Abstract: When teeth (12) are allocated in a circumferential direction in sequence of a U phase, a V phase and a W phase, a forward wound coil wound on each of the phases is provided as a coil of the U phase, the V phase and the W phase, and a reverse wound coil wound on each of the phases is provided as the coil of a ?U phase, a ?V phase and a ?W phase, the coils are electrically connected between the neighboring segments in an order of the U phase, the ?W phase, the ?W phase, the V phase, the ?U phase, the ?U phase, the W phase, the ?V phase and the ?V phase, and the wire (14) drawn between the armature core (8) and the commutator (10) is drawn around the rotation shaft in the same direction.

Abstract: An electric motor includes a yoke having a cylindrical section, two pairs of permanent magnets disposed at an inner circumferential surface of the cylindrical section to oppose each other, and an armature rotatably supported further inside in a radial direction than the permanent magnets, wherein at least a pair of first flat sections opposing each other in the radial direction are formed at the cylindrical section, and the permanent magnets are disposed at positions distant from the first flat sections.

Abstract: An electric motor equipped with deceleration device (1) is provided with a main shaft component (200) that is formed substantially in a circular rod shape, and has one end portion (201) that is rotatably supported at a substantial center of a bottom portion (111) of a motor housing (110) and another end portion (202) that protrudes towards an outer side through an aperture in the motor housing (110), the main shaft component (200) is fixed to the motor housing (110) via the one end portion (201).

Abstract: In an electric motor apparatus including an electric motor (13), a speed-reduction mechanism (14) which transmits motive power of the electric motor (13), a housing (15) which accommodates the speed-reduction mechanism (14) and the electric motor (13), and a yoke (16a) fixed to an outer portion of the housing (15), the housing (15) is provided with a concave portion (21), a holding hole (18a), and an accommodation chamber (15a). A connector unit (25) is moved along the first direction and installed to a concave portion (21). A brush holder (26) is moved along the second direction and installed to the holding hole (18a). The speed-reduction mechanism (14) is moved along the first direction and accommodated in the accommodation chamber (15a). The yoke (16a) is moved along the second direction and fixed to the housing (15). Therefore, no restriction is imposed on the routing of an external connector connected to the connector unit (25).

Abstract: An electric motor includes a yoke having a plurality of magnetic poles, a rotary shaft, an armature core (8) attached to the rotary shaft, the armature core (8) having a plurality of teeth (12) and slots (13), an armature coil (9) wound on the teeth (12) through an intensive winding method, a commutator having a plurality of segments (15) installed at the rotary shaft and disposed in a circumferential direction, a low speed brush (21a) and a high speed brush (21b) configured to supply power to the armature coil (9) via the segments (15), and a common brush (21c) commonly used in these brushes, wherein, when n is a natural number of 3 or more, a ratio of the numbers of magnetic poles, slots (13), and segments (15) is set to 2:3:3n.

Abstract: A wiper motor 10 has a reduction mechanism 29 for reducing the rotational speed of a motor shaft 25 and transmitting the reduced speed, and a motion conversion mechanism 31 for converting the rotational motion of the reduction mechanism 29 into a rotational motion and transmitting the motion to the output shaft 30. A pair of first connection holes 50 and a pair of second connection holes 51 are formed on a worm wheel 35 at a position deviated in a radial direction from an axial center of the worm wheel so that each of the holes is opened at the side of one axial end side. The worm wheel 35 can be used for both cases in which the output shaft 30 is swung within a first swinging region and in which the output shaft 30 is swung within a second swinging region.

Abstract: A wiper motor (10) comprises: a motor body (11) comprising a motor case (13) rotatably supporting an end of the motor shaft (17) in the axial direction thereof; a reduction mechanism (26) reducting the speed of rotation of the motor shaft (17) and transmitting the rotation having the reduced speed to a worm wheel (35); and a motion conversion mechanism (29) converting the rotational motion of the worm wheel (35) into a rocking motion and transmitting the rocking motion to an output shaft (28). The position of the output shaft (28) is set up that the axis (C1) of the output shaft (28) is closer to the motor case (13) than the axis (C2) of the worm wheel (35) and farther from the axis (C2) of the worm wheel (35) than the axis (C) of the motor shaft (17).

Abstract: A wiper motor of the present invention comprises: a reduction mechanism (26) for reducing the speed of rotation of the motor shaft (17) and transmitting the rotation to a worm wheel (35) and a motion conversion mechanism (29) for converting the rotary motion of the worm wheel (35) into a rocking motion and outputting the rocking motion to an output shaft (28). The reduction mechanism (26) is contained in the reduction mechanism containing chamber (27) of a gear frame (21), and the motion conversion mechanism (29) is contained in the motion conversion mechanism containing chamber (30) of the gear frame (21). A support surface (37) set up flush with the other end surface (35b) of the worm wheel (35) in the axial direction rotatably contained in the reduction mechanism containing chamber (27) is formed on the inner surface of the bottom wall (30a) of the motion conversion mechanism containing chamber (30).