Vehicle Hood Release Step Assembly for High Ride Height Access

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Solution Overview

Problem

Vehicles with high ride heights, such as trucks and SUVs, pose accessibility challenges for servicing components like batteries and dipsticks due to obstructed views and elevated positions when the hood is open, making it difficult for standard-sized individuals to access these areas safely and effectively.

Innovation Solution

A deployable step assembly integrated with the hood release system, which pivots from a stowed to a deployed position in conjunction with the hood's opening, providing a stepping surface to improve access to the compartment while the hood is open, and is actuated by a hood release lever or mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the hood is opened to access components under the hood, then accessibility to components is improved, but the driver's forward view is obstructed

Engineering Contradiction:
Improveaccessibility to componentsVSAvoiddriver's forward view obstruction
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The invention divides the hood opening action into two separate actions: opening the hood and deploying the step assembly. This segmentation allows the hood to be opened for component access while the step assembly provides a platform that elevates the user, thereby maintaining driver's view by positioning the user higher relative to the hood opening.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If the vehicle ride height is increased for cargo capacity, then cargo capacity is improved, but accessibility to components under the hood is worsened

Engineering Contradiction:
Improvecargo capacityVSAvoidaccessibility to components
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The step assembly is designed as a dynamic, deployable structure that transforms from a stowed position to a deployed position when needed. This dynamic characteristic allows the vehicle to maintain a high ride height for cargo capacity while providing temporary elevation support when component access is required, effectively compensating for the increased ride height.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If a deployable step assembly is added to improve accessibility, then ease of access to components is improved, but device complexity is worsened

Engineering Contradiction:
Improveease of access to componentsVSAvoidstructure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The step assembly is merged with the existing hood latch assembly, sharing common mounting points and structural elements. This integration approach allows the step assembly to be added to improve accessibility while minimizing overall system complexity by reusing existing vehicle structures rather than adding completely separate components.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS9739078B2Vehicle deployable front step
Publication Date: 2017.08.22 FORD GLOBAL TECH LLC
  • US9739078B2 patent drawing
  • US9739078B2 patent drawing
  • US9739078B2 patent drawing

AI summary

A vehicle and a hood release system are provided. The vehicle may include a hood release lever disposed within a vehicle cabin connected to a hood latch assembly and a step assembly disposed within a front portion of the vehicle. The hood release lever may be configured to release the step assembly from a stowed to a deployed position in coordination with releasing the hood latch from a primary latching position to a secondary latching position. The step assembly may be configured to release the hood latch from the secondary latching position to allow the hood to fully open.