Window Regulator Slider Base Composite Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing window regulator configurations are prone to warping or deformation when external forces are applied to the slider base, particularly due to stress concentration in the synthetic resin-made body member.
Innovation Solution
A window regulator design that incorporates a metal-made support member fixed to a resin-made body member, with the support member holding the body member in the widthwise direction of the guide rail, utilizing holding lugs and a cover portion to enhance rigidity and prevent deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a resin-made body member is used for the slider base, then ease of manufacture and cost are improved, but strength and resistance to warping under external forces deteriorate
Solution Approach 1:
The slider base is constructed as a composite structure combining a resin-made body member with a metal-made support member. The resin body member provides ease of manufacture and cost benefits, while the metal support member reinforces the structure to prevent warping and deformation under external forces, thus resolving the contradiction between ease of manufacture and strength.
2Weight of moving object
If a resin-made body member is used for the slider base, then weight is reduced, but stability under rotational forces deteriorates
Solution Approach 1:
The composite structure of resin body member and metal support member maintains the weight advantage of resin while the metal support member provides the necessary stability to resist rotational forces from the window glass, preventing warping and deformation.
Solution Approach 2:
The metal support member is strategically positioned at specific locations (holding portion with holding lugs) where rotational forces are most likely to cause warping. This localized reinforcement provides stability exactly where needed without adding unnecessary weight throughout the entire slider base.
3Device complexity
If the body member is fixed directly to the window glass, then device complexity is reduced, but stress concentration and deformation risk increase
Solution Approach 1:
The metal support member acts as an intermediary between the resin body member and the window glass. It provides a stable mounting surface for the window glass and distributes forces evenly, preventing stress concentration on the resin body member while maintaining relatively simple device structure.
Data Source
AI summary
In a window regulator which moves a slider base, slidable along a guide rail, via a pair of wires, the slider base is configured of: a body member made of synthetic resin which is slidably supported by the guide rail and to which each wire is connected; and a support member made of metal which supports a window glass, and the support member is provided with a holding portion which holds the body member in the widthwise direction of the guide rail. This configuration makes it possible to achieve a window regulator in which the slider base is not easily warped or deformed when an external force is exerted thereon and which is superior in strength and durability.