Global patent index - EP 1000360 A1

EP 1000360 A1 2000-05-17 - 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

EP 1000360 A1 (DE)

Application

EP 99926263 A

Priority

  • DE 9901157 W
  • DE 19823640 A

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 (main, further and additional classification)

G01P 3/487; F16B 21/20; H01F 7/02; H02K 1/27; H02K 11/00

IPC 8 full level (invention and additional information)

G01D 11/00 (2006.01); H02K 11/00 (2006.01)

CPC (invention and additional information)

G01D 11/00 (2013.01); H02K 11/215 (2016.01)

Citation (search report)

See references of WO 9961921A1

Designated contracting state (EPC)

DE ES FR GB SE

EPO simple patent family

DE 19823640 A1 19991202; BR 9906508 A 20000919; EP 1000360 A1 20000517; US 6373365 B1 20020416; WO 9961921 A1 19991202; WO 9961921 A8 20000106

INPADOC legal status

2003-05-14 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021101

2000-07-26 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000602

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB SE