FR2508735A1 - DRIVING DEVICE, ESPECIALLY AN ELECTRIC MOTOR FOR FURNACE AIR CIRCULATION BLOWERS - Google Patents
DRIVING DEVICE, ESPECIALLY AN ELECTRIC MOTOR FOR FURNACE AIR CIRCULATION BLOWERS Download PDFInfo
- Publication number
- FR2508735A1 FR2508735A1 FR8211365A FR8211365A FR2508735A1 FR 2508735 A1 FR2508735 A1 FR 2508735A1 FR 8211365 A FR8211365 A FR 8211365A FR 8211365 A FR8211365 A FR 8211365A FR 2508735 A1 FR2508735 A1 FR 2508735A1
- Authority
- FR
- France
- Prior art keywords
- bearing
- bearings
- bearing body
- drive device
- spring
- 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.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005339 levitation Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
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
- F16C25/00—Bearings for exclusively rotary movement adjustable for wear or play
- F16C25/06—Ball or roller bearings
- F16C25/08—Ball or roller bearings self-adjusting
- F16C25/083—Ball or roller bearings self-adjusting with resilient means acting axially on a race ring to preload the bearing
-
- 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
- F16C27/04—Ball or roller bearings, e.g. with resilient rolling bodies
-
- 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
- F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
- F16C27/066—Ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
-
- 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
- H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
- H02K5/1735—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at only one end 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
-
- 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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Support Of The Bearing (AREA)
- Motor Or Generator Frames (AREA)
Abstract
DISPOSITIF D'ENTRAINEMENT COMPORTANT UN GROUPE D'ENTRAINEMENT DONT LA PARTIE DE SORTIE REPOSE DANS DES COUSSINETS D'UN CORPS DE PALIER FIXE. LES COUSSINETS (PALIERS A BILLES 7) SONT RELIES AU CORPS DE PALIER 2 PAR AU MOINS UN ELEMENT DE PALIER ELASTIQUEMENT SOUPLE CONSTITUE PAR EXEMPLE PAR UNE MASSE DE CHARGE 8. ON OBTIENT AINSI, NOTAMMENT POUR DES SOUFFLANTES D'AIR DE CIRCULATION DE FOURS, UN DISPOSITIF D'ENTRAINEMENT DE FABRICATION SIMPLIFIEE TOUT EN ETANT TRES INSONORE.DRIVING DEVICE INCLUDING A DRIVE UNIT OF WHICH THE OUTPUT PART IS RESIDED IN THE BUSHINGS OF A FIXED BEARING BODY. THE BEARINGS (BALL BEARINGS 7) ARE CONNECTED TO THE BEARING BODY 2 BY AT LEAST ONE ELASTICALLY FLEXIBLE BEARING ELEMENT CONSTITUTED FOR EXAMPLE BY A LOAD MASS 8. THUS IS OBTAINED, ESPECIALLY FOR OVEN CIRCULATION AIR BLOWERS, A SIMPLIFIED MANUFACTURING TRAINING DEVICE WHILE BEING VERY SOUND.
Description
Dispositif d'entranement, notamment moteur soufflantes de circulationTraining device, especially circulating fan motor
d'air de foursof furnace air
La présente invention concerne un dispositif d'entrat- The present invention relates to a training device
nement, notamment un moteur électrique pour soufflantes de circulation d'air de fours, comportant un groupe d'entraînement dont la partie de sortie repose dans des coussinets d'un corps including an electric motor for furnace air circulation blowers, having a drive unit whose outlet portion rests in bushings of a body
de palier fixe -fixed bearing -
Dans les dispositifs d'entraînement, notamment les moteurs de soufflantes de circulation d'air de fours, qui sont exposés à des températures élevées, on recherche d'une part une sustentation précise exempte de bruit, avec ajustages de paliers exacts, de la partie de sortie, mais il faut d'autre part que le matériau de palier exposé à de fortes variations de température puisse se dilater sans encombre, ce qui fait recommander à In the drive devices, in particular the furnace air circulation blower motors, which are exposed to high temperatures, one seeks on the one hand a precise noise-free lift, with exact bearing adjustments, of the part the bearing material exposed to strong temperature variations can expand without
nouveau l'utilisation d'une sustentation grossière Ces der- again the use of a crude levitation These last
nières considérations ont fait opter en général dans la pratique pour des paliers grossiers à bruit intense à l'exclusion d'un In practice, however, considerations have generally made it possible for coarse loud noise levels, to the exclusion of
isolement thermique coûteux.costly thermal insulation.
L'invention a pour objet un dispositif d'entraînement du type précité agencé en sorte que, d'un côté l'on puisse renoncer à une sustentation fine et une exactitude d'ajustement coûteuses et ne laissant guère place à du jeu et que de l'autre The invention relates to a drive device of the aforementioned type arranged so that, on one hand it can give up fine levitation and adjustment accuracy expensive and leaving little room for play and that of the other
côté on conserve-néanmoins une absence poussée de bruit. On the other hand, there is still a lack of noise.
Ce dispositif d'entraînement est caractérisé par le fait que les coussinets, ou roulements à billes, sont reliés This driving device is characterized by the fact that the bearings, or ball bearings, are connected
au colp S de palier par au moins un élément de palier élastique- at the bearing collar S by at least one elastic bearing element
ment souple tel qu'une masse de charge ou des éléments de ressort. flexible element such as a load mass or spring elements.
La sustentation du coussinet, par exemple d'un relati- The lift of the pad, for example from a relati-
vement grand roulement à billes,dans un élément de palier élastiquement souple, de préférence constitué par un matériau amortisseur du bruit, dispense de poser désormais quelque exigence que ce soit en ce qui concerne la précision d'ajustage du coussinet dans le corps de palier fixe Toutes les tolérances de palier sont complètement compensées par l'introduction de l'élément de palier élastiquement souple dans le siège ball bearing, in a resiliently flexible bearing element, preferably consisting of a sound-absorbing material, dispenses with any requirement as regards the fitting accuracy of the bushing in the fixed bearing body. All bearing tolerances are fully compensated by the introduction of the resiliently flexible bearing element into the seat
et l'on obtient en même temps un haut degré de concentricité. and at the same time a high degree of concentricity is achieved.
Dans un mode de réalisation préféré de l'invention, le ou les coussinets, de préférence des roulements à billes, sont noyés dans une masse de charge élastique On peut utiliser comme masse de charge un matériau amortissant particulièrement le bruit tel qu'un caoutchouc de silicone, un mélange de poudre de métal et de poudre de matière plastique ou analogue Le noyage du coussinet peut s'effectuer à la machine, par exemple dans un processus d'injection, après centrage préalable de la In a preferred embodiment of the invention, the bearing or pads, preferably ball bearings, are embedded in an elastic load mass. A particularly damping material such as a rubber can be used as a filler mass. silicone, a mixture of metal powder and plastic powder or the like The padding can be flooded by machine, for example in an injection process, after centering the machine beforehand.
partie de sortie par rapport au corps de palier. outlet portion relative to the bearing body.
L'invention permet d'utiliser pour la sustentation de The invention makes it possible to use for the lift of
la partie de sortie un palier grossier qui soit également insen- the exit part a rough landing which is also insensi-
sible à des variations de température extrêmes On obtient néanmoins un degré élevé d'absence de bruit du fait de l'élément, ou matériau, élastique de palier qui amortit en même temps le bruit La fabrication se trouve de la sorte fortement simplifiée et les frais diminués, le corps de palier pouvant par exemple être formé d'une partie brute moulée par injection sans autre However, a high degree of absence of noise is obtained due to the element, or material, bearing elastic which at the same time dampens the noise. The manufacture is thus greatly simplified and the costs the bearing body may for example be formed of a raw part injection-molded without further
usinage de précision.precision machining.
Suivant d'autres caractéristiques avantageuses possibles According to other advantageous features possible
de l'invention: le corps de palier présente pour chaque coussi- of the invention: the bearing body presents for each cushion
net une ouverture de palier dans laquelle ledit coussinet est insérable avec jeu radial et la cavité annulaire est comblée net a bearing opening in which said pad is insertable with radial clearance and the annular cavity is filled
d'une masse de charge élastique; le ou les coussinets, cons- an elastic load mass; the pad or pads,
titués de préférence par des roulements à billes, sont maintenus dans des éléments de ressort tendus entre lesdits coussinets et le corps de palier; l'élément de ressort utilisé est un ressort en arc sous tension préalable radiale et axiale par rapport au coussinet. preferably arranged by ball bearings, are held in spring elements tensioned between said bearings and the bearing body; the spring element used is a pre-tensioned radial spring that is radial and axial with respect to the bearing.
L'invention sera mieux comprise à l'aide de la descrip- The invention will be better understood by means of the description
tion détaillée de deux modes de réalisation pris comme exemples non limitatifs et illustrés schématiquement par le dessin annexé, sur lequel: DETAILED DESCRIPTION OF TWO EMBODIMENTS TAKEN AS NON-LIMITATIVE EXAMPLES AND SHOWN SCHEMATICALLY BY THE APPENDIX DRAWING, IN WHICH:
3 2 S 108 ? 553 2 S 108? 55
la figure l est une vue en coupe d'une première forme de réalisation du dispositif d'entraînement selon ladite invention; la figure 2 est une coupe partielle du dispositif d'entratnement selon l'invention dans une forme de réalisation modifiée. Le dispositif d'entraînement considéré sur les figures est un moteur électrique k rotor intérieur, bien que l'invention soit bien entendu utilisable aussi pour un moteur à rotor Figure 1 is a sectional view of a first embodiment of the driving device according to the invention; Figure 2 is a partial section of the drive device according to the invention in a modified embodiment. The drive device considered in the figures is an electric motor k inner rotor, although the invention is of course also usable for a rotor motor
extérieur* La référence t désigne l'arbre de sortie et la réfé- outside * The reference t designates the output shaft and the reference
rence 2 un corps de palier fixe agencé en forme de carter A l'intérieur du corps de palier 2 se trouve sur l'arbre de sortie 1, dans la zone 3, un enroulement de rotor non particulièrement représenté, tandis que l'enroulement de stator correspondant peut #tre logé dans la zone 4 du corps de palier 2 La référence désigne des t 8 les de rotor feuilletées Le corps de palier 2 comporte sur chacune de ses extrémités axiales une ouverture de palier 6, 6 ' La largeurhors tout de ces ouvertures de palier 6, 6 ' est supérieure au diamètre de roulements à billes 7 représentant des coussinets, si bien que lesdits roulements à billes 7 peuvent être insérés avec jeu radial dans les ouvertures de palier 6, 6 ' cylindriques et formant des écuelles Dans l'exemple de FIG. 2 shows a stationary bearing body arranged in the form of a housing. Inside the bearing housing 2 is located on the output shaft 1, in the zone 3, a rotor winding not particularly represented, while the winding of The corresponding stator may be housed in the zone 4 of the bearing body 2. The reference designates laminated rotor tees. The bearing body 2 has on each of its axial ends a bearing opening 6, 6 '. The width outside any of these bearing openings 6, 6 'is greater than the diameter of ball bearings 7 representing bearings, so that said ball bearings 7 can be inserted with radial clearance in the cylindrical bearing openings 6, 6' and forming bowls 'example of
réalisation selon la figure 1, la cavité comprise entre le roule- embodiment according to FIG. 1, the cavity between the wheel and
ment k billes 7 et le corps de palier 2 est comblée par une k ball 7 and the bearing body 2 is filled by a
masse de charge 8, par exemple de caoutchouc de silicone, élas- charge mass 8, for example of silicone rubber,
tique et demeurant élastique Pour maintenir sans rotation possible cette pièce moulée en masse de charge 8,des alésages comblés par la masse de charge sont ménagés dans le corps de palier 2 en forme de douille Les ouvertures de palier 6 et 6 ' sont limitées vers le milieu par des épaulements annulaires 10 et 10 ', et la masse de charge se trouve aussi dans la zone comprise entre les surfaces frontales latérales des roulements In order to maintain this molded part in the mass of load 8 without rotation, bores filled by the mass of filler are formed in the bearing body 2 in the form of a bushing. Bearing openings 6 and 6 'are limited to middle by annular shoulders 10 and 10 ', and the mass of filler is also in the area between the lateral end faces of the bearings
à billes 7 et ces épaulements 10, 10 '. with balls 7 and these shoulders 10, 10 '.
à la différence de l'exemple selon la figure 1, l'exemple de réalisation selon la figure Z comporte, au lieu d'une masse de charge, un élément de ressort sous tension préalable entre le roulement à billes 7 et le corps de palier 2 sous la forme d'un ressort de compression 11, ou de rondelles Belleville, soutenu sur l'arbre de sortie 1 ainsi que sous la forme d'un ressort en are 12 essentiellement annulaire lui aussi Ce ressort en are 12 présente un gradin radial 13, une partie arquée 14 ainsi qu'un rebord annulaire 15,également radial lui aussi,qui pénètre dans une rainure, par exemple périphérique,à l'intérieur de l'ouverture de palier 6 du corps unlike the example according to FIG. 1, the exemplary embodiment according to FIG. Z comprises, instead of a load mass, a pre-tensioned spring element between the ball bearing 7 and the bearing body 2 in the form of a compression spring 11, or Belleville washers, supported on the output shaft 1 and in the form of a spring are substantially annular 12 also This spring are 12 has a radial step 13, an arcuate portion 14 and an annular flange 15, also radial, which penetrates into a groove, for example peripheral, inside the bearing opening 6 of the body
2 et emp 9 che toute rotation du ressort en arc Le gradin annu- 2 and prevents any rotation of the arc spring.
laire 13 et la partie arquée 14 enferment axialement et radia- 13 and the arcuate portion 14 enclose axially and radially
lement le roulement k billes 7 sous une tension préalable méca- the ball bearing 7 under a prior mechanical tension.
nique, celle-ci exercée en direction axiale par le ressort de compression 11, sur lequel le roulement à billes s'appuie élastiquement De l'autre c 8 té, le ressort de compression 11 This spring is exerted in the axial direction by the compression spring 11, on which the ball bearing bears elastically. On the other side, the compression spring 11
s'appuie sur l'épaulement annulaire 10. relies on the annular shoulder 10.
Dans les deux exemples, les roulements à billes 7 In both examples, the ball bearings 7
peuvent céder élastiquement dans les deux directions de déplace- can yield elastically in both directions of movement.
ment représentées sur la figure 2 par les flèches A et B, tandis shown in Figure 2 by the arrows A and B, while
qu'ils s'appuient franchement sur l'arbre de sortie 1. that they lean frankly on the output shaft 1.
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813125721 DE3125721A1 (en) | 1981-06-30 | 1981-06-30 | DRIVE DEVICE, PREFERRED ELECTRIC MOTOR FOR AIR CONDITIONER BLOWERS FROM OVENS |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2508735A1 true FR2508735A1 (en) | 1982-12-31 |
Family
ID=6135744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8211365A Pending FR2508735A1 (en) | 1981-06-30 | 1982-06-29 | DRIVING DEVICE, ESPECIALLY AN ELECTRIC MOTOR FOR FURNACE AIR CIRCULATION BLOWERS |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE3125721A1 (en) |
FR (1) | FR2508735A1 (en) |
GB (1) | GB2102512A (en) |
IT (1) | IT1152255B (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3346697A1 (en) * | 1983-12-23 | 1985-07-11 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Bearing for the armature shaft of the drive motor, which is constructed as universal motor, of a hand-held machine tool which has a two-piece housing |
JPH0629610B2 (en) * | 1985-04-19 | 1994-04-20 | 株式会社日立製作所 | Spindle mechanism of magnetic disk device |
DE4029360C2 (en) * | 1990-09-15 | 1994-10-06 | Piller Gmbh Co Kg Anton | Bearing unit for a roller bearing shaft of an electrical machine |
DE4206761C2 (en) * | 1992-03-04 | 1995-01-19 | Licentia Gmbh | Bearing arrangement for rotors of electrical machines |
JP3489283B2 (en) * | 1994-10-03 | 2004-01-19 | 株式会社デンソー | motor |
IT241552Y1 (en) * | 1996-04-05 | 2001-05-09 | Irca Spa | CONVECTOR UNIT |
DE19650428A1 (en) * | 1996-12-05 | 1998-06-10 | Alsthom Cge Alcatel | Miniature electric motor, such as split-pole asynchronous motor |
DE19708888A1 (en) * | 1997-03-05 | 1998-09-10 | Itt Mfg Enterprises Inc | Bearings, especially for a motor-pump unit |
DE19805844A1 (en) * | 1998-02-13 | 1999-08-19 | Itt Mfg Enterprises Inc | Electric motor with at least one bearing |
DE19853381A1 (en) * | 1998-11-19 | 2000-05-25 | Continental Teves Ag & Co Ohg | Mounting for motor shaft has inner and outer ring, conical mounting hole, housing, and pressure element as sprung ring or disc |
JP2001208082A (en) * | 1999-11-16 | 2001-08-03 | Minebea Co Ltd | Pivot bearing |
DE10007437B4 (en) * | 2000-02-18 | 2016-07-07 | Skf Gmbh | Method for fixing at least one bearing in a bearing receptacle and bearing assembly produced therewith |
JP2001248704A (en) * | 2000-03-07 | 2001-09-14 | Fuji Photo Film Co Ltd | Ball screw feeding mechanism |
DE102010054833A1 (en) | 2010-12-16 | 2012-06-21 | Thyssenkrupp Presta Ag | Damping element for an elastically mounted spindle drive |
WO2024081398A1 (en) * | 2022-10-14 | 2024-04-18 | Novanta Corporation | Systems and methods for providing wobble reduction in galvanometers |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504776A (en) * | 1945-01-15 | 1950-04-18 | Gen Electric | Supporting structure |
DE934447C (en) * | 1953-04-12 | 1955-10-20 | Bayerische Motoren Werke Ag | Securing for ball bearing seats using a resilient mounting ring |
US2752514A (en) * | 1950-06-14 | 1956-06-26 | Junior Tool Company | Electric motor housing |
FR2240560A1 (en) * | 1973-08-09 | 1975-03-07 | Bosch Gmbh Robert | Electric motor long life bearing with elastic intermediate ring - has ring between outer bearing ring and bearing assembly hole in end plate |
DE2846277A1 (en) * | 1978-10-24 | 1980-04-30 | Bosch Siemens Hausgeraete | Electric fan for kitchen oven or air cooler - has one bearing plate as integral part of bracket that holds motor to casing |
-
1981
- 1981-06-30 DE DE19813125721 patent/DE3125721A1/en not_active Withdrawn
-
1982
- 1982-05-13 GB GB08213878A patent/GB2102512A/en not_active Withdrawn
- 1982-06-18 IT IT21949/82A patent/IT1152255B/en active
- 1982-06-29 FR FR8211365A patent/FR2508735A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2504776A (en) * | 1945-01-15 | 1950-04-18 | Gen Electric | Supporting structure |
US2752514A (en) * | 1950-06-14 | 1956-06-26 | Junior Tool Company | Electric motor housing |
DE934447C (en) * | 1953-04-12 | 1955-10-20 | Bayerische Motoren Werke Ag | Securing for ball bearing seats using a resilient mounting ring |
FR2240560A1 (en) * | 1973-08-09 | 1975-03-07 | Bosch Gmbh Robert | Electric motor long life bearing with elastic intermediate ring - has ring between outer bearing ring and bearing assembly hole in end plate |
DE2846277A1 (en) * | 1978-10-24 | 1980-04-30 | Bosch Siemens Hausgeraete | Electric fan for kitchen oven or air cooler - has one bearing plate as integral part of bracket that holds motor to casing |
Also Published As
Publication number | Publication date |
---|---|
IT8221949A0 (en) | 1982-06-18 |
DE3125721A1 (en) | 1983-01-13 |
IT1152255B (en) | 1986-12-31 |
GB2102512A (en) | 1983-02-02 |
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