US 11,999,056 B2
Brake assembly for a drive device in a robot
Tim Rokahr, Munich (DE); Andreas Spenninger, Karlsfeld (DE); and Carles Calafell Garcia, Munich (DE)
Assigned to FRANKA EMIKA GMBH, Munich (DE)
Appl. No. 17/609,598
Filed by FRANKA EMIKA GMBH, Munich (DE)
PCT Filed May 7, 2020, PCT No. PCT/EP2020/062793
§ 371(c)(1), (2) Date Dec. 10, 2021,
PCT Pub. No. WO2020/225394, PCT Pub. Date Nov. 12, 2020.
Claims priority of application No. 10 2019 112 023.3 (DE), filed on May 8, 2019.
Prior Publication US 2022/0212354 A1, Jul. 7, 2022
Int. Cl. B25J 19/00 (2006.01); F16D 125/38 (2012.01)
CPC B25J 19/0004 (2013.01) [F16D 2125/38 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A braking device for a drive device of a joint between two links of a robot arm comprising a brake activation device and a locking element, wherein the brake activation device is designed to bring the locking element into engagement with a braking element when required, which is connected to a rotor of the drive device in a rotationally fixed manner in order to stop a rotation of the rotor, the locking element being designed as a bolt and the braking element being designed as a braking star which comprises at least one web projecting radially from an axis of the rotor,
characterized in that
the web comprises an impact surface which interacts with the bolt when engaged, and which is curved inwards with respect to a direction of rotation of the braking star and comprises a radius (RA) which corresponds at least to a radius (DB/2) of the bolt, and in that the impact surface extends in the radial direction beyond a distance (LB) between the axis of the rotor and an axis of the bolt.