FR2613790A1 - Transmission shaft particularly for a motor vehicle - Google Patents

Transmission shaft particularly for a motor vehicle Download PDF

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Publication number
FR2613790A1
FR2613790A1 FR8704900A FR8704900A FR2613790A1 FR 2613790 A1 FR2613790 A1 FR 2613790A1 FR 8704900 A FR8704900 A FR 8704900A FR 8704900 A FR8704900 A FR 8704900A FR 2613790 A1 FR2613790 A1 FR 2613790A1
Authority
FR
France
Prior art keywords
tubular element
section
shoulder
engaged
transmission shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR8704900A
Other languages
French (fr)
Other versions
FR2613790B1 (en
Inventor
Alain Jean-Paul Girardin
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.)
Aciers et Outillage Peugeot SA
Original Assignee
Aciers et Outillage Peugeot SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aciers et Outillage Peugeot SA filed Critical Aciers et Outillage Peugeot SA
Priority to FR8704900A priority Critical patent/FR2613790B1/en
Publication of FR2613790A1 publication Critical patent/FR2613790A1/en
Application granted granted Critical
Publication of FR2613790B1 publication Critical patent/FR2613790B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/14—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces applying magnetic forces
    • 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
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • F16C3/026—Shafts made of fibre reinforced resin
    • 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
    • F16C2202/00—Solid materials defined by their properties
    • F16C2202/30—Electric properties; Magnetic properties
    • F16C2202/40—Magnetic
    • F16C2202/42—Magnetic soft-magnetic, ferromagnetic
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/06—Drive shafts

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ocean & Marine Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

This transmission shaft particularly for a motor vehicle of the type including a tubular element 1 to the ends of which are fixed connection fittings 2 each one including a portion 3 whose cross-section is complementary to the internal cross-section of the tubular element 1 and engaged in the latter and a shoulder 4 in abutment against the corresponding end of the tubular element, is characterised in that a ring 5 whose cross-section is complementary to the external cross-sections of the tubular element 1 and of the shoulder 4 of the fitting 2 is located and shrunk onto the latter by magneto-forming.

Description

La présente invention concerne un arbre de transmission notamment pour véhicule automobile. The present invention relates to a drive shaft in particular for a motor vehicle.

On connait déjå dans l'état de la technique
un certain nombre d'arbres de ce type qui comportent un élément tubulaire par exemple en matériau composite. aux extrémités duquel sont fixés des embouts de raccordement.We already know in the state of the art
a certain number of shafts of this type which comprise a tubular element for example of composite material. at the ends of which are fixed connection end pieces.

Ces embouts de raccordement comportent chacun une portion de section complémentaire à la section interne de l'élément tubulaire, engagée dans celui-ci et un épaulement en butée contre l'extrémité correspondante de l'élément tubulaire. These connection ends each have a section portion complementary to the internal section of the tubular element, engaged in the latter and a shoulder abutting against the corresponding end of the tubular element.

Cependant, ces arbres présentent un certain nombre d inconvénients. notamment au niveau de leur capacité à transmettre un couple important en raison de la relative faiblesse de la fixation des embouts sur les extrémités de ces arbres. However, these trees have a number of drawbacks. especially in terms of their ability to transmit a significant torque due to the relative weakness of the attachment of the tips on the ends of these shafts.

Le but de l'invention est donc de résoudre ces problèmes en proposant un arbre de transmission dont la structure soit simple, fiable, qui permette de transmettre un couple relativement important et qui soit d'un prix de revient relativement faible. The object of the invention is therefore to solve these problems by proposing a transmission shaft whose structure is simple, reliable, which makes it possible to transmit a relatively large torque and which has a relatively low cost price.

A cet effet, 1 invention a pour objet un arbre de transmission du type tel que décrit précédemment. caractérisé en ce qu'une bague de section complémentaire aux sections externes de l'élément tubulaire et de l'épaulement de l'embout, est disposée et rétreinte sur ceux-ci par magnéto-formage. To this end, 1 invention relates to a transmission shaft of the type as described above. characterized in that a ring of complementary section to the external sections of the tubular element and of the shoulder of the end piece, is arranged and constricted thereon by magneto-forming.

Selon une caractéristique de l'invention, la portion de embout engagée dans 1 élément tubulaire présente une portion dans laquelle sont ménagés des moyens de blocage en rotation de 1 élément tubulaire par rapport à l'embout. According to a characteristic of the invention, the end portion engaged in 1 tubular element has a portion in which are formed means for blocking the rotation of 1 tubular element relative to the end piece.

L'invention sera mieux comprise à l'aide de la description qui va suivre. donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels
- la Fig.1 représente les différents élémonts entrant dans la constitution d'un arbre selon l'invention ; et
- la Fig.2 représente une vue partiellement en coupe d'une extrémité d'un arbre de transmission selon l'invention.The invention will be better understood with the aid of the description which follows. given only by way of example and made with reference to the accompanying drawings, in which
- Fig.1 shows the different elements used in the constitution of a tree according to the invention; and
- Fig.2 shows a partially sectional view of one end of a drive shaft according to the invention.

Ainsi qu'on peut le voir sur les Fiv.1 et 2, un arbre de transmission notamment de véhicule automobile, comporte un élément tubulaire 1 en matériau composite constitué par exemple de fibres de carbone ou de fibres de verre noyées dans un liant. Cet élé- ment en matériau composite est calculé pour transmettre un couple d'entraînement et résister à la fatigue due à son utilisation. As can be seen in Fiv. 1 and 2, a drive shaft, in particular of a motor vehicle, comprises a tubular element 1 made of composite material consisting for example of carbon fibers or glass fibers embedded in a binder. This composite material element is calculated to transmit a drive torque and resist fatigue due to its use.

Ainsi qu'il est connu, cet élément tubulaire comporte à chacune de ses extrémités un embout de raccordement, par exemple 2, permettant de relier l'arbre de transmission à tout autre organe par exempie de la chaîne de transmission. Ces embouts sont par exemple constitués d'acier et la forme de ceux-ci peut varier à chacune des extrémités de l'arbre de transmission, comme cela est connu. Chaque embout de raccordement, par exemple 2, comporte une portion 3 de section complémentaire à la section interne de l'élé- ment tubulaire 1 engagée dans celui-ci. As is known, this tubular element comprises at each of its ends a connection end piece, for example 2, making it possible to connect the transmission shaft to any other member, for example, of the transmission chain. These ends are for example made of steel and the shape of these can vary at each end of the drive shaft, as is known. Each connection end piece, for example 2, has a portion 3 of cross section complementary to the internal section of the tubular element 1 engaged therein.

Par ailleurs, chaque embout 2 comporte également un épaulement s en butée contre l'extrémité de l'élément tubulaire 1 afin de transmettre directement à l'élément tubulaire les poussées axiales sur ces embouts de raccordement. Furthermore, each end piece 2 also has a shoulder s which abuts against the end of the tubular element 1 so as to transmit the axial thrusts directly to these connection end pieces to the tubular element.

Selon l'invention, une bague 5 constituée de matériau magnétisable et conducteur de l'électricité, comme par exemple de l'acier, et de section complémentaire aux sections externes de l'élément tubulaire 1 et de l'épaulement 4 de l'embout 2, est disposée et rétreinte sur ceux-ci par magnéto-formage. According to the invention, a ring 5 made of magnetizable and electrically conductive material, such as steel, and of section complementary to the external sections of the tubular element 1 and the shoulder 4 of the end piece 2, is arranged and constricted thereon by magneto-forming.

Cette technique du magnéto-formage étant bien connue en soi, on ne la décrira pas en détail. Since this magneto-forming technique is well known in itself, it will not be described in detail.

Il y a lieu cependant de noter que l'ensem- ble est introduit dans une self de magnéto-formage et rétreint par décharge pour prendre la forme qui est représentée sur la Fig.2, dans laquelle la bague 5 est serrée autour de l'élément tubulaire 1 et de l'épaulement 4 de l'embout 2. It should however be noted that the assembly is introduced into a magnetoforming inductor and shrunk by discharge to take the shape which is shown in FIG. 2, in which the ring 5 is tightened around the tubular element 1 and the shoulder 4 of the nozzle 2.

Ce type d'assemblage est suffisant pour transmettre les couples que l'on rencontre généralement dans ce type d'applications. Cependant, il est possible de renforcer cet assemblage en disposant, comme on peut le voir plus particulièrement sur la
Fig.1, des couches de colle 6 et 7, d'une part entre la portion de l'embout 2 engagée dans l'élément tubulaire et cet élément tubulaire et d'autre part entre cet élément tubulaire et la bague 5. Cette colle peut se présenter sous forme liquide, pâteuse ou solide et lors du magnéto-formage, l'échauffement de la bague 5 peut être suffisant pour polymériser la colle.This type of assembly is sufficient to transmit the torques that are generally encountered in this type of application. However, it is possible to reinforce this assembly by arranging, as can be seen more particularly on the
Fig.1, layers of glue 6 and 7, on the one hand between the portion of the nozzle 2 engaged in the tubular element and this tubular element and on the other hand between this tubular element and the ring 5. This glue may be in liquid, pasty or solid form and during magnetoforming, the heating of the ring 5 may be sufficient to polymerize the adhesive.

Si cet échauffement est insuffisant, une opération d'étuvage peut être prévue pour achever la polymérisation. If this heating is insufficient, a steaming operation may be provided to complete the polymerization.

La portion de l'embout 2 engagée dans l'élément tubulaire 1 peut également présenter une portion 8 dans laquelle sont ménagés des moyens de blocage en rotation de l'élément tubulaire i par rapport à l'embout 2. Ainsi, ces moyens de blocage peuvent être constitués par des cannelures, par des stries ou par un moletage, ces moyens de blocage pénétrant dans l'élément tubulaire lors de l'opération de magnétoformage de la bague, pour assurer un blocage en rotation extrêmement fiable entre ces deux pièces. The portion of the end piece 2 engaged in the tubular element 1 may also have a portion 8 in which are formed means for blocking the tubular element i in rotation relative to the end piece 2. Thus, these blocking means can be constituted by grooves, by grooves or by knurling, these blocking means penetrating into the tubular element during the magnetoforming operation of the ring, to ensure an extremely reliable rotational locking between these two parts.

De préférence, cette portion est rectifiée pour obtenir une cote d'assemblage exacte
11 va de soi que l'élément tubulaire et les autres pièces entrant dans la constitution de 1 arbre selon l'invention peuvent présenter une section circulaire ou autre, le mode d'assemblage restant le même, Preferably, this portion is rectified to obtain an exact assembly dimension
It goes without saying that the tubular element and the other parts forming part of the shaft according to the invention may have a circular or other cross-section, the method of assembly remaining the same,

Claims (6)

REVENDICATIONS 1. Arbre de transmission notamment pour véhicule automobile, du type comportant un élément tubulaire (1), aux extrémités duquel sont fixés des embouts (2) de raccordement, comportant chacun une portion (3) de section complémentaire à la section interne de l'élément tubulaire (1) et engagée dans celui-ci, et un épaulement (4) en butée contre l'extrémité de l'élément tubulaire, caractérisé en ce qu'une bague (5) de section complémentaire aux sections externes de l'élément tubulaire (1) et de l'épaulement (4) de l'embout (2) est disposée et rétreinte sur ceux-ci par magnéto-formage. 1. Transmission shaft in particular for a motor vehicle, of the type comprising a tubular element (1), at the ends of which are fixed end pieces (2) for connection, each comprising a portion (3) of section complementary to the internal section of the tubular element (1) and engaged therein, and a shoulder (4) abutting against the end of the tubular element, characterized in that a ring (5) of cross section complementary to the external sections of the element tubular (1) and the shoulder (4) of the nozzle (2) is arranged and constricted thereon by magneto-forming. 2. Arbre selon la revendication 1, caractérisé en ce que des couches de colle (6,7) sont disposées entre la bague (5) et la surface externe de l'élément tubulaire (1) et entre la surface interne de celui-ci et la portion (3) de l'embout engagée dans l'élément tubulaire (1). 2. Tree according to claim 1, characterized in that layers of adhesive (6,7) are arranged between the ring (5) and the external surface of the tubular element (1) and between the internal surface of the latter and the portion (3) of the endpiece engaged in the tubular element (1). 3. Arbre selon la revendication 1 ou 2, caractérisé en ce que la portion (3) de l'embout (2) engagée dans l'élément tubulaire (1) présente une portion (8) dans laquelle sont ménagés des moyens de blocage en rotation de l'élément tubulaire par rapport à l'embout.  3. Tree according to claim 1 or 2, characterized in that the portion (3) of the end piece (2) engaged in the tubular element (1) has a portion (8) in which are formed locking means in rotation of the tubular element relative to the end piece. 4. Arbre selon la revendication 3, caractérisé en ce que lesdits moyens de blocage sont constitués par des cannelures. 4. Tree according to claim 3, characterized in that said locking means are constituted by grooves. 5. Arbre selon la revendication 3, caractérisé en ce que lesdits moyens de blocage sont constitués par un moletage. 5. Tree according to claim 3, characterized in that said locking means are constituted by a knurling. 6. Arbre selon la revendication 3, caractérisé en ce que lesdits moyens de blocage sont constitués par des stries.  6. Tree according to claim 3, characterized in that said locking means are constituted by streaks.
FR8704900A 1987-04-07 1987-04-07 TRANSMISSION SHAFT, PARTICULARLY FOR MOTOR VEHICLE Expired - Fee Related FR2613790B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8704900A FR2613790B1 (en) 1987-04-07 1987-04-07 TRANSMISSION SHAFT, PARTICULARLY FOR MOTOR VEHICLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8704900A FR2613790B1 (en) 1987-04-07 1987-04-07 TRANSMISSION SHAFT, PARTICULARLY FOR MOTOR VEHICLE

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FR2613790A1 true FR2613790A1 (en) 1988-10-14
FR2613790B1 FR2613790B1 (en) 1993-09-24

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1005893A3 (en) * 1992-06-04 1994-03-01 Advanced Technologies For Aero Device for crimping a tube by magnetoforming
DE3828018C2 (en) * 1987-08-29 1998-11-05 Volkswagen Ag Method for producing a composite from a metal inner sleeve and a tube made of fiber-plastic material, and composite produced thereafter
US6065317A (en) * 1997-04-12 2000-05-23 Magnet-Physik Dr. Steingroever Gmbh Apparatus and procedure for manufacturing metallic hollow bodies with structural bulges
DE102005041856A1 (en) * 2005-09-02 2007-03-15 Zf Friedrichshafen Ag Piston-cylinder unit for vehicle, has piston rod guide provided in outer pipe, where end of pipe turned to guide is closed by closure cap, which is deformed by exerting radially acting magnetic force from electromagnet
EP3382219A1 (en) * 2017-03-31 2018-10-03 Crompton Technology Group Limited Composite shaft
US20210231164A1 (en) * 2020-01-29 2021-07-29 Crompton Technology Group Limited Composite end connections

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1527971A1 (en) * 1965-02-01 1969-06-04 Gen Motors Corp Method for clamping a resilient hollow cylindrical body to a relatively rigid tubular body
FR2107783A5 (en) * 1970-09-18 1972-05-05 Schwermasch Liebknecht Veb K
GB2051305A (en) * 1979-05-29 1981-01-14 Celanese Corp Fibre-reinforced composite shaft with metallic connector sleeves
EP0059163A1 (en) * 1981-02-18 1982-09-01 Ciba-Geigy Ag Connection of a plastics torsion shaft to a metal element, and method of producing this connection
US4523872A (en) * 1981-08-12 1985-06-18 Grumman Aerospace Corporation Torsion resistant grooved joint
EP0192505A1 (en) * 1985-01-28 1986-08-27 AEROSPATIALE Société Nationale Industrielle Method of attaching an element to the end of a tube of composite material, and article obtained by said method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1527971A1 (en) * 1965-02-01 1969-06-04 Gen Motors Corp Method for clamping a resilient hollow cylindrical body to a relatively rigid tubular body
FR2107783A5 (en) * 1970-09-18 1972-05-05 Schwermasch Liebknecht Veb K
GB2051305A (en) * 1979-05-29 1981-01-14 Celanese Corp Fibre-reinforced composite shaft with metallic connector sleeves
EP0059163A1 (en) * 1981-02-18 1982-09-01 Ciba-Geigy Ag Connection of a plastics torsion shaft to a metal element, and method of producing this connection
US4523872A (en) * 1981-08-12 1985-06-18 Grumman Aerospace Corporation Torsion resistant grooved joint
EP0192505A1 (en) * 1985-01-28 1986-08-27 AEROSPATIALE Société Nationale Industrielle Method of attaching an element to the end of a tube of composite material, and article obtained by said method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828018C2 (en) * 1987-08-29 1998-11-05 Volkswagen Ag Method for producing a composite from a metal inner sleeve and a tube made of fiber-plastic material, and composite produced thereafter
BE1005893A3 (en) * 1992-06-04 1994-03-01 Advanced Technologies For Aero Device for crimping a tube by magnetoforming
US6065317A (en) * 1997-04-12 2000-05-23 Magnet-Physik Dr. Steingroever Gmbh Apparatus and procedure for manufacturing metallic hollow bodies with structural bulges
DE102005041856A1 (en) * 2005-09-02 2007-03-15 Zf Friedrichshafen Ag Piston-cylinder unit for vehicle, has piston rod guide provided in outer pipe, where end of pipe turned to guide is closed by closure cap, which is deformed by exerting radially acting magnetic force from electromagnet
EP3382219A1 (en) * 2017-03-31 2018-10-03 Crompton Technology Group Limited Composite shaft
US11815133B2 (en) 2017-03-31 2023-11-14 Crompton Technology Group Limited Composite shaft
US20210231164A1 (en) * 2020-01-29 2021-07-29 Crompton Technology Group Limited Composite end connections
US11905991B2 (en) * 2020-01-29 2024-02-20 Crompton Technology Group Limited Composite end connections

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Publication number Publication date
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