Kabushiki Kaisha F. C. C.

Tomoyasu Satou

Shinji Furuhashi

Norihiro Sugita

Kenichirou Isobe

Norikazu Takeda

Yoshimichi Uchiyama

A clutch device is provided which facilitates an operation of checking whether or not spring seats have been properly disposed and effectively prevents falling off or a change in attitude of the spring seats, thereby reducing the labor required for manufacture. A clutch deviceincludes a pressure platewhich presses friction plateswhich are rotationally driven by a drive shaft against clutch plates. The pressure plateincludes clutch springsand spring seatsdisposed in receiving portionshaving a concave shape. Each spring seathas two plate-shaped armsandextending along the bottomof the receiving portionand has a C-like shape. Protrusionsandproject from the peripheries of the armsand. Recessesinto which the protrusionsandfit are formed in an inner wall portion of each receiving portionat a position near the bottomof the receiving portion

Clutch device

A clutch outer member () for a multi-plate clutch is provided that includes an end wall (), a large number of fins () extending axially from the outer peripheral part of the end wall () and arranged at equal intervals in the peripheral direction so as to define spline grooves (B) therebetween, and an annular connecting part () formed on the outer periphery at the extremity of this group of fins () and connecting the fins () integrally to each other, the fin () having an axially-extending weight-cutting bottomed groove () formed, wherein the annular connecting part () is provided, on a part of its outer end face corresponding to each of the spline grooves (B), with a reference notch () indicating the position of the spline groove (B), and spline teeth (A) of a friction plate () are fitted into the spline grooves (B) corresponding to the reference notches (). This enables differentiation between the weight-cutting bottomed groove and the spline groove of the clutch outer member to be carried out quickly and appropriately and an operation of fitting the spline teeth of the friction plate into the spline grooves to be carried out quickly.

Growing community of inventors

Hamamatsu, Japan

Tomoyasu Satou