Patent ID: 7712395

Claim:
An automatic transmission comprising: a pressure adjusting unit that controls hydraulic pressure supplied to a transmission mechanism by an operation of an electric component; a housing that has a heat radiating portion for radiating heat to the outside and houses the pressure adjusting unit; a first connector that is so arranged as to pass through the housing and has a control circuit unit electrically connected to the electric component of the pressure adjusting unit; and a second connector that is electrically connected to an electric component outside the housing and is engaged with the first connector and the heat radiating portion to be electrically connected to the control circuit unit and to press the first connector onto the heat radiating portion, wherein the second connector has a main portion and first and second arm portions extending from the main portion to respective free ends, each of said free ends having an engaging claw, the heat radiating portion has first and second depressed portions, and the respective engaging claws are engaged with the depressed portions whereby the second connector is retained by the heat radiating portion to sandwich the first connector between itself and the heat radiating portion.