Non-circular, flat motor
AssigneeTokyo Parts Industrial Co., Ltd.
InventorTadao Yamaguchi
Life of this patent
Estimating the term…
Abstract
A non-circular flat motor in which terminal portions are installed at dead spaces and a manufacturing method. The motor can be easily held by a transferring apparatus and automatically mounted. The feeder terminal is easily reflow soldered. A rotor and a housing supporting the rotor are non-circular when in a plane perpendicular to the rotor axis. Feeder terminals or installation terminals are arranged at corners of surfaces of the housing. At least one feeder terminal is insulated from other portions of the housing. The corners may be concave so that each of the terminals does not protrude beyond the housing. Each of the terminals is easily reflow-soldered and exposed at the side of the housing.
Claims16
A non-circular flat motor comprising:
- a rotor having an axial direction;
- a stator base having a shaft supporting the rotor and that is centrally located on the stator base;
- a housing having a metal portion and a non-circular shape in a plane perpendicular to the axial direction, and being at least partially a resin;
- and
- at least two feeder terminals arranged at a corner of the housing, on a side surface of the housing and, electrically insulated from the metal portion of the housing.
A non-circular flat motor comprising:
- a rotor having an axial direction;
- a housing which is non-circular in a plane perpendicular to the axial direction, which rotatably supports the rotor, and which has side surfaces, at least a part of which are flat, and which includes a stator base;
- an armature coil at the stator base;
- a flat magnet on the rotor facing the armature coil and spaced from the armature coil by a gap;
- a plurality of feeder terminals arranged at the side surfaces, at corners of the housing, and electrically insulated from adjacent portions of the motor;
- a bracket as part of the housing and on which the magnet is disposed;
- and
- a pair of brushes, at least one of the brushes being connected to the feeder terminals through a first gap between the bracket and the magnet as insulation, wherein the rotor receives electric power via the brushes and faces the flat magnet across a second gap in the axial direction.
A non-circular flat motor comprising:
- a rotor having an axial direction;
- a housing which is non-circular in a plane perpendicular to the axial direction, which rotatably supports the rotor, and which has side surfaces, at least a part of which are flat, and which includes a stator base;
- an armature coil at the stator base;
- a magnet on the rotor facing the armature coil and spaced from the armature coil by a gap;
- a plurality of feeder terminals arranged at the side surfaces, at corners of the housing, and electrically insulated from adjacent portions of the motor;
- a metal plate incorporating at a center, a shaft support, the metal plate forming a first part of the housing;
- a fixed shaft supported by the shaft support, the rotor being rotatably installed at a tip of the fixed shaft;
- and
- a plurality of armature coils arranged around the fixed shaft to drive the rotor, wherein a second part of the housing supports the tip of the fixed shaft.
Dependencies are inferred from the claim text.