Patent ID: 7675207

Claim:
A motor device comprising: a motor main body which is provided with a stator part and a rotation shaft extended from the stator part; an output shaft which is provided with a lead screw part for operating an object to be driven; a motor frame which is provided with an opposite-to-output side support part that supports the stator part and an opposite-to-output side of the output shaft, and which is provided with an output side support part which is disposed so as to face the opposite-to-output side support part for supporting an output side of the output shaft, and the motor frame being formed of one piece of a metal plate and both ends of the metal plate being bent at a right angle so that the metal plate is comprised of the opposite-to-output side support part, the output side support part and a bottom plate part between the opposite-to-output side support part and the output side support part; a gear part for transmitting a driving force of the rotation shaft to the output shaft; and an urging member which is mounted on one of the opposite-to-output side support part and the output side support part for urging the output shaft in an axial direction; wherein the opposite-to-output side support part is formed with a first through-hole for penetrating the rotation shaft, and a first bearing which rotatably supports the rotation shaft is held in the first through-hole; and wherein the opposite-to-output side support part is further formed with a second through-hole which holds a second bearing that rotatably supports the opposite-to-output side of the output shaft; wherein the output side support part is formed at a position facing the second through-hole with a third through-hole which holds a third bearing that supports the output side of the output shaft; and wherein one of the second bearing and the third bearing which is mounted on an urging member side is a radial bearing for supporting the output shaft in a radial direction, and an other of the second bearing and the third bearing is a bearing which supports the output shaft in the radial direction and which is abutted with a shaft end face of the output shaft against an urging force of the urging member.