JPS6019732Y2 - Emergency rescue bag fixing device - Google Patents

Description

[Detailed explanation of the invention] This invention is designed to quickly and securely fix the lower end of a rescue bag to the foundation of a sidewalk or road, etc., for escaping from a building through a window, etc. in the event of an emergency such as a fire in a high-rise building. This invention relates to a fixing device for an emergency rescue bag.

Emergency rescue bags are used to allow people to escape from the building through windows in the event of a fire.

Considering the purpose of use of such an emergency rescue bag, it is important to quickly secure the lower end of the bag to the sidewalk or road base in as short a time as possible so that the bags can be lowered one after another in order to save lives. Desirable from this point of view.

An example of an emergency rescue bag is shown in Fig. 1, in which the rescue equipment main body 1 is formed by pasting canvas 3 onto a heat-resistant belt 2, and the upper end of the rescue equipment main body 1 is attached to a building (not shown). It is fixed to the window and is usually folded up.

An outlet shape-retaining rod 4 is attached to the lower end of the rescue equipment main body 1, and a rope 5 is fixed to each outlet shape-retaining rod 4.

A fixed ring storage box 6 is formed on a base such as a sidewalk or a road, and is usually covered with a cover material 7.

The connecting fitting 10 at the tip of the fixing device 9 attached to the rope 5 is hooked onto the fixed ring 8 in the storage box 6, and the rope 13 stretched between the first pulley device 11 and the second pulley device 12 is free. By pulling out the end 14, the lower end of the rescue equipment main body 1 is fixed to the base.

In the conventional fixing device, the free end 14 of the rope is pulled out to a required length and then the free end 14 is tied to the rope 13 to prevent the rope from loosening due to the load when the rescue bag 1 is being lowered by a person. It's happening.

When securing the rescue bag by tying the rope in this manner, not only does it take time to secure the rescue bag, but depending on the way the rope is tied, the rope may gradually loosen as the person descends.

It is not desirable that it takes even a small amount of extra time to secure the rescue bag, since the rescue bag is used in an emergency.

In particular, rope 13 is often twisted, and rope 1
If 3 is twisted, sufficient tightening force will not be applied when fixing the rescue bag, and it will take time to untwist the bag, which will lengthen the time it takes to fix the rescue bag.

This invention allows the rescue bag to be fixed to the base with a single touch action of hooking the hook to the fixed ring in the fixed ring storage box and then pulling out the free end of the rope. The purpose is to quickly and reliably fix the rescue bag by maintaining its fixed state without loosening. In the emergency rescue bag that allows a person to descend into the rescue equipment main body while being fixed to the rescue equipment main body, a connecting fitting connected to the lower end of the rescue equipment main body is rotatably attached to a second pulley main body. A pulley is attached to form a first pulley device, and a hook connected to a fixed end laid on the base is attached to a second pulley body to form the second pulley device.
Two pulleys, a primary and a secondary pulley, are pivotally supported on the pulley body, and a ratchet pawl that fixes a ratchet wheel to at least the secondary pulley and meshes with the ratchet wheel to prevent the secondary pulley from reversing is provided as the second pulley. A second pulley device is formed by attaching the rope to the pulley body, one end of which is fixed to the first pulley body.
From the primary pulley of the pulley device to the second pulley of the first pulley device
Wrap the cable around a secondary pulley of a pulley device to make the other end of the cable a free end, pull out the free end, bring the first pulley device and second pulley device close together, and fix the lower end of the rescue bag to the base. It is characterized by the following.

Next, an embodiment of the present invention shown in FIGS. 1 to 7 will be explained. The rescue equipment main body 1 is formed as described above, and as shown in FIG. A person descends while fixed to the ground.

The fixing device 9 includes a first pulley device 11 having a connecting fitting 10 connected to the rope 5 forming the lower end of the rescue equipment main body 1 fixed to the exit shape retaining rod 4, and a fixed ring in the storage box 6 forming the fixed end. A cable 13 such as a rope is wound around a second pulley device 12 having a hook 15 connected to a second pulley device 12.

The details of this fixing device 9 are shown in FIGS. 2 to 7, in which an annular connecting fitting 10 connected to the rope 5 is rotatably attached to a bifurcated first pulley body 17 by a thrust bearing 16. One pulley 18 is rotatably supported by a shaft 19 on the first pulley main body 17.

As shown in FIG. 7, the hook 15 connected to the fixed ring 8 attached to the base and forming the fixed end is connected to the opening/closing lever 21 so that a part of the annular hook opens and closes only inwardly around the pin 20. Normally, the spring 22 forms a snap hook that constitutes the snap hook 15, as shown by the solid line.
The opening/closing lever 21 is pushed inward against the force of 2, and the fixed ring 8 and the snap hook 15 are engaged with each other.

This hook 15 has a pin hole 23 provided therein and a second
The pulley body 24 is fixed to the second pulley body 24 by inserting a pin (not shown) into a pin hole 25 provided in the pulley body 24 .

A primary pulley 27 and a secondary pulley 28 are attached to the second pulley main body 24 so as to be rotatable with respect to a shaft 26 supported by the second pulley main body 24 and spaced apart from each other by a spacer 29 .

Each side of the secondary pulley 28 has a ratchet wheel 30.3.
Ratchet pawls 33 and 34 to which 1 is fixed and meshed with these
is attached to a pin 32 attached to the second pulley body 24, as shown in FIGS.

These ratchet pawls 33, 34 are integrally constructed with a pawl 35 that bites into the rope 13 wrapped around the secondary pulley 28, and a spring 36 causes the ratchet pawls 33, 34 and the ratchet wheel 30, 31 to mesh with each other. A spring force is applied, and the ratchet pawl 33.34 resists this spring force.
In order to separate the ratchet wheel 30, 31 from the ratchet wheel 30, 31, a knob 39 is attached to the second pulley body 24, to which a lever 38 is fixed, which operates a lever 37 which is integrally attached to these ratchet pawls 33, 34 and pawl 35. ing.

As shown in FIGS. 5 and 6, the second pulley body 24 is further provided with four holes 40 through which the rope 13 passes, and a guide roller 41 is attached to each hole 40.

One end 42 of the rope 13 is fixed to a bolt 43 fixed to the first pulley body 17 as shown in FIGS.
8 and further around the secondary pulley 28 , the other free end 14 of the rope 13 is let out to the outside of the second pulley device 12 .

When fixing the rescue equipment body 1, it is necessary to hook the hook 15 of the second pulley device 12 onto the fixing ring 8 and then tension the rope 13.

As in this case, the first pulley device 11 and the second pulley device 12
When the free end 14 of the rope 13 is brought closer to each other,
Pull it out and do it.

Pull out the free end 14 of the rope 13 by the required amount and
If it is fully tensioned, the ratchet wheel 30.31
Since the ratchet pawls 33 and 34 engage with each other, the rescue equipment body 1
Even if a person descends inside, the rope 13 will not loosen.

At this time, the secondary pulley 28 is different from the primary pulley 27,
Since the rope 13 has a tapered groove shape, the rope 13 will fully bite into the secondary pulley 28, and the rope 13 will not loosen even if a load is applied when a person descends.

Loosening of the rope 13 is also prevented by the claws 34 biting into the rope 13.

When loosening the rope 13, move the knob 39 clockwise from position S to position F in FIG.
This is done by operating the lever 37 to disengage the ratchet pawls 33, 34 and the ratchet wheels 30, 31.

The ropes between the pulley 18 and the primary pulley 27 may be parallel to each other as shown in FIG. 2, or may be crossed.

However, in the case of parallel hanging, when pulling out or returning the free end of the rope 13, the primary pulley 27 and secondary pulley 28
Since the two rotate in the same direction, it is possible to fix the ratchet wheel to the primary pulley 28 as well, but this is not possible in the case of a cross-hook because the directions of rotation are opposite to each other.

When fixing the rescue equipment main body 1 by pulling the free end 14, even if the rope 13 is twisted, the connecting fitting 10 is attached to the first pulley main body 11 so that the rope 13 can rotate freely. By simply pulling the free end 14, the first pulley device 11 rotates, thereby automatically untwisting it.

Therefore, with conventional fixing devices, when the free end 14 of the rope 13 is pulled, if the rope 13 is twisted, this sometimes occurs, but the rope 13 cannot be easily pulled, and the rescue equipment Whereas it took time to fix the main body 1, the fixing device of the present invention can quickly fix the rescue equipment main body 1 even if the rope 13 is twisted.

According to the present invention described above, in the event of an emergency such as a fire, the emergency rescue bag installed near the window is dropped out of the window, and the hook 15 is hooked on the fixed ring 8 in the storage box 6 laid on the foundation such as the sidewalk. By simply pulling out the free end 14 of the rope 13, the rescue equipment main body 1 is fixed, and the larger rescue equipment main body 1 is gradually fixed.
Even when the rescue equipment main body 1 is lowered, the rope 13 does not loosen due to the engagement between the ratchet pawls 33, 34 and the ratchet wheels 30, 31, and the rope 13 maintains a tensioned state and continues to fix the rescue equipment main body 1.

Even if the rope 13 is twisted when the free end 14 is pulled, the twist will be unraveled by the pulling action since the metal fitting 10 rotates.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a main body of the rescue equipment equipped with the fixing device of the present invention, FIG. 2 is a plan view showing an example of the fixing device of the present invention,
3 is a sectional view taken along the line ■-■ in FIG. 2, FIG. 4 is a sectional view taken along the rule line showing the second pulley device, FIG. 5 is a side view of FIG. Figure 6 shows VI- of Figure 5.
A view taken along line VI and FIG. 7 are plan views showing the hook. In the drawings, 1 is a rescue equipment main body, 6 is a storage box, 8 is a fixed ring, 9 is a fixing device, 10 is a connecting fitting, 11 is a first pulley device, 12 is a second pulley device, 13 is a rope, and 14 is a rope 15 is a hook, 17 is a first pulley body, 18 is a pulley, 24 is a second pulley body, 27 is a primary pulley, 28 is a secondary pulley, 30.31 is a ratchet wheel, 33.34 is a ratchet pawl It is.

Claims (1)

[Scope of utility model registration request] An emergency rescue bag that allows a person to descend into the rescue equipment body with the upper end of the cylindrical rescue equipment main body fixed to a building and the lower end fixed to a base outside the building,
A first pulley device is formed by attaching a pulley to a first pulley body to which a connecting fitting connected to the lower end of the rescue equipment body is rotatably attached, and a hook connected to a fixed end laid on the base. It is attached to the second pulley body, and two pulleys, a primary and secondary pulley, are pivotally supported on the second pulley body, and a ratchet wheel is fixed to at least the secondary pulley so that the ratchet wheel meshes with the ratchet wheel and the secondary pulley is attached to the second pulley body. A second pulley device is formed by attaching to the second pulley body a ratchet pawl that prevents reversal and a pawl that presses the cable against the secondary pulley to prevent the secondary pulley and the cable from slipping; wraps the cable fixed to the first pulley body from the primary pulley of the second pulley device, through the pulley of the first pulley device, and around the secondary pulley of the second pulley device, with the other end of the cable being a free end; A fixing device for an emergency rescue bag, characterized in that the lower end of the rescue bag is fixed to the base by pulling out the free end and bringing the first pulley device and the second pulley device closer together.