Straddle Vehicle Headlamp Driver Circuit Layout

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Solution Overview

Problem

Conventional straddle vehicle headlamps have restricted layout options due to the housing of the driver circuit inside the headlamp main body, making the headlamp larger and limiting design flexibility.

Innovation Solution

The driver circuit is disposed outside the headlamp housing, allowing for a downsized headlamp main body and increased flexibility in layout around the headlamp, with the driver circuit being compactly arranged outside the housing and connected to the headlamp main bodies via cables.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the driver circuit is housed inside the headlamp main body, then the headlamp structure is integrated and compact, but the headlamp main body becomes larger and layout flexibility is restricted

Engineering Contradiction:

Improveheadlamp structure integrationVSAvoidheadlamp main body size

Core Design Contradiction:

Device complexityVSVolume of moving object

Solution Approach 1:

The headlamp system is divided into separate functional modules: the headlamp main body (housing with light emission member) and the driver circuit are physically separated. The driver circuit is mounted on a bracket positioned outside the headlamp main body, connected via electrical connectors. This segmentation allows each component to be optimized independently and reduces the overall headlamp main body volume.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The driver circuit is relocated from the internal space of the headlamp main body to an external position mounted on a bracket structure. This spatial reconfiguration in another dimension (from inside to outside the housing) reduces the headlamp main body volume while maintaining functional integration through external mounting and cable connections.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Device complexity

If the driver circuit is housed inside the headlamp main body, then the headlamp structure is integrated, but the layout flexibility around the headlamp is restricted

Engineering Contradiction:

Improveheadlamp structure integrationVSAvoidlayout flexibility

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

By segmenting the driver circuit from the headlamp main body and mounting it on a separate bracket, the system gains modular flexibility. The bracket can be positioned at various locations, and the headlamp main body can be independently designed and positioned, enabling adaptable layouts around the headlamp area.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The external mounting configuration allows dynamic adjustment of the driver circuit position relative to the headlamp main body. The bracket and cable connection enable flexible positioning to accommodate different vehicle designs and layout requirements, enhancing adaptability.

Inventive Principle:

Principle #15Dynamics

3Volume of moving object

If the driver circuit is disposed outside the housing, then the headlamp main body can be downsized, but additional space is required for the driver circuit mounting

Engineering Contradiction:

Improveheadlamp main body sizeVSAvoiddriver circuit mounting space

Core Design Contradiction:

Volume of moving objectVSArea of stationary object

Solution Approach 1:

The driver circuit bracket is integrated with existing vehicle body structures or headlamp mounting areas, combining the driver circuit mounting function with the overall vehicle assembly structure. This approach minimizes the additional space required by utilizing already available structural elements.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11628900B2Straddle vehicle

Publication Date: 2023.04.18 KAWASAKI MOTORS LTD

AI summary

A straddle vehicle includes a vehicle body, a headlamp main body, and a driver circuit. The driver circuit drives the headlamp main body. The headlamp main body includes a housing that accommodates a light emission member. The driver circuit is disposed outside the housing.