Electric motor cooling having air-communication restrain between intake duct and exhaust duct, and having cooling fan received in yoke
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02K-005/20
H02K-009/06
출원번호
US-0146803
(2002-05-17)
우선권정보
JP-0155603 (2001-05-24); JP-0293064 (2001-09-26)
발명자
/ 주소
Hayashi, Yoshiaki
출원인 / 주소
Asmo Co., Ltd.
대리인 / 주소
Posz & Bethards, PLC
인용정보
피인용 횟수 :
8인용 특허 :
8
초록▼
A yoke receives an armature and a cooling fan and has air inlet and outlet openings. A water blocking cover substantially covers the inlet and outlet openings of the yoke. The cover includes an intake duct, an exhaust duct and a partitioning member. The air is drawn from outside of the cover into th
A yoke receives an armature and a cooling fan and has air inlet and outlet openings. A water blocking cover substantially covers the inlet and outlet openings of the yoke. The cover includes an intake duct, an exhaust duct and a partitioning member. The air is drawn from outside of the cover into the air inlet openings through the intake duct upon rotation of the fan. The air is discharged from the air outlet openings to the outside of the water blocking cover through the exhaust duct upon the rotation of the fan. The partitioning member is located in a space between the water blocking cover and the yoke and restrains free communication of the air between the intake duct and the exhaust duct through the space between the water blocking cover and the yoke.
대표청구항▼
A yoke receives an armature and a cooling fan and has air inlet and outlet openings. A water blocking cover substantially covers the inlet and outlet openings of the yoke. The cover includes an intake duct, an exhaust duct and a partitioning member. The air is drawn from outside of the cover into th
A yoke receives an armature and a cooling fan and has air inlet and outlet openings. A water blocking cover substantially covers the inlet and outlet openings of the yoke. The cover includes an intake duct, an exhaust duct and a partitioning member. The air is drawn from outside of the cover into the air inlet openings through the intake duct upon rotation of the fan. The air is discharged from the air outlet openings to the outside of the water blocking cover through the exhaust duct upon the rotation of the fan. The partitioning member is located in a space between the water blocking cover and the yoke and restrains free communication of the air between the intake duct and the exhaust duct through the space between the water blocking cover and the yoke. in the electromagnetic coil device by the actual movement of the movable element. 6. A joint driving apparatus according to claim 2, wherein an actual movement of the movable element with respect to the stator part is estimated from an electric current flowing through the electromagnetic coil device. 7. A joint driving apparatus according to claim 2, further comprising at least two of the stator parts, the electromagnetic coil device energizes the at least two stator parts respectively to be magnetized with a difference in energized phase between the at least two stator parts so that a traveling magnetic field for urging the movable element in the movable direction is generated by a cooperation between the at least two stator parts, a distance between the pair of magnetic poles of one of the stator parts and the pair of magnetic poles of the other one of the stator parts adjacent to each other in the movable direction=(k*P)+(P/M), when P is a pitch of the pairs of the magnetic poles adjacent to each other in the movable direction in each of the stator parts, k is an integral number not less than zero, and M is a number of the stator parts energized with respective energized phases different from each other while M is an integral number not less than two. 8. A joint driving apparatus according to claim 2, further comprising a dust cover covering a portion of the movable element projecting from the stator part. 9. A joint driving apparatus according to claim 2, further comprising a cooling device for cooling the linear motor. 10. A joint driving apparatus according to claim 2, further comprising a switching device for switching, between a battery and an outer electric power source, an electric power supply source for supplying an electric power to the linear motor. 11. A joint driving apparatus according to claim 2, further comprising at least two of the stator parts that are energized respectively to be magnetized with a difference in energized phase between the at least two stator parts so that a traveling magnetic field for urging the movable element in the movable direction is generated by a cooperation between the at least two stator parts, and each of the stator parts is magnetized by a single electromagnetic coil. 12. A joint driving apparatus according to claim 2, further comprising at least two of the stator parts that are energized respectively to be magnetized with a difference in energized phase between the at least two stator parts so that a traveling magnetic field for urging the movable element in the movable direction is generated by a cooperation between the at least two stator parts, the at least two pairs of magnetic poles in one of the stator parts is energized by single electromagnetic coil and the at least two pairs of magnetic poles in the other one of the stator parts is energized by another single electromagnetic coil. 13. A joint driving apparatus for generating a relative movement between first and second members on a joint, comprising: a linear motor including: at least one stator part fixed to the other one of the first and second members, a movable element movable with respect to the stator part in a movable direction and connected to the one of the first and second members to be moved with respect to the other one of the first and second members, and an electromagnetic coil device for energizing the stator part to be magnetized so that a magnetic field for urging the movable element in the movable direction with respect to the stator part is generated; wherein the stator part includes at least two pairs of magnetic poles, the at least two pairs are adjacent to each other in the movable direction,the magnetic poles of each of the at least two pairs face to each other through the movable element in a traverse direction perpendicular to the movable direction to generate the magnetic field passing the magnetic poles through the movable element, and a magnetic polar direction of one of the at least two pairs is opposite to that of the other one of the at least two pairs adjacent to the one of the at least two pairs in movable direction when the stator part is magnetized; wherein the joint driving apparatus further comprises an elastic member a part of which is connected to one of the first and second members; and wherein the movable element is connected to another part of the elastic member to drive the one of the first and second members through the elastic member with respect to the another one of the first and second members. 14. A joint driving apparatus according to claim 13, further comprising a plurality of pairs of the elastic members and linear motors, wherein the relative movement between the first and second members is performed along each of directions different from each other by respective one of the pairs of the elastic members and linear motors. 15. A joint driving apparatus according to claim 13, further comprising a plurality of the elastic members, wherein the relative movement between the first and second members is performed along each of directions different from each other by respective one of the elastic members connected selectively to the linear motor. 16. A joint driving apparatus according to claim 13, wherein the elastic member includes a spring for connecting elastically between the movable element and the one of the first and second members. 17. A joint driving apparatus according to claim 13, wherein the elastic member includes a rubber for connecting elastically between the movable element and the one of the first and second members. 18. A joint driving apparatus apparatus for generating a relative movement between first and second members on a joint, comprising a linear motor including: at least one stator part fixed to the other one of the first and second members, a movable element movable with respect to the stator part in a movable direction and connected to the one of the first and second members to be moved with respect to the other one of the first and second members, and an electromagnetic coil device for energizing the stator part to be magnetized so that a magnetic field for urging the movable element in the movable direction with respect to the stator part is generated; wherein the stator part includes at least two pairs of magnetic poles, the at least two pairs are adjacent to each other in the movable direction, the magnetic poles of each of the at least two pairs face to each other through the movable element in a traverse direction perpendicular to the movable direction to generate the magnetic field passing the magnetic poles through the movable element, and a magnetic polar direction of one of the at least two pairs is opposite to that of the other one of the at least two pairs adjacent to the one of the at least two pairs in the movable direction when the stator part is magnetized; and wherein the joint driving apparatus further comprises a spring member for urging the movable element with respect to the other one of the first and second members in the movable direction. 19. A joint driving apparatus for generating a relative movement between first and second members on a joint, comprising a linear motor including: at least one stator part fixed to the other one of the first and second members, a movable element movable with respect to the stator part in a movable direction and connected to the one of the first and second members to be moved with respect to the other one of the first and second members, and an electromagnetic coil device for energizing the stator part to be magnetized so that a magnetic field for urging the movable element in the movable direction with respect to the stator part is generated; wherein the stator part includes at least two pairs of magnetic poles, the at least two pairs are adjacent to each other in the movable direction, the magnetic poles of each of the at least two pairs face to each other through the movable e
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이 특허에 인용된 특허 (8)
Fukasaku Yoshinori (Hitachi JPX) Noto Kunihiro (Katsuta JPX) Takahashi Reijiro (Katsuta JPX), Cooling apparatus for motor means to protect commutator from dust and moisture in cooling air.
Early John ; Evon Thomas S. ; Grant Barron D. ; Melfi Michael J. ; Smith Patricia L. ; Stelzner Daniel J., Electric motor having frame adaptable for enclosed and open motor cooling.
Parkinson David D. (West Allis WI) Latus Gilbert T. (Milwaukee WI), Open drip-proof machinery cooling system using totally enclosed type bearing brackets.
White, Stephen; Ganev, Evgeni; Fizer, Leroy Allen; Clampitt, Norman; Bahn, Pius, Multi-directional air cooling of a motor using radially mounted fan and axial/circumferential cooling fins.
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