초록 ▼

A lockup damper, in which an approximately disc-like piston (28) having a convex portion current toward a front cover (12) is provided freely slidingly in its axial direction. A retaining plate (38) and a side plate (40) for holding coil springs (36) are provided on the piston (28). Spring seats (44

A lockup damper, in which an approximately disc-like piston (28) having a convex portion current toward a front cover (12) is provided freely slidingly in its axial direction. A retaining plate (38) and a side plate (40) for holding coil springs (36) are provided on the piston (28). Spring seats (44) and (50) compressing the coil springs (36) are formed on the retaining plate (38) and the side plate (40). A power transmitting driven plate (30) having axially projecting claws extending in between the coil springs (36) is provided. Therefore the lockup damper is simple in its construction, light in its weight, cheap in its manufacturing cost, and is suitable for a torque converter having the convex type front cover (12).

대표청구항 ▼

A lockup damper for a torque converter, said torque converter having a front cover with a convex portion curved toward an outside at its radially intermediate part and to which power is transmitted, a turbine and a turbine hub fixed to said turbine; said lockup damper comprising an approximately ann

A lockup damper for a torque converter, said torque converter having a front cover with a convex portion curved toward an outside at its radially intermediate part and to which power is transmitted, a turbine and a turbine hub fixed to said turbine; said lockup damper comprising an approximately annular disc-like piston having a convex portion curved toward said front cover at its radially intermediate part adjacent said convex portion of the front cover, said piston being mounted on said turbine hub freely slidable in an axial direction relative to said front cover; a plurality of coil springs disposed circumferentially in said convex portion of said piston; an annular retaining plate for holding said coil springs from moving radially outward secured to said piston radially outward of said convex portion of said piston; a side plate for holding said coil springs from moving radially inward secured to said piston radially inward of said convex portion of said piston; spring seats for compressing coil springs formed on any one or both of said retaining plate and said side plate; and a power transmitting driven plate fastened at its inner peripheral part to said turbine and having axially projecting claws extending toward said convex portion of said piston between adjacent ones of said coil springs.