IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0229129
(2011-09-09)
|
등록번호 |
US-8659215
(2014-02-25)
|
우선권정보 |
JP-2010-202100 (2010-09-09) |
발명자
/ 주소 |
- Nagayama, Takashi
- Shiraishi, Shigetomo
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
6 |
초록
▼
According to one embodiment, a motor has a cylindrical stator core and rotor. A first framework is fixed to a side of the stator core in an axial direction, and a first bearing housing is fixed to the outside of the first framework. A second framework is fixed to the other side of the stator core. A
According to one embodiment, a motor has a cylindrical stator core and rotor. A first framework is fixed to a side of the stator core in an axial direction, and a first bearing housing is fixed to the outside of the first framework. A second framework is fixed to the other side of the stator core. A second bearing housing is fixed to the outside of the second framework. The rotor has a rotational shaft, supported by the bearings, extending into the frameworks. A rotor core is attached to the shaft. Support bases are fixed to the rotor, and are interposed by the rotor core. A locking member coupled to the first framework is configured to contact the first support base. A locking member coupled to the second framework is configured to contact the second support base. The rotor is fixed by the locking members contact with the support bases.
대표청구항
▼
1. A motor comprising: a cylindrical stator core;a first framework fixed to the first side of the stator core in an axial direction;a first bearing housing fixed to the outside of the first framework, wherein the first bearing housing holds a bearing;a second framework fixed to the second side of th
1. A motor comprising: a cylindrical stator core;a first framework fixed to the first side of the stator core in an axial direction;a first bearing housing fixed to the outside of the first framework, wherein the first bearing housing holds a bearing;a second framework fixed to the second side of the stator core in the axial direction;a second bearing housing fixed to the outside of the second framework, wherein the second bearing housing holds a bearing;a rotor comprising: a rotational shaft rotatably supported by the bearings, wherein the rotational shaft extends into the first and second frameworks;a rotor core attached to the rotational shaft, wherein the rotor core faces an inner side of the stator core; anda first support base and a second support base fixed to the rotor, wherein the first support base and the second support base are interposed by the rotor core;a first locking member movably coupled to the first framework, wherein the first locking member is configured to move along the axial direction of the rotational shaft toward a side of the rotor core to contact the first support base and fix the rotor; anda second locking member movably coupled to the second framework, wherein the second locking member is configured to move along the axial direction of the rotational shaft toward a side of the rotor core to contact the second support base and fix the rotor. 2. The motor of claim 1, wherein: the second framework further comprises an outward ring-shaped first protrusion at an inner opening of the second framework at a side of the second bearing housing;the second bearing housing further comprises a flange formed with a ring-shaped groove;the second framework is configured to engage the first protrusion with the groove;the second locking member further comprises an outward ring-shaped second protrusion; andthe second locking member is configured to engage an outer peripheral surface of the outward ring-shaped protrusion with an inner peripheral surface of the second framework. 3. The motor of claim 1, wherein: the second framework further comprises an outward ring-shaped first protrusion and an inward ring-shaped second protrusion;the second bearing housing further comprises a flange integrally formed with a ring-shaped groove;the second framework is configured to engage the first protrusion with the groove; andthe second locking member is configured to engage an outer peripheral surface of the second locking member with an inner peripheral surface of the second protrusion. 4. The motor of claim 1, wherein: the second framework further comprises an outward ring-shaped first protrusion formed at an end of an opening at a side of the second bearing housing;the second bearing housing further comprises a flange formed with a ring-shaped groove;the second framework is configured to engage the first protrusion with the groove;the second locking member further comprises an outward ring-shaped second protrusion;the second locking member is configured to contact an inner surface of the second framework, engage an outer peripheral surface of the second protrusion with an inner peripheral surface of the opening at the side of the second bearing housing, and engage an inner peripheral surface of the second protrusion with an outer peripheral surface of the second bearing housing. 5. The motor of claim 1, wherein: the second framework further comprises an outward ring-shaped first protrusion formed at an end of an opening at a side of the second bearing housing;the second bearing housing further comprises a flange formed with a ring-shaped groove;the second framework is configured to engage the first protrusion with the groove and contact an outer peripheral surface of the first protrusion with the second bearing housing;the second locking member further comprises an outward ring-shaped second protrusion; andthe second locking member is configured to engage an outer peripheral surface of the second protrusion with an inner peripheral surface the opening of the second framework at the side of the second bearing housing, and engage an inner peripheral surface of the second protrusion with an outer peripheral surface of the second bearing housing. 6. A motor comprising: a cylindrical stator core;a first framework fixed to the first side of the stator core in an axial direction;a first bearing housing fixed to the outside of the first framework, wherein the first bearing housing holds a bearing;a second framework fixed to the second side of the stator core in the axial direction;a second bearing housing fixed to the outside of the second framework, wherein the second bearing housing holds a bearing;a rotor comprising: a rotational shaft rotatably supported by the bearings, wherein the rotational shaft extends into the first and second frameworks;a rotor core attached to the rotational shaft, wherein the rotor core faces an inner side of the stator core; anda first support base and a second support base fixed to the rotor, wherein the first support base and the second support base are interposed by the rotor core;a first locking member movably coupled to the first framework, wherein the first locking member is configured to move along the axial direction of the rotational shaft toward a side of the rotor core to contact the first support base and fix the rotor;a second locking member movably coupled to the second framework, wherein the second locking member is configured to move along the axial direction of the rotational shaft toward a side of the rotor core to contact the second support base and fix the rotor;a first partition plate fixed to the rotor between the rotor core and a first bearing portion; anda second partition plate fixed to the rotor between the rotor core and a second bearing portion. 7. The motor according to claim 6, wherein: the first framework and the second framework further comprise a framework engagement portion comprising an outer ring-shaped portion and an inner ring-shaped portion defining a framework channel;the first partition plate and the second partition plate further comprise a plate engagement portion comprising an outer ring-shaped portion and an inner ring-shaped portion defining a partition plate channel;the first partition plate and the second partition plate are configured to engage the outer ring-shaped portion of the plate engagement portion with the framework channel and engage the inner ring-shaped portion of the framework engagement portion with the partition plate channel; andthe first partition plate and the second partition plate are rotatable integrally with the rotational shaft. 8. The motor according to claim 7, wherein the first partition plate comprises a plurality of fins on an surface of the first partition plate facing the first bearing housing and the second partition plate comprises a plurality of fins on an surface of the second partition plate facing the second bearing housing. 9. The motor according to claim 8, wherein the second framework further comprises a bracket formed with a metal material that is different from the other members; and wherein the bracket comprises a ring-shaped first protruding portion doubly engaged with the side of the stator core and a ring-shaped second protruding portion engaged with a groove formed in the second bearing housing. 10. The motor according to claim 9, wherein a space enclosed by the stator core, the first framework, the second framework, the first partition plate, the second partition plate, and the rotor core is substantially insulated from an outside air. 11. The motor according to claim 10, wherein the rotor further comprises a permanent magnet. 12. The motor according to claim 11, wherein the first support base has a tapered surface configured to contact the first locking member and the second support base has a tapered surface configured to contact the second locking member. 13. The motor of claim 12, wherein: the second framework further comprises an outward ring-shaped first protrusion at an inner opening of the second framework at a side of the second bearing housing;the second bearing housing further comprises a flange formed with a ring-shaped groove;the second framework is configured to engage the first protrusion with the groove;the second locking member further comprises an outward ring-shaped second protrusion; andthe second locking member is configured to engage an outer peripheral surface of the outward ring-shaped protrusion with an inner peripheral surface of the second framework. 14. The motor of claim 12, wherein: the second framework further comprises an outward ring-shaped first protrusion and an inward ring-shaped second protrusion;the second bearing housing further comprises a flange integrally formed with a ring-shaped groove;the second framework is configured to engage the first protrusion with the groove; andthe second locking member is configured to engage an outer peripheral surface of the second locking member with an inner peripheral surface of the second protrusion. 15. The motor of claim 12, wherein: the second framework further comprises an outward ring-shaped first protrusion formed at an end of an opening at a side of the second bearing housing;the second bearing housing further comprises a flange formed with a ring-shaped groove;the second framework is configured to engage the first protrusion with the groove;the second locking member further comprises an outward ring-shaped second protrusion;the second locking member is configured to contact an inner surface of the second framework, engage an outer peripheral surface of the second protrusion with an inner peripheral surface of the opening at the side of the second bearing housing, and engage an inner peripheral surface of the second protrusion with an outer peripheral surface of the second bearing housing. 16. The motor of claim 12, wherein: the second framework further comprises an outward ring-shaped first protrusion formed at an end of an opening at a side of the second bearing housing;the second bearing housing further comprises a flange formed with a ring-shaped groove;the second framework is configured to engage the first protrusion with the groove and contact an outer peripheral surface of the first protrusion with the second bearing housing;the second locking member further comprises an outward ring-shaped second protrusion; andthe second locking member is configured to engage an outer peripheral surface of the second protrusion with an inner peripheral surface the opening of the second framework at the side of the second bearing housing, and engage an inner peripheral surface of the second protrusion with an outer peripheral surface of the second bearing housing. 17. A method of maintaining a motor comprising: removing a fixing bolt from a first framework;screwing a pushing bolt into the first framework, wherein a first locking member moves along a rotor into contact with a first support base of the rotor;removing a fixing bolt from a second framework;screwing a pushing bolt into the second framework, wherein a second locking member moves along the rotor into contact with a second support base of the rotor;wherein the contact between the first locking member and the first support base and the contact between the second locking member and the second support base fixes the rotor. 18. The method of claim 17, comprising: removing a bolt that fixes a first bearing housing to the first framework;removing the first bearing housing from the motor;removing a bolt that fixes an end cap to the first bearing housing;removing the end cap; andreplacing an oil lubrication grease in the outer race of a bearing of the first bearing housing. 19. The method of claim 17, comprising: removing a bolt that fixes an end cap to a second bearing housing;removing the end cap;removing a bolt that fixes an end plate to the end of a rotational shaft of the rotor;removing the end plate;removing a bolt that fixes the second bearing housing to the second framework;removing the second bearing housing; andreplacing an oil lubrication grease in the outer race of a bearing of the second bearing housing. 20. The method of claim 17, comprising: removing a bolt that fixes a first bearing housing to the first framework;removing the first bearing housing from the motor;removing a bolt that fixes an end cap to the first bearing housing;removing the end cap;replacing an oil lubrication grease in the outer race of a bearing of the first bearing housing;removing a bolt that fixes an end cap to a second bearing housing;removing the end cap;removing a bolt that fixes an end plate to the end of a rotational shaft of the rotor;removing the end plate;removing a bolt that fixes the second bearing housing to the second framework;removing the second bearing housing; andreplacing an oil lubrication grease in the outer race of a bearing of the second bearing housing;wherein the rotor remains within a stator of the motor.
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