IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0407942
(2003-04-07)
|
우선권정보 |
IT-0000330 (2002-04-12) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
4 |
초록
▼
There is described an electric connecting unit for a helicopter, having a stator connected rigidly to a fixed part of the helicopter and fitted with first electric contact means; and a movable member rotated about a respective axis by a rotary member of the helicopter, and fitted with second electri
There is described an electric connecting unit for a helicopter, having a stator connected rigidly to a fixed part of the helicopter and fitted with first electric contact means; and a movable member rotated about a respective axis by a rotary member of the helicopter, and fitted with second electric contact means cooperating in sliding manner with the first electric contact means; the movable member having rigid fastening means for connection to the rotary member of the helicopter, so that no bearings are required between the stator and the movable member.
대표청구항
▼
1. An electric connecting unit (2) in a helicopter (1), comprising a stator (15) connected rigidly to a fixed part (11) of said helicopter (1) and having first electric contact means (16); and a movable member (17) rotated about a respective axis (A) by a rotary member (12) of said helicopter (1), a
1. An electric connecting unit (2) in a helicopter (1), comprising a stator (15) connected rigidly to a fixed part (11) of said helicopter (1) and having first electric contact means (16); and a movable member (17) rotated about a respective axis (A) by a rotary member (12) of said helicopter (1), and having second electric contact means (18) cooperating in sliding manner with said first electric contact means (16); characterized in that said movable member (17) comprises rigid fastening means (23, 25, 27) for connection to said rotary member (12) of said helicopter (1).2. A unit as claimed in claim 1, characterized in that said stator (15) and said movable member (17) are mounted coaxially with each other; and in that said movable member (17) is interposed radially between said stator (15) and said rotary member (12).3. A unit as claimed in claim 2, characterized in that said rigid fastening means (23, 25, 27) comprise two bushes (23) wedged tightly between said rotary member (12) and respective opposite end portions (21) of said movable member (17).4. A unit as claimed in claim 3, characterized in that said rigid fastening means (23, 25, 27) comprise a number of bolts (25) for gripping said bushes (23) to the respective said end portions (21) of said movable member (17).5. A unit as claimed in claim 3, characterized in that said end portions (21) of said movable member (17) are bounded towards said rotary member (12) by conical first surfaces (22) tapering towards each other; and in that said bushes (23) are bounded towards said movable member (17) by conical second surfaces (24) of the same shape as said first surfaces (22) and cooperating with the first surfaces (22).6. A unit as claimed in claim 1, wherein said rigid fastening means comprises a mechanical fastening system interposed between said moveable member (17) and said rotary member (12).7. A unit as claimed in claim 6, wherein said mechanical fastening system comprises at least one bushing (23) interposed between said movable member and said rotary member (12).8. A unit as claimed in claim 6, wherein said mechanical fastening system comprises an interlocking member (25) interlocking said movable member (17) and said second electric contact means (18).9. A unit as claimed in claim 1, wherein said rigid fastening means comprises a pair of angled bushes (23) interposed between said movable member and said rotary member (12).10. A unit as claimed in claim 6, further comprising wherein said movable member comprises angled surfaces engaging said angled bushes (23) interposed between said movable member and said rotary member (12).11. A helicopter comprising a fixed part (11), at least one rotary member (12) rotating with respect to said fixed part (11), and an electric connecting unit (2) for connecting said rotary member (12) and said fixed part (11) electrically; said electric connecting unit (2) comprising a stator (15) connected rigidly to said fixed part (11) of the helicopter (1) and having first electric contact means (16); and a movable member (17) rotated about a respective axis (A) by said rotary member (12) and having second electric contact means (18) cooperating in sliding manner with said first electric contact means (16); characterized in that said movable member (17) comprises rigid fastening means (23, 25, 27) for connection to said rotary member (12).12. A helicopter as claimed in claim 11, characterized in that said stator (15) and said movable member (17) are mounted coaxially with each other; and in that said movable member (17) is interposed radially between said stator (15) and said rotary member (12).13. A helicopter as claimed in claim 12, characterized in that said rigid fastening means (23, 25, 27) comprise two bushes (23) wedged tightly between said rotary member (12) and respective opposite end portions (21) of said movable member (17).14. A helicopter as claimed in claim 13, characterized in that said rigid fastening means (23, 25, 27) comprise a number of bolts (25) for gripping said bushes (23) to the respective said end portions (21) of said movable member (17).15. A helicopter as claimed in claim 13, characterized in that said end portions (21) of said movable member (17) are bounded towards said rotary member (12) by conical first surfaces (22) tapering towards each other; and in that said bushes (23) are bounded towards said movable member (17) by conical second surfaces (24) of the same shape as said first surfaces (22) and cooperating with the first surfaces (22).16. A helicopter as claimed in claim 11, characterized in that said stator (15) is fixed rigidly to an outer casing (11) of a power transmission unit (8) interposed between a drive unit (6) and a rotor (5) of the helicopter (1); and in that said rotary member is a shaft (12) of said transmission unit (8).17. A helicopter as claimed in claim 11, characterized in that said first electric contact means comprise a number of radial contact blades (16); and in that said second electric contact means comprise a number of annular conducting tracks (18) cooperating in sliding manner with respective said contact blades (16).18. A helicopter as claimed in claim 11, wherein said rigid fastening means comprises a mechanical fastening system interposed between said movable member (17) and said rotary member (12).19. A helicopter as claimed in claim 18, wherein said mechanical fastening system comprises at least one bushing (23) interposed between said movable member and said rotary member (12).20. A helicopter as claimed in claim 18, wherein said rigid fastening means comprises a pair of angled bushes (23) interposed between said movable member and said rotary member (12).
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