Power transmitting apparatus for vehicle

Patent metadata

Field	Value
Publication number	US-9297443-B2
Application number	US-201314090977-A
Country	US
Kind code	B2
Filing date	Nov 26, 2013
Priority date	Jul 24, 2013
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A power transmitting apparatus may include first and second input shafts selectively receiving torque of a power source through first and second clutches, first and second output shafts disposed in parallel with the first and second input shafts, a plurality of input gears disposed on the first and second input shafts, and at least five speed gears selectively connected to the first and second output shafts through a plurality of synchronizer modules.

First claim

What is claimed is:

1. A power transmitting apparatus for a vehicle comprising:
first and second input shafts selectively receiving torque of a power source through first and second clutches;
first and second output shafts disposed in parallel with the first and second input shafts;
a plurality of input gears disposed on the first and second input shafts, wherein first, second, and third input gears are disposed on the first input shaft, and fourth, fifth, and sixth input gears are disposed on the second input shaft; and
first, second, third, fourth, fifth, and sixth speed gears and two seventh speed gears selectively connected to the first and second output shafts through a plurality of synchronizer modules, wherein the two seventh speed gears include one seventh speed gear and another seventh speed gear,
wherein each speed gear of the first, second, third, fourth, fifth, and sixth speed gears and the two seventh speed gears are continuously engaged with each corresponding input gear of the first, second, third, fourth, fifth, and sixth input gears such that the torque of the power source is changed by selective operation of the plurality of synchronizer modules and the changed torque is transmitted to the first output shaft or the second output shaft,
wherein the one seventh speed gear and the fourth speed gear are disposed respectively on different output shafts and are engaged to the same input gear on the first input shaft, and
wherein the one seventh speed gear and the another seventh speed gear are disposed on the same output shaft and the another seventh speed gear is engaged to any one of the input gears on the second input shaft.

2. The power transmitting apparatus of claim 1 , wherein the fifth speed gear and the third speed gear are disposed respectively on different output shafts and are engaged to the same input gear on the second input shaft other than the input gear to which the another seventh speed gear is engaged.

3. The power transmitting apparatus of claim 2 , wherein the first input shaft is a hollow shaft and the second input shaft is configured for penetrating the first input shaft and is disposed co-axially with the first input shaft.

4. The power transmitting apparatus of claim 2 , further comprising:
a reverse speed gear rotatably disposed on and selectively and operably connected to any one output shaft of the first and second output shafts;
a reverse speed shaft disposed in parallel with the first output shaft;
a reverse input gear fixedly disposed on the reverse speed shaft and engaged with any one input gear on the first input shaft other than the input gear to which the one seventh speed gear and the fourth speed gear are engaged; and
an idle gear fixedly disposed on the reverse speed shaft and engaged with the reverse speed gear.

5. The power transmitting apparatus of claim 4 , wherein the reverse speed gear and the one seventh speed gear selectively connected to the first output shaft through a first synchronizer module, the fifth speed gear and the another seventh speed gear selectively connected to the first output shaft through a second synchronizer module, and the sixth speed gear selectively connected to the first output shaft through a third synchronizer module are disposed on the first output shaft.

6. The power transmitting apparatus of claim 5 , wherein the reverse speed gear is engaged with the idle gear, the reverse input gear is engaged with the first input gear, the one seventh speed gear is engaged with the second input gear, the fifth speed gear is engaged with the fourth input gear, the another seventh speed gear is engaged with the sixth input gear, and the sixth speed gear is engaged with the third input gear.

7. The power transmitting apparatus of claim 4 , wherein the second speed gear and the fourth speed gear selectively connected to the second output shaft through a fourth synchronizer module, and the third speed gear and the first speed gear selectively connected to the second output shaft through a fifth synchronizer module are disposed on the second output shaft.

8. The power transmitting apparatus of claim 7 , wherein the second speed gear is engaged with the first input gear, the fourth speed gear is engaged with the second input gear, the third speed gear is engaged with the fourth input gear, and the first speed gear is engaged with the fifth input gear.

9. A power transmitting apparatus for a vehicle comprising:
a first clutch connected to a power source and selectively outputting torque of the power source;
a second clutch connected to the power source and selectively outputting the torque of the power source;
a first input shaft being a hollow shaft, selectively receiving the torque of the power source through the first clutch, and provided with first, second, and third input gears disposed on an exterior circumference thereof;
a second input shaft configured for penetrating the first input shaft without rotational interference therebetween, selectively receiving the torque of the power source through the second clutch, and provided with fourth, fifth, and sixth input gears disposed on an exterior circumference thereof;
first and second output shafts disposed in parallel with the first and second input shafts;
a reverse speed device including a reverse speed shaft, an idle gear, and a reverse input gear fixedly disposed on the reverse speed shaft;
a reverse speed gear disposed on the first output shaft, selectively connected to the first output shaft through a first synchronizer module, and engaged with the idle gear connected through the reverse speed shaft to the reverse input gear engaged with the first input gear;
one seventh speed gear disposed on the first output shaft, selectively connected to the first output shaft through the first synchronizer module, and engaged with the second input gear;
a fifth speed gear disposed on the first output shaft, selectively connected to the first output shaft through a second synchronizer module, and engaged with the fourth input gear;
another seventh speed gear disposed on the first output shaft, selectively connected to the first output shaft through the second synchronizer module, and engaged with the sixth input gear;
a sixth speed gear disposed on the first output shaft, selectively connected to the first output shaft through a third synchronizer module, and engaged with the third input gear;
a second speed gear disposed on the second output shaft, selectively connected to the second output shaft through a fourth synchronizer module, and engaged with the first input gear;
a fourth speed gear disposed on the second output shaft, selectively connected to the second output shaft through the fourth synchronizer module, and engaged with the second input gear;
a third speed gear disposed on the second output shaft, selectively connected to the second output shaft through a fifth synchronizer module, and engaged with the fourth input gear; and
a first speed gear disposed on the second output shaft, selectively connected to the second output shaft through the fifth synchronizer module, and engaged with the fifth input gear.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Lee Sueng Ho
• Lee Chang Wook
• Park Jongsool

Classifications

• Y10T74/19228

  Multiple concentric clutch shafts · CPC title

• F16H3/006 Primary

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

• F16H2003/0931

  each countershaft having an output gear meshing with a single common gear on the output shaft · CPC title

• F16H3/087 Primary

  characterised by the disposition of the gears (F16H3/083, F16H3/085 take precedence) · CPC title

• F16H61/688

  with two inputs, e.g. selection of one of two torque-flow paths by clutches · CPC title