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EP-4737312-A1 - A CUTTING MECHANISM

EP4737312A1EP 4737312 A1EP4737312 A1EP 4737312A1EP-4737312-A1

Abstract

This invention relates to a body (2) which is an aircraft, at least one blade (3) located on the body (2), which allows the air flow to be controlled for moving the body (2), at least one control rod (4) in the body (2), which allows the user to generate a cyclic motion input, thereby controlling the movement of the blade (3), at least one cutter (5) located on the body (2), which cuts a cable (K) in contact with the body (2) during movement of the body (2), preventing damage to the body (2) and/or the blades (3), at least one first apparatus (6) located on the body (2) and including a cutter (5), which guides the cable (K) towards the cutter (5), at least one second apparatus (7) located on the first apparatus (6) so as to almost completely surround the first apparatus (6), extending outwardly from the body (2) so as to guide the cable (K) to the first apparatus (6) for cutting the cable (K), thereby allowing the cable (K) to be cut by the cutter (5).

Inventors

  • SATIR, Seyfi Mert

Assignees

  • Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi

Dates

Publication Date
20260506
Application Date
20250624

Claims (10)

  1. A cutting mechanism (1) comprising a body (2) which is an aircraft, at least one blade (3) located on the body (2), which allows the air flow to be controlled to move the body (2), at least one control rod (4) in the body (2), which allows the user to generate a cyclic motion input, thereby controlling the movement of the blade (3), at least one cutter (5) located on the body (2), which cuts a cable (K) in contact with the body (2) during movement of the body (2), preventing damage to the body (2) and/or the blades (3), at least one first apparatus (6) located on the body (2) and including a cutter (5), which guides the cable (K) towards the cutter (5), at least one second apparatus (7) located on the first apparatus (6) so as to almost completely surround the first apparatus (6), extending outward from the body (2) so as to guide the cable (K) into the first apparatus (6) for cutting the cable (K), thereby allowing the cable (K) to be cut by the cutter (5) characterized by at least one movement assembly (8) for moving the second apparatus (7) on the first apparatus (6), the second apparatus (7), which moves simultaneously with the control rod (4) when the control rod (4) is triggered by the user, thereby enabling the field of action of the cutter (5) to be changed according to the blade (3) angle predetermined by the user.
  2. A cutting mechanism (1) according to claim 1, characterized by a closed position (I) in which the second apparatus (7) is fixedly located on the first apparatus (6) and at least partially within the body (2), an open position (II) in which the second apparatus (7) extends out of the body (2) by triggering the cutter (5) to cut the cable (K) in contact with the body (2), depending on the angle of the blade (3), the second apparatus (7), which is moved from the closed position (I) to the open position (II) by means of the movement assembly (8) by a user triggering the control rod (4), guides the cable (K) to the cutter (5) and allows the cable (K) to be cut by the cutter (5).
  3. A cutting mechanism (1) according to any one of the preceding claims, characterized by at least one first rod (9) located on the body (2), which moves the blades (3) by the user triggering the control rod (4), at least one second rod (801) having a movement assembly (8), which moves along the direction in which it extends when triggered by the first rod (9), thereby allowing movement of the second apparatus (7).
  4. A cutting mechanism (1) according to claim 3, characterized by at least one intermediate element (802) having the movement assembly (8) connected at one end to the second rod (801), which converts the linear motion transmitted by the second rod (801) into cyclic motion.
  5. A cutting mechanism (1) according to claim 4, characterized by at least one actuator (10) having the movement assembly (8), which triggers the movement of the second apparatus (7), at least one connecting element (803) connected at one end to the intermediate element (802) and at the other end to the actuator (10), which allows the actuator (10) to be operated by cyclic movement transmitted from the intermediate element (802).
  6. A cutting mechanism (1) according to claim 5, characterized by at least one transmission element (804) which triggers the actuator (10) and allows movement of the second apparatus (7).
  7. A cutting mechanism (1) according to claim 6, characterized by at least one rod (11) connected at one end to the transmission element (804) and at the other end to the second apparatus (7), allowing the second apparatus (7) to move linearly on the first apparatus (6).
  8. A cutting mechanism (1) according to any one of the preceding claims, characterized by at least one recess (12) allowing the second apparatus (7) to slide over the first apparatus (6), allowing the second apparatus (7) to be placed on the first apparatus (6).
  9. A cutting mechanism (1) according to any one of the preceding claims, characterized by at least one stopper (13) to ensure that the second apparatus (7) remains stationary when it reaches the position predetermined by the user on the first apparatus (6).
  10. A cutting mechanism (1) according to any one of the preceding claims, characterized by the body (2) being a helicopter.

Description

The present invention relates to a cable cutter mechanism with an adjustable range of action in aircraft. A cable cutter in helicopters is a safety device designed to be used in emergency situations. It is activated when obstacles such as electrical wires or cables are encountered that could pose a danger to the helicopter's rotors or other critical parts. If the helicopter becomes entangled in a cable, the device quickly activates to safely cut off the threat without damaging the rotor. It usually works with a hydraulic or mechanical system. The cable cutter maintains the helicopter's maneuverability by cutting the cables quickly and effectively. It is important from a safety point of view for pilots and flight crews, as the presence of a cable cutter increases the chances of the helicopter landing safely. These devices play a critical role in improving the safety of helicopters and preventing potential accidents. In the UK patent document numbered GB2514090, which is included in the state of the art, the cable cutter mechanism in aircraft is mentioned. The document describes a cable cutter that is mounted on the aircraft and also functions as an antenna. The device consists of an electrically conductive main body and an auxiliary part connected to this body but electrically isolated. The main body and the auxiliary part are designed to form a VHF/UHF dipole communication antenna. In addition, the ends of a coaxial antenna connector are connected to the main body and the auxiliary part. The device also includes blades for cable cutting. This device has both a cable cutting function and acts as an antenna to provide communication on board the aircraft. By means of a cutting mechanism developed with this invention, the field of action of the cutter can be changed to provide a cutting mechanism that can be adjusted depending on the position of the cable. Another object of the present invention is to provide a cable cutter that can be adjusted depending on the change of the pal angle. The cutting mechanism defined in the first claim and the claims dependent thereon, which are realized in order to achieve the object of the invention, the body, which is the main structure of the aircraft, has at least one blade that directs the air flow to ensure the movement of the body. This blade plays a critical role in guiding and moving the airframe. The user controls the movement of the blade through a control rod located inside the body. This control rod allows the user to change the position of the blade by inputting cyclic motion. A cutter on the body protects both the body and the blade by cutting a cable (K) that comes into contact with the body during movement. This cutter increases safety by preventing damage to the cable in the event of a potential hazard. In the operation of the cutter mechanism, there is a first apparatus for guiding the cable into the cutter. This first apparatus helps to guide the cable (K) correctly while housing the cutter. Surrounding and connected to the first apparatus is a second apparatus designed to allow the cable (K) to be cut. The second apparatus forms the structure necessary for the cable to be guided and reach the cutter. This mechanism aims to protect the safety of both the vehicle and the users by ensuring that the cable is cut safely in case of any problems during the movement of the aircraft. The inventive cutting mechanism comprises a second apparatus as a structure moving on the first apparatus, and at least one movement mechanism is used to provide this movement. This movement mechanism works by sliding the second apparatus along a certain path on the first apparatus. When the user triggers the control rod, this movement occurs almost simultaneously. The movement of the control rod provides the signal to change the position of the second apparatus. Thus, the area of influence of the cutter automatically changes according to the pal angle predetermined by the user. This makes the effect of the cutter more effective and ensures that the cable (K) is cut accurately during the movement of the aircraft. This mechanism makes it possible to integrate user input into the cutter mechanism. The user-specified pal angle determines when and how the cutter will act, increasing safety and improving system operation. Thus, a dynamic control is provided to minimize the hazards that may occur while the aircraft is in motion. In one embodiment of the invention, the cutting mechanism comprises the second apparatus in a closed position (I), which is at least partially contained within the housing, while the second apparatus is fixedly disposed on the first apparatus. In this position, the second apparatus is immobile and does not perform its cutting function. However, depending on the pal angle, the second apparatus is moved to enable the cutter to cut the cable (K) in contact with the housing. When the user triggers the control rod, the actuator is activated. Under the action of the actuator