Chassis-based force nullification systems and methods for seated and standing vehicle occupants

a technology of force nullification and chassis, applied in the direction of interconnection systems, resilient suspensions, vehicle components, etc., can solve problems such as discomfort and/or fatigu

Inactive Publication Date: 2019-12-26
VOLVO CAR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present disclosure provides chassis-based force nullification systems and methods for seated and standing vehicle occupants. These systems and methods allow the chassis and occupant cell to pivot laterally and longitudinally with respect to a travel surface, such as a road surface, as the vehicle subjects the occupant to lateral and vertical forces. The systems and methods use gravity to neutralize lateral acceleration forces and can be extended to deal with longitudinal acceleration forces as well. The occupant cell structure can lean within ±17 degrees from a perpendicular plane with respect to the travel surface and can be actively assisted in its movement. The patent text also describes the use of these systems and methods in various vehicle systems, such as cars, trucks, and airplanes.

Problems solved by technology

These forces require the occupant to utilize his or her muscles to retain his or her upright posture, potentially resulting in discomfort and / or fatigue over time.

Method used

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Examples

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Embodiment Construction

[0017]Referring now specifically to FIG. 1, a vehicle occupant 10 is illustrated experiencing no lateral acceleration 12, experiencing 1 g of lateral acceleration 14, and experiencing 1 g of lateral acceleration as nullified by the systems and methods of the present disclosure 16. With no lateral acceleration 12, only a vertical gravity force is present and acts upon the occupant 10, which the occupant 10 feels through his or her seating surface, if seated, or feet, if standing. With 1 g lateral acceleration 14, both a vertical gravity force and lateral acceleration force are present and act upon the occupant 10, both of which the occupant 10 feels through his or her seating surface, if seated, or feet, if standing, and through his or her posture-support muscles. The resultant force experienced by the occupant 10 lies between the vertical gravity force and the lateral acceleration force. With 1 g lateral acceleration and nullification 16, both a vertical gravity force and lateral ac...

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PUM

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Abstract

Systems and methods for nullifying lateral and longitudinal acceleration forces experienced by an occupant of a vehicle in a seated or standing position while the vehicle is traveling along a travel surface, the system and methods including: a chassis structure; and an occupant cell structure defined by the chassis structure; wherein the chassis structure includes an upper link pivotably coupled to each of a first wheel assembly and a second wheel assembly and the occupant cell and a lower link pivotably coupled to each of the first wheel assembly and the second wheel assembly and the occupant cell; and wherein the upper link and the lower link define a parallelogram and are configured to translate with respect to one another maintaining parallel sides of the parallelogram, leaning the first wheel assembly, the second wheel assembly, and the occupant cell in unison with respect to the travel surface.

Description

FIELD OF THE DISCLOSURE[0001]The present disclosure relates generally to chassis-based force nullification systems and methods for seated and standing vehicle occupants. More specifically, the present disclosure relates to chassis-based force nullification systems and methods for seated and standing vehicle occupants that allow the chassis and occupant cell to pivot laterally with respect to a travel plane, such as a road surface, as the vehicle subjects the occupant to lateral and vertical forces. These systems and methods may be passive or active and provide enhanced occupant comfort during vehicular maneuvers, such as curve navigation, in both driver assist and autonomous applications. The systems and methods may be extended conceptually to the nullification of longitudinal forces as well.BACKGROUND OF THE DISCLOSURE[0002]A vehicle negotiating a roadway, for example, subjects a vehicle occupant to lateral, longitudinal, and vertical forces. These forces require the occupant to ut...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B60G17/016B60G17/019B60G17/018
CPCB60G17/018B60G17/019B60G17/0162B60G3/20B60G21/026B60G2300/45B62K5/10
Inventor FRASHER, DOUGLAS HALLABELE, LAWRENCE E.
Owner VOLVO CAR CORP
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