| 摘要 |
An air filter has a housing, a filter core, a resilient abutting element, a sleeve, a threaded rod bracket, a threaded rod and a nut. The axial sealing is achieved by axially compressing the resilient abutting element, such that the user does not have to apply much physical effort to compress the resilient abutting element. The user can easily push the filter core into the housing, and then rotates and tightens the nut, which can axially compress the resilient abutting element. It is easy to apply force on rotating the nut, and better still, the nut can be rotated by an electric tool, which further facilitates the convenience in assembling. Besides, the nut only abuts the sleeve, and the threaded rod bracket does not abut the filter core. Consequently, the filter core is not blocked, thereby making the air smoothly pass through the filter core. |
| 主权项 |
1. An air filter comprising:
a housing having
an accommodating space;an inlet communicating with the accommodating space;an outlet communicating with the accommodating space; anda first stepped surface formed annularly around an inner wall of the housing; a filter core mounted in the accommodating space of the housing, and having
a through hole formed axially through a center of the filter core; andan outer diameter bigger than an inner diameter of an inner periphery of the first stepped surface of the housing; a resilient abutting element annularly formed on a periphery of an end surface of the filter core that is adjacent to the outlet, transversely and axially wrapping said periphery, and axially abutting the first stepped surface of the housing; a sleeve mounted in the through hole of the filter core, and adhered to a hole wall of the through hole; a threaded rod bracket mounted securely in the accommodating space of the housing, and disposed between the filter core and the outlet; a threaded rod mounted securely on the threaded rod bracket, and axially mounted through the sleeve; and a nut mounted around and screwed on the threaded rod, axially abutting the sleeve in a direction toward the outlet, such that the resilient abutting element axially and tightly abuts the first stepped surface of the housing via the sleeve and the filter core to axially seal a gap between the first stepped surface and the filter core. |
