1. A stator core for a motor, comprising:
three split cores arranged to surround a rotatably-held rotor, each of the split cores including:
a core-back portion including an inner surface facing the rotor;
a tooth base portion protruding radially inwards from the inner surface of the core-back portion; and
a pair of tooth overhang portions protruding from both sides of a tip end of the tooth base portion in a circumferential direction; wherein
the core-back portions are connected through connecting walls arranged at circumferential ends thereof to one another to define a substantially cylindrical shape;
the inner surfaces of the core-back portions include a pair of orthogonal surface regions extending from both sides of a base end of the tooth base portion in a direction orthogonal or substantially orthogonal to the tooth base portion, the orthogonal surface regions extending radially outwards beyond projection positions of tip ends of the tooth overhang portions when the tooth overhang portions are projected on an imaginary plane including the orthogonal surface regions in parallel or substantially in parallel to the tooth base portion;
a half of a total distance between outermost circumferential ends of the pair of orthogonal surface regions minus half of a circumferential distance between both sides of the base end of the tooth base portion is smaller than a total length of the connecting walls; and
a total distance between the imaginary plane and circumferential tips of the connecting walls is larger than a total distance between the imaginary plane and bases of the tooth overhang portions.
2. The stator core of claim 1, wherein each of the split cores includes an insulator provided on a surface thereof, the orthogonal surface regions extending radially outwards beyond projection positions of the tip ends of the tooth overhang portions on the insulator when the tooth overhang portions are projected toward the imaginary plane including the orthogonal surface regions in parallel or substantially in parallel to the tooth base portion.
3. The stator core of claim 2, wherein the inner surfaces of the core-back portions further include circumferentially-curved bending surface regions continuously extending from outer ends of the orthogonal surface regions.
4. The stator core of claim 3, wherein the core-back portions include a radially outer surface extending parallel or substantially parallel to the orthogonal surface regions of the inner surfaces of the core-back portions.
5. The stator core of claim 2, wherein the core-back portions include a radially outer surface extending parallel or substantially parallel to the orthogonal surface regions of the inner surfaces of the core-back portions.
6. The stator core of claim 5, wherein a dimension of a gap provided between the tip ends of the tooth overhang portions adjoining to each other when the split cores are connected to one another is smaller than the distance between each of the projection positions of the tip ends of the tooth overhang portions and each of the outer ends of the orthogonal surface regions.
7. The stator core of claim 2, wherein the core-back portions include an axially-extending fastening hole defined in an area near a radially outer surface of the core-back portions radially opposite to the tooth base portions.
8. The stator core of claim 1, wherein the inner surfaces of the core-back portions further include circumferentially-curved bending surface regions extending continuously from outer ends of the orthogonal surface regions.
9. The stator core of claim 8, wherein a distance between each of the projection positions of the tip ends of the tooth overhang portions and each of the outer ends of the orthogonal surface regions is within a range of about 2 mm to about 3 mm greater than a diameter of a conductive wire wound on the tooth base portion.
10. The stator core of claim 9, wherein a dimension of a gap provided between the tip ends of the tooth overhang portions adjoining to each other when the split cores are connected to one another is smaller than a distance between each of the projection positions of the tip ends of the tooth overhang portions and each of the outer ends of the orthogonal surface regions.
11. The stator core of claim 9, wherein the core-back portions include an axially-extending fastening hole defined in an area near a radially outer surface of the core-back portions radially opposite to the tooth base portions.
12. The stator core of claim 8, wherein the core-back portions include a radially outer surface extending substantially parallel or substantially to the orthogonal surface regions of the inner surfaces of the core-back portions.
13. The stator core of claim 8, wherein a dimension of a gap provided between the tip ends of the tooth overhang portions adjoining to each other when the split cores are connected to one another is smaller than a distance between each of the projection positions of the tip ends of the tooth overhang portions and each of the outer ends of the orthogonal surface regions.
14. The stator core of claim 13, wherein the core-back portions include an axially-extending fastening hole defined in an area near a radially outer surface of the core-back portions radially opposite to the tooth base portions.
15. The stator core of claim 8, wherein the core-back portions include an axially-extending fastening hole defined in an area near a radially outer surface of the core-back portions radially opposite to the tooth base portions.
16. The stator core of claim 1, wherein the core-back portions include a radially outer surface extending parallel or substantially parallel to the orthogonal surface regions of the inner surfaces of the core-back portions.
17. The stator core of claim 16, wherein a dimension of a gap provided between the tip ends of the tooth overhang portions adjoining to each other when the split cores are connected to one another is smaller than a distance between each of the projection positions of the tip ends of the tooth overhang portions and each of the outer ends of the orthogonal surface regions.
18. The stator core of claim 16, wherein the core-back portions include an axially-extending fastening hole defined in an area near a radially outer surface of the core-back portions radially opposite to the tooth base portions.
19. The stator core of claim 1, wherein the core-back portions include an axially-extending fastening hole defined in an area near a radially outer surface of the core-back portions radially opposite to the tooth base portions.
20. The motor comprising the stator core of claim 1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A system for policy-based control of a label switching network carrying one or more of voice and data traffic, the system comprising:
a central office, the central office including a trunk gateway;
the label switching network being coupled to the trunk gateway of the central office;
a network administration system, the network administration system including a plurality of policies stored in a policy repository each policy of at least a subset of the plurality of policies controlling, at least in part, the operation of the label switching network wherein a policy is one of an admission policy and a life cycle policy wherein further an admission policy maps packet traffic flows onto one or more label switched paths within the label switching network and a life cycle policy creates, deletes and monitors the one or more label switched paths within the label switching network; and
a call control complex, the call control complex coupled to the network administration system and the label switching network.
2. The system of claim 1, wherein the gateway is one of a line gateway, a trunk gateway, and a service gateway.
3. The system of claim 1, wherein the central office includes class five central office equipment.
4. The system of claim 1, wherein the network administration system includes one or more of traffic management information and device provisioning information.
5. The system of claim 1, wherein the plurality of policies include a plurality of traffic management policies.
6. The system of claim 1, wherein the call control complex is to send voice service traffic data to the network administration system.
7. The system of claim 6, wherein the network administration system is to send voice service label switched path provisioning policies to the label switching network.
8. The system of claim 6, wherein the network administration system is to send virtual private network provisioning policies to the label switching network.
9. The system of claim 1, wherein the label switching network is a multiprotocol label switching (\u201cMPLS\u201d), the system further comprising an SS7AIN network coupled to the call control complex.
10. The system of claim 9, wherein the SS7AIN network and the MPLS network are part of a regional telecommunications company network.
11. A method of operating a label switching network with policy based management, the method comprising:
operating at least a portion of the label switching network based at least in part on a first policy, wherein a policy is one of an admission policy and a life cycle policy wherein further an admission policy maps packet traffic flows onto one or more label switched paths within the label switching network and a life cycle policy creates and deletes the one or more label switched paths within the label switching network;
receiving a control input;
selecting a second policy based at least in part on the control input, the second policy being different from the first policy; and
operating at least the portion of the label switching network based at least in part on the second policy.
12. The method of claim 11, wherein operating at least a portion of the label switching network based at least in part on a first policy includes operating at least a portion of the label switching network as one or more voice trunks based at least in part on a first voice traffic policy.
13. The method of claim 12, wherein receiving a control input includes receiving a voice traffic condition.
14. The method of claim 13, wherein the voice traffic condition is selected from the group consisting of time of day, measured voice traffic demand, estimated voice traffic demand, projected voice traffic demand, and a customer request.
15. The method of claim 12, wherein receiving the control input includes receiving network status information from a network device of the label switching network.
16. The method of claim 11, wherein operating at least a portion of the label switching network based at least in part on a first policy includes operating at least a portion of the label switching network as one or more virtual private networks based at least in part on a first virtual network policy.
17. A method for policy-based management of a label switching network, the method comprising:
a step for operating at least a portion of the label switching network based at least in part on a first policy, wherein a policy is one of an admission policy and a life cycle policy wherein further an admission policy maps packet traffic flows onto one or more label switched paths within the label switching network and a life cycle policy creates deletes and configures the one or more label switched paths within the label switching network;
a step for receiving a control input;
a step for selecting a second policy based at least in part on the control input, the second policy being different from the first policy; and
a step for operating at least the portion of the label switching network based at least in part on the second policy.
18. The method of claim 17, wherein the first policy is selected from the group consisting of a voice traffic management policy, a virtual private network management policy, and a quality of service management policy.