Window Regulator Housing with Integrated Stopper
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional window regulators require a thicker bracket to absorb impact when a stopper abuts the carrier plate, leading to increased weight and complexity due to the need for additional components.
Innovation Solution
The window regulator design eliminates the need for a separate bracket by integrating a stopper within the housing of the drive unit, which is made of synthetic resin to reduce weight and enhance impact absorption, with a stopper supporting portion below the stopper to securely manage impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stopper is fixed to a bracket provided on a guide rail, then the stopper can restrict the movement of the carrier plate, but the bracket must be made thicker to avoid deformation under impact, leading to increased weight
Solution Approach 1:
The patent merges the stopper support function into the housing structure itself. The housing includes an integrated stopper support portion that directly supports the stopper, eliminating the need for a separate bracket component. This integration allows the housing to bear the impact forces directly, avoiding the need for thicker brackets and reducing overall weight.
2Reliability
If a stopper is fixed to a bracket provided on a guide rail, then the stopper can restrict the movement of the carrier plate, but the number of components increases due to the bracket
Solution Approach 1:
The patent combines multiple functions into the housing: it serves as the drive unit housing, supports the drum, and provides the stopper support portion. By integrating the stopper support into the housing, the patent reduces the number of separate components (eliminating the bracket) while maintaining the reliability of impact resistance.
3Weight of moving object
If the housing is made of synthetic resin to reduce weight, then the weight is reduced and cross section can be made larger, but the strength must be sufficient to support impacts
Solution Approach 1:
The patent applies local quality by creating a stopper support portion with a larger cross-section specifically at the impact zone. This localized structural reinforcement provides the necessary strength to absorb impacts from the stopper while the rest of the housing maintains its lightweight synthetic resin construction.
Solution Approach 2:
The housing is made of synthetic resin, utilizing the material's inherent properties of low weight and sufficient strength for the application. The material selection balances weight reduction requirements with the need to support impact forces through proper structural design.
Data Source
AI summary
There is provided a window regulator in which there is no need to provide a bracket for fixing a stopper and which can surely support an impact caused when the stopper abuts a carrier plate. The window regulator includes: a carrier plate, a guide rail, a direction changing member, a drive unit, a raising wire, and a lowering wire, where the drive unit has a drum, a motor for driving the drum and a housing, and the housing has a drum housing portion for housing the drum, a guide rail connecting portion to be connected to the guide rail, a stopper which abuts the carrier plate when the carrier plate reaches its lower limit position and prevents the carrier plate from further lowering therefrom, and a stopper supporting portion provided below the stopper in the lowering direction of the carrier plate.