Headlight Aiming Adjuster With Direct-Reading Indicator Nut
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Solution Overview
Problem
Current vehicle headlamp aiming systems lack a suitable solution for integrating a direct reading indicator with adjusters, which is essential for ensuring proper aiming and avoiding glare, as per Vehicle Safety Standards.
Innovation Solution
A vehicle headlight aiming device comprising a device housing with a screw chamber, an input drive gear, an output screw, and an indicator nut with expandable threaded legs that allow longitudinal movement without rotating the screw shaft, enabling visual indication of aim adjustments without over-adjustment risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a direct reading indicator is integrated with the adjuster system, then measurement precision and reliability are improved, but device complexity increases
Solution Approach 1:
The patent combines the indicator mechanism with the existing adjuster components by integrating the indicator nut with the screw shaft and gear system. The indicator nut threads onto the screw shaft and moves longitudinally with the ball stud, providing a direct reading indication without requiring separate measurement devices or complex additional mechanisms.
Solution Approach 2:
The indicator nut serves multiple functions: it provides visual indication of the ball stud position through its longitudinal movement, acts as a mechanical component within the adjuster system, and enables direct reading of aiming adjustments. This multi-functionality reduces the need for separate indicator devices and minimizes added complexity.
2Ease of manufacture
If the indicator nut is designed with expandable threaded legs for easy installation, then ease of manufacture and installation are improved, but structural complexity increases
Solution Approach 1:
The indicator nut features expandable threaded legs that can change their configuration during installation. The legs are initially in a compressed state for insertion, then expand to engage with the housing features, providing a simple yet effective installation mechanism without requiring complex assembly tools or procedures.
Solution Approach 2:
The threaded legs of the indicator nut undergo parameter changes in their dimensional state during installation. The legs expand from a compact configuration to an extended configuration, changing their physical parameters to enable engagement with the housing and secure mounting of the indicator nut without complex fastening operations.
Data Source
AI summary
A vehicle headlight aiming device is provided that includes, a device housing having an input drive gear, a screw chamber, an output screw having a screw shaft, a screw first end that is rotationally coupled at least indirectly with the input drive gear, and a screw second end. The device further including an indicator nut having a base with a nut indicator mark, a first leg and second leg extending from a base bottom portion, and an expandable threaded opening extending between a first threaded wall of the first leg and a second threaded wall of the second leg, the threaded walls selectively engageable with a threaded portion of the screw shaft, wherein the threaded opening is expandable to disengage the first threaded wall and the second threaded wall from the threaded portion to allow longitudinal movement of the indicator nut within the device housing without rotating the output screw.