Stator and brushless motor and motor actuator using the stator
AssigneeTokyo Parts Industrial Co., Ltd.
InventorMasahiro Nishidate
Life of this patent
Estimating the term…
Abstract
A stator has a core, an insulating member that covers the core, windings that are wound around the insulating member, and conductive members that supply drive power to the windings. The conductive member has a joining part that contacts a lower surface of the insulating member, an insertion part that rises axially upward from one end of the joining part, and a board connection part that descends axially downward from the other end of the joining part. The insertion part penetrates through the insulating member and protrudes at the top of the stator, where it is connected to a coil end. The board connection part is fixed, by a method such as press-fitting, to a circuit board on which a Hall element or the like is mounted.
Claims17
A stator, which is a component of a brushless motor, and which generates a rotating magnetic field with respect to a rotor that can rotate around a central axis, wherein:
- the stator has
- a core comprising a magnetic body,
- an insulating member that covers the core,
- a winding that is wound on the insulating member, and
- a conductive member for supplying drive power to the winding;
- the conductive member comprises
- a joining part that is in contact with the lower surface of the insulating member,
- an insertion part that rises axially upward from one end of the joining part, and
- a board connection part descending axially downward from the other end of the joining part;
- the insulating member has a penetrated part for penetration in the axial direction by the insertion part;
- and
- the insertion part is inserted into the penetrated part from below the insulating member, penetrates the penetrated part, and is electrically connected to the winding above the insulating member.
A brushless motor comprising a stator, a rotor rotated by a rotating magnetic field produced by the stator, and a circuit board, wherein:
- the stator has
- a core comprising a magnetic body,
- an insulating member that covers the core,
- a winding that is wound on the insulating member, and
- a conductive member for supplying drive power to the winding;
- the conductive member comprises
- a joining part that is in contact with the lower surface of the insulating member,
- an insertion part that rises axially upward from one end of the joining part, and
- a board connection part descending axially downward from the other end of the joining part;
- the insulating member has a penetrated part for penetration in the axial direction by the insertion part;
- the insertion part is inserted into the penetrated part from below the insulating member, penetrates the penetrated part, and is electrically connected to the winding above the insulating member;
- and
- the board connection part is electrically connected to the circuit board.
A motor actuator that transmits rotational driving force of a motor while reducing the speed by way of a gear mechanism, and outputs the rotational driving force of the motor to the outside with an output shaft, wherein
- the motor actuator has a stator,
- a rotor that is supported coaxially with the stator and is rotated by a rotating magnetic field produced by the stator,
- a circuit board having a through-hole,
- a rotational support part that rotatably supports the rotor,
- a gear mechanism that transmits the rotational driving force of the rotor while reducing the speed,
- an output shaft that outputs the rotational driving force to the outside, and
- a case;
- the stator has
- a core comprising a magnetic body,
- an insulating member that covers the core,
- a winding that is wound on the insulating member, and
- a conductive member for supplying drive power to the winding;
- the conductive member comprises
- a joining part that is in contact with the lower surface of the insulating member,
- an insertion part that rises axially upward from one end of the joining part, and
- a board connection part descending axially downward from the other end of the joining part;
- the insulating member has a penetrated part for penetration in the axial direction by the insertion part;
- the insertion part is inserted into the penetrated part from below the insulating member, penetrates the penetrated part, and is electrically connected to the winding above the insulating member;
- the stator is fixed in a stator retaining part that is provided on the case;
- and
- the board connection part and the circuit board are electrically connected by way of the through hole.
Dependencies are inferred from the claim text.