Diehl Metall Stiftung & Co. Kg

Martin Doernhoefer

Knut Erdmann

Murat Arbak

Meinrad Holderied

Sabine Rahm

A synchronizer ring is made of steel and has a main body with a conical friction surface. A toothing and at least one blocking body project radially outward from the main body. The blocking body has an engagement section extending in the axial direction. The engagement section has a first edge, which runs approximately parallel to a first end face of the main body and has a first width extending in the circumferential direction, and two mutually opposite second edges extending from the first edge. To improve the durability of the synchronizer ring, the second edges have a convex curvature in a plan view of the engagement section. A second width extending in the circumferential direction between the second edges is greater than the first width at a depth spaced apart from the first edge.

Synchronizer ring

A method for producing a synchronizer ring includes providing a ring body made of metal and having a conical connecting surface, providing a friction ring, corresponding to the connecting surface, made of a composite material of carbon fiber bound with a resin, adhesively bonding the friction ring to the connecting surface, and pyrolyzing exclusively an outer layer of the friction ring which is remote from the connecting surface.

Method for producing a synchronizer ring

A sheet-metal synchronizer ring for a synchronizing device has a conical ring body, an outer toothing for blocking the axial movement of a sliding sleeve, and at least one indexing tab which is bent in the axial direction and limits the rotation of the synchronizer ring in a synchronizer hub. The indexing tab has a tab widened portion on at least one side.

Growing community of inventors

Sulzbach-Rosenberg, Germany

Martin Doernhoefer