Pneumatic actuator with electrical position detector

Abstract

The invention consists of the combination of a pneumatic actuator part ( 1 ) and an electrical position detector part ( 2 ), the containing structures thereof sealingly combine along a contour edge ( 3 ), with the containing structure ( 8 ) of the electrical position detector part ( 2 ) contributing to implement the depression chamber ( 4 ) of the pneumatic actuator part ( 1 ) and inside thereof there is provided a small chamber ( 15 ) housing the resistive member ( 16 ), the thrust spring ( 19 ) and the head ( 17 ) of the sliding member bearing the electrical contacts ( 18 ) rubbing onto the resistance ( 16 ).

1 . A pneumatic actuator with electrical position detector to be used in the vehicles with inner combustion engines and in particular in adjusting and controlling the turbocompressor, comprising a pneumatic actuator part ( 1 ) and an electrical position detector part ( 2 ), characterized in that the containing structure ( 9 ) of the pneumatic actuator part ( 1 ) and the containing structure ( 8 ) of the electrical position detector part ( 2 ) sealingly combine between them along a contour edge ( 3 ) and in that the containing structure ( 8 ) of the electrical position detector part ( 2 ) implements the “vault” of the depression chamber ( 4 ) of the pneumatic actuator part ( 1 ).  
     
     
         2 . The pneumatic actuator with electrical position detector, as claimed in  claim 1 , characterized in that the containing structure ( 8 ) of the electrical position detector part ( 2 ) has on the inside thereof a small chamber ( 15 ) inside thereof the variable resistance ( 16 ), the head ( 17 ) with the contacts ( 18 ) rubbing onto the resistance ( 16 ) and the spring ( 19 ) positioned so as to oppose the sliding of said head ( 17 ) are housed.  
     
     
         3 . The pneumatic actuator with electrical position detector, as claimed in  claim 1 , characterized in that the small chamber ( 15 ) inside the containing structure ( 8 ) of the electrical position detector part ( 2 ) is closed on the lower part by a plug ( 31 ) equipped at least with a central hole for the sliding of the shaft ( 26 ) projecting from the head ( 17 ).  
     
     
         4 . The pneumatic actuator with electrical position detector, as claimed in  claim 1 , characterized in that the containing structure ( 8 ) of the electrical position detector part ( 2 ) has the spout ( 10 ) therethrough it puts into communication the outside with the depression chamber ( 4 ) of the pneumatic actuator part ( 1 ).  
     
     
         5 . The pneumatic actuator with electrical position detector, as claimed in  claim 1 , characterized in having a variable electrical resistance ( 16 ) with structure with feet buried into the moulded jet therewith the casing ( 8 ) of the electrical position detector part ( 2 ) is implemented and with the surfaces at sight therethrough the electrical connection with the rubbing contacts ( 18 ) is implemented.  
     
     
         6 . The pneumatic actuator with electrical position detector, as claimed in  claim 1 , characterized in that in the small chamber ( 15 ), inside the containing structure ( 8 ) of the electrical position detector part ( 2 ), longitudinal grooves ( 21 ) are placed for the positioning and the not-guided sliding at least of the head ( 17 ) with the rubbing contacts ( 18 ).  
     
     
         7 . The pneumatic actuator with electrical position detector, as claimed in  claim 1 , characterized in having a spring ( 19 ) sized so as to perform the thrust onto the head ( 17 ) sufficient to keep inside the chamber ( 4 ) the end of the shaft ( 26 ) in contact with the head of the extracting member ( 7 ).  
     
     
         8 . The pneumatic actuator with electrical position detector, as claimed in  claim 1 , characterized in that the containing structure ( 8 ) of the electrical position detector part ( 2 ) on the inside thereof has a surface shaped like a circular crown ( 11 ) thereagainst the spring ( 2 ) opposing the sliding of the cup-like structure ( 6 ) towards the containing structure ( 8 ) bucks when a depression is produced in the chamber ( 4 ).