ROTATING DISC-TYPE BAROMETER AND TYRE INFLATOR PUMP HAVING SAME

摘要

A rotating disc-type barometer (100) and a tyre inflator pump having the barometer (100). The rotating disc-type barometer (100) is provided with a core body (110) and an indicator disc (118); the core body (110) is provided with a cavity (112), an inlet (113), a spring (114), a piston assembly (115), a movement rod (116) and a driving part (117). One end of the cavity (112) is the inlet (113) and the other end of the cavity (112) is an outlet. The movement rod (116), the spring (114) and the piston assembly (115) are all arranged in the cavity (112). The movement rod (116) is provided with a movement end (1161) and a driving end (1163). The piston assembly (115) is fixedly arranged at the movement end (1161) and the piston assembly (115) is in seal fit with the internal wall surface of the cavity (112). The driving end (1163) of the movement end (116) protrudes out of the cavity (112) from the outlet and is partly exposed out of the cavity (112). The driving end (1163) cooperates with the driving part (117). The driving part (117) drives a pointer of the indicator disc (118) to rotate. The spring (114) is sleeved on the movement rod (116) and the two ends of the spring (114) are abutted with the piston assembly (115) and the outlet end of the cavity (112) respectively. The rotating disc-type barometer and the tyre inflator pump having the barometer are simple in structure and have high pressure detection precision and low cost.