GB2201736A - An electric motor provided with a versatile bearing seat - Google Patents

An electric motor provided with a versatile bearing seat Download PDF

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Publication number
GB2201736A
GB2201736A GB08703417A GB8703417A GB2201736A GB 2201736 A GB2201736 A GB 2201736A GB 08703417 A GB08703417 A GB 08703417A GB 8703417 A GB8703417 A GB 8703417A GB 2201736 A GB2201736 A GB 2201736A
Authority
GB
United Kingdom
Prior art keywords
bearing
seat portion
electric motor
motor
cylindrical
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.)
Withdrawn
Application number
GB08703417A
Other versions
GB8703417D0 (en
Inventor
Georg Strobl
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.)
Johnson Electric Industrial Manufactory Ltd
Original Assignee
Johnson Electric Industrial Manufactory 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 Johnson Electric Industrial Manufactory Ltd filed Critical Johnson Electric Industrial Manufactory Ltd
Priority to GB08703417A priority Critical patent/GB2201736A/en
Publication of GB8703417D0 publication Critical patent/GB8703417D0/en
Publication of GB2201736A publication Critical patent/GB2201736A/en
Withdrawn legal-status Critical Current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
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F16C23/045—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for radial load mainly, e.g. radial spherical plain bearings
    • 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)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Support Of The Bearing (AREA)

Abstract

The bearing seat (11) is cold formed in a metal frame part (10) of the motor and comprises a cylindrical seat portion (12), a part-spherical seat portion (13) disposed radially inwards of the cylindrical seat portion, and a ledge (14) extending radially inwardly from the cylindrical seat portion to the part-spherical seat portion. A self-aligning bearing (14) can be held in contact with the seat portion (13) by a spring clip (16). Alternatively, a non self-aligning bearing, such as a sleeve bearing or a ball bearing, can be received in the seat portion (12). <IMAGE>

Description

An Electric Motor provided with a Versatile Bearing seat This invention relates to an electric motor, particularly but not exclusively a fractional horsepower permanent magnet direct current electric motor, provided with a versatile bearing seat.
Journal bearings of motors fall into one of two general categories, that is self-aligning bearings and non self-aligning bearings. Hitherto bearing seats of motors have been designed to support self-aligning bearings or to support non self-aligning bearings.
The present invention seeks to provide an electric motor provided with a versatile bearing seat capable of supporting bearings of each of the aforesaid general categories.
According to the present invention there is provided an electric motor provided with at least one bearing seat which has been cold formed in a metal frame part of the motor said at least one bearing seat comprising a cylindrical seat portion, a part-spherical seat portion disposed radially inwardly of the cylindrical seat portion, and a ledge extending radially inwardly from the cylindrical seat portion to the part-spherical seat portion, whereby in use a non self-aligning bearing can be received in the cylindrical seat portion or a self aligning bearing can be held in contact with the spherical seat portion by bearing retaining means.
Preferred and/or optional features of the invention are set forth in claims 2 to 10.
The invention will now be more particularly described, by way of example, with refrence to the accompanying drawings, wherein: Figure 1 is a sectional view of part of a motor casing embodying the invention and having a self-aligning bearing in the bearing seat, Figure 2 is an inverted plan view of the bearing retainer of Figure 1 on a reduced scale, Figure 3 is a side elevation of the bearing retainer shown in Figure 2, and Figure 4 is a view similar to Figure 1 but showing a sleeve bearing in the bearing seat.
Referring now to Figures 1 and 4 of the drawings, there is shown therein a closed end-wall 10 of a deep drawn can-like casing of a p.m.d.c. electric motor of a type for example sold by the applicants under their catalogue number HC315. In this case, however the end wall 10 is provided with an integral bearing seat 11 having a cylindrical seat portion 12, a part spherical seat portion 13 and a radially extending annular ledge 14 joining the seat portion 12 to the seat portion 13.
The bearing seat 11 is cold formed at additional stations of the press used to draw the motor casing and can be used selectively to support a self-aligning bearing 14 as shown in Figure 1 or a non self-aligning bearing such as a sleeve bearing 15 as snown in Figure 4 or a ball bearing (not shown).
The bearing 14 is held in contact with the part spherical seat portion 13 by a bearing retainer in the form of an annular spring clip 16 (see Figures 1 to 3) held captive with respect to the bearing seat 11 by an apertured metal plate 17 secured to the closed end-wall 10 by upset rivets (not shown).
The clip 16 shown is of convex dished shape having eight resilient fingers 18 provided with part spherical ends 19. Other forms of clip could however be employed.
A ring 19 of, for example, grease impregnated plastics material is provided in the cavity defined by the cylindrical seat portion 12 and the annular ledge 14 to stop the bearing 14 from falling out of its seat in a drop test.
The sleeve bearing 15 shown in Figure 4 is received in the cylindrical seat portion 12 as an interference fit. However, the sleeve bearing 15 could be held in its seat portion 12 by a retaining plate (not shown) secured to the end wall 10 such as by upset rivets.
An indentical bearing seat could be pressed in a metal end cap closing the open end of the motor casing.
The above embodiment is given by way of example only and various modifications will be apparent to persons skilled in the art without departing from the scope of the invention defined by the appended claims.

Claims (12)

1. An electric motor provided with at least one bearing seat which has been cold formed in a metal frame part of the motor, said at least one bearing seat comprising a cylindrical seat portion, a part-spherical seat portion disposed radially inwardly of the cylindrical seat portion, and a ledge extending radially inwardly from the cylindrical seat portion to the part-spherical seat portion, whereby in use a non self-aligning bearing can be received in the cylindrical seat portion or a self-aligning bearing can be held in contact with the part -spherical seat portion by bearing retaining means.
2. An electric motor as claimed in claim 1, wherein the frame part is a can-like motor casing closed at one end, the bearing seat having been cold formed in the closed end of the casing.
3. An electric motor as claimed in claim 1 or claim 2, wherein the frame part is a metal end cap for a can-like motor casing.
4. An electric motor as claimed in anyone of the preceding claims and having a self-aligning bearing held in contact with the part spherical seat portion by a bearing retainer.
5. An electric motor as claimed in claim 4, wherein the bearing retainer is in the form of an annular spring clip.
6. An electric motor as claimed in claim 5, wherein the spring clip is held captive with respect to the bearing seat by an apertured plate which is secured to the metal frame part of the motor at that end of the cylindrical seat portion distal from the spherical seat portion and which extends radially inwards of the cylindrical seat portion.
7. An electric motor as claimed in anyone of claims 1 to 3 and having a non self-aligning bearing received in the cylindrical seat portion as an interference fit.
8. An electric motor as claimed in anyone of claims 1 to 3 and having a non self-aligning bearing held in the cylindrical seat portion by a retaining plate secured to the metal frame part.
9. An electric motor as claimed in claim 7 or claim 8, wherein the non self-aligning bearing is a sleeve bearing.
10. An electric motor as claimed in claim 7 or claim 8, wherein the non self-aligning bearing is a ball bearing.
11. An electric motor provided with at least one bearing seat subsantially as hereinbefore described with reference to the accompanying drawings.
12. An electric motor as claimed in anyone of the preceding claims, wherein the motor is a fractional horsepower permanent magnet direct current electric motor.
GB08703417A 1987-02-13 1987-02-13 An electric motor provided with a versatile bearing seat Withdrawn GB2201736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08703417A GB2201736A (en) 1987-02-13 1987-02-13 An electric motor provided with a versatile bearing seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08703417A GB2201736A (en) 1987-02-13 1987-02-13 An electric motor provided with a versatile bearing seat

Publications (2)

Publication Number Publication Date
GB8703417D0 GB8703417D0 (en) 1987-03-18
GB2201736A true GB2201736A (en) 1988-09-07

Family

ID=10612293

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08703417A Withdrawn GB2201736A (en) 1987-02-13 1987-02-13 An electric motor provided with a versatile bearing seat

Country Status (1)

Country Link
GB (1) GB2201736A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887916A (en) * 1987-09-25 1989-12-19 Siemens Aktiengesellschaft Clamping plate for the retention of self-aligning friction bearing
US5360274A (en) * 1991-11-12 1994-11-01 Johnson Electric S.A. Self-aligning bearing
CN105071584A (en) * 2015-08-05 2015-11-18 佛山市威灵洗涤电机制造有限公司 Oil bearing pressure plate, oil bearing end cover assembly and motor
CN106329803A (en) * 2016-10-09 2017-01-11 珠海格力节能环保制冷技术研究中心有限公司 Bearing clamping ring and motor
CN108667190A (en) * 2018-03-23 2018-10-16 舟山市敏瑞科技咨询有限公司 A kind of low-power machine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB608425A (en) * 1945-04-23 1948-09-15 Singer Mfg Co Bearing assembly for dynamoelectric machines
GB949030A (en) * 1962-02-16 1964-02-05 Gen Motors Corp Dynamoelectric machine
GB998756A (en) * 1963-08-03 1965-07-21 Rudolf Zinsser Improvements in and relating to small electric motors
GB1090119A (en) * 1964-05-27 1967-11-08 Spyraflo Inc Improvements in or relating to self-aligning bearing units
GB1150185A (en) * 1966-12-17 1969-04-30 Bosch Gmbh Robert Improvements in Electrical Machines.
US3624434A (en) * 1970-11-20 1971-11-30 Gen Motors Corp Bearing support assembly for dynamoelectric machines and a method of manufacture therefor
EP0088946A2 (en) * 1982-03-16 1983-09-21 Siemens Aktiengesellschaft Small electrical motor with a device for adjusting the axial clearance
EP0119316A1 (en) * 1983-02-18 1984-09-26 VDO Adolf Schindling AG Motor casing

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB608425A (en) * 1945-04-23 1948-09-15 Singer Mfg Co Bearing assembly for dynamoelectric machines
GB949030A (en) * 1962-02-16 1964-02-05 Gen Motors Corp Dynamoelectric machine
GB998756A (en) * 1963-08-03 1965-07-21 Rudolf Zinsser Improvements in and relating to small electric motors
GB1090119A (en) * 1964-05-27 1967-11-08 Spyraflo Inc Improvements in or relating to self-aligning bearing units
GB1150185A (en) * 1966-12-17 1969-04-30 Bosch Gmbh Robert Improvements in Electrical Machines.
US3624434A (en) * 1970-11-20 1971-11-30 Gen Motors Corp Bearing support assembly for dynamoelectric machines and a method of manufacture therefor
EP0088946A2 (en) * 1982-03-16 1983-09-21 Siemens Aktiengesellschaft Small electrical motor with a device for adjusting the axial clearance
EP0119316A1 (en) * 1983-02-18 1984-09-26 VDO Adolf Schindling AG Motor casing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887916A (en) * 1987-09-25 1989-12-19 Siemens Aktiengesellschaft Clamping plate for the retention of self-aligning friction bearing
US5360274A (en) * 1991-11-12 1994-11-01 Johnson Electric S.A. Self-aligning bearing
CN105071584A (en) * 2015-08-05 2015-11-18 佛山市威灵洗涤电机制造有限公司 Oil bearing pressure plate, oil bearing end cover assembly and motor
CN106329803A (en) * 2016-10-09 2017-01-11 珠海格力节能环保制冷技术研究中心有限公司 Bearing clamping ring and motor
CN108667190A (en) * 2018-03-23 2018-10-16 舟山市敏瑞科技咨询有限公司 A kind of low-power machine

Also Published As

Publication number Publication date
GB8703417D0 (en) 1987-03-18

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)