JPH0322137U

JPH0322137U -

Info

Publication number: JPH0322137U
Application number: JP8259189U
Authority: JP
Priority date: 1989-07-13
Filing date: 1989-07-13
Publication date: 1991-03-06
Anticipated expiration: 2004-07-13
Also published as: JP2519718Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る動力伝達装置
の断面図、第２図は第１カムメンバーの正面図、
第３図は第２カムメンバーの正面図、第４図ａ，
ｂは同装置におけるカム部の部分展開図、同図ｃ
は同図ｂの一部省略部分拡大図、第５図は同装置
における要部拡大断面図、第６図はバネ部材の一
例であるウエーブワツシヤスプリングの斜視図、
第７図〜第９図は付勢手段の３つの変形例をそれ
ぞれ示す第５図に対応する断面図、第１０図は同
装置を搭載した車両の概略構成図、第１１図は、
差動回転数に対するフイン部の重合長さおよび粘
性流体の充填率の増大量の関係を示すグラフ、第
１２図は充填率に対するトルク倍率の関係を示す
グラフ、第１３図は差動回転数に対する伝達トル
クの関係を示すグラフである。符号の説明、１０……動力伝達装置、１０ａ…
…摩擦クラツチ、１０ｂ……粘性抵抗力発生手段
、１０ｃ……推力変換手段、１１……アウタケー
ス、１２……インナケース、１４……第１カムメ
ンバー、１４ａ……第２フイン、１５……第１フ
イン、１６……第２カムメンバー、１７……コロ
、１８ａ……ニードルベアリング、１８ｂ，１８
ｆ……軌道輪、１８ｃ，１８ｄ……スプリング、
２５，２６……プロペラシヤフト。 FIG. 1 is a sectional view of a power transmission device according to an embodiment of the present invention, FIG. 2 is a front view of a first cam member,
Figure 3 is a front view of the second cam member, Figure 4a,
b is a partial exploded view of the cam part of the same device, and c is the same figure.
is a partially omitted enlarged view of FIG.
7 to 9 are sectional views corresponding to FIG. 5 showing three modified examples of the urging means, FIG. 10 is a schematic configuration diagram of a vehicle equipped with the same device, and FIG. 11 is a sectional view corresponding to FIG.
A graph showing the relationship between the overlapping length of the fin portion and the increase in the filling rate of viscous fluid with respect to the differential rotation speed, FIG. 12 is a graph showing the relationship between the torque multiplier and the filling rate, and FIG. It is a graph showing the relationship of transmitted torque. Explanation of symbols, 10...Power transmission device, 10a...
...Friction clutch, 10b...Viscous resistance force generating means, 10c...Thrust converting means, 11...Outer case, 12...Inner case, 14...First cam member, 14a...Second fin, 15... 1st fin, 16...2nd cam member, 17...roller, 18a...needle bearing, 18b, 18
f...Bearing ring, 18c, 18d...Spring,
25, 26...Propeller shaft.

Claims

[Scope of utility model registration request]

It is disposed between the inner and outer 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 the two rotating members so that torque can be transmitted. a friction clutch that increases or decreases a friction engagement force in accordance with the thrust; a viscous resistance generating means that generates a viscous resistance in accordance with the relative rotation of the two rotating members; and a viscous resistance generating means located between the viscous resistance generating means and the friction clutch; The thrust converting means includes a pair of cam members that rotate relative to each other in response to a viscous resistance force, and a cam follower interposed between the two cam members, and the viscous resistance force generating means is installed within the outer rotating member. a viscous fluid chamber partitioned by one of the cam members; a first fin that is integrally provided on the cam member and has a number of concentric fin portions that protrude into the fluid chamber; A second fin having a plurality of fins that are integrally rotatably provided on one of the rotating members, protrude into the fluid chamber, and are concentrically and alternately fitted with each fin of the first fin.
The one cam member is slidably assembled into and out of the fluid chamber to seal a predetermined amount of viscous fluid and gas in the fluid chamber, and the cam member is attached to both the fins. A power transmission device characterized in that the two are biased by springs in directions that separate from each other.