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GB2178804A - Motor end cap bearing assembly - Google Patents

Motor end cap bearing assembly Download PDF

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Publication number
GB2178804A
GB2178804A GB08515616A GB8515616A GB2178804A GB 2178804 A GB2178804 A GB 2178804A GB 08515616 A GB08515616 A GB 08515616A GB 8515616 A GB8515616 A GB 8515616A GB 2178804 A GB2178804 A GB 2178804A
Authority
GB
United Kingdom
Prior art keywords
bearing
plate
assembly
ofthe
motor
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Withdrawn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
GB08515616A
Other versions
GB8515616D0 (en
Inventor
Arthur Pearson
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.)
Salter & Co Ltd G
Original Assignee
Salter & Co Ltd G
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 Salter & Co Ltd G filed Critical Salter & Co Ltd G
Priority to GB08515616A priority Critical patent/GB2178804A/en
Publication of GB8515616D0 publication Critical patent/GB8515616D0/en
Publication of GB2178804A publication Critical patent/GB2178804A/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Withdrawn legal-status Critical Current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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
    • 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
    • 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
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

A motor end cap 1 has a self-aligning tubular bearing 2 with part conical end surfaces 2a, 2b. One end 2b of bearing 2 is supported by a single locating and retaining plate 4. Plate 4 is retained in position by a plurality of radially outwardly directed legs 4b in engagement with wall 1c of chamber 3. <IMAGE>

Description

SPECIFICATION Improvements in or relating to motors This invention relates to improvements in or relating to motors and is particularly concerned with a motor cap end bearing assembly of a type having a selfaligning bearing (hereinafter referred to as ofthetype specified).
Motor cap end bearing assemblies ofthe aforementioned type have a chamber surrounding the self-aligning bearing. The inner end ofthe bearing is supported by a locating plate and a furtherthin, retaining ring is required to be located in the chamber in the finished assembly to retain the locating plate in position. Thethin retaining ring tendsto wave and distort when in position and the bearing assembly may thus not be able to withstand forces that it otherwise might be able to stand if the bearing location and retaining means wee improved.
It is an object of the present invention to provide a motor end cap bearing assembly of simpler construc- tion requiring fewer parts.
According to the present invention there is provided a motor end cap bearing assembly of the type specified comprising an end cap with said selfaligning bearing being oftubularform and supported atone end of a chamber by an end wall ofthe cap, the other end of the bearing being supported byasingle locating and retaining plate which locates said other end ofthe bearing relative to the chamber and the plate itself is retained in position relative to the chambey by a plurality of radially outwardly directed legs or teeth in engagement with a wall of the chamber.
Further according to the present invention there is provided a locating and retaining plate suitable for the motor end cap bearing assembly according to the immediately preceding paragraph.
Further according to the present invention there is provided a motor comprising at least one motor end cap bearing assembly as claimed in the preceding penultimate paragraph.
Preferably, the main plane ofthe locating andre- taining plate is generally parallel to the main plane of said end wall of the cap, and, preferably, said plate is spaced from said end wall by a spacer pad (which may be of felt material).
The edges of the legs or teeth may be straight or they may, in some embodiments, be arcute to suit. In one embodimentthe plate has 6 legs orteeth of.1 25" (0.3175 cm) length with six slots extending radially outwardlyfrom a central aperture of the plate which receives and supports the self-aligning bearing. Each siot is 0.1" (0.254) width. The external diameter and internal diameterofthe plate are 1.3" (3.3 cm) and .5" (1.27 cm) respectively. The plate is, preferably, of about .025" (.064 cm) thickness.
An embodiment of a motor end cap bearing assemblywill now be described, by waxy example only, with reference to the accompanying diagrammatic drawings in which: Figure 1 shows a sectional view of the motor end cap with bearing assembly; Figure 2 shows a n end view looking in the direction of Ain Figure 1,and Figure3shows a locating and retaining plate ofthe bearing assembly.
Referring to the figures in the drawings, a motor end cap 1 has a motor end cap bearing assembly comprising a self-aligning tubular bearing 2 of known type having part conical end surfaces 2a, 2b. The cap 1 defines a chamber3 and an end wall 1a ofthecap has an outwardly extending part-conical portion 1b supporting the self-aligning bearing 2 bythe partconical end surface 2a. The other end ofthe bearing 2b is supported by a single locating and retaining plate 4 (see Figure 3). An inwardly extending partconical portion 4a of plate 4 locates the end 2b ofthe bearing relative to chamber 3 and the plate itself is retained in position relative to the chamber 3 as shown by a plurality of radially outwardly directed legs or teeth 4b in engagement with a cylindrical wall 1 c of the chamber3.An annularfelt spacer pad 5 is provided in the chamber3 in between end wall 1 a and plate 4.
The relative dimensions of the plate as shown in Figure 3 are particularly advantageous. The width W of each slot S is 0.1(0.254cm). The external diameter and internal diameter of plate 4 are 1.3" (3.3 cm) and .5" (1.23 cm) respectively. The thickness of the plate is 0.25" (.064).
In an alternative embodiment (not shown) straight edges 4b' may be arcuateto provide a curved convex surfaceto contact the cylindrical wail 1 c.
In use, a shaft of the motor (not shown) passes axially th rough the bearing 2, and the aforedescribed construction ofthe bearing assembly using a single locating and retaining plate 4 suitably dimensioned both to locate the bearing properly and retain itself in position in the chamber is advantageous both in terms of cost and ease of assembly. Additionally, the bearing assembly may well be able to withstand greaterforces than hitherto achieved with other motor end cap bearing assemblies.
1. A motor end cap bearing assembly ofthe type specified comprising an end cap with said selfaligning bearing being oftubularform and supported atone end of a chamber byan end wall ofthe cap, the other end of the bearing being supported by a single locating and retaining plate which locates said other end ofthe bearing relative to the chamber and the plate itself is retained in position relative to the cham- ber by a plurality of radially outwardly directed legs or teeth in engagement with a wall of the chamber.
2. An assembly as claimed in Claim 1 in which the main plane ofthe locating and retaining plate is generally parallel to the main plane of said end wall ofthe cap.
3. An assembly as claimed in Claim 1 or Claim 2 in which said plate is spaced from said end wall by a spacer pad.
4. An assembly as claimed in Claim 3 in which said spacer pad is offelt material.
5. An assembly as claimed in anyone ofthe pre- ceding claims in which the edges of the legs orteeth are straight or, alternatively arcuate.
6. An assembly as claimed in anyone ofthe pre-
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (13)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improvements in or relating to motors This invention relates to improvements in or relating to motors and is particularly concerned with a motor cap end bearing assembly of a type having a selfaligning bearing (hereinafter referred to as ofthetype specified). Motor cap end bearing assemblies ofthe aforementioned type have a chamber surrounding the self-aligning bearing. The inner end ofthe bearing is supported by a locating plate and a furtherthin, retaining ring is required to be located in the chamber in the finished assembly to retain the locating plate in position. Thethin retaining ring tendsto wave and distort when in position and the bearing assembly may thus not be able to withstand forces that it otherwise might be able to stand if the bearing location and retaining means wee improved. It is an object of the present invention to provide a motor end cap bearing assembly of simpler construc- tion requiring fewer parts. According to the present invention there is provided a motor end cap bearing assembly of the type specified comprising an end cap with said selfaligning bearing being oftubularform and supported atone end of a chamber by an end wall ofthe cap, the other end of the bearing being supported byasingle locating and retaining plate which locates said other end ofthe bearing relative to the chamber and the plate itself is retained in position relative to the chambey by a plurality of radially outwardly directed legs or teeth in engagement with a wall of the chamber. Further according to the present invention there is provided a locating and retaining plate suitable for the motor end cap bearing assembly according to the immediately preceding paragraph. Further according to the present invention there is provided a motor comprising at least one motor end cap bearing assembly as claimed in the preceding penultimate paragraph. Preferably, the main plane ofthe locating andre- taining plate is generally parallel to the main plane of said end wall of the cap, and, preferably, said plate is spaced from said end wall by a spacer pad (which may be of felt material). The edges of the legs or teeth may be straight or they may, in some embodiments, be arcute to suit. In one embodimentthe plate has 6 legs orteeth of.1 25" (0.3175 cm) length with six slots extending radially outwardlyfrom a central aperture of the plate which receives and supports the self-aligning bearing. Each siot is 0.1" (0.254) width. The external diameter and internal diameterofthe plate are 1.3" (3.3 cm) and .5" (1.27 cm) respectively. The plate is, preferably, of about .025" (.064 cm) thickness. An embodiment of a motor end cap bearing assemblywill now be described, by waxy example only, with reference to the accompanying diagrammatic drawings in which: Figure 1 shows a sectional view of the motor end cap with bearing assembly; Figure 2 shows a n end view looking in the direction of Ain Figure 1,and Figure3shows a locating and retaining plate ofthe bearing assembly. Referring to the figures in the drawings, a motor end cap 1 has a motor end cap bearing assembly comprising a self-aligning tubular bearing 2 of known type having part conical end surfaces 2a, 2b. The cap 1 defines a chamber3 and an end wall 1a ofthecap has an outwardly extending part-conical portion 1b supporting the self-aligning bearing 2 bythe partconical end surface 2a. The other end ofthe bearing 2b is supported by a single locating and retaining plate 4 (see Figure 3). An inwardly extending partconical portion 4a of plate 4 locates the end 2b ofthe bearing relative to chamber 3 and the plate itself is retained in position relative to the chamber 3 as shown by a plurality of radially outwardly directed legs or teeth 4b in engagement with a cylindrical wall 1 c of the chamber3.An annularfelt spacer pad 5 is provided in the chamber3 in between end wall 1 a and plate 4. The relative dimensions of the plate as shown in Figure 3 are particularly advantageous. The width W of each slot S is 0.1(0.254cm). The external diameter and internal diameter of plate 4 are 1.3" (3.3 cm) and .5" (1.23 cm) respectively. The thickness of the plate is 0.25" (.064). In an alternative embodiment (not shown) straight edges 4b' may be arcuateto provide a curved convex surfaceto contact the cylindrical wail 1 c. In use, a shaft of the motor (not shown) passes axially th rough the bearing 2, and the aforedescribed construction ofthe bearing assembly using a single locating and retaining plate 4 suitably dimensioned both to locate the bearing properly and retain itself in position in the chamber is advantageous both in terms of cost and ease of assembly. Additionally, the bearing assembly may well be able to withstand greaterforces than hitherto achieved with other motor end cap bearing assemblies. CLAIMS
1. A motor end cap bearing assembly ofthe type specified comprising an end cap with said selfaligning bearing being oftubularform and supported atone end of a chamber byan end wall ofthe cap, the other end of the bearing being supported by a single locating and retaining plate which locates said other end ofthe bearing relative to the chamber and the plate itself is retained in position relative to the cham- ber by a plurality of radially outwardly directed legs or teeth in engagement with a wall of the chamber.
2. An assembly as claimed in Claim 1 in which the main plane ofthe locating and retaining plate is generally parallel to the main plane of said end wall ofthe cap.
3. An assembly as claimed in Claim 1 or Claim 2 in which said plate is spaced from said end wall by a spacer pad.
4. An assembly as claimed in Claim 3 in which said spacer pad is offelt material.
5. An assembly as claimed in anyone ofthe pre- ceding claims in which the edges of the legs orteeth are straight or, alternatively arcuate.
6. An assembly as claimed in anyone ofthe pre- ceding claims in which the plate has six legs or teeth of .125(0.3175cm) length with six slots extending radially outwardlyfrom a central aperture of the plate which receives and supports the self-aligning bearing.
7. An assembly as claimed in Claim 6 in which each slot is 0.1" (0.254 cm)width.
8. An assembly as claimed in Claim 6 or Claim 7 in which the external diameter and internal diameter of the plate are 1.3" (3.3 cm) and .5" (1.27cm) respectively.
9. An assembly as claimed in any one of the preceding claims in which the plate is of about .025" (.064 cm) thickness.
10. A motor end cap bearing assembly substantially as herein described with reference to the accom- panying drawings.
11. An assembly as claimed in Claim 1 in which the plate is substantially as herein described with reference to Figure 3 of the accompanying drawings.
12. A motor comprising at least one motor end cap bearing assembly as claimed in any one ofthe preceding claims.
13. A locating and retaining platesuitableforthe motor end cap bearing assembly as claimed in Claim 1.
GB08515616A 1985-06-20 1985-06-20 Motor end cap bearing assembly Withdrawn GB2178804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08515616A GB2178804A (en) 1985-06-20 1985-06-20 Motor end cap bearing assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08515616A GB2178804A (en) 1985-06-20 1985-06-20 Motor end cap bearing assembly

Publications (2)

Publication Number Publication Date
GB8515616D0 GB8515616D0 (en) 1985-07-24
GB2178804A true GB2178804A (en) 1987-02-18

Family

ID=10581048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08515616A Withdrawn GB2178804A (en) 1985-06-20 1985-06-20 Motor end cap bearing assembly

Country Status (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213877A (en) * 1988-01-12 1989-08-23 Jidosha Denki Kogyo Kk Bearing holder
GB2327986A (en) * 1997-07-31 1999-02-10 Sunonwealth Electr Mach Ind Co Bearing mounting structure for the fan motor
CN103855845A (en) * 2014-03-28 2014-06-11 浙江泰达微电机有限公司 Micro-motor rotary shaft protection mechanism
DE102015213022A1 (en) * 2015-07-13 2017-01-19 Bühler Motor GmbH electric motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB522668A (en) * 1939-02-14 1940-06-24 M W Woods Ltd Improvements in and relating to bearing structures for electric motors
GB780237A (en) * 1954-08-04 1957-07-31 Waldes Kohinoor Inc Improvements in or relating to self-locking retaining rings
GB870168A (en) * 1957-11-07 1961-06-14 United Carr Fastener Corp Improvements in and relating to fastening devices
GB1090119A (en) * 1964-05-27 1967-11-08 Spyraflo Inc Improvements in or relating to self-aligning bearing units

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB522668A (en) * 1939-02-14 1940-06-24 M W Woods Ltd Improvements in and relating to bearing structures for electric motors
GB780237A (en) * 1954-08-04 1957-07-31 Waldes Kohinoor Inc Improvements in or relating to self-locking retaining rings
GB870168A (en) * 1957-11-07 1961-06-14 United Carr Fastener Corp Improvements in and relating to fastening devices
GB1090119A (en) * 1964-05-27 1967-11-08 Spyraflo Inc Improvements in or relating to self-aligning bearing units

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2213877A (en) * 1988-01-12 1989-08-23 Jidosha Denki Kogyo Kk Bearing holder
GB2327986A (en) * 1997-07-31 1999-02-10 Sunonwealth Electr Mach Ind Co Bearing mounting structure for the fan motor
CN103855845A (en) * 2014-03-28 2014-06-11 浙江泰达微电机有限公司 Micro-motor rotary shaft protection mechanism
DE102015213022A1 (en) * 2015-07-13 2017-01-19 Bühler Motor GmbH electric motor

Also Published As

Publication number Publication date
GB8515616D0 (en) 1985-07-24

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