Vehicle Lamp Reflector Support for Aiming and Vibration Suppression
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Solution Overview
Problem
Existing vehicular lamp fittings fail to suppress reflector vibration during vehicle travel, leading to reduced rigidity of resin components due to support at three pivot points.
Innovation Solution
A vehicular lamp fitting with a vibration suppression unit comprising a first and second cylindrical portion and corresponding slit portions, arranged to intersect with the reflector's vibration direction, preventing movement and minimizing nut distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reflector is supported at three positions (pivot portion and two adjusting screws), then the reflector can be adjusted for aiming, but the rigidity of the resin component is reduced and vibration cannot be suppressed
Solution Approach 1:
The support structure is segmented into distinct functional zones: the pivot portion for rotation, the adjusting screws for positioning, and the vibration suppression unit with cylindrical portions and slits for vibration control. This segmentation allows each component to perform its specific function without compromising overall rigidity.
Solution Approach 2:
The vibration suppression unit acts as an intermediary element between the reflector and the housing. The cylindrical portions fitting into slit portions create a constrained interface that mediates between the need for adjustment and the need for vibration suppression, preventing harmful vibrations while maintaining adjustability.
2Ease of operation
If the reflector is supported at three positions, then aiming adjustment is enabled, but vibration of the reflector during vehicle travel cannot be suppressed
Solution Approach 1:
The vibration suppression unit serves as an intermediary mechanism that reconciles the conflicting requirements of adjustability and vibration suppression. The cylindrical portions constrained by slit portions create a controlled interface that allows necessary movements while filtering out harmful vibrations.
Solution Approach 2:
The design changes the mechanical parameters of the support interface by introducing the vibration suppression unit with specific geometric features (cylindrical portions and slits). This modifies the stiffness and damping characteristics of the connection, enabling vibration suppression while preserving aiming adjustment capability.
3Ease of operation
If the reflector is supported at three positions, then the reflector can be tilted for aiming, but the rigidity of the resin component involved in aiming is reduced
Solution Approach 1:
The support structure is divided into functional segments including the pivot portion for tilting, adjusting screws for positioning, and the vibration suppression unit. This segmentation allows the resin component to maintain rigidity in non-critical areas while providing necessary flexibility at the segmented interface for aiming adjustment.
Solution Approach 2:
The vibration suppression unit with cylindrical and slit portions acts as an intermediary that protects the resin component from excessive stress during tilting operations. This intermediary structure distributes and controls the mechanical loads, preventing rigidity reduction in the resin component while maintaining tilting functionality.
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
Suppresses reflector vibration, enhancing the rigidity of resin components and minimizing nut damage, thereby improving the stability and durability of the lamp fitting.
Implementation Method 1
a vibration suppression unit configured to suppress vibration of the reflector with respect to the housing
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
A vehicular lamp fitting capable of suppressing vibration of a reflector (vibration that is occurred during vehicle travel, etc.) is provided. A vehicular lamp fitting comprising a first holding member (20) that holds both a light source and a light control member that controls light emitted by the light source; a second holding member (30) that holds the first holding member so as to be tiltable in the up, down, left and right directions; a vibration suppression unit that suppresses vibration of the first holding member relative to the second holding member; and the vibration suppression unit comprising: a first portion (26), (27) provided on the first holding member; a second portion (32), (33), which is provided on the second holding member and suppresses the vibration of the first holding member with respect to the second holding member by abutting the first portion vibrating in the vibration direction of the first holding member.