WO2019207223A1 - Method for mounting a seal on a gearbox shaft - Google Patents
Method for mounting a seal on a gearbox shaft Download PDFInfo
- Publication number
- WO2019207223A1 WO2019207223A1 PCT/FR2019/050629 FR2019050629W WO2019207223A1 WO 2019207223 A1 WO2019207223 A1 WO 2019207223A1 FR 2019050629 W FR2019050629 W FR 2019050629W WO 2019207223 A1 WO2019207223 A1 WO 2019207223A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- press
- sealing
- protection
- mounting
- Prior art date
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Classifications
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/08—Machines for placing washers, circlips, or the like on bolts or other members
- B23P19/084—Machines for placing washers, circlips, or the like on bolts or other members for placing resilient or flexible rings, e.g. O-rings, circlips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0028—Tools for removing or installing seals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/0035—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for motor-vehicles
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- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3436—Pressing means
Definitions
- the invention relates to the installation of seals in a motor vehicle and more particularly to the seals which, during their assembly, may be damaged by sharp edges on which the seals slide.
- the gearboxes of motor vehicles comprise shafts transmitting to a component of the motor vehicle or receiving from the latter a rotational movement.
- the gearboxes comprise a housing, relative to which the shafts are rotating, usually filled with oil to meet the proper operation of said gearbox.
- a seal is arranged between the housing and each shaft. The seal is mounted on the gearbox after mounting the shaft in the housing. The seal is fitted on the shaft.
- an end of the shaft coupled to the component of the motor vehicle comprises splines. These grooves comprise sharp edges which, when fitting the seal on the shaft, may damage the seal.
- the protective device also called ogive, being intended, when fitting the seal of sealing, sliding on the shaft, between the seal and the shaft, protecting the seal edges sharp.
- the protection device and the seal are driven by a press bearing directly on the seal, around the protection device.
- the protective device is locked in translation, by increasing the diameter of the shaft, before the end of the fitting of the seal, so that the latter comes into contact with the shaft in its final position.
- Such a protective device must, however, at the end of operation, be removed manually from the tree by an operator.
- DE102014016722A1 discloses such a method of fitting, on a shaft, a seal pre-mounted on a protective device.
- the protection device comprises a radial advance extending towards the press and configured to cooperate with a radial advance of the press extending towards the protection device. After locking the protection device in translation, the radial advance of the press passes beyond the radial advance of the protection device, on the side of the seal, the press continuing to press the seal until at its final position. The radial advances coming into contact with each other during the withdrawal of the press, allow the withdrawal of the protective device of the tree.
- the objective is to propose an alternative technique to the removal of the protective device in concomitance with the withdrawal of the press.
- a method of mounting a seal on a cylindrical piece comprising at least one sharp edge likely to damage the seal, the seal of sealing being pre-mounted on a protection device, the seal and the protective device having a general annular shape complementary to the shape of the workpiece comprising: a primary fitting step, through a press, the protective device and the seal on the workpiece, by sliding the protective device, in a direction of depression, on the at least one sharp edge; the protective device being disposed between the workpiece and the seal; a step of secondary fitting, through the press, the seal on the workpiece; the protection device being locked in translation, in the direction of depression, against a blocking wall of the part; gasket sliding sealing, in the direction of depression, on the protection device and then on the part, beyond the at least one sharp edge; a step of connecting the press and the protection device; a step of removing the press, in a direction of withdrawal opposite to the driving direction, the press removing with it the protective device; the connecting step being
- Such a method of mounting a seal can effectively protect the seal during its mounting on the part, to remove manual steps to save time and quality.
- the connecting step the helical connection between the press and the protection device is effected by cooperation between a thread of the protective device and a tapping of the press; the threading and the tapping allowing a solidarization resistant without risk of damaging the press or the protective device; the linking step is performed by rotating, in the direction of connection, an inner portion of the press, an outer portion of the press being locked in rotation, in the direction of connection, so as not to damage the seal sealing by friction with the outer part; during the linking step, a recess of the press blocks, by abutment against a shoulder of the protection device, the translational protection device in the withdrawal direction so as to define a maximum position of the protective device in the press ; the mounting method comprises, after the step of removing, a step of separating the device for protecting the press made by rotating the press relative to the protection device, in a direction opposite to the direction of connection, eliminating the helical connection between the press and the device protection so as to allow the realization, once again, of
- the uncoupling step is performed by rotation, in said direction opposite to the connecting direction, of the inner part of the press, the outer portion of the press being locked in rotation in said opposite direction to the connection direction; the outer part protecting the individuals positioned close to the press during the rotation of the inner part;
- the at least one sharp edge on which the protection device slides extends in a direction defined by the driving direction so as to optimize the torque transmitted between the component and the component with which the piece is coupled;
- the piece comprises several sharp edges distributed around the entire periphery of said piece and the protective device extends around the entire periphery of said piece.
- a method of assembling a gearbox comprising: a housing, a shaft having an end provided with at least one sharp edge, said end of the gearbox; shaft protruding from the housing, and a seal disposed between the housing and the shaft, the method of assembling the gearbox comprising a step of fitting the seal on the shaft made according to the mounting method described above.
- an inner lip of the seal is in contact with the shaft, an outer lip the seal is in contact with the housing, a support of the seal is in contact with the press, the seal having, in cross section, a generally U-shape.
- the U-shaped allowing to marry to the maximum the housing and the shaft movable relative to each other.
- FIGS. 1 is a schematic perspective view of a motor vehicle comprising a motor and a gearbox, the gearbox comprising a housing, a shaft and a seal disposed between the housing and the shaft;
- Figure 2 is a schematic sectional view of the seal pre-mounted on a protection device;
- FIGS. 1 is a schematic perspective view of a motor vehicle comprising a motor and a gearbox, the gearbox comprising a housing, a shaft and a seal disposed between the housing and the shaft;
- Figure 2 is a schematic sectional view of the seal pre-mounted on a protection device;
- FIG. 3 and 4 are diagrammatic views in section of a step of primary fitting, by means of a press, of the seal on the shaft, by convention the shaft not being shown in section;
- Figure 5 is a schematic sectional view of a step of secondary fitting, through the press, the seal on the shaft, by convention the shaft is not shown in section;
- Figure 6 is a schematic sectional view of a connecting step of the protection device and the press, by convention the shaft is not shown in section;
- Figure 7 is a schematic sectional view of a step of removing the press and the protection device, by convention the shaft is not shown in section;
- Figure 8 is a schematic representation of various steps of a method of mounting the seal on the shaft.
- a vehicle 1 automobile comprising a motor 100 and a gearbox 200 integral with the motor 100.
- the gearbox 200 comprises: a housing 210, a shaft 220 having an end 221 projecting from the housing 210, said end 221 cooperating with the motor 100 and a seal 230 disposed between the housing 210 and the housing 210; tree 220.
- the seal 230 avoids the loss of oil in the housing 210 for the proper operation of the gearbox 200.
- Said end 221 of the shaft 220 projecting from the housing 210 comprises at least one groove 222 for transmitting a rotational movement produced by the motor 100.
- the at least one groove 222 comprises at least one sharp edge.
- the grooves 220 are distributed over the entire periphery of the shaft 220.
- a press 300 engages the seal 230 on the shaft 220 , by the end 221 of the shaft 220, projecting from the housing 210, comprising the at least one sharp edge.
- the seal 230 before mounting the seal 230 on the shaft 220, so as not to damage the seal 230 when mounting the latter, the seal 230 is pre-mounted on a protective device 400, also called ogive, as shown in Figure 2.
- the seal 230 comprises an inner lip 231, an outer lip 232 and a support 233 connecting the inner lip 231 and the outer lip 232.
- the seal 230 has, in cross section, a generally U-shape.
- the inner lip 231 is intended to be in contact with the shaft 220.
- the inner lip 231 is in contact with a skirt 410 of the protection device 400 when the seal 230 is pre-mounted on the device 400 protection.
- the external lip 232 is intended to be in contact with the housing 210.
- the support 233 is intended to be in contact with the press 300, during assembly of the seal 230 on the shaft 220.
- the protection device 400 comprises a shoulder 420 blocking the insertion of the seal 230 on the protection device 400 during pre-assembly.
- the protection device 400 comprises a primary helical linkage means 430 intended to cooperate with a secondary helical linkage means 321 of the press 300.
- the shoulder 420 substantially separates the primary helical connecting means 430 and the skirt 410 of the protection device 400.
- the primary helical connecting means 430 is disposed on the skirt 410.
- the primary helical connecting means 430 is a tapping and the secondary helical connecting means 321 is a thread.
- the tapping and threading extend over a limited length, respectively, of the protection device 400 and the press.
- the seal 230 and the protection device 400 and the shaft 220 have forms of revolution.
- the seal 230 and the protective device 400 have an annular shape, complementary to the cylindrical shape of circular section of the shaft 220, so that the seal 230 and the protective device 400 are fitted on the 220.
- the protective device 400 extends over the entire periphery of the shaft 220.
- the shoulder 420 has a substantially annular shape extending outwardly of the protection device 400 and arranged substantially in the middle of the device. 400 of protection.
- the press 300 has a general shape of circular cross section tube.
- the press 300 preferably has an internal diameter substantially equal to the outer diameter of the shaft 220 improving the guiding of the press 300 relative to the shaft 220 during assembly of the seal 230.
- the press 300 comprises: an outer portion 310 intended to be in contact with the support 233 of the seal 230, when mounting the seal 230 on the shaft 220 and an inner portion 320 comprising the secondary helical connecting means 321 and rotatable relative to the outer portion 310.
- the method 1000 for mounting the seal 230 on the shaft 220 is shown schematically in Figure 8 and is illustrated in Figures 3 to 7.
- the mounting method 1000 comprises a step 1001 primary fitting of the seal 230 on the shaft 220, shown in Figures 3 and 4, until the contact with the skirt 410 of the protection device 400 with a wall 223 blocking the shaft 220, the protective device 400 thus abuts against the wall 223 blocking.
- step 1001 of primary fitting the support 233 of the seal 230 is in contact with the external part 310 of the press 300, the latter pushing the seal 230 and the protection device 400 the along the end 221 protruding from the shaft 220, in a direction 2 of depression.
- the skirt 410 of the protective device 400 is disposed between the shaft 220 and the seal 230 protecting the latter against potential damage caused by the sharp edge or edges of the end 221 of the shaft 220.
- the sharp edges are arranged in a direction defined by the direction of penetration 2 corresponding to the direction in which the shaft 220 extends. In different embodiments, the sharp edges are perpendicular, oblique or in different directions with respect to said direction along which the shaft 220 extends.
- the wall 223 blocking the shaft 220 defined on the shaft 220 a diameter greater than the diameter of the end 221 and the diameter of the device 400 of protection.
- the mounting method 1000 comprises a step 1002 of secondary fitting of the seal 230 on the shaft.
- the support 233 of the seal 230 remains in contact with the external portion 310 of the press 300, the latter pushing the seal 230, in the direction of depression 2.
- the protection device 400 is, for its part, locked in translation in the direction of depression so that the seal 230 slides on the protection device 400 to its final position, between the housing 210 and the housing. 220 shaft of the gearbox 200.
- the method 1000 for mounting the sealing gasket 230 comprises a step 1003 for connecting the internal portion 320 of the press 300 and the protection device 400, shown in FIG. 6.
- the inner portion 320 is rotated in a connecting direction 3, so that the primary helical connecting means 430 and the secondary helical connecting means 321 cooperate and create a helical connection solidarisant the inner portion 320 of the press 300 and the protection device 400.
- the protective device 400 is thus moved in a direction of withdrawal 4 opposite to the direction of depressing.
- the outer portion 310 of the press 300 comprises a recess 311, extending towards the inner portion 320 of the press 300, intended to block, by contact between the recess 311 and the shoulder 420 of the protection device 400, the protection device 400 in translation in the direction 4 of withdrawal.
- step 1003 of the connection the outer portion 310 of the press 300, in contact with the seal 230, is immobile in rotation relative to the seal 230.
- the seal 230 is not damaged by friction due to relative movement between the outer portion 310 and the seal 230.
- the press 300 includes only the outer portion 310 provided with the means 321 secondary helical link.
- the outer portion 310 comprises a bearing in contact with the seal 230 of so as not to damage the sealing gasket 230 during the rotation of the outer portion 310 creating the helical connection.
- the assembly method 1000 includes a step 1004 for removing the press 300 and the device 400 for protecting the shaft 220.
- the press 300 is moved in the direction 4 of withdrawal pulling with it the protective device 400 secured to the internal portion 320 of the press 300 through the helical link.
- the method 1000 for mounting the seal comprises a step 1005 of uncoupling the device 400 for protecting the press 300.
- the internal portion 320 of the press is rotated so that the means 430 of primary helical connection and the means 321 secondary helical link deletes the helical connection solidarisant the inner portion 320 of the press 300 and 400 protection device.
- the protection device 400 is thus automatically disconnected from the press 300.
- the internal portion 320 of the press is rotated, during the step 1005 of uncoupling, in a direction opposite to the direction 3 of connection.
- the step 1005 of uncoupling is performed by tearing the 400 protection device.
- the protection device 400 is composed of several parts that can be brought closer so that the protection device 400 is no longer integral with the press 300.
- Such a method of mounting the sealing gasket 230 on the shaft 220 of the gearbox 200 makes it possible to effectively protect the seal 230 during its assembly.
- the press 300 required to implement this mounting method 1000 is simple to design and manufacture.
- the assembly method 1000 also allows, by eliminating manual steps, to save time on the assembly of a vehicle 1 automobile and more particularly a box 200 speeds and to improve quality by avoiding problems. risks of forgetting the realization of manual steps.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- General Details Of Gearings (AREA)
Abstract
The invention relates to a method for mounting a seal (230), pre-mounted on a protection device (400), onto a cylindrical part comprising a sharp edge that risks damaging the seal, the method comprising: – a step, using a press (300), of slip-fitting, onto the part, the seal and the protection device arranged between the part and the seal, by sliding the protection device over the sharp edge; the protection device being then blocked in translation against a blocking wall of the part; the seal sliding on the protection device then on the part; – a step of linking the press and the protection device; – a step of withdrawing the press with the protection device; the linking step being carried out by rotation of the press with respect to the protection device creating a helical link.
Description
PROCEDE DE MONTAGE D’UN JOINT D’ETANCHEITE SUR UN ARBRE DE BOITE DE VITESSES METHOD FOR MOUNTING A SEAL ON A GEARBOX SHAFT
[0001 ] L’invention a trait au montage de joints d’étanchéité dans un véhicule automobile et plus particulièrement aux joints d’étanchéité qui, lors de leur montage, risquent d’être endommagés par des arêtes vives sur lesquelles les joints d’étanchéité glissent. The invention relates to the installation of seals in a motor vehicle and more particularly to the seals which, during their assembly, may be damaged by sharp edges on which the seals slide.
[0002] Les boîtes de vitesses des véhicules automobiles comprennent des arbres transmettant à un composant du véhicule automobile ou recevant de ce dernier un mouvement de rotation. [0003] Les boîtes de vitesses comprennent un carter, par rapport auquel les arbres sont en rotation, généralement rempli d’huile pour satisfaire au bon fonctionnement de ladite boîte de vitesses. Afin d’éviter la perte d’huile et donc une dégradation prématurée de la boîte de vitesses, un joint d’étanchéité est disposé entre le carter et chaque arbre. [0004] Le joint d’étanchéité est monté, sur la boîte de vitesses, après montage de l’arbre dans le carter. Le joint d’étanchéité est emmanché sur l’arbre. [0002] The gearboxes of motor vehicles comprise shafts transmitting to a component of the motor vehicle or receiving from the latter a rotational movement. The gearboxes comprise a housing, relative to which the shafts are rotating, usually filled with oil to meet the proper operation of said gearbox. In order to avoid the loss of oil and therefore premature degradation of the gearbox, a seal is arranged between the housing and each shaft. The seal is mounted on the gearbox after mounting the shaft in the housing. The seal is fitted on the shaft.
[0005] Cependant, afin de transmettre ou recevoir le mouvement de rotation, une extrémité de l’arbre couplée au composant du véhicule automobile comprend des cannelures. Ces cannelures comprennent des arêtes vives qui, lors de l’emmanchement du joint d’étanchéité sur l’arbre, risquent d’endommager le joint d’étanchéité. However, in order to transmit or receive the rotational movement, an end of the shaft coupled to the component of the motor vehicle comprises splines. These grooves comprise sharp edges which, when fitting the seal on the shaft, may damage the seal.
[0006] Il est connu, pour pallier ce problème, de pré-monter le joint d’étanchéité sur un dispositif de protection de forme annulaire, le dispositif de protection, aussi appelé ogive, étant destiné, lors de l’emmanchement du joint d’étanchéité, à glisser sur l’arbre, entre le joint d’étanchéité et l’arbre, protégeant le joint d’étanchéité des arêtes vives. Le dispositif de protection et le joint d’étanchéité sont mus par une presse s’appuyant directement sur le joint d’étanchéité, autour du dispositif de protection. Le dispositif de protection est bloqué en translation, par une augmentation du diamètre de l’arbre, avant la fin de l’emmanchement du joint d’étanchéité, de sorte que ce dernier vienne au contact de l’arbre, dans sa position finale.
[0007] Un tel dispositif de protection doit, cependant, en fin d’opération, être retiré manuellement de l’arbre par un opérateur. It is known, to overcome this problem, to pre-mount the seal on a ring-shaped protective device, the protective device, also called ogive, being intended, when fitting the seal of sealing, sliding on the shaft, between the seal and the shaft, protecting the seal edges sharp. The protection device and the seal are driven by a press bearing directly on the seal, around the protection device. The protective device is locked in translation, by increasing the diameter of the shaft, before the end of the fitting of the seal, so that the latter comes into contact with the shaft in its final position. Such a protective device must, however, at the end of operation, be removed manually from the tree by an operator.
[0008] Le document DE102014016722A1 décrit un tel procédé d’emmanchement, sur un arbre, d’un joint d’étanchéité pré-monté sur un dispositif de protection. Le dispositif de protection comprend une avancée radiale s’étendant vers la presse et configurée pour coopérer avec une avancée radiale de la presse s’étendant vers le dispositif de protection. Après blocage en translation du dispositif de protection, l’avancée radiale de la presse passe au-delà de l’avancée radiale du dispositif de protection, du côté du joint d’étanchéité, la presse continuant à emmancher le joint d’étanchéité jusqu’à sa position finale. Les avancées radiales venant en contact l’une de l’autre, lors du retrait de la presse, permettent le retrait du dispositif de protection de l’arbre. DE102014016722A1 discloses such a method of fitting, on a shaft, a seal pre-mounted on a protective device. The protection device comprises a radial advance extending towards the press and configured to cooperate with a radial advance of the press extending towards the protection device. After locking the protection device in translation, the radial advance of the press passes beyond the radial advance of the protection device, on the side of the seal, the press continuing to press the seal until at its final position. The radial advances coming into contact with each other during the withdrawal of the press, allow the withdrawal of the protective device of the tree.
[0009] En variante, un autre document décrit, à la place des avancées radiales, des aimants permettant également le retrait du dispositif de protection de l’arbre. Alternatively, another document describes, instead of radial advances, magnets also allowing the removal of the protective device of the shaft.
[0010] De tels procédés d’emmanchement du joint d’étanchéité permettent le retrait du dispositif de protection de manière concomitante avec le retrait de la presse. Such methods of fitting the seal enable the removal of the protective device concomitantly with the withdrawal of the press.
[001 1 ] L’objectif est de proposer une technique alternative au retrait du dispositif de protection en concomitance avec le retrait de la presse. [001 1] The objective is to propose an alternative technique to the removal of the protective device in concomitance with the withdrawal of the press.
[0012] A cet effet, il est proposé, en premier lieu, un procédé de montage d’un joint d’étanchéité sur une pièce cylindrique comprenant au moins une arête vive susceptible d’endommager le joint d’étanchéité, le joint d’étanchéité étant pré-monté sur un dispositif de protection, le joint d’étanchéité et le dispositif de protection présentant une forme générale annulaire complémentaire à la forme de la pièce, le procédé de montage comprenant : une étape d’emmanchement primaire, par le biais d’une presse, du dispositif de protection et du joint d’étanchéité sur la pièce, par glissement du dispositif de protection, suivant un sens d’enfoncement, sur la au moins une arête vive ; le dispositif de protection étant disposé entre la pièce et le joint d’étanchéité ; une étape d’emmanchement secondaire, par le biais de la presse, du joint d’étanchéité sur la pièce ; le dispositif de protection étant bloqué en translation, suivant le sens d’enfoncement, contre une paroi de blocage de la pièce ; le joint
d’étanchéité glissant, suivant le sens d’enfoncement, sur le dispositif de protection puis sur la pièce, au-delà de la au moins une arête vive ; une étape de liaison de la presse et du dispositif de protection ; une étape de retrait de la presse, suivant un sens de retrait opposé au sens d’enfoncement, la presse retirant avec elle le dispositif de protection ; l’étape de liaison étant réalisée par rotation de la presse par rapport au dispositif de protection, suivant un sens de liaison, créant une liaison hélicoïdale entre la presse et le dispositif de protection. For this purpose, it is proposed, in the first place, a method of mounting a seal on a cylindrical piece comprising at least one sharp edge likely to damage the seal, the seal of sealing being pre-mounted on a protection device, the seal and the protective device having a general annular shape complementary to the shape of the workpiece, the mounting method comprising: a primary fitting step, through a press, the protective device and the seal on the workpiece, by sliding the protective device, in a direction of depression, on the at least one sharp edge; the protective device being disposed between the workpiece and the seal; a step of secondary fitting, through the press, the seal on the workpiece; the protection device being locked in translation, in the direction of depression, against a blocking wall of the part; gasket sliding sealing, in the direction of depression, on the protection device and then on the part, beyond the at least one sharp edge; a step of connecting the press and the protection device; a step of removing the press, in a direction of withdrawal opposite to the driving direction, the press removing with it the protective device; the connecting step being carried out by rotating the press relative to the protection device, in a direction of connection, creating a helical connection between the press and the protection device.
[0013] Un tel procédé de montage d’un joint d’étanchéité permet de protéger efficacement le joint d’étanchéité lors de son montage sur la pièce, de supprimer des étapes manuelles afin de gagner en temps et en qualité. Such a method of mounting a seal can effectively protect the seal during its mounting on the part, to remove manual steps to save time and quality.
[0014] Diverses caractéristiques supplémentaires peuvent être prévues, seules ou en combinaison : lors de l’étape de liaison, la liaison hélicoïdale entre la presse et le dispositif de protection s’effectue par coopération entre un filetage du dispositif de protection et un taraudage de la presse ; le filetage et le taraudage permettant une solidarisation résistante sans risque d’abîmer la presse ou le dispositif de protection ; l’étape de liaison est réalisée par rotation, suivant le sens de liaison, d’une partie interne de la presse, une partie externe de la presse étant bloquée en rotation, suivant le sens de liaison, de sorte à ne pas endommager le joint d’étanchéité par frottement avec la partie externe ; lors de l’étape de liaison, un renfoncement de la presse bloque, par butée contre un épaulement du dispositif de protection, le dispositif de protection en translation suivant le sens de retrait de sorte à définir une position maximale du dispositif de protection dans la presse ; le procédé de montage comprend, après l’étape de retrait, une étape de désolidarisation du dispositif de protection de la presse réalisée par rotation de la presse par rapport au dispositif de protection, suivant un sens opposé au sens de liaison, supprimant la liaison hélicoïdale entre la presse et le dispositif de
protection de sorte à permettre la réalisation, une nouvelle fois, du procédé de montage du joint d’étanchéité sans recours à une opération manuelle tout en conservant l’intégrité de la presse et du dispositif de protection ; Various additional features may be provided, alone or in combination: during the connecting step, the helical connection between the press and the protection device is effected by cooperation between a thread of the protective device and a tapping of the press; the threading and the tapping allowing a solidarization resistant without risk of damaging the press or the protective device; the linking step is performed by rotating, in the direction of connection, an inner portion of the press, an outer portion of the press being locked in rotation, in the direction of connection, so as not to damage the seal sealing by friction with the outer part; during the linking step, a recess of the press blocks, by abutment against a shoulder of the protection device, the translational protection device in the withdrawal direction so as to define a maximum position of the protective device in the press ; the mounting method comprises, after the step of removing, a step of separating the device for protecting the press made by rotating the press relative to the protection device, in a direction opposite to the direction of connection, eliminating the helical connection between the press and the device protection so as to allow the realization, once again, of the seal mounting method without the use of a manual operation while maintaining the integrity of the press and the protective device;
- l’étape de désolidarisation est réalisée par rotation, suivant ledit sens opposé au sens de liaison, de la partie interne de la presse, la partie externe de la presse étant bloquée en rotation, suivant ledit sens opposé au sens de liaison ; la partie externe protégeant les individus positionnés proches de la presse lors de la rotation de la partie interne ; - The uncoupling step is performed by rotation, in said direction opposite to the connecting direction, of the inner part of the press, the outer portion of the press being locked in rotation in said opposite direction to the connection direction; the outer part protecting the individuals positioned close to the press during the rotation of the inner part;
- lors de l’étape d’emmanchement primaire, la au moins une arête vive sur laquelle glisse le dispositif de protection s’étendent suivant une direction définie par le sens d’enfoncement de sorte à optimiser le couple transmis entre la pièce et le composant avec lequel la pièce est accouplée ; during the primary fitting step, the at least one sharp edge on which the protection device slides extends in a direction defined by the driving direction so as to optimize the torque transmitted between the component and the component with which the piece is coupled;
- lors de l’étape d’emmanchement primaire, la pièce comprend plusieurs arêtes vives réparties sur tout le pourtour de ladite pièce et le dispositif de protection s’étend sur tout le pourtour de ladite pièce. - During the primary fitting step, the piece comprises several sharp edges distributed around the entire periphery of said piece and the protective device extends around the entire periphery of said piece.
[0015] Il est proposé, en second lieu, un procédé d’assemblage d’une boîte de vitesses, la boîte de vitesses comprenant : un carter, un arbre comportant une extrémité munie d’au moins une arête vive, ladite extrémité de l’arbre faisant saillie du carter, et un joint d’étanchéité disposé entre le carter et l’arbre, le procédé d’assemblage de la boîte de vitesses comprenant une étape d’emmanchement du joint d’étanchéité sur l’arbre réalisée suivant le procédé de montage décrit ci-dessus. It is proposed, secondly, a method of assembling a gearbox, the gearbox comprising: a housing, a shaft having an end provided with at least one sharp edge, said end of the gearbox; shaft protruding from the housing, and a seal disposed between the housing and the shaft, the method of assembling the gearbox comprising a step of fitting the seal on the shaft made according to the mounting method described above.
[0016] En variante du procédé d’assemblage de la boîte de vitesses décrit ci- dessus, en fin de l’étape d’emmanchement secondaire : une lèvre interne du joint d’étanchéité est en contact avec l’arbre, une lèvre externe du joint d’étanchéité est en contact avec le carter,
un appui du joint d’étanchéité est en contact avec la presse, le joint d’étanchéité présentant, en section transversale, une forme générale en U. In a variant of the assembly method of the gearbox described above, at the end of the secondary fitting step: an inner lip of the seal is in contact with the shaft, an outer lip the seal is in contact with the housing, a support of the seal is in contact with the press, the seal having, in cross section, a generally U-shape.
[0017] La forme en U permettant d’épouser au maximum le carter et l’arbre mobiles l’un par rapport à l’autre. The U-shaped allowing to marry to the maximum the housing and the shaft movable relative to each other.
[0018] L’invention sera mieux comprise, et d’autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d’exemple illustrant un mode de réalisation de l’invention et dans lesquels : la figure 1 est une vue schématique en perspective d’un véhicule automobile comprenant un moteur et une boîte de vitesses, la boîte de vitesses comportant un carter, un arbre et un joint d’étanchéité disposé entre le carter et l’arbre ; la figure 2 est une vue schématique en coupe du joint d’étanchéité pré-monté sur un dispositif de protection ; les figures 3 et 4 sont des vues schématiques en coupe d’une étape d’emmanchement primaire, par le biais d’une presse, du joint d’étanchéité sur l’arbre, par convention l’arbre n’étant pas représenté en coupe ; la figure 5 est une vue schématique en coupe d’une étape d’emmanchement secondaire, par le biais de la presse, du joint d’étanchéité sur l’arbre, par convention l’arbre n’étant pas représenté en coupe ; la figure 6 est une vue schématique en coupe d’une étape de liaison du dispositif de protection et de la presse, par convention l’arbre n’étant pas représenté en coupe ; la figure 7 est une vue schématique en coupe d’une étape de retrait de la presse et du dispositif de protection, par convention l’arbre n’étant pas représenté en coupe ; la figure 8 est une représentation schématique de différentes étapes d’un procédé de montage du joint d’étanchéité sur l’arbre.
[0019] Sur la figure 1 est représenté un véhicule 1 automobile comprenant un moteur 100 et une boîte 200 de vitesses solidaire du moteur 100. The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the explanatory description which follows with reference to the accompanying drawings given solely by way of example illustrating a embodiment of the invention and in which: Figure 1 is a schematic perspective view of a motor vehicle comprising a motor and a gearbox, the gearbox comprising a housing, a shaft and a seal disposed between the housing and the shaft; Figure 2 is a schematic sectional view of the seal pre-mounted on a protection device; FIGS. 3 and 4 are diagrammatic views in section of a step of primary fitting, by means of a press, of the seal on the shaft, by convention the shaft not being shown in section; ; Figure 5 is a schematic sectional view of a step of secondary fitting, through the press, the seal on the shaft, by convention the shaft is not shown in section; Figure 6 is a schematic sectional view of a connecting step of the protection device and the press, by convention the shaft is not shown in section; Figure 7 is a schematic sectional view of a step of removing the press and the protection device, by convention the shaft is not shown in section; Figure 8 is a schematic representation of various steps of a method of mounting the seal on the shaft. In Figure 1 is shown a vehicle 1 automobile comprising a motor 100 and a gearbox 200 integral with the motor 100.
[0020] La boîte 200 de vitesses comprend : un carter 210, un arbre 220 comportant une extrémité 221 en saillie du carter 210, ladite extrémité 221 coopérant avec le moteur 100 et un joint 230 d’étanchéité disposé entre le carter 210 et l’arbre 220. The gearbox 200 comprises: a housing 210, a shaft 220 having an end 221 projecting from the housing 210, said end 221 cooperating with the motor 100 and a seal 230 disposed between the housing 210 and the housing 210; tree 220.
[0021 ] Le joint 230 d’étanchéité permet d’éviter la perte d’huile présente dans le carter 210 pour le bon fonctionnement de la boîte 200 de vitesses. The seal 230 avoids the loss of oil in the housing 210 for the proper operation of the gearbox 200.
[0022] Ladite extrémité 221 de l’arbre 220 en saillie du carter 210 comprend au moins une cannelure 222 destinée à transmettre un mouvement de rotation produit par le moteur 100. La au moins une cannelure 222 comprend au moins une arête vive. Said end 221 of the shaft 220 projecting from the housing 210 comprises at least one groove 222 for transmitting a rotational movement produced by the motor 100. The at least one groove 222 comprises at least one sharp edge.
[0023] Dans le mode de réalisation représenté, les cannelures 220, et donc les arêtes vives, sont réparties sur tout le pourtour de l’arbre 220. In the embodiment shown, the grooves 220, and therefore the sharp edges, are distributed over the entire periphery of the shaft 220.
[0024] Selon le mode de réalisation illustré, comme on peut le voir sur les figures 3 à 7, dans un procédé 1000 de montage du joint 230 d’étanchéité, une presse 300 emmanche le joint 230 d’étanchéité sur l’arbre 220, par l’extrémité 221 de l’arbre 220, en saillie du carter 210, comprenant la au moins une arête vive. According to the illustrated embodiment, as can be seen in Figures 3 to 7, in a method 1000 for mounting the seal 230, a press 300 engages the seal 230 on the shaft 220 , by the end 221 of the shaft 220, projecting from the housing 210, comprising the at least one sharp edge.
[0025] Ainsi, avant le montage du joint 230 d’étanchéité sur l’arbre 220, afin de ne pas endommager le joint 230 d’étanchéité lors de du montage de ce dernier, le joint 230 d’étanchéité est pré-monté sur un dispositif 400 de protection, aussi appelé ogive, comme illustré sur la figure 2. Thus, before mounting the seal 230 on the shaft 220, so as not to damage the seal 230 when mounting the latter, the seal 230 is pre-mounted on a protective device 400, also called ogive, as shown in Figure 2.
[0026] Dans le mode de réalisation représenté, le joint 230 d’étanchéité comprend une lèvre 231 interne, une lèvre 232 externe et un appui 233 reliant la lèvre 231 interne et la lèvre 232 externe. Le joint 230 d’étanchéité présente, en section transversale, une forme générale en U.
[0027] La lèvre 231 interne est destinée à être en contact avec l’arbre 220. La lèvre 231 interne est en contact avec une jupe 410 du dispositif 400 de protection lorsque le joint 230 d’étanchéité est pré-monté sur le dispositif 400 de protection. In the embodiment shown, the seal 230 comprises an inner lip 231, an outer lip 232 and a support 233 connecting the inner lip 231 and the outer lip 232. The seal 230 has, in cross section, a generally U-shape. The inner lip 231 is intended to be in contact with the shaft 220. The inner lip 231 is in contact with a skirt 410 of the protection device 400 when the seal 230 is pre-mounted on the device 400 protection.
[0028] La lèvre 232 externe est destinée à être en contact avec le carter 210. The external lip 232 is intended to be in contact with the housing 210.
[0029] L’appui 233 est destiné à être en contact avec la presse 300, lors du montage du joint 230 d’étanchéité sur l’arbre 220. The support 233 is intended to be in contact with the press 300, during assembly of the seal 230 on the shaft 220.
[0030] Selon le mode de réalisation représenté, le dispositif 400 de protection comprend un épaulement 420 bloquant l’insertion du joint 230 d’étanchéité sur le dispositif 400 de protection lors du pré-montage. According to the embodiment shown, the protection device 400 comprises a shoulder 420 blocking the insertion of the seal 230 on the protection device 400 during pre-assembly.
[0031 ] Le dispositif 400 de protection comprend un moyen 430 de liaison hélicoïdale primaire destiné à coopérer avec un moyen 321 de liaison hélicoïdale secondaire de la presse 300. The protection device 400 comprises a primary helical linkage means 430 intended to cooperate with a secondary helical linkage means 321 of the press 300.
[0032] Selon le mode de réalisation illustré, l’épaulement 420 sépare sensiblement le moyen 430 de liaison hélicoïdale primaire et la jupe 410 du dispositif 400 de protection. Dans des modes de réalisation différents, le moyen 430 de liaison hélicoïdale primaire est disposé sur la jupe 410. According to the illustrated embodiment, the shoulder 420 substantially separates the primary helical connecting means 430 and the skirt 410 of the protection device 400. In different embodiments, the primary helical connecting means 430 is disposed on the skirt 410.
[0033] Dans le mode de réalisation illustré, le moyen 430 de liaison hélicoïdale primaire est un taraudage et le moyen 321 de liaison hélicoïdale secondaire est un filetage. Le taraudage et le filetage s’étendent sur une longueur limitée, respectivement, du dispositif 400 de protection et de la presse. In the illustrated embodiment, the primary helical connecting means 430 is a tapping and the secondary helical connecting means 321 is a thread. The tapping and threading extend over a limited length, respectively, of the protection device 400 and the press.
[0034] Selon le mode de réalisation illustré, le joint 230 d’étanchéité et le dispositif 400 de protection et l’arbre 220 présentent des formes de révolution. Le joint 230 d’étanchéité et le dispositif 400 de protection présentent une forme annulaire, complémentaire à la forme cylindrique de section circulaire de l’arbre 220, de sorte que le joint 230 d’étanchéité et le dispositif 400 de protection soient emmanchés sur l’arbre 220. Le dispositif 400 de protection s’étend sur tout le pourtour de l’arbre 220. L’épaulement 420 présente une forme sensiblement annulaire s’étendant vers l’extérieur du dispositif 400 de protection et disposé sensiblement au milieu du dispositif 400 de protection.
[0035] Dans le mode de réalisation représenté, la presse 300 présente une forme générale de tube à section transversale circulaire. La presse 300 présente, de préférence, un diamètre interne sensiblement égal au diamètre externe de l’arbre 220 améliorant le guidage de la presse 300 par rapport à l’arbre 220 lors du montage du joint 230 d’étanchéité. According to the illustrated embodiment, the seal 230 and the protection device 400 and the shaft 220 have forms of revolution. The seal 230 and the protective device 400 have an annular shape, complementary to the cylindrical shape of circular section of the shaft 220, so that the seal 230 and the protective device 400 are fitted on the 220. The protective device 400 extends over the entire periphery of the shaft 220. The shoulder 420 has a substantially annular shape extending outwardly of the protection device 400 and arranged substantially in the middle of the device. 400 of protection. In the embodiment shown, the press 300 has a general shape of circular cross section tube. The press 300 preferably has an internal diameter substantially equal to the outer diameter of the shaft 220 improving the guiding of the press 300 relative to the shaft 220 during assembly of the seal 230.
[0036] Dans le mode de réalisation illustré, la presse 300 comprend : une partie 310 externe destinée à être en contact avec l’appui 233 du joint 230 d’étanchéité, lors du montage du joint 230 d’étanchéité sur l’arbre 220, et une partie 320 interne comprenant le moyen 321 de liaison hélicoïdale secondaire et mobile en rotation par rapport à la partie 310 externe. In the illustrated embodiment, the press 300 comprises: an outer portion 310 intended to be in contact with the support 233 of the seal 230, when mounting the seal 230 on the shaft 220 and an inner portion 320 comprising the secondary helical connecting means 321 and rotatable relative to the outer portion 310.
[0037] Le procédé 1000 de montage du joint 230 d’étanchéité sur l’arbre 220 est présenté schématiquement sur la figure 8 et est illustré sur les figures 3 à 7. The method 1000 for mounting the seal 230 on the shaft 220 is shown schematically in Figure 8 and is illustrated in Figures 3 to 7.
[0038] Le procédé 1000 de montage comprend une étape 1001 d’emmanchement primaire du joint 230 d’étanchéité sur l’arbre 220, illustrée sur les figures 3 et 4, jusqu’au contact de la jupe 410 du dispositif 400 de protection avec une paroi 223 de blocage de l’arbre 220, le dispositif 400 de protection venant ainsi en butée contre la paroi 223 de blocage. Lors de l’étape 1001 d’emmanchement primaire, l’appui 233 du joint 230 d’étanchéité est au contact de la partie 310 externe de la presse 300, cette dernière poussant le joint 230 d’étanchéité et le dispositif 400 de protection le long de l’extrémité 221 saillante de l’arbre 220, suivant un sens 2 d’enfoncement. La jupe 410 du dispositif 400 de protection est disposée entre l’arbre 220 et le joint 230 d’étanchéité protégeant ce dernier d’un endommagement potentiel causé par la ou les arêtes vives de l’extrémité 221 de l’arbre 220. The mounting method 1000 comprises a step 1001 primary fitting of the seal 230 on the shaft 220, shown in Figures 3 and 4, until the contact with the skirt 410 of the protection device 400 with a wall 223 blocking the shaft 220, the protective device 400 thus abuts against the wall 223 blocking. During step 1001 of primary fitting, the support 233 of the seal 230 is in contact with the external part 310 of the press 300, the latter pushing the seal 230 and the protection device 400 the along the end 221 protruding from the shaft 220, in a direction 2 of depression. The skirt 410 of the protective device 400 is disposed between the shaft 220 and the seal 230 protecting the latter against potential damage caused by the sharp edge or edges of the end 221 of the shaft 220.
[0039] Dans le mode de réalisation illustré, les arêtes vives sont disposées suivant une direction définie par le sens 2 d’enfoncement correspondant à la direction suivant laquelle s’étend l’arbre 220. Dans des modes de réalisation différents, les arêtes vives sont perpendiculaire, obliques ou dans différentes directions par rapport à ladite direction suivant laquelle s’étend l’arbre 220. In the illustrated embodiment, the sharp edges are arranged in a direction defined by the direction of penetration 2 corresponding to the direction in which the shaft 220 extends. In different embodiments, the sharp edges are perpendicular, oblique or in different directions with respect to said direction along which the shaft 220 extends.
[0040] Dans le mode réalisation représenté, la paroi 223 de blocage de l’arbre 220 définie sur l’arbre 220 un diamètre supérieur au diamètre de l’extrémité 221 et au diamètre du dispositif 400 de protection.
[0041 ] Comme représenté sur la figure 5, le procédé 1000 de montage comprend une étape 1002 d’emmanchement secondaire du joint 230 d’étanchéité sur l’arbre. L’appui 233 du joint 230 d’étanchéité reste en contact avec la partie 310 externe de la presse 300, cette dernière poussant le joint 230 d’étanchéité, suivant le sens 2 d’enfoncement. Le dispositif 400 de protection est, quant à lui, bloqué en translation suivant le sens 2 d’enfoncement de sorte que le joint 230 d’étanchéité glisse sur le dispositif 400 de protection jusqu’à sa position finale, entre le carter 210 et l’arbre 220 de la boîte 200 de vitesses. In the embodiment shown, the wall 223 blocking the shaft 220 defined on the shaft 220 a diameter greater than the diameter of the end 221 and the diameter of the device 400 of protection. As shown in Figure 5, the mounting method 1000 comprises a step 1002 of secondary fitting of the seal 230 on the shaft. The support 233 of the seal 230 remains in contact with the external portion 310 of the press 300, the latter pushing the seal 230, in the direction of depression 2. The protection device 400 is, for its part, locked in translation in the direction of depression so that the seal 230 slides on the protection device 400 to its final position, between the housing 210 and the housing. 220 shaft of the gearbox 200.
[0042] Lorsque le joint 230 d’étanchéité est disposé dans sa position finale, comme illustré sur la figure 5, le moyen 430 de liaison hélicoïdale primaire du dispositif 400 de protection est en contact avec le moyen 321 de liaison hélicoïdale secondaire de la partie 320 interne de la presse 300. When the sealing gasket 230 is disposed in its final position, as shown in Figure 5, the primary helical connection means 430 of the protection device 400 is in contact with the secondary helical connecting means 321 of the part 320 internal of the press 300.
[0043] Le procédé 1000 de montage du joint 230 d’étanchéité comprend une étape 1003 de liaison de la partie 320 interne de la presse 300 et du dispositif 400 de protection, représentée sur la figure 6. Lors de l’étape 1003 de liaison, la partie 320 interne est mue en rotation, suivant un sens 3 de liaison, de sorte que le moyen 430 de liaison hélicoïdale primaire et le moyen 321 de liaison hélicoïdale secondaire coopèrent et créent une liaison hélicoïdale solidarisant la partie 320 interne de la presse 300 et le dispositif 400 de protection. Le dispositif 400 de protection est ainsi mû suivant un sens 4 de retrait opposé au sens 2 d’enfoncement. The method 1000 for mounting the sealing gasket 230 comprises a step 1003 for connecting the internal portion 320 of the press 300 and the protection device 400, shown in FIG. 6. During the connection step 1003 , the inner portion 320 is rotated in a connecting direction 3, so that the primary helical connecting means 430 and the secondary helical connecting means 321 cooperate and create a helical connection solidarisant the inner portion 320 of the press 300 and the protection device 400. The protective device 400 is thus moved in a direction of withdrawal 4 opposite to the direction of depressing.
[0044] Dans le mode de réalisation représenté, la partie 310 externe de la presse 300 comprend un renfoncement 311 , s’étendant vers la partie 320 interne de la presse 300, destiné à bloquer, par contact entre le renfoncement 311 et l’épaulement 420 du dispositif 400 de protection, le dispositif 400 de protection en translation suivant le sens 4 de retrait. In the embodiment shown, the outer portion 310 of the press 300 comprises a recess 311, extending towards the inner portion 320 of the press 300, intended to block, by contact between the recess 311 and the shoulder 420 of the protection device 400, the protection device 400 in translation in the direction 4 of withdrawal.
[0045] Lors de l’étape 1003 de liaison, la partie 310 externe de la presse 300, en contact avec le joint 230 d’étanchéité, est immobile en rotation par rapport au joint 230 d’étanchéité. Ainsi, le joint 230 d’étanchéité n’est pas endommagé par un frottement dû à un mouvement relatif entre la partie 310 externe et le joint 230 d’étanchéité. In step 1003 of the connection, the outer portion 310 of the press 300, in contact with the seal 230, is immobile in rotation relative to the seal 230. Thus, the seal 230 is not damaged by friction due to relative movement between the outer portion 310 and the seal 230.
[0046] Selon un mode de réalisation différent, la presse 300 ne comprend que la partie 310 externe munie du moyen 321 de liaison hélicoïdale secondaire. En variante, la partie 310 externe comprend un roulement en contact du joint 230 d’étanchéité de
sorte à ne pas endommager le joint 230 d’étanchéité lors de la rotation de la partie 310 externe créant la liaison hélicoïdale. According to a different embodiment, the press 300 includes only the outer portion 310 provided with the means 321 secondary helical link. In a variant, the outer portion 310 comprises a bearing in contact with the seal 230 of so as not to damage the sealing gasket 230 during the rotation of the outer portion 310 creating the helical connection.
[0047] Comme illustré sur la figure 7, le procédé 1000 de montage comprend une étape 1004 de retrait de la presse 300 et du dispositif 400 de protection de l’arbre 220. La presse 300 est mue suivant le sens 4 de retrait tirant avec elle le dispositif 400 de protection solidaire de la partie 320 interne de la presse 300 par le biais de la liaison hélicoïdale. As illustrated in FIG. 7, the assembly method 1000 includes a step 1004 for removing the press 300 and the device 400 for protecting the shaft 220. The press 300 is moved in the direction 4 of withdrawal pulling with it the protective device 400 secured to the internal portion 320 of the press 300 through the helical link.
[0048] Le procédé 1000 de montage du joint comprend une étape 1005 de désolidarisation du dispositif 400 de protection de la presse 300. La partie 320 interne de la presse est mue en rotation de sorte que le moyen 430 de liaison hélicoïdale primaire et le moyen 321 de liaison hélicoïdale secondaire supprime la liaison hélicoïdale solidarisant la partie 320 interne de la presse 300 et le dispositif 400 de protection. Le dispositif 400 de protection est ainsi désolidarisé automatiquement de la presse 300. The method 1000 for mounting the seal comprises a step 1005 of uncoupling the device 400 for protecting the press 300. The internal portion 320 of the press is rotated so that the means 430 of primary helical connection and the means 321 secondary helical link deletes the helical connection solidarisant the inner portion 320 of the press 300 and 400 protection device. The protection device 400 is thus automatically disconnected from the press 300.
[0049] Par automatique est entendu sans intervention manuelle d’un opérateur sur le dispositif 400 de protection. By automatic is heard without manual intervention of an operator on the 400 protection device.
[0050] Dans le mode de réalisation représenté, la partie 320 interne de la presse est mue en rotation, lors de l’étape 1005 de désolidarisation, suivant un sens opposé au sens 3 de liaison. In the embodiment shown, the internal portion 320 of the press is rotated, during the step 1005 of uncoupling, in a direction opposite to the direction 3 of connection.
[0051 ] Selon des modes de réalisation différents, l’étape 1005 de désolidarisation est réalisée par arrachement du dispositif 400 de protection. En variante, le dispositif 400 de protection est composé en plusieurs parties aptes à se rapprocher de sorte que le dispositif 400 de protection ne soit plus solidaire de la presse 300. According to different embodiments, the step 1005 of uncoupling is performed by tearing the 400 protection device. In a variant, the protection device 400 is composed of several parts that can be brought closer so that the protection device 400 is no longer integral with the press 300.
[0052] Un tel procédé 1000 de montage du joint 230 d’étanchéité sur l’arbre 220 de la boîte 200 de vitesses permet de protéger efficacement le joint 230 d’étanchéité lors de son montage. La presse 300 requise pour mettre en oeuvre ce procédé 1000 de montage est simple de conception et de fabrication. Such a method of mounting the sealing gasket 230 on the shaft 220 of the gearbox 200 makes it possible to effectively protect the seal 230 during its assembly. The press 300 required to implement this mounting method 1000 is simple to design and manufacture.
[0053] Le procédé 1000 de montage permet également, en supprimant des étapes manuelles, de gagner du temps sur l’assemblage d’un véhicule 1 automobile et plus particulièrement d’une boîte 200 de vitesses ainsi que de gagner en qualité en évitant des risques d’oublis de réalisation d’étapes manuelles.
The assembly method 1000 also allows, by eliminating manual steps, to save time on the assembly of a vehicle 1 automobile and more particularly a box 200 speeds and to improve quality by avoiding problems. risks of forgetting the realization of manual steps.
Claims
REVENDICATIONS
1. Procédé (1000) de montage d’un joint (230) d’étanchéité sur une pièce cylindrique comprenant au moins une arête vive susceptible d’endommager le joint (230) d’étanchéité, le joint (230) d’étanchéité étant pré-monté sur un dispositif (400) de protection, le joint (230) d’étanchéité et le dispositif (400) de protection présentant une forme générale annulaire complémentaire à la forme de la pièce, le procédé (1000) de montage comprenant : une étape (1001) d’emmanchement primaire, par le biais d’une presse (300), du dispositif (400) de protection et du joint (230) d’étanchéité sur la pièce, par glissement du dispositif (400) de protection, suivant un sens (2) d’enfoncement, sur la au moins une arête vive ; le dispositif (400) de protection étant disposé entre la pièce et le joint (230) d’étanchéité ; une étape (1002) d’emmanchement secondaire, par le biais de la presse (300), du joint (230) d’étanchéité sur la pièce ; le dispositif (400) de protection étant bloqué en translation, suivant le sens (2) d’enfoncement, contre une paroi (223) de blocage de la pièce ; le joint (230) d’étanchéité glissant, suivant le sens (2) d’enfoncement, sur le dispositif (400) de protection puis sur la pièce, au-delà de la au moins une arête vive ; une étape (1003) de liaison de la presse (300) et du dispositif (400) de protection ; - une étape (1004) de retrait de la presse (300), suivant un sens (4) de retrait opposé au sens (2) d’enfoncement, la presse (300) retirant avec elle le dispositif (400) de protection ; le procédé (1000) de montage étant caractérisé en ce que l’étape (1003) de liaison est réalisée par rotation de la presse (300) par rapport au dispositif (400) de protection, suivant un sens (3) de liaison, créant une liaison hélicoïdale entre la presse (300) et le dispositif (400) de protection. 1. Method (1000) for mounting a seal (230) sealing on a cylindrical piece comprising at least one sharp edge likely to damage the seal (230) sealing, the seal (230) sealing being pre-mounted on a protection device (400), the sealing gasket (230) and the protection device (400) having an annular general shape complementary to the shape of the part, the method (1000) of mounting comprising: a step (1001) of primary fitting, by means of a press (300), of the device (400) of protection and the seal (230) of sealing on the workpiece, by sliding of the device (400) of protection following a direction (2) of depression on the at least one sharp edge; the protection device (400) being disposed between the workpiece and the sealing gasket (230); a step (1002) secondary fitting, through the press (300), the seal (230) sealing the workpiece; the protection device (400) being locked in translation, in the depressing direction (2), against a wall (223) for blocking the workpiece; the sealing seal (230) sliding, in the direction (2) of depression, on the device (400) of protection and on the piece, beyond the at least one sharp edge; a step (1003) for connecting the press (300) and the protection device (400); a step (1004) for withdrawing the press (300), in a direction (4) of withdrawal opposite to the direction (2) of depression, the press (300) withdrawing with it the device (400) of protection; the method (1000) of mounting being characterized in that the step (1003) of connection is carried out by rotation of the press (300) relative to the device (400) of protection, in a direction (3) of connection, creating a helical link between the press (300) and the protection device (400).
2. Procédé (1000) de montage d’un joint (230) d’étanchéité selon la revendication précédente, caractérisé en ce que, lors de l’étape (1003) de liaison, la liaison hélicoïdale entre la presse (300) et le dispositif (400) de protection s’effectue par
coopération entre un filetage du dispositif (400) de protection et un taraudage de la presse (300). 2. Method (1000) for mounting a seal (230) sealing according to the preceding claim, characterized in that, during the step (1003) of connection, the helical connection between the press (300) and the protection device (400) is provided by cooperation between a thread of the device (400) of protection and a tapping of the press (300).
3. Procédé (1000) de montage d’un joint (230) d’étanchéité selon l’une quelconque des revendications précédentes, caractérisé en ce que l’étape (1003) de liaison est réalisée par rotation, suivant le sens (3) de liaison, d’une partie (320) interne de la presse (300), une partie (310) externe de la presse (300) étant bloquée en rotation, suivant le sens (3) de liaison. 3. Method (1000) for mounting a seal (230) sealing according to any one of the preceding claims, characterized in that the step (1003) of connection is carried out by rotation, according to the direction (3) connection, an inner portion (320) of the press (300), an outer portion (310) of the press (300) being locked in rotation in the direction (3) of connection.
4. Procédé (1000) de montage d’un joint (230) d’étanchéité selon l’une quelconque des revendications précédentes, caractérisé en ce que, lors de l’étape (1003) de liaison, un renfoncement (311) de la presse (300) bloque, par butée contre un épaulement (420) du dispositif (400) de protection, le dispositif (400) de protection en translation suivant le sens (4) de retrait. 4. Method (1000) for mounting a seal (230) sealing according to any one of the preceding claims, characterized in that, during the step (1003) of connection, a recess (311) of the press (300) blocks, by abutment against a shoulder (420) of the device (400) of protection, the device (400) for protection in translation along the direction (4) withdrawal.
5. Procédé (1000) de montage d’un joint (230) d’étanchéité selon l’une quelconque des revendications précédentes, caractérisé en ce qu’il comprend, après l’étape (1004) de retrait, une étape (1005) de désolidarisation du dispositif (400) de protection de la presse (300) réalisée par rotation de la presse (300) par rapport au dispositif (400) de protection, suivant un sens opposé au sens (3) de liaison, supprimant la liaison hélicoïdale entre la presse (300) et le dispositif (400) de protection. 5. Method (1000) for mounting a seal (230) sealing according to any one of the preceding claims, characterized in that it comprises, after the step (1004) of withdrawal, a step (1005) detaching the device (400) for protecting the press (300) made by rotating the press (300) relative to the protection device (400) in a direction opposite to the connecting direction (3), eliminating the helical connection between the press (300) and the protection device (400).
6. Procédé (1000) de montage d’un joint (230) d’étanchéité selon la revendication précédente, caractérisé en ce que l’étape (1005) de désolidarisation est réalisée par rotation, suivant ledit sens opposé au sens (3) de liaison, de la partie (320) interne de la presse (300), la partie (310) externe de la presse (300) étant bloquée en rotation, suivant ledit sens opposé au sens (3) de liaison. 6. Method (1000) for mounting a seal (230) sealing according to the preceding claim, characterized in that the step (1005) of uncoupling is performed by rotation, in said opposite direction to the direction (3) of connection, the portion (320) internal of the press (300), the portion (310) external of the press (300) being locked in rotation in said opposite direction to the direction (3) of connection.
7. Procédé (1000) de montage d’un joint (230) d’étanchéité selon l’une quelconque des revendications précédentes, caractérisé en ce que, lors de l’étape (1001) d’emmanchement primaire, la au moins une arête vive sur laquelle glisse le dispositif (400) de protection s’étendent suivant une direction définie par le sens (2) d’enfoncement. 7. Method (1000) for mounting a seal (230) sealing according to any one of the preceding claims, characterized in that, during the step (1001) of primary fitting, the at least one edge vivid on which slides the device (400) of protection extend in a direction defined by the direction (2) of depression.
8. Procédé (1000) de montage d’un joint (230) d’étanchéité selon l’une quelconque des revendications précédentes, caractérisé en ce que, lors de l’étape (1001) d’emmanchement primaire, la pièce comprend plusieurs arêtes vives réparties sur tout
le pourtour de ladite pièce et le dispositif (400) de protection s’étend sur tout le pourtour de ladite pièce. 8. Method (1000) for mounting a seal (230) sealing according to any one of the preceding claims, characterized in that, during the step (1001) of primary fitting, the piece comprises several edges vividly spread over everything the periphery of said piece and the device (400) of protection extends around the entire periphery of said piece.
9. Procédé d’assemblage d’une boîte (200) de vitesses, la boîte (200) de vitesses comprenant : - un carter (210), un arbre (220) comportant une extrémité (221) munie d’au moins une arête vive, ladite extrémité (221) de l’arbre (220) faisant saillie du carter (210), et un joint (230) d’étanchéité disposé entre le carter (210) et l’arbre (220), le procédé d’assemblage de la boîte (200) de vitesses étant caractérisé en ce qu’il comprend une étape d’emmanchement du joint (230) d’étanchéité sur l’arbre (220) réalisée suivant le procédé (1000) de montage selon l’une quelconque des revendications précédentes. 9. A method of assembling a gearbox (200), the gearbox (200) comprising: - a housing (210), a shaft (220) having an end (221) provided with at least one edge live, said end (221) of the shaft (220) protruding from the housing (210), and a seal (230) sealing between the housing (210) and the shaft (220), the method of assembly of the gearbox (200) being characterized in that it comprises a step of fitting the seal (230) sealing on the shaft (220) made according to the method (1000) of mounting according to one any of the preceding claims.
10. Procédé d’assemblage d’une boîte (200) de vitesses selon la revendication précédente, caractérisé en ce que, en fin de l’étape (1002) d’emmanchement secondaire : une lèvre (231) interne du joint (230) d’étanchéité est en contact avec l’arbre10. A method of assembling a gearbox (200) of speeds according to the preceding claim, characterized in that, at the end of the step (1002) secondary fitting: a lip (231) internal seal (230) sealing is in contact with the shaft
(220), une lèvre (232) externe du joint (230) d’étanchéité est en contact avec le carter(220), an outer lip (232) of the seal (230) sealing is in contact with the housing
(210), - un appui (233) du joint (230) d’étanchéité est en contact avec la presse (300), le joint (230) d’étanchéité présentant, en section transversale, une forme générale en U.
(210), - a support (233) of the sealing gasket (230) is in contact with the press (300), the sealing gasket (230) having, in cross-section, a generally U-shape.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1853560A FR3080425B1 (en) | 2018-04-24 | 2018-04-24 | METHOD OF MOUNTING A SEAL ON A GEARBOX |
FR1853560 | 2018-04-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019207223A1 true WO2019207223A1 (en) | 2019-10-31 |
Family
ID=63014714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2019/050629 WO2019207223A1 (en) | 2018-04-24 | 2019-03-20 | Method for mounting a seal on a gearbox shaft |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR3080425B1 (en) |
WO (1) | WO2019207223A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114165523A (en) * | 2021-11-10 | 2022-03-11 | 嘉兴嘉优易轴承科技有限公司 | Automatic and accurate bearing double-seal press-fitting tool and press-fitting method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0808686A1 (en) * | 1996-05-24 | 1997-11-26 | Automobiles Peugeot | Press-fitting device for a seal on a shaft |
JP2005088144A (en) * | 2003-09-18 | 2005-04-07 | Honda Motor Co Ltd | Seal member press-in device |
DE102014016722A1 (en) | 2014-11-13 | 2016-05-19 | Carl Freudenberg Kg | Mounting device for a sealing ring |
US20170043461A1 (en) * | 2014-03-19 | 2017-02-16 | Deere & Company | Seal Installation Guide Sleeve |
-
2018
- 2018-04-24 FR FR1853560A patent/FR3080425B1/en active Active
-
2019
- 2019-03-20 WO PCT/FR2019/050629 patent/WO2019207223A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0808686A1 (en) * | 1996-05-24 | 1997-11-26 | Automobiles Peugeot | Press-fitting device for a seal on a shaft |
JP2005088144A (en) * | 2003-09-18 | 2005-04-07 | Honda Motor Co Ltd | Seal member press-in device |
US20170043461A1 (en) * | 2014-03-19 | 2017-02-16 | Deere & Company | Seal Installation Guide Sleeve |
DE102014016722A1 (en) | 2014-11-13 | 2016-05-19 | Carl Freudenberg Kg | Mounting device for a sealing ring |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114165523A (en) * | 2021-11-10 | 2022-03-11 | 嘉兴嘉优易轴承科技有限公司 | Automatic and accurate bearing double-seal press-fitting tool and press-fitting method thereof |
CN114165523B (en) * | 2021-11-10 | 2024-04-12 | 嘉兴嘉优易轴承科技有限公司 | Automatic and accurate press-fitting tool for double seals of bearing and press-fitting method thereof |
Also Published As
Publication number | Publication date |
---|---|
FR3080425A1 (en) | 2019-10-25 |
FR3080425B1 (en) | 2020-03-27 |
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