Eddy current type retarder.,申请号EP19910109958-传众专利搜索

Eddy current type retarder.

申请公布号：EP0462564(A1)

申请号：EP19910109958

申请日期：1991.06.18

申请公布日期：1991.12.27

申请人：

ISUZU MOTORS LIMITED

发明人：KUWAHARA, TOHRU, ISUZU MOTORS LTD. KAWASAKI WORKS

分类号：H02K49/02;H02K49/04

主分类号：H02K49/02

摘要：<p>An eddy current type retarder comprising: an annular fixed frame (22) disposed inside a brake drum 7 and having a hollow portion of a box-shaped section; a pair of magnet supporting rings (13, 14) disposed in the hollow portion of said fixed frame (22), one of said magnet supporting rings (14) being mounted with said fixed frame (22), the other of said magnet supporting rings (13) being supported rotatably by the arranging pitch of the permanent magnets (13 a); a number of permanent magnets (13 a, 14 a) provided on said magnet supporting rings (13, 14) so as to be opposed to the inner peripheral surface of the brake drum (7), and polarity of each permanent magnets (13 a, 14 a) being alternately different in a peripheral direction; and a number of ferromagnetic plates (15) embedded into the outer peripheral wall of said fixed frame (22) so as to be opposed to said permanent magnets (13 a, 14 a) of said magnet supporting rings (13, 14); each of said ferromagnetic plates (15) are made to be thick in its widthwise central portion and thin in its opposite ends; and each of said permanent magnets (13 a, 14 a) have the outer surface parallel with the inner surface of said ferromagnetic plate (15). <IMAGE></p>