JPH0211599Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an emergency ladder. Previously, this inventor proposed an emergency ladder that is an improved version of the rope ladder that is mainly used at the scene of accidents such as fires, and this is shown in Figure 1.
As shown in Fig. 2, two sets of long tapes (flat strings) 1 and 1', which serve as the main tapes, and one set of short tapes 1'' are combined and alternately left and right with respect to one main axis XX.
And while creating triangle a by moving up and down sequentially,
At the base positions of these triangles, tapes 1 and 1'' are sandwiched between plates 2 and 3 from above and below, and tightened and fixed with fastening fittings 4 such as screws to serve as footboards. In this case, the tapes 1, 1', and 1'' are tightened together using a tightening fitting 5 to maintain a triangular shape, and this was created in conjunction with the fact that tightening fittings are often used due to the large number of triangles. This will be time consuming and costly,
Also, the bond between the tapes due to the metal fittings tends to be weak. Furthermore, since the base of the triangle is fastened and fixed with metal fittings using a footboard, it is bulky and poses a problem in movement and storage. On the other hand, this emergency ladder can be used not only for fires, but also to store it in the trunk of your car and use it to escape to the general road below in the event of an accident on an elevated expressway, etc. With this trend, it is also necessary to consider the use of emergency ladders as a towing body instead of a towing cord in the event of a car accident. It's here.

To this end, assuming that the emergency ladder would be subject to a traction load of approximately 2 tons, we reduced the number of tapes used by making each piece of strong tape (flat string), and minimized the joints between the tapes. Also, do not use metal fittings such as screws to connect the tapes;
In other words, it is necessary to use a sewing machine or the like to sew it directly with strong thread. For this reason, Jikko 51-
The device described in No. 43675 was proposed, but in this case, the pipe was used so that it could be moved freely by simply inserting it into the radial part of the belt, so it was somewhat unstable to put weight on, and it caused a sense of anxiety to the user. Giving is important. Furthermore, when weight is added to the pipe, a strong force is applied to pull apart the sewn parts, making it difficult to make them last long.

Taking these points into consideration, this idea uses a shaping plate with three holes instead of such an unstable pipe, and when weight is applied to it, the tape passed through these three holes in the shaping plate becomes firm. It can be tied to form a stable base, and it also has a hole that has a tapered surface that becomes larger as it goes downward, and a protective patch for sewing the tape that is placed just below the shaping plate. It naturally holds strongly against the added weight, and the shaping plates and sewing protection parts are made of hard synthetic resin plates, synthetic rubber plates, or metal plates, and the shaping plates have one and two plates near each end. Open a total of three tape widths and pass the tape (flat string) through these holes to form the base of the triangle.
When not in use, the tape is simply passed between the shaping plate and the tape, and there is no fixed part, making it easy to fold, and when in use, the sewn part is pulled apart by the weight of a person. In order to improve the force applied to the sewn part, the protective pad 11 is provided with a hole that becomes larger downwardly in order to cover the sewn part, thereby strengthening and protecting the sewn part and stably holding the orthopedic plate. Three holes 6a, 6b, 6
By passing the tape through c, the shaping plate and the tape are firmly connected during use, making it extremely easy to manufacture and simplifying the structure.

Also, in order to conveniently use the ladder according to this invention as a towing body for a car, a margin of about 1.2 m is provided between the triangular ends of the ladder and the tape end, and this part is used to attach the metal fitting 10 or tape to the loop. It is better to use one made with 9.

Next, the emergency ladder of this invention will be explained with reference to the embodiment shown in the figure. Figures 3a and 3b are front and side views of the shaping board 6 that serves as a footboard, which is a rectangular board made of hard synthetic resin or synthetic rubber, and has a first hole 6a at one end.
It has a second hole 6b provided slightly near the center and a third hole 6c provided on the other side, and a left or right auxiliary tape 7b, from above, is inserted into the third hole 6c.
7c, and below this shaping plate 6, the left or right auxiliary tapes 7b, 7c are supported, and the lower ends of the left or right auxiliary tapes 7b, 7c are inserted into the first hole 6a together with the main tape 7a. It is designed to be passed through from above, and the width and thickness of the hole are made wide so that t ₁ >t as shown in Figure 3a, in order to reinforce the hole and make it easier to squeeze. I tried increasing the number of holes in various prototypes, but it only weakened the shaping plate itself and there was no point in connecting it, and I found that three holes were sufficient for connecting the tape and the shaping plate, and sometimes it was better than two holes. Good results were obtained. Next, the lower end of the left or right auxiliary tape 7b, 7c is attached to the right or left auxiliary tape 7c, 7b forming a lower stage on the main tape 7a.
The sewn portion 8 is sewn together with the upper end, and the sewn portion 8 is covered with a sewn protection pad 11 having a hole 11a in the center forming a tapered surface that becomes larger from the top to the bottom. One end of the plate 6 is supported from below. This protective pad 11 is shown in FIGS. 3c, d, e, and f, and the auxiliary tape 7
By folding b and 7c, the thickness is increased to make it easier for the sewn part 8 to fit in, and as weight is added to the shaping plate 6, the sewn protection part 11 protects and strengthens the sewn part, and the shaping plate 6 is It can be held stably and has a long lifespan.

Note that the tapes 7b and 7 forming the uppermost triangle
Only a is shown as a sewn part 8', and the other sewn parts 8
The tapes 7a, 7b, and 7c are sewn on.

Figures 4 and 5 show tape 7 on shaping plate 6 in Figure 3.
Fig. 6 is a schematic side view of the ladder formed in this way. In the figure, 7a is the main tape of the ladder, which extends over the entire length and also serves as one side of the triangle.One example is a tape made of chemical fiber that is used as a tape (flat string), and is very strong and weighs about 2 tons. Sufficiently withstands loads.
7b or 7c is an auxiliary tape that forms only one side of the triangle and also forms the base or step when combined with the shaping plate 6, and is made of the same material with the same width and same thickness as the main tape 7a, and is used to a length of about 65 cm. It is convenient.

Thus, the main tape 7a covers the holes 6a of each shaping plate 6.
The tape 7b or 7c is passed through the hole 6a from the bottom to the top in order to form one triangular piece at a time, while the tape 7b or 7c is passed through the hole 6a from the bottom to the top, and then passed through the hole 6a.
After passing the tapes 7b and 7c downward from above and then upward through the holes 6c, both ends of the tapes 7b and 7c are sewn to the main tape 7a at the top and bottom positions of a triangle 8, 8'. Ru. In addition, when sewing is fitted into the hole 11a which is larger as it goes below the protective pad 11, and when weight is applied to the shaping plate 6, the shaping plate 6 is firmly held by the protective pad 11, so it is stable. Also, the other end of the shaping plate 6 is attached to the left or right auxiliary tape 7.
It will be supported by the tension of b or 7c, and hole 6
The left or right auxiliary tape 7b or 7c will be passed through the left or right auxiliary tape 7b or 7c at three locations a, 6b, and 6c, ensuring stable tension and retention of the left or right auxiliary tape 7b or 7c against the shaping plate 6. It also holds sagging stitches.

In this way, as shown in Figure 6, the emergency ladder is used as a scaffold by moving up and down alternately on the left and right with the main tape 7a as its main axis, sequentially creating a large number of triangles, which are used as scaffolding, and has a total length of 5 m.
About 14 triangles are made with this ladder. In addition, a metal fitting 10 is attached to the top end of the ladder, and a ring 9 is made with tape to the bottom end, and when the car is towed by a support vehicle when the car is in an accident and becomes immobile, the metal fitting 10 is connected to one end of the vehicle to be towed. In order to connect it to the car towed from behind, it is connected with a joint ring 9, and a white 30cm mark is attached in the center.
All you need to do is hang a square bag of about 100 lbs., and when using it as an emergency ladder, attach the square bag to the bottom and apply luminous paint or the like to warn other cars. Ring part 9 for joint
It can also be used by connecting it to the ring part 9 of another ladder to make it even longer. When not in use, the emergency ladder can be easily folded and stored in this square bag, making it very convenient to carry.

As mentioned above, with this invention, it is possible to obtain an emergency ladder that can also be used as a vehicle traction device, and in particular, no assembly work is required to form triangles to be used as scaffolding, and each triangle is created separately. Prepare one shaping plate 6 and protective pad 11 and drill three holes 6.
A, 6b, 6c are opened in this shaping plate, the tapes are passed through, the tapes are sewn together, and the sewn parts are fitted and covered with protective pads, and the connecting fittings are completely eliminated. In particular, to establish the triangular tread, the tensioning and sewing of the shaping plate, protective pad, and tape are used, so there are no restraining parts between the tape and the shaping plate, and it is easy to store in the square bag mentioned above, making it portable. Very convenient.

[Brief explanation of drawings]

1 and 2 are side views and partially enlarged slope views of the emergency ladder previously proposed by this inventor, and FIGS. 3a and 3b are front and side views of the shaping plate 6 according to this invention, c, d, e, and f are partially cutaway slope views, top views, bottom views, and slope views of the protective pad 11, and Figures 4 and 5 are partial side views of the emergency ladder according to this invention.
FIG. 6 is a schematic diagram of the same. In the figure, 6 is a shaping plate, 7a, 7b, and 7c are tapes (flat strings), 8 is a sewn part, 9 is a ring, 10 is a stopper, and 11 is a sewn protection pad.

Claims (1)

[Scope of utility model registration request] The main tape 7a is used as a main axis, and a plurality of left and right auxiliary tapes 7b and 7c are used as treads to support the base, and a large number of triangles are made alternately on the left and right to be used as a ladder.
A shaping plate 6 having a second hole 6b provided slightly near the center and a third hole 6c provided on the other side.
, pass the left or right auxiliary tape 7b, 7c from above through the third hole 6c, so that the left or right auxiliary tape 7b, 7c supports the lower part of the shaping plate 6, so that the left or right auxiliary tape 7b, 7c Pass near the lower end through the second hole 6b from below, then pass the lower end of the left or right auxiliary tape 7b, 7c together with the main tape 7a through the first hole 6a from above, and pass the left or right auxiliary tape 7b, 7c from above through the first hole 6a. Main tape 7a at the bottom end
Right or left auxiliary tape 7c, 7 forming the lower tier
A sewn protection pad 11 is sewn together with the upper end of b, and has a hole 11a in its center that forms a tapered surface that becomes larger from the top to the bottom of the sewn portion 8.
This emergency ladder is covered with a protective pad 11 and one end of a shaping plate 6 is supported from below.