Synchronizer with self-energizing
US5092438A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 1990 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Dec 24, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2023/0656
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pin-type, double-acting synchronizer mechanism (22) with friction clutches (24,36 and 26,38), jaw clutch (28,14b and 30,16b) and self-energizing ramps. The ramps act between a shaft (12) and a shift flange (32) which is rotatable relative to the shaft and jaw clutch members 28,30. Flange 32 includes radially inwardly extending teeth (32k) defining self-energizing ramps (32m,32n,32p,32s) which act against ramp (12d,12e,12f,12g) formed in shaft splines (12b). Three circumferentially spaced pins (40) include blocker shoulders (40c,40d) for preventing asynchronous engagement of the jaw clutches and pre-energizer surfaces (40e,40f) which each cooperate with a pre-energizer and neutral centering assembly 42. The angles of the self-energizing ramps may be varied to provide substantially the same synchronizing time for several or all of the ratio gears in a multi-ratio transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.