JPH0278824U

JPH0278824U -

Info

Publication number: JPH0278824U
Application number: JP15968088U
Authority: JP
Priority date: 1988-12-08
Filing date: 1988-12-08
Publication date: 1990-06-18

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る動力伝達機構
の断面図、第２図は第１図の矢印―線方向の
断面図、第３図ａはカム手段におけるカム部の拡
大断面図、第３図ｂは同図ａの矢印―線方向
の断面図、第３図ｃはカム部の変形例を示す断面
図、第４図は同機構を採用した車両の概略図、第
５図はカム手段を採用した場合の差動回転数に対
する伝達トルクを示すグラフである。符号の説明、１０…動力伝達機構、１０ａ…押
圧力発生手段、１０ｂ…摩擦係合力発生手段、１
０ｃ，１０ｄ…カム手段、１１…アウタケース、
１２…インナシヤフト、１３…作動ピストン、１
４…ロータ、１４ｂ…ベーン部、１５…リテーナ
、１５ｃ…凹所、１６…副作動ピストン、１６ｂ
…カム溝、１７…クラツチプレート、１８…クラ
ツチデイスク、１９…ボール（カムフオロア）、
２５，２６…プロペラシヤフト。 FIG. 1 is a sectional view of a power transmission mechanism according to an embodiment of the present invention, FIG. 2 is a sectional view taken in the direction of the arrow in FIG. 1, and FIG. Fig. 3b is a sectional view taken in the direction of the arrow in Fig. 3a, Fig. 3c is a sectional view showing a modified example of the cam section, Fig. 4 is a schematic diagram of a vehicle adopting the same mechanism, and Fig. 5 is a sectional view taken in the direction of the arrow in Fig. 3a. It is a graph which shows the transmission torque with respect to differential rotation speed when a cam means is adopted. Explanation of symbols, 10...Power transmission mechanism, 10a...Pushing force generation means, 10b...Frictional engagement force generation means, 1
0c, 10d...Cam means, 11...Outer case,
12... Inner shaft, 13... Operating piston, 1
4... Rotor, 14b... Vane part, 15... Retainer, 15c... Recess, 16... Sub-operating piston, 16b
...Cam groove, 17...Clutch plate, 18...Clutch disk, 19...Ball (cam follower),
25, 26...Propeller shaft.

Claims

[Scope of utility model registration request]

It is arranged between a pair of rotating members that are coaxially and relatively rotatably positioned, and is actuated by the relative rotation of these rotating members to generate and apply a frictional engagement force that connects both rotating members so that power can be transmitted. A frictional engagement force generation means for increasing or decreasing the frictional engagement force according to the pressing force, and a pressing force generation means for generating a pressing force according to the relative rotation of both rotating members and applying it to the frictional engagement force generation means, an actuating piston in which the pressing force generating means is slidable in the axial direction in a liquid-tight manner between the two rotary members and is integrally rotatably assembled to one of the rotary members and abuts on the frictional engagement force generating means; a retainer configured to be integrally rotatable with the one rotary member and to form a fluid chamber in which a viscous fluid is sealed with a predetermined distance between the retainer and the actuating piston; and one or more retainers extending in the radial direction. and a rotor integrally assembled to the other rotating member in the fluid chamber, the retainer having an annular recess facing one side of the rotor. and a sub-actuating piston is fitted into the recess liquid-tightly and slidably in the axial direction to form a minute gap between the sub-actuating piston and the side surface of the rotor, and the sub-actuating piston and the retainer a cam follower, which has a cam surface formed on one of the opposing surfaces, engages with the cam surface between the two, and moves radially outward under the action of centrifugal force to press the sub-actuating piston in the axial direction; A power transmission mechanism characterized by interposing.