Hydraulic controller for transmission

A hydraulic controller for a transmission, comprising:

• a hydraulic control valve, which is mounted on an internal wall of a transmission housing;
• an oil pump, which is mounted on a valve body of said hydraulic control valve;
• and
• a pump drive shaft, which is provided rotatably in said transmission housing;
• wherein:
• said oil pump comprises a pump casing assembly, which is mounted to said valve body, an outer rotor and an inner rotor, both of which are provided in said pump casing assembly;
• said pump drive shaft is inserted into said pump casing assembly and fit into said inner rotor, so that said inner rotor is rotated and driven by said pump drive shaft;
• and
• said oil pump sucks oil from an oil tank, which is formed at a bottom of said transmission housing, and supplies it through a delivery passage, which is formed at a mounting surface to said valve body, to said hydraulic control valve.