FR2822904A3 - Start device for turning an internal combustion engine, comprises a second seal which is arranged within bearing housing, before the first seal - Google Patents

Start device for turning an internal combustion engine, comprises a second seal which is arranged within bearing housing, before the first seal Download PDF

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Publication number
FR2822904A3
FR2822904A3 FR0204128A FR0204128A FR2822904A3 FR 2822904 A3 FR2822904 A3 FR 2822904A3 FR 0204128 A FR0204128 A FR 0204128A FR 0204128 A FR0204128 A FR 0204128A FR 2822904 A3 FR2822904 A3 FR 2822904A3
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France
Prior art keywords
bearing
seal
sealing means
housing
bearing housing
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Granted
Application number
FR0204128A
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French (fr)
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FR2822904B3 (en
Inventor
Walter Ruehle
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.)
Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of FR2822904A3 publication Critical patent/FR2822904A3/en
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Publication of FR2822904B3 publication Critical patent/FR2822904B3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • F16C33/7809—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for needle roller bearings
    • 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
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • 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
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • 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
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring
    • 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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7896—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members with two or more discrete sealings arranged in series
    • 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
    • F16C2360/00—Engines or pumps
    • F16C2360/22—Internal combustion engines
    • 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
    • F16C2380/27—Motor coupled with a gear, e.g. worm gears

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing Of Bearings (AREA)

Abstract

The start device comprises a second seal (61) which is arranged within the bearing housing (40), before the first seal (49). One or two additional seals (52,64) are arranged on the side of the bearing (19) which faces away from the housing opening (31).

Description

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Etat de la technique
La présente invention concerne un dispositif de démarrage pour lancer un moteur à combustion interne comprenant un arbre de sortie monté à rotation dans une partie de boîtier, par l'intermédiaire d'un palier, ayant au moins un corps de palier et un boîtier de palier, le palier étant précédé en direction de l'orifice de sortie du boîtier d'au moins deux moyens d'étanchéité, et le premier moyen d'étanchéité étant fixé dans le boîtier de palier. State of the art
The present invention relates to a starting device for starting an internal combustion engine comprising an output shaft rotatably mounted in a housing part, via a bearing, having at least one bearing body and a bearing housing , the bearing being preceded in the direction of the outlet orifice of the housing by at least two sealing means, and the first sealing means being fixed in the bearing housing.

Selon l'état de la technique, on connaît des dispositifs de démarrage pour lancer les moteurs à combustion interne comportant un arbre d'entraînement muni d'un pignon, l'arbre étant logé dans une partie de boîtier par l'intermédiaire d'un palier. Comme palier, on utilise des paliers à roulement à aiguilles dont les organes de roulement circulent directement sur la surface traitée de l'arbre de sortie. A l'intérieur du boîtier du palier à roulement à aiguilles, de part et d'autre des organes de roulement, il est prévu un joint muni d'une lèvre d'étanchéité. Dans la direction axiale, entre le pignon et le palier à roulement à aiguille, il est prévu un autre joint radial, distinct, pour améliorer l'étanchéité.  According to the state of the art, starting devices are known for launching internal combustion engines comprising a drive shaft provided with a pinion, the shaft being housed in a housing part by means of a bearing. As a bearing, needle roller bearings are used, the rolling members of which run directly over the treated surface of the output shaft. Inside the housing of the needle roller bearing, on either side of the rolling members, there is a seal provided with a sealing lip. In the axial direction, between the pinion and the needle roller bearing, another separate radial seal is provided to improve the seal.

L'inconvénient de ce montage est qu'il est relativement compliqué pour réaliser l'étanchéité à l'aide de deux joints entre les organes de roulement et le pignon. Un autre inconvénient est que la résistance qui s'oppose à la sortie du lubrifiant placé dans le palier à aiguille, est relativement faible si bien qu'il est difficile de retenir le lubrifiant dans le palier à aiguille.  The disadvantage of this assembly is that it is relatively complicated to make the seal using two seals between the rolling members and the pinion. Another disadvantage is that the resistance which opposes the exit of the lubricant placed in the needle bearing, is relatively low so that it is difficult to retain the lubricant in the needle bearing.

Avantages de l'invention
La présente invention a pour but de remédier à ces inconvénients et concerne à cet effet un dispositif de démarrage du type défini ci-dessus, caractérisé en ce que le second moyen d'étanchéité au moins unique est prévu à l'intérieur du boîtier de palier devant le premier moyen d'étanchéité. Advantages of the invention
The object of the present invention is to remedy these drawbacks and to this end relates to a starting device of the type defined above, characterized in that the at least second second sealing means is provided inside the bearing housing in front of the first sealing means.

La solution selon l'invention permet de diminuer le travail de montage et ainsi, le temps nécessaire au montage. De plus, la distance entre les deux moyens d'étanchéité à l'intérieur du palier est fortement diminuée si bien que la résistance qui s'oppose à la sortie de l'agent lubrifiant placé dans le palier est significativement plus grande que dans l'arbre antérieur et ainsi, on garantit une plus longue durée de graissage grâce à la retenue plus longue du lubrifiant dans le palier. Un autre avantage est que le perçage recevant le palier, peut avoir une forme cylin-  The solution according to the invention makes it possible to reduce the assembly work and thus the time required for assembly. In addition, the distance between the two sealing means inside the bearing is greatly reduced so that the resistance which opposes the exit of the lubricating agent placed in the bearing is significantly greater than in the anterior shaft and thus, a longer lubrication time is guaranteed thanks to the longer retention of the lubricant in the bearing. Another advantage is that the hole receiving the bearing can have a cylindrical shape.

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drique, ce qui en simplifie l'usinage. Enfin, la construction compacte du dispositif de joint dans le palier raccourcit la longueur par rapport à l'état de la technique.  which simplifies machining. Finally, the compact construction of the seal device in the bearing shortens the length compared to the prior art.

Pour que le palier présente également un meilleur effet d'étanchéité vis-à-vis de l'intérieur du boîtier, il est prévu un ou deux autres joints d'étanchéité du côté du palier à l'opposé de l'ouverture du boîtier. Pour simplifier les moyens de montage, il est prévu d'installer au moins un autre joint du côté opposé à l'ouverture du boîtier à l'intérieur du boîtier du palier. Pour simplifier la fabrication du palier, il est en outre prévu de réaliser les joints directement voisins en une seule pièce, ce qui simplifie le travail de montage.  So that the bearing also has a better sealing effect with respect to the interior of the housing, one or two other seals are provided on the side of the bearing opposite the opening of the housing. To simplify the mounting means, provision is made to install at least one other seal on the side opposite to the opening of the housing inside the bearing housing. To simplify the manufacture of the bearing, it is further provided to make the directly adjacent seals in one piece, which simplifies the assembly work.

Dessins
La présente invention sera décrite ci-après de manière plus détaillée, à l'aide des dessins annexés dans lesquels : - la figure 1 est un détail du dispositif de démarrage selon l'invention au niveau du palier, selon un premier exemple de réalisation,

Figure img00020001

- la figure 2 montre un second exemple de réalisation, - la figure 3 montre un troisième exemple de réalisation, et - la figure 4 montre un détail d'un dispositif de démarrage selon l'état de la technique. drawings
The present invention will be described below in more detail, with the aid of the appended drawings in which: FIG. 1 is a detail of the starting device according to the invention at the level of the bearing, according to a first embodiment example,
Figure img00020001

- Figure 2 shows a second embodiment, - Figure 3 shows a third embodiment, and - Figure 4 shows a detail of a starting device according to the prior art.

Description des exemples de réalisation
La figure 4 montre un détail d'un dispositif de démarrage selon l'état de la technique. Le dispositif de démarrage comporte une partie de boîtier 13 appelé généralement palier d'entraînement. La partie de boîtier 13 est munie d'un orifice traversant 16 recevant un arbre d'entraînement 22 de manière rotative équidistante par l'intermédiaire d'un palier 19. L'arbre d'entraînement ou arbre de sortie 22 porte à une extrémité 25 une pièce de transmission de couple 28 qui est généralement constituée par un pignon. Cette pièce de transmission de couple 28 sert à transmettre un couple par l'intermédiaire d'un moteur de démarreur non représenté mais habituel à un vilebrequin non représenté par un moteur à combustion interne. Description of the exemplary embodiments
Figure 4 shows a detail of a starting device according to the state of the art. The starting device comprises a housing part 13 generally called a drive bearing. The housing part 13 is provided with a through hole 16 receiving a drive shaft 22 rotatably equidistant via a bearing 19. The drive shaft or output shaft 22 carries at one end 25 a torque transmission part 28 which generally consists of a pinion. This torque transmission part 28 is used to transmit a torque via a starter motor not shown but usual to a crankshaft not represented by an internal combustion engine.

L'arbre de sortie 22 est entouré par le palier 19 et est soutenu par celui-ci dans la partie de boîtier 13. La partie de boîtier 13 comporte un orifice 31 à son extrémité correspondant à l'extrémité 25 de l'arbre d'entraînement 22 ; dans cet orifice 31, est pressé un joint d'étanchéité radial 34 d'arbre qui assure à un premier niveau, l'étanchéité de l'intérieur de la partie de boîtier 13.  The output shaft 22 is surrounded by the bearing 19 and is supported by the latter in the housing part 13. The housing part 13 has an orifice 31 at its end corresponding to the end 25 of the shaft drive 22; in this orifice 31, a radial gasket 34 of the shaft is pressed which, at a first level, seals the interior of the housing part 13.

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Le palier 19, selon l'état de la technique, est un palier à roulement à aiguilles 37 dont la structure est la suivante : le palier 19 ou le palier à roulement à aiguilles 37 comporte un boîtier de palier 40, de forme essentiellement cylindrique annulaire, s'étendant dans la direction axiale de l'arbre de sortie 22. Le boîtier de palier 40 comporte deux extrémités axiales au niveau desquelles le boîtier 40 est déformé pour constituer une collerette 46 en forme d'anneau cylindrique, faisant corps avec le boîtier 40. A côté de la collerette 46, dirigée vers l'intérieur du palier, il y a un premier moyen d'étanchéité 49 et un second moyen d'étanchéité 52.  The bearing 19, according to the prior art, is a needle roller bearing 37 whose structure is as follows: the bearing 19 or the needle roller bearing 37 comprises a bearing housing 40, of essentially cylindrical annular shape , extending in the axial direction of the output shaft 22. The bearing housing 40 has two axial ends at the level of which the housing 40 is deformed to form a flange 46 in the form of a cylindrical ring, integral with the housing 40. Next to the collar 46, directed towards the inside of the bearing, there is a first sealing means 49 and a second sealing means 52.

Entre les deux moyens d'étanchéité 49,52, se trouve une pièce appelée cage d'organes de roulement 55 ; dans des logements non représentés, la cage reçoit les différents organes de roulement 58 répartis à la périphérie de l'arbre de sortie 22. Between the two sealing means 49, 52, there is a part called a cage of rolling members 55; in housings not shown, the cage receives the various rolling members 58 distributed around the periphery of the output shaft 22.

La figure 1 montre un premier exemple de réalisation selon l'invention. Le palier 10 comporte comme dans l'exemple de la figure 4, un boîtier de palier 40 avec deux collerettes axiales 46. Les parties de ce palier 19 sont des organes de roulement 58 répartis à la périphérie de l'arbre de sortie 22. Ces organes de roulement sont maintenus en place dans le boîtier de palier 40 par l'intermédiaire de la cage de roulement 55. Comme dans l'état de la technique selon la figure 4, dans la direction axiale, en direction de l'orifice 31 de la partie de boîtier se trouve le premier moyen d'étanchéité 49 et à une très courte distance de celui-ci, au moins un second moyen d'étanchéité 61.  Figure 1 shows a first embodiment of the invention. The bearing 10 comprises, as in the example of FIG. 4, a bearing housing 40 with two axial flanges 46. The parts of this bearing 19 are rolling members 58 distributed at the periphery of the output shaft 22. These rolling elements are held in place in the bearing housing 40 by means of the rolling cage 55. As in the prior art according to FIG. 4, in the axial direction, in the direction of the orifice 31 of the housing part is the first sealing means 49 and at a very short distance from it, at least a second sealing means 61.

Selon une variante de l'exemple de réalisation de la figure 1, dans l'exemple de la figure 2, le côté du palier 19, à l'opposé de l'orifice 31 du boîtier, entre la cage 55 recevant les organes de roulement et la collerette 46, à côté de l'autre moyen d'étanchéité (joint) 52, on a prévu au moins un autre moyen d'étanchéité (joint) 64.  According to a variant of the embodiment of Figure 1, in the example of Figure 2, the side of the bearing 19, opposite the orifice 31 of the housing, between the cage 55 receiving the rolling members and the flange 46, next to the other sealing means (seal) 52, at least one other sealing means (seal) 64 is provided.

Dans l'exemple de réalisation de la figure 3, le premier et le second moyen d'étanchéité 49,61 sont réalisés en une seule pièce. De la même manière ou en variante, les autres moyens d'étanchéité 52,64 peuvent être réalisés en une seule pièce.  In the embodiment of Figure 3, the first and second sealing means 49,61 are made in one piece. In the same way or as a variant, the other sealing means 52, 64 can be made in one piece.

La présente invention n'est pas limitée à l'utilisation d'organes de roulement 65 sous la forme de corps de roulement 58. Les corps de palier 65 peuvent également être réalisés comme le montre la figure 3, sous la forme d'anneaux de palier lisses 67. The present invention is not limited to the use of rolling bodies 65 in the form of rolling bodies 58. The bearing bodies 65 can also be produced as shown in FIG. 3, in the form of rings of plain bearings 67.

Claims (1)

REVENDICATIONS 1 ) Dispositif de démarrage pour lancer un moteur à combustion interne comprenant un arbre de sortie (22) monté à rotation dans une partie de boîtier (13), par l'intermédiaire d'un palier (19), ayant au moins un corps de palier (65) et un boîtier de palier (40), le palier (19) étant précédé en direction de l'orifice de sortie du boîtier (31) d'au moins deux moyens d'étanchéité (49, 61), et le premier moyen d'étanchéité (49) étant fixé dans le boîtier de palier (40), caractérisé en ce que le second moyen d'étanchéité (61) au moins unique est prévu à l'intérieur du boîtier de palier (40) devant le premier moyen d'étanchéité (49).  1) Starting device for starting an internal combustion engine comprising an output shaft (22) rotatably mounted in a housing part (13), via a bearing (19), having at least one body bearing (65) and a bearing housing (40), the bearing (19) being preceded in the direction of the outlet orifice of the housing (31) by at least two sealing means (49, 61), and the first sealing means (49) being fixed in the bearing housing (40), characterized in that the at least second second sealing means (61) is provided inside the bearing housing (40) in front the first sealing means (49). 20) Dispositif de démarrage selon la revendication 1, caractérisé en ce que  20) Starting device according to claim 1, characterized in that
Figure img00040001
Figure img00040001
 sur le côté du palier (19), à l'opposé de l'orifice de boîtier (31), il est prévu un ou deux autres moyens d'étanchéité (52,64).  on the side of the bearing (19), opposite the housing orifice (31), one or two other sealing means (52,64) are provided. 3 ) Dispositif de démarrage selon la revendication 2, caractérisé en ce qu' au moins un autre moyen d'étanchéité (52,64) est prévu à l'intérieur du boîtier de palier (40).  3) Starting device according to claim 2, characterized in that at least one other sealing means (52,64) is provided inside the bearing housing (40). 4 ) Dispositif de démarrage selon la revendication 1, caractérisé en ce que le premier moyen d'étanchéité (49) et le second moyen d'étanchéité (61) et/ou les deux autres moyens d'étanchéité (52,64) sont réalisés en une seule pièce.  4) Starting device according to claim 1, characterized in that the first sealing means (49) and the second sealing means (61) and / or the other two sealing means (52,64) are produced in one piece. 5 ) Dispositif de démarrage selon l'une des revendications précédentes, caractérisé en ce que le corps de palier (65) est un organe de roulement (58) ou un organe de palier lisse (67). 5) Starting device according to one of the preceding claims, characterized in that the bearing body (65) is a rolling member (58) or a plain bearing member (67).
FR0204128A 2001-04-03 2002-04-03 STARTING DEVICE Expired - Lifetime FR2822904B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20105802U DE20105802U1 (en) 2001-04-03 2001-04-03 starter

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FR2822904A3 true FR2822904A3 (en) 2002-10-04
FR2822904B3 FR2822904B3 (en) 2003-03-28

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006053716A1 (en) * 2006-11-15 2008-05-21 Schaeffler Kg Rolling bearing unit and gas control flap assembly with rolling bearing unit
DE112013006755A5 (en) * 2013-03-01 2015-11-12 Schaeffler Technologies AG & Co. KG Bearing arrangement for a WeIle with a double-acting seal
EP2949974A1 (en) * 2014-05-29 2015-12-02 Borgwarner Emissions Systems Spain, S.L.U. Butterfly valve

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DE20105802U1 (en) 2002-08-22
FR2822904B3 (en) 2003-03-28
ITMI20020649A1 (en) 2003-09-29
ITMI20020649A0 (en) 2002-03-28

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