Rotary adjustment controller of an air pump
AssigneeDongguan Tiger Point, Metal & Plastic Products Co., Ltd.
InventorChun-Chung TSAI
Life of this patent
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Abstract
A rotary adjustment controller of an air pump has a casing, a micro switch, an air pressure sensing film, and a control mechanism. The control mechanism has a bolt, a nut, and a turning button. The nut is screwed on the bolt. The micro switch is securely mounted on and moves along with the nut. The turning button selectively drives the bolt to rotate. With turning the turning button to rotate the bolt, the micro switch selectively departs from or approaches the air pressure sensing film. Positions of the micro switch are adjusted steplessly, so an inflatable article can be inflated to a desired hardness. The rotary adjustment controller has simplified structure and can be operated conveniently and rapidly.
Claims3
A rotary adjustment controller of an air pump comprising:
- a casing having an inner surface;
- a micro switch selectively switching a blower on or off;
- an air pressure sensing film mounted in the casing, selectively triggering the micro switch, and having
- an inner surface;
- and
- an outer surface facing and separated from the micro switch;
- a chamber surrounded by the inner surface of the air pressure sensing film and the inner surface of the casing;
- a control mechanism driving the micro switch to move toward or away from the air pressure sensing film, and the control mechanism having
- a bolt rotatably mounted outside the casing;
- a nut screwed on the bolt and being rotatable to move along an axial direction of the bolt;
- and
- a turning button connected to and selectively driving the bolt to rotate.
Dependencies are inferred from the claim text.