EP 1000360 A1 20000517 - HOLLOW MAGNETIC BODY FOR DETECTING THE ROTATION OF A SHAFT
Title (en)
HOLLOW MAGNETIC BODY FOR DETECTING THE ROTATION OF A SHAFT
Title (de)
HOHLER MAGNETKÖRPER ZUM ERFASSEN EINER DREHUNG EINER WELLE
Title (fr)
CORPS MAGNETIQUE CREUX POUR DETECTER LA ROTATION D'UN ARBRE
Publication
Application
Priority
- DE 9901157 W 19990417
- DE 19823640 A 19980527
Abstract (en)
[origin: DE19823640A1] The hollow magnetic body comprising shafts for detecting the rotation of shafts are known in prior art. Said magnetic bodies have a rotationally symmetrical configuration and are permanently magnetized so that they may have at lest one north pole and a south pole for generating signal tensions in the sensors, for instance Hall sensors. According to the invention, a hollow magnetic body (2a) is combined with an annular auxiliary body (9a) and produced as a composite component in an injection molding process. The inner diameter of the annular auxiliary body (9a) is larger than the diameter of the allocated shaft (3) so that a tubular section (10) extends from the material of the hollow magnetic body (2a) between said shaft (3) and the annular auxiliary body (9a) with the purpose of forming a press fit. The annular metal auxiliary body (9a) provides most of the compressive forces required to counteract the risk of cracking of the hollow magnetic body (2a).
IPC 1-7
IPC 8 full level
G01D 11/00 (2006.01); H02K 11/215 (2016.01)
CPC (source: EP KR US)
G01D 5/2033 (2013.01 - KR); G01D 11/00 (2013.01 - EP US); G01P 3/487 (2013.01 - KR); H02K 7/1166 (2013.01 - KR); H02K 11/215 (2016.01 - EP US)
Citation (search report)
See references of WO 9961921A1
Designated contracting state (EPC)
DE ES FR GB SE
DOCDB simple family (publication)
DE 19823640 A1 19991202; BR 9906508 A 20000919; EP 1000360 A1 20000517; KR 20010021799 A 20010315; US 6373365 B1 20020416; WO 9961921 A1 19991202; WO 9961921 A8 20000106
DOCDB simple family (application)
DE 19823640 A 19980527; BR 9906508 A 19990417; DE 9901157 W 19990417; EP 99926263 A 19990417; KR 20007000363 A 20000113; US 46348100 A 20000410