| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a housing and a heat sink of a control device constituting an electric power steering apparatus made of synthetic resin and satisfying heat radiating performance and durability needed for the control device of an ECU incorporated power steering apparatus. <P>SOLUTION: The housing 42 accommodating a circuit substrate 41 of the control device 4 comprises a case 421 and a lid 422. The heat sink 43 is attached at a position not interfering with an electric motor 3 below the case 421. The case 421, the lid 422, and the heat sink 43 are injection molded from a resin composition which comprises polyphenylene sulfide (PPS), carbon fiber, and alumina, in which the content of the carbon fiber is 15 mass% or more and 40 mass% or less, the content of the alumina is 5 mass% or more and 10 mass% or less, the total content of the carbon fiber and the alumina is 20 mass% or more and 50 mass% or less. <P>COPYRIGHT: (C)2013,JPO&INPIT |
