| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a brushless motor having a structure which can dissipate the heat from a switching element suitably to the outside without adhering unnecessary solder on a heat sink. SOLUTION: The heat sink 70 is disposed on an electric circuit board 40 in a state that a lower end portion of a support leg 73 is made to abut against the circuit board 40. The switching element 41 is forcibly brought into contact with a radiation part 72 of the heat sink 70 by a pressing part 61 of a pressing member 60. In this state, linkage segments 63a, 63b of the pressing member 60 are engaged with engaging protrusions 75 of the heat sink 70, and the pressing member 60 and the heat sink 70 are linked with each other. A positioning segment 62 of the pressing member 60 is inserted in a through hole 49 formed in the circuit board 40. As a result, the pressing member 60 and the heat sink 70 linked with the pressing member 60 are positioned to the circuit board 40.</p> |
