FOLDING MECHANISM OF HELICOPTER TRANSMITTER ANTENNA SHAFT PORTION

• Main Authors: KATSUMATA RYUHEI, FURUKAWA RIKI, OSAWA MAMORU, ITO TAKESHI, AKIYAMA MAKOTO, TOMIZAKI DAISUKE
• Format: Patent
• Language: English; Japanese
• Published: 13.10.2023
• Subjects: AEROPLANES; AIRCRAFT; ANTENNAS, i.e. RADIO AERIALS; AVIATION; BASIC ELECTRIC ELEMENTS; COSMONAUTICS; ELECTRICITY; HELICOPTERS; PERFORMING OPERATIONS; TRANSPORTING

To provide a folding mechanism of a helicopter transmitter antenna shaft portion with consideration of ease of maintenance and replacement work to make it possible to land safely in an emergency in a transmitter antenna arranged vertically below the lower surface of a helicopter fuselage.SOLUTION: An antenna lifting device 100 includes a transmitter 10 attached on the undersurface of a fuselage, a lifting device 20 provided on the lower part of the transmitter 10, an antenna shaft 40 one end of which is mounted on the lifting device 20 in a swingable manner, and an antenna 50 provided on the other end of the antenna shaft 40. The antenna shaft 40 is provided with a folding mechanism 30 that is arranged on the antenna shaft 40 in a position located higher than the position of a skid of a helicopter when the antenna is deployed vertically downward and bends when a predetermined load is applied. The folding mechanism 30 is for gripping both ends of a plate-shaped fuse plate 31 that breaks when a predetermined load is applied.SELECTED DRAWING: Figure 1 【課題】ヘリコプターの機体下面の鉛直下方に配置される送信機アンテナにおいて、緊急時に安全に着陸できるように、また、メンテナンスや交換作業性を考慮したヘリコプター送信機アンテナシャフト部の折れ機構を提供することを目的とする。【解決手段】本発明のアンテナ昇降装置１００は、機体下面に取り付けられる送信機１０と、送信機１０の下部に設けられた昇降装置２０と、昇降装置２０に一端が揺動自在に装着されるアンテナシャフト４０と、アンテナシャフト４０の他端に設けられるアンテナ５０と、から構成され、アンテナシャフト４０には、アンテナが鉛直下方に展開された際の前記ヘリコプターのスキッドの位置よりも上部の位置に配置され所定の荷重が加わると折れ曲がる折れ機構３０が設けられ、折れ機構３０は、所定の荷重が加わると破断する板状のヒューズプレート３１の両端を把持する機構である。【選択図】 図１