Rotating Actuator Switching Mechanism for Dual-Channel Dispensing
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Solution Overview
Problem
Existing dispensing devices lack a simple and cost-effective mechanism for switching between output channels, leading to complex assembly and increased component count, which complicates the dispensing of products in various forms and spray patterns.
Innovation Solution
A dispensing device with an axially engaging actuating part and a self-sealing switching part that allows for separate production and simple assembly, featuring a dispensing head with two output channels that can be easily switched by rotating the actuating part, which also blocks the other channel to prevent unwanted dispensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional switching mechanism is used to switch between output channels, then the dispensing device can dispense products in different forms and spray patterns, but the device complexity and component count increase, leading to complex assembly and higher costs
Solution Approach 1:
The actuating part combines multiple functions: it serves as both the actuator for opening the dispensing valve and as the switching mechanism for selecting between first and second output channels. The actuating part rotates about the axis of the actuation element, with different rotational positions (0° for first channel, 180° for second channel) directing the product flow to different channels, thereby merging actuation and channel switching into a single component and motion.
Solution Approach 2:
The actuating part is designed as a multi-functional component that simultaneously performs valve actuation, channel switching, and sealing functions. It includes an actuation element for opening the dispensing valve, outlet openings for switching between channels, and sealing surfaces for blocking channels when not in use. This universal design eliminates the need for separate switching components, reducing device complexity while maintaining versatility.
2Adaptability or versatility
If multiple separate components are used for switching between output channels, then the switching function can be achieved, but the number of components increases, making assembly more complex and costly
Solution Approach 1:
The invention merges the actuating part and switching mechanism into a single integrated component. The actuating part includes both the actuation element for valve control and the switching structure with outlet openings for channel selection. By combining these functions into one component rather than using separate actuator and switching components, the number of parts is reduced, simplifying assembly and lowering costs while maintaining the ability to switch between output channels.
3Device complexity
If the switching part is not self-sealing, then the structure can be simpler, but product may leak or foam from the blocked output channel
Solution Approach 1:
The actuating part incorporates localized sealing surfaces at specific locations: a first sealing surface that seals the first output channel when the actuating part is in the first position, and a second sealing surface that seals the second output channel when the actuating part is in the second position. These localized sealing features are integrated into the actuating part itself, providing reliable prevention of product leakage without requiring a separate self-sealing switching mechanism, thus maintaining structural simplicity while ensuring reliability.
Data Source
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AI summary
A dispensing device having two output channels (6) for selectively dispensing a preferably liquid product is proposed. In order to switch between the output channels (6), the dispensing device has a switching part (10) that can be rotated by means of an associated actuation part (9). A simple and cost-effective design is made possible by the fact that the actuation part (9) engages axially into the switching part (10), and the switching part (10) has a peripheral seal and is self-sealing.