Motion Translation Assembly for Axial Piston Actuation
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Solution Overview
Problem
Existing fluid dispensers face issues with non-axial forces applied to piston elements, leading to leakage and pump failure, and require separate mechanical arrangements for linear piston movement, which complicates the design and functionality.
Innovation Solution
A bridging element is introduced between a pivoting lever and a linearly sliding slide element, with camming surfaces that guide the bridging member to translate arcuate motion into linear motion, ensuring forces are applied parallel to the piston's movement axis, thus preventing leakage and simplifying the design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If arcuate motion of a lever is directly applied to a piston element, then the piston element can be moved, but non-axial forces are applied causing leakage and pump failure
Solution Approach 1:
A bridge member is introduced as an intermediary component between the lever and the piston element. This bridge member includes a camming surface that converts the arcuate motion of the lever into linear motion of the piston, while ensuring forces are applied axially to prevent leakage and failure.
2Reliability
If separate mechanical arrangements are added to guide the piston element linearly, then linear movement is ensured, but device complexity increases
Solution Approach 1:
The guiding function and motion transmission function are merged into a single bridge member. The camming surface on the bridge member simultaneously guides the piston element to move linearly and transmits the motion from the lever, eliminating the need for separate guiding mechanisms.
Solution Approach 2:
The bridge member serves multiple functions: it transmits motion from the lever, guides the piston element to move linearly, and ensures axial force application. This multi-functional component simplifies the overall device structure while maintaining reliability.
Data Source
AI summary
A simplified arrangement for the translation of movement as, for example, arcuate movement as from a lever into movement which is different as for example, in a linear direction with a slide element preferably comprising a piston in a piston pump. In accordance with a preferred aspect, the present invention provides a bridging element which is disposed intermediate a pivoting lever and a linearly sliding slide element with the bridging member being retained in engagement with camming surfaces having an arcuate portion at a constant distance from the pivot axis of the lever and tangentially merging into a linear portion which is parallel to a longitudinal axis along which the slide element is slidable. The bridging member is slidable relative to the camming surface with the bridging member deforming to assume the shape of the camming surface where the bridge member engages the camming surface. Movement of the lever about the pivot axis moves a first end of the bridge member in an arcuate path where it engages the arcuate portion of the camming surfaces and moves a second end of the bridging member connected to the slide element in a linear direction along the linear portion of the camming surfaces.