Fluid Dispenser Rigid Insert Piston Spray Profile
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Solution Overview
Problem
Existing fluid dispensers, particularly nasal sprayers, face manufacturing and assembly complexities due to the need for multiple parts and modifications to the dispensing head, which increases costs and can alter the spray profile geometry, affecting spray quality.
Innovation Solution
A dispensing assembly with a single-piece rigid insert and piston that forms the spray profile, where the shutter is integral with the piston and slides within it, allowing for mechanical actuation independent of product pressure, reducing parts and maintaining spray profile geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shutter and spray profile are added to the dispensing head, then the dispensing function is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The shutter (40) and spray profile (20) are integrated into a single piece with the dispensing head body (11), eliminating the need for separate components. This merging reduces assembly complexity while maintaining the dual functions of product control and spray generation.
Solution Approach 2:
The integrated component serves multiple functions simultaneously: the shutter portion controls product flow while the spray profile portion generates the spray pattern, and both are formed as one piece with the dispensing head body, reducing the total number of parts required.
2Reliability
If a shutter is added to close the dispensing orifice, then the sealing capability is improved, but the manufacturing cost and assembly complexity increase
Solution Approach 1:
The shutter (40) is formed as an integral part of the dispensing head body (11) through a single molding process, eliminating the need for separate manufacturing and assembly steps. This integration maintains effective sealing while significantly reducing manufacturing cost and assembly complexity.
3Adaptability or versatility
If multiple separate parts are used to form the dispensing head, then the functionality is improved, but the assembly complexity and cost increase
Solution Approach 1:
The dispensing head is formed as a single integrated piece containing the shutter (40), spray profile (20), and body (11) functions, eliminating the need for assembly of multiple separate parts while maintaining all required functionalities for product dispensing and spray generation.
Solution Approach 2:
The single-piece construction incorporates multiple functions within one component: the shutter portion for product control, the spray profile portion for spray generation, and the body structure for support, thereby reducing assembly complexity while maintaining full functionality.
Data Source
Figure 1~3
Figure 4~5
AI summary
The invention relates to a fluid product dispensing assembly that comprises a pump (50) comprising a pump body (52) and at least one first piston (51) sliding sealingly within said pump body (52) between a non-dispensing position and a dispensing position, a spraying head (10) mounted on said pump (5) and manually moveable between a rest position in which said first piston (51) is in a non-dispensing position, and an actuation position in which said first piston (51) is moved towards its dispensing position, said spraying head (10) comprising a body (11) defining an expulsion channel (12) and provided with a dispensing port (1), the body (11) of the spraying head comprising upstream from said dispensing port (1) a spraying profile for spraying the fluid product when dispensing the same, said spraying head (10) comprising a rigid insert (30) provided upstream from said spraying profile and having an end surface that defines at least partially the bottom of said spraying profile, said rigid insert (30) being connected to the first piston (51), and said first piston (51) being fixed relative to said spraying head (10).