Multiple speed transmission

Patent metadata

Field	Value
Publication number	US-2016138683-A1
Application number	US-201414896752-A
Country	US
Kind code	A1
Filing date	Mar 27, 2014
Priority date	Aug 30, 2013
Publication date	May 19, 2016
Grant date	—

Abstract

An automatic transmission 20 includes: a Simpson type complex planetary gear train 25 including single pinion type first and second planetary gears 21 and 22 and single pinion type third and fourth planetary gears 23 and 24 ; first through fourth clutches C 1 to C 4 ; and first and second brakes B 1 and B 2 . A first carrier 21 c of the first planetary gear 21 is coupled to an input shaft 20 i . A first ring gear 21 r of the first planetary gear 21 is selectively connected to an output shaft 20 o by the first clutch C 1.

First claim

1 - 11 . (canceled)

12 . A multiple speed transmission for changing a speed of power transmitted to an input member and transmitting the power to an output member, the multiple speed transmission comprising:
a first planetary gear including a first rotation element, a second rotation element, and a third rotation element that are arranged in order with intervals in accordance with a gear ratio on a velocity diagram; a second planetary gear including a fourth rotation element, a fifth rotation element, and a sixth rotation element that are arranged in order with intervals in accordance with a gear ratio on a velocity diagram; a complex planetary gear train including a fixable element, an input element constantly coupled to the input member, a first output element, and a second output element that are arranged in order with intervals in accordance with a gear ratio on a velocity diagram; and six engaging elements each connecting and disconnecting a rotation element of one of the first planetary gear, the second planetary gear, and the complex planetary gear train to and from another rotation element or a stationary member, wherein the first rotation element of the first planetary gear is constantly coupled to the fourth rotation element of the second planetary gear, the second rotation element of the first planetary gear is constantly coupled to the input element of the complex planetary gear train, the fifth rotation element of the second planetary gear is constantly coupled to the output member, a first engaging element of the six engaging elements connects and disconnects the fifth rotation element of the second planetary gear and the output member that are constantly coupled to each other to and from the third rotation element of the first planetary gear, and first through tenth forward speeds and a reverse speed are formed by selectively engaging three of the six engaging elements including the first engaging element.

13 . The multiple speed transmission according to claim 12 , wherein
a second engaging element of the six engaging elements connects and disconnects the sixth rotation element of the second planetary gear to and from the first output element of the complex planetary gear train, a third engaging element of the six engaging elements connects and disconnects the first rotation element of the first planetary gear and the fourth rotation element of the second planetary gear that are constantly coupled to each other to and from the second output element of the complex planetary gear train, a fourth engaging element of the six engaging elements connects and disconnects the first rotation element of the first planetary gear and the fourth rotation element of the second planetary gear that are constantly coupled to each other to and from the first output element of the complex planetary gear train, a fifth engaging element of the six engaging elements connects and non-rotatably holds the sixth rotation element of the second planetary gear stationary to the stationary member, and disconnects the sixth rotation element of the second planetary gear from the stationary member, and a sixth engaging element of the six engaging elements connects and non-rotatably holds the fixable element of the complex planetary gear train stationary to the stationary member, and disconnects the fixable element of the complex planetary gear train from the stationary member.

14 . The multiple speed transmission according to claim 13 , wherein
the first forward speed is formed by engaging the third engaging element, the fourth engaging element, and the fifth engaging element, the second forward speed is formed by engaging the fourth engaging element, the fifth engaging element, and the sixth engaging element, the third forward speed is formed by engaging the third engaging element, the fifth engaging element, and the sixth engaging element, the fourth forward speed is formed by engaging the first engaging element, the fifth engaging element, and the sixth engaging element, the fifth forward speed is formed by engaging the first engaging element, the third engaging element, and the sixth engaging element, the sixth forward speed is formed by engaging the first engaging element, the fourth engaging element, and the sixth engaging element, the seventh forward speed is formed by engaging the first engaging element, the second engaging element, and the fourth engaging element, the eighth forward speed is formed by engaging the first engaging element, the second engaging element, and the sixth engaging element, the ninth forward speed is formed by engaging the second engaging element, the fourth engaging element, and the sixth engaging element, the tenth forward speed is formed by engaging the second engaging element, the third engaging element, and the sixth engaging element, and the reverse speed is formed by engaging the second engaging element, the third engaging element, and the fifth engaging element.

15 . The multiple speed transmission according to claim 13 , wherein
the first planetary gear is a single pinion type planetary gear including a first sun gear, a first ring gear, and a first carrier rotatably and revolvably holding a plurality of first pinion gears meshing with the first sun gear and the first ring gear, the second planetary gear is a single pinion type planetary gear including a second sun gear, a second ring gear, and a second carrier rotatably and revolvably holding a plurality of second pinion gears meshing with the second sun gear and the second ring gear, and the first rotation element is the first sun gear, the second rotation element is the first carrier, the third rotation element is the first ring gear, the fourth rotation element is the second sun gear, the fifth rotation element is the second carrier, and the sixth rotation element is the second ring gear.

16 . The multiple speed transmission according to claim 15 , wherein
the complex planetary gear train includes a single pinion type third planetary gear including a third sun gear, a third ring gear, and a third carrier rotatably and revolvably holding a plurality of third pinion gears meshing with the third sun gear and the third ring gear, and also includes a single pinion type fourth planetary gear including a fourth sun gear, a fourth ring gear, and a fourth carrier rotatably and revolvably holding a plurality of fourth pinion gears meshing with the fourth sun gear and the fourth ring gear, and the fixable element is the third sun gear and the fourth sun gear that are constantly coupled to each other, the input element is the third carrier, the first output element is the third ring gear and the fourth carrier that are constantly coupled to each other, and the second output element is the fourth ring gear.

17 . The multiple speed transmission according to claim 15 , wherein
the complex planetary gear train includes a single pinion type third planetary gear including a third sun gear, a third ring gear, and a third carrier rotatably and revolvably holding a plurality of third pinion gears meshing with the third sun gear and the third ring gear, and also includes a single pinion type fourth planetary gear including a fourth sun gear, a fourth ring gear, and a fourth carrier rotatably and revolvably holding a plurality of fourth pinion gears meshing with the fourth sun gear and the fourth ring gear, and the fixable element is the fourth sun gear, the input element is the third ring gear and the fourth carrier that are constantly coupled to each other, the first output element is the third carrier and the fourth ring gear that are constantly coupled to each other, and the second output element is the third sun gear.

18 . The multiple speed transmission according

Assignees

• Toyota Motor Co Ltd
• Aisin Aw Co

Inventors

• Kato Takayoshi
• Morimoto Takashi
• Aoki Toshihiko
• Kato Hiroshi
• Kasuya Satoru
• Inagaki Tomochika
• Todo Minoru
• Oita Shinji
• Morise Masaru
• Miyazaki Terufumi
• Hasegawa Yoshio

Classifications

• F16H2200/2023

  using a Ravigneaux set with 4 connections · CPC title

• F16H2200/201

  with three sets of orbital gears · CPC title

• F16H2200/2046

  with six engaging means · CPC title

• F16H3/663 Primary

  with conveying rotary motion between axially spaced orbital gears, e.g. a stepped orbital gear or Ravigneaux · CPC title

• F16H2200/2012

  with four sets of orbital gears · CPC title