US 12,308,726 B2
Centrifugal positive locking brake and method for controlling shutter drives
Sten Währisch, Dresden (DE)
Assigned to JOHNSON ELECTRIC GERMANY GMBH & CO. KG, Dresden (DE)
Filed by JOHNSON ELECTRIC GERMANY GMBH & CO. KG, Dresden (DE)
Filed on Dec. 30, 2022, as Appl. No. 18/091,526.
Application 18/091,526 is a continuation of application No. PCT/EP2021/066622, filed on Jun. 18, 2021.
Claims priority of application No. 10 2020 117 684.8 (DE), filed on Jul. 3, 2020.
Prior Publication US 2023/0137414 A1, May 4, 2023
Int. Cl. H02K 7/102 (2006.01); F16D 59/00 (2006.01); F16D 63/00 (2006.01); E06B 9/72 (2006.01); F16D 121/22 (2012.01)
CPC H02K 7/102 (2013.01) [F16D 59/00 (2013.01); F16D 63/006 (2013.01); E06B 9/72 (2013.01); F16D 2121/22 (2013.01); H02K 2207/03 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A centrifugal positive locking brake for shutter drives, comprising centrifugal blocks, at least one spring (5), a drive motor (6) disposed in a tubular housing (13), and a drive/output shaft (7),
wherein a turntable (2) is coupled with the drive/output shaft (7) of the drive motor (6),
a central spring element (4) having the least one spring (5) disposed inside is centrifugally guided in a guide of the turntable (2),
wherein each spring (5) is connected with a radially movable engaging locking element which is guided in the turntable (2),
on the central spring element (4) there are radially impacting inner abutments (14, 15),
which move against abutments in the turntable (2),
characterized in that at least one ratchet (8) is disposed on each spring element (4),
each ratchet (8) has a centrifugal block (3) fastened to it,
which is formed as a single part or as two centrifugal block parts (11),
when the drive motor (6) is de-energized, at least one ratchet (8) engages a locking abutment (9) of a locking disc (1),
when voltage is applied and the drive motor (6) starts, the ratchet(s) (8) disengage.