Rotating electrical machine

• US 20010033113A1
• Filed: 04/03/2001
• Published: 10/25/2001
• Est. Priority Date: 04/10/2000
• Status: Abandoned Application

• Current Assignee: Moriyama Sangyo Kabushiki Kaisha
• Original Assignee: Moriyama Sangyo Kabushiki Kaisha
• Inventors: Takano, Tadashi
• Application Number:
  US09/681,430
• Publication Number:
  US 20010033113A1
• Time in Patent Office: Days
• US Class Current: 310/67R
• CPC Class Codes: B62D 5/064 Pump driven independently from vehicle engine, e.g. electric driven pump B62D5/065 takes precedence
• CPC Class Codes: H02K 11/33 Drive circuits, e.g. power electronics H02K11/38 takes precedence
• CPC Class Codes: H02K 5/04 Casings or enclosures characterised by the shape, form or construction thereof
• CPC Class Codes: H02K 7/00 Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
• CPC Class Codes: H02K 7/083 radially supporting the rotary shaft at both ends of the rotor H02K7/086, H02K7/09 take precedence
• CPC Class Codes: H02K 7/085 radially supporting the rotary shaft at only one end of the rotor H02K7/086, H02K7/09 take precedence
• CPC Class Codes: H02K 7/086 radially supporting the rotor around a fixed spindle; radially supporting the rotor directly H02K7/09 takes precedence
• CPC Class Codes: H02K 7/14 Structural association with mechanical loads, e.g. with hand-held machine tools or fans with fan or impeller for cooling the machine H02K9/06

Abstract

A number of embodiments of rotating electrical machines such as a DC brushless motor that are mounted in a housing arrangement that provides not only a bearing for the rotor but also a cavity in which a major portion of an associated machine having a rotating shaft associated with the DC machine is positioned. Thus, a more universal type of construction is possible that permits greater latitude in the associated equipment. Various arrangements for bearing support of the rotor and housing constructions are disclosed.

Claims

1. A DC rotating electrical machine comprised of an outer housing forming a stator of said DC rotating electrical machine, said outer housing being comprised of a generally cylindrical center section and affixed first and second end closures, a rotor journalled within said outer housing and extending through said first end closures for driving connection to a related rotating machine, said first end closure forming a cavity in which a substantial portion of said related rotating machine is contained.

2. A DC rotating electrical machine as set forth in

claim 1

wherein a third end closure is affixed in closing relation to the cavity of the first end closure for containing the related rotating machine within the cavity of said first end closure.

3. A DC rotating electrical machine as set forth in

claim 1

wherein the first and second end closures are axially spaced from each other and the second end closure is integrally formed with an axially extending cylindrical center section.

4. A DC rotating electrical machine as set forth in

claim 3

wherein the first end closure is in abutting relation to the axially extending cylindrical center section.

5. A DC rotating electrical machine as set forth in

claim 3

wherein the first end closure is axially spaced from the axially extending cylindrical center section.

6. A DC rotating electrical machine as set forth in

claim 5

wherein the machine includes a stator made up a plurality of field coils.

7. A DC rotating electrical machine as set forth in

claim 6

wherein the plurality of field coils are wound around a laminated core.

8. A DC rotating electrical machine as set forth in

claim 7

wherein a portion of the laminated core is exposed between the first and second end closures.

9. A DC rotating electrical machine as set forth in

claim 1

wherein the DC rotating electrical machine is brushless.

10. A DC rotating electrical machine as set forth in

claim 9

further including a sensor contained within the outer housing for sensing the rotational position of said rotor.

11. A DC rotating electrical machine as set forth in

claim 10

wherein the machine includes a stator made up a plurality of field coils.

12. A DC rotating electrical machine as set forth in

claim 11

wherein a controller responsive to the output of the sensor switches the polarity of the field coils.

13. A DC rotating electrical machine as set forth in

claim 12

wherein the controller is mounted in the interior of the machine.

14. A DC rotating electrical machine as set forth in

claim 13

wherein the controller is mounted axially between the first and second end closures.

15. A DC rotating electrical machine as set forth in

claim 14

wherein the controller is mounted in a cylindrical member interposed between the first and second end closures.

16. A DC rotating electrical machine as set forth in

claim 12

wherein the controller is mounted on the exterior of the machine.

17. A DC rotating electrical machine as set forth in

claim 1

wherein the second end closure carries a cylindrical post extending into an cylindrical opening in the rotor for journaling said rotor within the outer housing.

18. A DC rotating electrical machine as set forth in

claim 17

wherein the cylindrical post extends a substantial distance axially into the rotor.

19. A DC rotating electrical machine as set forth in

claim 18

wherein the cylindrical post engages a bearing associated with the rotor.

20. A DC rotating electrical machine as set forth in

claim 19

wherein the bearing associated with the rotor comprises an oil impregnated, sleeve type bearing.

21. A DC rotating electrical machine as set forth in

claim 17

wherein the bearing associated with the rotor comprises an anti friction bearing.

22. A DC rotating electrical machine as set forth in

claim 17

wherein the cylindrical post is detachably connected to the second end closure.

23. A DC rotating electrical machine as set forth in

claim 22

wherein the bearing associated with the rotor comprises an oil impregnated, sleeve type bearing.

24. A DC rotating electrical machine as set forth in

claim 22

wherein the bearing associated with the rotor comprises an anti friction bearing.

25. A DC rotating electrical machine as set forth in

claim 21

wherein the cylindrical post is integrally formed with the second end closure.

26. A DC rotating electrical machine as set forth in

claim 1

in combination with a hydraulic powered steering booster and the DC rotating electrical machine comprises a motor and the associated machine is a hydraulic pump.

27. A DC rotating electrical machine comprised of an outer housing forming a stator of said DC rotating electrical machine, said outer housing being comprised of a generally cylindrical center section closed at opposite ends by first and second end closures, a rotor within said outer housing and extending through said first end closures for driving connection to a related rotating machine, said second end closure carrying a cylindrical post extending into an cylindrical opening in said rotor for journalling said rotor within said outer housing.

28. A DC rotating electrical machine as set forth in

claim 27

wherein the cylindrical post extends a substantial distance axially into the rotor.

29. A DC rotating electrical machine as set forth in

claim 28

wherein the cylindrical post engages a bearing associated with the rotor.

30. A DC rotating electrical machine as set forth in

claim 29

wherein the bearing associated with the rotor comprises an oil impregnated, sleeve type bearing.

31. A DC rotating electrical machine as set forth in

claim 29

wherein the bearing associated with the rotor comprises an anti friction bearing.

32. A DC rotating electrical machine as set forth in

claim 27

wherein the cylindrical post is detachably connected to the second end closure.

33. A DC rotating electrical machine as set forth in

claim 32

wherein the bearing associated with the rotor comprises an oil impregnated, sleeve type bearing.

34. A DC rotating electrical machine as set forth in

claim 32

wherein the bearing associated with the rotor comprises an anti friction bearing.

35. A DC rotating electrical machine as set forth in

claim 27

wherein the cylindrical post is integrally formed with the second end closure.