Height-Adjustable Screen Attachment Structure for Motorcycles

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Solution Overview

Problem

Conventional screen attachment structures for saddle riding vehicles require larger angle adjustment stays that compromise design freedom and visibility of attachment holes, limiting the adjustability and aesthetics of the screen position.

Innovation Solution

A screen attachment structure featuring a screen stay with upper and lower attachment holes, an adjustment member with a protruding portion for hidden attachment, and a nut member for secure fastening, allowing the screen to be adjusted in height without increasing the number of components and maintaining design flexibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If angle adjustment stays are used to allow screen position adjustment, then the screen attachment position is adjustable, but the attachment holes become externally visible and design freedom is reduced

Engineering Contradiction:

Improvescreen attachment position adjustabilityVSAvoidaesthetics (hidden attachment holes)

Core Design Contradiction:

Adaptability or versatilityVSShape

Solution Approach 1:

A cover member is introduced as an intermediary component between the adjustment member and the exterior. This cover member conceals the attachment holes and adjustment mechanisms from external view while allowing the adjustment functionality to remain operational, thus resolving the contradiction between adjustability and aesthetics

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The attachment system is segmented into distinct functional components: the screen stay, the adjustment member with protruding portion, and the cover member. This segmentation allows each component to perform its specific function independently - the adjustment member provides position adjustment while the cover member handles the aesthetic concealment requirement

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If angle adjustment stays include both height adjustment and angle adjustment functions, then the screen position is adjustable, but the stay size increases and design freedom is reduced

Engineering Contradiction:

Improvescreen position adjustabilityVSAvoidstay size

Core Design Contradiction:

Adaptability or versatilityVSLength of moving object

Solution Approach 1:

The adjustment functionality is segmented between the screen stay (providing height adjustment through upper and lower attachment holes) and the adjustment member (providing angle adjustment through rotation). This segmentation allows each component to be optimized for its specific function without requiring oversized stays that combine both functions

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The adjustment member is designed with rotational capability, allowing it to dynamically change the screen angle independently of the height adjustment provided by the screen stay. This dynamic adjustment mechanism enables position variability without increasing the physical size of the stay components

Inventive Principle:

Principle #15Dynamics

3Reliability

If the attachment adjustment member is fastened through the screen and screen stay, then the screen is securely attached, but the adjustment member may rotate during fastening

Engineering Contradiction:

Improveattachment securityVSAvoidadjustment member orientation

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The protruding portion on the adjustment member self-locks into the engagement hole of the screen stay during the fastening process. This self-locking mechanism automatically prevents rotation of the adjustment member without requiring additional locking components or complex assembly procedures

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The protruding portion is pre-configured on the adjustment member to engage with the screen stay's hole before the final tightening of the fastening bolts. This preliminary engagement action establishes the correct orientation and prevents rotation during the subsequent fastening operation

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP2489581B1Screen attachment structure for saddle riding type vehicle

Publication Date: 2013.09.04 HONDA MOTOR CO LTD

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AI summary

The invention aims to allow a screen to be attached to a vehicle body in a height-adjustable manner with an unused attachment hole hidden but without a reduction in the degree of freedom in design. Screen 6 is attached to screen stay 8 provided on a vehicle body with a bolt 7 via an attachment adjustment member 30. The attachment adjustment member 30 has an attachment hole 31 at one end thereof and a protruding portion 32 at the other end thereof. The attachment hole 31 can be aligned with one of an upper attachment hole 15 and a lower attachment hole 16 provided in the screen stay 8, while the protruding portion 32 is fitted into the other one of the attachment holes to hide the attachment hole. When the attachment hole 31 is aligned with the upper attachment hole 15, the screen 6 is attached through the upper attachment hole 15 and thus set in a high position. When the attachment adjustment member 30 is turned around and the attachment hole 31 is aligned with the lower attachment hole 16, the screen 6 is attached through the lower attachment hole 16 and thus set in a low position.