FR2803130A1 - Fixing, for rear bearing of electrical machine on vehicle, comprises claw which is secured to support by feet and exerts central pressure on bearing so that all round watertightness is achieved - Google Patents
Fixing, for rear bearing of electrical machine on vehicle, comprises claw which is secured to support by feet and exerts central pressure on bearing so that all round watertightness is achieved Download PDFInfo
- Publication number
- FR2803130A1 FR2803130A1 FR9916528A FR9916528A FR2803130A1 FR 2803130 A1 FR2803130 A1 FR 2803130A1 FR 9916528 A FR9916528 A FR 9916528A FR 9916528 A FR9916528 A FR 9916528A FR 2803130 A1 FR2803130 A1 FR 2803130A1
- Authority
- FR
- France
- Prior art keywords
- forming
- bearing
- support
- rear bearing
- electric machine
- 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
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Classifications
-
- 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
- H02K5/15—Mounting arrangements for bearing-shields or end plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Abstract
Description
PERFECTIONNEMENTS A LA FIXATION D'UN PALIER ARRIERE D'UNE MACHINE ELECTRIQUE DE VEHICULE AUTOMOBILE, TELLE QU'UN DEMARREUR OU UN ALTERNO-DEMARREUR La présente invention est relative à la fixation d'un palier arriere d'une machine électrique de véhicule automobile, telle qu'un démarreur un alterno-demarreur. IMPROVEMENTS ON FIXING A REAR BEARING OF AN ELECTRIC MACHINE OF A MOTOR VEHICLE, SUCH AS A STARTER OR AN ALTERNO-STARTER The present invention relates to the fixing of a rear bearing of an electric machine of a motor vehicle, such as a starter an alternator-starter.
On représenté de façon schématique sur les figures 1 et 2 une structure d'assemblage d'une machine électrique conforme à un état de la technique connu. There is shown schematically in Figures 1 and 2 an assembly structure of an electric machine according to a known state of the art.
Cette structure comporte une culasse statorique 1 qui est interposée entre un palier arrière 3 et un support 2. This structure comprises a stator yoke 1 which is interposed between a rear bearing 3 and a support 2.
Le palier arrière 3 est fixé sur le support 2 à l'aide de tirants 4 qui plaquent ledit palier arrière 3 sur ladite culasse 1. The rear bearing 3 is fixed to the support 2 by means of tie rods 4 which flatten said rear bearing 3 on said cylinder head 1.
La culasse 1 est maintenue en place par le serrage exercé par le palier arrière 3. Egalement, tout ou partie de ladite culasse 1 peut être d'une pièce avec le support 3 ou le palier arrière 3 Ces tirants 4 peuvent s'étendre soit à l'intérieur soit à l'extérieur de la culasse 1. Ils sont vissés dans le support 2 et mettent en pression l'assemblage par l'appui de leur tête sur la surface externe du palier arrière 3. The cylinder head 1 is held in place by the tightening exerted by the rear bearing 3. Also, all or part of said cylinder head 1 may be in one piece with the support 3 or the rear bearing 3 These tie rods 4 may extend either to inside or outside the cylinder head 1. They are screwed into the support 2 and pressurize the assembly by pressing their head on the external surface of the rear bearing 3.
De telles structures ne sont pas sans poser certains problèmes. Dans le cas où les tirants 4 s'étendent à l'extérieur de la culasse 1, leur nombre est généralement de deux, diamétralement opposés. Such structures are not without their problems. In the case where the tie rods 4 extend outside the cylinder head 1, their number is generally two, diametrically opposite.
Le palier arrière 3 est alors convenablement plaqué sur la culasse 1 au voisinage immédiat des tirants 4, c'est à dire au niveau des quadrants référencés par 01 et 03 sur la figure 2. The rear bearing 3 is then suitably pressed against the cylinder head 1 in the immediate vicinity of the tie rods 4, that is to say at the level of the quadrants referenced by 01 and 03 in FIG. 2.
Par contre, du fait de la déformation élastique du palier 3, il se pose un problème d'étanchéité au niveau des quadrants décalés de 7[12 par rapport aux tirants 4 (quadrants 02 et 04 sur la figure 2). On the other hand, due to the elastic deformation of the bearing 3, there is a sealing problem at the level of the quadrants offset by 7 [12 relative to the tie rods 4 (quadrants 02 and 04 in FIG. 2).
Par ailleurs, que les tirants soient à l'intérieur ou à l'extérieur de la culasse, l'utilisation d'une visseuse pour le montage et la réalisation des trous taraudés dans le support est nécessaire, ce qui augmente les temps d'assemblage et introduit des risques de dévissage au cours la vie passive du démarreur, ainsi que des risques de malfaçon des filets rendant le vissage difficile et inefficace. Furthermore, whether the tie rods are inside or outside the cylinder head, the use of a screwdriver for mounting and making the tapped holes in the support is necessary, which increases assembly times. and introduces risks of unscrewing during the passive life of the starter, as well as risks of faulty threads making screwing difficult and ineffective.
De plus, dans le cas de tirants extérieurs, des oreilles doivent être prevues sur le palier arrière, ce qui augmente le coût, le poids et l'encombrement de la structure. In addition, in the case of external tie rods, ears must be provided on the rear bearing, which increases the cost, the weight and the bulk of the structure.
Un but de l'invention est de résoudre ces problèmes. An object of the invention is to solve these problems.
A cet effet, l'invention propose une machine électrique véhicule automobile comportant une culasse statorique interposée entre partie formant support et un palier arrière et comportant également des moyens pour fixer ledit palier arrière sur la partie formant support, caractérisee en ce il comporte un ou plusieurs éléments formant agrafe qui s'étend(ent) entre la partie formant support et le palier arrière et exercent) celui-ci effort élastique par lequel ledit palier est plaqué sur la culasse statorique. To this end, the invention provides an electric motor vehicle machine comprising a stator yoke interposed between the support part and a rear bearing and also comprising means for fixing said rear bearing to the support part, characterized in that it comprises one or more clip elements which extend (ent) between the support part and the rear bearing and exert) the latter elastic force by which said bearing is pressed against the stator yoke.
Une telle machine est avantageusement complétée par les différentes caractéristiques suivantes prises seules ou selon toutes leurs combinaisons possibles - ou les éléments formant agrafe est (sont) en appui sur une zone centrale du palier et exercent) un effort élastique axial sur celui-ci ; - moins une partie d'un élément formant agrafe présente une forme générale en U, les deux branches de ladite partie en U étant fixées sur la partie formant support, la partie médiane étant en appui par son centre sur le palier; - le ou les éléments formant agrafe est (sont) en appui sur une zone annulaire du palier arrière centrée sur l'axe de celui-ci ; - elle comporte plusieurs éléments formant agrafes indépendants qui se terminent par des crochets aptes à se positionner en appui sur ladite zone annulaire ; - la partie formant support comporte des lumières aptes à recevoir des crochets complémentaires pour la fixation du (ou des) élément(s) formant agrafe ; - le (ou les) éléments formant agrafe est (sont) fixé(s) sur la partie formant support par des moyens de verrouillage élastiques complémentaires ; - le (ou les) éléments formant agrafe est (sont) fixé(s) sur la partie formant support par rivetage. Such a machine is advantageously supplemented by the following different characteristics taken alone or in all their possible combinations - or the staple elements is (are) resting on a central zone of the bearing and exert) an axial elastic force on it; - Less part of a staple element has a general U-shape, the two branches of said U-shaped part being fixed on the support part, the middle part being supported by its center on the bearing; - The clip element (s) is (are) supported on an annular zone of the rear bearing centered on the axis thereof; - It comprises several elements forming independent staples which end in hooks capable of being positioned in abutment on said annular zone; - The support part comprises lights capable of receiving additional hooks for fixing the (or) element (s) forming a clip; - The clip element (s) is (are) fixed (s) on the support part by complementary elastic locking means; - The clip element (s) is (are) fixed (s) on the support part by riveting.
D'autres caractéristiques et avantages de l'invention ressortiront encore la description qui suit, qui est purement illustrative et non limitative qui doit être lue en regard des dessins annexés sur lesquels - la figure 1, déjà discutée, est une représentation schématique d'une machine électrique conforme à un état de la technique connu ; - la figure 2 est une vue de côté de la figure 1 ; - la figure est une représentation schématique similaire à celle de la figure 1 illustrant mode de réalisation possible pour l'invention ; - les figures 4a à 4c illustrent différentes configurations crochets pour les extrémités d'une branche d'un élément formant agrafe ; - la figure 5 est une demi vue en coupe illustrant autre mode de réalisation possible pour l'invention. Other characteristics and advantages of the invention will emerge from the description which follows, which is purely illustrative and not limiting, which must be read with reference to the appended drawings in which - FIG. 1, already discussed, is a schematic representation of a electric machine according to a known state of the art; - Figure 2 is a side view of Figure 1; - The figure is a schematic representation similar to that of Figure 1 illustrating possible embodiment for the invention; - Figures 4a to 4c illustrate different hook configurations for the ends of a branch of a staple element; - Figure 5 is a half sectional view illustrating another possible embodiment for the invention.
la figure 3, on a gardé les mêmes références que sur les figures 1 et 2 pour culasse 1, le support 2 et le palier arrière 3. in FIG. 3, the same references have been kept as in FIGS. 1 and 2 for cylinder head 1, the support 2 and the rear bearing 3.
Sur la machine conforme à un mode de réalisation de l'invention qui est illustrée sur cette figure, la fixation du palier arriere 3 s'effectue au moyen d'un élément 5 formant agrafe qui se fixe à extrémité sur le support et qui à son autre extrémité est passé sur le palier arrière 3 pour exercer celui-ci, par appui sur sa zone centrale, un effort élastique axial plaquant ledit palier sur la culasse 1. On the machine according to an embodiment of the invention which is illustrated in this figure, the rear bearing 3 is fixed by means of a clip-forming element 5 which is fixed at the end to the support and which at its other end is passed over the rear bearing 3 to exert the latter, by pressing on its central zone, an axial elastic force pressing said bearing on the cylinder head 1.
L'élément 5 formant agrafe peut être de différents types : ressort à lame, corde à piano, ressort de torsion... The element 5 forming a clip can be of different types: leaf spring, piano cord, torsion spring ...
L'élément 5 formant agrafe peut être fixé par crochetage sur le support 2. The element 5 forming a staple can be fixed by hooking on the support 2.
Le support 2 présente à cet effet, dans sa partie formant palier de fixation, des lumières 6 recevant les extrémités en crochets de l'élément 5 formant agrafe. The support 2 has for this purpose, in its part forming a fixing bearing, slots 6 receiving the hooked ends of the element 5 forming a clip.
L'élément 5 formant agrafe peut également être fixé sur le support 2 autrement que par crochetage et notamment par verrouillage élastique ou rivetage. Ainsi que l'illustrent les figures 4a ' 4c, les crochets qui terminent l'élément 5 formant agrafe peuvent être de différents types. Ils peuvent être pliés pour former des retours simples (figure 4a) ou en S (figure 4b). Ils peuvent être découpés dans des portions plates terminant les branches de l'élément 5 (figure 4c). The element 5 forming a staple can also be fixed on the support 2 other than by hooking and in particular by elastic locking or riveting. As illustrated in FIGS. 4a '4c, the hooks which end the element 5 forming a staple can be of different types. They can be folded to form simple returns (Figure 4a) or S-shaped (Figure 4b). They can be cut into flat portions ending the branches of the element 5 (Figure 4c).
Par ailleurs, l'élément 5 formant agrafe peut avantageusement être utilisé pour l'indexation du palier arrière 3 rapport au support 2 et à la culasse 1. Le palier arrière 3 comporte à effet sur sa surface externe une contre-forme dans laquelle est reçu l'élément 5 formant agrafe. La culasse 1 est quant à elle indexée par rapport au support 2 par des moyens connus en soi, tel qu'une crevée, une découpe, etc.. Furthermore, the element 5 forming a clip can advantageously be used for indexing the rear bearing 3 relative to the support 2 and to the cylinder head 1. The rear bearing 3 has in effect on its external surface a counterform in which is received the element 5 forming a clip. The cylinder head 1 is in turn indexed relative to the support 2 by means known per se, such as a puncture, a cutout, etc.
Bien entendu, d'autres modes de réalisation que ceux qui ont été décrits et qui sont représentés sur les figures 3 et 4a à 4c sont envisageables. Of course, other embodiments than those which have been described and which are represented in FIGS. 3 and 4a to 4c can be envisaged.
Notamment, l'élément 5 peut avoir plus de deux branches et être par exemple constitué de quatre branches réparties en croix. In particular, the element 5 can have more than two branches and for example consist of four branches distributed in a cross.
II peut en outre être remplacé, ainsi que l'illustre la figure 5, par plusieurs agrafes 7 réparties autour du stator de la machine de façon à venir s'appuyer sur une zone annulaire de la surface externe du palier. Les extrémités d'appui de ces agrafes 7 exercent sur ledit palier arrière un effort équilibré parallèle à l'axe de la machine électrique. It can also be replaced, as illustrated in FIG. 5, by several clips 7 distributed around the stator of the machine so as to come to bear on an annular zone of the external surface of the bearing. The bearing ends of these clips 7 exert on said rear bearing a balanced force parallel to the axis of the electric machine.
Par exemple, il est ménagé sur palier arrière des zones de crochetage qui comportent des reliefs des crevées permettant de positionner des crochets terminant les agrafes 7 à leurs extrémités. For example, hooking zones are provided on the rear landing which include reliefs in the punctures making it possible to position hooks ending the staples 7 at their ends.
Comme on l'aura compris, les structures qui viennent d'être décrites présentent de nombreux avantages. As will be understood, the structures which have just been described have numerous advantages.
La fixation centrale de l'assemblage permet une répartition parfaite des efforts de contact, assurant l'étanchéité sans faire intervenir de pièce supplémentaire (joints, chicanes...). The central fixing of the assembly allows a perfect distribution of the contact forces, ensuring the tightness without involving additional parts (seals, baffles ...).
Le palier arrière est d'une structure simplifiée du fait de la suppression des oreilles . En particulier, il est possible d'utiliser une tôle de moindre épaisseur. En effet, dans les structures de l'état de la technique, l'épaisseur est dimensionnée par la tenue des oreilles. Egalement, la fixation proposée permet de supprimer les pliages sur le palier arrière et des chutes de matières moins importantes. The rear landing is of a simplified structure due to the removal of the ears. In particular, it is possible to use a sheet of thinner thickness. Indeed, in the structures of the prior art, the thickness is dimensioned by the holding of the ears. Also, the proposed fixing makes it possible to eliminate the bends on the rear bearing and less material falls.
Egalement, la suppression des tirants donc du taraudage dans le support simplifie la réalisation de la structure. En particulier, l'étape d'usinage est supprimée, les lumières de crochetage étant obtenues par moulage avec le support brut. Also, the elimination of the tie rods therefore of the internal thread in the support simplifies the production of the structure. In particular, the machining step is eliminated, the picking slots being obtained by molding with the raw support.
En outre, les opérations de montage sont réduites : on remplace deux vissages par un crochetage (verrouillage élastique, rivetage) lors de l'assemblage. In addition, assembly operations are reduced: two screw connections are replaced by a hooking (elastic locking, riveting) during assembly.
Par conséquent, les coûts et les temps montage sont réduits. Consequently, assembly costs and times are reduced.
La structure présente également l'avantage d'être d'un démontage facile. The structure also has the advantage of being easy to dismantle.
Son encombrement diamétral se trouve réduit sans que la structure ne soit pour autant allongée. Its diametrical size is reduced without the structure being lengthened.
La structure proposée est particulièrement avantageuse dans le cas d'un alternateur ou d'un alterno-démarreur de véhicule automobileThe proposed structure is particularly advantageous in the case of an alternator or an alternator-starter of a motor vehicle
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9916528A FR2803130B1 (en) | 1999-12-27 | 1999-12-27 | IMPROVEMENTS IN FIXING A REAR BEARING OF AN ELECTRIC MOTOR VEHICLE MACHINE, SUCH AS A STARTER OR ALTERNOMETER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9916528A FR2803130B1 (en) | 1999-12-27 | 1999-12-27 | IMPROVEMENTS IN FIXING A REAR BEARING OF AN ELECTRIC MOTOR VEHICLE MACHINE, SUCH AS A STARTER OR ALTERNOMETER |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2803130A1 true FR2803130A1 (en) | 2001-06-29 |
| FR2803130B1 FR2803130B1 (en) | 2006-05-05 |
Family
ID=9553869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9916528A Expired - Fee Related FR2803130B1 (en) | 1999-12-27 | 1999-12-27 | IMPROVEMENTS IN FIXING A REAR BEARING OF AN ELECTRIC MOTOR VEHICLE MACHINE, SUCH AS A STARTER OR ALTERNOMETER |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2803130B1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2501526A (en) * | 1944-05-05 | 1950-03-21 | Bendix Aviat Corp | Cover cap fastening means |
| DE1230123B (en) * | 1962-06-12 | 1966-12-08 | Philips Nv | Small electric machine |
| FR1567211A (en) * | 1968-02-27 | 1969-05-16 | ||
| GB1325384A (en) * | 1970-06-17 | 1973-08-01 | Lucas Joseph Australia Pty | Electric starter motors for starting motor vehicle engines |
| DE2440050A1 (en) * | 1974-08-21 | 1976-03-04 | Bosch Gmbh Robert | Casing for small motors - has can-shaped part and cover for its open end, resting on can-shaped part butt end surface |
| DE2557391A1 (en) * | 1975-12-19 | 1977-06-30 | Licentia Gmbh | Endplate fastening for small electric motor - has deformable metal strip attached to stator and received in notched location in endplate |
-
1999
- 1999-12-27 FR FR9916528A patent/FR2803130B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2501526A (en) * | 1944-05-05 | 1950-03-21 | Bendix Aviat Corp | Cover cap fastening means |
| DE1230123B (en) * | 1962-06-12 | 1966-12-08 | Philips Nv | Small electric machine |
| FR1567211A (en) * | 1968-02-27 | 1969-05-16 | ||
| GB1325384A (en) * | 1970-06-17 | 1973-08-01 | Lucas Joseph Australia Pty | Electric starter motors for starting motor vehicle engines |
| DE2440050A1 (en) * | 1974-08-21 | 1976-03-04 | Bosch Gmbh Robert | Casing for small motors - has can-shaped part and cover for its open end, resting on can-shaped part butt end surface |
| DE2557391A1 (en) * | 1975-12-19 | 1977-06-30 | Licentia Gmbh | Endplate fastening for small electric motor - has deformable metal strip attached to stator and received in notched location in endplate |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2803130B1 (en) | 2006-05-05 |
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