KR102199291B1 - A Helicopter Door Structure for Emergency Escape - Google Patents

Abstract

The present invention relates to a helicopter door structure for an emergency escape, capable of satisfying requirements of an emergency exit requested for the airworthiness certification of an aircraft without causing a great increase in the weight of a helicopter. The helicopter door structure includes: a door for opening and closing an entrance provided in the fuselage of a helicopter; a hinge unit including a first hinge bracket and a second hinge bracket in pairs, wherein the first hinge bracket is provided on one side of the circumference of the entrance and the second hinge bracket is fixed to one side of the circumference of the door, and having holes formed on the first and second hinge brackets, respectively; and a pin unit penetrating the holes of the first and second hinge brackets, and including a pin body elongated as a hollow body, and including a control hole formed on a side of one end part, a plunger having a rod shape while having one end part formed with a small diameter to form a first contraction part, and inserted into the pin body to be slid, and a control ball inserted into the control hole inside the pin body to be exposed to the outside of the pin body or not to be exposed depending on the position of the plunger.

Description

Helicopter Door Structure for Emergency Escape {A Helicopter Door Structure for Emergency Escape}

The present invention relates to a helicopter door structure, and more particularly, to a helicopter door structure for emergency departure capable of opening the helicopter door from the outside in an emergency situation.

Aircraft airworthiness certification requirements stipulate that the door can be opened from inside and outside the cockpit door in case of an emergency in order to allow the pilot of a helicopter to rescue the pilot in an emergency situation such as unconsciousness. In detail, the above design regulations require that the dimensions of the emergency exit are sufficiently large, and the emergency opening means for opening the emergency exit is required to operate with a simple operation under an open load of 250N or less.

Conventionally, in order to satisfy these requirements, a separate emergency exit has been made on the helicopter door. However, the conventional method that has made a separate emergency exit is difficult to open the helicopter door due to the weight of the emergency opening means, the problem of reducing efficiency by increasing the weight of the helicopter, and the difficulty of maintenance due to the complexity of the structure. There was this.

Therefore, it is urgent to develop a helicopter door structure to solve this problem.

1. Korean Laid-Open Patent Publication No. 10-2019-0058481 ("A window having an emergency exit function for a helicopter and a method of removing a transparent element from the window")

The present invention has been conceived to solve the above problems, and an object of the present invention is a helicopter door for emergency exit capable of satisfying the requirements of an emergency exit required for aircraft airworthiness certification without significantly increasing the weight of the helicopter It is in providing structure.

On the other hand, the object of the present invention is not limited to the object mentioned above, and other objects not mentioned will be clearly understood from the following description.

The helicopter door structure for emergency departure of the present invention includes a door for opening and closing the entrance provided in the fuselage of the helicopter; A hinge unit having a pair of first hinge brackets provided on one side of the circumference of the entrance and a second hinge bracket fixed to one side of the circumference of the door, and having holes in each of the first and second hinge brackets; And a pin body having an adjustable hole formed on a side of one end, and a pin body having a rod shape, but having a diameter smaller than the central part by penetrating the holes of the first hinge bracket and the second hinge bracket. A plunger that forms a first contraction part, is inserted into the pin body, and slides, and an adjustment ball that is inserted into the adjustment hole inside the pin body and is exposed or not exposed to the outside of the pin body according to the position of the plunger. It characterized in that it comprises a; pin unit including.

In addition, in the pin body, a first moving hole is formed at one end and a second moving hole is formed at the other end. As the plunger slides inside the pin body, both ends of the pin body are moved to the first moving hole or the second moving hole. The pin body is exposed to the inside and outside of the pin body through the hole, and when the central portion of the plunger is in contact with the outer surface, the control ball protrudes to the outside of the pin body through the control hole to hinge the door to the body, and the control ball When the first contraction part contacts, it is inserted into the pin body so that the door can be separated from the body.

And the plunger, the diameter of the other end is formed smaller than the central portion to form a second contraction portion, the second moving hole is formed to correspond to the diameter of the second contraction portion, the pin unit, inside the pin body Further comprising a pressure spring provided to surround the second contraction portion, when no external force is applied to the plunger, the plunger is positioned by the elasticity of the pressure spring, so that the adjustment ball is moved to the outside of the pin body. It is characterized in that to maintain the protruding state.

In addition, the adjustment hole is characterized in that the diameter is gradually formed larger as it goes from the outside to the inside of the pin body.

In addition, the plunger is characterized in that a central portion of the plunger and a connection portion of the first contraction portion are formed to be tapered.

In addition, the plunger is characterized in that a ring is provided at the other end so that the other end of the plunger is not inserted into the pin body.

In addition, the helicopter door structure includes a strap having one end constrained to the ring, an arm snap button provided at the other end of the strap, and a male snap button provided on the door or the fuselage and detachable from the arm snap button. It characterized in that it further comprises a; fixing unit comprising.

The helicopter door structure for emergency escape of the present invention according to the configuration as described above enables the door of the helicopter to be immediately separated from the outside through a pin unit without providing a separate emergency exit, thereby reducing the weight of the helicopter and maintaining maintenance. There is an effect of facilitating.

In addition, it is economical by fixing the position of the plunger and preventing the plunger from dislodging through the simple structure of the pressure spring and the fixing unit.

In addition, there is an effect that the plunger can be easily operated by the operator through the configuration of the ring.

1 is a side view showing the state of the helicopter.
2 is an assembly view of a hinge unit and a pin unit.
3 is a front view showing a state in which the hinge unit and the pin unit are assembled.
4 is a side cross-sectional view showing a state when the pin unit is in a normal state.
5 is a side cross-sectional view showing a state in which an external force is applied to the pin unit.

Prior to describing the technical idea of the present invention in more detail using the accompanying drawings, terms or words used in the present specification and claims should not be construed as being limited to a conventional or dictionary meaning, and the inventor himself In order to describe the invention in the best way, based on the principle that the concept of terms can be appropriately defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, and thus various alternatives that can be substituted for them at the time of application It should be understood that there may be variations.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings. The accompanying drawings are only an example shown to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

1 is a side view showing the state of the helicopter.

A helicopter door structure for emergency departure according to a preferred embodiment of the present invention includes a door 10 for opening and closing the entrance 21 provided in the fuselage 20 of the helicopter 1, the door 10 and the fuselage 20 ) And a hinge unit (not shown), which is a connection portion, and a pin unit (not shown) that integrally couples the body 20 and the door 10.

FIG. 2 is a diagram illustrating a portion in which the body 20 and the door 10 are connected to each other, that is, the hinge unit and the pin unit are disassembled from each other.

Referring to Figure 2 will be described with respect to the coupling relationship of each component.

As shown in FIG. 2, the hinge bracket 100 is configured by forming a pair of a first hinge bracket 110 and a second hinge bracket 120. The first hinge bracket 110 may be fixed or formed at one side around the entrance of the body, and a hole may be formed through a rhombic cross-section so that a pin unit to be described later can be inserted. However, in the present invention, the cross section of the first hinge bracket 110 is not limited to a rhombus, and the first hinge bracket 110 may have a cross section of various shapes.

The second hinge bracket 120 is fixed or formed on the door 10, unlike the first hinge bracket 110 that is fixed or formed on the body 20, but the door can be combined with the first hinge bracket 110. It is located on one side of 10). When the door 10 is coupled to the fuselage 20 when manufacturing the helicopter, the first hinge bracket 110 and the second hinge bracket 120 may be aligned with each other and then coupled to each other by a pin unit to be described later. .

When the second hinge bracket 120 is described in detail with reference to FIG. 2, a pair of pin fastening portions 121 may be formed to protrude from each other in one direction on one side of the second hinge bracket 120. Holes may be formed in each of the pin fastening portions 121 so that a pin unit can be inserted, and holes formed in each of the pin fastening portions 121 may be coaxial with each other. When the door 10 is coupled to the entrance of the fuselage 20, the first hinge bracket 110 is inserted between the pair of pin fastening portions 121, so that the first hinge bracket 110 and the pair of pins Holes formed in each of the fastening parts 121 are connected and aligned with each other, and the pin unit 200 is inserted into the holes aligned and connected to each other, so that the door 10 may be installed to be rotatable in the body 20.

As shown in Figure 2, the pin unit 200 is inserted into the hole formed in the first hinge bracket 110 and the pair of pin fastening portions 121 described above, the door 10 to the body 20 As a connecting member, a pin body 210, a ring 220, and a strap 230 may be included.

The pin body 210 is a portion directly inserted into the hole of the first hinge bracket 110 and the pair of pin fastening portions 121 aligned with each other. The pin body 210 may be inserted into the hole through one side having a relatively small diameter. Although not shown in FIG. 2, a limiting member limiting the degree to which the pin body 210 is inserted may be protruded on the outer peripheral surface of the other side of the pin body 210. Although not shown in FIG. 2, the fin body 210 has a tubular shape, and an accommodation space formed in the same direction as the direction in which the fin body 210 extends may be formed.

Although not shown in FIG. 2, a plunger coupled to slide along the receiving space of the fin body 210 may be accommodated in the fin body 210. The other end of the plunger may be exposed to the upper side of the pin body 210, and the ring 220 is coupled to the other end of the plunger exposed to the upper side of the pin body 210, so that the user can press the plunger inside the pin body 210. When you want to move, that is, when you want to apply an external force to the pin unit 200, at the same time as the handle role. The other end of the plunger can be prevented from being pushed into the pin body 210.

The strap 230 is a fixing unit that prevents separation of the pin unit 200, the plunger, and the ring 220 coupled to the plunger. The strap 230 is formed of a relatively durable cloth material, painted in a bright color (for example, fluorescent color), and is constrained to the ring 220, so that the position of the pin unit 200 can be more prominent. have. Since the strap 230 is sewn, it is possible to prevent the strap 230 from being separated from the ring 220. In the helicopter door structure according to the present embodiment, after the pin unit 200 is coupled, the actual helicopter is in flight. At this time, if the strap is not fixed, the strap 230 may shake, and furthermore, the pin unit ( When an external force acts on the 200, the coupling of the pin unit 200 may be released and the door 10 may be removed from the body 20. In order to prevent these two phenomena, the strap 230 can be fixed using the female snap button 231 formed at the end of the strap 230 and the male snap button 232 formed on the surface of the door 10, As the strap 230 is fixed, a situation such as the ring 220 and the plunger connected to the ring 220 is separated or the strap 230 is shaken can be prevented.

In this embodiment shown in FIG. 2, the male snap button 232 is formed on the surface of the door 10, but the present invention does not limit the position of the male snap button 232 to the surface of the door 10, If the distance that the arm snap buttons 231 and 231 formed on the strap 230 such as the fuselage 20, the first hinge bracket 110, and the second hinge bracket 120 can reach, the male snap button anywhere on the helicopter The 232 is formed, so that the strap 230 can be fixed. In the above description, it was described that the strap 230 may be formed of a cloth material having relatively strong durability, but the strap 230 may be formed of a material having elasticity of a certain degree or more, such as rubber or silicone, and the strap 230 When) is formed of a material having elasticity of a certain degree or more, the range in which the male snap button 232 can be formed may be improved.

3 is a perspective view showing a state in which the hinge unit and the pin unit are assembled.

As shown in FIG. 3, the pin unit 200 is inserted into the hole of the first hinge bracket aligned with each other and a pair of pin fastening portions 121 to connect the door 10 and the body 20 to each other. In addition, the female snap button 231 is coupled with the male snap button 232 formed on the door 10 to fix the strap 230. The diameter of the pin body 210 corresponds to the diameter of the hole formed in the first hinge bracket and the pair of pin fastening portions 121, so that the pin unit 200 has the first hinge bracket 110 and the second hinge bracket 120 When) are connected to each other, the pin unit 200 can be prevented from shaking inside the hole.

In the pin unit 200 shown in FIGS. 2 and 3, the adjustment ball 214 formed on the outside of the pin body 210 is exposed to the outside, but the pin unit 200 is aligned with the first hinge bracket and When inserted into the hole of a pair of pin fastening portions, the adjustment ball 214 may be in an unexposed state, and an external force and a normal state in which the adjustment ball 214 is exposed to the outside of the pin body 210 are applied. A state in which the adjustment ball 214 is not exposed to the outside of the pin body 210 will be described, respectively.

4 is a side cross-sectional view showing a state when the pin unit is in a normal state.

As shown in FIG. 4, the pin unit 200 may further include a pressure spring 250 and an adjustment ball 214 in addition to the pin body 210, the ring 220, and the plunger 240 described above. .

When the members included in the pin unit 200 are described in more detail with reference to FIG. 4, a first moving hole 211 is formed at one end of the pin body 210, and a second moving hole 212 is formed at the other end. It can be a structure that becomes. That is, the fin body 210 may have a pipe shape formed through in one direction, and an adjustment hole 213 may be formed in an outer portion of the fin body 210. However, the present invention does not limit the fin body 210 to that both the first moving hole 211 and the second moving hole 212 are formed, and there is an embodiment in which the first moving hole 211 is not formed. I can. The adjustment ball 214 may be inserted into the adjustment hole 213 formed in the pin body 210, and the adjustment ball 214 moves only inside the adjustment hole 213 according to the position of the plunger 240, It may or may not be exposed to the outside of 210. The adjustment hole 213 may have a gradually larger diameter from the outside of the pin body 210 to the inside. As the adjustment hole 213 has such a structure, the adjustment ball 214 is It can prevent it from escaping outward.

The above-described limiting member 215 may protrude from the outer surface of the other side of the fin body 210 shown in FIG. 4. The length from the limiting member 215 to the adjustment ball 214 is the same as the length of the first hinge bracket 110 inserted between the pair of pin fastening parts 121 and the pair of pin fastening parts 121 , Can be more than that.

4, the plunger 240 has a first contraction portion 241 formed at one end so as to have a diameter smaller than the diameter of the middle portion, and the other end of the plunger 240 has a diameter greater than the diameter of the center portion. A second contraction portion 242 formed to be small may be formed. The first contraction portion 241 and the center portion of the plunger 240 may be formed as an inclined surface, but the second contraction portion 242 and the center portion of the plunger 240 do not have an inclined surface and a step may be formed. have. In the case of the first contraction part 241. As shown in FIG. 4, when an external force does not act and the first hinge bracket 110 and the second hinge bracket 120 are connected, they may be exposed to the outside through the first moving hole 211. In the case of assembling the door 10, the operator has the first hinge bracket into which the corresponding pin unit 200 is inserted through the first contraction part 241 exposed to the outside through the first moving hole 211. 110) and the second hinge bracket 120 can be easily determined whether or not they are coupled to each other, and to facilitate this process, the color of the end of the first contraction unit 241 is a prominent color. May be painted with or a separate identification tag may be attached.

The second contraction part 242 may be inserted into the second moving hole 212 and exposed to the other side of the pin body 210, and may be connected to the ring 220 as described above. The pressure spring 250 is inserted between the second contraction portion 242 and the inner surface of the other side of the pin body 210, and when the external force acting on the plunger 240 disappears, the plunger 240 may be returned to its original position. When the plunger 240 returns to its original position, the center portion of the plunger 240 having a large diameter pushes the adjustment ball 214 so that the adjustment ball 214 may be exposed to the outside of the pin body 210, through which The pin unit 200 may be fixed while connecting the first hinge bracket 110 and the second hinge bracket 120 to each other.

5 illustrates a state in which an external force is applied to the pin unit so that the pin unit is separated from the first hinge bracket 110 and the second hinge bracket 120.

5, when the user pulls the ring 220 and moves the plunger 240 upward, the first contraction portion 241 moves to the position of the adjustment ball 214, and the adjustment ball 214 A space that can be moved is created. That is, as the plunger 240 moves, the external force acting on the adjustment ball 214 disappears, and the adjustment ball 214 moves to the inside of the pin body 210 while the user moves the pin unit 200 upward. While in contact with the inclined surface of the first contraction portion, it is not exposed to the outside of the pin body 210, so the user releases the coupling of the first hinge bracket 110 and the second hinge bracket 120, and the door 10 Can be easily removed from the body (20).

Conversely, when inserting the pin unit 200 into the hole of the first hinge bracket 110 and the pair of pin fastening portions 121 aligned with each other, the user may insert the ring 220 as shown in FIG. 5. The pin unit 200 may be inserted into the hole in a pulled state, and the ring 220 may be placed in a state in which the pin unit 200 is inserted. In this case, the plunger 240 is returned to the position as shown in FIG. 4 by the pressure spring 250, and the adjustment ball 214 is pushed outward by the center portion of the large diameter of the plunger 240, By fixing the unit 200, the first hinge bracket 110 and the second hinge bracket 120 may be connected to each other.

The technical idea should not be interpreted as limited to the above-described embodiment of the present invention. As well as a variety of application ranges, various modifications can be made at the level of those skilled in the art without departing from the gist of the present invention claimed in the claims. Therefore, these improvements and changes will fall within the scope of protection of the present invention as long as it is apparent to those skilled in the art.

1: helicopter
10: door
20: fuselage
21: entrance
100: hinge bracket
110: first hinge bracket
120: second hinge bracket
121: pin fastening part
200: pin unit
210: pin body
211: first moving hall
212: 2nd moving hall
213: adjustment hole
214: adjustment ball
215: limiting member
220: ring
230: strap
231: arm snap button
232: male snap button
240: plunger
241: first contraction part
242: second contraction part
250: pressure spring

Claims (7)

A door for opening and closing the entrance provided in the fuselage of the helicopter;
A hinge unit having a pair of first hinge brackets provided on one side of the circumference of the entrance and a second hinge bracket fixed to one side of the circumference of the door, and having holes in each of the first and second hinge brackets; And
The first hinge bracket and the second hinge bracket pass through the hole and are formed to be long in a hollow shape, and a pin body with an adjustment hole formed on the side of one end, and a rod-shaped one end having a diameter smaller than the central part. 1 It includes a plunger that forms a contraction and slides inside the pin body, and an adjustment ball that is inserted into the adjustment hole inside the pin body and is not exposed or exposed to the outside of the pin body according to the position of the plunger. Helicopter door structure for emergency departure including; a pin unit.
The method of claim 1,
The pin body,
A first moving hole is formed at one end and a second moving hole is formed at the other end,
The plunger,
As the inside of the pin body slides, both ends of the pin body are exposed inside and outside the pin body through the first moving hole or the second moving hole,
The adjustment ball,
When the central portion of the plunger is in contact with the outer surface, it protrudes to the outside of the pin body through the adjustment hole to hinge the door to the body,
Helicopter door structure for emergency departure, characterized in that when the first contraction part is in contact with the outer surface, it is inserted into the pin body to separate the door from the fuselage.
The method of claim 2,
The plunger,
The diameter of the other end is formed smaller than the central part to form a second contraction part,
The second moving hole is formed to correspond to the diameter of the second contraction part,
The pin unit,
Further comprising a pressure spring provided to surround the second contraction portion inside the pin body,
When no external force is applied to the plunger, the plunger is designated by the elasticity of the pressurizing spring, so that the control ball is protruded outside the pin body. Door structure.
The method of claim 1,
The control hole is a helicopter door structure for emergency departure, characterized in that the diameter is formed gradually larger from the outside to the inside of the pin body.
The method of claim 1,
The plunger,
Helicopter door structure for emergency departure, characterized in that the connecting portion of the first contraction portion and the central portion of the plunger tapered.
The method of claim 2,
The plunger,
Helicopter door structure for emergency departure, characterized in that a ring is provided at the other end so that the other end of the plunger is not inserted into the pin body
The method of claim 6,
The helicopter door structure,
A fixing unit including a strap having one end constrained to the ring, an arm snap button provided at the other end of the strap, and a male snap button provided on the door or the body and detachable from the arm snap button; Helicopter door structure for emergency departure, characterized in that.

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