Boarding aids

Abstract

To provide a boarding assistance device that can be equipped on a small vessel, reduces the mental burden on a passenger, and enables the passenger to safely board the small vessel from a floating structure. [Solution] The boarding assistance device 2 is used when a passenger P boards onto the deck 102 of a small vessel 100 from a fixed or floating water structure 200, a large vessel, etc., and is equipped with a cushioning mat 10 that is placed on the bow deck 102 of the small vessel 100 and inflates by filling it with air, and an air filling and exhaust device 4 for carrying out a filling process of filling air into the cushioning mat 10 to inflate it before the passenger P boards, and an exhaust process of exhausting air from inside the cushioning mat 10 after the passenger P boards the cushioning mat 10 so that the passenger P can move on it.

Description

[Technical Field]

[0001] The present invention is directed to a method for preventing passengers from Ship? This invention relates to a boarding aid that assists people to board onto the deck of a small vessel. [Background technology]

[0002] In recent years, various floating or bottom-fixed structures, including offshore wind power generation facilities, have been constructed, but to travel between the structures and land, people must transfer from a ship to the structures and from the structures to the ship. To accommodate such transfers, which are affected by waves, ships equipped with gangways that can be extended and retracted and moved back and forth have been proposed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special table number 2020-536783 Summary of the Invention [Problem to be solved by the invention]

[0004] However, to equip a gangway facility as described in Patent Document 1, a medium-sized or large vessel is required, and the use of a small vessel is suitable for enabling people to travel between the floating structure and land efficiently at low cost. However, when using a small vessel, it is not possible to equip it with access support facilities such as a gangway facility, and people must transfer between the floating structure and the vessel on their own. In particular, when boarding a small vessel from a floating structure, people must judge the movement of the vessel rocked by the waves only by sight and time their boarding accordingly. This makes people afraid and makes it more difficult to board. Not only boarding and disembarking between the floating structure and small vessels, but also boarding a large vessel is difficult. shipping The same applies to boarding and disembarking between large vessels and small vessels. shippingIt is necessary to transfer passengers and passengers between the aircraft and small vessels.

[0005] To provide a boarding assistance device that can be equipped on a small vessel, reduces the mental burden on passengers, and enables them to safely board the small vessel from a floating structure or a large vessel. [Means for solving the problem]

[0006] One aspect of the present invention is a method for producing a medicament for the treatment of a pulmonary arthritis. Passengers on fixed or floating water structures or large vessels Ship? A boarding aid used when boarding onto the deck of a small vessel from a a cushioning mat that is placed on the deck at the bow or stern of the small vessel and inflates by filling the interior with air; a filling step of filling the cushioning mat with air to inflate it before the passengers board; an exhaust step of exhausting air from inside the shock-absorbing mat after the passenger has boarded the shock-absorbing mat so that the passenger can move on the shock-absorbing mat; an air filling and exhausting device for carrying out the above; The boarding assistance device is characterized by comprising: [Effects of the Invention]

[0007] This invention can be equipped on small vessels, reducing the mental burden on passengers and allowing them to safely board water structures and large vessels. Ship? It is possible to provide a boarding assistance device that allows a person to board a small vessel from a distance. [Brief explanation of the drawings]

[0008] [Figure 1A] 1 is a diagram showing the configuration of a boarding assistance device according to a first embodiment of the present invention, and is a perspective view that particularly shows a shock-absorbing mat in an inflated state. [Figure 1B] 1B is a perspective view schematically illustrating a state in which the cushioning mat illustrated in FIG. 1A is contracted. FIG. [Figure 2A]1 is a side view showing a schematic view of a boat equipped with a boarding assistance device according to a first embodiment of the present invention, the boat being stopped with its bow close to a floating structure. FIG. [Figure 2B] 2B is a side view showing a state immediately before a passenger boards the vessel from the floating structure after the state shown in FIG. 2A and the cushioning mat of the boarding assistance device is inflated. FIG. [Figure 2C] 2C is a side view showing a passenger getting on the shock absorbing mat after the state shown in FIG. 2B. FIG. [Figure 2D] 2D is a side view showing a state in which, after the state shown in FIG. 2C, the inflated cushioning mat is deflated and a person walks on the cushioning mat and moves onto the deck. FIG. [Figure 3A] FIG. 10 is a diagram showing the configuration of an air filling and exhausting device of a boarding assistance device according to a second embodiment of the present invention, and is a diagram showing in particular the inflation of a shock absorbing mat. [Figure 3B] 3B is a diagram schematically illustrating the process of shrinking the cushioning mat shown in FIG. 3A. FIG. [Figure 4] FIG. 10 is a perspective view schematically showing a framework structure of a boarding assistance device according to a third embodiment of the present invention. [Figure 5] FIG. 10 is a side view schematically showing a state immediately before a passenger boards a vessel from a floating structure using a boarding assistance device according to a third embodiment of the present invention. [Figure 6] FIG. 10 is a perspective view schematically showing a swing arm provided on a framework structure of a boarding assistance device according to a fourth embodiment of the present invention. [Figure 7A] FIG. 10 is a side view schematically showing a state immediately before a passenger boards a vessel from a floating structure using a boarding assistance device according to a fourth embodiment of the present invention. [Figure 7B] 7B is a side view showing a state in which the passenger has moved onto the cushion mat after the state shown in FIG. 7A. FIG. [Figure 8] FIG. 10 is a perspective view schematically showing a rail member provided in a framework structure of a boarding assistance device according to a fifth embodiment of the present invention. [Figure 9A]9 is a side view taken along the arrow AA in FIG. 8, and is a diagram schematically illustrating a state in which the rod-shaped member is in a starting position. [Figure 9B] 9B is a diagram schematically illustrating the state in which the rod-shaped member moves over the stopper mechanism at the start position and slides toward the end position from the state in FIG. 9A. FIG. [Figure 10A] FIG. 10 is a side view schematically showing a state immediately before a passenger boards a vessel from a floating structure using a boarding assistance device according to a fifth embodiment of the present invention. [Figure 10B] 10B is a side view showing a state in which the passenger has moved above the shock absorbing mat after the state shown in FIG. 10A. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] (Water structures and large ships Ship? (challenges when transferring from a ship to a small vessel) There are two types of floating structures: fixed structures, where the legs of the structure are attached to the bottom of the water, and floating structures, where the structure is separated from the bottom of the water. Regardless of the type of floating structure, people need to travel between land and the floating structure by boat. In such cases, small boats are suitable for efficient and low-cost transportation of people between the floating structure and land. However, small boats cannot be equipped with access support equipment such as gangways, so people must transfer between the floating structure and the boat on their own. In particular, small boats tend to sway significantly up and down and side to side due to the influence of waves, making it more difficult to transfer between the floating structure and the small boat. In addition to boarding and disembarking between the floating structure and the small boat, it is also difficult to use large boats, which tend to sway relatively little. Ships and Similar issues arise when boarding and disembarking small vessels that are subject to large pitching motions.

[0010] From small vessels to floating structures and large ships On the ship When transferring, do not use floating structures or large ships. The ship Since there is no rocking or the rocking is very small, you can feel the rocking movement of the small vessel you are on and time it accordingly, and it is relatively easy to move over water structures or large vessels. On the shipFor example, from the movement of the small boat felt by the soles of the feet, when the small boat moves upward, it can be seen that it is moving towards a floating structure or a large ship. On the ship Basically, it can be used on floating structures and large ships. Ship The floor height of the destination is the same as or higher than the deck of a small boat, so the line of sight of the person transferring is horizontal or upward, and since the destination remains almost stationary, they can transfer without feeling too much fear.

[0011] On the other hand, when boarding a small boat from a floating structure or a large vessel, one must judge the movement of the small boat mainly by sight and descend to the deck of the small boat located below, which increases fear. Fear makes it difficult to move smoothly and increases the risk of falling into the water. When actually descending to the deck of the small boat, there is a risk of injuring one's feet from the impact of hitting the deck, or of falling and injuring other parts of one's body.

[0012] The following describes, with reference to the drawings, an embodiment of the boarding assist device of the present invention for solving the above-mentioned problems. The embodiment described below is intended to embody the technical concept of the present invention, and unless otherwise specified, the present invention is not limited to the following.

[0013] In each drawing, components having the same function may be designated by the same reference numeral. For convenience, the embodiments may be shown separately to facilitate explanation or understanding of the main points. However, partial substitution or combination of configurations shown in different embodiments is possible. In the embodiments described below, descriptions of matters common to the above-mentioned embodiments will be omitted, and only differences will be described. In particular, similar effects due to similar configurations will not be mentioned in each embodiment. The size and positional relationship of components shown in each drawing may be exaggerated for clarity. In the following description and drawings, the vertical direction is described as the up-down direction. The bow side of a ship may also be referred to as the front side, and the stern side as the rear side. Air flow and the movement of people and objects may also be indicated schematically with arrows.

[0014] (Boarding assistance device according to a first embodiment of the present invention) First, a boarding assistance device according to a first embodiment of the present invention will be described with reference to Figures 1A and 1B. Figure 1A is a diagram showing the configuration of the boarding assistance device according to the first embodiment of the present invention, and is a perspective view showing, in particular, a shock-absorbing mat in an inflated state. Figure 1B is a perspective view showing, in a deflated state, the shock-absorbing mat shown in Figure 1A.

[0015] The boarding assist device 2 according to this embodiment includes a cushioning mat 10 that is inflated by filling the interior with air. The cushioning mat 10 includes a hollow expandable portion 10A equivalent to an airbag or balloon, and a solid upper surface portion 10B disposed above the expandable portion 10A, with the entire expandable portion 10A and upper surface portion 10B covered with a cover 10C.

[0016] The expandable section 10A is made of a resin outer shell member that is both flexible and strong, and is fitted with an intake and exhaust port 12. The expandable section 10A expands when air is filled into the expandable section 10A through the intake and exhaust port 12, and contracts when the air inside the expandable section 10A is discharged through the intake and exhaust port 12. By filling the expandable section 10A with air at a predetermined pressure, as will be described later, a person can operate the expandable section 10A on a floating structure or a large ship. Ship? The expansion and contraction section 10A can effectively absorb the shock when a person steps onto the deck of a small vessel from a water structure or a large vessel. Ship? It has the ability to absorb the impact when a person steps onto the deck of a small vessel from a platform, and is durable enough to maintain this ability for a long period of time.

[0017] In the illustrated example, the expandable section 10A has a structure in which a substantially rectangular parallelepiped (rectangular in plan view) outer shell section to which the intake and exhaust ports 12 are attached is integrally connected with a plurality of columnar outer shell sections arranged above it, allowing for efficient expansion and contraction. However, this is just one example, and any other hollow configuration can be adopted.

[0018] The upper surface portion 10B, located above the telescopic portion 10A, is a solid, plate-like member made of a highly elastic and strong resin material. It functions to absorb the impact when a person steps onto the deck and to protect the hollow telescopic portion 10A below from impact. The cover 10C that covers the telescopic portion 10A and the upper surface portion 10B can also be made of a sufficiently strong resin sheet.

[0019] An air source 20, which is an air compressor, is connected to a pipe 22 attached to the intake and exhaust port 12 of the extension section 10A. This allows pressurized air to be supplied from the air source 20 to the extension section 10A. However, the air source 20 is not limited to an air compressor, and any other air supply source can be used as long as it can supply pressurized air to quickly inflate the cushioning mat 10. For example, an air cylinder or accumulator that stores pressurized air can also be used.

[0020] A branch line communicating with the outside air is provided in the piping 22 between the expandable section 10A and the air source 20, and the branch line is equipped with an on-off valve 30. As shown in FIG. 1A, by operating the air source 20 with the on-off valve 30 closed, pressurized air is supplied from the air source 20 to the interior of the expandable section 10A, causing the expandable section 10A to expand, resulting in the cushioning mat 10 becoming inflated. When the internal pressure of the expandable section 10A reaches a predetermined pressure, the air source 20 is stopped. By keeping the on-off valve 30 closed, the predetermined pressure is maintained, and the cushioning mat 10 remains inflated. For simplicity's sake, the following description will refer to the cushioning mat 10 being inflated by filling it with air. Furthermore, by attaching a pressure adjustment valve to the cushioning mat, it is possible to use the air source 20 without stopping it.

[0021] In the drawings, the air source 20 in operation is shown in color, and the air source 20 in the stopped state is shown in white. Similarly, the on-off valve 30 in the closed state is shown in color, and the on-off valve 30 in the open state is shown in white. A hose may be used instead of the piping 22.

[0022] When the air source 20 is stopped and the on-off valve 30 is opened from its closed state as shown in Fig. 1B, the air in the expandable section 10A is released to the outside air through the intake and exhaust port 12, the piping 22, and the on-off valve 30. This causes the expanded expandable section 10A to contract, and as a result, the inflated cushioning mat 10 becomes contracted. For simplicity, the following description will be given of the cushioning mat 10 being deflated by discharging the air from inside the cushioning mat 10.

[0023] A device that includes an air source 20 and an on-off valve 30 connected by piping 22 and has the function of filling the cushioning mat 10 with air to inflate it and discharging the air into the cushioning mat 10 to deflate it can be collectively referred to as the "air filling and exhausting device 4." Note that if there are wiring, a control device, an operation panel, etc. for operating the air source 20 and the on-off valve 30, these are also included in the air filling and exhausting device 4.

[0024] In the above example, one intake / exhaust port 12 is provided in the cushioning mat 10, and an on-off valve 30 is arranged in the branched pipe 22, but this is not limiting. The cushioning mat 10 may also be provided with an intake port communicating with the air source 20 and an exhaust port communicating with the on-off valve 30, each separately. The cushioning mat 10 may also be provided with multiple exhaust ports.

[0025] The shape of the cushioning mat 10 in plan view is not limited to the rectangular shape described above, and any shape can be used, including a square, other polygons, a circle, and an ellipse. Taking a square as an example of the planar size of the cushioning mat 10, an example would be a square with one side measuring approximately 1 m to 4 m. The height dimension of the cushioning mat 10 when contracted depends on the thickness of the solid upper surface portion 10B, but can be in the range of 30 cm to 60 cm. The difference in height between the contracted and expanded states of the expandable portion 10A can be approximately 80 cm to 200 cm.

[0026] (Water structures and large ships Ship? (Method of boarding onto the deck of a small vessel equipped with boarding aids) Next, referring to Figures 2A to 2D, the passengers Ship? A method of boarding onto the deck of a small vessel equipped with the boarding assist device 2 from a water structure will be described below. The following will be described using an example of boarding onto the deck of a small vessel from a water structure, but the same method can be used for boarding onto the deck of a large vessel. Ship? The same applies when boarding onto the deck of a small vessel from a floating structure. Fig. 2A is a side view schematically showing a vessel equipped with a boarding assistance device according to a first embodiment of the present invention, stopped with its bow close to a floating structure. Fig. 2B is a side view schematically showing the state immediately before a passenger boards the vessel from the floating structure after inflating the cushioning mat of the boarding assistance device following the state shown in Fig. 2A. Fig. 2C is a side view schematically showing the state after the state shown in Fig. 2B when a passenger has boarded onto the cushioning mat. Fig. 2D is a side view schematically showing the state after the state shown in Fig. 2C when the inflated cushioning mat is deflated and the passenger is walking onto the cushioning mat to move onto the deck.

[0027] The impact-absorbing mat 10 of the boarding assistance device 2 according to the first embodiment of the present invention is placed on the bow deck 102 of the small vessel 100. More specifically, an outer frame 14 is attached to the bow deck 102 of the small vessel 100, and the impact-absorbing mat 10 is placed inside the outer frame 14. The outer frame 14 is made of a metal plate or a resin plate, and has a bottom member on which the impact-absorbing mat 10 is placed, and side members erected so as to surround the impact-absorbing mat 10, with the top surface being open.

[0028] The size of the bottom member in a plan view is the same as or slightly larger than the impact-absorbing mat 10. The height of the side members is sufficient to securely hold the impact-absorbing mat 10, and can be, for example, about 40 cm to 80 cm. In consideration of access for passengers, it is preferable to lower the height of at least the side members on the bow side.

[0029] It is preferable that the underside of the impact-cushioning mat 10 and the bottom surface of the outer frame 14, and the side surfaces of the impact-cushioning mat 10 and the inner surface of the outer frame 14 are detachably connected using, for example, hook-and-loop fasteners. In addition, drainage holes are opened in the side members of the outer frame 14 to prevent water from accumulating inside the outer frame 14. In the case of small boats, if water accumulates inside the outer frame 14, the weight balance of the boat is disrupted, increasing the risk of capsizing, so the presence of such drainage holes is practically important.

[0030] The air filling and exhausting device 4, which is composed of an air source 20 and an on-off valve 30 connected by a pipe 22, is preferably located near the impact cushioning mat 10 in consideration of operability, but can be located at any position depending on the layout of the small boat 100. In addition, in the illustrated example, the impact cushioning mat 10 is located on the bow side, but the impact cushioning mat 10 may also be located on the stern side.

[0031] As shown in Figure 2A, the ship stops with its bow close to the floating structure 200, and passengers P descend ladder 212 from the deck of the floating structure 200 to boarding and disembarking deck 210. The floating structure 200 may be either a fixed type or a floating type.

[0032] <Filling process> Then, before the passenger P boards the boat, as shown in Fig. 2B, the on-off valve 30 is closed and the air source 20 is operated to perform a filling step in which air is filled into the cushioning mat 10 to inflate it. After the cushioning mat 10 has reached a predetermined pressure and is fully inflated, the air source 20 is stopped while the on-off valve 30 is kept closed. This allows the cushioning mat 10 to maintain sufficient performance to cushion the impact when the passenger P boards the boat.

[0033] After the buffer mat 10 is fully inflated, the passenger P climbs onto the buffer mat 10 while holding on to the handrail 210A of the boarding and disembarking deck 210, as shown by the dotted arrow in Figure 2B. Since the passenger P climbs onto the buffer mat 10 which is filled with air and inflated, he or she can easily climb onto the small vessel 100 without feeling too much fear and with little mental stress. In addition, due to the cushioning properties of the buffer mat 10, the passenger will not injure their feet, and even if they fall, they will be wrapped in the buffer mat 10 and will not be injured. Therefore, even if the small vessel is experiencing large pitching motions, the passenger P can safely climb onto the floating structure 200 and onto the small vessel 100. Ship? Similarly, when transferring from a large ship to a small boat 100, the cushioning mat 10 is used to safely Ship? From there, passengers can board the small vessel 100.

[0034] Generally, the floor height H1 of the boarding and disembarking deck 210 is higher than the height H3 of the deck 102 of the small vessel 100, but the inflated cushioning mat 10 can reduce the height difference, thereby reducing the mental and physical burden on the passengers P. In particular, it is preferable that the floor height H1 of the floating structure 200 when boarding the small vessel 100 and the height H2 of the upper surface of the cushioning mat 10 when inflated with air are approximately the same height. Similarly, the floor height of the boarding and disembarking deck of a large vessel is higher than the height H3 of the deck 102 of the small vessel 100, but it is preferable that the floor height of the boarding and disembarking deck of a large vessel when boarding the small vessel 100 and the height H2 of the upper surface of the cushioning mat 10 when inflated with air are approximately the same height.

[0035] The height H1 of the floor of the floating structure 200 and the height of the large ship Ship When the height of the floor surface and the height H2 of the upper surface of the buffer mat 10 are approximately the same, the passenger P can board the small vessel 100 simply by moving almost sideways, so there is no feeling of jumping off, and the mental and physical burden on the passenger P can be greatly reduced.

[0036] <Exhaust process> After the passenger P gets on the cushioning mat 10, if the passenger P tries to stand on the cushioning mat 10, as shown in Fig. 2C, the feet of the passenger P will sink into the cushioning mat 10, making it difficult for the passenger P to walk and move on the cushioning mat 10. For this reason, the on-off valve 30, which is in the closed state, is switched to the open state to perform an exhaust process in which air is exhausted from inside the cushioning mat 10.

[0037] As a result, the shock absorbing mat 10 is in a contracted state as shown in FIG. 2D, so that the passenger P can easily walk on the shock absorbing mat 10 and move from the shock absorbing mat onto the deck. Such filling and exhaust processes are carried out on the water structure 200 and large ships. Ship side Therefore, there is no need for people to remain on the floating structure 200 side, and everyone on the floating structure 200 can transfer to the floating structure 200 or the large vessel 100. Ship? Even when transferring from a passenger seat to a small vessel 100, boarding can be completed without any problems.

[0038] In addition, people can move from small boats 100 to floating structures 200 or large ships. To the ship When transferring, it is preferable to keep the cushioning mat 10 in a contracted state so that the person can easily move on the cushioning mat 10.

[0039] As described above, the boarding assistance device 2 according to the first embodiment of the present invention is a device for assisting a passenger P to board a fixed or floating water structure 200 or a large ship. Ship? The boarding assistance device 2 is used when boarding onto the deck 102 of a small vessel 100 from a passenger P, and includes a cushioning mat 10 that is placed on the bow deck 102 of the small vessel 100 and inflates by filling it with air, and an air filling and exhaust device 4 for performing a filling step of filling the cushioning mat 10 with air to inflate it before the passenger P boards, and an exhaust step of exhausting air from inside the cushioning mat 10 after the passenger P boards the cushioning mat 10 so that the passenger P can move on the cushioning mat 10. Note that there may also be cases where the cushioning mat 10 is placed on the stern deck 102 of the small vessel 100.

[0040] This allows the small vessel 100 to be equipped with the equipment, reducing the mental burden on the passengers P and allowing them to safely board the floating structure 200 or large vessel. Ship? It is possible to provide a boarding assist device 2 that allows a person to board the small vessel 100 from any position. The above-described configuration and the effects of the configuration are similarly applicable to second to fifth embodiments of the present invention described below.

[0041] 200 floating structures and large ships On the ship Even if there are multiple passengers P, the above-mentioned filling and exhausting processes can be repeated each time a passenger P boards the small vessel 100, ensuring that all passengers P have boarded the vessel.

[0042] Even in such a case, the cushioning mat 10 can be quickly inflated by filling it with air using an air compressor that supplies pressurized air, or an air cylinder or accumulator that stores pressurized air.

[0043] In addition, the cushioning mat 10 can be deflated quickly by increasing the diameter of the intake and exhaust ports 12 and the piping 22. In addition, the cushioning mat 10 can be deflated even more quickly by providing multiple exhaust ports in the cushioning mat 10. As a result, the filling process and the exhaust process can be repeated quickly, and the passengers P can quickly complete boarding the small vessel 100.

[0044] (Boarding assistance device according to a second embodiment of the present invention) Next, a boarding assistance device according to a second embodiment of the present invention will be described with reference to Figures 3A and 3B. Figure 3A is a diagram showing the configuration of an air inflation / deflation device of the boarding assistance device according to the second embodiment of the present invention, and is a diagram showing the inflation of a shock-absorbing mat. Figure 3B is a diagram showing the deflation of the shock-absorbing mat shown in Figure 3A.

[0045] In the filling process, pressurized air is supplied, so that the cushioning mat 10 can be quickly inflated. On the other hand, the exhaust process, which deflates the inflated cushioning mat 10, takes a certain amount of time to complete exhaust, even if the number of exhaust ports in the cushioning mat 10 is increased slightly. In particular, when the filling process and the exhaust process are repeated, shortening the time for the exhaust process is a critical point.

[0046] The second embodiment has a primary objective of shortening the time of the exhaust stroke, which is a critical point in time reduction. For this reason, in the second embodiment, the air charging and exhaust device 4 includes an ejector 40 in addition to the air source 20 and the on-off valve 30. The ejector 40 has an internal flow path that connects a nozzle flow path 42 that communicates with the air source 20, a diffuser flow path 44 that communicates with the on-off valve 30, and a suction flow path 46 that communicates with the interior of the cushioning mat 10. The nozzle flow path 42 and the diffuser flow path 44 are arranged in a substantially linear manner, and the suction flow path 46, which extends in a direction that intersects with the nozzle flow path 42, connects to the region where the nozzle flow path 42 transitions to the diffuser flow path 44. The suction flow path 46 is connected to the region of the nozzle flow path 42 after air is ejected from the nozzle.

[0047] When the ejector 40 is to function as a normal ejector, the on-off valve 30 is opened and the air source 20 is operated. This causes pressurized air from the air source 20 to flow through the nozzle flow path 42 and toward the diffuser flow path 44. At this time, pressure energy is converted into velocity energy, and the air flow becomes low-pressure and high-velocity. This creates a low-pressure space and sucks in air toward the suction flow path 46. In other words, if air is filled inside the cushioning mat 10, the air is sucked in. The sucked air mixes with air from the air source 20, flows through the diffuser flow path 44, proceeds toward the on-off valve 30, and is released into the outside air. In the diffuser flow path 44, the velocity energy of the mixed air is converted into pressure energy, and while the velocity decreases, the pressure is restored with almost no loss.

[0048] 3A, in the filling step, the on-off valve 30 is closed and the air source 20 is operated, so that air flows from the nozzle flow path 42 through the suction flow path 46 in the direction opposite to the suction direction, filling the cushioning mat 10. Since pressurized air is supplied from the air source 20, the cushioning mat 10 can be inflated quickly.

[0049] In the exhaust stroke, as described above, the ejector 40 functions as a normal ejector. In the exhaust stroke, as shown in FIG. 3B , the on-off valve 30 is opened and the air source 20 is operated to supply pressurized air, causing the air to flow at low pressure and high speed from the nozzle flow path 42 to the diffuser flow path 44. This creates a negative pressure in the suction flow path 46, and the air inside the cushioning mat 10 is sucked in. The sucked air flows through the diffuser flow path 44 together with the air from the air source 20 and is released to the outside air via the open closing valve 30. Therefore, the air inside the cushioning mat 10 is quickly exhausted, allowing the cushioning mat 10 to quickly deflate.

[0050] As described above, in the boarding assistance device 2 according to the second embodiment of the present invention, the air filling and exhaust device 4 includes the air source 20 for supplying pressurized air, the ejector 40 having the nozzle flow path 42 in communication with the air source 20, the diffuser flow path 44 in communication with the on-off valve 30, and the suction flow path 46 in communication with the inside of the cushioning mat 10, and the on-off valve 30 for switching between an open state in which the diffuser flow path 44 is in communication with the outside air and a closed state in which the diffuser flow path 44 is closed off from the outside air. When the valve is closed and pressurized air is supplied from the air source 20, the air that has flowed through the nozzle flow path 42 flows through the suction flow path 46 in the opposite direction to the suction direction, filling the cushioning mat 10. During the exhaust process, when the on-off valve 30 is opened and pressurized air is supplied from the air source 20, the air becomes low-pressure and high-velocity and flows from the nozzle flow path 42 to the diffuser flow path 44, creating a negative pressure in the suction flow path 46. The air inside the cushioning mat 10 is sucked in and, together with the air from the air source 20, flows through the diffuser flow path 44 and is released into the outside air.

[0051] As mentioned above, passenger P is on the water structure 200 or a large ship. Ship? After a passenger P gets on the cushioning mat 10 filled with air, it is necessary to expel the air from inside the cushioning mat 10 so that the passenger P can move on the cushioning mat. In order to enable the passenger P to move quickly, it is necessary to expel the air from inside the cushioning mat quickly. In this embodiment, the air inside the cushioning mat 10 can be quickly sucked in and released into the outside air by the ejector effect that generates negative pressure by releasing pressurized air from the air source 20. Therefore, a person who has got on the cushioning mat 10 can walk on the deflated cushioning mat 10 and move onto the deck 102 without having to wait long. Furthermore, the cushioning mat 10 can be quickly expelled from the water structure 200 or a large ship. On the ship Even when there are multiple passengers P, the ejector effect is used to shorten the time of the exhaust process, thereby shortening the time of the filling process and exhaust process, and allowing all passengers P to quickly complete boarding.

[0052] In this way, the boarding assistance device 2 according to the second embodiment of the present invention, which is equipped with an ejector 40, can quickly deflate the inflated cushioning mat 10, thereby effectively shortening the time of the exhaust stroke, which is a critical point in time reduction during the filling process and the exhaust stroke.

[0053] (Boarding assistance device according to a third embodiment of the present invention) Next, a boarding assist device according to a third embodiment of the present invention will be described with reference to Figures 4 and 5. In the following, an example of boarding from a floating structure onto the deck of a small vessel will be described. Ship? The same applies when boarding from a floating structure onto the deck of a small vessel. Fig. 4 is a perspective view showing a frame structure of a boarding assistance device according to a third embodiment of the present invention. Fig. 5 is a side view showing a state just before a passenger boards a vessel from a floating structure using the boarding assistance device according to the third embodiment of the present invention.

[0054] In the third to fifth embodiments described below, the shock absorbing mat 10 and the air inflation / exhaust device 4 shown in the first or second embodiment can be employed. The boarding assistance device 2 according to the third embodiment includes a framework structure 50 erected from the deck 102 so as to surround the shock absorbing mat 10 (specifically, the outer frame 14).

[0055] In the example shown in Fig. 4, the framework structure 50 is formed by combining metal square timbers. No horizontal square timbers are provided on the upper side of the framework structure 50 on the bow side of the small vessel 100, and instead, cylindrical metal rod members 52 are attached. The rod members 52 extend approximately parallel to the deck 102. Additional square timbers can be provided to increase the strength of the framework structure 50, but as will be described later, no square timbers are placed below the rod members 52 to ensure access for passengers P, leaving space.

[0056] The members that make up the framework structure 50 are not limited to the illustrated square timbers, but may be any other members, including hollow or solid round bars, L-shaped or H-shaped steel beams, etc. The members may be joined by welding, or may be joined using coupling members. The framework structure 50 may be fixed to the deck 102 using fastening members, or by welding.

[0057] The size of the framework structure 50 in a plan view is slightly larger than that of the outer frame 14. The height of the framework structure 50 is determined appropriately depending on the height of the cushioning mat 10 when inflated and the height of the boarding and disembarking deck 210 of the floating structure 200 from the water surface. Typical heights of the framework structure 50 range from 2 m to 3 m. The outer diameter of the rod-shaped member 52 is preferably a size that is easy for a person to grip, and can be exemplified as 2.5 cm to 5 cm.

[0058] Next, referring to Figure 5, a method for a passenger P to board a small vessel 100 from a floating structure 200 using the framework structure 50 will be described. At this time, the buffer mat 10 is in a fully inflated state. As shown in Figure 5, a passenger P on the boarding and disembarking deck 210 of the floating structure 200 grasps a rod-shaped member attached to the framework structure 50, then hangs from the rod-shaped member 52, and then releases the rod-shaped member 52 he was holding and gets on the buffer mat 10. Note that when a large vessel is used, Ship? The same applies when boarding the deck of a small vessel.

[0059] The handrail 210A of the water structure 200, the boarding and disembarking deck 210, and the large ship Ship Compared to holding onto the handrail of the boarding and disembarking deck, passenger P can transfer to the small boat 100 by holding onto the rod-shaped member 52 on the side of the small boat 100, so that passenger P can safely move to the side of the small boat 100 while feeling the movement of the small boat 100 with his / her hands, especially when the small boat 100 is rocking.

[0060] As described above, the boarding assist device 2 according to the third embodiment of the present invention includes the framework structure 50 erected from the deck 102 so as to surround the shock-absorbing mat 10, and is mounted on the watercraft 200 or a large ship. On the ship A passenger P on board the ship grasps a rod-like member 52 extending substantially parallel to the deck 102 attached to the framework structure 50, hangs from the rod-like member 52, and then releases the rod-like member 52 and steps onto the shock absorbing mat 10.

[0061] The passenger P can grab the rod-shaped member 52 on the side of the small vessel 100 and transfer to the small vessel 100, which further reduces the mental burden and allows the passenger P to board the floating structure 200 or the large vessel more safely. Ship? From there, passengers can board the small vessel 100.

[0062] It should be noted that the above-mentioned "rod-shaped member 52 attached to the framework structure 50" is not limited to being directly attached to the framework structure 50 as described above, but also includes the case where the rod-shaped member 52 is attached to the framework structure 50 via a movable member, as shown below.

[0063] (Boarding assistance device according to a fourth embodiment of the present invention) Depending on the weather and other conditions, the small vessel 100 may be unable to approach the floating structure 200 or the large vessel more closely than in the example shown in FIG. 5, or the floating structure 200 or the large vessel may be unable to approach the floating structure 200 or the large vessel more closely than in the example shown in FIG. Ship There may be cases where the difference in height between the boarding and disembarking deck 210 and the deck 102 of the small vessel 100 is greater. In order to ensure boarding even in such cases, the following fourth and fifth embodiments are proposed.

[0064] First, a boarding assist device according to a fourth embodiment of the present invention will be described with reference to Figures 6, 7A, and 7B. In the following, an example of boarding from a floating structure onto the deck of a small vessel will be described. Ship? The same applies when boarding from a floating structure onto the deck of a small vessel. Fig. 6 is a perspective view schematically showing a swing arm provided on a framework structure of a boarding assistance device according to a fourth embodiment of the present invention. Fig. 7A is a side view schematically showing a state immediately before a passenger boards a vessel from a floating structure using the boarding assistance device according to the fourth embodiment of the present invention. Fig. 7B is a side view schematically showing a state in which the passenger has moved above the cushion mat after the state shown in Fig. 7A.

[0065] In the fourth embodiment, the rod-shaped member 52 is attached to the framework structure 50 via a swing arm 60 that rotates. More specifically, the swing arm 60 is rotatably attached to the upper side of the framework structure 50 on the bow side of the small vessel 100 via a rotation axis G that extends parallel to the deck 102. The swing arm 60 has two parallel arm plates, and the rod-shaped member 52 is attached between the two arm plates at the tip of the rotation on the opposite side of the rotation axis G.

[0066] As shown by the dotted arrow in Fig. 6, the swing arm 60 rotates approximately 90 degrees between a horizontal position, which is a position parallel to the deck 102, and a vertical position, which is a position perpendicular to the deck 102. As shown in Fig. 7A, in the horizontal position, the rod-shaped member 52 is located closer to the bow than the framework structure 50. Also, as shown in Fig. 7B, in the vertical position, the rod-shaped member 52 is located above the shock-absorbing mat 10. In any rotation position of the swing arm 60, the rod-shaped member 52 is always positioned to extend parallel to the deck 102.

[0067] In this embodiment, a torsion spring is provided at the rotation axis G, and the swing arm 60 is biased toward the horizontal position by the rotational force of the torsion spring. As will be described later, when a passenger P grasps the rod-shaped member 52 and hangs from it, the weight of the passenger P causes the swing arm 60 to rotate toward the vertical position against the biasing force of the torsion spring. Note that the means for biasing the swing arm 60 toward the horizontal position is not limited to the above. For example, a tension spring or compression spring that moves in the extension / contraction direction can also be used, or a cylindrical damper can also be used.

[0068] The swing arm 60 and the rotation axis G can be made of a metal material. The length of the swing arm 60 is determined based on the height of the cushioning mat 10 when inflated, the boarding and disembarking deck 210 of the floating structure 200, or the size of the deck 210 of a large ship. Ship The height can be determined appropriately depending on the height of the boarding and disembarking deck from the water surface, the height of the framework structure 50, etc., but examples include a height of 30 cm or more and 100 cm or less.

[0069] 7A and 7B, a method for a passenger P to board the small vessel 100 from the floating structure 200 using the framework structure 50 equipped with the swing arm 60 will be described. Because the swing arm 60 is biased in the direction of the horizontal position, the rod-shaped member 52 is located closer to the bow (front) than the framework structure 50, and is located closer to the bow (front) than the front end of the shock absorbing mat 10. Therefore, as shown in FIG. 7A, the rod-shaped member 52 is in a position that is easier for the passenger P standing on the boarding and disembarking deck 210 of the floating structure 200 to reach, and the passenger P can grab the rod-shaped member 52 relatively easily.

[0070] Next, the passenger P leaves the boarding / disembarking deck 210 and hangs from the rod-shaped member 52, causing the swing arm 60 to rotate from a horizontal position to a vertical position, and can move up to above the shock-absorbing mat 10 as shown in FIG. 7B. After that, the passenger P can release the rod-shaped member 52 that he / she has been holding and get on top of the shock-absorbing mat 10. Ship? The same applies when boarding the deck of a small vessel.

[0071] As described above, in the boarding assistance device 2 according to the second embodiment of the present invention, the rod-shaped member 52 is attached to the rotating tip of the framework structure 50, and the swing arm 60 is rotatably attached thereto. The swing arm 60 rotates between a horizontal position substantially parallel to the deck 102 and a vertical position substantially perpendicular to the deck 102. In the horizontal position, the rod-shaped member 52 is located on the bow side of the framework structure 50, and in the horizontal position, the rod-shaped member 52 is located above the buffer mat 10. On the ship When a passenger P holding the rod-shaped member 52 in a horizontal position hangs from the rod-shaped member 52, the swing arm 60 rotates to a vertical position due to the passenger P's own weight, causing the passenger P to release the rod-shaped member 52 that he or she was holding and step onto the cushioning mat 10. When the cushioning mat 10 is placed on the deck 102 on the stern side of the small vessel 100, the rod-shaped member 52 is located closer to the stern than the framework structure 50 in the horizontal position.

[0072] The swing arm 60 in the horizontal position allows the rod-shaped member 52 to be lifted from the framework structure 50 to the floating structure 200 or a large ship. On the ship The swing arm 60 is positioned close to the passenger P, and the passenger P can easily move up to the upper part of the cushioning mat 10 by rotating the swing arm 60 to the vertical position by the passenger P's own weight. Ship When there is a little distance between them, or when there is a boarding / disembarking deck 210 of the water structure 200 or a large ship Ship Even if there is a slight difference in height between the boarding and disembarking deck and the deck 102 of the small vessel 100, the swing arm 60 allows passengers P to board the small vessel 100 easily and safely.

[0073] (Boarding assistance device according to a fifth embodiment of the present invention) Next, a boarding assist device according to a fourth embodiment of the present invention will be described with reference to Figs. 8 to 10B. In the following, a case where a person boards a small vessel from a floating structure onto the deck of the vessel will be described as an example. Ship? The same applies when boarding onto the deck of a small vessel from a floating structure. Fig. 8 is a perspective view schematically showing a slide mechanism provided in a framework structure of a boarding assistance device according to a fifth embodiment of the present invention. Fig. 9A is a side view taken along the arrow AA in Fig. 8, showing a state in which the rod-shaped member is in the start position. Fig. 9B is a side view schematically showing the rod-shaped member climbing over the stopper mechanism in the start position and sliding toward the end position from the state in Fig. 9A. Fig. 10A is a side view schematically showing a state immediately before a passenger boards a vessel from a floating structure using a boarding assistance device according to a fifth embodiment of the present invention. Fig. 10B is a side view schematically showing the passenger moving above the cushion mat after the state shown in Fig. 10A.

[0074] In the fifth embodiment, the rod-shaped member 52 is attached to the framework structure 50 via a rail member 70. As shown in Fig. 8, both ends of the rod-shaped member 52 rest on rail surfaces 72 formed on two elongated members of the rail member 70 that extend parallel to one another. As shown by the dotted arrow in Fig. 8, the rod-shaped member 52 slides along the rail surfaces 72. The rail surface 72 is inclined so that it is higher at a start position that is closer to the bow than the framework structure 50 and lower at an end position above the shock-absorbing mat 10.

[0075] 9A, in the start position, a stopper mechanism 74 is formed, which includes a movable portion 74A whose rail surface 72 is raised upward by the biasing force of a spring, and a fixed portion 74B disposed above the movable portion 74A with a gap therebetween. The gap between the movable portion 74A and the fixed portion 74B in the raised state is smaller than the outer diameter of the rod-shaped member 52. Therefore, as shown in FIG. 9A, when no force is applied to the rod-shaped member 52, the rod-shaped member 52 is held in the start position.

[0076] If passenger P were to grab hold of rod-shaped member 52 held in the start position and hang from it, as shown in Figure 9B, passenger P's weight W would move rail surface 72 downward against the spring force, eliminating the bulge and allowing rod-shaped member 52 to pass between movable part 74A and fixed part 74B. As a result, rod-shaped member 52 from which passenger P is hanging slides along the slope of rail surface 72. It then comes to a stop when it abuts against end stopper 76 located at the end position. At any position above rail surface 72, rod-shaped member 52 is always positioned to extend parallel to deck 102.

[0077] The stopper mechanism 74 is not limited to the above configuration, and any other mechanism can be used as long as it can hold the rod-shaped member 52 in the starting position without any force being applied, and can release the hold with the passenger P's own weight, allowing the rod-shaped member 52 to slide.

[0078] 10A and 10B, a method for a passenger P to board the small vessel 100 from the floating structure 200 using the framework structure 50 equipped with the rail members 70 will be described. Because the rod-shaped member 52 is held in the starting position by the stopper mechanism 74, the rod-shaped member 52 is located closer to the bow (front) than the framework structure 50 and closer to the bow (front) than the front end of the buffer mat 10. Therefore, as shown in FIG. 10A, the rod-shaped member 52 is in a position that is easier for the passenger P standing on the boarding and disembarking deck 210 of the floating structure 200 to reach, and the passenger P can grab the rod-shaped member 52 relatively easily.

[0079] Next, the passenger P leaves the boarding / disembarking deck 210 and hangs from the rod-shaped member 52, causing the rod-shaped member 52 to slide along the slope of the rail surface 72. As a result, as shown in FIG. 10B, the rod-shaped member 52 can move to the end position above the buffer mat 10. Thereafter, the passenger P can release the rod-shaped member 52 that he / she was holding and get on top of the buffer mat 10. ship The same applies when boarding the deck of a small vessel.

[0080] As described above, in the boarding assistance device 2 according to the fifth embodiment of the present invention, the rail member 70 having the rail surface 72 along which the rod-shaped member 52 slides is attached to the framework structure 50, and the rail surface 72 is arranged at an incline so as to be higher at the start position closer to the bow than the framework structure 50 and lower at the end position above the shock absorbing mat 10, and is suitable for use on the floating structure 200 or a large ship. On the ship When a passenger P holding the rod-shaped member 52 at the start position hangs from the rod-shaped member 52, the weight of the passenger P causes the rod-shaped member 52 to slide from the start position to the end position, and the passenger P releases the rod-shaped member 52 that he or she was holding and steps onto the cushioning mat 10. If the cushioning mat 10 is placed on the deck 102 on the stern side of the small vessel 100, the rod-shaped member 52 will be located closer to the stern than the framework structure 50 at the start position.

[0081] The rod-shaped member 52 held at the start position is positioned closer to the passenger P on the floating structure 200 than the framework structure 50, and the weight of the passenger P causes the rod-shaped member 52 to slide to the end position, allowing the passenger P to easily move up to above the cushioning mat 10. Therefore, the small boat 100 and the floating structure 200 or the large boat Ship When there is a little distance between them, or when there is a boarding / disembarking deck 210 of the water structure 200 or a large ship Ship Even if there is a slight difference in height between the boarding and disembarking deck and the deck 102 of the small vessel 100, the rail member 70 allows passengers P to board the small vessel 100 easily and safely.

[0082] (General Description) <1> Passengers on fixed or floating water structures or large vessels Ship? A boarding aid used when boarding onto the deck of a small vessel from a A cushioning mat that is placed on the bow or stern deck of the small vessel and inflates by filling the interior with air; a filling step of filling the cushioning mat with air to inflate it before the passengers board; an exhaust step of exhausting air from inside the shock-absorbing mat after the passenger has boarded the shock-absorbing mat so that the passenger can move on the shock-absorbing mat; an air filling and exhausting device for carrying out the above; A boarding assistance device comprising: <2> When boarding the small vessel, Ship The height of the floor surface and the height of the upper surface of the cushioning mat inflated with air are approximately the same height. <1> The boarding aid described in <3> A plurality of passengers are on the water structure or large ship Ship? When each passenger boards the vessel, the filling step and the exhaust step are repeated each time the passenger boards the vessel. <1> or <2> The boarding aid described in <4> The cushioning mat is filled with air by an air compressor that supplies pressurized air, or an air cylinder or accumulator that stores pressurized air. <1> from <3> 1. A boarding assistance device according to any one of the preceding claims. <5> The air filling and exhaust device is an air source for supplying pressurized air; an on-off valve for switching between communication with the outside air and closed; an ejector having a nozzle passage communicating with the air source, a diffuser passage communicating with the on-off valve, and a suction passage communicating with the interior of the cushioning mat; Equipped with In the filling step, when the on-off valve is closed and pressurized air is supplied from the air source, the air that has flowed through the nozzle flow path flows through the suction flow path in a direction opposite to the suction direction and fills the cushion mat, In the exhaust process, when the on-off valve is opened and pressurized air is supplied from the air source, the air flows from the nozzle flow path to the diffuser flow path at a low pressure and at a high velocity, creating a negative pressure in the suction flow path, and the air in the cushioning mat is sucked in, flows through the diffuser flow path together with the air from the air source, and is released into the outside air. <1> from <4> 1. A boarding assistance device according to any one of the preceding claims. <6> A framework structure erected from the deck so as to surround the cushioning mat, The above-mentioned floating structures and large ships On the ship the passenger grasps a rod-shaped member attached to the framework structure and extending substantially parallel to the deck, hangs from the rod-shaped member, and then releases the rod-shaped member from his / her hand and steps onto the cushion mat. <1> from <5> 1. A boarding assistance device according to any one of the preceding claims. <7> The swing arm is rotatably attached to the framework structure, and the rod-shaped member is attached to a rotation tip of the swing arm. The swing arm rotates between a horizontal position substantially parallel to the deck and a vertical position substantially perpendicular to the deck, and in the horizontal position, the rod-shaped member is located on the bow side or the stern side of the framework structure, and in the horizontal position, the rod-shaped member is located above the cushion mat, The above-mentioned floating structures and large ships On the ship When the passenger grabs the rod-shaped member in the horizontal position and hangs from the rod-shaped member, the swing arm rotates to the vertical position due to the passenger's own weight, and the passenger releases the rod-shaped member that he / she has been holding and steps onto the cushion mat. <6> The boarding aid described in <8> a rail member having a rail surface along which the rod-shaped member slides is attached to the framework structure; the rail surface is inclined so that it is higher at a start position on the bow or stern side of the framework structure and lower at an end position above the shock-absorbing mat; The above-mentioned floating structures and large ships ship When the passenger in the boat grabs the rod-shaped member at the start position and hangs from the rod-shaped member, the rod-shaped member slides from the start position to the end position due to the passenger's own weight, and the passenger releases the rod-shaped member that he / she has been holding and steps onto the cushion mat. <6> The boarding aid described in

[0083] The above describes embodiments and examples of the present invention, but the disclosed contents may vary in the details of the configuration, and changes in the combination and order of elements in the embodiments and examples may be realized without departing from the scope and spirit of the claimed invention. [Explanation of symbols]

[0084] 2. Boarding aids 4. Air filling and exhaust system 10. Cushioning Mat 10A telescopic part 10B Top part 10C Cover 12 Intake and exhaust vents 14 Outer Frame 20 Air source (air compressor) 22 Piping 30 On-off valve 40 Ejector 42 Nozzle flow path 44 Diffuser passage 46 Suction channel 50 framework structure 52 Rod-shaped member 60 swingarm 70 Rail components 72 Rail surface 74 Stopper mechanism 74A Moving part 74B Fixed part 76 End stopper 100 small vessels 102 Deck 200 Floating structures 210 Embarkation and disembarkation deck 210A Handrail 212 Ladder G rotation axis

Claims

1. A boarding aid used when a passenger boards a small vessel from a fixed or floating water structure or a large vessel onto the deck of the vessel, A cushioning mat that is placed on the bow or stern deck of the small vessel and inflates by filling the interior with air; a filling step of filling the cushioning mat with air to inflate it before the passengers board; an exhaust step of exhausting air from inside the shock-absorbing mat after the passenger has boarded the shock-absorbing mat so that the passenger can move on the shock-absorbing mat; an air filling and exhausting device for carrying out the above; A boarding assistance device comprising:

2. A boarding assistance device as described in claim 1, characterized in that the height of the floor of the watercraft or the large vessel when boarding the small vessel is approximately the same as the height of the upper surface of the cushioning mat when inflated with air.

3. The boarding assistance device described in claim 1, characterized in that when multiple passengers board the small boat from the watercraft or the large boat, the filling process and the exhaust process are repeated each time each passenger boards.

4. 4. The boarding assistance device according to claim 3, wherein the cushioning mat is filled with air by an air compressor that supplies pressurized air, or an air cylinder or accumulator that stores pressurized air.

5. The air filling and exhaust device is an air source for supplying pressurized air; an on-off valve for switching between communication with the outside air and closed; an ejector having a nozzle passage communicating with the air source, a diffuser passage communicating with the on-off valve, and a suction passage communicating with the interior of the cushioning mat; Equipped with In the filling step, when the on-off valve is closed and pressurized air is supplied from the air source, the air that has flowed through the nozzle flow path flows through the suction flow path in a direction opposite to the suction direction and fills the cushion mat, 5. The boarding assist device according to claim 1, wherein, in the exhaust step, when the on-off valve is opened and pressurized air is supplied from the air source, the air flows from the nozzle flow path to the diffuser flow path at a low pressure and a high velocity, creating a negative pressure in the suction flow path, and the air in the cushioning mat is sucked in, flows through the diffuser flow path together with the air from the air source, and is released into the outside air.

6. A framework structure erected from the deck so as to surround the cushioning mat, A boarding assistance device as described in any one of claims 1 to 4, characterized in that the passenger on the floating structure or the large ship grasps a rod-shaped member extending approximately parallel to the deck attached to the framework structure, hangs from the rod-shaped member, and then releases the rod-shaped member and steps onto the cushioning mat.

7. The swing arm is rotatably attached to the framework structure, with the rod-shaped member attached to a rotation tip thereof, The swing arm rotates between a horizontal position substantially parallel to the deck and a vertical position substantially perpendicular to the deck, and in the horizontal position, the rod-shaped member is located on the bow side or the stern side of the framework structure, and in the horizontal position, the rod-shaped member is located above the cushion mat, The boarding assistance device described in claim 6, characterized in that when a passenger on the watercraft or the large ship grasps the rod-shaped member in the horizontal position and hangs from the rod-shaped member, the passenger's own weight causes the swing arm to rotate to the vertical position, causing the passenger to release the rod-shaped member they were holding and step onto the cushioning mat.

8. a rail member having a rail surface along which the rod-shaped member slides is attached to the framework structure; the rail surface is inclined so that it is higher at a start position on the bow or stern side of the framework structure and lower at an end position above the shock-absorbing mat; The boarding assistance device described in claim 6, characterized in that when a passenger on the watercraft or the large ship grabs the rod-shaped member at the starting position and hangs from the rod-shaped member, the passenger's own weight causes the rod-shaped member to slide from the starting position to the end position, and the passenger lets go of the rod-shaped member they were holding and steps onto the cushioning mat.

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