Air pump with internal automatic controller
AssigneeDongguan Tiger Point, Metal & Plastic Products Co., Ltd.
InventorChun-Chung TSAI
Life of this patent
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Abstract
An air pump with internal automatic controller has a housing, and a low-pressure blower and a first auto-stop controller mounted in the housing. The first auto-stop controller has a first casing, a first air pressure sensing film, a pushing element, a swing rod, a connecting rod, a rotation restricting element, a first micro switch, a rotational pressing rod, and a first turning button. With the low-pressure blower inflating an inflatable article with low pressure air, and with the first auto-stop controller stably and reliably controlling the low-pressure blower, the low-pressure blower stops working automatically. The first auto-stop controller has simplified structure and inflates the inflatable article without manual work, which is a great convenience to users.
Claims10
An air pump with internal automatic controller comprising:
- a housing having
- a first air port;
- a third air port;
- and
- a first one-way valve mounted to the first air port;
- a low-pressure blower mounted in the housing and having a fourth air port communicating with the first air port;
- and
- a first auto-stop controller mounted in the housing and having
- a first casing;
- a first air pressure sensing film securely mounted in the first casing and dividing an interior of the first casing into a first chamber and a second chamber, the first chamber communicating with an exterior of the first casing, and the second chamber communicating with the third air port;
- a pushing element mounted in the first chamber and having a driven end protruding out of the first casing;
- a swing rod pivotally disposed outside the first casing and having
- a first end facing the driven end of the pushing element;
- and
- a second end;
- a connecting rod having two ends, and one of the ends of the connecting rod pivotally connected to the second end of the swing rod;
- a rotation restricting element pivotally disposed outside the first casing, and having
- a first end pivotally connected to the other end of the connecting rod;
- a second end;
- and
- at least one limit portion formed on the second end of the rotation restricting element;
- at least one restoring spring mounted on the at least one limit portion of the rotation restricting element;
- a first micro switch disposed outside the first casing;
- a rotational pressing rod rotatably disposed outside the first casing and having
- a pressing portion corresponding in position to and pressing against the first micro switch;
- and
- a positioning portion operating in coordination with the at least one limit portion;
- and
- a first turning button mounted on the housing via a torsion spring and disposed outside the housing, and the first turning button selectively driving the rotational pressing rod to rotate.
Dependencies are inferred from the claim text.