JPH03184568A - Emergency escaping device - Google Patents

Abstract

PURPOSE:To enable an emergency escaping device to be mounted to a structure and bringing fall controlled according to various weight by providing a shaft for supporting a cable wound drum and a controller built in a housing connected to the shaft to control the rotational speed of the shaft. CONSTITUTION:A cable 3 wound drum 2 is provided in a housing 1 of an emergency escaping device. When a winch drum 2 is rotated to wind the cable 3, a gear 6 is composed so as to increase the rotational speed of an impeller 9 to three times the speed of the winch drum 2. The gear 6 and impeller 9 are housed in an enclosed space 15 filled with viscous fluid. When a load is applied to an end of the cable, the drum 2 is rotated. The blades of the impeller 9 is rotated in oil to delay the rotational speed of the drum 2. The speed of the drum varies with the falling load. The faster the rotation of the drum 2 is, the larger a frictional resistance force applied to the impeller moving in an oil tank is, so that decelerating fall relative to the drum 2 is enlarged.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an emergency evacuation system, and more particularly to an emergency evacuation system, which, in use, removes a load, typically a person, from a structure at a controlled constant rate. This invention relates to a device for controlling the speed of descent.

BACKGROUND OF THE INVENTION The use of escape devices to remove loads from buildings or other structures is well known. The aforementioned device includes a control mechanism having one mechanical component. Examples of well-known escape devices are disclosed in New Sealant Patent Specifications No. 178,152 and No. 165,786.

The escape device described in New Sealant Patent Specification No. 178152 includes a spring assisted by a wheel with wind vanes as a control mechanism. In the case of the device disclosed in New Sealant Pat. In this case, the rope is let out by hand.

(Problem to be solved by the invention) The controlled descent device disclosed in this prior art.

Many mechanical components are expensive to manufacture and maintain, and are prone to failure due to accidents. Additionally, these devices may not easily accommodate different weights, such as children and adults.

In addition, it is apparent that once the flexible cable has been unwound from the winch drum, it is not easy to rewind it back onto the drum in an orderly manner. This is because the cable is stretched as it is wound back onto the drum.

This is because they get tangled. For this reason, as an alternative, Mizuide 191 invented a replaceable or cartridge-type drum and a cable that could be wrapped by a precision device and made disposable or re-spooled by the precision device.

It is therefore an object of the present invention to provide an emergency evacuation device that can be easily attached to a building or structure and that can provide controlled lowering for a variety of different weights.

(Means for Solving the Problems) The present invention provides an emergency escape device, which has a housing, the housing supports a shaft supported by a bearing attached to the housing, and the above-mentioned The shaft supports a drum for winding the cable, and the housing further includes a control device connected to the shaft to control the rotational speed of the shaft.

The governor can be connected directly or indirectly to the shaft and can also have vanes located within a closed space filled with one or more viscous fluids.

The aforementioned drum can also be an easily replaceable cartridge wrapped around a cable.

Conveniently, other governors can also be used, such as a centrifugal clutch.

Further aspects of the invention, which must be taken into account in all of its novel embodiments, will become apparent from the following description, which is given by way of example only.

(Example) An example of the present invention will be described with reference to the accompanying drawings below, but this description is merely an example.

Please refer to FIG. The emergency evacuation device has a housing 1 in which there is a drum 2 around which a cable 3 is wound. The housing 1 supports a shaft 4 to which a drum 2 is attached. The shaft 4 extends transversely within the housing 1 .

The shaft 4 is loaded into a bearing 5. The shaft 4 has a series of gears indicated generally by arrows 6. The shaft 4 has bearings 5, 7 . and 8, respectively. Gear 6 is
When shaft 4 rotates.

Driven. The gear 6 is set to 1Ml so that when the winch drum 2 rotates to unwind the cable 3, the speed at which the impeller 9 rotates is increased to three times the speed of the winch drum 2. The gear 6 includes a first gear 10 that meshes directly with the shaft 4 and has 32 teeth, and this gear 10 also drives a small gear 11 located directly above this gear 10. The number of teeth of this small gear 11 is approximately 10
Therefore, the speed increase ratio is 3:1. The aforementioned small gear 11 is connected to the second shaft 12 together with another gear 13 having about 32 teeth. This gear 13 drives a small gear 14 having the number of teeth 10 located directly below. This small gear 14 meshes with the impeller 9, and the speed increasing ratio is 3:
1 can be maintained. The gear 6 and impeller 9 are connected to a closed space 15 filled with oil or other viscous fluid.
Store it inside.

When the load on the end of the cable is lowered towards the ground, the drum 2 begins to rotate and the gear 6 moves the space 1 at a speed that creates frictional resistance as the blades of the impeller 9 move in the pond.
The impeller 9 is rotated within 5. This slows down the speed at which drum 2 rotates and keeps said speed constant. Since the speed of the drum varies depending on the load being lowered,
It will be clear that this influences the speed of the impeller 9, which in turn controls the rotational speed of the drum. The faster the drum 2 rotates, the greater the frictional resistance force acting on the impeller moving within the oil tank, and as a result, the greater the deceleration effect on the drum 2.

For example, one key 17 may be provided on the shaft 4, and the above-mentioned key 17 may be slid into the key groove of the hub 18 of the drum 2 and engaged. Housing l.

The end portion 19 is configured so that it can be easily removed and a replacement drum 2 can be attached. In this way, the drum 2 can also be shaped as a disposable item in order to overcome the problem of unwinding the cable evenly onto the drum 2. In the case of a building, a single device and multiple disposable cartridge style drums would be considered, such drums being easily attached to the device in an emergency.

When in use, V5. The emergency escape device is attached by hanging from a gantry or the like attached to the inside or outside of a building or structure by a part 16.

Once in use, the drum 2 can be easily replaced by another similar drum, with cables already neatly wound around the drum.

It will be obvious that many changes and modifications can be made to this invention without departing from its scope. For example, it is possible to change the ratio of the gears driving the impeller, thus increasing or decreasing the retarding effect exerted on the rotational movement of the drum. The control mechanism does not have to be limited to an impeller submerged in oil.
For example, it is also possible to use a centrifugal clutch.

[Brief explanation of drawings]

FIG. 1 is a sectional view of the emergency escape device according to the present invention, FIG. 2 is a sectional view taken along the arrow A-A in FIG. 1, and FIG. 3 is a sectional view taken along the arrow B in FIG. 1. -B is a cross-sectional view along line B. 1...Housing, 3...Cable, 2...Winch drum, 4...Shaft, 5.7.8...Bearing, 6
... Gear, 9 ... Impeller, 10.11.13.1
4... Gear, 12... Shaft, 15... Closed space, 1
7...Key, 18...Hub, 19...End, 16
...Installation is by parts. FIG. 2

Claims (7)

[Claims] (1) Consists of a housing that supports a shaft passed through a bearing provided in the housing, the shaft supports a drum around which a cable is wound, and the housing is further connected to the shaft to control the rotational speed of the shaft. An emergency escape device characterized by having a built-in control device. (2) The governor is directly or indirectly connected to the shaft and can further include vanes provided in a closed space filled with one or more types of viscous fluid. The emergency escape device according to claim 1. (3) The emergency evacuation device according to claim 1 or 2, wherein the drum is an easily replaceable cartridge wrapped with a cable. (4) An emergency evacuation device according to any one of claims 1 to 3, characterized in that an alternative speed governor can be used, typically a centrifugal clutch. (5) The apparatus has a housing having a drum wound therein, the hanging supporting an axle for the drum, the axle passing through the housing and being loaded in a bearing, and the axle being connected in series. The gear has a gear or gears, the gear is driven when the shaft rotates, and the gear is driven by the winch.
The emergency escape according to any one of claims 1 to 4, characterized in that when the drum rotates to unwind the cable, the speed at which the impeller rotates is increased to three times the speed of the winch drum. Device. (6) The emergency escape device according to claim 5, wherein the impeller and the gear are installed in a sealed area of a housing filled with a highly viscous fluid. (7) The end cover of the housing can be easily removed, and a replacement cartridge-type drum wrapped with an incidental cable can be inserted therein. Emergency escape device.