Window Regulator Swing Bar Tensioning Mechanism
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Solution Overview
Problem
Existing window regulators face issues with slack power feed wires causing noise and potential damage due to complex structures and separate waterproofing requirements for contact structures within the wire reel.
Innovation Solution
A window regulator design featuring a guide rail, carrier plate, window power feed wire, swing bar, and elastic member that applies tension to the power feed wire, preventing slack and eliminating the need for a complex wire reel structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wire reel with contact structure is used to prevent slack in the motor power feed wire, then the power feed wire remains taut and noise is prevented, but the structure becomes complicated and additional waterproofing is required
Solution Approach 1:
The invention extracts the contact structure from the wire reel assembly and places it outside the wire reel. The lead wire contacts the motor power feed wire externally through a contact portion on the lead wire that touches the power feed wire near the motor, eliminating the need for internal contact structures within the wire reel and simplifying the overall design while maintaining electrical connection functionality
Solution Approach 2:
The lead wire serves multiple functions: it provides electrical connection to the motor and simultaneously acts as the contact structure that prevents slack in the motor power feed wire. The contact portion on the lead wire performs the tension-maintaining function that would otherwise require a separate mechanism within the wire reel, reducing structural complexity
2Device complexity
If the contact structure is provided outside the wire reel, then the wire reel structure is simplified, but additional waterproofing structures are needed
Solution Approach 1:
The invention merges the contact structure with the existing external components of the window regulator system. The contact portion on the lead wire utilizes the existing motor housing and door panel structures as mounting points, integrating the contact function into the existing waterproof envelope of the system rather than requiring separate waterproofing for the contact structure
3Object-generated harmful factors
If the window power feed wire is hung over the swing bar with elastic member tension, then slack is prevented and noise is reduced, but the swing bar mechanism is introduced
Solution Approach 1:
The invention introduces a dynamic tensioning mechanism using the swing bar and elastic member that automatically adjusts to maintain constant tension on the window power feed wire. The elastic member stores and releases energy to compensate for wire slack during window movement, dynamically preventing the wire from becoming loose and contacting the door panel
Solution Approach 2:
The swing bar acts as an intermediary mechanical element between the elastic member and the window power feed wire. It translates the elastic force into directional tension on the wire, mediating the force transmission while maintaining proper wire alignment and preventing contact with surrounding components
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
The solution effectively prevents slack in the window power feed wire, reducing noise and damage while maintaining a simple structure, eliminating the need for additional waterproofing and complex wire reel configurations.
Implementation Method 1
an elastic member that generates an elastic force for oscillation 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, and an elastic member that generates an elastic force for oscillation the swing bar in a predetermined direction. The window power feed wire is hung over the swing bar, and a tension is applied to the window power feed wire by oscillation of the swing bar due to the elastic force of the elastic member.