Vehicle Mounted Object Displacement Control via Asymmetric Bracket

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Solution Overview

Problem

Existing vehicle designs face challenges in controlling the displacement of mounted objects, such as motors, during collisions, which can lead to adverse dynamics and potential falling off, making it difficult to predict and prevent their behavior.

Innovation Solution

A vehicle configuration where a mounted object, like a rear wheel driving system, is supported by a framework member with extending portions that abut on the framework's surface when an external force is applied, offsetting the object to inhibit displacement and distributing the load across multiple framework members for enhanced stability and rigidity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If the bracket is broken to control the displacement of the mounted object, then the mounted object can be detached from the vehicle body, but it becomes difficult to predict the behavior of the mounted object and may fall off

Engineering Contradiction:

Improvedisplacement control of mounted objectVSAvoidpredictability of mounted object behavior

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The supporting member is divided into a broken portion and an unbroken portion, with the broken portion configured to detach under collision forces while the unbroken portion maintains structural integrity. This segmentation allows controlled displacement while preventing complete failure and loss of the mounted object.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The bracket is pre-configured with a vulnerable portion designed to break at specific impact thresholds. This preliminary design ensures that when collision occurs, the bracket detaches in a predictable manner along predetermined paths, preventing uncontrolled movement and falling off of the mounted object.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If the mounted object is supported by a rigid supporting member, then the mounted object remains stable, but the mounted object cannot be detached or displaced to prevent adverse effects during collision

Engineering Contradiction:

Improvestability of mounted objectVSAvoidadverse dynamic effects during collision

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The supporting member transitions from a rigid state during normal operation to a broken/detached state during collision. The broken portion is designed to fail at specific impact thresholds, allowing the mounted object to detach and displace away from the occupant space, thereby reducing adverse dynamic effects while maintaining stability during normal use.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The collision force that would normally cause harmful effects is utilized to break the vulnerable portion of the bracket, converting the harmful impact into a beneficial detachment mechanism. This allows the mounted object to automatically displace away from the occupant space when collision occurs, transforming the harmful force into a protective action.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Device complexity

If the mounted object is positioned centrally, then the vehicle structure is simplified, but the mounted object may directly impact the occupant space during collision

Engineering Contradiction:

Improvevehicle structureVSAvoidimpact on occupant space

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The mounted object is positioned asymmetrically offset from the vehicle centerline toward one side. This asymmetric positioning ensures that during front or rear collisions, the mounted object displaces away from the occupant space rather than directly into it, reducing harmful effects while maintaining relatively simple vehicle structure.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS9630486B2Vehicle

Publication Date: 2017.04.25 HONDA MOTOR CO LTD

AI summary

A vehicle including a mounted object, which is supported by a framework member of the vehicle with a supporting member and which is disposed offset to one side of the vehicle with respect to a center of the vehicle in a front-rear direction, wherein the mounted object includes an extending portion that extends from the mounted object while inclined to a vertical direction or that extends from the mounted object in a horizontal direction, and that is formed such that, when an external force of a predetermined value or larger is exerted on the mounted object from the one side to displace the mounted object to the other side by a predetermined amount or larger, the extending portion abuts on a surface of the right-left framework member, the surface facing upward in the vertical direction.