To provide an attachment structure of a modulator tank and a female screw member easily according positions of a refrigerant passing hole of the modulator tank and a communication hole of the female screw member in a modulator tank formed into a cylindrical cross section.
The female screw member 20 forming a female screw 21 is installed in one end of the modulator tank 10 formed into the cylindrical cross section. The female member 20 has a small diameter part 23, a large diameter part 24, and a level difference surface 25 formed therebetween. The small diameter part 23 is formed with the long communication hole 22 along the horizontal direction in a position accorded with the discharge side refrigerant passing hole 14 of the modulator tank 10, and the large diameter part 24 is formed with a flat part abutting on a positioning tool 27 in the orthogonal direction to the communication hole 22. The level difference surface 25 regulates the insertion depth position and, after female screw member 20 is inserted into the modulator tank 10, the tool 27 is made to abut on the flat part 26 to stop the rotation.
KATO JUNJI
SANADA RYOICHI
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