Electrically operable vehicle parking brake drive

B - Operations – Transporting – 60 – T

Patent

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Details

B60T 13/74 (2006.01) B60T 13/66 (2006.01) B61H 13/04 (2006.01)

Patent

CA 2515028

An electrically or manually operable brake drive for the brakes of a vehicle which has a gear train optionally driven by a reversible electric motor (33) or a manual member (20). The brakes can be set or released by the electric motor (33) without manual changing of the drive components permitting setting and releasing of the brakes at a location remote from the drive. For maintaining the brakes in a "set" mode, the drive includes a gradual release detent mechanism (5) which permits rotation of the gears in the brake setting direction but opposes such rotation in the opposite direction unless a drive shaft (2) rotatable by the motor (33) or the manual member (20) is rotated in the brake release direction.

L'invention concerne un dispositif d'entraînement de frein pouvant fonctionner manuellement ou électriquement pour les freins d'un véhicule, qui présente un train d'engrenages éventuellement commandé par un moteur électrique réversible ou un élément manuel. Les freins peuvent être bloqués ou débloqués par le moteur électrique sans changement manuel des composants d'entraînement, ce qui permet le blocage ou le déblocage des freins à distance du dispositif d'entraînement. Afin de maintenir les freins dans un mode <= bloqué >=, le dispositif d'entraînement comprend un mécanisme de détente à libération graduelle qui permet la rotation des engrenages dans la direction de blocage des freins, mais oppose cette direction dans la direction opposée jusqu'à ce qu'un arbre de transmission, pouvant tourner grâce au moteur ou à l'élément manuel, effectue une rotation dans la direction de déblocage des freins.

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