Stator interconnect ring
First Claim
Patent Images
1. An improved motor stator assembly comprising:
- a hollow shaft for supporting said stator,a plug connector carrying a plurality of connector wires which are to be led to connection points on said stator,said stator comprising a yoke, carrying a plurality of laminations, and windings on said yoke including lead wires which are led out to be connected to said connector wires, anda flat stator interconnect ring having first and second flat surfaces fastened flat against and on top of an end of said yoke and radially within the windings and having bonding pads on a first of said surfaces connected by appropriate interconnection traces thereon to connect selected ones of said bonding pads together, said stator lead wires and said connector wires being connected to said bonding pads so that control signals for energizing said stator may be passed through said connector to said stator interconnect ring to energize said motor.
9 Assignments
0 Petitions
Accused Products
Abstract
A spindle motor incorporates a hollow shaft and a prewound stator having an interconnect ring attached to one end of the stator assembly. The interconnect ring is preferably a printed circuit or flexible printed circuit; it is bonded to the stator stack before the coils are wound, and the start and finish of each phase winding is terminated to the interconnect ring. Once the stator is assembled onto the shaft, connector wires can be fed up through the shaft and terminated at the interconnect ring. Traces on the interconnect ring join the wires to the proper phases and to the commons to control motor operation.
8 Citations
14 Claims
-
1. An improved motor stator assembly comprising:
-
a hollow shaft for supporting said stator, a plug connector carrying a plurality of connector wires which are to be led to connection points on said stator, said stator comprising a yoke, carrying a plurality of laminations, and windings on said yoke including lead wires which are led out to be connected to said connector wires, and a flat stator interconnect ring having first and second flat surfaces fastened flat against and on top of an end of said yoke and radially within the windings and having bonding pads on a first of said surfaces connected by appropriate interconnection traces thereon to connect selected ones of said bonding pads together, said stator lead wires and said connector wires being connected to said bonding pads so that control signals for energizing said stator may be passed through said connector to said stator interconnect ring to energize said motor. - View Dependent Claims (2, 3, 4)
-
-
5. An improved spindle motor comprising a central shaft adapted to be supported in a base of a disc drive,
bearings mounted on said shaft and supporting a hub for rotation about said shaft, said hub supporting a magnet on an interior surface thereof, an integrated stator assembly supported on an outer surface of said shaft, said stator assembly comprising a yoke supporting a plurality of laminations, and windings on said yoke including lead wires which are led out to be connected to a stator interconnect ring fastened flat against and on top of an end of said yoke and radially within the windings and having bonding pads connected by appropriate traces on a first surface of said ring to connect selected ones of said bonding pads together and having control wires leading therefrom, said stator lead wires and said control wires being connected to said bonding pads so that control signals for energizing said stator may be passed through said connector to said stator, said stator interconnect ring having a second flat surface fastened to a top surface of said yoke, said ring not extending beyond said yoke, said fastening of said ring to said yoke not extending axially above or below said ring.
- 9. An integrated stator assembly adapted to be supported on an outer surface of a shaft, said stator assembly comprising a yoke supporting a plurality of laminations, and windings on said yoke including lead wires which are led out to be connected to a stator interconnect ring fastened flat against and on a top of an end of said yoke and radially within the windings, said stator interconnect ring extending only radially across said top of said stator and having first and second surfaces, said first surface having bonding pads connected by appropriate traces on said ring to connect selected ones of said bonding pads together and having control wires leading therefrom, said stator lead wires and said control wires being connected to said bonding pads so that control signals for energizing said stator may be passed through said stator interconnect ring to said stator windings.
- 13. A stator interconnect ring having only first and second substantially flat composed surfaces and adapted to be utilized in combination with an integrated stator assembly supported on an outer surface of a motor shaft, said stator assembly comprising a yoke supporting a plurality of laminations, and windings on said yoke including lead wires which are led out to be connected to bonding pads on said first surface of said stator interconnect ring, said second surface being adhesively fastened flat against an end surface of said yoke and radially within the windings and having bonding pads connected by appropriate traces on said first flat surface on said ring to connect selected ones of said bonding pads together, said interconnect ring bonding pads adapted to bond wires thereto so that control signals for energizing said stator may be passed through said interconnect ring to said stator.
Specification