| 摘要 |
The present invention enables a vibration isolation spring, which is suitable for vibration isolation of an operation unit in an expansion valve, to obtain functions and be formed in a small size. The expansion valve includes a shaft (33) transmitting operating power of the operation unit to a valve body and the vibration isolation spring (50) installed between the body and the shaft (33) and supplying sliding resistance with the shaft (33). The vibration isolation spring (50) includes a cylindrical main body (52) in which the shaft (33) can be inserted; a spring unit (54) supported on the main body (52) in a cantilever form; and a swelling unit (56) protruding to the opposite side to the shaft (33) of the spring unit (54). As the penetrated shaft (33) and the swelling unit (56) are in contact with each other, the spring unit (54) is curved to the outside of the main body (52) or the position according to the main body (52), and sliding power can be applied to the shaft (33) by an elasticity reaction. |
