Oil Nozzle

Abstract

An oil nozzle includes an oil sucking tube, an oil filling tube, and an extending tube unit. The oil sucking tube and the oil filling tube are coupled to the extending tube unit. The extending tube unit includes a first tube and a second tube. The first tube intercommunicates with the oil sucking tube. The second tube intercommunicates with the oil filling tube. The first tube is received in the second tube.

What is claimed is: 
     
         1 . An oil nozzle comprising an oil sucking tube, an oil filling tube, and an extending tube unit, with the oil sucking tube and the oil filling tube coupled to the extending tube unit, with the extending tube unit including a first tube and a second tube, with the first tube intercommunicating with the oil sucking tube, with the second tube intercommunicating with the oil filling tube, and with the first tube received in the second tube. 
     
     
         2 . The oil nozzle as claimed in  claim 1 , with the extending tube unit further including a connecting member having a first opening, a second opening, and a third opening, with the first, second, and third openings intercommunicating with each other, with the oil sucking tube having an end coupled to the first opening, with the oil filling tube having an end coupled to the second opening, with the second tube having an end coupled to the third opening, and with the first tube extending through the third opening to the first opening to couple with the end of the oil sucking tube. 
     
     
         3 . The oil nozzle as claimed in  claim 1 , with the first tube having an outer diameter, with the second tube having an inner diameter, and with the outer diameter of the first tube smaller than the Inner diameter of the second tube. 
     
     
         4 . The oil nozzle as claimed in  claim 3 , wherein the first tube and the second tube have a gap therebetween, and wherein a fluid is adapted to flow through the gap. 
     
     
         5 . The oil nozzle as claimed in  claim 1 , wherein the oil sucking tube and the oil filling tube are bendable and deformable hoses, and wherein the first and second tubes are rigid tubes. 
     
     
         6 . The oil nozzle as claimed in  claim 2 , wherein a length of the first tube beyond the third opening is larger than a length of the second tube beyond the third opening. 
     
     
         7 . The oil nozzle as claimed in  claim 1 , with the oil filling tube including a switch element and a stop plate, with the stop plate mounted inside the oil filling tube, and with the switch element and the stop plate operable to control opening or closing of the oil filling tube. 
     
     
         8 . The oil nozzle as claimed in  claim 7 , with the switch element including a partitioning board and a control end, with the control end adapted to receive a control signal, with the switch element operable to move the partitioning board towards or away from the stop plate to control opening or closing of the oil filling tube. 
     
     
         9 . The oil nozzle as claimed in  claim 1 , with the oil filling tube further including a check valve, and with the check valve only allowing flow of the fluid in a direction away from the first tube. 
     
     
         10 . The oil nozzle as claimed in  claim 1 , further comprising an actuation switch for generating an actuating signal, with the actuation switch including an electrical connecting portion, and with the actuating signal adapted to be transmitted through the electrical connecting portion to an outside of the oil nozzle.