver,

Personal life-saving device, characterized in that the swelling portion and the plurality of tubes connected to each other by a stretchable and stretchable connecting hose, the diameter connecting the plurality of tubes and the connection hose is connected to the differential supply pipe according to the expansion order.
The method according to claim 1,

The above-described plurality of tubes is a personal lifesaving device, characterized in that it comprises a first tube that is deployed to the back of the human body, and the second, third tube that is extended upward from both sides to form a triangular cross-section.
The method according to claim 2,

Personal lifesaving device, characterized in that the diameter of the air supply pipe connected to the first tube is larger than the diameter of the air supply pipe connected to the second, third tube.
The method according to claim 2,

Personal life-saving device, characterized in that the above-mentioned second, third tube is formed in the concave portion and the through-holes and projections in contact with each other to be firmly coupled during fastening.
The method according to claim 2,

Personal life-saving device, characterized in that a plurality of hooks and loops of the Velcro tape are respectively installed in a portion where the above-described second and third tubes contact each other so as to be firmly coupled at the time of fastening.
The method of claim 1,

One or more observation holes on any one side of the second, third tube, personal life-saving device, characterized in that the filling tube can be inserted or removed.
The method of claim 1,

Personal life saving device characterized in that to form one or more drain holes in the lower side of the second, third tube, and to insert or remove the filling tube.
The method of claim 1,

A personal lifesaving device, characterized in that a plurality of separation spaces are provided in at least one diaphragm inside the first tube, and a supply pipe and a check valve are respectively provided in the first tube.