Support structure with integral retainer tabs for use in spindle motor wire routing
View Patent ↗A base plate for magnetic disk drives is provided that includes a hooked protrusion integrated therein between adjacent spindle motor coils. The cross-over wires that span between adjacent coils are secured by the hooked protrusions, thereby optimizing coil height and reducing manufacturing steps. The hook-like protrusions of one embodiment of the present invention are preferably stamped into the base plate.
1. An apparatus comprising:
a motor including a stator and a rotor;
a base plate, wherein the stator is mounted on the base plate, wherein the stator includes a plurality of stator teeth with windings on each stator tooth; and
wire routing tabs disposed on said base plate between adjacent stator teeth, wherein the wire routing tabs include at least two wire routing tabs positioned between each pair of adjacent stator teeth.
2. The apparatus of claim 1 , wherein said wire routing tabs are integral with the base plate.
3. The apparatus of claim 1 , wherein the at least two wire routing tabs are radially aligned relative to an axis of rotation of the motor.
4. The apparatus of claim 3 , wherein a first wire routing tab of the wire routing tabs is a first curved member with one end interconnected to said base plate and a second wire routing tab of the wire routing tabs is a second curved member with one end that is interconnected to said base.
5. The apparatus of claim 1 , wherein the base plate comprises:
a planar member, said planar member having a perimeter edge; and
a raised ridge on the planar member, the raised edge being configured for positioning the stator,
wherein the wire routing tabs are disposed on the planar member inside of said raised ridge and wherein said wire routing tabs are adapted to secure wires of the stator.
6. The apparatus of claim 5 , wherein said wire routing tabs are spaced a predetermined distance from each other and lie on a radial emanating from a center of an aperture in said base plate that is adapted to receive a hub.
7. The apparatus of claim 5 , wherein said wire routing tabs are selectively bendable thereby providing a customizable base plate.
8. The apparatus of claim 1 , further comprising at least one rotatable storage disk, wherein the motor is for causing rotation of the at least one disk.
9. An apparatus comprising:
a motor including a stator and a rotor;
a base plate, wherein the stator is mounted on the base plate, wherein the stator includes a plurality of stator teeth with windings on each stator tooth; and
wire routing tabs disposed on said base plate between adjacent stator teeth, wherein said wire routing tabs are separate from said base plate, and are interconnected to said base plate.
10. The apparatus of claim 9 , further comprising at least one rotatable storage disk, wherein the motor is for causing rotation of the at least one disk.
11. An apparatus comprising:
a motor including a stator and a rotor;
a base plate, wherein the stator is mounted on the base plate, wherein the stator includes a plurality of stator teeth with windings on each stator tooth; and
wire routing tabs disposed on said base plate between adjacent stator teeth, wherein said wire routing tabs are selectively bendable thereby providing a customizable plate.
12. The apparatus of claim 11 , wherein said wire routing tabs are integrated into said base plate.
13. The apparatus of claim 11 , wherein said wire routing tabs are interconnected to said base plate.
14. The apparatus of claim 11 , wherein said wire routing tabs comprise curved members with one end interconnected to said base plate.
15. The apparatus of claim 11 , wherein at least one wire routing tab is disposed between each pair of adjacent stator teeth.
16. The apparatus of claim 11 , further comprising at least one rotatable storage disk, wherein the motor is for causing rotation of the at least one disk.
17. An apparatus, comprising:
a base plate;
a spindle motor interconnected to said base plate, said spindle motor having a generally circular stator yoke with a plurality of wire coils extending inwardly from said yoke, said wire coils are interconnected in phases by cross over wires; and
first and second tabs located between each pair of adjacent wire coils,
wherein said first and second tabs secure the cross over wires that interconnect the plurality of wire coils.
18. The apparatus of claim 17 , wherein said stator yoke comprises a first coil, a fourth coil and a seventh coil interconnected by a first cross over wire defining a first phase; a second coil, a fifth coil and an eighth coil interconnected by a second cross over wire defining a second phase; and a third coil, a sixth coil and a ninth coil interconnected by a third cross over wire defining a third phase; and
wherein each of said first, second and third cross over wires being retained by at least one of said first and second tabs as said first, second and third cross over wires are routed between the coils of each phase.
19. The apparatus of claim 17 , further comprising a rotatable media mounted to the spindle motor.
20. A method comprising:
a. obtaining a support structure;
b. positioning a multi-phase stator on the support structure, the stator comprising a plurality of stator teeth having a wire coil wound about each of the plurality of stator teeth, the stator further comprising cross over wires extending from one wire coil to another within each phase; and
c. routing the cross over wires around routing tabs disposed between the individual stator teeth of the plurality of stator teeth, said routing tabs disposed on said support structure.
21. The method of claim 20 , wherein said routing tabs are integral with the support structure.
22. The method of claim 21 , further comprising deploying the routing tabs as needed to retain the cross over wires.
23. The method of claim 20 , wherein said support structure is a base plate.
24. The method of claim 20 , further comprising moving the routing tabs from a first position to a second position, wherein the routing tabs cannot route a wire when in said first position but said routing tabs can route a wire when in the second position.
25. The method of claim 20 , wherein the stator comprises a generally circular yoke, further comprising routing the cross over wires form one wire coil to another among the routing tabs and along the yoke.
26. A method comprising:
a. obtaining a stator core, the stator core comprising a generally circular yoke and a plurality of teeth extending radially inwardly from the yoke, the teeth having a proximate end connected to said yoke and a distal end opposite the proximate end;
b. winding wire around each of the individual teeth to form a stator coil around each tooth, each stator coil comprising at least one layer of windings;
c. connecting a first subset of the plurality of teeth with a first wire to form a first phase of a spindle motor, and further including first cross over wire portions extending between the plurality of teeth forming the first phase;
d. connecting a second subset of the plurality of teeth with a second wire to form a second phase of the spindle motor, and further including second cross over wire portions extending between the plurality of teeth forming the second phase;
e. positioning the stator core with the stator coils on a support structure; and
f. routing the first and second cross over wire portions around retaining tabs disposed between adjacent stator coils and formed on the support structure.
27. The method of claim 26 , further comprising forming each stator coil with an odd number of winding layers.
28. The method of claim 26 , further comprising starting the windings for at least one of the stator coils at the distal end of one of the teeth.
29. The method of claim 26 , further comprising finishing the windings of at least one of the stator coils at the distal end of one of the teeth.
30. The method of claim 26 , further comprising forming two retaining tabs between at least two adjacent stator coils.
31. The method of claim 26 , further comprising forming two retaining tabs between each adjacent pair of stator coils.
32. The method of claim 26 , further comprising routing some of the first cross over wire portions around two of the retaining tabs positioned between two adjacent stator coils.
33. The method of claim 26 , further comprising routing some of the first and second cross over wire portions around the same retaining tabs.
34. An apparatus comprising:
a support structure;
a stator mounted on said support structure, said stator comprising a substantially circular yoke and a plurality of teeth extending radially inwardly from the yoke, the teeth having a proximate end joined to the yoke and a distal end opposite the proximate end;
a wire coil wound around each tooth, each coil comprising at least one layer of windings, the coils connected by cross over wires in phases to form a multi-phase stator,
wherein at least one wire coil has an odd number of winding layers; and
wire routing tabs formed on said support structure and disposed between adjacent teeth, wherein at least portions of the cross over wires are secured by the routing tabs.
35. The apparatus of claim 34 , wherein at least one of the wire coils starts at the distal end of one of the teeth.
36. The apparatus of claim 34 , wherein at least one of the wire coils terminates at the distal end of one of the teeth.
37. The apparatus of claim 34 , wherein said support structure comprises a base plate.
38. The apparatus of claim 34 , wherein said support structure comprises a first planar portion and said routing tabs are formed from said first planar portion.
39. The apparatus of claim 38 , wherein the routing tabs are movable between a first position in which the routing tabs and first planar potion are co-planar, and a second position in which the routing tabs and first planar portion are not co-planar.
40. The apparatus of claim 34 , further comprising:
a motor, wherein the motor includes the stator; and
at least one rotatable storage disk, wherein the motor is for causing rotation of the at least one disk.