JPH03297776A - Emergency escaping device for elevator - Google Patents

Abstract

PURPOSE:To move a cage to the entrance of a nearmost floor by hands from the interior of the cage by linking a rotary engaging part, engaged with a linear engaging part for elevation, with the deceleration end of a transmission mechanism and linking a boosting end to a rotary handle located in the cage. CONSTITUTION:In a normal state, two members 5a and 5b of a clutch mechanism 5 are separated away from each other, even when a cage 4 is elevated by means of an elevating device and a pinion 3 is rotated, the rotation is not transmitted to a transmission mechanism 6 and a rotary handle 8 is also not operated. When, during emergency, e.g. outage, a cage 4 is stopped between floors and passengers remain in the cage, the passenger first manually operates a lever 5c on an upper inner 4b of the cage 4 to interconnect the two members 5a and 5b of the clutch mechanism 5. Thereafter, through manual operation of the rotary handle 8 for rotation, a boosting end 6b of the transmission mechanism 6 is rotated through a transmission member 7. Simultaneously with the decrease of a rotation speed by means of the mechanism 6, torque is increased to rotate the pinion 3, and along with the rotation, the cage 4 is moved upward or downward and caused to approach the entrance of a nearmost floor.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an emergency escape device for an elevator that allows passengers to escape from a stopped car in an emergency such as a power outage.

<Prior Art> Conventionally, as an emergency escape device for this type of elevator, for example, a backup power supply facility is provided separately from the drive power supply equipment connected to the elevator's lifting device, and the elevator is operated by this backup power source facility in the event of a power outage. , a device that moves the car to the entrance of the nearest floor, or a ladder that is installed along the hoistway after an emergency escape is established in the car and the person can exit the car through the emergency exit in the event of an emergency such as a power outage. There are things you can use to escape.

<Problems to be Solved by the Invention> However, in the case of the former type of emergency escape device for elevators, backup power equipment is required, which increases the overall size of the equipment, making it particularly difficult for small elevators. In the case of the latter type, there is a problem that it is extremely dangerous because the passengers have to step outside the car and move along the hoistway.

In view of the conventional situation, the present invention aims to manually move a car from inside the car to the entrance/exit of the nearest floor.

<Means for Solving the Problems> The technical means taken by the present invention to solve the above problems is to provide a linear engagement part in the vertical direction along the hoistway, and to engage with this linear engagement part. The car is characterized in that the car is provided with a rotational engagement part that moves up and down by the car, and the rotational engagement part is linked to a deceleration end of the transmission mechanism, and the speedup end is linked to a rotation handle provided inside the car. It is.

<Operation> According to the technical means of the present invention, when the rotary handle is manually operated in an emergency, the speed change gear mechanism slows down the rotational speed and increases the torque to rotate the rotational engagement part, thereby achieving linear engagement. The car moves up and down along the section.

<Example> Hereinafter, one embodiment of the present invention will be described based on the drawings.

In this embodiment, as shown in FIG. 1, a rack is provided as a linear engagement part 2 over the entire length of a hoistway 1, and is provided separately from a lifting device such as a rope type or hydraulic type (not shown) connected to a drive power supply equipment.
A pinion is provided on the brocade top surface 4a of the car 4 as a rotational engagement portion 3 that engages with the linear engagement portion 2.

The rack 2 is disposed parallel to a guide rail 1a that guides the car 4 in the vertical direction, and its tooth surface 2a faces the tooth surface 3a of the pinion 3 and engages with it in the vertical direction.

The pinion 3 is attached to the center of the pinion 3 by inserting one end of the rotating shaft 3h, and the middle part of the rotating shaft 3b is horizontally supported on the brocade top surface 4a of the car 4 via a bearing 3c, and the rotation of the pinion 3 is A clutch mechanism 5 is provided at the other end of the shaft 3b, and the shaft 3b is linked to a reduction end 6a of a transmission mechanism 6, which will be described later.

The clutch mechanism 5 consists of a pair of members 5a and 5b that move toward and away from each other in the axial direction of the rotating shaft 3b.
, 5b is of a conventionally well-known structure in which power is transmitted from the driving side to the driven side when they are in contact and cut off when they are separated, and in the case of this embodiment, it is a so-called dog clutch, and one member 5a on the transmission mechanism 6 side is Lever 5 arranged on the raised surface 4b of the car 4
By manual operation c, the pinion 3 is moved toward and away from the other member 5b on the pinion 3 side.

The transmission mechanism 6 has a conventionally known structure in which a number of large and small sets of gears are arranged in mesh to change the rotational speed and torque, and the speed increasing end 6
b is connected to a rotating handle 8 via a transmission member 7 such as a chain.

The rotary handle 8 is manually operated by a passenger in the car 4 to rotate the speed increasing end 6b of the transmission mechanism 6, and in this embodiment, it is bent into a crank shape and its base end is connected to the end of the car 4. It is pivotally supported on the inner surface 4C and linked to the transmission member 7.

Preferably, the rotating handle 8 is detachably attached to the transmission member 7 so that it is attached only in an emergency.

Next, the operation of such an elevator emergency escape device will be explained.

In a normal state, both members 5a and 5b of the clutch mechanism 5 are separated as shown in FIG. Rotation/'% handle 8 also does not work.

In the event of an emergency such as a power outage, if the car 4 stops between floors and a passenger is left inside, the passenger must first move the lever 5C on the upper surface 4b of the car 4 as shown in FIG. Connect both members 5++ and 5b of the clutch mechanism 5 by manual operation as shown in FIG.

Thereafter, by manually operating and rotating the rotating bundle 8, the speed increasing end 6b of the transmission mechanism 6 rotates via the transmission member 7, and the rotation speed of the mechanism 6 decreases and the torque increases to drive the pinion 3. As the car rotates, the car 4 moves upward or downward and approaches the entrance of the nearest floor.

In the above-mentioned embodiment, the linear engagement part 2 provided in the hoistway 1 is a rack, and the rotary engagement part 3 provided in the car 4 is a pinion, but the present invention is not limited to this. Both engaging portions 2 and 3 may be constructed of other members as long as they convert rotational motion into linear motion.

Further, although the clutch mechanism 5 is provided between the rotational engagement part 3 and the transmission mechanism 6, the present invention is not limited to this, and the rotational engagement part 3 and the transmission mechanism 6 may be linked directly.

<Effect of the invention> Since the present invention has the above configuration, it has the following advantages.

In an emergency, by manually operating the rotary handle, the speed change mechanism slows the rotation speed and increases the torque, which rotates the rotary engagement part and moves the car up and down along the linear engagement part, allowing the car to move up and down along the linear engagement part. The car can be manually moved to the entrance/exit of the nearest floor.

Therefore, compared to the conventional system in which a backup power supply facility is provided separately from the driving power supply facility, there is no need to provide a backup power supply facility, making it more compact and particularly effective in small elevators, as well as providing an emergency escape exit in the car. Compared to conventional cars, it is safer because passengers do not have to leave the car.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway longitudinal sectional front view of an elevator emergency escape device according to an embodiment of the present invention, showing a state in which the clutch mechanism is disengaged, Fig. 2 is a transverse plan view of the same, and Fig. 3 is a longitudinal sectional view of the same. The right side view and FIG. 4 are partially enlarged longitudinal sectional front views showing the state in which the clutch mechanism is connected with solid lines. Special 1... Hoistway 3... Rotating engagement part 6... Speed change mechanism 6b... Speed increase end permission

Claims (1)

[Claims] A linear engagement part is provided in the vertical direction along the hoistway, and a rotary engagement part that engages with the linear engagement part to move up and down is provided on the car, and the rotation engagement part is connected to the deceleration end of the transmission mechanism. An emergency escape device for an elevator, characterized in that a speed increasing end is linked to a rotating handle provided inside the car.