Trigger Dispenser Head Segmentation for Leak-Proof Assembly
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Solution Overview
Problem
Existing manually operated dispenser devices face challenges in easy assembly due to asymmetric or offset inner components and leakage issues, which affect their economic production and user experience.
Innovation Solution
A dispenser device design featuring a pre-assembled dispenser head with an auxiliary body and frame that includes eccentric liquid and air aspiration ducts, a piston mechanism, and reinforcement structures to ensure easy assembly and effective sealing, preventing liquid leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If asymmetric or offset inner components are used in the dispenser device, then the device can achieve more functional versatility and improved liquid dispensing performance, but the assembly process becomes more difficult and time-consuming
Solution Approach 1:
The dispenser head is divided into separate modular components including the auxiliary body, frame, piston assembly, and sealing elements. Each component can be manufactured independently and assembled in a standardized sequence, reducing the complexity of handling asymmetric parts while maintaining functional versatility.
Solution Approach 2:
A standardized intermediate coupling structure is introduced between the asymmetric internal components and the external housing. This intermediary interface provides alignment features and mounting points that simplify assembly, allowing the asymmetric components to be integrated without increasing overall assembly complexity.
2Ease of manufacture
If conventional dispenser head designs are used, then the assembly process is simpler, but liquid leakage occurs during transport and use
Solution Approach 1:
Sealing elements and gaskets are pre-installed and pre-positioned on the auxiliary body and frame components during manufacturing. This preliminary action ensures that sealing surfaces are properly prepared before final assembly, preventing leakage while maintaining assembly simplicity through standardized sealing interfaces.
Solution Approach 2:
Flexible sealing membranes and elastomeric gaskets are used to create leak-proof barriers at critical interfaces. These flexible sealing elements can accommodate minor dimensional variations and assembly tolerances, ensuring reliable sealing without requiring complex assembly procedures.
3Ease of repair
If multiple separate components are used in the dispenser head, then assembly and disassembly become more difficult, but repair and maintenance are easier
Solution Approach 1:
The dispenser head is segmented into modular components (auxiliary body, frame, piston assembly, sealing elements) that can be independently accessed and replaced. This segmentation enables easy maintenance of specific components without requiring complete disassembly, while the modular design maintains assembly simplicity through standardized interfaces.
Data Source
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AI summary
A trigger dispenser device (1) for dispensing a liquid comprises a container (C) and a dispenser head (20). The head comprises a frame (22) having a pressure chamber (24) and a secondary liquid aspiration duct (50), and an auxiliary body (2) attached to the frame (22). The auxiliary body is provided with a primary liquid aspiration duct (8) and an air aspiration chamber (4b). Between the frame (22) and the auxiliary body (2) a merger compartment (64) is formed and the air aspiration chamber (4b) surrounds the merger compartment (64) so as to seal it.