Magnetic Coupling Actuation Mechanism for Zero-Power Indexing
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Solution Overview
Problem
Existing actuation mechanisms for one-way clutches and brakes lack efficient and power-efficient methods to control the movement of strut or coupling members between engaged and locked positions.
Innovation Solution
An actuation mechanism comprising a hub, latch member, translating member, indexer, and return member, which utilize a combination of cams and magnetic fields to move the coupling device between 'on' and 'off' positions with zero power consumption, using a stator to control the translating member and indexer rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If existing actuation mechanisms are used to control strut movement, then the coupling device can be actuated between engaged and locked positions, but the power consumption is high and efficiency is low
Solution Approach 1:
The patent replaces traditional mechanical actuation systems with a magnetic field-based actuation mechanism. The stator generates magnetic fields that interact with the translator to produce mechanical motion, eliminating the need for continuous mechanical power input and reducing power consumption while improving actuation efficiency.
Solution Approach 2:
The actuation mechanism uses periodic magnetic field activation to achieve the desired motion. The stator is activated in specific sequences to move the translator and indexer through discrete positions, allowing the system to achieve efficient actuation with intermittent rather than continuous power input.
2Ease of operation
If continuous power input is used to control the coupling device, then the strut can be moved between positions, but the system requires continuous energy supply
Solution Approach 1:
The system uses the rotational motion of the hub itself to drive the actuation mechanism. As the hub rotates, the indexer automatically progresses through its indexing positions, and the translator is moved by magnetic fields generated at appropriate times. This self-service approach eliminates the need for separate continuous power input while maintaining full control capability.
Solution Approach 2:
The actuation mechanism is designed to be dynamic rather than static, utilizing the rotational dynamics of the hub to drive the indexing and translation movements. The magnetic fields are activated dynamically based on the rotational position, allowing control without continuous power supply.
3Device complexity
If a simple actuation mechanism is used, then the device complexity is low, but the ability to achieve precise positioning and controlled transitions is insufficient
Solution Approach 1:
The actuation mechanism is segmented into distinct functional components: the stator for magnetic field generation, the translator for linear motion, and the indexer for rotational positioning. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity, achieving precise positioning through coordinated action of simple individual parts.
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
Enables efficient and power-efficient control of the coupling device between engaged and locked positions, facilitating smooth transitions without requiring continuous power input.
Implementation Method 1
utilize a combination of cams and magnetic fields to move the coupling device between 'on' and 'off' positions with zero power consumption, using a stator to control the translating member and indexer rotation
Data Source
AI summary
An actuation mechanism for use with a coupling device. The actuation mechanism includes an assembly having a hub, a latch member, a translating member, and an indexer. The assembly includes a carrier supported on the hub that engages the indexer. The carrier moves axially relative to the hub. A return member biasing the indexer to a non-deployed position, with the translating member acting against the return member to move the indexer to the deployed position.