Window Regulator Swing Bar Slack Removal
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Solution Overview
Problem
Existing window regulators face issues with slack power feed wires causing noise and complexity due to the contact structure within the wire reel, which complicates the structure and may require additional waterproofing, and affects installation workability.
Innovation Solution
A window regulator design featuring a swing bar with an elastic member that applies force to remove slack in the power feed wire, using a temporary holding mechanism to maintain the swing bar's position along the guide rail, preventing contact with other components during installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a contact structure for lead wire and motor power feed wire is provided inside the wire reel, then power can be supplied to the motor, but the structure becomes complicated and additional waterproofing is required
Solution Approach 1:
The contact structure is extracted from the wire reel and relocated to the carrier plate. The lead wire is electrically connected to the motor power feed wire at the carrier plate position rather than inside the wire reel, simplifying the wire reel structure while maintaining power supply functionality
Solution Approach 2:
The carrier plate serves as an intermediary component that hosts the contact structure between the lead wire and motor power feed wire. This mediator approach allows electrical connection to be established outside the wire reel, eliminating the need for internal waterproofing while ensuring reliable power transmission
2Object-generated harmful factors
If the swing bar is arranged to swing within a predetermined angular range to remove slack in the power feed wire, then noise from wire contact is prevented, but the swing bar may contact other components during installation
Solution Approach 1:
The swing bar is preliminarily held in a specific position by the temporary holding mechanism during installation. This preliminary positioning prevents the swing bar from contacting other components while the regulator is being installed, and after installation the holding mechanism releases to allow the swing bar to function normally in removing wire slack
Solution Approach 2:
The swing bar is designed to be dynamically positionable - temporarily fixed during installation by the holding mechanism, then free to swing during operation to remove slack in the power feed wire. This dynamic behavior resolves the contradiction between installation ease and noise prevention
3Object-generated harmful factors
If an elastic member is used to apply elastic force to the swing bar, then slack in the power feed wire is removed, but the structure becomes more complex
Solution Approach 1:
The elastic member is integrated into the existing swing bar mechanism, serving multiple functions: it provides the elastic force needed to remove wire slack while working within the swing bar's rotational geometry. This multi-functional integration avoids adding separate complexity to the system
Solution Approach 2:
The elastic member is combined with the swing bar mechanism rather than being a separate system. The elastic force is applied through the swing bar's existing structural elements, merging the slack removal function with the swing bar's primary function of wire routing
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 design effectively removes slack in the power feed wire without increasing structural complexity, maintaining installation workability and preventing noise caused by wire contact, while eliminating the need for additional waterproofing structures.
Implementation Method 1
an elastic member that generates an elastic force for swinging the swing bar in a predetermined direction
Data Source
AI summary
A window regulator includes a guide rail provided along an ascending/descending direction of a window for a vehicle, a carrier plate that slides on the guide rail and moves together with the window, a window power feed wire for supplying power to the window, a swing bar arranged to be swingable about the rotational axis thereof that is along a width direction of the vehicle, an elastic member that generates an elastic force for swinging the swing bar in a predetermined direction, and a temporary holding mechanism for temporarily holding the swing bar so that the swing bar extends along the longitudinal direction of the guide rail. The window power feed wire is hung over the swing bar.