JPH0228930Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention can be used at department stores in the event of an emergency such as a fire outbreak.
Relating to emergency evacuation equipment for evacuating from high-rise buildings such as hotels by using cords such as ropes to support the body on the lowering gear and utilizing the frictional resistance between the descending gear and the ropes. .

A variety of rope-type descending devices have been proposed as a means of escaping from high-rise floors in the event of a fire, etc., but all of them are equipped with brake drums and various other methods to safely control the descending speed. Because of the complicated braking mechanism involved, even if you try to use this device especially in an emergency, the braking device etc. will be rusted and will not work.
There are many cases where it is of no use. This is because, due to the nature of this type of escape device, it is left unused for a long period of time, causing the above-mentioned inconvenience, and even if thorough maintenance is carried out, an escapee cannot install it. This is because it is impossible to use it unless you are familiar with the location and how to use it. Furthermore, the device is large and has restrictions on where it can be installed, and is also expensive, making it impossible to install it in each room, for example.

The present invention was developed in view of the above points, and its purpose is to provide a simple and compact structure at low cost, easy to operate, no equipment malfunctions, and a space-saving device. The object of the present invention is to provide a practically advantageous rope lowering device that can be easily placed anywhere without any trouble.

The gist of the rope lowering device of the present invention for achieving this purpose is that it consists of two U-shaped friction bodies, one large and one small, and more specifically, each of them protrudes in the same direction from the upper and lower ends of vertical rods that are parallel to each other. Cable insertion holes are formed at the free ends of the installed horizontal rods, and by changing the size of the distance between the vertical rods with the wires inserted into these insertion holes, the horizontal position of the insertion holes can be adjusted. is changed to increase or decrease the bending and sliding resistance at the end of the insertion hole of the cord.

Next, a case where an embodiment of the present invention is used as a descending device for emergency escape will be described based on the drawings.

As shown in Figure 1, the descending device of the present invention is basically a single rope having a length sufficient to reach the ground or other descending position from an elevated position such as the top of a structure or each level thereof. It consists of three members: a string 1, a large friction body 2, and a small movable friction body 3.

As shown in FIGS. 2 to 4, the friction body 2 and the movable friction body 3 are formed by vertical rods 2a and 3a, respectively, and a pair of upper and lower horizontal rods that are integrally bent from both upper and lower ends to one side laterally. 2b, 2b', 3b, 3b' and further holes 2c, 2c', 3c, for passing the strings formed at the free ends of the horizontal rods.
The movable friction body 3 is formed in a U-shape with a vertical and horizontal rod, and the vertical and horizontal rods of the movable friction body 3 are short in the rod length direction. It is formed in the shape of a U, which is one size smaller than the letter.
Specifically, the distances l ₁ and l ₁ between the opposing horizontal rods of both friction bodies 2 and 3 are approximately equal to the diameter of the rope 1, and the distance l ₂ between the vertical rods 2a and 3a is the distance between the movable friction bodies 2 and 3. The free ends of the horizontal rods 3 are at least connected to the insertion holes 2c, 2 of the friction body 2.
It is formed with a size sufficient to be able to be displaced toward the vertical rod 2a side than c', and each of the insertion holes 2c, 2c', 3c, 3
A cable is inserted into c' in advance.

Further, the vertical rods 2a, 3a of both friction bodies 2, 3 are flattened on their opposing sides, respectively, and grips 4, 5 are provided with concave and convex grooves in a wavy shape when viewed from the side so that they can be easily gripped with the hands and prevent the hands from slipping. (Fig. 4).
The grips 4 and 5 are made of rubber or synthetic resin, but the grips may be formed by processing the vertical rods themselves, if necessary.

The body hanging ring 6 is integrally attached to the horizontal rod 2b' below the friction body 2, and is used to lock the body hanging tool A formed of a rope, band, or the like.

Reference numeral 7 denotes a wrist hanging ring integrally attached to the horizontal rod 2b above the friction body 2, which locks the wrist hanging tool B formed of a rope, band, or the like. Further, reference numeral 8 denotes locking devices such as hooks attached to both the upper and lower ends of the rope.

The descending tool of the present invention having the above configuration is used in the following manner. First, as shown in Figure 5A, the escapee turns the body hanging device A from the armpit to the back, and also passes either the left or right wrist through the wrist hanging device B.
Engage the locking tool 8 at the upper end of the rope 1 with a suitable position on a structure, etc., and further grasp the grips 4 and 5 of both friction bodies 2 and 3 with both hands, so that the vertical rod 3a of the movable friction body 3 The evacuee is brought into contact with the vertical rod 2a, and in this state, the escapee applies his weight to the descending tool. However, the insertion holes 2c, 3c, 2c', 3c' of both friction bodies are relatively displaced, and the string 1 is inserted in a meandering manner through each of the through holes 2c, 3c, 3c', 2c'. This causes bending and sliding resistance, and the sum of this bending and sliding resistance and the frictional resistance that occurs between the cable 1 and the peripheral wall of the insertion hole exceeds the weight of the escapee, and the descending gear This prevents the escapee from descending rapidly without resistance while remaining stationary in a fixed position. Next, from this state, the lowering tool is performed, but the grip force on grips 4 and 5 is slightly loosened. As a result, the movable friction body 3 is pulled by the string 1 and slightly displaced toward the free end of the horizontal rod of the friction body 2 (leftward in the figure), and as a result, the insertion holes 2c', 3c', 3
The degree of bending of the rope 1 between c and 2c becomes slightly looser, and therefore the bending and sliding resistance is slightly weakened, and the weight of the escapee overcomes the sum of the bending and sliding special resistance and the frictional resistance, and the descending gear is lowered. When the user starts descending along the cable 1 and further loosens the grip as shown in FIG.

The present invention has been described above with reference to one embodiment. For example, as shown in FIG.
3c and 3c' have an opening 9, and a movable retaining piece 10 is attached to the opening to close the opening with spring pressure, so that the escapee can engage the descending gear with the rope 1 at the scene. You can also leave it there. Further, as shown in FIG. 7, a screw shaft 11 is integrally provided from the upper and lower center of the vertical rod 3a of the movable friction body 3, and this screw shaft 11 is connected to the vertical rod 2 of the friction body 2.
A wing nut 13 is inserted into the through hole 12 formed in the upper and lower center of a and screwed into the part that protrudes outward, and by rotating the wing nut 13, the amount of lateral displacement of the movable friction body 3 can be adjusted. It is also possible to adjust the degree of bending of the striations 1 by adjusting. Further, from the horizontal rods 2b, 2b' of the friction body 2, the horizontal rods 3b, 3 are directed toward the horizontal rods 3b, 3b' of the movable friction body 3 facing each other.
If substantially U-shaped guide members 14, 14' that can be fitted and guided by b' are provided in succession, the movable friction body can be displaced in the lateral direction even more smoothly. Furthermore, as shown in FIG. 8, at least one of the upper and lower ends of the vertical rod 2a of the friction body 2 is provided so that the distances l ₂ and l ₂ between the opposing horizontal rods can be adjusted appropriately according to the diameter of the striation 1 used. An adjustment mechanism 15 may also be provided. Specifically, the vertical rod 2a and the horizontal rod 2b are constructed separately, and a threaded portion 16 of an appropriate length is formed at the free end of the vertical rod, and this screw is fitted into the base end of the horizontal rod. A pair of upper and lower wing nuts 1 provided with a through hole 17 and screwed into a threaded portion 16
8 and 18', the base end of the horizontal rod is clamped and fixed from above and below at a desired position. In this case, although not shown, it goes without saying that the U-shaped fitting grooves 14a, 14a' of the guide members 14, 14' must be formed slightly longer in the vertical direction. In addition, the descending gear of this invention can be used not only for emergency evacuation, but also in a variety of situations, such as descending from a rocky mountain, etc., or descending from a helicopter suspended in the air. It can also be used by holding one in each hand, tightening and loosening the grip on the left and right alternately, and sliding it down like an inchworm.

Furthermore, instead of or in combination with the body hanging device A, it is also possible to use a net bag D made of string, wire, etc., as shown by _the imaginary line in Figure ₁ . It is secured to the body hanging ring 6, and half of the body is placed inside this net bag D for use.

As is clear from the above description, the cable lowering device according to the present invention has a major structural feature in that it is basically composed of two large and small friction bodies each having a U-shaped outer shape. Therefore, the structure is extremely simple, and it can be made much lighter and smaller than conventional devices, and it is also easy to manufacture and process at a very low cost. In addition, it is easy to install one in each room of a hotel or building, and it does not require a large installation space.For example, as shown in Figure 9, wastebaskets C can be inserted into and removed from each other in double-layered ways. It can be housed and installed using C ₁ , and there is no need for maintenance or inspection. In addition, it is easy to handle and operate when descending, and even someone without mechanical knowledge can easily operate it and descend safely, and its practical value is great.

[Brief explanation of the drawing]

Figure 1 is an explanatory side view showing the descending device of the present invention in use, Figure 2 is a partially omitted side view of the entire descent gear, Figure 3 is its plan view, and Figure 4 is the middle of Figure 2. - Line sectional view, Figure 5A is a partially omitted side view of the whole when the descending tool is stopped, Figure B is a partially omitted side view of the whole when it is lowered, and Figures 6 to 8 are respectively A modified example is shown, FIG. 6 is an enlarged plan view of the main part, and FIG. 7 is an enlarged plan view of the main part.
Figures 8 and 8 are partially omitted side views of the entire device, Figure 7B is a cross-sectional view taken along the line 1--2 in Figure 9, and Figure 9 is an explanatory diagram showing an example of the storage state. Explanation of symbols, 1...Ring, 2...Friction body, 3...
...Movable friction body, 2a, 3a...Vertical rod, 2b, 3b
... Upper horizontal rod, 2b', 3b' ... Lower horizontal rod, 2
c, 2b', 3c, 3c'...Insertion hole, 6...Body hanging ring, A...Body hanging tool.

Claims (1)

[Scope of claims for utility model registration] (1) Two large and small U-shaped friction bodies 2,
3, its horizontal rods 2b, 2b', 3b, 3
Cable insertion holes 2c, 2c', 3 are provided at the free end of b', respectively.
c, 3c' are provided, and the vertical rods 2 of both friction bodies 2, 3 are provided.
By changing the size of the distance l ₁ between a and 3a, the amount of lateral displacement between the insertion holes of both the friction bodies 2 and 3 is changed, and the insertion hole 2c for the cable to be inserted through both the friction bodies 2 and 3 is changed. , 3c, 2c', and 3c' end bending and sliding resistance can be increased or decreased. (2) The distance between the vertical bars of both the large and small friction bodies 2 and 3 is changed by protruding from the vertical bar 3a of the small friction body 3 toward the vertical bar 2a of the large friction body 2, and drilling into the vertical bar 2a. Utility model registration claim No. 1, which can be achieved by changing the relative amount of screw engagement between the screw shaft 11 inserted through the provided through-hole 12 and the nut 13 screwed into the outwardly protruding portion of the screw shaft 11 Cable lowering device as described in section. (3) The large friction body 3 has a threaded portion 16 formed at one end of the upper and lower ends of the vertical rod 2a, and a through hole 17 formed at the base end to fit the base end of the horizontal rod 2c into the threaded portion 16.
and a threaded portion 1 to hold the base end from above and below.
Utility model registration claim (1) comprising a spacing adjustment mechanism 15 for changing the vertical spacing between the horizontal bars 2b, 2b', which are made up of two nuts 18, 18' screwed together with the nuts 18, 18'. or a rope lowering device as described in paragraph (2).