Inlet device for central vacuum system

Abstract

The present invention consists of or includes an inlet device, of the valve type, used in a Central Vacuum System (CVS) and built into the skirting board, namely in the kitchen of a house. The function of the device is to collect dust and small debris with the aid of a broom into the entrance of this CVS, by means of a micro-switch activated CVS mechanism located in the skirting board, so as to avoid the use of a vacuum cleaner or vacuum tube also connected to the CVS. The device can comprise: a base body which can be assembled on the wall at the height of the skirting board; a cover which engages in the base body; an unlocking button which disengages the cover; a sealing strip which is glued to the base body; a micro-switch which engages in the base body; a helical torsion spring engaged in the cover, by means of a pin, which causes the cover to open in relation to the base body. By pressing the unlocking button the user causes the opening of the cover, which activates the micro-switch, which, in turn conveys an electric signal to the CVS so that it stars to vacuum.

1 . Inlet device for Central Vacuum System built into the skirting board to collect dust and small debris from the floor, comprising:
 a base body which shape is essentially parallelepipedic, without the rear and lower sides, which has a nozzle projecting in its back face for connection to the Central Vacuum System from said nozzle up to the back face of the base body, which has a channel with a shape which allows to pass from the circular shape of the nozzle to the shape of the inlet of the rubbish, further has locking means of the body, has at the top of the inner face of the base body pivoting means of the body, which allow the pivoted fixation of a cover, also has two fixation holes in order to allow to hold the device to the wall and one hole for placement of the micro-switch, whereby its contact with the cover provides an electric signal to supply a command signal to the said Central Vacuum System;   a cover which shape is essentially parallelepipedic, without the anterior side, which engages pivoting means of the body through pivoting means of the cover, has means of fixation of the spring with the support for the respective pin of the spring, in that the said spring under pressure causes the opening of the cover, also has locking means of the cover which, when the cover is in the closed position, are engaged to the locking means of the body;   an unlocking button, slidably engaged to the locking means of the cover, which when pressed by the user will push the locking means of the body until the connection is released;   a sealing strip placed on the back face of the cover, in a position in which, with the cover in the closed position, completely seals the exit of the channel.   
   
   
       2 . The device according to  claim 1 , wherein the lower face of the cover has two notches in the passage of the fixation holes for the installation of the device already totally assembled at the intended place. 
   
   
       3 . The device according to  claim 1 , wherein the back face of the base body lies at the face of the wall when the device is installed. 
   
   
       4 . The device according to  claim 1 , wherein the locking means of the body to hold the cover in the closed position have two projections for engagement of the locking means of the cover and are placed in the back face of the base body, preferably between the said channel and the top of the base body. 
   
   
       5 . The device according to  claim 1 , wherein the lateral faces of the base body have a small slope upwards at the lower part. 
   
   
       6 . The device according to  claim 1 , wherein the cover has a protuberance, placed in the back face of the cover at mid-height, that forms a stop when said cover is opened by the unlocking button and stops in a recess located in the base of the through hole in the base body. 
   
   
       7 . The device according to  claim 6 , wherein the through hole has the shape of the protuberance section to allow said protuberance to go through the base body when the cover is closed.