JPS6352621U

JPS6352621U -

Info

Publication number: JPS6352621U
Application number: JP14716386U
Authority: JP
Priority date: 1986-09-26
Filing date: 1986-09-26
Publication date: 1988-04-08

Description

[Brief explanation of the drawing]

第１図は本考案にかかる４輪駆動装置の全体概
略説明図、第２図は本考案にかかる４輪駆動装置
の要部断面説明図、第３図は本考案にかかる４輪
駆動装置の油路説明図、第４図は本考案にかかる
４輪駆動装置のセンタデフの制限トルクを示す特
性図である。１……エンジン、２……変速機、６……変速機
の出力軸、８……センタデフ、１２……デフケー
ス、１４，１６……ピニオン、１８，２０……サ
イドギヤ、２２……前輪出力軸、２４……後輪出
力軸、２６……油圧ポンプ、３０……前輪用デフ
、３６……第１プレツシヤリテーナ、３８……第
２プレツシヤリテーナ、４０……カムリング、４
２……ポンプケース、４６……ロータ、５２，５
４，５６……ポンプ室、５８，６０，６２，６４
，６６，６８……吸入吐出口、６７……第１油路
、６９……第２油路、７０……油溜り、７１，７
２……チエツクバルブ、７４……第１副油路、７
６……第２副油路、８２……第１逆止弁、８４…
…第１オリフイス、９０……第２逆止弁、９２…
…第２オリフイス。 FIG. 1 is an overall schematic explanatory diagram of a four-wheel drive device according to the present invention, FIG. 2 is a cross-sectional explanatory diagram of main parts of a four-wheel drive device according to the present invention, and FIG. 3 is a diagram illustrating a four-wheel drive device according to the present invention. The oil passage explanatory diagram, FIG. 4, is a characteristic diagram showing the limit torque of the center differential of the four-wheel drive device according to the present invention. 1... Engine, 2... Transmission, 6... Transmission output shaft, 8... Center differential, 12... Differential case, 14, 16... Pinion, 18, 20... Side gear, 22... Front wheel output shaft , 24... Rear wheel output shaft, 26... Hydraulic pump, 30... Front wheel differential, 36... First pressure retainer, 38... Second pressure retainer, 40... Cam ring, 4
2...Pump case, 46...Rotor, 52,5
4, 56...Pump room, 58, 60, 62, 64
, 66, 68... Suction/discharge port, 67... First oil passage, 69... Second oil passage, 70... Oil sump, 71, 7
2... Check valve, 74... First auxiliary oil passage, 7
6...Second auxiliary oil passage, 82...First check valve, 84...
...First orifice, 90...Second check valve, 92...
...Second orifice.

Claims

[Scope of utility model registration request]

A center differential mechanism that inputs driving force from a vehicle engine from an input shaft and distributes it to two output shafts connected to front wheels and rear wheels, either of the input shaft and the two output shafts. A hydraulic pump that is driven by the rotational speed difference between two shafts and discharges an amount of oil according to the same rotational speed difference, and is installed in an oil passage on the discharge side from which oil is discharged from the hydraulic pump, and is a flow path in the same oil passage. Squeezing means for squeezing the area and generating hydraulic pressure;
The flow path area of the throttle means provided in the oil passage on the discharge side when the front wheel rotates faster than the rear wheel is the same as the flow path area of the throttle means provided in the oil passage on the discharge side when the front wheel rotates slower than the rear wheel. A four-wheel drive device characterized by comprising hydraulic control means for making the flow path area smaller than the flow path area of the throttle means.