US 12,365,566 B2
Release unit for actuating an elevator brake device
Karl Kriener, Viehdorf (AT); René Holzer, Scheibbs (AT); Christoph Russwurm, Ober-Grafendorf (AT); Leopold Latschbacher, Neustadtl a.d. Donau (AT); and Lukas Schwaigerlehner, Scheibbs (AT)
Assigned to Wittur Holding GmbH, Wiedenzhausen (DE)
Appl. No. 17/767,947
Filed by Wittur Holding GmbH, Wiedenzhausen (DE)
PCT Filed Oct. 12, 2020, PCT No. PCT/EP2020/078608
§ 371(c)(1), (2) Date Apr. 11, 2022,
PCT Pub. No. WO2021/069739, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 202019105584.7 (DE), filed on Oct. 10, 2019.
Prior Publication US 2024/0383725 A1, Nov. 21, 2024
Int. Cl. B66B 5/22 (2006.01)
CPC B66B 5/22 (2013.01) 12 Claims
OG exemplary drawing
 
1. A triggering unit for actuating an elevator braking device, comprising:
a triggering base body which can be mounted on an elevator car,
a trigger,
a contact element and a coupling link via which the contact element can be connected to an elevator braking device, wherein the trigger keeps the contact element at a distance from a guide rail in an untriggered state and brings the contact element into frictional contact with the guide rail in a triggered state, so that, in an event of a relative movement between the elevator car and the guide rail, the contact element moves along a gap between the triggering base body and the guide rail, carries along the coupling link and causes the elevator braking device to respond automatically due to the movement of the coupling link, wherein the triggering unit can be mounted separately on the elevator car or at a distance from the elevator braking device and is connected to the elevator braking device exclusively via the coupling link, wherein the coupling link has an elongated hole via which the coupling link is connected to the contact element by a bolt so that the coupling link is only carried along by the contact element when the bolt connecting the contact element and the coupling link has reached an upper end of the elongated hole,
wherein when the trigger is not activated, the bolt is located in the lower area of the elongated hole, and
wherein the trigger is a rocker arm which is set in rotation to get from the triggered state to the untriggered state and vice versa, and which has a support for the contact element which prevents all translational movements of the contact element in the triggered state, except upwards, parallel to the guide rail.