Abstract: A motor may include a rotor having a rotation shaft made of metal and a cylindrical permanent magnet fixed to the rotation shaft, and a stator facing a peripheral face of the permanent magnet and is electrically insulated from the rotation shaft. The peripheral face of the permanent magnet facing the stator and the rotation shaft are electrically connected with each other.

Abstract: A motor may include a motor main body and an urging member. The urging member is provided with an end plate part having a plate spring part for urging the rotor and an engaging plate part which is extended along an outer peripheral face of a tube-like body part structuring an outer peripheral face of the motor main body. The engaging plate part is provided with a side plate part extended from the end plate part along the outer peripheral face of tube-like body part, a hook part which is bent from a tip end part of the side plate part to an inner side and is engaged with an opening part which is formed in the tube-like body part, and a pawl part which is bent from a tip end part of the hook part and is engaged with an inner peripheral face of the tube-like body part.

Abstract: A motor may include a motor main body and an urging member. The urging member is provided with an end plate part having a plate spring part for urging the rotor and an engaging plate part which is extended along an outer peripheral face of a tube-like body part structuring an outer peripheral face of the motor main body. The engaging plate part is provided with a side plate part extended from the end plate part along the outer peripheral face of tube-like body part, a hook part which is bent from a tip end part of the side plate part to an inner side and is engaged with an opening part which is formed in the tube-like body part, and a pawl part which is bent from a tip end part of the hook part and is engaged with an inner peripheral face of the tube-like body part.

Abstract: A motor comprises a cylindrical hollow rotary shaft and a rotor member which is fitted over an outer circumference of an axial end of the rotary shaft fixed by a tight fit. A bottom portion is integrally provided to the axial end portion of the rotary shaft, to which the rotor member is fixed, to close an opening at the end portion. The bottom portion has a through hole to interconnect a space inside the rotary shaft with a space outside.

Abstract: A circumferential confronting type motor includes an armature core that has drive coils wound around its plurality of poles, and a drive magnet positioned opposite to the armature core in the radial direction. The drive magnet has a plurality of divided magnetized sections, each with a magnetic center, formed separated from each other in the axial direction by a non-magnetized section. The magnetic centers of the respective plurality of divided magnetized sections are provided in symmetrical positions with respect to a magnetic center in the axial direction of the armature core. Further, electromagnetic action between the drive magnet and the armature core causes the two to rotate relatively, while magnetic action between the plurality of divided magnetized sections and the armature core regulates their relative movements in the axial direction.

Abstract: A circumferential confronting type motor includes an armature core that has drive coils wound around its plurality of poles, and a drive magnet positioned opposite to the armature core in the radial direction. The drive magnet has a plurality of divided magnetized sections, each with a magnetic center, formed separated from each other in the axial direction by a non-magnetized section. The magnetic centers of the respective plurality of divided magnetized sections are provided in symmetrical positions with respect to a magnetic center in the axial direction of the armature core. Further, electromagnetic action between the drive magnet and the armature core causes the two to rotate relatively, while magnetic action between the plurality of divided magnetized sections and the armature core regulates their relative movements in the axial direction.