Straddle Vehicle Seat Frame Lateral Locking Mechanism

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Solution Overview

Problem

The existing part attachment structures for straddle type vehicles require a large number of fastening parts, making attachment and detachment of detachable resin parts cumbersome and inefficient, while also compromising security.

Innovation Solution

A detachable part design featuring a base portion straddling paired frame members with extendable locking portions that can be easily locked and unlocked by lateral movement, reducing the need for multiple fasteners and simplifying the attachment and detachment process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple fastening parts are used to securely attach the detachable part to the frame members, then the attachment security is improved, but the attachment and detachment work becomes cumbersome and time-consuming

Engineering Contradiction:
Improveattachment securityVSAvoidattachment and detachment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The detachable part is divided into a base portion and multiple extension portions that can be independently positioned. Each extension portion has its own locking mechanism (lateral locking portions and lower locking portions) that can engage with the frame members separately. This segmentation allows the part to be securely attached through multiple distributed locking points while enabling rapid attachment by simply positioning the extension portions onto the frame members without complex fastening procedures.

Inventive Principle:
Principle #1Segmentation

2Reliability

If multiple fastening parts are used to secure the detachable part, then the attachment security is improved, but the device complexity increases

Engineering Contradiction:
Improveattachment securityVSAvoidfastening structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The extension portions are designed to be self-locking through their lateral locking portions and lower locking portions that automatically engage with the frame members when positioned correctly. The base portion provides self-alignment features that guide the extension portions into proper engagement positions. This self-service mechanism eliminates the need for complex manual fastening procedures or additional fastening tools, achieving secure attachment with a simple positioning action.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS9845127B2Part attachment structure of straddle type vehicle
Publication Date: 2017.12.19 HONDA MOTOR CO LTD
  • US9845127B2 patent drawing
  • US9845127B2 patent drawing
  • US9845127B2 patent drawing

AI summary

Attachment and detachment work of a detachable part is facilitated, while achieving secure attachment thereof, in a part attachment structure of straddle type vehicle including the detachable part attached to a body frame. A seat supporting member includes a base portion spanning paired right and left seat frames, and paired right and left extension portions, which are displaceable in the lateral direction, and extend in the longitudinal direction along the paired right and left seat frames, respectively, from the base portion; the base portion is fixed by being fastened to a body frame; each of the paired right and left extension portions includes an upper locking portion, both lateral locking portions, and a lower locking portion; and the lock on the seat frames is engaged or released by only moving the extension portions in two directions.