| 摘要 |
PROBLEM TO BE SOLVED: To prevent generation of sound vibration, and to stabilize operational performance by increasing support rigidity of a rotary shaft, and preventing the occurrence of axial dislocation of the rotary shaft. SOLUTION: In this motor installing structure of a brake unit where a motor 2 is installed in a unit housing 1 for housing a pump P by a fastening means, a front plate abutting to a surface of the unit housing 1 is arranged inside the fastening means of the motor 2, an inner diameter part of the front plate forms a cylindrical part 241 for forming a cylindrical shape of installing a bearing on the inner periphery for supporting the rotary shaft 21 of the motor 2, and the motor 2 is installed in a state of pressing the cylindrical part 241 in an installing hole 12, a wavy part 243 is arranged on the outer periphery of the cylindrical part 241 for applying elastic force in the radial direction to the inner periphery of the installing hole 12 of the unit housing 1 in a state of pressing the cylindrical part 241 in the installing hole 12.
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