JP2001260993A - Emergency exit door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an emergency exit door applied to an aircraft, reducing the extruding force, and capable of being easily removed by fitting reinforcing materials to the door, and removing the door after removing them. SOLUTION: Lower reinforcing materials 11 having a T-shaped cross section are fitted on both sides of the emergency exit door 10 by rivets or the like, T-shaped upper reinforcing materials 1 are brought into contact with their flange faces, and pins 2 are inserted and supported at two positions. An L- shaped connecting metal fitting 3 is connected to one end of each pin 2, the connecting metal fittings 3 at two positions are connected together by a link 5, and the link 5 is connected to a handle (not shown in the figure) supported on a handle bracket 6. The door 10 is reinforced by the reinforcing materials 11, 1 to prevent its drop by wind pressure during the normal flight. At an emergency, the handle is operated to activate the link 5 and the connecting metal fitting 3, the pins 2 at two positions are extracted, the upper reinforcing materials 1 are removed, then the door 10 is pushed and removed, therefore the pushing force is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an emergency exit door,
Particularly, in an emergency escape door used for an aircraft, etc., the rigidity of the door is reduced at the time of operation, and the structure at the time of escape is facilitated.

[0002]

2. Description of the Related Art An emergency escape door is provided in an aircraft or the like, and the door is designed to be lightweight in order to reduce the weight, the periphery is supported by a rubber seal, and the door is fixed around the opening by a latch structure. . FIG. 7 shows the structure of the cabin of the helicopter. The cabin structure 40 is provided with two windows 41 together with two emergency exit doors 10 on both sides of the side. It is designed to open. 8 shows details of the emergency escape door 10 shown in FIG. 7, (a) is a perspective view of the entire door, and (b) is a cross-sectional view taken along the line DD in FIG. In (a), emergency escape door 1
Reference numeral 0 has a window at the center, two pins 24 are mounted on the upper part, and the latch 20 is mounted on the lower part so as to be rotatable in the R direction. The latch 20 is connected to the connecting rod 23, and by manually rotating the handle 23, the connecting rod 23 moves to the left and right, and the latch 20 is rotated in the R direction so that the latch 20 is rotated.
Move up and down.

FIG. 8B is a sectional view taken along line DD of FIG.
A rubber seal 13 is provided between the periphery of the door opening of the outer panel 12 and the door 10.
Are fitted to seal the periphery and support the door 10 periphery. The door 10 is also provided with two pins 24 at the upper part around the opening, and is fixed to the surroundings, and the latch 20 rotates downward to hook the door to the outer plate around the opening to fix the door. . To remove the door during an emergency escape, use the handle 2
3, rotate the latch 20 upward to remove it from the periphery of the opening, push the door 10 outward from the inside to release the surrounding rubber seal 13, and slide the pin 24 to remove it from the periphery of the opening. 10 is released by pushing it out.

[0004]

As described above, the conventional emergency escape door 10 has a structure in which the periphery is supported by the rubber seal 13 and the upper and lower sides are fixed to the opening by the pins 24 and the latches 20. At times, it is necessary that the door 10 is easily pushed outward by releasing the latch of the latch 20 and pushing it from the inside. For this reason, the door has a lightweight structure. However, if the door is made too thin or light, the rigidity of the door is insufficient, and the door may be bent by wind pressure and fall off. In order to prevent the door from falling off, it is conceivable to reinforce the door and increase the rigidity. For example, countermeasures as shown in FIGS. 5 and 6 have been taken.

FIG. 5 is a perspective view of a reinforced emergency exit door. In order to increase the rigidity of the emergency exit door 10, H
A reinforcing member 30 having a mold section is attached. FIG. 6 shows FIG.
The reinforcement member 30 is fixed to the inside of the emergency exit door 10 by bolts or rivets, and the periphery thereof is fixed by being fitted with a rubber seal 13 between the outer plate opening. This type of door structure increases the rigidity of the door and prevents it from falling off due to wind pressure.On the other hand, the push-out force of the door during emergency escape increases, making it difficult to remove the door during escape. It will be a hindrance.

Accordingly, the present invention enhances the rigidity of the emergency exit door to prevent deflection due to the wind pressure of the door at normal times, thereby preventing the emergency exit door from falling off. It was made to provide an escape door.

[0007]

The present invention provides the following means in order to solve the above-mentioned problems.

[0008] In an emergency escape door which is removed outside the cabin and opened in an emergency, a T-shaped lower reinforcement member fixed along both sides or the entire periphery of the inside of the door has the same T-shaped cross section. Along with the lower reinforcement, the reinforcements are opposite to each other,
An upper reinforcing member arranged in contact with flange surfaces projecting in a direction orthogonal to a surface of the door, and a plurality of upper reinforcing members arranged along the flanges of the lower and upper reinforcing members and penetrating both flanges to provide the lower reinforcing member. A plurality of pins for detachably supporting the upper reinforcing member on a member, a link mechanism for connecting one end of each of the plurality of pins and pulling the plurality of pins in a pulling-out direction at the same time, and the link attached to the lower reinforcing member. An emergency escape door comprising a handle for operating a mechanism.

In the emergency escape door of the present invention, a lower reinforcing member having a T-shaped cross section is fixed to the inside of the door, and the upper reinforcing member projects on and comes into contact with the flanges, and a plurality of pins connect both flanges. In an ordinary state, such as in a cabin of an aircraft, the emergency escape door has an upper and lower reinforcing material of H-shape to reinforce both sides or both sides and the upper and lower periphery of the door. Therefore, at normal times, the door has high rigidity, does not bend by wind pressure, and is prevented from falling off.

[0010] In an emergency, the latch of the door is released and the door is pushed outward to remove the door. However, the rigidity is too high to require a large pushing force, which hinders removal in an emergency. Then, first, when the link mechanism is operated by operating the handle and a plurality of pins are pulled out from the flange surface, the upper reinforcing member is detached from the lower reinforcing member, and the door is reinforced only by the lower reinforcing member, and the rigidity is reduced. Thereafter, if the door is pushed outward, the force for pushing the door may be small, so that the door can be easily removed in an emergency.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a perspective view of an emergency escape door according to one embodiment of the present invention. In the figure, a lower reinforcing member 1 of a T-shaped section is provided inside an emergency escape door 10.
1 is fixed with screws or rivets. In this example, the lower reinforcing members 11 are attached to both sides of the door. As will be described later, the upper reinforcing member 1 having a T-shaped cross section is removably attached to the lower reinforcing member 11 and the upper reinforcing member 1. It constitutes an H-shaped reinforcement.

Reference numeral 2 denotes a pin, which penetrates the two flange surfaces on which the lower reinforcing member 11 and the upper reinforcing member 1 are overlapped, and supports the upper reinforcing member 1 on the lower reinforcing member 11. Is provided. Reference numeral 3 denotes a connection fitting, which is connected to one end of the pin 2. Reference numeral 4 denotes a bracket,
Are rotatably supported by the lower reinforcing member 11. Reference numeral 5 denotes a link, which is connected to the upper and lower two connection fittings 3 and a handle (not shown). Reference numeral 6 denotes a handle bracket, which supports a handle (not shown) and is fixed to the mounting portion 14.

The mounting portion 14 is fixed to the lower end of the lower reinforcing member 11 fixed to the door 10.

Although the lower and upper reinforcing members 11 and 1 are provided only on both sides in the example of FIG. 1, the rigidity of the door 10 is increased by providing the reinforcing members on the upper and lower sides as well. May be appropriately selected according to the conditions.

FIG. 2 is a sectional view taken along the line AA in FIG.
The flange 11a of the lower reinforcing member 11 fixed to the emergency exit door 10 and the flange 1a of the upper reinforcing member 1 are joined to each other, a pin 2 penetrates both, and the upper reinforcing member 1 is connected to the lower reinforcing member 11. I support it. A connection fitting 3 is connected to one end of the pin 2. A rubber seal 13 is fitted in a gap between the periphery of the door 10 and the outer plate 12 to seal the inside and outside of the door and to support the periphery of the door with the rubber seal 13.

3A and 3B show a pin driving mechanism, wherein FIG. 3A is a front view, and FIG. 3B is a view taken in the direction of arrows BB in FIG. 3A. In both figures, the pin 2 penetrates both flanges of the lower reinforcing member 11 and the upper reinforcing member 1 and supports the upper reinforcing member 1 on the lower reinforcing member 11. An L-shaped connection fitting 3 is provided at one end of the pin 2.
Are connected to each other, and a central portion 3 a of the connecting fitting 3 is rotatably connected to the bracket 4, and the bracket 4 is fixed to the lower reinforcing member 11. In this example, two such pins 2, connecting fittings 3, and brackets 4 are provided at the top and bottom.

Reference numeral 5 denotes a link, which is connected to the other ends of the two connection fittings 3 and the lower end thereof is connected to the arm 8 of the handle 7, and the rotation shaft 9 of the handle 7 is connected to the handle bracket 6. The mounting bracket 1 is rotatably supported, and the handle bracket 6 is fixed to the lower end of the lower reinforcing member 11.
4 is fixed. In the above-described example, the pin support portion including the pin 2, the connection fitting 3, and the bracket 4 has been described as an example in which the pin support portion is provided at two places vertically, but this support portion is provided at three places or four places as necessary. Any number may be provided depending on the size of the door and the shape and size of the reinforcing material.

In the structure of the pin supporting portion having the above structure, when the door 10 is mounted, the lower reinforcing member 11 of the door 10 and the flange surface of the upper reinforcing member 1 are brought into contact with each other, and the pin 2 is inserted into the hole to insert the upper reinforcing member 1. Is attached to the lower reinforcing member 11. At the time of emergency escape, the latch of the door is hooked down, and the door is pushed outward to remove the door. However, when the upper reinforcement 1 is attached, the door has high rigidity, and a large force is required to push and remove the door. Therefore, before pushing the door 10 on the outside 1, the upper reinforcement 1 is first removed.

When the upper reinforcing member 1 is to be removed, when the handle 7 is rotated, the rotation rotates the lever 8, pulling the link 5 downward in the figure in the S direction, and the connecting fitting 3 rotates in the P direction. Then, the pin 2 is pulled out of the lower reinforcing member 11 and the upper reinforcing member 1 by pulling the pin 2. Since the upper and lower two pins 2 are connected by the link 5, the pins 5 are simultaneously pulled out by the movement of the link 5 in the S direction, and the upper reinforcing member 1 is released from the lower reinforcing member 11 by the pin 2, and freely. Can be easily removed.

When the upper reinforcing member 1 is removed, the door 10 is reinforced only by the lower reinforcing member 11 and its rigidity is weakened.
It can be easily removed by pushing 0 from inside. Further, since the upper reinforcing material 1 is usually attached to the lower reinforcing material 11, the reinforcing material of the door is composed of the lower reinforcing material 11 and the upper reinforcing material 1, the rigidity of the door increases, and the door is bent by wind pressure. Dropping is prevented.

FIG. 4 is a perspective view showing a specific structure example applied to the helicopter cabin structure of the emergency escape door according to the embodiment of the present invention. The emergency escape door 10 has the same structure as that described in the conventional example of FIG. The upper part has a pin 24 and the lower part has a latch 2.
The latches are provided at two places, 20 and 21, and are connected by connecting rods 22. These two latches are turned up and down by a handle 23, and are hooked on the opening to fix the door. Configuration. In this example, the upper reinforcement 1 is provided on each of the four sides of the door 10, and the attachment of the upper reinforcement 1 is the same as the structure shown in FIGS.
A T-shaped lower reinforcing member is fixed to the door, and the upper reinforcing member 1 is supported on the lower reinforcing member by pins. In this example, the latches are mounted at two locations 20, 21 in comparison with the conventional example of FIG. 8, and the force for fixing the door is increased by the amount of reinforcement with the upper reinforcement 1 and the lower reinforcement. I have.

According to the embodiment described above, the lower reinforcement 11 of the T-shaped section is fixed to the emergency escape door 10 of the helicopter, and the upper reinforcement 1 is brought into contact with the flange of the lower reinforcement 11, Since the upper reinforcing member 1 is supported by the lower reinforcing member 11 by passing the pins 2 through both, the door does not bend due to wind pressure at normal times, and the door is prevented from falling off. In an emergency, before removing the door, the handle 7 is operated to operate the link 5 and the connection fitting 3 to remove the pin 2, thereby removing the upper reinforcing member 1, and then pushing the door 10 from the outside to remove it. As a result, the door can be removed without requiring a large force at the time of emergency escape.

[0023]

The emergency escape door of the present invention is an emergency escape door which is detached and opened to the outside of the passenger compartment in the event of an emergency. The upper reinforcing member is disposed by contacting the reinforcing member with a flange surface projecting in a direction perpendicular to the surface of the door, with the reinforcing member having a T-shaped cross section and the reinforcing member facing in the opposite direction along the lower reinforcing member. When,
A plurality of pins arranged at a plurality of locations along the flanges of the lower and upper reinforcements, penetrating both flanges, and detachably supporting the upper reinforcements on the lower reinforcements, and respectively connecting one ends of the plurality of pins. A link mechanism for pulling out the plurality of pins in a pulling-out direction at the same time, and a handle attached to the lower reinforcing member for operating the link mechanism are provided. With such a configuration, the following effects can be obtained.

The emergency escape door has upper and lower reinforcing members of H-shape to reinforce both sides of the door or both sides and the upper and lower periphery. Therefore, at normal times, the door has high rigidity, does not bend by wind pressure, and is prevented from falling off.

In an emergency, the door is unlatched and the door is pushed outward to remove it. However, the rigidity is too high and a large pushing force is required, which hinders emergency removal. Then, first, when the link mechanism is operated by operating the handle and a plurality of pins are pulled out from the flange surface, the upper reinforcing member is detached from the lower reinforcing member, and the door is reinforced only by the lower reinforcing member, and the rigidity is reduced. Thereafter, if the door is pushed outward, the force for pushing the door may be small, so that the door can be easily removed in an emergency.

[Brief description of the drawings]

FIG. 1 is a perspective view of an emergency exit door according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

3A and 3B show a reinforcing member removing drive mechanism according to an embodiment of the present invention, wherein FIG. 3A is a front view, and FIG. 3B is a view taken along the line BB in FIG.

FIG. 4 is a perspective view of an emergency exit door applied to the helicopter cabin structure according to the embodiment of the present invention.

FIG. 5 is a perspective view of a door reinforced with a conventional emergency escape door.

6 is a sectional view taken along the line CC in FIG.

FIG. 7 is a perspective view showing an example of a cabin structure of a helicopter.

8 shows an emergency escape door applied to the cabin structure of FIG. 7, (a) is a perspective view of the entire door, and (b) is a cross-sectional view taken along the line DD in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper reinforcing material 2 Pin 3 Connection metal fitting 4 Bracket 5 Link 6 Handle bracket 7 Handle 8 Arm 9 Axis 10 Emergency escape door 11 Lower reinforcing material 12 Outer plate 13 Rubber seal 14 Mounting part

Claims (1)

[Claims] 1. An emergency escape door which is removed outside the cabin in an emergency and opens, wherein a lower reinforcement member of a T-shaped section fixed along both sides or the entire periphery of the inside of the door and a cross section of T
An upper reinforcing member disposed in contact with flange surfaces protruding in a direction orthogonal to a surface of the door in a direction opposite to the reinforcing member along the lower reinforcing member, and A plurality of pins arranged at a plurality of positions along the flange of the reinforcing member, penetrating both flanges, and detachably supporting the upper reinforcing member on the lower reinforcing member, and connecting one end of each of the plurality of pins to the plurality of pins; And a handle attached to the lower reinforcing member for operating the link mechanism.