Fixed Quantity Discharge Device With Segmented Suction Tube
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Solution Overview
Problem
Existing fixed quantity discharge devices for liquid containers face challenges in preventing pipette pipe contamination and minimizing residual contents, as they often require complex mechanisms involving springs and variable discharge amounts.
Innovation Solution
A device with a contents suction tube extending into the container body for pipette pipe insertion and withdrawal, and a piston that ascends as contents are consumed, combined with a simple button-ascend mechanism along a guide part for controlled content discharge without a spring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a pipette pipe is entirely inserted into the container body to discharge contents, then contents can be discharged, but the pipette pipe is contaminated by contents in the container body
Solution Approach 1:
The discharge system is segmented into two separate components: a contents suction tube that remains in the container body and a pipette pipe that is inserted only when needed. The suction tube has an opening at its lower end that extends into the container body, allowing it to suction contents without the entire pipette pipe being inserted. This segmentation prevents contamination of the pipette pipe while maintaining discharge functionality.
2Ease of operation
If a spring mechanism is used to restore the button part after contents usage, then the button can return to initial position, but the device structure becomes very complicated
Solution Approach 1:
The button part is designed to be restored automatically by the user's own action. When the user rotates the outer cap to detach it from the container body, the button part naturally returns to its initial position due to the rotational motion and structural design of the cap assembly. This eliminates the need for separate spring mechanisms or restoration devices, simplifying the overall structure while maintaining operational ease.
3Extent of automation
If the inner cap and button part are moved multiple directions for contents recovery, then contents can be sucked back, but the operation becomes complex requiring combination of inner cap and button part movements
Solution Approach 1:
The contents recovery function is integrated into the cap detachment action. When the user rotates the outer cap to detach it from the container body, the button part automatically moves to suction contents back into the container. This preliminary action combines the recovery function with the detachment motion, eliminating the need for separate recovery operations and reducing the number of steps required.
Data Source
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AI summary
The present invention relates to a fixed quantity discharge device for a liquid container, more specifically a fixed quantity discharge device for a liquid container which includes a contents suction tube extended into the inside of the container body for enabling a pipette tube to be inserted and drawn so as to make the lower end of the pipette tube be exposed to the contents, thus preventing contamination of the pipette tube, and a piston provided in the container body so as to rise as the contents are consumed, thus minimizing the residual contents in the container body.