KR101717916B1 - Emergency Power Assist System - Google Patents

Abstract

The emergency situation power assisting apparatus according to the present invention is an emergency situation power assisting apparatus capable of opening an aircraft door in an emergency situation and controlling the damping force of the aircraft door, A suction block provided at one side of the metal bottle for supplying gas to the metal bottle through a suction valve formed therein, a pressure gauge provided at one side of the suction block for measuring a pressure of the gas, A rupture disk provided at the other side of the rupture disk to close the discharge port of the gas and to open the discharge port while being ruptured due to an external impact and a rupture needle formed inside the rupture disk to rupture the rupture disk, A discharge block for discharging gas from the metal bottle, and a discharge block provided at one side of the discharge block, An actuator including a piston inserted to allow the piston to move and an actuator shaft extending from the piston, a snubber shaft connected to the actuator shaft and operated according to the reciprocating movement of the actuator shaft, And a snubber that controls a damping force of the airplane door.

Description

[0001] Emergency Power Assist System [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency situation power assisting device, and more particularly, to an emergency situation power assisting device capable of keeping a gas pressure constant and reducing noise.

Generally, the EPAS (Emergency Power Assist System) is an aircraft door operating system mounted on an aircraft door. The EPAS is equipped with a snubber, which is equipped with a bypass valve for auxiliary power transmission when the door is opened and closed.

Generally, in the case of aircraft doors, snubbers are used in conjunction with actuators and gas bottles to limit the speed of aircraft doors in normal and emergency situations.

In an emergency situation, such as a landing or an emergency landing, the aircraft body may tilt and the aircraft door may not open easily due to interference with obstructions or other debris.

What is required is a system to help the aircraft door open forcefully so that the aircraft door can be opened safely and quickly so that passengers can safely escape in an emergency.

In the conventional case, gas is delivered from the gas bottle storing a considerable amount of nitrogen to the actuator through the tube. A safety valve is provided in the actuator to maintain the static pressure of the gas. Since the gas is continuously discharged through the safety valve, there is a problem that the volume of the gas bottle becomes large to store the extra gas.

In addition, since the amount of gas discharged from the safety valve is not constant, it is difficult to keep the pressure of the gas for driving the aircraft door constant. To control the pressure of the gas, structural problems and correction work must be performed.

Further, there is a problem that noise is generated while gas is discharged through the safety valve.

Further, there is a problem in that, after an operator grasps and manipulates an aircraft door handle by hand during an emergency situation, the time required for the actual aircraft door to be opened is delayed, so that the person can escape.

Korean Patent No. 10-1434792

An object of the present invention is to provide an emergency situation power assist device capable of reducing the volume of a gas bottle storing nitrogen.

Another object of the present invention is to provide an emergency situation power assisting device which is provided with a separate regulator part capable of regulating the pressure of the gas and can keep the gas pressure constant.

Another object of the present invention is to provide an emergency situation power assisting device capable of eliminating a safety valve for maintaining a static pressure of an internal gas in an actuator to reduce noise generated when gas is discharged.

It is another object of the present invention to provide an emergency situation power assist device which is provided with a time delay portion separately and can delay the opening time of an actual aircraft door after a person grasps and manipulates the aircraft door handle during an emergency situation by hand.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems to be solved by the present invention, which are not mentioned here, can be understood by referring to the following description to those skilled in the art It will be understood clearly.

The emergency situation power assisting device according to the present invention is an emergency situation power assisting device capable of opening an aircraft door in an emergency situation and controlling the damping force of the aircraft door, A suction block provided at one side of the metal bottle for supplying gas to the metal bottle through a suction valve formed therein, a pressure gauge provided at one side of the suction block for measuring a pressure of the gas, A rupture disk provided at the other side of the bottle to close the discharge port of the bottle and to open the discharge port while being ruptured by an external impact; and a rupture needle provided at one side of the rupture disk to rupture the rupture disk A discharge block for discharging the gas from the metal bottle, a discharge block provided at one side of the discharge block, An actuator including a piston inserted to allow the piston to move and an actuator shaft extending from the piston, a snubber shaft connected to the actuator shaft and operated according to the reciprocating movement of the actuator shaft, And a snubber that controls a damping force of the airplane door.

Wherein the discharge block includes a rupture portion that forms a first space therein and receives the rupture needle connected to the first spring in a compressed state in the first space, A second space formed in the second space and receiving the poppet connected to the second spring in the second space, a third space communicating with the regulator part through a second flow path, And a time delay portion for receiving the piston shaft connected to the fourth spring in the space.

The rupturing unit may further include a spool for supporting the rupturing needle to maintain the compressed state of the rupturing needle.

Wherein the regulator portion includes a valve provided at one side of the poppet to form a gap between the valve and the poppet to allow the gas to flow therethrough, A diaphragm connected to a third spring located in the second space and maintained in an equilibrium state by the second spring and the third spring, a diaphragm provided at one side of the third spring, And a spring controller for adjusting the gap by changing the gap.

The time delay unit is characterized in that the fourth spring is compressed due to the pressure of the gas, and the second flow path is selectively opened while the piston shaft flows.

A discharge hole is formed in the actuator, and the piston is selectively opened according to the reciprocating movement of the piston, so that the gas is discharged to the outside.

According to the solution of the above-mentioned problems, the emergency situation power assist device of the present invention has an effect of reducing the volume of the gas bottle storing nitrogen.

In addition, there is an effect that the pressure of the gas can be maintained at a constant level by providing a separate regulator portion capable of controlling the pressure of the gas.

In addition, there is an effect that the safety valve for maintaining the static pressure of the gas inside the actuator can be removed to reduce the noise generated when the gas is discharged.

In addition, there is an effect that a time delay portion is additionally provided, so that after the person grips and manipulates the door handle of an airplane during an emergency situation, the time for opening the actual airplane door is delayed to provide a spare time for the person to escape .

1 is a perspective view illustrating a configuration in which an emergency situation power assist device according to an embodiment of the present invention is installed on an aircraft.
2 is a perspective view showing an entire configuration of an emergency situation power assist device according to an embodiment of the present invention;
3 is a sectional view showing a detailed configuration of a metal bottle according to an embodiment of the present invention;
4 is a cross-sectional view illustrating a detailed configuration of an actuator according to an embodiment of the present invention;
5 is a cross-sectional view showing a detailed configuration of a snubber according to an embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a configuration in which an emergency situation power assisting device according to an embodiment of the present invention is installed in an airplane, FIG. 2 is a perspective view showing an overall configuration of an emergency situation power assisting device according to an embodiment of the present invention, FIG. 3 is a cross-sectional view illustrating a detailed structure of a metal bottle according to an embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating a detailed structure of an actuator according to an embodiment of the present invention. Fig. 7 is a cross-sectional view showing a detailed configuration of a snubber according to an example.

As shown in FIG. 1, an emergency situation power assist apparatus according to an embodiment of the present invention is connected between an aircraft body side frame and an aircraft door.

The suspension arm A is connected to a door frame C for supporting an airplane door and the door frame C is driven by a gear mechanism B linked thereto.

A bottle assembly 1 is provided outside the suspension arm A and an actuator 2 and a snubber 3 are installed inside the suspension arm A.

As shown in FIG. 2, at one side of the bottle assembly 1, there is provided an actuator 2 for generating a power for opening and closing an aircraft door.

The actuator 2 is connected to the bottle assembly 1 through a tube 4 to supply gas for generating power to the actuator 2.

A snubber 3 is provided at one side of the actuator 2 to apply a resistance force in a direction opposite to the opening and closing direction of the aircraft door so as to prevent the aircraft door from opening suddenly.

Gas is injected from the bottle assembly 1 when the aircraft door needs to be opened as in the case of an emergency landing of the airplane and the gas is injected from the actuator 2 The piston 203 inside the actuator 2 is pushed in one direction and the aircraft door is opened by the power generated when the piston 203 inside the actuator 2 is pushed.

The snubber 3 is interlocked with the actuator 2 so that the aircraft door is not opened or closed beyond the reference speed.

Hereinafter, the detailed structure of the bottle assembly 1 will be described in more detail with reference to FIG.

The bottle assembly 1 includes a metal bottle 101 for storing gas, a suction block 103 for supplying the gas into the metal bottle 101, a pressure gauge 104 for measuring the pressure of the gas, And a discharge block 106 for discharging the gas. The discharge block 105 discharges the gas.

The metal bottle 101 forms a cylindrical inner space and stores nitrogen in the inner space at a pressure of 3000 psi.

The suction block 103 is provided at one side of the metal bottle 101. The suction block 103 forms a space in the interior of the metal bottle 101 so as to communicate with the metal bottle 101 and is provided with a suction valve 102 inside the metal bottle 101 through the suction valve 102 And serves to charge the gas. The inlet of the suction valve 102 is welded by a cap to prevent leakage of the gas.

The pressure gauge 104 is provided at one side of the suction block 103. The pressure gauge 104 serves to measure the pressure of the gas to prevent damage to the accessory due to excessive pressure of the gas supplied into the metal bottle 101.

The rupture disk (105) is provided on the other side of the metal bottle (101). The rupture disk 105 closes an outlet formed at an end of the metal bottle 101 so that the gas can be stored in the metal bottle 101. In an emergency, the rupture disk 105 is ruptured by an external impact to open the discharge port.

The discharge block 106 is provided on one side of the rupture disk 105. The discharge block 106 includes a rupturing portion 106a, a regulator portion 106b, and a time delay portion 106c which are divided into separate spaces and perform their respective roles.

The rupturing portion 106a is formed with a first space adjacent to the rupture disk 105. [ A first spring 1062 in a compressed state is connected to the first space and a burst needle 1061 connected to the first spring 1062 is provided. The rupture needle 1061 is arranged in the shape of a sharp needle at one end and is directed toward the rupture disk 105.

A spool 1063 is provided on one side of the rupture needle 1061. One end of the spool 1063 supports the side end of the rupturing needle 1061 so that the first spring 1062 can be maintained in a compressed state, and the other end is connected to the elastic member.

When the spool 1063 is pulled in one direction, the bursting needle 1061 is in a free state, and the first spring 1062 in the compressed state returns to its original state, and the bursting disk 105 is destroyed at a price.

The regulator portion 106b is formed on one side of the rupturing portion 106a. The regulator portion 106b has a second space formed therein to communicate with the first space of the rupture portion 106a through the first flow path 1064. [

A second spring 1066 is connected to the second space, and a poppet 1065 connected to the second spring 1066 is provided. The poppet 1065 is a plate-shaped body forming an inclined surface, and is disposed adjacent to the first flow path 1064.

A valve 1067 is provided on one side of the poppet 1065. The valve 1067 has a hole through which gas can flow, and forms a gap between the hole and the inclined surface of the poppet 1065 to allow the gas to flow.

A third spring 1068 is connected to the inside of the second space opposite to the second spring 1066. The diaphragm 1069 connected to the third spring 1068 is connected to the poppet 1065 extending through the hole of the valve 1067.

The diaphragm 1069 may be maintained in an equilibrium state by the second spring 1066 and the third spring 1068.

A spring controller 1070 is provided on one side of the third spring 1068. The spring controller 1070 is configured to control the compression of the third spring 1068 outside the discharge block 106. When the spring controller 1070 is rotated to compress the third spring 1068, The diaphragm 1069 connected to the third spring 1068 is moved in one direction and the poppet 1065 connected to the diaphragm 1069 is simultaneously moved in one direction.

At this time, the gap is adjusted by the balance of the force of the second spring 1066 and the force of the third spring 1068.

The time delay portion 106c is formed on one side of the regulator portion 106b. The time delay unit 106c has a third space formed therein to communicate with the second space of the regulator unit 106b through the second flow path 1071. [

A fourth spring 1073 is connected to the third space and a piston shaft 1072 connected to the fourth spring 1073 is provided. The piston shaft 1072 selectively opens the second flow path 1071.

An outlet 1074 for discharging the gas to the outside is provided at one side of the third space. The outlet 1074 communicates with the third space through a second flow path 1071 and is connected to an actuator 2 and a tube 4 to be described below. .

When the rupture disk 105 is broken, the gas stored in the metal bottle 101 is discharged through the discharge port and supplied to the second space through the first flow path 1064.

The pressure of the gas is kept constant while the gap is adjusted due to the balance of the force of the second spring 1066 and the force of the third spring 1068 and the pressure of the gas Gas is supplied.

When the gas is supplied to the third space, the fourth spring 1073 is compressed and the piston shaft 1072 connected to the fourth spring 1073 moves in the direction of the outlet 1074, And communicates with the first flow path 1074 and the second flow path 1071 to discharge the gas.

The pressure of the gas exiting through the outlet 1074 can be kept constant by balancing the forces of the second spring 1066 and the third spring 1068. [

Referring to FIG. 4, an actuator 2 is provided on one side of the bottle assembly 1. The actuator (2) has a suction port (201) formed at one side of the cylindrical body, and the tube (4) is connected to the suction port (201). The gas is supplied into the actuator 2 through a third flow path 202 formed in communication with the internal space of the actuator 2.

A piston (203) is provided inside the actuator (2) to reciprocate along the inner space. And an actuator shaft 204 extending from the piston 203 is provided. An orifice 205b is formed on the outer cover 205a for supporting the end portion of the actuator 2 to prevent the actuator 2 from being evacuated. A plurality of discharge holes 206 are formed in the actuator 2.

When the gas is supplied into the actuator 2 through the third flow path 202, pressure is applied to the actuator shaft 204 and the piston 203. When the pressure of the gas is sufficient, the piston (203) and the actuator shaft (204) are pushed in one direction.

At this time, when the gas is supplied into the actuator 2 in an amount larger than a predetermined amount, the piston continuously moves to open the discharge hole 206. And the gas is discharged to the outside through the discharge hole 206.

The piston 203 and the actuator shaft 204 are pushed back in the actuator in the other direction through the orifice 205b for preventing the vacuum state inside the actuator 2, ).

The inside of the actuator 2 is maintained at a constant pressure by the orifice 205b and the discharge hole 206 so that the force applied to the snubber 3 to be described below can be kept constant while the airplane door is opened and closed have.

The actuator shaft 204 is pushed by the pressure applied to the piston 203 to drive the snubber shaft 301 to be described below.

A snubber (3) is provided on one side of the actuator (2). The snubber 3 forms an oil chamber 304 therein, and the oil chamber is filled with oil.

A snubber shaft 301 connected to the actuator shaft 204 in the snug 3 and operated in accordance with the reciprocating movement of the actuator shaft 204 is connected to the snubber shaft 301, And the installed snubbers piston 302 is provided.

The actuator shaft 204 is pushed in one direction to drive the snubber piston 302 and the snubber shaft 301 in one direction.

The snubbers piston (302) includes a seal (303). The seal 303 serves to prevent leakage of the oil to the outside of the oil chamber 304.

 A bypass valve 306 communicating with the oil chamber 304 through the oil passage 305 is provided.

5, the bypass valve 306 is provided with a plunger 306a for regulating the amount of oil flow while rotating and reciprocating along the inner space, and an oil discharge passage 306b for discharging the oil is formed, The damping force of the snubber 3 can be controlled by adjusting the distance between the plunger 306a and the oil discharge passage 306b.

When the bypass valve 306 is opened, that is, when the distance between the plunger 306a and the oil discharge passage 306b is wide, the damping force hardly occurs and the bypass valve is closed, When the distance between the plunger 306a and the oil discharge passage 306b is narrow, a high damping force is generated.

The bypass valve 306 may selectively change the gap to meet damping requirements.

Since the volume of the snubber 3 is different, a separate reservoir 307 may be provided to store extra oil.

Described below is the operation of the emergency situation power assisting device having the above configuration,

Emergency situation The power assist device basically serves to open the aircraft door, and in an emergency situation, it is connected inside the door of the aircraft, so that the aircraft door is not closed.

Nitrogen gas is stored in the metal bottle 101 at a pressure of 3000 psi. The spool 1063 provided in the bottle assembly 1 is pulled out to release the rupturing needle 1061 in a compressed state. The rupture needle 1061 breaks the rupture disk 105 shielding the gas discharge port of the metal bottle 101 and the gas flows into the discharge block 106.

The inside of the discharge block 106 is divided into a rupturing portion 106a, a regulator portion 106b, and a time delay portion 106c.

When the gas flows into the regulator portion 106b and passes through the gap between the poppet 1065 and the valve 1067, the diaphragm 1069, which is kept in equilibrium by the second spring 1066 and the third spring 1068, ) Is pushed by the pressure of the gas.

The diaphragm 1069 is pushed and the poppet 1065 connected to the diaphragm 1069 is pushed in the same direction to narrow the gap and to lower the pressure of the introduced gas.

When the pressure of the gas is lowered, the diaphragm 1069 returns to its original state, and the gap is enlarged to keep the pressure of the gas constant.

A spring controller 1070 is provided to change the position of the diaphragm 1069. The pressure of the gas can be controlled by selectively adjusting the gap.

The gas of a certain pressure is introduced into the time delay portion 106c and the piston of the time delay portion 106c is pushed by the pressure of the gas to open the second flow path 1071 to the outlet 1074 ≪ / RTI >

The time delay unit 106c delays the time at which the actual aircraft door is opened, that is, the flow time of the gas, by about 0.5 to 1 second after the person grasps and manipulates the aircraft door handle by hand during the emergency situation, It can provide free time to be able to.

The gas is supplied to the actuator 2 through the tube 4 communicated with the outlet 1074 of the time delay portion 106c. When the gas is supplied to the actuator 2, the piston 203 and the actuator shaft 204 in the actuator 2 are pressed by the pressure of the gas, and the piston 203 and the actuator shaft 204, The shaft 301 is driven at the same time to generate a damping force while the aircraft door is opened.

The bypass valve 306 can selectively control the damping force applied to the aircraft door by adjusting the distance between the plunger 306a and the oil discharge passage 306b.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, All changes or modifications that come within the scope of the equivalent concept are to be construed as being included within the scope of the present invention.

1. Bottle assembly 4. Tube
101. Metal bottle 102. Suction valve
103. Suction block 104. Pressure gauge
105. Rupture disk 106. Discharge block
106a. The rupturing portion 106b. Regulator portion
106c. Time Delay Section 1061. Burst
1062. First spring 1063. Spool
1064. First Euro 1065. Poppet
1066. Second spring 1067. Valve
1068. Third spring 1069. Diaphragm
1070. Spring controller 1071. Second flow path
1072. Piston shaft 1073. Fourth spring
2. Actuator 201. Inlet
202. Third flow path 203. Piston
204. Actuator shaft 205a. cover
205b. Orifice 206. Discharge hole
3. Snovel 301. Snug Shaft
302. Snooper Piston 303. Seal
304. Oil chamber 305. Oil channel
306. Bypass valve 306a. plunger
306b. Oil discharge Euro 307. Storage

Claims (6)

1. An emergency power assist device for opening an aircraft door in an emergency situation and controlling the damping force of the aircraft door,
A metal bottle for storing gas in a cylindrical inner space;
A suction block provided at one side of the metal bottle and supplying gas to the metal bottle through a suction valve formed therein;
A pressure gauge provided at one side of the suction block for measuring a pressure of the gas;
A rupture disk provided on the other side of the metal bottle to close the discharge port of the gas and to open the discharge port while being ruptured by an external impact;
A discharge block provided at one side of the rupture disk for discharging the gas from the metal bottle by rupturing the rupture disk formed inside the rupture disk;
An actuator provided at one side of the discharge block and having an inserted piston installed to reciprocate along an inner space and an actuator shaft extended to the piston;
And a bypass valve that is connected to the actuator shaft and forms a bypass passage for flowing the inner oil and a snubber shaft that operates in accordance with the reciprocating motion of the actuator shaft, Nuver;
In the discharge block,
A rupture part forming a first space in the first space and receiving the rupture needle connected to the first spring in a compressed state in the first space;
A regulator portion communicating with the rupture portion through a first flow path and forming a second space therein and receiving the poppet connected to the second spring in the second space; And
And a time delay part communicating with the regulator part through a second flow path and forming a third space therein and receiving a piston shaft connected to the fourth spring in the third space,
The time-
And the fourth spring is compressed due to the pressure of the gas to selectively open the second flow path while the piston shaft flows. The method according to claim 1,
The rupturing portion
Further comprising: a spool for supporting the rupture needle to maintain a compressed state of the rupture needle. The method according to claim 1,
The regulator section includes:
A valve provided at one side of the poppet to form a gap between the valve and the poppet to allow the gas to flow;
The second spring being connected to a third spring disposed in the second space corresponding to the opposite side of the second spring, the diaphragm being extended in the poppet and being maintained in equilibrium by the second spring and the third spring, ;
And a spring controller provided at one side of the third spring for adjusting the gap by changing a position of the diaphragm in a balanced state. The method according to claim 1,
Wherein an exhaust hole is formed in the actuator and selectively opened according to a reciprocating motion of the piston to discharge gas to the outside.
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