JP4497330B2 - Life-saving boat - Google Patents

Description

  The present invention relates to a life-saving boat, and more particularly, to a life-saving boat that can quickly raise a rescued person (a person drowning in water) so that the rescue time can be greatly shortened. is there.

  FIG. 1 is a plan view of a conventional life-saving ship, and FIG. 2 is a partial sectional view thereof. As shown in FIGS. 1 and 2, the boat 3 has a front arc tube 1 fixed to the front of the hull and a rear tube 2 fixed to the rear, and the rear end portion and the rear tube 2 of the front arc tube 1 are fixed. An intermediate tube 15 is detachably inserted in a space between the distal end of the first tube and the second tube. The intermediate tube 15 is provided with a protrusion 16 made of a semi-solid material harder than the expansion surfaces of the front arc-shaped tube 1 and the rear tube 2 at the front and rear ends, and an air inlet 17 is formed at the intermediate portion. . When air is injected from the air inlet 17, the intermediate tube 15 expands and bites into the rear end portion of the front arc tube 1 and the front end portion of the rear tube 2. The tube 15 is coupled to the rear end portion of the front arcuate tube 1 and the front end portion of the rear tube 2. When trying to rescue the rescued person with such a boat 3, if the air in the intermediate tube 15 is removed, the intermediate tube 15 contracts and is released from the connection between the front arc-shaped tube 1 and the rear tube 2 and is detached. So it will lift the rescuer from that space.

After the rescuer is lifted on the deck of the boat 3, measures such as artificial respiration are taken on the boat 3, while the intermediate tube 15 is put in place again and air is put into the rear of the front arc tube 1 The space between the end and the tip of the rear tube 2 is closed.
Such a conventional technique is not only troublesome to attach and detach the intermediate tube 15 between the rear end portion of the front arc-shaped tube 1 and the front end portion of the rear tube 2, but also requires work to attach and detach the intermediate tube 15. There was a fatal defect that the lifesaving was delayed for a long time. In addition, there is a problem that equipment for injecting air is indispensable in order to refill the intermediate tube 15 with air.

  An inflatable boat that can lift the rescuer into the ship easily and quickly without flooding the ship as a life-saving ship during traveling or during rescue work by the rescuer [Patent Document] 1), and a patrol boat (see Patent Document 2) that is excellent in lateral stability of the boat and can easily carry out the work of lifting a rescue person on the sea onto the boat.

Japanese Patent Laid-Open No. 07-033073 Japanese Patent Laid-Open No. 06-008879

  The present invention is for solving the above-mentioned problems, and it is easy to separate the front arc-shaped tube and the rear tube in a life-saving rescue vessel, and the work is simplified so that the rescuer can be quickly pulled up and quickly. The purpose is to enable lifesaving.

  To achieve the above object, the present invention is a boat in which a front arc tube (1) and a rear tube (2) are separately formed on the upper outer edge of a hull (4). ) Is fixed to both sides of the hull (4), and sliding rails (6) are installed on both sides or one side of the rear of the forward arcuate tube (1) so as to face the length of the hull (4). Thus, the rear tube (2) can slide on the sliding rail (6), and the rear end of the front arc tube (1) and the front end of the rear tube (2) are detachably connected to each other. The first coupling means is equipped.

  The first coupling means includes a first fixing member (20) and a second fixing member (40). The first fixing member (20) includes a rear end portion and a rear portion of the front arcuate tube (1). The tube (2) is fixed to one end of the tube (2), a shaft (21) is formed in the center of the body, a ring (22) is installed at the root of the shaft (21), and a movable ring ( 30) Further, the cap (60) is screwed to the shaft (21) on the outer side, and the movable ring (30) has a plurality of movable lugs (31) projecting radially from the outer peripheral edge. A lever (32) is integrally formed from one end of the outer peripheral edge, is formed so as to be rotatable about the shaft (21) and is not detached from the outside, and a second fixing member ( 40) the rear end of the front arcuate tube (1) and the rear tube (2 The ring fixing projection (41) protrudes from the outer surface of the ring fixing projection (41), and is fixed to the ring fixing projection (41). ) Is installed, and the inner central portion thereof becomes a space portion (42) to accommodate the movable ring (30), and one side is opened, and a ring-shaped fixing ring (50) that is entirely C-shaped is provided. As a result, the first fixing member (20) and the second fixing member (40) are arranged such that the movable ring (30) is positioned inside the fixing ring (50) and the lever (32) rotates. It is a ring meshing mechanism coupling device (hereinafter, simply referred to as “coupling device”) (100) that is overlapped and firmly coupled with the movable lug (31) in close contact with the fixed lug (51). Is preferred.

  In the coupling device (100), an annular recess (43) is formed on the outer side of the ring fixing protrusion (41) of the second fixing member (40), and on the outer surface of the first fixing member (20). An annular protrusion (23) having one end opened so that the lever (32) can rotate even when tightly coupled to the annular recess (43) is formed, and the annular protrusion (23) becomes an annular recess (43 It is preferable that the first fixing member (20) and the second fixing member (40) are in close contact with each other by being inserted into each other.

  In addition, an inclined surface (33, 53) is formed on one side inner surface of the movable lug (31) and the one side inner surface of the fixed lug (51) that contacts the movable lug (31), so that the mutual contact becomes smooth. It is preferable.

  Since the life-saving vessel of the present invention can prepare for raising the rescuer at sea with a simple operation, the time required for life-saving can be greatly shortened. The upper entrance can be completely closed and subsequent operations can be carried out safely, ensuring excellent reliability.

Hereinafter, a lifesaving ship according to the present invention will be described with reference to FIGS.
As shown in FIGS. 3 to 7, the life-saving ship according to the present invention is formed on the upper outer edge of the hull 4 of the ship 3 by separating the front arc tube 1 and the rear tube 2 into the front arc tube. 1 is fixed to both sides of the hull 4, and a sliding rail 6 is installed on both sides at the rear of the front arc-shaped tube 1 or on the upper surface of the hull 4 on one side, facing backward in the length direction of the hull 4.

  The rear tube 2 is provided with a guide projection 9 to be inserted into the sliding rail 6 at a lower portion thereof so that the rear tube 2 can slide on the sliding rail 6. The rear end portion of the front arc-shaped tube 1 and the front end portion of the rear tube 2 are equipped with first coupling means that are detachably connected to each other.

  At the position where the rear tube 2 is installed on the hull 4, a tube support frame 10 is formed so as to protrude from the rear end portion of the front arc-shaped tube 1 at a predetermined interval, whereby the inner surface of the rear tube 2 is formed. Support. A space between the front arc-shaped tube 1 and the tube support frame 10 is a rescue target pull-up port 11 for lifting the rescue target. Further, a second coupling means is provided for detachably coupling the rear tube 2 to the tube support frame 10.

  FIG. 8 is a longitudinal sectional view of a boat 3 according to another embodiment of the present invention. An inner sliding rail 6a is installed in the length direction on the tube support frame 10, and an inner guide protrusion 9a is installed on the inner side surface of the rear tube 2 and is inserted into the inner sliding rail 6a. The guide protrusion 9 and the inner guide protrusion 9a are connected by a connecting piece 13 made of a hard material, and the connecting piece 13 is preferably bonded and fixed to the surface of the rear tube 2.

  7 and 8, both the sliding rail 6 and the inner sliding rail 6a are formed so that a rail groove 7 having an “inner groove” shape with a narrow inlet and a wide inner side is formed. Is slid along the corresponding rail groove 7 by the guide protrusion 9 and the inner guide protrusion 9a, the rear tube 2 is prevented from being detached from the sliding rail 6 or the inner sliding rail 6a.

  As shown in FIGS. 6 to 8, hooks 8a are installed on the tube support frame 10 and the rear tube 2, and ropes 8 are installed on the hooks 8a, so that the rear tube 2 has a certain length. It will prevent it from leaving and falling offboard. Each of the first coupling means and the second coupling means has a detachable tape (such as Velcro (trade name) 12), or a latch that is detachably attached to the hook after the hook is installed. It can also be carried out with screws or clamps.

  It is desired that the connection and separation of the front arc tube 1 and the rear tube 2 can be performed quickly, accurately and safely, and the most preferable applicable coupling means is the front arc tube as shown in FIG. There is a coupling device 100 composed of a ring meshing mechanism that can be separated or coupled by a simple rotating operation of a handle or a lever between the rear end portion of 1 and the distal end portion of the rear tube 2.

  10 to 17 are diagrams illustrating the coupling device 100. FIG. The coupling device 100 is roughly divided into a first fixed member 20 and a movable ring 30, and a second fixed member 40 and a fixed ring 50, and the tube used for the boat 3 generally has a substantially circular cross section, and therefore corresponds to this. As described above, the first fixing member 20 and the second fixing member 40 are also shown in a substantially circular shape, but it is needless to say that the shape is not limited to the substantially circular shape and can be arbitrarily selected.

  The first fixing member 20 is fixed to one of the rear end portion of the front arc-shaped tube 1 and the front end portion of the rear tube 2, and the second fixing member 40 is fixed to the other so as to face each other. A description will be given assuming that the first fixing member 20 is fixed to the shaped tube 1 and the second fixing member 40 is fixed to the rear tube 2.

  The first fixing member 20 and the second fixing member 40 are made of metal or synthetic resin, and are bonded and fixed to the front arc-shaped tube 1 and the rear tube 2 with an adhesive. The first fixing member 20 has a circular body and is bonded to the rear end portion of the front arc-shaped tube 1. A shaft 21 protrudes from the center of the body and a ring 22 is installed at the root of the shaft 21. The movable ring 30 is outside and the cap 60 is screwed to the shaft 21 on the outside.

  The ring 22 has a function of protecting the first fixed member 20 from friction caused by the rotation of the movable ring 30, and the ring 22 has a height corresponding to the thickness of the fixed ring 50 at the root portion of the shaft 21 if necessary. It can also be formed integrally with the shaft 21 in the form of a step jaw.

  The movable ring 30 is a component corresponding to the fixed ring 50, and is prevented from detaching outward when the cap 60 is fastened to the shaft 21 with a screw (not shown). A plurality of movable lugs 31 project radially from the outer peripheral edge of the movable ring 30, and a lever 32 for rotating the movable ring 30 is integrally formed. The stationary ring 50 in the second stationary member 40 is integrally formed. Are assembled from the outer side of the shaft 21 so as to be sandwiched between the fixing rings 50 and rotatable.

  The second fixing member 40 is adhesively fixed to the distal end portion of the rear tube 2 and has a configuration corresponding to the first fixing member 20. The second fixing member 40 is a circular type, and a ring fixing protrusion 41 protrudes on the outer surface thereof, and the inner side thereof. The central part is the space part 42. The fixing ring 50 is assembled by being fixed to the ring fixing protrusion 41 with screws. Accordingly, when the first fixing member 20 and the second fixing member 40 are coupled, the shaft 21 (including the cap) and the movable ring 30 of the first fixing member 20 are accommodated in the space portion 42. .

  Further, one side of the fixed ring 50 is opened at an angle necessary for the rotation operation of the lever 32 in the movable ring 30 and has a C-shaped ring shape as a whole. Along the inner peripheral surface of the fixed ring 50, the fixed lugs 51 having a shape and the number corresponding to the movable lugs 31 are radially formed.

  Therefore, when the first fixing member 20 and the second fixing member 40 are coupled, the movable lug 31 of the movable ring 30 enters from between the fixed lugs 51 of the fixed ring 50 and is located inside the fixed ring 50, Next, by rotating the lever 32, the movable lug 31 and the fixed lug 51 are overlapped with each other in close contact with each other, and the first fixing member 20 and the second fixing member 40 are firmly coupled.

  As another characteristic element, the coupling device 100 has an annular recess 43 formed on the outer side of the ring fixing protrusion 41 of the second fixing member 40, and at the same time, an annular protrusion on the outer surface of the first fixing member 20. 23 is formed, whereby the annular protrusion 23 is inserted into the annular recess 43, and the first fixing member 20 and the second fixing member 40 are in close contact with each other.

  That is, when the first fixing member 20 and the second fixing member 40 are coupled, the annular protrusion 23 and the annular recess 43 serve to guide each other in the process of male-female coupling, The second fixing member 40 is tightly and stably coupled straight. In order to achieve such a configuration, the movable ring 30 is installed in a state of being retracted inside the shaft 21, so that an operating space for the lever 32 is required, and one side of the annular projection 23 is opened at a certain angle. The opening 24 needs to be formed.

Further, the operation space of the lever 32 is also necessary for the second fixing member 40, and for this reason, the fixing ring 50 opens on one side corresponding to the opening 24 of the first fixing member 20, and the fixing lug 51 The movable ring 30 enters the inside, and is formed so as to protrude to a thickness that can secure a space sufficient for the lever 32 to operate.
Further, in order to secure a stable operating space for the lever 32, the ring fixing projection 41 of the second fixing member 40 and the outer peripheral edge 44 of the outer end thereof are provided with a concave groove 45 for operating the lever 32 in the first manner. It is formed at a position and an angle corresponding to the opening 24 of the fixing member 20 and the opening of the fixing ring 50.

  By such a male-female close contact structure of the ring-shaped protrusion 23 and the ring-shaped recess 43, the front arc-shaped tube 1 and the rear tube 2 are linearly coupled without being bent to each other during the separation operation or the coupling operation, and are firmly Therefore, the risk of separation due to external impact is reduced, and secondary accidents during the operation of the vessel 3 can be prevented.

On the other hand, as another characteristic element of the coupling device 100, the one side inner surface of the movable lug 31 and the one side inner surface of the fixed lug 51 correspondingly contacting with each other are formed by inclined surfaces 33 and 53, respectively. Is made smooth, and the rotation operation of the lever 32 can be facilitated.
The separation operation and the coupling operation of the front arc-shaped tube 1 and the rear tube 2 by the lever 32 need to be performed quickly, reliably and reliably as long as it is based on the assumption of lifesaving for a time. 31 and the fixed lug 51 are provided with inclined surfaces 33 and 53 of an appropriate angle so that the end portions of the movable lug 31 and the fixed lug 51 easily overlap each other when the lever 32 is rotated, and the lever 32 is further rotated. Thus, the movable ring 30 and the fixed ring 50 can be quickly meshed and coupled.

The operation mechanism of the present invention configured as described above will be described in detail with reference to the drawings.
The rear end portion of the forward arc-shaped tube 1 and the distal end portion of the rear tube 2 of the boat 3 according to the present invention and the inner side surfaces of the tube support frame 10 and the rear tube 2 are first coupled in a normal state other than the rescue operation. Corresponding portions are closely bonded to each other by the means and the second coupling means, that is, the removable tape 12 and the coupling device 100. In the coupling device 100, as shown in FIG. 15, the movable lug 31 and the fixed lug 51 overlap each other, and the first fixed member 20 and the second fixed member 40 are integrally bonded.

  When the boat 3 is operated in such a state and the rescuer is to be rescued, the removable tape 12 in which the rear end portion of the front arc tube 1 and the front end portion of the rear tube 2 are tightly coupled. And the coupling of the coupling device 100 is released, the removable tape 12 that tightly couples the tube support frame 10 and the inner surface of the rear tube 2 is separated, and the rear tube 2 is slid rearward.

  In the case of the coupling device 100, as shown in FIGS. 15 to 17, the lever 32 is manually rotated in the unlocking direction. That is, when the lever 32 is rotated, the movable ring 30 rotates around the shaft 21 and reaches the state of FIG. 17 through the stage of FIG. When the state shown in FIG. 17 is reached, the movable lug 31 and the fixed lug 51 are unlocked so that they do not overlap each other, the first fixing member 20 and the second fixing member 40 are separated, and the rear tube 2 is separated from the front arc-shaped tube 1. It can be separated and slid backward.

  As described above, when the detachable tape 12 as the first coupling means and the second coupling means is separated, or when the lever 32 of the coupling device 100 is rotated in the unlocking direction and separated, the rear tube 2 is moved backward. You can slide. As shown in FIGS. 7 and 8, a guide protrusion 9 is provided on the lower side of the rear tube 2, and the guide protrusion 9 is inserted into the sliding rail 6 on the hull 4, and the inner surface of the rear tube 2. Since the inner guide protrusion 9a installed on the inner side is inserted into the inner sliding rail 6a installed on the tube support frame 10, the rear tube 2 can be slid rearwardly guided by the sliding rail 6 and the inner sliding rail 6a.

  When the rear tube 2 is slid rearward, as shown in FIGS. 5 and 6, hooks 8a are installed on the tube support frame 10 and the rear tube 2, respectively, and the rear tube 2 is placed on each hook 8a. Is connected to the rope 8 to prevent it from being separated beyond a certain length, so that the rear tube 2 can only slide up to the length of the rope 8 even if pushed backward, and the rear tube 2 is removed from the hull 4. It will not drop out.

  The process of the coupling operation of the coupling device 100 will be further described. The rear tube 2 is slid forward to come into contact with the rear end portion of the front arc-shaped tube 1, and the movable ring 30 of the first fixed member 20 is moved to the second fixed member 40. When the lever 32 is housed in the space 42 that is inside the fixing protrusion 41 and then the lever 32 is rotated in the locking direction, the unlocked state shown in FIG. 17 is changed to the locked state shown in FIG. And the second fixing member 40 are coupled.

  At this time, the annular recess 43 and the annular projection 23 are guided so as to be positioned in a straight line with each other, and are closely coupled by male-female coupling. When the inclined surfaces 33 and 53 are formed on the inner side surfaces of the movable lug 31 and the fixed lug 51, the movable lug 31 and the fixed lug 51 can be easily engaged with each other, the lever 32 can be operated easily, and the first fixed member. 20 and the second fixing member 40 can be smoothly connected. Further, by connecting the guide protrusion 9 and the inner guide protrusion 9a with a connecting piece 13 made of a hard material, the rear tube 2 inflated by air pressure is in direct contact with the outer surface of the tube support frame 10 serving as a wall. Thus, a gap is created, so that the rear tube 2 does not generate contact resistance when sliding in the front-rear direction, and the rear tube 2 can be smoothly slid.

  When the rear tube 2 is pushed backward and slid, the rear end of the front arc-shaped tube 1 and the front end of the rear tube 2 are separated by a certain distance as shown in FIGS. An upper opening 11 is formed. The boat 3 also has a tube support frame 10 that supports the inner surface of the rear tube 2, but the tube support frame 10 has a sufficient distance from the rear end portion of the front arc-shaped tube 1, that is, a rescue target pull-up port. 11 is separated by a distance that does not hinder the formation of 11. Therefore, when the slide of the rear tube 2 is large, a portion between the rear end portion of the front arc-shaped tube 1 and the front end portion of the tube support frame 10 becomes the rescueee pulling port 11.

  The lifesaving board 14 carrying the rescuer can be quickly and easily pulled up on the deck 5 of the ship 3 through the rescuer pull-up port 11, artificial respiration or the like immediately after being lifted on the deck. You will be able to save human life by taking measures.

  While the ship 3 is proceeding with the lifesaving operation, the rear tube 2 that has moved rearward is slid forward again and brought into close contact with the rear end portion of the front arc-shaped tube 1, and each detachable tape 12 is attached to a predetermined tape. It is connected to the corresponding part, or the lever 32 of the connecting device 100 is rotated in the locking direction to connect the front arc tube 1 and the rear tube 2 so that the boat 3 can be operated. Can be moved to.

  In the present invention, the rear tube 2 can be installed only on one side of the hull 4 or on both sides of the hull 4. The present invention is not limited to the above-described embodiments, Various modifications can be made without departing from the scope. For example, the shape of the fixing members 20 and 40 and the movable ring 30 and the fixed ring 50 of the coupling device 100 applied to the present invention can be appropriately changed according to the shape of the tube, and the cap 60 for fixing the movable ring 30. Can also take the form of a ring sandwiched between the outer peripheries of the shaft.

  The life-saving boat of the present invention shortens the time to rescue a person drowned in water, greatly increasing the probability that the life-saving will be saved. It is great to contribute to this.

It is a top view of the conventional lifesaving ship. It is a fragmentary sectional view which shows the waist | hip | lumbar part of the conventional lifesaving ship. 1 is a perspective view showing an embodiment of a life-saving boat according to the present invention. FIG. 4 is a side view in FIG. 3. It is a top view in FIG. It is the figure which expanded the "A" part of FIG. 4 partially. It is the BB sectional view taken on the line of FIG. It is a longitudinal cross-sectional view which shows another embodiment of this invention. It is a side view in the state where coupling device 100 was installed in ship 3 by the present invention. It is a perspective view of the coupling device 100 applied to the boat 3 by this invention. FIG. 11 is an exploded perspective view of the coupling device 100 according to FIG. 10. 3 is a cross-sectional view showing a first fixing member 20 of the coupling device 100. FIG. It is a front view in FIG. 4 is a cross-sectional view showing a second fixing member 40 of the coupling device 100. FIG. In coupling device 100, it is an operation state figure in the locked state where movable lug 31 and fixed lug 51 overlapped mutually. In coupling device 100, it is an operation state figure in which movable lug 31 and fixed lug 51 overlap and are in a locked state. In coupling device 100, it is an operation state figure in the unlocked state where movable lug 31 and fixed lug 51 do not overlap mutually.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Forward arcuate tube 2; Back tube 3; Ship 4; Hull 5; Deck 6; Sliding rail 6a; Inner sliding rail 7; Rail groove 8; Rope 9; Guide protrusion 9a; Inner guide protrusion 10; 11; Rescue person pull-up port 12; Removable tape 13; Connection piece 14; Life board 15; Intermediate tube 16; Protrusion 17; Air inlet 20; First fixing member 21; Shaft 22; Ring 23; Part 24; opening 30; movable ring 31; movable lug 32; lever 33; inclined surface 40 (in movable lug 31); second fixing member 41; ring fixing projection 42; space 43; ring-shaped recess 44; Peripheral portion 45; concave groove 50; fixing ring 51; fixing lug 53; inclined surface 60 (in fixing lug 51) -Up 100; (of the ring meshing mechanism) coupling device

Claims (12)

In a boat in which a front arcuate tube (1) and a rear tube (2) are formed separately on the upper outer edge of the hull (4),
The forward arcuate tube (1) is fixed on both sides of the hull (4);
A sliding rail (6) is installed on the upper surface of the hull (4) on both sides or one side of the rear side of the front arcuate tube (1) toward the rear in the length direction of the hull (4),
The rear tube (2) is provided with a guide protrusion (9) inserted into the sliding rail (6) at a lower portion thereof, so that it can slide on the sliding rail (6).
A lifesaving ship characterized in that the rear end portion of the front arcuate tube (1) and the front end portion of the rear tube (2) are equipped with first coupling means detachably connected to each other. Boat. The first coupling means includes a first fixing member (20) and a second fixing member (40).
The first fixing member (20) is fixed to one of a rear end portion of the front arcuate tube (1) and a front end portion of the rear tube (2), and a shaft (21) projects from the center of the body. Formed, a ring (22) is installed at the root of the shaft (21), a movable ring (30) on the outside, and a cap (60) on the outside is screwed to the shaft (21). The movable ring (30) has a configuration in which a plurality of movable lugs (31) are radially formed on an outer peripheral edge, and a lever (32) is integrally formed from one end of the outer peripheral edge, It is assembled so that it can rotate around the shaft (21) and is not detached from the outside.
The second fixing member (40) is fixed to the other of the rear end portion of the front arcuate tube (1) and the front end portion of the rear tube (2) so as to face the first fixing member (20), A ring fixing protrusion (41) protrudes from the outer surface of the ring, and a fixing lug (51) is installed on the ring fixing protrusion (41). The ring (30) is accommodated, and one side is opened to form a ring-shaped fixing ring (50) that is entirely C-shaped,
In the first fixing member (20) and the second fixing member (40), the movable ring (30) is positioned inside the fixed ring (50), and the movable lug is rotated by the lever (32). The lifesaving device according to claim 1, characterized in that (31) is a ring meshing mechanism coupling device (100) which is overlapped and tightly coupled in close contact with the fixed lug (51). Chartered boat.   A tube support frame that supports the inner surface of the rear tube (2) behind the front arc tube (1) of the hull (4) at a distance from the rear end of the front arc tube (1). (10) is formed so as to protrude, and the rescuer pulls up the rescuer between the rear end of the front arcuate tube (1) and the distal end of the tube support frame (10). 3. A life-saving vessel according to claim 1 or 2, characterized in that a mouth (11) is formed.   In the ring meshing mechanism coupling device (100), an annular recess (43) is formed outside the ring fixing protrusion (41) of the second fixing member (40), and the first fixing member ( 20) is formed with an annular protrusion (23) whose one end is opened so that the lever (32) can rotate even when tightly coupled to the annular recess (43). The first fixing member (20) and the second fixing member (40) are brought into close contact with each other by inserting a protrusion (23) into the annular recess (43). The life-saving boat described in 2.   In the ring meshing mechanism coupling device (100), inclined surfaces (33, 53) are respectively formed on one side inner surface of the movable lug (31) and one side inner surface of the fixed lug (51) correspondingly contacting with the movable lug (31). The lifesaving vessel according to claim 2, wherein the mutual contact is made smooth.   In the ring meshing mechanism coupling device (100), the outer peripheral edge (44) of the second fixing member 40 and the ring fixing protrusion (41) are provided with an opening of the ring-shaped protrusion (23) and the ring fixing protrusion (41). The life-saving tool according to claim 2, wherein a concave groove (45) is formed at an angle corresponding to the opening of the fixing ring (40) to secure an operation space for the lever (32). Ship.   The life-saving vessel according to claim 3, wherein the tube support frame (10) and the rear tube (2) are provided with second coupling means that are detachably coupled to each other.   The tube support frame (10) is provided with an inner sliding rail (6a) in the lengthwise direction, and an inner guide protrusion inserted into the inner sliding rail (6a) on the inner surface of the rear tube (2). The life-saving vessel according to claim 3, wherein (9a) is installed.   The life-saving boat according to claim 8, wherein the sliding rail (6) and the inner sliding rail (6a) are formed with a rail groove (7) having a narrow entrance and a wide inner side.   The guide protrusion (9) and the inner guide protrusion (9a) are connected by a connecting piece (13), and the connecting piece (13) is bonded to the surface of the rear tube (2). The life-saving boat according to claim 8.   The said back tube (2) and the said tube support frame (10) are connected with the rope (8), The said back tube (2) prevents falling off from a ship body (4), Item 4. A life-saving ship according to item 3.   The lifesaving ship according to claim 1 or 7, wherein the first coupling means and the second coupling means are detachable tapes (12).

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