Patent ID: 8556052

Claim:
A spring leaf, mainly applied in an overrunning clutch, and mounted on a retainer of the overrunning clutch for supporting a needle roller in suspension, comprising: a support strip ( 3 - 1 ), a clamping strip ( 3 - 2 ), and a connection beam ( 3 - 3 ), wherein the support strip ( 3 - 1 ) supports one of multiple needle rollers ( 2 ) in suspension, the connection beam ( 3 - 3 ) connects the support strip ( 3 - 1 ) and the clamping strip ( 3 - 2 ), and the main body of the clamping strip ( 3 - 2 ) is a straight strip ( 3 - 2 - 1 ), either end of which is provided with a V-shaped bended part ( 3 - 2 - 2 ) in the longitudinal direction of the straight strip ( 3 - 2 - 1 ), wherein a middle part of the support strip ( 3 - 1 ) is a straight segment ( 3 - 1 - 1 ), either end of which is provided with an arc segment ( 3 - 1 - 2 ), the straight segment ( 3 - 1 - 1 ) respectively intersects with the two arc segments ( 3 - 1 - 2 ), and end surfaces of the two arc segments ( 3 - 1 - 2 ) of the support strip ( 3 - 1 ) support the needle roller ( 2 ) in suspension; the number of the connection beams ( 3 - 3 ) is two, one end of the connection beam ( 3 - 3 ) is bended towards a first direction and connected to an end surface of the straight strip ( 3 - 2 - 1 ) of the clamping strip, the other end of the connection beam ( 3 - 3 ) is bended towards a second direction opposite to the first direction and connected to an end surface of the straight segment ( 3 - 1 - 1 ) of the support strip ( 3 - 1 ), and the position where the connection beam ( 3 - 3 ) and the support strip ( 3 - 1 ) are connected is close to the position where the straight segment ( 3 - 1 - 1 ) and the arc segment ( 3 - 1 - 2 ) are connected; and the expanded length of the arc segment ( 3 - 1 - 2 ) of the support strip ( 3 - 1 ) is the same as that of the straight segment ( 3 - 1 - 1 ).