Rotating Seat Armrest With Non-Contact Power Transfer
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Solution Overview
Problem
Existing armrest technologies do not clearly indicate how to connect sockets and built-in equipment, requiring space for cable routing and integration, which can lead to cable damage when the armrest is rotated.
Innovation Solution
An armrest with a non-contact power transmission system using air core coils, where a power transmitter in the bracket transfers power to a power receiver in the armrest body member, eliminating the need for cable routing and maintaining a consistent magnetic field coupling during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cables are routed from the seat into the armrest to connect the socket and built-in equipment, then power can be supplied to terminal devices, but space for cable routing is required and cables may be damaged when the armrest is rotated
Solution Approach 1:
The patent replaces the mechanical cable connection system with a non-contact power transmission system using electromagnetic fields. The power transmitter coil in the bracket and power receiver coil in the armrest body member enable wireless power transfer, eliminating the need for physical cables and their associated routing structures.
Solution Approach 2:
The patent extracts and removes the cable component from the system entirely. By using non-contact power transmission through electromagnetic induction between the transmitter and receiver coils, the cable routing structure is completely eliminated, simplifying the device and improving reliability.
2Adaptability or versatility
If the armrest body member is rotatably mounted on the bracket, then the armrest can be adjusted to different positions, but cable routing becomes complicated and requires additional space
Solution Approach 1:
The patent replaces the mechanical cable routing system with an electromagnetic field-based power transmission system. The non-contact power transmission through coils eliminates the need for flexible cable routing, allowing the armrest to rotate freely without cable constraints or additional routing structures.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium for power transmission. The power transmitter coil generates an electromagnetic field that couples with the power receiver coil, enabling power transfer without direct physical connection, thus allowing rotational movement without cable interference.
3Reliability
If a relay member is added to handle position relation changes during rotation, then power transmission can be maintained, but the device becomes more complex and requires additional space
Solution Approach 1:
The patent employs a dynamic electromagnetic coupling system where the power transmitter and receiver coils are positioned to maintain effective magnetic coupling throughout the armrest's rotation range. The coils are oriented and spaced such that their magnetic fields continuously overlap, eliminating the need for relay members to maintain power transmission during movement.
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
Power is transferred to the armrest body member without routing cables, reducing the risk of damage and saving space, as the relative position of the coils remains consistent during rotation.
Implementation Method 1
a power transmitter mounted in the bracket and transferring power to the power receiver with a non-contact transmission system
Implementation Method 2
Each of the power transmitter and the power receiver may be an air core coil having an annular shape
Data Source
AI summary
An armrest includes a bracket fixed to a frame of a seat, an armrest body member rotatably mounted on the bracket, a receiver coil mounted in the armrest body member, and a transmitter coil mounted in the bracket and transferring power to the receiver coil with a non-contact transmission system.