GB2343793A - Device for positioning and cushioning the rotor of the motor - Google Patents

Device for positioning and cushioning the rotor of the motor Download PDF

Info

Publication number
GB2343793A
GB2343793A GB9900323A GB9900323A GB2343793A GB 2343793 A GB2343793 A GB 2343793A GB 9900323 A GB9900323 A GB 9900323A GB 9900323 A GB9900323 A GB 9900323A GB 2343793 A GB2343793 A GB 2343793A
Authority
GB
United Kingdom
Prior art keywords
peripheral portion
central portion
center
rotor shaft
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB9900323A
Other versions
GB2343793B (en
GB9900323D0 (en
Inventor
Alex Horng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunonwealth Electric Machine Industry Co Ltd
Original Assignee
Sunonwealth Electric Machine Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunonwealth Electric Machine Industry Co Ltd filed Critical Sunonwealth Electric Machine Industry Co Ltd
Publication of GB9900323D0 publication Critical patent/GB9900323D0/en
Publication of GB2343793A publication Critical patent/GB2343793A/en
Application granted granted Critical
Publication of GB2343793B publication Critical patent/GB2343793B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/08—Elastic or yielding bearings or bearing supports, for exclusively rotary movement primarily for axial load, e.g. for vertically-arranged shafts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/167—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
    • H02K5/1672—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings radially supporting the rotary shaft at both ends of the rotor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Rotary Pumps (AREA)

Abstract

The device comprises a central portion e.g. 512, a peripheral portion e.g 52 and a connecting portion e.g. 53. The central portion is adapted to contact one end of the rotor shaft. When the device is forced to mount into the shaft 20, the outmost edge of the peripheral portion fit tightly in the shaft. The connecting portion has a plurality of connecting pieces projecting outwards from the central portion to the peripheral portion to provide resilient effects to the device. Alternatively, the central portion may engage a shaft slot - Figs 12A,B.

Description

DEVICE FOR POSITIONING AND CUSHIONING THE ROTOR OF THE MOTOR This invention relates to a device for positioning and cushioning a rotor of a motor which also provides the functions of C-shaped ring and spring.
In the accompanying drawings Figs. 1 and 2 show a conventional structure of a motor rotor. A shaft 161 of a rotor 16 passes through a bearing 21, cupreous set 22, spring 23 and bearing 24 in order. A C-shape ring 25 is mounted within an annular recessed groove 1611 of the shaft 161 for positioning the shaft 161.
The bearing 21, the cupreous set 22, the spring 23 and the bearing 24 are mounted in a shaft tube 20 which is mounted in the housing 26. The spring 23 provides the resilient and cushioning effects. However, during the assembling of the overall units, the springs tend to tangle with each other. Besides, in the manufacturing and assembling processes, due to the resiliency of the spring, it is difficult to assemble the unit. Further, it is difficult to mount the C-shape ring 25 into the recess ring 1611 of the rotor shaft 161.
The object of the present invention is to provide a device for positioning and cushioning the rotor of the motor which is intended to replace the spring, to thereby obviating the difficulties found in the assembling of the spring,- A further object of the present invention is to provide a device for positioning and cushioning the rotor of the motor which is intended to replace the C-shape ring such that the device performs the functions of a Cshape ring as well as a spring.
The invention will be further described by way of non-limitative example with reference to the accompanying drawings, in which: FIG. 1 is an exploded view of a conventional rotor; FIG. 2 is a cross section view of the conventional rotor; FIG. 3A depicts a first preferred embodiment of the present invention ; FIG. 3B is a cross section view of the embodiment in Fig. 3A ; FIG. 3C depicts a modification of the first embodiment of the present invention ; FIG. 3D is a cross section view of the modification shown in FIG.
3C ; FIG. 3E is a cross section view showing the first embodiment of the invention mounted in the rotor of a motor; FIG. 4A depicts the second embodiment of the present invention; FIG. 4B is a cross section view of the embodiment in Fig. 4A; FIG. 4C depicts a modification of the second embodiment of the present invention ; FIG. 4D is a cross section view of the modification shown in FIG.
4C; FIG. 5A depicts the third embodiment of the present invention; FIG. 5B is a cross section view of the embodiment in Fig. 5A ; FIG. 5C depicts a modification of the third embodiment of the invention ; FIG. 3D is a cross section view of the modification shown in FIG.
5C ; FIG. 6A depicts the fourth embodiment of the present invention ; FIG. 6B is a cross section view of the embodiment in Fig. 6A; FIG. 6C depicts a modification of the fourth embodiment of the present invention ; FIG. 6D is a cross section view of the embodiment shown in FIG.
6C; FIG. 7A depicts the fifth embodiment of the present invention ; FIG. 7B is a cross section view of the embodiment in Fig. 7A; FIG. 7C depicts a modification of the fifth embodiment; FIG. 7D is a cross section view of the embodiment shown in FIG.
7C; FIG. 7E is a cross section view showing the fifth embodiment mounted in the rotor of a motor; FIG. 8A depicts the sixth embodiment of the present invention; FIG. SB is a cross section view of the embodiment in Fig. 8A; FIG. 8C depicts a modification of the sixth embodiment; FIG. 8D is a cross section view of the embodiment in FIG. 8C; FIG. 9A depicts the seventh embodiment of the invention; FIG. 9B is a cross section view of the embodiment in Fig. 9A ; FIG. 9C depicts a modification of the embodiment shown in Fig. 9A ; FIG. 9D is a cross section view of the modified embodiment in FIG.
9C ; FIG. IOA depicts the eighth embodiment of the present invention ; FIG. I OB is a cross section view of the eighth embodiment; FIG. 1OC depicts a modification of the eighth embodiment; FIG. IOD is a cross section view of the modified embodiment shown in FIG. 1OC ; FIG. IIA depicts the ninth embodiment of the present invention; FIG. I I B is a cross section view of the ninth embodiment; FIG. I I C depicts a modification of the ninth embodiment ; FIG. I I D is a cross section view of the embodiment in FIG. 11C ; FIG. I I E depicts a modification of the ninth embodiment; FIG. IIFis a cross section view of the embodiment in FIG. I IE ; FIG. 12A depicts the tenth embodiment of the present invention ; and FIG. 12B is a cross section view of the tenth embodiment.
The present invention provides a device 3 for positioning and cushioning the rotor of a motor. With reference to FIG. 3A to 3D which show the first embodiment, the device 3 comprises a central portion 31, a peripheral portion 32 and a connecting portion 33. The central portion 31 is designed to contact the end of the rotor shaft 161. When the device 3 is forced to mount within the shaft tube 20, the outmost edge of the peripheral portion 32 fits tightly in the shaft tube 20. The connecting portion 33, which connects the central portion 31 to the peripheral portion 32, has a plurality of connecting pieces projecting outwards from the central portion 31 to the peripheral portion 32. Since the device 3 is forced to mount within the shaft tube 20 such that the outmost edge of the peripheral portion 32 first tightly in the shaft tube 20, the connecting portion 33 will provide the device 3 with resiliency so that the rotor has cushioning effect. The connecting portion 33 projects upwardly from the peripheral portion 32 towards the center so that the central portion 31 protrudes beyond the peripheral portion 32. Alternatively, the connecting portion may also projects downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion.
Besides, the connecting portion peripheral portion, and central portion can all be in the same level. FIG. 3E is a cross section view showing the mounting of the present invention to the rotor of a motor. The device 3 is forced to mount into the shaft tube 20 so that the outmost edge of the peripheral portion 32 fits tightly in the shaft tube 20, and the central portion 31 engages one end of the rotor shaft 161. As shown in Figs 3A and 3B, the center portion 31 can be depressed at the center to form a recess 311 for receiving one end of the rotor shaft 161. Alternatively, as shown in FIG.
3C and 3D, the central portion 31 can be hollowed out to form a hole 312 for receiving the one end of the rotor shaft 161. Besides, the center of the central portion 31 can also be a plain section adapted to engage the one end of the rotor shaft 161.
FIG. 4A to 4D show a second embodiment according to the present invention. The device 4 comprises a central portion 41, a peripheral portion 42 and a connecting portion 43. The peripheral portion 42 is toothed along the circumference so that the peripheral portion 42 can be easily mounted in the shaft tube 20. The connecting portion 43 projects upwardly from the peripheral portion 42 towards the center so that the central portion 41 protrudes beyond the peripheral portion 42.
Alternatively, the connecting portion may also projects downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion. Besides, the connecting portion peripheral portion, and central portion can all be in the same level.
Similarly, the central portion 41 can be depressed at the center to form a recess 411 for receiving the one end of the rotor shaft 161 (FIG. 4A and 4B).
Alternatively, as shown in FIG. 4C and 4D, the central portion 41 can be hollowed out at the center to form a hole 412 for receiving the one end of the rotor shaft 161. Besides, the center of the central portion 41 can also be a plain section adapted to engage the one end of the rotor shaft 161.
FIG. 5A to 5D show the third embodiment according to the present invention. The device 5 comprises a central portion 51, a peripheral portion 52, and a connecting portion 53. The peripheral portion 52 includes an upstanding wall 522 which extends upwardly from the outmost edge of the peripheral portion 52. The peripheral wall 522 tightly fits in the shaft tube 20 to provide a larger area to which the shaft tube 20 may engage so that the device 5 can fit more tightly in the shaft tube 20. The connecting portion 53 projects upwardly from the peripheral portion 52 towards the center so that the central portion 51 protrudes beyond the peripheral portion 52. Alternatively, the connecting portion may also project downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion. Besides, the connecting portion, peripheral portion, and central portion can all be in the same level. As shown in Fig. 5A and 5B, the central portion 51 can be depressed at the center to form a recess 511 for receiving the one end of the rotor shaft 161. Altematively, as shown in FIG. 5C and 5D, the central portion 51 can be hollowed out to form a hole 512 for receiving the one end of the rotor shaft 161. Besides, the center of the central portion 51 can also be a plain section adapted to engage the one end of the rotor shaft 161.
FIG. 6A to 6D show the fourth embodiment according to the present invention. The device 6 comprises a central portion 61, a peripheral portion 62 and a connecting portion 63. The peripheral portion 62 further comprises a plurality upstanding posts 621,622 and 623 extending upwardly from the outmost edge of the peripheral portion 62. The connecting portion 63 projects upwardly from the peripheral portion 62 towards the center so that the central portion 61 protrudes beyond the peripheral portion 62. Alternatively, the connecting portion may also projects downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion.
Besides, the connecting portion, peripheral portion, and central portion can all be in the same level. Similarly, the central portion 61 can be depressed at the center to form a recess 611 for receiving one end of the rotor shaft 161 (FIG. 6A and 6B). Alternatively, as shown in FIG. 6C and 6D, the central portion 61 can be hollowed out at the center to form a hole 612 for receiving one end of the rotor shaft 161. Besides, the center of the central portion 61 can also be a plain section adapted to engage the one end of the rotor shaft 161.
FIG. 7A to 7D show the fifth embodiment according to the present invention. The device 7 comprises a central portion 71, a peripheral portion 72 and a connecting portion 73. The peripheral portion 72 comprises a plurality of upstanding posts 721,722 and 723 extending upwardly from the outmost edge of the peripheral portion 72, and a plurality of hooks 724,725 and 726 extending towards the center of the device 7 from the top of the posts 721,722 and 723 for engaging the annular recessed groove 1611 of the rotor shaft 161. As shown in FIG. 7E, the device 7 can replace the spring 23 and C-shape ring 25 of the conventional rotor structure (see FIGS. 1 and 2) for providing positioning and cushioning effects. The connecting portion 73 projects upwardly from the peripheral portion 72 towards the center so that the central portion 71 protrudes beyond the peripheral portion 72. Alternatively, the connecting portion may also projects downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion. Besides, the connecting portion, peripheral portion, and central portion can all be in the same level. The central portion 71 can be depressed at the center to form a recess 711 for receiving one end of the rotor shaft 161 (FIG. 7A and 7B). Alternatively, as shown in FIG. 7C and 7D, the central portion 71 can be hollowed out at the center to form a hole 712 for receiving one end of the rotor shaft 161. Besides, the center of the central portion 71 can also be a plain section adapted to engage the one end of the rotor shaft 16 1.
FIG. 8A to 8D show the sixth embodiment according to the present invention. The device 8 comprises a central portion 81, a peripheral portion 82, and a connecting portion 83. The peripheral portion 82 comprises a plurality of legs 821 and 822 extending downwardly from the outmost edge of the peripheral portion 82 and join to each other at the bottom to form a base 824. The base 824 fits tightly in the shaft tube 20 to provide a larger area to which the shaft tube 20 may engage so that the device 8 can fit more tightly in the shaft tube 20. The connecting portion 83 projects upwardly from the peripheral portion 82 towards the center so that the central portion 81 protrudes beyond the peripheral portion 82.
Alternatively, the connecting portion may also projects downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion. Besides, the connecting portion, peripheral portion, and central portion can all be in the same level.
The central portion 81 can be depressed at the center to form a recess 811 for receiving one end of the rotor shaft 161 (FIGS. 8A and 8B).
Alternatively, as shown in FIGS. 8C and 8D, the central portion 81 can be hollowed out at the center to form a hole 812 for receiving one end of the rotor shaft 161. Besides, the center of the central portion 81 can also be a plain section adapted to engage the one end of the rotor shaft 161.
FIG. 9A to 9D show the seventh embodiment according to the present invention The device 9 comprises a central portion 91, a peripheral portion 92, and a connecting portion 93. The peripheral portion 92 comprises an annular base 921 extending downwardly from the outmost edge of the peripheral portion 92. The annular base 921 fits tightly in the shaft tube 20 to provide a larger area to which the shaft tube 20 may engage so that the device 9 can fit more tightly in the shaft tube 20. The connecting portion 93 projects upwardly from the peripheral portion 92 towards the center so that the central portion 91 protrudes beyond the peripheral portion 92. Alternatively, the connecting portion may also projects downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion.
Besides, the connecting portion, peripheral portion, and central portion can all be in the same level. The central portion 91 can be depressed at the center to form a recess 911 for receiving one end of the rotor shaft 161 (FIGS. 9A and 9B). Alternatively, as shown in FIGS 9C and 9D, the central portion 91 can be hollowed out at the center to form a hole 912 for receiving one end of the rotor shaft 161. Besides, the center of the central portion 91 can also be a plain section adapted to engage the one end of the rotor shaft 161.
FIG. IOA to IOD show the eighth embodiment according to the present invention. The device 10 comprises a central portion 101, a peripheral portion 102, and a connecting portion 103. The peripheral portion 102 comprises a plurality of supports 1021,1022 and 1023 extending upwardly from the outmost edge of the connecting portion 103, which are connected to each other at the top end to form a peripheral wall 1024. The peripheral wall 1024 fits tightly in the shaft tube 20 to provide a larger area to which the shaft tube 20 may engage so that the device 10 can fit more tightly in the shaft tube 20. Since the outer edge of the connecting portion 103 directly extends upwardly to the supports, the connecting portion 103 can provide better resiliency. The connecting portion 103 projects upwardly from the peripheral portion 102 towards the center so that the central portion 101 protrudes beyond the peripheral portion 102. Alternatively, the connecting portion may also projects downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion. Besides, the connecting portion, peripheral portion, and central portion can all be in the same level. The central portion 101 can be depressed at the center to form a recess 1011 for receiving one end of the rotor shaft 161 (FIGS. IOA and IOB). Alternatively, as shown in FIGS. IOC and IOD, the central portion 101 can be hollowed out at the center to form a hole 1012 for receiving one end of the rotor shaft 161. Besides, the center of the central portion 101 can also be a plain section adapted to engage the one end of the rotor shaft 161.
FIG. l lA to I IF show the ninth embodiment according to the present invention. The device 11 comprises a central portion I11, a peripheral portion 112, and a connecting portion 113. The peripheral portion 112 comprises a plurality of legs 1121 and 1122 extending downwardly from the outmost edge of the connecting portion 113, which are connected to each other to form a base 1124. The base 1124 fits tightly in the shaft tube 20 to provide a larger area to which the shaft tube 20 may engage so that the device 11 can fit more tightly in the shaft tube 20. Since the outer edge of the connecting portion 113 directly extends downwardly to the legs, the connecting portion 113 can provide better resiliency. The connecting portion 113 projects upwardly from the peripheral portion 112 towards the center so that the central portion 111 protrudes beyond the peripheral portion 112. Alternatively, the connecting portion may also projects downwardly from the peripheral portion towards the center so that the central portion is in a location lower than the peripheral portion (see FIGS.
I IE and llF). Besides, the connecting portion, peripheral portion, and central portion can all be in the same level. The central portion 111 can be depressed at the center to form a recess 1111 for receiving one end of the rotor shaft 161 (FIGS. 11A and 11B). Alternatively, as shown in FIGS.
11C and 11D, the central portion 111 can be hollowed out at the center to form a hole 1112 for receiving one end of the rotor shaft 161 Besides, the center of the central portion 111 can also be a plain section adapted to engage the one end of the rotor shaft 161.
FIG. 12A to 12B show the tenth embodiment according to the present invention. The device 12 comprises a peripheral portion 121, and a plurality of hooks 1221,1222 and 1223 extending inwardly from the peripheral portion 121 for engaging the annular recessed groove 1611 of the rotor shaft 161 The outmost edge of the peripheral portion 121 fits tightly in the shaft tube 20 which receives the rotor shaft 161 of the motor. The device 12 can replace the spring 23 and C-shape ring 25 of the conventional rotor structure (see FIGS. I and 2) for providing positioning and cushioning effects. The hooks 1221,1222 and 1223 projects upwardly from the peripheral portion 121 towards the center so that the central portion of the device 12 is in a location higher than the peripheral portion 121.
Alternatively, the hooks may also project downwardly from the peripheral portion towards the center so that the central portion of the device 12 is in a location lower than the peripheral portion. Besides, the hooks and the peripheral portion can be of the same level.

Claims (27)

  1. CLAIMS 1. A device for positioning and cushioning a rotor of a motor, and adapted to mount in a shaft tube receiving a rotor shaft of the motor, comprising : a central portion adapted to contact one end of the rotor shaft; a peripheral portion having an outmost edge fitting tightly in the shaft tube; and, a connecting portion connecting the central portion to the peripheral portion, and having a plurality of connecting pieces projecting outwards from the central portion to the peripheral portion, and providing elasticity effect to the device.
  2. 2. The device as claimed in Claim 1, wherein the outmost edge of the peripheral portion is toothed along the circumference so as to be easily mounted in the shaft tube.
  3. 3. The device as claimed in Claim 1, wherein the peripheral portion further comprises a peripheral wall extending upwardly from the outmost edge of the peripheral portion to fit tightly in the shaft tube.
  4. 4. The device as claimed in Claim 1, wherein the peripheral portion further comprises a plurality of posts extending upwardly from the outmost edge of the peripheral portion.
  5. 5. The device as claimed in Claim 1, wherein the peripheral portion further comprises a plurality of posts extending upwardly from the outmost edge of the peripheral portion, and a plurality of hooks extending inwardly towards the device from the top of the posts for engaging an annular recessed groove of the rotor shaft.
  6. 6. The device as claimed in Claim 1, wherein the peripheral portion further comprises a plurality of legs extending downwardly from the outmost edge of the peripheral portion, which join to each other at the bottom to form a base.
  7. 7. The device as claimed in Claim 1, wherein the peripheral portion further comprises a base extending downwardly from the outmost edge of the peripheral portion to fit tightly in the shaft tube.
  8. 8. The device as claimed in Claim 1, wherein the peripheral portion further comprises a plurality of supports extending upwardly from the outmost edge of the connecting portion, which are connected to each other at the top end to form a peripheral wall so as to fit tightly in the shaft tube.
  9. 9. The device as claimed in Claim 1, wherein the peripheral portion further comprises a plurality of legs extending downwardly from the outmost edge of the connecting portion, which are connected to each other to form a base so as to fit tightly in the shaft tube.
  10. 10. The device as claimed in claims 1,2,3,4, 5,6,7,8 or 9, wherein the connecting portion projects upwardly from the peripheral portion towards the center of the device so that the central portion protrudes beyond the peripheral portion.
  11. 11. The device as claimed in Claim 10, wherein the central portion is a plane engaging said one end of the rotor shaft.
  12. 12. The device as claimed in Claim 10, wherein the central portion is depressed at the center to form a recess for receiving said one end of the rotor shaft.
  13. 13. The device as claimed in Claim 10, wherein the central portion is hollowed out at the center as a hole for receiving said one end of the rotor shaft.
  14. 14. The device as claimed in claims 1, 2,3,4, 5, 6,7,8 or 9, wherein the connecting portion projects downwardly from the peripheral portion towards the center of the device so that the central portion is in a location lower than the peripheral portion.
  15. 15. The device as claimed in Claim 14, wherein the central portion is a plane engaina said one end of the rotor shaft.
  16. 16. The device as claimed in Claim 14, wherein the central portion is depressed at the center to form a recess for receiving said one end of the rotor shaft.
  17. 17. The device as claimed in Claim 14, wherein the central portion is hollowed out at the center as a hole for receiving said one end of the rotor shaft.
  18. 18. The device as claimed in claims 1, 2,3,4, 5,6,7,8 or 9, wherein the connecting portion and central portion are on the same plane and connected to each other.
  19. 19. The device as claimed in Claim 18, wherein the central portion is a plane engaging said one end of the rotor shaft.
  20. 20. The device as claimed in Claim 18, wherein the central portion is depressed at the center to form a recess for receiving said one end of the rotor shaft.
  21. 21. The device as claimed in Claim 18, wherein the central portion is hollowed out at the center as a hole for receiving said one end of the rotor shaft.
  22. 22. A device for positioning and cushioning a rotor of a motor, and adapted to mount in a shaft tube receiving a rotor shaft of the motor, comprising : a peripheral portion having an outmost edge fitting tightly in the shaft tube; and, a plurality of hooks extending inwardly from the peripheral portion for engaging an annular recessed groove of the rotor shaft.
  23. 23. The device as claimed in Claim 22, wherein the hooks project upwardly from the peripheral portion towards the center of the device so that the central portion is in a location higher than the peripheral portion.
  24. 24. The device as claimed in Claim 22, wherein the hooks project downwardly from the peripheral portion towards the center of the device so that the central portion is in a location lower than the peripheral portion.
  25. 25. The device as claimed in Claim 22, wherein the hooks and peripheral portion are on the same plane and connected to each other.
  26. 26. A device for positioning and cushioning a rotor of a motor, constructed and arranged to operate substantially as hereinbefore described with reference to and as illustrated in Figures 3A to 12B of the accompanying drawings.
  27. 27. A motor comprising a device according to any one of the preceding claims.
GB9900323A 1998-11-13 1999-01-07 Device for positioning and cushioning the rotor of the motor Expired - Fee Related GB2343793B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN98248225U CN2348523Y (en) 1998-11-13 1998-11-13 Motor rotor locating elastic device

Publications (3)

Publication Number Publication Date
GB9900323D0 GB9900323D0 (en) 1999-02-24
GB2343793A true GB2343793A (en) 2000-05-17
GB2343793B GB2343793B (en) 2003-10-29

Family

ID=5265619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9900323A Expired - Fee Related GB2343793B (en) 1998-11-13 1999-01-07 Device for positioning and cushioning the rotor of the motor

Country Status (2)

Country Link
CN (1) CN2348523Y (en)
GB (1) GB2343793B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379560A (en) * 2001-03-30 2003-03-12 Sunonwealth Electr Mach Ind Co Bearing arrangment for supporting a rotor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663849A (en) * 1970-12-31 1972-05-16 Msl Ind Inc Snap-on retainer for motor rotor shaft
US4128364A (en) * 1972-11-23 1978-12-05 Papst-Motoren Kg Radial flow fan with motor cooling and resilient support of rotor shaft
US5006943A (en) * 1981-09-07 1991-04-09 Papst-Motoren Gmbh & Co., Kg Disk storage drive
JPH04248346A (en) * 1991-01-22 1992-09-03 Fuji Elelctrochem Co Ltd Thrust bearing spring for miniature motor
US5258672A (en) * 1990-07-30 1993-11-02 Papst-Motoren Gmbh & Co. Kg Axial retaining means for the rotor shaft of an electric motor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4202153A1 (en) * 1991-01-28 1992-08-06 Papst Motoren Gmbh & Co Kg Run-up disc for shaft esp. of electric motor - has lubricant wells angularly distributed around surface of disc in spring-maintained contact with wall bearing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3663849A (en) * 1970-12-31 1972-05-16 Msl Ind Inc Snap-on retainer for motor rotor shaft
US4128364A (en) * 1972-11-23 1978-12-05 Papst-Motoren Kg Radial flow fan with motor cooling and resilient support of rotor shaft
US5006943A (en) * 1981-09-07 1991-04-09 Papst-Motoren Gmbh & Co., Kg Disk storage drive
US5258672A (en) * 1990-07-30 1993-11-02 Papst-Motoren Gmbh & Co. Kg Axial retaining means for the rotor shaft of an electric motor
JPH04248346A (en) * 1991-01-22 1992-09-03 Fuji Elelctrochem Co Ltd Thrust bearing spring for miniature motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379560A (en) * 2001-03-30 2003-03-12 Sunonwealth Electr Mach Ind Co Bearing arrangment for supporting a rotor
GB2379560B (en) * 2001-03-30 2005-12-14 Sunonwealth Electr Mach Ind Co Supporting structure for a rotor

Also Published As

Publication number Publication date
GB2343793B (en) 2003-10-29
CN2348523Y (en) 1999-11-10
GB9900323D0 (en) 1999-02-24

Similar Documents

Publication Publication Date Title
US6654213B2 (en) Stator and bearing fixing structure of a motor
US5805423A (en) Battery contact and retention apparatus for printed circuit boards
US6882074B2 (en) Axial tube assembly for a motor
US5952745A (en) Cylindrical coreless vibrating motor
US7063563B1 (en) Freely rotational receptacle
US9859767B2 (en) Electric motor
US20090224616A1 (en) Flat Vibration Motor
EP1772177A3 (en) Element replacement type filter
US20090101786A1 (en) Three-piece furniture swivel
US7097485B1 (en) Electrical connector having resilient conductive terminals
US20030045135A1 (en) Switch assembly
US7049727B2 (en) Integrated brush-holder retention system
US20050046302A1 (en) Small-sized motor, small-sized vibration motor, and portable information device
CN100511537C (en) Rotary switch
US6819021B1 (en) Combination of a base and an axle tube for a motor
GB2343793A (en) Device for positioning and cushioning the rotor of the motor
JP3062840U (en) Device for positioning and damping the rotor of the motor
US5006073A (en) Snap fit contact assembly
US5568562A (en) Releasably mounted compound loudspeakers
US9118222B2 (en) Outer rotor-type brushless motor
US6531800B2 (en) Brush assembling structure for fuel pump
US6517318B2 (en) Buffer pad for use in an electric fan
JP2003289641A (en) Support structure for brush device
US5492477A (en) Miniature lamp holder
CN215475446U (en) Foot component and legged robot

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090107