A motor includes a drive circuit for driving a rotor by controlling a current applied to an armature winding of a stator, and a capacitor for smoothing a voltage supplied to the armature winding and/or a capacitor for smoothing a supply voltage from outside on a same board. The board and the stator are integrally molded in using resin. Prior to the molding, capacitors are sealed inside a cylindrical metal case with a closed top face by rubber, and a pair of lead terminals protrude outside through this sealing rubber. The capacitors are mounted upright on the board and fixed by applying adhesive at two diagonally opposite areas on a bottom end of the metal case.
1. A motor comprising:
a stator in which an armature winding is wound around a slotted stator iron core via an insulator;
a rotor rotatably disposed confronting the stator;
a drive circuit disposed on a board, the drive circuit controlling a current applied to the armature winding and rotation of the rotor; and
a capacitor which is at least one of a first capacitor and a second capacitor disposed on the board, the first capacitor smoothing a voltage supplied to the armature winding, and the second capacitor smoothing a supply voltage supplied from outside;
wherein the board and the stator are integrally molded in using resin for forming a cover, and the drive circuit includes a group of switching elements for supplying the current to the armature winding and a drive logic controller for controlling on and off states of the group of switching elements,
wherein the capacitor includes a wound element, in which an anode foil and a cathode foil are wound, housed in a cylindrical metal case having a closed top face, and sealed with a sealing rubber, which capacitor also includes an anode lead terminal and a cathode lead terminal both extending through and protruding from the sealing rubber;
wherein the capacitor is mounted upright on the board and fixed to the board by applying an adhesive at two diagonally opposite areas on a bottom end of the metal case with resin existing between the sealing rubber and the board,
wherein a gas outlet is provided near a top face of the capacitor.
2. The motor of claim 1 , wherein the adhesive is applied at areas in a direction perpendicular to a direction from the anode lead terminal to the cathode lead terminal.
3. The motor of claim 1 , wherein the capacitor has a semi-spherical top face.
4. The motor of claim 1 , wherein a protrusion is provided on a top face.
5. The motor of claim 1 , wherein the capacitor is a solid electrolytic capacitor whose electrolyte is organic conductive compound.
6. The motor of claim 1 , wherein the sealing rubber includes a protrusion extending to the board.