Nozzle Cap Design for Compact Foam Discharge
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Solution Overview
Problem
Existing nozzle cap-equipped discharge containers have complex structures and increased height due to the need for valve mechanisms and gas-liquid mixing chambers, which complicates assembly and reduces responsiveness, and they struggle to maintain foam quality with compact designs.
Innovation Solution
A nozzle cap with a two-part structure, including a body part and a lid part, where the lid part forms the upper part of the nozzle cap and integrates with the body part to create a compact design, eliminating the need for a separate gas-liquid mixing chamber and using porous members mounted from above to mix and foam content liquid without compromising foam quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a valve mechanism and porous member are mounted in the longitudinal discharge flow passage, then the discharge container can foam content liquid by mixing with air, but the structure becomes complicated and the height increases
Solution Approach 1:
The patent merges the valve mechanism and porous member into the nozzle cap structure itself. The nozzle cap includes an integrated valve mechanism with a valve body and valve member, and the longitudinal discharge flow passage is formed within the nozzle cap with porous members embedded in its inner wall. This integration eliminates the need for separate mounting steps and reduces structural complexity while maintaining the foam discharge function.
Solution Approach 2:
The nozzle cap is designed as a multi-functional component that simultaneously serves as the discharge nozzle, housing for the valve mechanism, and support structure for porous members. The cap body integrates multiple functions: it forms the discharge opening, contains the valve mechanism for air intake control, and provides the longitudinal discharge flow passage with embedded porous members for foam generation. This multi-functionality reduces the number of separate components needed.
2Adaptability or versatility
If a valve mechanism is mounted to open and close the outside air intake port, then air can be taken into the container body, but the assembly steps and structure become complicated
Solution Approach 1:
The valve mechanism is merged into the nozzle cap structure, with the valve body forming part of the cap and the valve member integrated with the pressurization mechanism. The outside air intake port is formed directly in the nozzle cap, and the valve mechanism is positioned within the cap body. This integration allows the valve mechanism to be assembled as part of the nozzle cap manufacturing process rather than as a separate assembly step.
3Adaptability or versatility
If porous members are mounted in the longitudinal discharge flow passage, then content liquid can be foamed, but the height of the nozzle cap increases
Solution Approach 1:
The porous members are nested within the longitudinal discharge flow passage of the nozzle cap. The flow passage is formed as a cavity within the cap body, and the porous members are embedded in the inner wall of this passage. This nesting arrangement allows the porous members to be contained within the existing height of the nozzle cap rather than extending beyond it, maintaining a compact overall height while still providing the foam generation function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design simplifies the assembly and structure of the nozzle cap, reduces its height, improves responsiveness by instant pressure transmission, and maintains high-quality foam production without a gas-liquid mixing chamber, making the container more compact and cost-effective.
Implementation Method 1
a porous member, which foams content liquid while mixing the content liquid with air
Implementation Method 2
the container body, which has been deformed and reduced in volume, can return to an original shape
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A nozzle cap-equipped discharge container (10) includes a container body (11) that is to contain content liquid, and a nozzle cap (12) that is mounted on a mouth neck section (11a) of the container body (11) and includes a discharge section (13) discharging the content liquid fed by the pressurization of the inside of the container body (11). The nozzle cap (12) includes a longitudinal discharge flow passage (16) that sends upward the content liquid fed from the container body (11), and a tip-side discharge flow passage (17) that allows the longitudinal discharge flow passage (16) and the discharge section (13) to communicate with each other. The nozzle cap (12) includes a body part (12a) and a lid part (12b), and the body part (12a) includes the longitudinal discharge flow passage (16) therein. The lid part (12b) forms the upper part (20a) of a region including a portion directly above the longitudinal discharge flow passage (16), and the tip-side discharge flow passage (17) includes a flow passage that is formed by the body part (12a) and the lid part (12b).