Turn Indicator Lamp With Separate Wiring Access

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Solution Overview

Problem

Existing turn indicator lamps for saddle-straddling type motor vehicles require complex and damaging procedures for bulb replacement due to the integral bonding of reflector and lens, making it difficult to access and insert new bulbs without damaging the light emitter.

Innovation Solution

A turn indicator lamp design featuring a light emitter with a wiring connector, a reflector member with a support hole, and a main body supporter that allows the light emitter to be easily inserted and removed without contact with the main body, using inclined support holes and separate openings for wiring, enabling smooth replacement without damaging the light emitter.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the reflector and lens are integrally bonded to form a single unit, then the structural integrity and assembly simplicity are improved, but the ease of repair and bulb replacement deteriorate because the operator cannot easily access the bulb insertion hole and may damage the light emitter during attachment

Engineering Contradiction:
Improvestructural integrityVSAvoidbulb replacement ease
Core Design Contradiction:
Stability of the object's compositionVSEase of repair

Solution Approach 1:

The patent divides the integral reflector-lens assembly into separate components: the reflector member with an through-hole and the lens member with a fitting portion. This segmentation allows the lens to be detached from the reflector, enabling easy access to the bulb while maintaining structural integrity when assembled. The lens member can be removed independently to access the bulb without damaging the reflector or the bulb itself.

Inventive Principle:
Principle #1Segmentation

2Ease of manufacture

If the bulb is inserted through the insertion hole from the outside of the lens, then the assembly process is simplified, but the ease of operation for bulb replacement deteriorates because the operator cannot confirm the insertion hole position and may cause damage during attachment

Engineering Contradiction:
Improveassembly simplicityVSAvoidbulb replacement operation
Core Design Contradiction:
Ease of manufactureVSEase of operation

Solution Approach 1:

The patent introduces a guide portion that protrudes from the reflector member through the through-hole to engage with a guide groove in the lens member. This intermediary feature serves as a visual and physical guide for the operator, making the insertion hole position easily identifiable and ensuring proper alignment during bulb installation, thereby preventing damage while maintaining assembly simplicity.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Reliability

If the wiring connector is positioned in the inner space through the insertion hole, then the electrical connection is achieved, but the device complexity increases and the ease of repair worsens due to the need to disassemble the reflector and lens for access

Engineering Contradiction:
Improveelectrical connection reliabilityVSAvoidassembly complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the wiring connector positioning function from the bulb insertion process. The wiring connector is positioned in the inner space through the through-hole of the reflector member independently of the lens assembly. This extraction allows the wiring connection to be established separately, reducing the complexity of the overall assembly process and facilitating easier repair operations.

Inventive Principle:
Principle #2Taking out (Extraction)

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

Facilitates easy and smooth bulb replacement without damaging the light emitter, improving maintainability and reducing the risk of damage during the process.

Implementation Method 1

a reflector member (40) having a reflection surface (41) that reflects light emitted from the light emitter

Methodology Applied
Scientific EffectLight reflection: Reflection

Data Source

PatentEP2722229B1Turn indicator lamp and a saddle-straddling type motor vehicle including the same
Publication Date: 2019.05.15 YAMAHA MOTOR CO LTD
  • EP2722229B1 patent drawingFigure 1
  • EP2722229B1 patent drawingFigure 2
  • EP2722229B1 patent drawingFigure 3

AI summary

A lens (30) is supported at a reflector member (40) by a lens supporter (42), and a light emitter (50) is supported by the reflector member (40). In this state, a valve (52) of the light emitter (50) is positioned in an emission space of the reflector member (40), and a light-emitting module in which the lens (30), the reflector member (40) and the light emitter (50) are integrally coupled is constituted. The light-emitting module is attached in a storage space (20S) of a main body storage (20). A direction of opening of a first opening (21) and a direction of opening of a second opening (22) of the main body storage (20) intersect with each other. The reflector member (40) supports the light emitter (50) such that a wiring connector (51a) of the light emitter (50) is positioned in an inner space of a main body supporter (10) through the second opening (22) in the storage space (20S).