Wire Routing Along Arm for Window Glass Power
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Solution Overview
Problem
Conventional electric power-feeding structures for moving vehicle window glasses, which incorporate heating wires, face issues with looseness in feeding lines that can cause malfunctions due to interference with the raising and lowering mechanisms, requiring large accommodation spaces and complex excess-length absorbing devices.
Innovation Solution
An electric power-feeding structure that routes an electrical wire alongside an arm driving the window glass, where the wire is fixed to the arm's side surface, eliminating the need for separate accommodation cases and allowing the wire to follow the arm's motion without interfering with the mechanism, thus miniaturizing the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the feeding line is accommodated in a case turned back in a U-shape to cope with the raising or lowering of the window glass, then the looseness of the feeding line is restricted and malfunction is prevented, but the case becomes large in size and requires a large accommodation space
Solution Approach 1:
The patent merges the feeding line routing with the arm structure itself. The feeding line is routed along the arm that drives the window glass, eliminating the need for a separate accommodation case. This integration allows the feeding line to follow the arm's motion path while preventing excessive looseness, thus maintaining reliability without requiring additional space.
Solution Approach 2:
The arm serves multiple functions: it drives the raising and lowering of the window glass and simultaneously acts as a routing path for the feeding line. This multi-functionality eliminates the need for dedicated accommodation structures, reducing the overall space required while ensuring the feeding line is properly managed during movement.
2Reliability
If an excess-length absorbing device is disposed in the inner space of the door to restrict looseness, then the feeding line is prevented from being bitten by the raising and lowering mechanism, but the device increases the complexity of the structure
Solution Approach 1:
The patent combines the feeding line routing function with the existing arm structure. By routing the feeding line along the arm, the system eliminates the need for separate excess-length absorbing devices or accommodation cases, thereby reducing structural complexity while maintaining the prevention of feeding line interference with the raising and lowering mechanism.
3Ease of operation
If the feeding line is allowed to move without restriction to accommodate looseness, then the raising or lowering movement is smooth, but the feeding line may be bitten by the raising and lowering mechanism causing malfunction
Solution Approach 1:
The feeding line is pre-routed along the arm's path of motion. This preliminary routing ensures that as the arm moves to raise or lower the window glass, the feeding line naturally follows the same path, accommodating the necessary looseness while preventing excessive movement that could cause the line to be bitten by the mechanism.
Data Source
AI summary
An electric power-feeding structure for feeding electric power to a moving body which is driven to be raised or lowered, includes: an arm having a distal end connected to the moving body movably in a direction perpendicular to a raising or lowering direction of the moving body and a proximal end adapted to be rotatably driven so as to swing, to thereby drive the raising or lowering of the moving body. An electrical wire is routed alongside the arm, and one end of the electrical wire extending from the distal end of the arm is connected to the moving body to feed electric power to the moving body. The electrical wire is routed alongside a side surface of the arm.