US 11,946,778 B2
Retaining device for a rotary encoder
Volker Dölz, Bad Neustadt (DE)
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Appl. No. 17/435,956
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Feb. 10, 2020, PCT No. PCT/EP2020/053319
§ 371(c)(1), (2) Date Sep. 2, 2021,
PCT Pub. No. WO2020/177985, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 19161010 (EP), filed on Mar. 6, 2019.
Prior Publication US 2022/0146285 A1, May 12, 2022
Int. Cl. H02K 11/21 (2016.01); G01D 5/244 (2006.01); H02K 11/01 (2016.01); H02K 11/215 (2016.01); H02K 11/40 (2016.01); G01D 5/347 (2006.01); H02K 11/22 (2016.01)
CPC G01D 5/24442 (2013.01) [H02K 11/0141 (2020.08); H02K 11/215 (2016.01); H02K 11/40 (2016.01); G01D 5/34738 (2013.01); H02K 11/22 (2016.01); H02K 2211/03 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A retaining device for coupling an encoder unit of a rotary encoder to an electric machine, said retaining device comprising:
an end shield comprising a semicircular band element having opposing guide grooves oriented perpendicular to an encoder bearing shaft for receiving an encoder module of the encoder unit, said encoder module having guide tabs constructed to engage in the opposing guide grooves;
a retaining ring including a first coupling element for mechanically coupling the retaining ring to the end shield and constructed to clamp the encoder module and press the encoder module against the end shield, said first coupling element being embodied as a hole;
a first fastening screw received in the hole to mechanically fasten the retaining ring to the end shield; and
a shielding element integrally formed on the retaining ring for shielding against an external interference field.