Wet type friction material having grooves in friction surface

Abstract

Abstract PURPOSE:To improve an oil shortage trouble, by a method wherein a plurality of grooves, extending approximately in a direction of radius from an end surface of a small circle to an end surface of a large circle, are formed in a friction surface, and the grooves are inclined in a reverse direction to that in which is a friction material turns. CONSTITUTION:A friction material 1 is laminar and a friction surface 11 thereof is specified by an end surface 12 of a small circle, forming an inner periphery of a ring, and an end surface 13 of a large circle forming the outer periphery of the ring. Six linear grooves 2, connecting together the end surfaces 12 and 13 of the large and the small circle, are provided at equal intervals. The grooves 2 are inclined in a following relation: the grooves 2 are formed such that, in consideration of an intersecting point of the recess 2 and in consideration of the end surface 12 of the small circle and a surface including the intersecting point 21 and a center axis O, it is inclined against an intersecting line 21-P of said surface and the friction surface 11 and in a reverse direction to a rotation direction R at a using time or the friction material 1.

Inventors

• 👤 Eiji Hamada
• 👤 浜田　英二
• 👤 Makoto Momose
• 👤 百瀬　誠
• 👤 Goji Shinkai
• 👤 新海　剛司

Bibliographic Details