Straddle Vehicle Headlamp Central Pivot Compact Adjustment
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Solution Overview
Problem
The existing head lamp devices for straddle vehicles with optical axis adjustment mechanisms require increased housing size to accommodate the necessary space for tilt adjustments, which affects the overall design and functionality.
Innovation Solution
A head lamp device design where the support point for the internal light unit is positioned at the area center or near the center in a front view, allowing for reduced movement and size of the housing by minimizing the distance from the support point to the outer edge, enabling compact optical axis adjustment without the need for additional openings for light source replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the support point is positioned away from the area center to accommodate traditional optical axis adjustment, then the optical axis adjustment function is achieved, but the housing size increases
Solution Approach 1:
The patent applies asymmetry by positioning the support point at the area center of the internal unit, creating an asymmetric support configuration that enables compact optical axis adjustment. This central positioning allows the light output device to tilt efficiently within a smaller housing area, resolving the contradiction between achieving adjustment functionality and minimizing housing size.
Solution Approach 2:
The patent utilizes dimensional optimization by configuring the support point at the area center, which allows the light output device to achieve the required tilt angle through optimized movement in multiple dimensions. This central support enables the system to accomplish optical axis adjustment with reduced linear displacement, thereby shrinking the housing footprint while maintaining full adjustment capability.
2Area of stationary object
If the support point is positioned at the area center to reduce housing size, then the housing size is reduced, but the structural complexity increases
Solution Approach 1:
The patent merges the support function with the area center positioning, where the support point serves dual purposes: it provides structural support and enables optimal tilt mechanics. This integration simplifies the overall structure by eliminating the need for separate adjustment mechanisms, thereby reducing housing size without proportionally increasing complexity.
Solution Approach 2:
The support point at the area center performs multiple functions simultaneously: it supports the internal unit, enables optical axis adjustment, and optimizes the tilt movement trajectory. This multi-functionality reduces the need for additional components, maintaining structural simplicity while achieving compact housing dimensions.
3Ease of repair
If traditional light source replacement openings are provided, then light source replacement is enabled, but the housing size increases
Solution Approach 1:
The patent extracts the light source replacement function from the housing structure by using a detachable internal unit design. The entire internal unit containing the light source can be removed and replaced as a single module, eliminating the need for dedicated replacement openings in the housing. This approach maintains ease of repair while significantly reducing housing size.
Solution Approach 2:
The patent implements a dynamic, modular design where the internal unit can be easily detached and reattached. This dynamic configuration allows for simple light source replacement without requiring fixed openings, enabling maintenance functionality while maintaining a compact, sealed housing structure that reduces overall size.
Data Source
AI summary
A head lamp device of a straddle vehicle, the head lamp device having an optical axis adjustment mechanism, comprises a housing; and an internal unit including a light source device which emits light, and a light output device which outputs in a forward direction the light emitted from the light source device, through the housing, the internal unit being accommodated in the housing in a state in which the internal unit is tiltable with respect to the housing. The internal unit includes a support point part which is tiltably supported by the housing. In a front view, the support point part is disposed in an area center of the internal unit or at a location that is in the vicinity of the area center.