TH40914A - Emergency release device - Google Patents

Abstract

The DC60 (16/12/42) provided an emergency release device for passenger elevators and consisted of a main component, a manually operated drive part, and an actuator part. The manually operated drive part allowed the elevator box to move via the elevator drive unit, and the actuator part allowed the actuator to engage the elevator drive unit and brake (21, 25). At the release of the elevator drive unit, a pivot device (16, 17), a flexible rod (15), and an open-circuit spur gear set (1, 2, 3) acted as the drive and open-circuit switching mechanism. Or the connection of the open-close rotor gear set is made by using a handle (14) with an elbow joint mechanism, a pull cable (12), a pull wire (13) and a forked linkage (11). At the pivot devices (16, 17) there is a handle (18) for remotely releasing the brakes activated by the pull cable (19, 29). An emergency release device is provided for passenger elevators and consists of a main component, a manually operated drive part and an actuator part. The manually operated drive part allows the elevator box to be moved by the elevator drive unit and the actuator part allows the actuator to be activated by the elevator drive unit and the brakes (21,25) to be released by the elevator drive unit. There are pivot devices (16,17), a flexible rod (15) and an open-close rotor gear set (1,2,3) as the drive parts for switching the open-close rotor. Or the connection of the ratchet drive gear set for opening and closing the circuit is made by using a handle (14) with an elbow joint mechanism, a pull cable (12), a pull wire (13) and a forked linkage (11). At the pivot devices (16,17) there is a handle (18) for remotely releasing the brake, which is activated via the pull cable.

Claims (10)

1. Manually activated emergency release device for indoor or building elevators where the elevator box is moved by a movable transport component driven by a pulley. This pulley is driven by a drive unit with an elevator motor and brakes, and with or without a gear transmission. The emergency release device consists of a device for creating an operational linkage working with the elevator drive unit, a manually operated drive component, a mechanical transmission device, and an operating component for remotely activating the operational linkage working with the elevator drive unit. Specifically, the emergency release device should have a pivot device as the drive component, preferably with a flexible rod, and the operational linkage working with the elevator drive unit should consist of a gear wheel that can move along the side of the gear teeth without changing the depth of engagement. 2. The emergency release device under claim 1 is specified as follows: the gear set shall act as a spur gear set, as a gear set with parallel teeth along the axis, or as an internal gear set. 3. The emergency release device under claim 1 is characterized by the axles of the wheels and gears of the operating linkages that can open and close the circuit not being parallel to each other. 4. The emergency release device under claim 1 is specified as having a drive unit, pivot and operating parts provided in an actuation port, and is specified as having an actuation port in the elevator shaft wall or in the area in front of the door. 5. The emergency release device pursuant to claim paragraph 1 is characterized as a self-returning first handle located on the pivot device and a second handle that remains in the pulled-down position, which is available as an additional component for the operation. 6. The emergency release device pursuant to claim paragraph 2, which is characterized by a first, self-returning handle constructed in the form of a bicycle brake lever, and a second, retaining handle in a pulled-down, adjustable position constructed in accordance with the principles of an elbow joint. 7. The emergency release device under Requisition 1, which is specified to have a pulling cable, pulling wire, forked coupling, pressure ring, spring, longitudinal movable shaft with a toothed drive gear, and spur gear, is a mechanical power transmission device for establishing the operational connection of the second handle to the lift drive unit. 8. Emergency release device pursuant to claim 1, which is characterized as a brake release device that can be operated manually at a certain distance from the first handle, which is self-returning, has a pull cable which acts as a mechanical power transmission device, and has a pull wire which is operationally connected to the manual release lever of the brake release magnet. 9. The emergency release device under claim 1 shall be characterized by a switch housing that moves with the shaft and a safety contact that is activated by the switch housing. 10. The emergency release device under claim 1 shall be specified to have a pivot device with a jointed pivot rod as the driving component.