Dual Isolation Mechanisms for Vehicle Operator Platform

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Solution Overview

Problem

Conventional suspension systems fail to adequately isolate the operator from the motion of a vehicle chassis, leading to a bumpy ride due to uneven terrain, as they either cause significant chassis motion or do not effectively absorb motion through the legs.

Innovation Solution

A dual isolation mechanism system is implemented between the chassis and operator platform, using telescopic members and biasing members to pivotally couple and absorb motion, allowing the platform to float independently and reducing chassis motion transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a conventional suspension system is used to isolate the operator from chassis motion, then the operator experiences a bumpy ride, but the system still transmits significant motion to the operator platform

Engineering Contradiction:
Improvechassis motion transmissionVSAvoidoperator ride comfort
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The isolation system is divided into multiple independent isolation mechanisms positioned at opposite borders of the operator platform. Each mechanism independently absorbs motion from the chassis, creating segmented isolation zones that collectively reduce overall motion transmission to the operator platform.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The isolation mechanisms serve as intermediary elements between the chassis and the operator platform. These mechanisms include biasing members and telescopic members that act as mediators to absorb and dampen chassis motion before it reaches the operator platform, thereby reducing harmful motion transmission.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If isolation mechanisms are positioned at opposite borders of the operator platform, then motion absorption is improved, but the device complexity increases

Engineering Contradiction:
Improvemotion absorptionVSAvoidisolation system structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

Each isolation mechanism is designed as a multi-functional unit that combines biasing members for motion absorption with telescopic members for structural support and coupling. This universal design allows each mechanism to perform multiple functions simultaneously, reducing the need for separate components and thereby limiting the increase in overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The operator platform is further isolated from chassis motion, providing a smoother ride and reducing the need for stronger suspension systems, as the isolation mechanisms absorb and dissipate kinetic energy, improving comfort and accessibility.

Implementation Method 1

a first isolation mechanism and a second isolation mechanism operably connected between the chassis and the operator platform... Each isolation mechanism at least partially absorbs motion from the chassis

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a dual isolation mechanism system is implemented between the chassis and operator platform, using telescopic members and biasing members to pivotally couple and absorb motion

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentUS7882914B2Operator platform isolation system
Publication Date: 2011.02.08 HUSQVARNA AB
  • US7882914B2 patent drawing
  • US7882914B2 patent drawing
  • US7882914B2 patent drawing

AI summary

A vehicle for terrain travel includes a chassis, an operator platform including space for footing, a first isolation mechanism and a second isolation mechanism operably connected between the chassis and the operator platform. The isolation mechanisms are to be placed either below, above or level with the operator platform and at substantially opposite edges of the operator platform. Each isolation mechanism at least partially absorbs motion from the chassis. The isolation mechanisms may be made up of telescopic members, a biasing member or a dampening device. One of the isolation mechanisms may provide pivotal coupling of the operator platform to the chassis and at least partially absorb motion from the chassis.