Differential gear setting differential limiting forces in response to rotational force transmission direction
US5865071A · kind A · utility
Inventor
Key dates
| Filing date | Dec 30, 1996 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Dec 30, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19005
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A differential gear is capable of differentially setting magnitudes of differential limiting forces depending on directions of rotational force transmission. A rotational force of the input-side rotary element is transmitted by way of rolling elements and grooves to the rotary elements. The rolling elements roll along grooves of the rotary elements while reciprocating within elongated holes of the retainer element, thereby permitting the difference in speeds of rotation between the rotary elements. The differential motions of the rotary elements are limited by axial reaction forces generated between the rotary elements and the grooves. At that time, if the directions of the rotational force transmission between the input-side rotary element and the rotary elements differ from each other, then the magnitudes of the axial reaction forces generated between the rotary elements and the grooves will also be different from each other. Hence, differential limiting forces are generated which differ in magnitude from one another depending on the directions of transmission of rotational forces. According to the present invention, therefore, a small and low-cost configuration is achieved and t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.