Fluid Dispensing Head Transmission Part Design
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Solution Overview
Problem
Conventional fluid dispenser heads with rotary and axial displacement pushers face issues due to the deformation of flexible conduits, leading to reduced flexibility and increased costs when overmolding is used to address this problem.
Innovation Solution
A fluid dispenser head design that eliminates the flexible conduit by incorporating a transmission part between the pusher and the dispensing endpiece, allowing for selective interposition in the operative position, with actuating means driving the pusher and endpiece in rotation without rotating the transmission part, enabling axial displacement without axial rotation of the transmission part.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a flexible conduit is used to connect the dispensing orifice to the pump, then the pusher can be driven in rotation and axial displacement, but the flexible conduit deforms and forms folds that prevent fluid circulation
Solution Approach 1:
The patent removes the flexible conduit from the system entirely. Instead of connecting the dispensing orifice to the pump through a flexible conduit, the invention uses a rigid dispensing member with an integrated fluid passage that extends from the pump outlet directly to the dispensing orifice, eliminating the conduit and its associated deformation problems
Solution Approach 2:
The dispensing member is divided into distinct functional segments: the pump mechanism, the rigid dispensing body with integrated fluid passage, and the dispensing orifice. This segmentation allows each component to perform its specific function without the need for flexible connections, while maintaining structural integrity and reliable fluid circulation
2Ease of operation
If the flexible conduit is deformed to accommodate pusher rotation, then the pusher can be actuated, but the conduit lacks flexibility and requires overmolding which increases cost
Solution Approach 1:
The patent eliminates the flexible conduit that requires expensive overmolding. By using a rigid dispensing member with an integrated fluid passage, the invention removes the need for complex multi-material molding processes, significantly reducing manufacturing cost while maintaining ease of operation
Solution Approach 2:
The fluid passage is merged directly into the dispensing member body, creating an integrated structure that eliminates the need for separate flexible conduits. This consolidation simplifies the manufacturing process and reduces the need for expensive overmolding operations
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The invention relates to a fluid material dispensing head to be mounted on a fluid material tank (1) to form a dispenser, the head including: a fluid material dispensing member (2) that includes a body (21) and a valve rod (22); a dispensing nozzle (6) rotatably mounted onto the valve rod (22); a rotatable push member (8) for moving the dispensing nozzle (6) and the valve rod (22), the head further including: a transmission part (7) inserted between the nozzle (6) and the push member (8), the part being axially movably secured to the push member (8); an actuating means (3, 4, 5) that rotates the nozzle (6) and the push member (8) but not the transmission part (7), the actuating means (3, 4, 5) axially moving the part (7) between an inoperative storing position and an operative actuating position so as to cause the axial movement of the push member (8), the part (7) directly and axially transmitting any force exerted on the push member (8) to the nozzle (6) in the operative position.