JPS57103957A - Hydraulic control apparatus of automatic speed change gear - Google Patents

Hydraulic control apparatus of automatic speed change gear

Info

Publication number
JPS57103957A
JPS57103957A JP55179928A JP17992880A JPS57103957A JP S57103957 A JPS57103957 A JP S57103957A JP 55179928 A JP55179928 A JP 55179928A JP 17992880 A JP17992880 A JP 17992880A JP S57103957 A JPS57103957 A JP S57103957A
Authority
JP
Japan
Prior art keywords
brake
hydraulic servo
band
pressure receiving
speed change
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP55179928A
Other languages
Japanese (ja)
Other versions
JPS6125936B2 (en
Inventor
Yasuhiko Fujita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP55179928A priority Critical patent/JPS57103957A/en
Publication of JPS57103957A publication Critical patent/JPS57103957A/en
Publication of JPS6125936B2 publication Critical patent/JPS6125936B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/3003—Band brake actuating mechanisms

Abstract

PURPOSE:To make a hydraulic servo small in size wherein a plurality of driving ratios are obtained between input and output axes by causig a plurality of frictional engageable apparatuses to be selectively engaged, by adopting in one of the frictionally engageable apparatuses a band brake that is operated by a hydraulic servo having a special structure. CONSTITUTION:In an automobile automatic transmission with three forward gears and one reverse gear, a desired speed change operation is obtained by selectively engaging clutches 28, 30 and brakes 42, 56. In this case, for the brake 42 the band brake 42 wherein a brake band 64 is arranged on the outer circumference of a brake drum 62 is adopted which is operated and controlled by the hydraulic servo 56. The hydraulic servo 56 includes a piston 58 of which rod 60 engages with an engaging part 66 of the brake band 64, and the piston 58 has pressure receiving surfaces 88, 94 on the brake operating side and a pressure receiving surface 68 on the brake releasing side. A hydraulic oil is suitably introduced independently into the pressure receiving surfaces 68, 88, 94 from oil paths 74, 92, 98.
JP55179928A 1980-12-18 1980-12-18 Hydraulic control apparatus of automatic speed change gear Granted JPS57103957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55179928A JPS57103957A (en) 1980-12-18 1980-12-18 Hydraulic control apparatus of automatic speed change gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55179928A JPS57103957A (en) 1980-12-18 1980-12-18 Hydraulic control apparatus of automatic speed change gear

Publications (2)

Publication Number Publication Date
JPS57103957A true JPS57103957A (en) 1982-06-28
JPS6125936B2 JPS6125936B2 (en) 1986-06-18

Family

ID=16074371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55179928A Granted JPS57103957A (en) 1980-12-18 1980-12-18 Hydraulic control apparatus of automatic speed change gear

Country Status (1)

Country Link
JP (1) JPS57103957A (en)

Also Published As

Publication number Publication date
JPS6125936B2 (en) 1986-06-18

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