Toyota Jidosha Kabushiki Kaisha

Daisuke Kusamoto

Terufumi Miyazaki

Hiromichi Kimura

Yuji Yasuda

Kazuyuki Watanabe

Kazuaki Nakamura

A lubrication structure of a transmission includes a gear chamber having an internal space storing lubricating oil, in which chamber a pressure is raised to a prescribed pressure, a gear chamber having an internal space communicating to the internal space through a communicating hole and attaining a pressure lower than the prescribed pressure, and an oil catch tank provided in the internal space at a position directly under the communicating hole and receiving the lubricating oil that flows into the internal space from the internal space through the communicating hole. With such a structure, a lubrication structure for a transmission capable of holding an oil level at a proper level with a simplified structure can be provided.

Lubrication structure for transmission

A parking lock mechanism of an automatic transmission includes a casing, a parking gear provided in the casing, a parking pawl engaged with the parking gear to achieve a parking lock state, and a 'parking pawl holding portion' suppressing inclination of the parking pawl in an out-of-plane direction (a direction shown with an arrow DR). A groove portion is formed in the casing. A protruding portion is provided in a sleeve fixed to the casing. A side surface of the groove portion implements a 'first portion' of the &#x201c;parking pawl holding portion.&#x201d; A base and protruding portion are formed from a member separate from the casing, and implement a &#x201c;second portion&#x201d; of the &#x201c;parking pawl holding portion.&#x201d;

Growing community of inventors

Nagoya, Japan

Daisuke Kusamoto