ES1075985U - Fixed ceiling ladder extensible interchangeable modules integrally plastic (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Extendable fixed ceiling ladder of interchangeable modules, entirely plastic, of the extendable or bellows type with a staircase box characterized by the fact that it is constituted by a structure of removable or replaceable modules, which are the connecting rods (5, 6, 7), the rungs (10), and the rollers (8 and 9). The connection of the connecting rods with the rungs is made up of pins (11 and 12). (Machine-translation by Google Translate, not legally binding)

Description

Fixed modular ladder ladder fully plastic interchangeable.

Object of the invention

The present Utility Model application it consists, as indicated in its statement, on a roof ladder fixed, extensible-retractable, whose characteristics structural, formal and functional fulfill the objective to which has been projected.

The objective is to fulfill the function of the that this type of stairs is destined, ascent or descent to premises higher or lower, respectively, providing, as a novelty, a practically appreciable advantage for its use and manufacturing, derived from its structure, constitution and configuration, with the use of a novel material for this typology.

Background of the invention

Making an analysis of the state of the art, it is observed that there is an extendable ladder type, housed and anchored in a box attached to the building site on the ground or roof, depending on its use, to descend to lower premises or ascend to higher floors, in this way the whole, when is out of use, that is to say fully collected, with the modules collected, does not occupy space or cause traffic discomfort on floors or ceilings, in addition, to have flip tops on their faces upper and lower, a compact set remains without danger of accidents or inconvenience of space in floors and ceilings.

The main advantage of this type of stairs it is the space saving we get with your installation, since its structure allows it to be hidden when its utilization, and at the same time provides convenient access to the stay.

This typology of extensible stairs and retractable, takes time in the market, with proven effectiveness as for its operation, being able to be of sliding sections or of scissors that fold, telescopic, etc., thus varying their collection or extension systems. Currently, for its manufacture, traditional materials are being used such as wood, which is the most classic, or metals.

The disadvantage of using wood is related to its durability and resistance.

The wood presents instability against the humidity, while limiting its design to sections (usually 3), They fold over themselves.

Metal ladders tend to be more durable and resistant, and allow a more functional collection design, being in the market telescopic collection stairs, of scissors, etc.

As for the metals that are being used, the main advantage of plastic over iron would be the no corrosion, is lighter, allows colors; with respect to Aluminum would be the least weight, the colors and the lowest cost.

Both have the disadvantage of their weight, a point to consider considering that the collection and extension of The ladder is done manually.

The advantage that it represents is also observed for certain designs, currently on the market, the possibility of replace damaged or damaged parts with your own use, making the complete replacement of it necessary.

Explanation of the invention.

In order to solve these problems, a stair typology is developed based on those currently on the market, adding to this the usefulness or practical advantage of being made entirely of plastic material, whose evolution in the last twenty years, optimizing its use, makes it a strong, durable, versatile, lightweight and economical material, and increasingly present in the global industry. The recycling possibilities offered by this material make it possible to use sustainability discourse with considerable solven-
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The advantage of this invention is that being made entirely of plastic materials would allow its transport and installation in a simple way due to its lower weight compared to a conventional ladder.

Weight reduction is an important point to take into account considering that the collection and extension of the Ladder is done manually.

The molding of the pieces in plastic material allows a shot without live edges suitable for handling of the stairs.

The set that is explained below basically constitutes a folding and folding ladder, type bellows, housed and anchored in a box that is fixed to the work of the real estate, in a hole practiced in the plane of separation between a lower and upper floor. Said gap has a certain thickness, which in turn corresponds to the height of the box, which It allows the staircase itself to be housed inside it. This set, when not in use, that is to say fully folded, does not occupies space, or causes traffic discomfort on floors or roofs

The ladder box is closed, in its part bottom with a flip top on which the ladder that It is extended or collected as it is to be used or stored.

The ladder will have fixed anchorage on one side of the box and a fixed anchor with folding arm over the lid Bottom folding.

The ladder itself will be composed, basically on two sides between which the "steps", both will have the configuration or appropriate structure to the plastic material that is projected.

Each side consists of a certain number of elements, as many as necessary to shape the height Total of the stairs. These elements that we will call "connecting rods", they will be rigid and elongated, allowing an articulated union with each other and with the elements that we will call "rungs". The form and the section of the "connecting rods" will be such that they can resist Work efforts to which they will be subjected. Iran linked together by its central part and its ends, through joints that allow the turn, making the whole of the staircase Fully foldable and foldable, making a type configuration bellows and therefore perfectly collected inside the stair case, thus forming the compact set before aforementioned.

The joint that allows connecting the connecting rods by its central part will also be the one that allows the subjection of rungs to the sides through through connectors of form and dimensions appropriate to its function.

So that the "steps" can vary your tilt during the folding of the ladder your fit the star-shaped "connecting rods", having spike in the center of each "connecting rod" closest to the "step" on both sides of it, and emptied on both side of the "step". Given the modular nature of these pieces are also expected that the "steps" are removable, to facilitate the replacement of damaged or damaged parts by own use.

The staircase ends at the bottom in shorter "connecting rods" to which small wheels will be attached. The wheels located on the front allow the support of the ladder on the ground preventing it from scratching. Those located in the back allow the ladder to rest in position out of use, on the horizontal flip top attached to the hinged box.

The modular nature of this staircase allows replacing parts and adapting the total height of the ladder to the distance between floor and ceiling of the place where you will be staying.

The "steps" would be non-slip, and the whole set, especially the "connecting rods", would be screened with fiber reinforced plastic mixtures ensuring its resistance structural. The shape and molding would be designed to increase such resistance.

Description of the drawings

For better understanding of the description attached drawings are attached, by way of example, not limiting, the embodiment of the invention.

Figure one.-

Perspective view of the box set and ladder in position of use or deployed.

Figure 2.-

Perspective view of the joint detail between the sides of the stairs composed of the "connecting rods" simple and with gear, and the "steps", attached to these last in its midpoint through through connectors. I also know observe the union of the connecting rods with each other. This configuration allows the folding.

Embodiment of the invention

According to the attached figures you can it should be noted that, in a preferred embodiment, the device is formed by two main components a box ladder holder and the folding ladder that is housed in the box.

1.- Ladder box

Constituted by a rectangular frame (1), received at the building site, in a hole in the plane of separation between a lower and an upper floor. Saying hollow has a certain thickness, which in turn corresponds to the box height, which allows the staircase to be properly accommodated said within it. The ladder box is closed, in its bottom with a "flip top" (2) on which it is fixed the ladder that extends or picks up as it will be used or save.

The ladder will be attached to the box by two "support brackets" (3), which will be fixed on one side of the same.

Also, the ladder will be held by two "holding arms" (4), foldable on the cover itself (2) of the ladder box (1), when the ladder is in out of use or folded position.

2.- Extensible ladder

Composed of two sets of "connecting rods" (5), (6), (7), among which the "rungs" will be inserted, Each one of the two sets of "connecting rods" (5), (6), (7) will be formed by a certain number of elements, as many as they are necessary to conform the total height of the stairs. The "connecting rods" (5), (6), (7) will be rigid and elongated, allowing an articulated union with each other and with the elements that we will call "rungs" (8). The shape and section of the "connecting rods" (5), (6), (7) will be such that they allow work efforts to resist those that will be submitted. Iran joined together by its central part and its ends, through joints that allow the rotation, making that the whole of the ladder is fully foldable and drop down

Three types of cranks are projected: one type of "single rod" (5), located on the outside of the side, another type of "connecting rod with gear" (6), located closest to the step, in the same way and length and that in relation to the previous differs by having a star-shaped insert which allows the support of the step. Finally the type of "connecting rod auxiliary "(7), of shorter length than the previous ones, to which they will hold small casters. The "casters" (8) located in the previous part they will be supportive on the ground and the "casters" (9) located at the back will be supportive on the lid when the ladder rests in the position outside use, on the "flip top" (2), when it is closed.

The "steps" (10) will be embedded in the "connecting rods" (6), located on each side, by "through connectors" (11), which, in turn, hold each other, the "simple connecting rods" (5), with the "connecting rods" (6). The "connecting rods" (5), (6), (7), will be attached to each other, in their ends by "pins" (12). The "pins" (11), (12), they will function as joints that allow rotation, causing the whole staircase, being fully foldable and Foldable, it is perfectly collected inside the box staircase holder

It is about the protection of plastic material (new), with which this object is conceived, provided that it is choice modifies its qualities, producing a better use or result in the function to which it is intended.

The shapes, dimensions and other details accessories are independent of the object of the invention, being able to be replaced by technically equivalent ones, as long as do not depart from the essentiality of the present invention, nor from the inventive concept of it.

Claims (2)

1. Stable fixed roof ladder of interchangeable modules entirely plastic, of the extendable type or bellows with ladder-holder box characterized by the fact that it is constituted by a structure of removable or replaceable modules, which are the connecting rods (5, 6, 7) , the steps (10), and the casters (8 and 9). The union of the connecting rods with the steps is formed by pins (11 and 12). 2. Expandable fixed roof ladder with interchangeable modules, entirely plastic, according to the 1st claim characterized by the fact that it is made entirely of plastic material.