ES1291129U - Easy -release clamping device. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Easy -release clamping device, specially designed for plastic bags, consisting of a manually practicable practicable clamp applied traction on the object itself. (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

Easy release clamping device

Technical sector

The present invention must be framed in the field of simple mechanical devices, and more specifically linked to the field of street furniture.

And it consists of a clamp designed to hold the lower part of the garbage bags placed in certain bins, located outdoors, and prevent the wind from inflating them by inverting their position, and thus throwing their contents outside.

Background of the invention

On public roads and other open spaces (parks, schoolyards, car parks, etc.) in most of the developed world there are a large number of litter bins installed to collect small-sized waste that is usually generated during the journey or stay in these areas by the population (disposable tissues, wrappers, dog droppings, etc.), and thus prevent said waste from ending up on the ground or in garden areas.

In most cases, these litter bins do not have a closure or lid, and are also built with a type of perforated metal plate or grid, which favors, when the wind reaches a certain intensity, that the bottom of the rubbish bags placed in its interior, and subject only by its upper part to the mouth and without an excessively heavy content, it rises and shoots upwards, throwing its content abroad and thus spreading its content. In other words, due to a design problem, in certain circumstances these litter bins aggravate the problem of dirt and contamination that they should help to solve.

Logically, this situation would be easily resolved by reforming the litter bins (by covering their walls with a material that does not allow the passage of wind), or discarding them to replace them with new and different ones. But both options, taking into account the large number of installed units, would imply a very high economic cost. The possibility of not using bags is also ruled out due to the hygiene problems that would be generated in the bins themselves and in the collection of waste by the corresponding operators, in addition to the fact that this would not prevent light-weight paper and plastic from leaving flying in strong winds.

Faced with this situation, some people responsible for managing this waste (normally municipal staff) have opted for ineffective or problematic solutions such as weighing down the bags with stones on windy days. And there is also a project known for a fastening device based on a battery of slats joined at the top by a kind of belt that coincides with the mouth of the litter bins that would be inserted vertically into the bags at each replacement, but would be permanently in contact. with the garbage, and could be conspicuous and dangerous for children playing in parks and squares.

In other words, to date there is no known effective and affordable solution to the problem of wind-driven rubbish bags, which also does not entail any other type of inconvenience.

Explanation of the invention

The invention object of the present application consists of a simple and discreet device, of low cost, that holds a point of the lower part of the garbage bags placed in bins outdoors to prevent them from turning over due to the force of the wind, and the consequent content dispersion. For its final design, factors such as ease of manufacture, assembly and installation, the shape and size of the aforementioned bins, the type of bags used and, above all, the way in which the operators carry out the removal and their replacement. The risks that it could pose to users and bystanders, especially the younger ones, have also been assessed.

The device consists of a clamp formed by two main bodies, upper (1) and lower (2), arranged with their concave faces facing each other, and joined by a screw as an axis (3), fastened in turn with a conventional nut. , on which one of them tilts to achieve the opening movement (by manual pressure) and closing, which is executed by the tension exerted by a double spring (4) arranged between them and attached to the shaft itself.

For correct handling, the rear part of the upper face extends into a flush tab with an ergonomic shape that acts as a button (5), while the rear part of the lower face has two perforated side flaps (6) that allow the fixation by means of screws of the clamp to the inner walls of the litter bin in which it is installed, preferably in the bottom area, in a vertical position.

The clamp ends with two rollers (7) with projections as rotation axes (8), placed transversely at the front ends of the two faces in holes provided for this purpose, contacting each other in the closing position, and which, by way of of lips, they hold an end of the bag previously inserted between them, preventing the force of the wind from lifting it, but allowing it to be extracted without tearing when it is pulled uniformly from the top, when said rollers rotate by friction before that pulling force .

In this way, the device never comes into contact with the rubbish, since it is installed outside the bag, but it does remain hidden and without contact with passers-by inside the bin. And the personnel in charge of garbage collection only have to put their hands in the bins when they have already been emptied, to catch a lower end of the new bag, thus avoiding the risk of contact with hazardous waste (sharp or punctured).

Brief description of the drawings

In figure 1 you can see a complete clamp, with all its elements.

Figure 2 shows, in profile, the clamp in the closed position (A) and open by pressing the button (B), waiting for the end of the bag to be inserted.

Figure 3 is a detail of the front part where the rounded finish (9) of the ends of the rollers can be seen.

Figure 4 shows the possibilities of adapting the fastening flaps (6) to the walls (10) of the litter bins, depending on whether they have a greater or lesser curvature.

Preferred embodiment of the invention

It is expected that the main bodies of the clamp will be formed by folding previously cut and perforated metal sheets (laser cutting), as it is a very widespread procedure today. The rollers, however, must be manufactured with injected material (plastics) in specific moulds, since turning cylindrical rods to achieve the desired shape would make the parts excessively expensive and slow down their production.

The springs, in order to achieve optimum strength, are made of metallic wire with the necessary thickness, while the connecting axis of the two faces and the rest of the screws can be standard hardware items.

It should be noted that the ends of the rollers will be duly rounded to avoid edges that could tear the bags when pulling them out, and that the fastening flaps on the underside may appear completely horizontal with respect to the base of the bag (extensions at 0 degrees), or slightly bent upwards, by means of creasing lines made for this purpose, to allow correct coupling to litter bin walls with different degrees of curvature. Both details are collected in the claims of this application.

Claims (3)

1. Easy-release clamping device, specially designed for plastic bags, consisting of a manually operable clamp whose trapping area is made up of two rollers (7) that allow the extraction of the clamped object without damaging it by yielding with its rotation before the traction applied on the object itself. 2. Fastening device with easy release, according to the previous claim, characterized in that the ends of the trapping rollers are finished with a rounded shape (9), without edges, to specifically prevent the fastened bags from tearing when pulling them for their removal. extraction. 3. Fastening device with easy release, according to previous claims, characterized in that in the joining areas between the fastening flaps (6) and the body from which they arise, slit lines (11) have been provided that allow them to be folded in order to be able to adapt to curved walls (10).