KR970046272A

KR970046272A - 4-speed automatic transmission

Info

Publication number: KR970046272A
Application number: KR1019950048211A
Authority: KR
Inventors: 박종술
Original assignee: 전성원; 현대자동차 주식회사
Priority date: 1995-12-11
Filing date: 1995-12-11
Publication date: 1997-07-26

Abstract

본원 발명의 목적은 싱글 피니언 유성기어기구와 더블 피니언 유성기어기구의 2조로 구성된 기어열에 고정연결구조와 더불어 가변연결구조를 갖도록 각각의 기어 요소들을 연결하여 4단 변속시 유성기어기구 전체요소의 회전 속도가 입력회전수로부터 출력회전수 사이에서 회전하도록 하므로써 동력손실을 저감시키며 종래와 다른 마찰요소들의 배치특성으로 마찰손실을 저감시킨 4속 자동 변속기를 제공하는데 있다. 상기 목적을 달성하기 위한 본 발명의 수단은 입력축이 연결되는 싱글 피니언 유성기어기구(이하 제1기어기구)와 출력축이 연결되는 더블 피니언 유성기어기구(이하 제2기어기구)와를 포함하여 구성되는 4속 자동 변속기에 있어서, 상기 제1기어기구의 선기어에 연결되는 입력축과, 상기 제1및 제2기어기구의 양측 링기어를 선택적으로 연결하는 제1클러치와, 상기 제1기어기구의 선기어와 제2기어기구의 선기어를 선택적으로 연결하는 제3클러치와, 상기 제1기어기구의 링기어와 캐리어 및 선기어중에서 선택되는 2개의 요소를 선택적으로 연결하는 제2클러치와, 상기 제2기어기구의 선기어의 회전을 정지시키기 위한 제1브레이크와, 상기 제1 및 제2기어기구 상호간에 고정 연결된 양측 링기어의 회전을 정지시키기 위한 제1브레이크와, 상기 제2기어기구의 캐리어에 직격되는 출력축과, 로 형성되어 있는 것을 특징으로 한다.An object of the present invention is to rotate the entire planetary gear mechanism during the four-speed shift by connecting the respective gear elements to have a variable connection structure with a fixed connection structure to the gear train consisting of two sets of single pinion planetary gear mechanism and double pinion planetary gear mechanism It is to provide a four-speed automatic transmission that reduces the power loss by allowing the speed to rotate between the input rotational speed and the output rotational speed and the frictional loss due to the arrangement characteristics of the conventional friction elements. Means of the present invention for achieving the above object comprises a single pinion planetary gear mechanism (hereinafter referred to as a first gear mechanism) connected to the input shaft and a double pinion planetary gear mechanism (hereinafter referred to as a second gear mechanism) connected to the output shaft 4 A speed automatic transmission comprising: a first clutch for selectively connecting an input shaft connected to a sun gear of the first gear mechanism, a ring gear on both sides of the first and second gear mechanisms, and a sun gear and a first gear of the first gear mechanism. A third clutch selectively connecting the sun gear of the second gear mechanism, a second clutch selectively connecting the two elements selected from the ring gear, the carrier and the sun gear of the first gear mechanism, and the sun gear of the second gear mechanism; A first brake for stopping rotation of the first brake, a first brake for stopping rotation of both ring gears fixedly connected to the first and second gear mechanisms, and the second gear mechanism And an output shaft which is perpendicular to the carrier of.

Description

4-speed automatic transmission

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 의한 4속 자동 변속기의 제1실시예를 나타내는 계통도이다.1 is a system diagram showing a first embodiment of a four-speed automatic transmission according to the present invention.

제2도는 본 발명에 의한 4속 자동 변속기의 제2실시예를 나타내는 계통도이다.2 is a system diagram showing a second embodiment of a four-speed automatic transmission according to the present invention.

제3도는 본 발명에 의한 4속 자동 변속기의 제3실시예를 나타내는 계통도이다.3 is a system diagram showing a third embodiment of a four-speed automatic transmission according to the present invention.

Claims

A four-speed automatic transmission comprising a single pinion planetary gear mechanism (hereinafter referred to as a first gear mechanism) to which an input shaft is connected and a double pinion planetary gear mechanism (hereinafter referred to as a second gear mechanism) to which an output shaft is connected, wherein the first gear mechanism An input shaft connected to the sun gear of the first gear, a first clutch for selectively connecting both carriers of the first and second gear mechanisms, and a third for selectively connecting the sun gear of the first gear mechanism and the sun gear of the second gear mechanism. A clutch, a second clutch for selectively connecting two elements selected from a ring gear, a carrier and a sun gear of the first gear mechanism, a second brake for stopping rotation of the sun gear of the second gear mechanism, and A first brake for stopping rotation of the ringier fixedly connected to the first and second gear mechanisms, an output shaft directly connected to the carrier of the second gear mechanism, and 4-speed automatic transmission that features.

The method of claim 1, wherein the first speed is obtained by combining only the first clutch and the first brake, and the second speed is obtained by releasing the first brake and engaging the second brake while maintaining the engaged state of the first clutch. The third speed is obtained by releasing the first and second brakes and engaging the second clutch while maintaining the engagement state of the first clutch, and the fourth speed is obtained by releasing the first clutch and the second clutch and the second clutch. Obtained by combining two brakes, the reverse (R-speed) is a four-speed automatic transmission characterized in that the gear stage is obtained by combining the third clutch and the first brake in a state in which the second clutch and the second brake is released. .