摘要:
A motor according to the present invention includes bearing (11) which includes: inner ring (11a) having upper end surface (11d), outer ring (11b), and balls (11c) between inner ring (11a) and outer ring (11b). Pressurizing spring (12) is inserted onto rotary shaft (3), is located between core (4) and bearing (11), and provides bias forces in the axial direction of rotary shaft (3). Outer ring (11b) is pressed to fit into bearing holding part (9a). Inner ring (11a) is fitted onto rotary shaft (3) with gap (15) therebetween. Upper end surface (11d) of inner ring (11a) is in contact with pressurizing spring (12). Pressurizing spring (12) applies the bias forces of different strengths onto a surface in which upper end surface (11d) contacts with pressurizing spring (12), along a circumferential direction with the axial direction as a center.
摘要:
A commutator motor is configured such that an armature includes an armature core having teeth and slots, an armature coil, and a commutator having segments. The armature coil includes coil units in which windings are wound on the teeth, and jumper wire units for interconnecting between the coil units. Segment group includes first and second segments to which the coil units are connected, and a third segment to which only the jumper wire unit is connected. The first and second segments are disposed adjacent to each other, and the third segment is disposed next to the adjacent arrangement. The configuration includes the jumper wire unit that is wired from the third segment such that each of one part of the wire unit running to one side and the other part of the wire unit running to the other side is wired to pass through the same slot to interconnect between the coil units.
摘要:
This brush holder assembly includes: a brush holder formed in a disk shape by molding of insulating resin, and including a pair of box fixing sections each including a groove formed from an outer peripheral side toward inside: and brush box assemblies each having a brush box which houses a brush therein, each of the brush box assemblies being disposed in the box fixing section. Each of the brush box assemblies is formed of box-like metal, and has a plurality of mounting legs. Additionally, each of the box fixing sections of the brush holder has a plurality of mounting holes. In this brush holder assembly, these mounting legs are inserted into the respective mounting holes, and the brush box assembly is fixed. Furthermore, in the brush holder assembly of the present invention, the brush holder assemblies face the brush holder through gaps. Additionally, a commutator motor of the present invention includes the above brush holder assembly.