Automated manual transmission

Patent metadata

Field	Value
Publication number	US-9382974-B2
Application number	US-201414540897-A
Country	US
Kind code	B2
Filing date	Nov 13, 2014
Priority date	Jul 2, 2014
Publication date	Jul 5, 2016
Grant date	Jul 5, 2016

Abstract

An automated manual transmission may include a hollow input shaft connected to a first clutch and a second clutch so as to be selectively interruptible and selectively receive power from the first or second clutch. The transmission may also include an output shaft provided with a first plurality of shift gears, and an idler shaft provided with a second plurality of shift gears to receive power from the first clutch and to shift gears, with a first idler gear provided on the idler shaft. The transmission may further include a second idler gear connecting the first idler gear to a shift gear in the first plurality of shift gears provided on the output shaft to receive power from the second clutch.

First claim

What is claimed is:

1. An automated manual transmission, comprising:
a hollow input shaft connected to a first clutch and a second clutch so as to be selectively interruptible, the hollow input shaft selectively receiving power from the first or second clutch;
an output shaft provided with a first plurality of shift gears;
an idler shaft provided with a second plurality of shift gears to receive power from the first clutch and to shift gears, with a first idler gear provided on the idler shaft; and
a second idler gear connecting the first idler gear to a shift gear in the first plurality of shift gears provided on the output shaft to receive power from the second clutch.

2. The automated manual transmission as set forth in claim 1 , wherein:
a first synchronizer is provided between a pair of shift gears in the first plurality of shift gears provided on the output shaft that directly receive power from the input shaft,
the second plurality of shift gears provided on the idler shaft comprise a pair of shift gears, and
a second synchronizer is provided between the pair of shift gears in the second plurality of shift gears provided on the idler shaft.

3. The automated manual transmission as set forth in claim 1 , further comprising
a differential gear engaging with the output shaft,
wherein the input shaft, the output shaft and a central shaft of the differential gear are disposed on a same plane.

4. The automated manual transmission as set forth in claim 1 , wherein:
a first drive gear, a second drive gear, a third drive gear, a fourth drive gear and a fifth drive gear are provided on the input shaft,
a first-speed shift gear and a third-speed shift gear are provided on the idler shaft, wherein the first-speed shift gear engages with the first drive gear, and the third-speed shift gear engages with the third drive gear,
a first synchronizer is disposed between the first-speed shift gear and the third-speed shift gear,
a second-speed shift gear, a fourth-speed shift gear and a fifth-speed shift gear are provided on the output shaft, wherein the second-speed shift gear engages with the second drive gear, the fourth-speed shift gear engages with the fourth drive gear, and the fifth-speed shift gear engages with the fifth drive gear, and
a second synchronizer is disposed between the fourth-speed shift gear and the fifth-speed shift gear, wherein the second-speed shift gear receives power from the second clutch.

5. The automated manual transmission as set forth in claim 4 , wherein a reverse drive gear is further provided on the input shaft, the automated manual transmission further comprising:
a reverse idler gear transmitting power to the idler shaft through the reverse drive gear.

6. The automated manual transmission as set forth in claim 4 , further comprising:
a reverse idler shaft provided with an R(reverse)-speed gear,
wherein a third synchronizer is further provided on the reverse idler shaft, and an R-speed drive gear is further provided on the input shaft, the R-speed drive gear engaging with the reverse idler gear.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Kim Chon Ok
• Eo Soon Ki

Classifications

• F16H2200/0047

  the gear ratios comprising five forward speeds · CPC title

• F16H2003/0822

  characterised by the arrangement of at least one reverse gear · CPC title

• F16H3/091 Primary

  including a single countershaft · CPC title

• F16H3/006 Primary

  power being selectively transmitted by parallel flow paths, e.g. dual clutch transmissions · CPC title

• F16H2003/0826

  wherein at least one gear on the input shaft, or on a countershaft is used for two different forward gear ratios · CPC title