ES2214101A1 - Door closing device for machine, has rollers provided with parallel axes attached to frame and support part, and rod whose passage is fixed to door, where rod is exceeded to obtain locked state, and peripheral notch is coupled with O-rings - Google Patents

Abstract

The device has rollers (4, 4') provided with parallel axes attached to a frame (2), a door support part (3), and a passage (6) of a rod (5) fixed to a door (1), where the rod is exceeded to obtain a locked state. The rollers are structured around a core for fixing the rollers to the support part by a screw (8). A peripheral notch is coupled with O-rings that are mounted on a rigid ring (11). Non-metallic elements avoid appearance of sparks.

Description

Anti-vibration door closing device or similar, specially adapted for machines.

Object of the invention

The present invention relates to a device closure that has been specially designed for machines in that vibratory effects are generated that tend to open uncontrolled and unwanted doors, hatches and other elements Similar.

The object of the invention is to achieve a closure keep the door or item in question, in the corresponding closing situation, despite the movements Vibrators generated in the machine.

Background of the invention

In many machines it is common for the chassis or support structure of its mechanisms is assisted by doors or cover hatches, which are properly maintained isolated said internal mechanisms, for security reasons or For any other cause.

Usually said doors or hatches, in forward and generally "door", theoretically maintain stable closing situation through different types of devices, sometimes using magnets, sometimes using snap closures, etc.

These closures are effective in practice. when the machine chassis remains static, but when this is subjected to vibrations, as is frequent, such vibrations make the fixing means, either magnets, tongue and groove couplings, pressure couplings, etc., yield at a certain moment producing the unwanted opening of the doors.

On the other hand, the mechanisms involved in Door closures are usually metallic, which originates on numerous occasions, due to the rubbing or contact of the same, sparks that can be dangerous and that prevent use of said closures in high content atmospheres in Gas or flammable.

Description of the invention

The closure device proposed by the invention solves the problem fully satisfactorily previously exposed, absorbing the vibrations generated by the machine, and consequently, keeping the position of closure of any of its doors with respect to corresponding frame or chassis.

To do this and more specifically, said device materializes in a pair of rollers conveniently attached to the chassis or any other suitable area of the machine, such as the door frame to be locked in closing situation, radial and elastically deformable rollers, of parallel axes, which define each other a wide passage considerably smaller than the diameter of a stem in turn sympathetic to the door to be locked, so that said rod, during the closing maneuver of the door, it must pass through said rollers, with the consequent elastic deformation of the same, and after exceeding them is stabilized, by elastic recovery of the rollers, which press said rod against any surface or stopper element such as the own door frame, where appropriate the machine chassis, etc.

More concretely each of the aforementioned rollers is structured by a tubular core, so that through its hollow interior is the corresponding fixing screw to chassis or machine frame, core provided with a pocket or perimeter throat in which the less an o-ring, preferably several, that act as elastic dividers for a wrap and tight ring, which is on which the aforementioned stem associated with the door, causing a radial displacement of said ring through the elastic deformation of the o-rings.

Likewise, to avoid the problems that would involve the appearance of sparks due to friction and contact of the different metallic elements of the device, the constituent elements of the device that are recommended to be subjected to various contacts and friction, are made of non-metallic elements.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows a representation schematic side elevation of a closing device anti-vibration for machine doors made in accordance with the object of the present invention.

Figure 2.- Shows a detail in profile and in device section of the previous figure.

Preferred Embodiment of the Invention

In the figures outlined, specifically in the Figure 1, a certain practical embodiment has been represented in which a door (1) has to close on a frame (2), and of according to the invention said frame (2) has been fixed conveniently a support plate (3), for fixing of said pair of rollers (4-4 '), elastic and radially deformable, so that said rollers (4-4 ') are conveniently spaced between yes and distanced from the frame (2), to allow location between these elements of the closing rod (5), in turn Solidarity at the door (1), a rod that of the opening position will show a continuous stroke in figure 1, you must go to the closing situation shown in dashed line in said figure.

This displacement of the stem (5), through the passage or space (6) defined between the rollers (4-4 '), must be carried out against deformation elastic of such rollers, for which purpose the said diameter stem (5) is considerably larger than the width of the passage (6), as also appears from the observation in figure 1.

Each of these rollers (4-4 '), is structured from a core (7), hollow, for passage of a screw (8) fixing to the support (3) or to any other base piece like the one in figure 2 reference with (3 '), said core (7) having a recessed or perimeter recess (9) in which an axially retained pair of o-rings (10) on which it is mounted in turn tightly a wrap ring (11) of a hard material, of so that it is these rings (11) that configure the aforementioned step (6) and those who receive the action of the stem (5), which causes a separating them against the elastic formation of O-rings (10) until the closing limit situation is reached shown in dashed line in figure 1, in which closing situation remains stable against vibrations of the machine, which are absorbed by the repeatedly cited together Toric (10).

In this way a closure of extremely fast and simple drive, with great stability, which maintains the closing situation even when it is subjected to a high level of vibration

In addition, and as previously mentioned, those elements subject to various contacts and friction are They are made of non-metallic elements to avoid problems that would involve the appearance of sparks.

Claims (3)

1. Anti-vibration closing device for doors or similar, specially adapted for machines, whose purpose is to keep the door stable in a closed situation with respect to the complementary frame or fixed structure, is characterized by being constituted by a pair of rollers (4- 4 '), with parallel axes, elastic and radially deformable, intended to be conveniently fixed to the frame or support structure of the door, defining among them a passage (6) for a rod (5) in turn destined to join the door ( 1), so that the closing situation is reached by exceeding said rod, the passage defined between the rollers (4-4 ') by elastic deformation and subsequent recovery thereof. 2. Anti-vibration closing device for doors or the like, especially adapted for machines, according to claim one, characterized in that each roller (4-4 ') is structured from a hollow core (7) for fixing to the corresponding support by means of a screw (8), core (7) provided with a perimeter recess or recess (9) for coupling preferably a pair of o-rings (10) on which a rigid ring (11) is fitted tightly, so that the rings rigid (11) corresponding to the pair of rollers (4-4 '), are those that define the passage (6) for the rod (5) associated with the door. 3. Anti-vibration closing device for doors or the like, especially adapted for machines, according to previous claims, characterized in that those elements that are subject to contacts and friction are made of non-metallic elements in order to avoid the appearance of sparks.