Vehicular Window Regulator Drive Wire Winding Detection
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Solution Overview
Problem
Conventional window regulators lack a simple method to quickly and accurately determine normal or abnormal winding of the drive wire around the spiral groove, leading to potential operational failures.
Innovation Solution
An assembling determination method and device that involves winding the drive wire around a spiral groove, arranging an inspection jig to face the drive drum's peripheral surface, and using a determination unit to assess contact or non-contact with the drive wire to differentiate between normal and abnormal winding states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no inspection method is implemented, then the manufacturing process remains simple, but abnormal winding cannot be detected leading to operational failures
Solution Approach 1:
An inspection jig is introduced as an intermediary device to detect abnormal winding of the drive wire. The jig includes a detection portion that contacts the drive wire when abnormal winding occurs, providing a simple yet effective detection mechanism without requiring complex inspection systems
Solution Approach 2:
The inspection system utilizes the existing drive drum rotation and drive wire tensioning mechanism to perform self-inspection. During normal operation, the drive wire's own tension and the drive drum's rotation bring the inspection jig into contact with abnormal portions of the wire, eliminating the need for separate active detection mechanisms
2Measurement precision
If complex inspection methods are used, then abnormal winding can be detected accurately, but the inspection process becomes time-consuming and complex
Solution Approach 1:
The inspection jig is pre-positioned relative to the drive drum and drive wire path before the winding process begins. This preliminary arrangement ensures that any abnormal winding protruding from the drum surface immediately contacts the detection portion, enabling rapid detection without time-consuming inspection procedures
Solution Approach 2:
The inspection process skips complex measurement procedures by using a simple contact-based detection method. The inspection jig quickly identifies abnormal winding through direct contact, allowing the inspection to be completed in the time it takes for the drive drum to rotate and bring the wire under inspection
Data Source
AI summary
An assembling determination method and an assembling determination device for a vehicular opening-closing body driving device can determine a normal/abnormal winding of a drive wire around a spiral groove to ensure a quick and accurate action. The assembling determination method includes winding a drive wire around the spiral groove on the peripheral surface of a drive drum, wherein the drive wire drives a vehicular opening-closing body, arranging an inspection jig to face the drive drum surface via a clearance, determining that the drive wire is wound around the spiral groove in an abnormal manner when the inspection jig contacts the drive wire, and determining that the drive wire to be wound around the spiral groove in a normal manner when the inspection jig and the drive wire are contactless.