JPS6264650A - Passenger protecting device for traffic facilities - Google Patents

Abstract

PURPOSE:To protect passengers, by making a seat cushion into an inclined position to the rear side in a collision or in a crash, and protecting them with air bags from the front and the rear sides. CONSTITUTION:In an emergency, the backs of all seat cushions 1 drop altogether and the seat backs 2a incline to the rear side by handling the operation in an operation room. At the same time, air bags at the rear of the seat backs 2a expand extensively. Since the seat cushions 1 are supported by horizontal shafts 4 at their front parts, the upper sides incline backward to a proper angle as the backs drop, detecting the passengers from flying out frontward in a collision.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a passenger protection device for transportation facilities, and relates to a passenger protection device for transportation, in which a passenger in front of the train, bus, airplane, etc. is lined up in front and back facing the direction of travel. This prevents the vehicle from colliding with a seat or being crushed by a structural member.

(Prior Art) Conventionally, seat belts have been used as passenger protection devices for transportation systems that carry a large number of passengers to prevent the passenger's body from being crushed and crushed in the event of a collision. I've heard that there are some that allow the airbag to inflate in an emergency in front of the driver.

(Problem to be solved by the invention) Ground transportation collisions are hotly debated, and even in the case of aircraft crashes, the biggest cause of death or injury to passengers is the severe impact on their bodies. Even if a fire breaks out or someone falls into the sea,
If there are no injuries from the impact, there is a high possibility that the person will escape and be rescued.

The Japan Airlines plane crash in August 1985 resulted in 520 deaths and 4 survivors, but this would have been much easier if full-scale protection equipment had been installed to protect the passengers from the impact of the crash. Both indicate that many of the passengers in the back seats could have been saved.

The inventor has discovered that high-speed transportation, which saves many lives,
This invention aims to develop a passenger protection device that can be implemented immediately without major changes to the current seats, ignoring the current situation where people are reluctant to develop a passenger protection device and put it into practical use, considering that fatalities in crashes are unavoidable. It was taken as the purpose of

(Means for Solving the Problem) This invention provides a seat cushion whose front part is supported by a horizontal axis and whose rear part is unsupported so that it tilts backwards, and which is tensioned between the left and right outer frames of the seat back. The seat back is equipped with a seat back that can be tilted backwards by relaxing the tension in an emergency, and is attached to the rear of the backrest. an airbag that inflates by a simple activation operation in the driver's cab in an emergency), a mechanism that electrically or mechanically removes the support from the rear of the cushion, a mechanism that releases the tension of the backrest, and This is a passenger protection device for transportation, characterized in that it is equipped with a drive mechanism that interlocks the mechanism that opens the discharge valve.

(Function) In an emergency, each seat to which this invention is applied can be activated by a simple activation operation in the driver's cabin (in the case of an aircraft, the cockpit), such as by operating a push button or a handle, and the rear part of the seat cushion can sink all at once. , the backrest tilts backward, and the airbag at the rear of the backrest inflates greatly.

The front part of the seat cushion is supported by a horizontal axis, so
As the rear section sinks, the top surface tilts back, creating an angle that prevents passengers from flying forward in a collision. It also lowers the seating position of passengers.

At the same time, only the backrest of the seatback tilts backwards, causing the passenger's upper body to fall diagonally backwards at the same time as the buttocks drop. The passenger's body is now located within the seatback outer frame, with the lower half of the body in front of the outer frame and the upper half of the body behind it, sufficiently lower than the top of the outer frame. This position is suitable for preventing the seatback outer frame from crushing the passenger's body from the top, bottom, left, and right sides.

At the moment of a collision or crash, the airbag at the rear of each seat backrest prevents the passenger's upper body from colliding with the seat in front, a human body flying from behind, and being crushed by the seat. be. Inflated airbags are placed between the front and rear seats, and passengers are protected by the front and rear airbags (airbags can also be specially installed in front of the front row passengers).

When the air pack inflates, it not only protects passengers by sandwiching them from the front and back, but also prevents the seats from flying forward in the event of a collision.
It also has the effect of preventing the seat back from collapsing to a certain extent.

(Example) Fig. 1 shows a side view of two front and rear seats to which the present invention is applied, and Fig. 2 shows a back view thereof. / is the seat cushion, λ is the seat back, k is the backrest, b is the outer frame, J
is an airbag, 3α is a built-in gas cylinder, 3b is its release valve operation string, F is a floor, and M is a passenger.

Figures 4 and 5 show the state in which the protective device yt of the present invention is activated by a driver, pilot, etc., in an emergency, when preparing for a collision or crash.

The seat cushion is tilted backward, the backrest is loosened and tilted backward, and the airbag 3 is inflated.

The reason why the seat cushion / tilts backward is because the front part of the seat cushion is axially supported by a horizontal shaft, and the support band j that suspends the rear part of the cushion becomes loose. What keeps the support band 3 under tension is a common tension shaft 6 that also keeps the backrest under tension, and a ratchet claw operating mechanism 7 (which prevents rotation in the release direction).
Figure 3). The operating end of this operating shaft comes out from the groove in the floor r to the underfloor and is connected to the starting wire t from the driver's seat.When the wire g is pulled, the operating end of the operating shaft 7 is centered around its axis fulcrum α. turn to separate the ratchet pawl from the ratchet wheel at the 6th end of the tension shaft.

Then a support band! The stopper pin tα on the tension shaft B, which was tensioned by hooking the end, rotates and the support band is released! The end is pulled out through the band hole 9 of the outer frame b, and the seat cushion/rear part loses support and lowers to a predetermined position t, where it stops. In addition, IO in FIG. 3 is a bearing of the shaft 6, and l/ is a horizontal rotation guide member of the operating shaft 7.

The seat barafco of this invention is composed of a fixed outer frame and a backrest stretched between the left and right outer frames. The main material is a mesh made of wires 13, and is wrapped in a cover (not shown) or the like.

As shown in Fig. 2, each backrest band/co of each stage is connected to the aforementioned tension shaft A which is passed vertically inside one side of the outer frame 2b.
It is wound around the winding portions 6α to 6e of each stage having different outer diameters, and as in the case of the seat cushion support band 5 described above, the ratchet claw operating shaft 7 shown in FIG. 3 is not opened due to the starting wire.
The tension shaft 6 holds each backrest band 12 in tension.

When the sirachet claw is removed by the starting wire j and the weight of the passenger M causes the υ cushion support band 5 to rotate the tension shaft 6 in the loosening direction, each stage band 6α with respect to the backrest portion
~6e is also loosened by a preset length, and the fourth and fifth
As shown in the figure, the backrest section accepts the human body and tilts backwards like a hammock. Each stage winding section 6α to 6 of tension shaft B
The reason why the diameter of No. 6 is larger as you go higher is because the higher you go, the more you need to loosen the backrest bandsaw. By rotating tension WB6 at a certain angle, band 12
The length of loosening of the band 12 is proportional to the diameter of the winding portions 6α to 6# around which the band 12 is wound. Note that each of the backrest bands 2 in this embodiment has one end attached to a spring ( (not shown), and only the other end is wrapped around the tension shaft A, so when loosening it, it is necessary to put an elastic backrest cover (circuit) on the backrest so that the band saw does not rub against the back of passenger M. desirable.

The airbag 3 is a well-known structure in which a carbon dioxide gas cylinder is placed in a sealed bag and an operating string 3α that opens a release valve is hung outside.
Connect the operating string 3α end to the seat cushion/
It is fixed to the lower surface of the rear, and when the cushion l is tilted backward, the string 3α
is pulled to release coal gas into the bag. Initially, the bag is folded into the back of the backrest.

A switch installed in the driver's cab to start this invention device,
Although illustrations of levers and the like are omitted, in this embodiment, a starting wire t shown in cross section only in FIG. Just add a simple drive mechanism that moves the activation wires of each row and group all at once.

As a matter of fact, it is easy to electrically activate the protection devices for all seats at once, so I will omit the explanation.

Although one embodiment has been described above, the present invention can be varied and applied in various ways according to the well-known techniques of the designer who implements it, without changing its gist. The seat is not limited to a one-person seat as shown in the figure, but even if several people sit side by side, the seat cushion, backrest, and airbag may be longer than the other without any problems. For particularly large passengers, it may be possible to provide a large-back seat with a larger outer frame of the seat back.

The present invention can also be applied to seats with conventional seatbacks and variable inclination angles.

The means for tensioning the backrest between the left and right outer frames is not limited to the method of wrapping the backrest band around the tension shaft and unwinding it, as in the above embodiment; when the tension is released, it loosens and tilts backward. As long as the structure is fine, it can be left to the designer.

The way the airbag is folded and its shape when inflated should also be designed according to the seat situation. The interlocking mechanism does not necessarily have to be mechanically linked, but may also include centering and electric drive. The use of gravity in the above embodiments may be replaced by fluid pressure.

(Effects of the Invention) This invention enables drivers and pilots, who are in charge of human lives, to press a switch button, lever, etc. as a last resort to put all passengers in a backward leaning position that can withstand the impact of a collision or crash. ,
Airbags can now be used to protect the vehicle from the front and rear.

Passenger protection #ctIIL of this invention tilts the seat cushion and backrest backward and inflates the airbag at the rear of the backrest, so the passenger is forced to lean backwards to lower the center of gravity and prevents the passenger from jumping forward. In this position, you sink into the outer frame of the seat pack and are protected by inflated airbags in the front and rear.

Therefore, at the moment of a collision or crash, the passenger's body, which attempts to fly forward, is restrained by the seat cushion and airbag. The outer frame of the seat back prevents equipment on the top, bottom, left and right from landing on passengers.

Even if the impact is strong and the seat itself is blown forward, the outer frame, cushion, and airbag are all blown away, which greatly reduces the chance of fatal injuries.

Although transportation collisions, forced landings, and crashes are inevitable, this invention can significantly reduce the number of casualties.

[Brief explanation of drawings]

Fig. 1 is a side explanatory view of one embodiment of this invention, Fig. 2 is an explanatory rear view thereof, Fig. 3 is a detailed explanatory view of Fig. 2, and Figs. 4 and 5 show the operating state of the above embodiment. FIG. 2 is a side view and a plan view. /...Seat cushion, and...back also sag, 3.
... Airbag, za... activation wire.

Claims (1)

[Scope of Claims] A seat cushion whose front part is supported on a horizontal axis and which tilts backward when the rear support is removed, and which is stretched under tension between the left and right outer frames of the seat back, so that in an emergency, the tension can be reduced. a seatback backrest that can be tilted backwards by loosening the seatback; an airbag that is attached to the rear of the backrest and is filled with gas and inflated by opening the gas cylinder release valve in an emergency; a mechanism that electrically or mechanically removes the support of the rear part of the cushion by a simple activation operation in the driver's cab;
A passenger protection device for a transportation facility, comprising: a mechanism for loosening the tension on the backrest portion; and a drive mechanism for interlocking the mechanism for opening the release valve.