A lock system

The lock system uses an axle, rod, and shaft mechanisms with geared slots to ensure the canopy remains locked on the cockpit, addressing the issue of insecure canopy closure in aircraft.

WO2025144269A1PCT designated stage Publication Date: 2025-07-03TUSAS TURK HAVACILIK VE UZAY SANAYII ANONIM SIRKETI
View PDF 5 Cites 0 Cited by

Patent Information

Application Number
PCT/TR2024/051476
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2025-07-03

AI Technical Summary

Technical Problem

Existing aircraft canopy lock systems fail to securely maintain the canopy in a locked position during flight, necessitating additional load-bearing mechanisms when the primary actuator is inadequate.

Method used

A lock system comprising an axle, rod, shaft, and ring mechanisms with geared outer walls and slots, allowing for a secure locking mechanism triggered by pilot or autonomous commands, ensuring the canopy remains fixed on the cockpit.

Benefits of technology

The system effectively locks the canopy to the cockpit, providing secure and reliable closure even under conditions where the primary actuator is insufficient, enhancing safety during flight.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure TR2024051476_03072025_PF_FP_ABST
    Figure TR2024051476_03072025_PF_FP_ABST
Patent Text Reader

Abstract

The present invention relates to a cockpit (2) that is located in the aircraft, a canopy (3) that is positioned on the cockpit (2) in a way that can be opened and closed, an axle (4) that is located on the cockpit (2) and moved by the pilot's trigger or autonomous commands, a rod (5) that extends along the space inside the axle (4) on the cockpit (2), at least one shaft (6) that is connected to the rod (5) and transmits movement when triggered, a first ring (7) that is located on the rod (5) and has an outer wall in the form of a recessed protrusion, a second ring (8) that is located on the axle (4) and has an outer wall in the form of a recessed protrusion, a first slot (9) that is in line with the first ring (7) and is located on the inner wall of the axle (4) and into which the first ring (7) may be placed, a second slot (10) that is in line with the recessed form of the second ring (8) and is located on the shaft (6) and into which the second ring (8) is placed when the axle (4) is triggered towards the shaft (6), and at least one lock mechanism (11) that is triggered by the shaft (6) and ensures that the canopy (3) is held in a fixed position.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] A LOCK SYSTEM

[0002] The present invention relates to lock systems that ensure that canopies on aircraft are locked and remain in a locked position on the body.

[0003] Canopies on aircraft must remain in a closed and locked position in order to prevent harm to the pilot during flight. The lock and actuation systems used in canopies are provided by sliding and opening and / or closing on the cockpit. The canopy, which slides to the rear, can carry the load of the canopy with the canopy actuator due to the low force in that direction in aircraft. In cases where the actuator is not suitable for carrying the canopy load, a secondary main load-bearing lock mechanism must be used.

[0004] In the American patent document numbered US2970793A in the state of the art, an improved aircraft with a new method and tool for forcibly removing the canopy or similar component of an aircraft in the event of an emergency escape is mentioned. In said document, by means of an arm triggered by the pilot, the shafts and joint connections on the mechanism move and release the lock arm. Thus, the canopy can be opened on the cockpit.

[0005] In the American patent document numbered US5137232A in the state of the art, a canopy or panel locking device is mentioned. The canopy comprises a locking system to lock it when closed. The locking system comprises a pair of hooks that can rotate in the forward and backward directions, a frame, a pair of shooting bolts that work together with complementary parts that are movably connected to the body.

[0006] By means of a lock system developed with the present invention, canopies on aircraft are securely brought to the lock position.

[0007] Another aim of the present invention is to ensure that the canopy remains in the lock position when it closed.

[0008] Another aim of the present invention is to ensure that the canopies on aircraft are easily brought to the lock position. The lock system defined in the first claim and the claims dependent on this claim, which is realised to achieve the aim of the invention, comprises a lock mechanism that allows the cockpit and the canopy to be connected to each other on the aircraft.

[0009] There are at least one axle triggered by the pilot or triggered autonomously, a rod located within the axle and moving with the axle, a shaft triggered by the rod, a first ring with a geared outer wall on the rod, a second ring with a geared outer wall on the axle, a first slot that is located on the axle and is form-compatible with the first ring and in which the first ring is placed, a second slot that is located on the shaft and is form-compatible with the second ring, and a locking mechanism that is triggered by the second ring and the second slot coming into contact with each other as the axle moves towards the shaft and the movement of the rod is transferred to the shaft, thus locking the canopy and the cockpit together.

[0010] The lock system which is the subject of the invention comprises a first state (I) in which the first ring is triggered and located in the first slot and the shaft cannot be moved. There is a second state (II) in which the pilot moves the shaft linearly on the axis along which it extends, a part of the first ring comes out of the first slot and the second ring enters the second slot and activates the shaft. In the second state (II), the lock mechanism is activated by the shaft, ensuring that the canopy remains fixed and locked on the cockpit.

[0011] In one embodiment of the invention, the lock system comprises an arm on the shaft that the pilot triggers and can move the shaft. The arm extends outward from the housing on the shaft. A cover is located on the shaft, which is removably mounted to the housing and surrounds the rod.

[0012] In one embodiment of the invention, the lock system comprises a cylinder that is located on the outer shell of the rod, which allows the rod surrounded by the axle to move. A part of the cylinder is located in the housing and a part is located in the cover. By contacting the inner wall of the cover, the cylinder pushes it to move with itself and enables the lock system to be brought from the first state (I) to the second state (II).

[0013] In one embodiment of the invention, the lock system comprises a stopper that stops the movement of the second ring in the second slot. A spring that is located in the axle enables the rod to be brought from the second state (II) to the first state (I). In one embodiment of the invention, the lock system comprises a bush that surrounds the cylinder, is located in the axle, and supports the movement of the cylinder.

[0014] In one embodiment of the invention, the lock system comprises a bar connected to the lock mechanism. In the second state (II), the locking mechanism triggered by the shaft moves and enables the bar to be triggered. The bar enters a hole on the canopy and allows the canopy to come to the lock position on the cockpit.

[0015] In one embodiment of the invention, the lock system comprises at least two bars that are located opposite each other. The movement harmony between the bars is provided by torque tubes. The torque tubes are located between the lock mechanism and the bars.

[0016] In one embodiment of the invention, the lock system comprises an axle that moves from the first position (I) to the second position (II) by being triggered by the pilot moving the arm. The axle is moved linearly towards the shaft. While the axle moves towards the shaft, the second ring enters the second slot. In the meantime, the stopper stops the axle. The rod slides in the opposite direction of the shaft by the thickness of the stopper and allows the first ring to come out of the first slot in the second position (II). In the meantime, the spring is compressed by the cylinder. In the second position (II), the pilot turns the arm around the axis to which the axle extends. In the meantime, the movement is transferred to the shaft by means of the second ring and the second slot, and linear movement is provided in the axis to which the shaft extends. Thus, it can trigger the lock mechanism. The lock mechanism allows the bars to enter the hole and the canopy to come to the lock position on the cockpit by transmitting the movement of the torque tubes.

[0017] In one embodiment of the invention, the lock system comprises a first ring and a second ring with a star-shaped spline gear structure. The first slot and the second slot have a star-shaped spline gear structure in a form compatible with the first ring and the second ring.

[0018] In one embodiment of the invention, the lock system comprises a lock mechanism with a six-bar mechanism. Thus, the bars can move on an axis different from the axis in which the shaft moves linearly. The lock system realised to achieve the aim of the present invention is shown in the attached figures, and of these figures;

[0019] Figure 1 shows the perspective view of the lock system and canopy.

[0020] Figure 2 shows the perspective view of the lock system.

[0021] Figure 3 shows the sectional view of the lock system in the first state (I).

[0022] Figure 4 shows the sectional view of the lock system in the second state (II).

[0023] Figure 5 shows the front view of the canopy, lock mechanism, bar and hole in the first state (I).

[0024] Figure 6 shows the front view of the canopy, lock mechanism and bar in the second state (II).

[0025] The parts in the figures are numbered one by one and the equivalents of these numbers are given below.

[0026] 1 . Lock system

[0027] 2. Cockpit

[0028] 3. Canopy

[0029] 4. Axle

[0030] 401 .Housing

[0031] 402. Cover

[0032] 5. Rod

[0033] 501 .Cylinder

[0034] 6. Shaft

[0035] 7. First ring

[0036] 8. Second ring

[0037] 9. First slot

[0038] 10. Second slot

[0039] 11 . Lock mechanism

[0040] 12. Arm

[0041] 13. Stopper 14. Spring

[0042] 15. Bar

[0043] (I) First state

[0044] (II) Second state

[0045] (B) Bush

[0046] (D) Hole

[0047] (T) Torque tube

[0048] The lock system (1 ) comprises a cockpit (2) that is located in the aircraft, a canopy

[0049] (3) that is positioned on the cockpit (2) in a way that can be opened and closed, an axle (4) that is located on the cockpit (2) and moved by the pilot's trigger or autonomous commands, a rod (5) that extends along the space inside the axle (4) on the cockpit (2) and transmits movement by the triggering of the axle (4), at least one shaft (6) that is connected to the rod (5) and transmits its movement by being triggered by the rod (5), a first ring (7) that is located on the rod (5) and has an outer wall in the form of a recessed protrusion, a second ring (8) that is located on the axle

[0050] (4) and has an outer wall in the form of a recessed protrusion, a first slot (9) that is in line with the first ring (7) and is located on the inner wall of the axle (4) and into which the first ring (7) is placed when the rod (5) is triggered, a second slot (10) that is in line with the recessed form of the second ring (8) and is located on the shaft (6) and into which the second ring (8) is placed when the axle (4) is triggered towards the shaft (6), and at least one lock mechanism (11 ) that is triggered by the shaft (6) and ensures that the canopy (3) is held in a fixed position.

[0051] The lock system which is the subject of the invention (1 ) comprises a first state (I) in which the first ring (7) almost completely touches the inner wall of the first slot (9) and the shaft (6) remains fixed, a second state (II) in which the first ring (7) almost partially protrudes from the first slot (9) by moving the axle (4) by the pilot in the direction it extends and in which the second ring (8) touches the inner wall of the second slot (10) and moves the shaft (6), and a lock mechanism (11 ) that is triggered by the shaft (6) in the second position (II), thereby allows the canopy (3) to be placed on the cockpit (2) and restricts its movement. There is a lock mechanism (11 ) on the cockpit (2) in the aircraft that ensures the canopy (3) is locked securely and safely. In the lock mechanism (11 ), the axle (4) is activated by the pilot or autonomously. There is a rod (5) inside the axle (4) and this rod (5) triggers the shaft (6) with the movement it receives from the axle (4). There is a recessed first ring (7) on the rod (5) and a first slot (9) that is on the axle (4) and is opposite the second ring (8). There is a recessed second ring (8) on the axle (4) and a second slot (10) that is on the shaft (6) and is opposite the second ring (8). The shaft (6) triggers the lock mechanism (11 ).

[0052] When the lock system (1 ) is in the first position (II), the first ring (7) is inside the first slot (9) in a way that it touches the inner walls of the first slot (9). In the first state (I), since the rod (5) and axle (4) do not touch the shaft (6), the shaft (6) cannot move. Therefore, in the first state (I), the lock mechanism (11 ) cannot move either. The lock system (1 ) is placed in the second state (II) by the axle (4) moving towards the shaft (6) and the second ring (8) is placed in the second slot (10) in a way that their surfaces touch. Since the axle (4) and the shaft (6) are in contact, the movement of the axle (4) can be transferred to the shaft (6) in the second state (II). Thus, the triggered shaft (6) also ensures the movement of the lock mechanism (11 ). In this way, the canopy (3) is securely locked on the cockpit (2).

[0053] In an embodiment of the invention, the lock system (1 ) comprises at least one arm (12) that is located on the axle (4) and enables the pilot to move the axle (4); a housing (401 ) which forms the axle (4), through which the rod (5) passes, and in which the arm (12) is positioned; at least one cover (402) which is attached to the housing (401 ) in a way that surrounds the rod (5) in the direction that the housing (401 ) extends, is positioned opposite the second housing (10), has a second ring (8) on it and forms the axle (4). The pilot can activate the axle (4) via the arm (12). The arm (12) is on the housing (401 ). The cover (402) is located next to the housing (401 ). The cover (402) surrounds the rod (5). The housing (401 ) and the cover (402) form the axle (4). In this way, the pilot can easily move the lock system (1 ) from the first position (I) to the second position (II) and activate the lock mechanism (11 ).

[0054] In one embodiment of the invention, the lock system (1 ) comprises at least one cylinder (501) that is located inside the axle (4), and on the outer wall of the rod (5) in a way that it will contact the rod (5) and move the rod (5), a cylinder (501 ) that is located partly inside the housing (401 ) and partly inside the cover (402), and the outer wall of which is in contact with the inner wall of the cover (402), enabling the axle (4) to move from the first state (I) to the second state (II). The cylinder (501 ) that is located on the rod (5) contacts the cover (402) and enables the axle (4) to move the rod (5) from the first state (I) to the second state (II). In this way, the lock system (1 ) can be easily moved from the first state (I) to the second state (II).

[0055] In one embodiment of the invention, the lock system (1 ) comprises at least one stopper (13) that is located in the second slot (10), and limits the movement of the second ring (8) in the second slot (10) while the shaft (6) and the axle (4) located on it are brought from the first state (I) to the second state (II), and at least one spring (14) that is located in the housing (401 ) between the first slot (9) and the cylinder (501 ), and allows the rod (5) to be moved from the second state (II) to the first state (I). The stopper (13) that is located in the second slot (10) ensures that the movement of the axle (4) is limited while it is brought to the second state (II). In the meantime, the cylinder (501 ) compresses the spring (14) a little. In this way, the lock system (1 ) is brought from the second state (II) to the first state (I).

[0056] In one embodiment of the invention, the lock system (1 ) comprises a bush (B) that surrounds the cylinder (501 ), is located between the cylinder (501 ) and the axle (4), and supports the movement of the cylinder (501 ) within the axle (4). In this way, the movement of the cylinder (501 ) can be supported within the axle (4).

[0057] In one embodiment of the invention, the lock system (1 ) comprises multiple bars (15) to which the lock mechanism (11 ) is connected, and which are triggered by the pilot activating the axle (4) and shaft (6) in the second position (II) and at least one hole (D) that is located within the canopy (3) and enables the canopy (3) to be connected to the cockpit (2) by placing it inside the bar (15). The lock mechanism (11 ) triggers the bar that is located on it. The lock mechanism (11 ) is activated in the second position (II) and the bar (15) enters the hole (D) on the canopy (3) and locks the canopy (3) on the cockpit (2).

[0058] In one embodiment of the invention, the lock system (1 ) comprises bars (15) that are located opposite each other on the cockpit (2), and at least one torque tube (T) that is located between the lock mechanism (11) and the bar (15), is triggered by the lock mechanism (11 ), and provides movement harmony between the bars (15). A torque tube (T) is located between the lock mechanism (11 ) and the bars (15) that are located opposite each other. In this way, the lock mechanism (11 ) can move the bars (15).

[0059] In one embodiment of the invention, the lock system (1) comprises

[0060] - The axle (4) is brought from the first state (I) to the second state (II) by the pilot holding the handle (12) and moving the axle (4) linearly towards the shaft (6) in the direction in which the axle (4) extends,

[0061] - The stopper (13) which limits the linear movement of the axle (4) in the direction it extends, with the contact of the second ring (8) entering the second slot (10) while the axle (4) is being moved towards the shaft (6),

[0062] - The rod (5) that moves in the direction opposite to the shaft (6) as much as the stopper (13) section during the movement of the axle (4) towards the shaft (6),

[0063] - The spring (14) that is compressed by the cylinder (501 ) when changing from the first state (I) to the second state (II), the first ring (7) protruding from the first slot (9) as much as the stopper (13) section,

[0064] - The lock mechanism (11 ) that is triggered by the shaft (6) rotating around the direction it extends, by the pilot moving the arm (12) in a way that rotates the axle (4) around the direction it extends when the axle (4) is in the second position (II),

[0065] - The bars (15) that are placed in the hole (D) by making a linear movement in the direction they extend as a result of the lock mechanism (11 ) triggering the torque tubes (T), and

[0066] - The canopy (3) with restricted movement, attached to cockpit (2) by means of bars (15) and holes (D).

[0067] In this way, the canopy (3) is locked on the cockpit (2).

[0068] In one embodiment of the invention, the lock system (1) comprises the first ring (7) and the second ring (8) which are star-shaped spline gears, and the first slot (9) and the second slot (10) which are star-shaped spline gears in a way that is compatible with the first ring (7) and the second ring (8), thus transferring the movement of the axle (4) to the shaft (6). In this way, the movement of the axle (4) and the rod (5) can be effectively transferred to the shaft (6). In one embodiment of the invention, the lock system (1 ) comprises a lock mechanism (11 ) which comprises a six-bar mechanism and thus enables the movement of the bar (15) to be allowed or to be limited in a way that it makes an angle predetermined by the manufacturer to the direction to which the shaft (6) extends. The pilot first moves the arm (12). The arm (12) brings the axle (4) from the first state (I) to the second state (II). While the axle (4) moves linearly in the direction it extends to the shaft (6), the second ring (8) enters the second slot (10) and the stopper (13) stops the axle (4). The rod (5) slides in the opposite direction of the shaft (6) as much as the section of the stopper (13) and in the second state (II) allows the first ring (7) to come out of the first slot (9) a little, thus allowing the cylinder (501 ) to compress the spring (14). In the second state (II), the pilot rotates the arm (12) around the axis to which the axle (4) extends. Thus, the movement is transferred to the shaft (6) by the contact of the second ring (8) and the second slot (10), and the linear movement of the shaft (6) is provided in the direction it extends. Thus, it can trigger the lock mechanism (11 ). The lock mechanism (11 ) is triggered by means of the torque tubes (T) and allows the bars (15) to enter the hole (D) and the canopy (3) to come to the lock position on the cockpit (2).

Claims

CLAIMS1- A lock system (1 ) comprising a cockpit (2) that is located in the aircraft, a canopy (3) that is positioned on the cockpit (2) in a way that can be opened and closed, an axle (4) that is located on the cockpit (2) and moved by the pilot's trigger or autonomous commands, a rod (5) that extends along the space inside the axle (4) on the cockpit (2) and transmits movement by the triggering of the axle (4), at least one shaft (6) that is connected to the rod (5) and transmits its movement by being triggered by the rod (5), a first ring (7) that is located on the rod (5) and has an outer wall in the form of a recessed protrusion, a second ring (8) that is located on the axle (4) and has an outer wall in the form of a recessed protrusion, a first slot (9) that is in line with the first ring (7) and is located on the inner wall of the axle (4) and into which the first ring (7) is placed when the rod (5) is triggered, a second slot (10) that is in line with the recessed form of the second ring (8) and is located on the shaft (6) and into which the second ring (8) is placed when the axle (4) is triggered towards the shaft (6), and at least one lock mechanism (11 ) that is triggered by the shaft (6) and ensures that the canopy (3) is held in a fixed position, characterised by a first state (I) in which the first ring (7) almost completely touches the inner wall of the first slot (9) and the shaft (6) remains fixed, a second state (II) in which the first ring (7) almost partially protrudes from the first slot (9) by moving the axle (4) by the pilot in the direction it extends and in which the second ring (8) touches the inner wall of the second slot (10) and moves the shaft (6), and a lock mechanism (11 ) that is triggered by the shaft (6) in the second position (II), thereby allows the canopy (3) to be placed on the cockpit (2) and restricts its movement .2- A lock system (1 ) according to Claim 1 , characterised by at least one arm (12) that is located on the axle (4) and enables the pilot to move the axle (4); a housing (401 ) which forms the axle (4), through which the rod (5) passes, and in which the arm (12) is positioned; at least one cover (402) which is attached to the housing (401 ) in a way that surrounds the rod (5) in the direction that the housing (401 ) extends, is positioned opposite the second housing (10), has a second ring (8) on it and forms the axle (4).3- A lock system (1) according to Claim 1 or Claim 2, characterised by at least one cylinder (501 ) that is located inside the axle (4), and on the outer wall of the rod (5) in a way that it will contact the rod (5) and move the rod (5), a cylinder (501 ) that is located partly inside the housing (401 ) and partly inside the cover (402), and the outer wall of which is in contact with the inner wall of the cover (402), enabling the axle (4) to move from the first state (I) to the second state (II).4- A lock system (1 ) according to Claim 3, characterised by at least one stopper (13) that is located in the second slot (10), and limits the movement of the second ring (8) in the second slot (10) while the shaft (6) and the axle (4) located on it are brought from the first state (I) to the second state (II), and at least one spring (14) that is located in the housing (401 ) between the first slot (9) and the cylinder (501 ), and allows the rod (5) to be moved from the second state (II) to the first state (I).5- A lock system (1) according to Claim 3 or Claim 4, characterised by a bush (B) that surrounds the cylinder (501 ), is located between the cylinder (501 ) and the axle (4), and supports the movement of the cylinder (501 ) within the axle (4).6- A lock system (1) according to Claim 6, characterised by multiple bars (15) to which the lock mechanism (11 ) is connected, and which are triggered by the pilot activating the axle (4) and shaft (6) in the second position (II) and at least one hole (D) that is located within the canopy (3) and enables the canopy (3) to be connected to the cockpit (2) by placing it inside the bar (15).7- A lock system (1 ) according to any of the previous claims, characterised by bars (15) that are located opposite each other on the cockpit (2), and at least one torque tube (T) that is located between the lock mechanism (11 ) and the bar (15), is triggered by the lock mechanism (11 ), and provides movement harmony between the bars (15).8- A lock system (1 ) according to any of the previous claims, characterised by- the axle (4) is brought from the first state (I) to the second state (II) by the pilot holding the handle (12) and moving the axle (4) linearly towards the shaft (6) in the direction in which the axle (4) extends,- the stopper (13) which limits the linear movement of the axle (4) in the direction it extends, with the contact of the second ring (8) entering the second slot (10) while the axle (4) is being moved towards the shaft (6),- the rod (5) that moves in the direction opposite to the shaft (6) as much as the stopper (13) section during the movement of the axle (4) towards the shaft (6),- the spring (14) that is compressed by the cylinder (501 ) when changing from the first state (I) to the second state (II), the first ring (7) protruding from the first slot (9) as much as the stopper (13) section,- the lock mechanism (11 ) that is triggered by the shaft (6) rotating around the direction it extends, by the pilot moving the arm (12) in a way that rotates the axle (4) around the direction it extends when the axle (4) is in the second position (II),- the bars (15) that are placed in the hole (D) by making a linear movement in the direction they extend as a result of the lock mechanism (11 ) triggering the torque tubes (T), and- the canopy (3) with restricted movement, attached to cockpit (2) by means of bars (15) and holes (D).9- A lock system (1 ) according to any of the previous claims, characterised by the first ring (7) and the second ring (8) which are star-shaped spline gears, and the first slot (9) and the second slot (10) which are star-shaped spline gears in a way that is compatible with the first ring (7) and the second ring (8), thus transferring the movement of the axle (4) to the shaft (6).10-A lock system (1 ) according to any of the claims 6 to 9, characterised by a lock mechanism (11 ) which comprises a six-bar mechanism and thus enables the movement of the bar (15) to be allowed or to be limited in a way that it makes an angle predetermined by the manufacturer to the direction to which the shaft (6) extends.

Citation Information

Patent Citations

  • Aircraft

    US2970793A

  • Canopy or panel locking assembly

    US5137232A

  • Improvements in or relating to cockpit hoods

    GB562808A

  • Improvements in or relating to cockpit hoods

    GB565632A

  • Aircraft canopy lock

    US4375281A