Wireless Power Feeder for Rotating Vehicle Seat
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Solution Overview
Problem
Existing vehicle seats with rotatable seat bodies face issues with power transmission due to harness interference during rotation, limiting the distance between power transmitter and receiver for contactless power feeding.
Innovation Solution
A wireless power feeder system with a power transmitter on the floor and a power receiver in the seat body, arranged to always overlap, enabling contactless power transmission and smooth rotation of the seat body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a harness is used to connect the power circuit and the seat body, then electric power can be supplied to the seat body, but the harness interferes with the rotation of the seat body
Solution Approach 1:
The patent extracts and removes the harness from the system by implementing contactless power feeding. The power circuit is separated from the seat body, with the transmitter remaining in the vehicle body and the receiver in the rotatable seat body, eliminating the physical connection that hindered rotation.
Solution Approach 2:
The patent introduces an intermediary wireless power transmission system between the power circuit and the seat body. This includes a power transmitter in the vehicle body, a power receiver in the seat body, and a control unit that manages the wireless power transmission, replacing the direct harness connection.
2Ease of operation
If contactless power feeding is used to avoid harness interference, then the seat body can rotate freely, but the distance between the power transmitter and the power receiver is limited
Solution Approach 1:
The patent implements a dynamic power transmission system where the control unit continuously monitors the positional relationship between the transmitter and receiver during rotation. The system dynamically adjusts power transmission parameters to maintain reliable power feeding throughout the rotation range, ensuring power supply even when the distance varies.
Solution Approach 2:
The control unit receives information about the relative position between the power transmitter and power receiver and uses this feedback to control the power transmission. This feedback mechanism ensures that power feeding remains reliable throughout the rotation by adjusting transmission parameters based on real-time positional data.
3Reliability
If the power transmitter and power receiver are positioned to always overlap, then reliable power transmission is achieved during rotation, but the system complexity increases
Solution Approach 1:
The patent merges the power transmission function with the existing seat rotation mechanism. The control unit integrates the monitoring of positional relationships and the control of power transmission into a single coordinated system, managing both the transmitter and receiver through one control unit to reduce overall system complexity.
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
Ensures reliable power supply to the seat body during rotation, eliminating the need for a harness and allowing 180-degree or 360-degree rotation without interference.
Implementation Method 1
a wireless power feeder that is provided between the floor and the seat body, and transmits electric power from a floor side to a seat body side in a contactless manner
Data Source
AI summary
A seat including: a seat body in which a person is seated; a seat supporter supporting the seat body on a floor; and a wireless power feeder that is provided between the floor and the seat body, and transmits electric power, which is received from a power source, from a floor side to a seat body side in a contactless manner. The seat supporter includes a rotation mechanism that rotates the seat body in a lateral direction, the wireless power feeder includes: a power transmitter provided to the floor and connected to the power source; and a power receiver that is provided in the seat body and receives the electric power from the power transmitter, and the power transmitter and the power receiver are arranged in a state in which the power transmitter and the power receiver always overlap with each other as viewed from above or below.