Pump Assembly and Container With Contents Discharge Function
AssigneeNubiz Plastic (Nantong) Co., Ltd.
InventorWei ZHU
Life of this patent
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Abstract
A pump assembly comprises a pump main body having a first cavity and a press rod. The press rod has a rod body and a piston portion in which the rod body is slidably provided in the first cavity in a penetrating manner and one end thereof extends out of the first cavity. The piston portion is connected to the rod body and is located in the first cavity to divide it into a first gas cavity and a second gas cavity, one or more of which are sealed cavities. Since the piston portion can rebound under the resultant force of a gas pressure in the gas cavities, the pump main body does not need a spring for rebounding the rod body. Accordingly, the pump assembly can be entirely made of a plastic material, and no metal material is mixed, so the pump assembly is easily recycled.
Claims10
A pump assembly adapted to be mounted on a container body, which comprises a pump main body and a press rod, wherein the press rod has a rod body and a piston portion;
- the pump main body has a first cavity;
- the rod body is slidably provided in the first cavity in a penetrating manner, and one end thereof extends out of the first cavity;
- the piston portion is connected to the rod body and is located in the first cavity so as to divide the first cavity into a first gas cavity and a second gas cavity, wherein the first gas cavity and/or the second gas cavity are sealed cavities;
- the rod body is configured to be pressed to drive the piston portion to expand the first gas cavity and compress the second gas cavity;
- and the piston portion is configured to rebound under the action of the resultant force of a gas pressure in the first gas cavity and a gas pressure in the second gas cavity, so as to drive the rod body to rebound, such that the rod body is adapted to be re-pressed.
Dependencies are inferred from the claim text.