| 摘要 |
PROBLEM TO BE SOLVED: To reduce a weight and a material cost. SOLUTION: In the liquid receiver comprising a liquid receiver body 11 formed in a cylindrical state, a plug 20 inserted from a lower side opening (one opening) 111 of the body 11 to block the opening 111, and an O-ring (sealing means) 41 interposed between the plug 20 and the body 11, the plug 20 is constituted at a portion of an end side disposed inward the body 11 of a columnar portion 20b, and a part of the portion 20b to the base end side is constituted of a cylindrical portion 20a, thereby reducing a weight and a material cost. An O-ring groove (annular groove) 23 is provided on an outer periphery of the portion 20b, thereby forming the groove 23.
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