JP2019051902A - Life raft - Google Patents

Abstract

To provide a life raft provided with a draft adjustment function.SOLUTION: A life raft 1 includes: a main body 10 in a box-shaped configuration with an open top surface; a floating body unit 30 arranged inside the main body; and a top plate unit 20 covering the top surface of the main body, and is characterized by having the main body made of wire basket body 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a life preserver, and more particularly, to a life preserver having a draft adjustment function.

In the Great East Japan Earthquake that occurred in 2011, it was recognized that tsunami damage could be more serious than damage caused by earthquakes such as building collapse.
A variety of life rafts and lifeboats have been developed to prevent flooding by the victims boarding and drifting in response to tsunamis and heavy rains.
Patent Documents 1 and 2 disclose a life raft that rides on a flat floating body. The life preserver floats on the water by the buoyancy of the floating body itself.
Patent Documents 3 to 5 disclose lifeboats having a cabin under the surface of the water. In addition to the buoyancy of the member itself, the lifeboat creates a buoyancy structurally by securing a volume below the water surface (drainage volume) at the bottom of the ship.

JP 2002-85197 A JP 2014-210144 A Utility Model Registration No. 3209157 Japanese Patent Laying-Open No. 2015-105090 JP 2013-67360 A

<1> The scissors of Patent Documents 1 and 2 have a structure that rides on a flat floating body, and therefore have a high center of gravity and are unstable and easily overturned. Moreover, since the drainage volume is small and the resistance in water is small, it is easy to be swept away by wind.
<2> Since the lifeboats of Patent Documents 3 to 5 have a structure that generates buoyancy by the space at the bottom of the ship, the buoyancy is substantially proportional to the size of the hull. For this reason, big buoyancy arises and draft becomes shallow and becomes unstable.
<3> In order to deepen the draft of the lifeboat, it is necessary to increase the weight of the hull by placing ballast on the bottom of the ship. For this reason, it is not portable and cannot be used quickly in an emergency.
<4> All life rafts and lifeboats are stored in specific storage locations such as disaster prevention warehouses. For example, when a sudden tsunami strikes outdoors, they can be reached and used within a limited time. Can not do it.

The life-saving cage of the present invention that solves these problems is a main body portion that has a box-like shape made of a metal mesh housing, a floating body portion that is arranged inside the main body portion, and a top plate portion that covers the upper surface of the main body portion. And comprising.
According to this structure, draft can be adjusted arbitrarily.

In the liferaft of the present invention, the floating body portion may include a hexahedron of polystyrene foam.
According to this structure, it is lightweight but highly stable.

In the liferaft of the present invention, the floating body portion may include a plurality of synthetic resin tanks.
According to this structure, it is easy to obtain the floating body portion, and the tank can be diverted for water supply after evacuation.

In the liferaft of the present invention, the floating body portion may be fixed to the lower surface of the top plate portion.
According to this structure, the buoyancy is high and the stability is higher.

The life preserver of the present invention may include a support column having one end pivotally supported on the top plate.
According to this structure, the fall prevention rope can be stretched on the top plate portion.

In the liferaft of the present invention, the housing may be a welded wire mesh.
According to this structure, high durability and shape retention rigidity can be exhibited.

The life preserver of the present invention may include a top plate body in which the top plate is formed by arranging thinned timbers in the width direction.
According to this structure, even if a part of the top plate body is broken, it can be partially replaced.

The life preserver of the present invention may include a reinforcing material whose main body covers the four corners.
According to this structure, damage to the main body can be prevented.

The large lifeboat of the present invention is characterized in that a plurality of lifeboats are connected to each other.
According to this structure, many victims can be rescued at once.

Since the life preserver of the present invention has the above configuration, it has at least one of the following effects.
<1> By adjusting the volume of the floating body, the draft can be adjusted according to the application without changing the size of the hull.
<2> While the center of gravity is lowered by a metal mesh frame, the buoyancy is raised by the buoyancy of the floating body portion, so that high stability can be exhibited while being lightweight.
<3> During normal times, it can be used as an outdoor table or an outdoor bench, and can be diverted to an eaves in an emergency, so it can be used immediately even when outdoors.

Explanatory drawing of the life preserver of this invention. Explanatory drawing of the life preserver of this invention. Explanatory drawing of the draft adjustment function of the life raft of this invention. Explanatory drawing of Example 2. FIG. Explanatory drawing of Example 3. FIG.

  Hereinafter, the liferaft of the present invention will be described in detail with reference to the drawings.

[Lifeboat]
<1> Overall configuration (FIG. 1).
The life preserver 1 of the present invention is a life preserver provided with a draft adjustment function.
The life preserver 1 includes a main body portion 10 made of a metal mesh case, a top plate portion 20 that covers the upper surface of the main body portion, and a floating body portion 30 disposed inside the main body portion 10.
The top plate portion 20 is fixed to the edge portion of the main body portion 10. However, the top plate portion 20 can be removed as needed to take out or exchange the floating body portion 30.
The life preserver 1 can be used as outdoor equipment such as an outdoor table and an outdoor bench during normal times. When a river overflows due to a tsunami or torrential rain, it is converted into a kite and boarded on the top plate 20 to prevent the victim from flooding.

<2> Main body part.
The main body 10 is a member that stores the floating body 30.
The main body 10 includes a box-shaped wire mesh casing 11 having an open upper surface.
In this example, a welded wire mesh assembled in a bowl shape is adopted as the casing 11.
The welded wire mesh is excellent in durability and shape retention rigidity, and also has weight, so that the center of gravity of the liferaft 1 can be lowered to increase stability. The casing 11 is not limited to a welded wire mesh, and may be a plain weave wire mesh or a crimp wire mesh.
Since the housing 11 is made of a wire net, the victim who has been swept away can easily be rescued by holding the finger on the net.
Moreover, in this example, the reinforcing material 12 which coat | covers the four corners of each adjacent side surface of the housing 11 is provided. The reinforcing member 12 prevents the corners of the casing 11 from being damaged by the collision of the drifting object.

<3> Top plate part.
The top plate portion 20 is a member that becomes a deck of the life raft 1.
In this example, a top plate body 21 and an edge member 22 covering the four sides of the upper surface are provided. However, the structure is not limited to this, and a single-plate structure of the top plate main body 21 may be used.
In this example, the top plate main body 21 is formed by arranging a plurality of thinned timbers in the width direction.
By using thinned wood for the top plate main body 21, even if a part of the top plate main body 21 is damaged, it can be partially replaced, so that the repair cost is reduced. It also contributes to the effective use of thinned wood.
In this example, an aluminum angle material is employed as the edge member 22. By covering the edge of the top plate main body 21 with the edge material 22, damage to the edge can be prevented. Note that the edge member 22 is not an essential component.
In this example, a support column 40 is provided on the top plate 20.

<4> Floating body part.
The floating body 30 is a member that introduces buoyancy into the life raft 1.
In this example, a styrofoam hexahedron is adopted as the floating body 30. However, the present invention is not limited to this, and any material and shape can be used as long as the life preserver 1 carrying the victim is floated with an appropriate draft in consideration of specific gravity and volume.
The floating body 30 is preferably fixed inside the housing 11 so as not to swing in the housing 11. The fixing method may be any method such as fastening with a belt or fastening with a rope.
When the floating body 30 is fixed to the lower surface of the top plate main body 21, the buoyancy is higher than when the floating body 30 is fixed to the bottom of the housing 11, so that stability during drifting is improved.

<5> A support portion (FIG. 2).
The support | pillar part 40 is a member for extending | stretching the rope for fall prevention.
In this example, the support column 40 includes a prism-shaped support column body 41 and a loop-shaped anchoring tool 42 provided on the side of the support column main body 41.
However, not limited to this, the column main body 41 may be a cylinder or the like, and the mooring tool 42 may be an upward hook shape or the like. Further, the mooring tool 42 may not be provided.
The support column 40 may be directly connected to the top plate main body 21 or may be connected to the top plate main body 21 via the upper portion of the reinforcing member 12 as shown in FIG.
In this example, two column main bodies 41 are disposed along opposite sides of the top plate portion 20, and one end of each column main body 41 is positioned at two positions diagonally to the top plate portion 20. To support.
By causing the other end of the column main body 41, the column main body 41 can be erected in an upright state on the top plate portion 20.
The column main body 41 may be configured to be able to stand upright by fixing an end opposite to the shaft support side to another element with a pin-shaped fastener 50 and pulling it out in an emergency.
Further, by using the fastener 50 also as a support shaft of the column main body 41, the column main body 41 can be caused to move to either side depending on the application.
After both the column main bodies 41 are erected, the rope is hung on the mooring tool 42, so that it can be gripped and prevented from falling from the top plate portion 20.
In addition, the support column 40 has applications such as directly gripping to prevent falling or stretching a sail.

<6> Draft adjustment function (FIG. 3).
The life preserver 1 of the present invention is characterized by a draft adjustment function capable of arbitrarily setting a draft.
Since the liferaft 1 of the present invention has a structure in which the floating body 30 is disposed in the main body 10 made of a wire mesh body, the buoyancy depends on the volume of the floating body 30, while the hull (the main body 10 and the top plate portion). 20 dimensions).
Please refer to FIG. The life raft 1a and the life raft 1b have the same elements (shape, volume, weight) other than the volume of the floating body 30.
Life raft 1a floating body 30 is large, a large wastewater volumes compared to the life raft 1b, buoyancy is relatively large and draft becomes shallow draft D ^1.
On the other hand, the life raft 1b having a small floating body portion 30 has a smaller drainage volume than the life raft 1a, and therefore has a relatively small buoyancy, and the draft is a draft D ² deeper than the draft D ¹ .
Here, if the other elements are the same, the deeper the draft, the higher the buoyancy with respect to the center of gravity, so that the restoring force increases and it is difficult to stably overturn.
Thus, the life raft 1 of the present invention can arbitrarily set the draft according to the use regardless of the size of the hull by adjusting the volume of the floating body 30 to be stored.

<7> Outdoor equipment.
The life preserver 1 of the present invention can be used as an outdoor facility such as an outdoor table or an outdoor bench during normal times.
When the life preserver 1 of the present invention is used as an outdoor facility, the main body portion 10 becomes a base portion, and the top plate portion 20 becomes a table surface or a seat surface.
A gentle and calm atmosphere can be created by the thinned wood texture of the top plate main body 21.
When the reinforcing material 12 is provided, the four reinforcing materials 12 serve as support legs for the outdoor equipment.
The life support 1 of the present invention is light because the inside is only the foamed floating body 30 and can be put on a wire mesh of the case 11, so that it can be easily transported and used quickly in an emergency.
Moreover, since the state of the internal floating body 30 can be visually observed from the mesh of the housing 11, it is not necessary to open the top plate 20 and take out the floating body 30 at the time of inspection, and the inspection work is easy.

[Example of using a resin tank for the floating part]
In this example, the floating body 30 includes a polyethylene tank 30a (FIG. 4).
The polyethylene tank 30a can be easily obtained, for example, as a 20 L capacity water tank or oil tank. The lid of the tank 30a made of polyethylene is sealed and air is enclosed therein, and this is enclosed in a gap such as a side portion of the polystyrene foam.
Or you may comprise the floating body part 30 only from the some tank 30a. In this case, a predetermined buoyancy is obtained by accommodating the required number of tanks 30 a in the housing 11.
In the case of this example, besides being easy to obtain, the tank can be diverted for water supply after evacuation.
In addition, a predetermined number of empty plastic bottles or hollow balls can be accommodated in the housing 11 and used as the floating body 30.

[Example of connecting multiple life rafts]
A large life raft can be constructed by connecting a plurality of life rafts 1 of the present invention (FIG. 5).
A plurality of life rafts 1 are arranged in the front, rear, left and right directions and connected to each other.
Although the connection means of the life raft 1 is not ask | required, for example, the mesh | network of the housing 11 can be fastened and connected with a rope or a wire. In this case, since a special connection member is not required, it is possible to easily connect even from a drifting ship.
The fall prevention fence can be stretched around by standing the column main body 41 of the column 40 and hanging the rope between the mooring tools 42.
By connecting the life raft 1, it is possible to widen the deck and rescue a large number of victims at once or transport large equipment.

DESCRIPTION OF SYMBOLS 1 Life support 10 Main body part 11 Body 12 Reinforcement material 20 Top plate part 21 Top plate main body 22 Edge material 30 Floating part 30a Tank 40 Prop part 41 Prop part main body 42 Mooring tool 50 Fastener

Claims (9)

A main body having a box-like shape with an open upper surface;
A floating body disposed inside the main body;
A top plate covering the upper surface of the main body,
The main body is made of a metal mesh frame,
A life preserver.   The lifesaving vest according to claim 1, wherein the floating body part includes a hexahedron of polystyrene foam.   The life preserver according to claim 1 or 2, wherein the floating body portion includes a plurality of synthetic resin tanks.   The life preserver according to claim 1 or 2, wherein the floating body portion is fixed to a lower surface of the top plate portion.   The column portion is provided with one end pivotally supported on the top plate portion and causes the other end to fall from the state of falling on the top plate portion to a state standing upright on the top plate portion. The life preserver according to any one of claims 1 to 4, wherein the posture can be changed.   The life support device according to any one of claims 1 to 5, wherein the housing is made of a welded wire mesh.   The life support device according to any one of claims 1 to 6, wherein the top plate includes a top plate main body in which a plurality of thinned timbers are arranged in the width direction.   The lifesaving veterinary according to any one of claims 1 to 7, wherein the main body includes a reinforcing member that covers four corners of each side surface adjacent thereto. A plurality of life preservers according to any one of claims 1 to 8 are connected to each other,
Large life raft.

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