Key-Plunger Cam Mechanism for Orthogonal Motion Transfer
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Solution Overview
Problem
Existing systems face challenges in transforming motion from one axis to another, particularly in applications where manual force is applied along one axis but needs to be effectively transferred to another axis, such as in safety controls, where disengaging or engaging a locking bolt requires efficient force transfer.
Innovation Solution
The apparatus and method utilize a key with a motivating arm featuring a displacement cam surface and a return cam surface to motivate a plunger along a second axis, enabling efficient motion transformation by converting linear key displacement and return motions into corresponding plunger displacement and return motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a manual or powered force is applied along one axis, then motion can be generated on that axis, but it cannot be effectively transferred to another axis
Solution Approach 1:
The patent introduces a cam mechanism as an intermediary component between the key and plunger. The cam surface converts linear motion from the key into perpendicular linear motion of the plunger, enabling effective force transfer between orthogonal axes through geometric transformation rather than direct mechanical coupling
Solution Approach 2:
The cam mechanism transforms motion from one dimensional axis to another dimensional axis. When the key moves along the first axis, the cam surface geometry transforms this motion into movement of the plunger along the second axis, effectively utilizing dimensional transformation to solve the force transfer problem
2Adaptability or versatility
If a cam mechanism is used to transform motion between axes, then motion transfer is enabled, but the device complexity increases
Solution Approach 1:
The motion transformation function is segmented into distinct components: the key with motivating arm, the cam surface on the motivating arm, and the plunger with interface. This segmentation allows each component to perform a specific function while maintaining overall system simplicity and ease of manufacture
Solution Approach 2:
The cam surface utilizes curved geometry to transform linear motion into perpendicular linear motion. The curved surface profile is designed to convert the linear displacement of the key into linear displacement of the plunger along a different axis, achieving motion transformation through geometric curvature rather than complex mechanical linkages
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively transfers motion from the first axis to the second axis, ensuring efficient and practical force application, suitable for safety control mechanisms by using a key and plunger system with cam surfaces to facilitate motion transformation.
Implementation Method 1
The motivating arm includes a displacement cam surface disposed on a ventral side of the motivating arm... The plunger includes a displacement interface that is motivated by the displacement cam surface in response to the key moving in the key displacement direction to motivate the plunger in a plunger displacement direction
Data Source
AI summary
For motion transformation an apparatus includes a key and a plunger. The key moves along a first axis in a linear key displacement direction and along the first axis in a linear key return direction that is opposite the key displacement direction. The key includes a motivating arm on a distal end. The motivating arm includes a displacement cam surface disposed on a ventral side of the motivating arm and a return cam surface disposed on a dorsal side of the motivating arm. The plunger moves along a second axis. The plunger includes a displacement interface that is motivated by the displacement cam surface in response to the key moving in the key displacement direction to motivate the plunger in a plunger displacement direction. The plunger further includes a return interface.