Motor Vehicle License Lamp Unit Common Mounting Design
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Solution Overview
Problem
Existing saddle-straddling type motor vehicles face challenges in reducing the size of the license lamp unit cover due to individual mounting requirements, which restrict design flexibility and increase component count.
Innovation Solution
A saddle-straddling type motor vehicle design where the license lamp unit and cover are mounted using a common mount member, with the cover hiding the lamp unit's casing, allowing for reduced size and integral molding, and using a moisture-permeable material to prevent condensation, while maintaining structural strength and appearance consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the license lamp unit and cover are individually mounted to ensure assembly performance, then assembly reliability is improved, but the size of the cover cannot be reduced
Solution Approach 1:
The patent combines the mounting functions by providing a common mounting structure where the license lamp unit and cover are mounted together to the vehicle body. The mounting bracket integrates both components, allowing them to be secured simultaneously with fewer fasteners and simpler assembly steps, thereby maintaining assembly reliability while enabling cover size reduction.
Solution Approach 2:
The mounting bracket serves multiple functions: it secures the license lamp unit, supports the cover, and provides positioning for both components. This multi-functional mounting structure eliminates the need for separate mounting mechanisms, ensuring reliable assembly while allowing the cover to be minimized in size.
2Shape
If the casing is made visible, then appearance quality is improved, but sink marks from integral molding become problematic
Solution Approach 1:
The patent extracts the visible appearance function from the casing to the cover. The cover is designed as the primary visible component with attention to appearance quality, while the casing is relegated to a hidden structural element. This allows the casing to be molded with integral projections without concern for sink mark visibility, as the cover conceals any molding defects.
Solution Approach 2:
The patent applies different quality requirements to different components: the cover is designed with high appearance quality standards for visible surfaces, while the casing is designed with functional priorities for structural support and light transmission. This local differentiation of quality requirements allows integral molding of the casing without appearance constraints.
3Adaptability or versatility
If separate mounting positions are provided for the cover and license lamp unit, then assembly flexibility is improved, but the size of mounting components increases
Solution Approach 1:
The patent merges the mounting positions into a unified bracket structure that accommodates both the license lamp unit and cover. This integrated mounting approach reduces the total mounting component size by eliminating redundant fasteners and mounting features, while still providing the flexibility to position and secure both components independently.
4Reliability
If a separate member is used to fix the circuit board in the casing, then fixation reliability is improved, but the size and thickness of the license lamp unit increase
Solution Approach 1:
The patent merges the circuit board fixation function into the casing structure itself. Projections are integrally formed on the casing to engage with corresponding features on the circuit board, eliminating the need for separate fixation members. This integrated approach maintains reliable fixation while reducing the overall size and thickness of the license lamp unit.
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
This design enhances flexibility by allowing independent changes to the cover without altering the lamp unit, reduces component count and size, and prevents moisture-related issues, ensuring effective light emission and appearance consistency.
Implementation Method 1
a part of the casing is made of a moisture-permeable water-proof material... vapor in the storage space of the casing is released to the outside of the casing through a portion of the casing made of the moisture-permeable water-proof material while moisture such as rain water is prevented from entering the casing from the outside
Data Source
AI summary
A liquid-tight storage space is formed by a casing (41) and a transmission portion (43) of a license lamp unit (40), and a circuit board (42) is stored in the storage space. The circuit board (42) is fixed by projections (BS) provided at the casing (41). Light emitting devices (42a) are mounted to a mount surface (MP) of the circuit board (42) facing the transmission portion (43). The light emitted by the light emitting devices (42a) is emitted from a light emitting surface (43a) through the transmission portion (43). The license lamp unit (40) and a cover (50) are mounted to a mud guard (12) by common mount members (BL, 94).