WO2009081007A2 - Automobile sub-assembly - Google Patents

Automobile sub-assembly Download PDF

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Publication number
WO2009081007A2
WO2009081007A2 PCT/FR2008/052291 FR2008052291W WO2009081007A2 WO 2009081007 A2 WO2009081007 A2 WO 2009081007A2 FR 2008052291 W FR2008052291 W FR 2008052291W WO 2009081007 A2 WO2009081007 A2 WO 2009081007A2
Authority
WO
WIPO (PCT)
Prior art keywords
component
subassembly
complementary
nut
axis
Prior art date
Application number
PCT/FR2008/052291
Other languages
French (fr)
Other versions
WO2009081007A3 (en
Inventor
Laurent Baudart
Original Assignee
Faurecia Interieur Industrie
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 Faurecia Interieur Industrie filed Critical Faurecia Interieur Industrie
Publication of WO2009081007A2 publication Critical patent/WO2009081007A2/en
Publication of WO2009081007A3 publication Critical patent/WO2009081007A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/14—Dashboards as superstructure sub-units
    • B62D25/145—Dashboards as superstructure sub-units having a crossbeam incorporated therein
    • B62D25/147—Dashboards as superstructure sub-units having a crossbeam incorporated therein with adjustable connection to the A-pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or components
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0216—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable
    • F16B5/0233—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable allowing for adjustment perpendicular to the plane of the plates

Definitions

  • the present invention relates to a motor vehicle subassembly, of the type comprising a first component, a second component, and a device for fixing the first component to the second component.
  • An object of the invention is to provide a subset of a motor vehicle in which the catch-up fixing means can be set up simply.
  • the subject of the invention is a subassembly of the aforementioned type, characterized in that the fixing device comprises a first threaded member and a second threaded member and a third threaded member, in which the first member and the second member member have complementary threads provided with an axis and a first direction of screwing, and the second and third members have complementary threads provided with said axis and a second screwing direction opposite to the first direction of screwing, one of the complementary threads the second member and the third member having a rotational locking member adapted to break beyond a given torque, so that the complementary threads are engaged, the rotation of the third member relative to the first member in the second direction; screwing mechanism causes the second member to rotate and unscrew relative to the first member terminated, an additional rotation causing the screwing of the third member on the second member, wherein the first component and the first member have complementary rotational locking reliefs of the first member relative to the first component around the axis of the threads.
  • the subassembly comprises one or more of the following characteristics, taken in isolation or in any technically possible combination: said complementary rotational locking reliefs comprise a flat part provided on the first member,
  • the first member comprises latching means for axially fixing the first member to the first component;
  • the latching means comprise a blade adapted to snap into at least one holding hole of the first component,
  • the first member comprises a threaded element, the blade being attached and fastened to the threaded element,
  • the blade is locked in rotation and in translation on the threaded element, - the first member is adapted to be inserted into a through hole for fixing the first component, the second member being adapted to be inserted through said through hole of the first component,
  • the second member comprises a bearing head on which is provided an abutment surface adapted to bear against the second component, and having an opposite surface adapted to bear on the first member,
  • said rotational locking element is an elastomeric brake
  • the first member comprises a first nut having an internal thread
  • the second member is a nut having an external thread complementary to the internal thread of the first nut
  • the first member has an additional thread complementary to the thread of the third member, the thread of the third member. member being adapted to engage in the additional thread after rupture of the locking element in rotation.
  • one of the first component and second component is a cross member of the dashboard, and the other is a front foot of a motor vehicle body, the first member is movable in rotation between an insertion position in the orifice the first component following an insertion axis and a locked position in which it is stationary in translation along the axis of insertion,
  • the first member comprises a first support element on a first face of the first component, and at least a second support element on a second opposite face of the first component, said first support element and said second support element. being able to cooperate and thus immobilize in translation the first member along the axis of insertion when the first member is in its locked position, said second support member of the first member is a radially projecting lug,
  • said complementary rotational locking reliefs are adapted to cooperate in locking the first member in the locked position against a torque resulting from screwing the third member into said second screwing direction
  • the holding hole comprises a wide input portion of the blade and in which the blade is accommodated when the first member is in said insertion position, and a narrow portion for holding the blade, extending the insertion portion; and wherein the blade is housed when the first member is in said locked position.
  • FIGS. 1 to 3 are schematic sectional views of a subassembly according to the invention, formed by a dashboard cross, a front foot and a fixing device, and illustrate the various configurations of the fastening device during its tightening;
  • FIG. 4 is a schematic side view of a flange of the dashboard crossmember
  • FIG. 5 is a schematic front view of a lock nut of the fastener
  • FIG. 6 is a schematic front view of a blade of the fastener
  • FIG. 7 and 8 are views similar to those of Figures 1 and 3, illustrating a variant of the fixing device
  • FIGS. 9 and 10 are cross-sectional views of the fixing device of FIG. 7, illustrating steps of mounting of this fixing device.
  • FIG. 11 is a sectional view of another variant of the fastener.
  • the subassembly 2 of a motor vehicle according to the invention comprises a front foot 4 of a motor vehicle body, a dashboard cross member 6 and a fastener 8 of the cross member 6 on the front foot 4.
  • the front feet of the crate are usually called the "A" amount of the crate.
  • the crossbar 6 is intended to extend transversely between the front legs, and to support the dashboard, and associated equipment, such as a steering column, a car radio ....
  • the crosspiece 6 comprises a beam 9 provided to extend transversely, and a flange 10 attached to one end of the beam 9 for attachment to the front foot 4.
  • the front foot 4 comprises a double wall 11 extending parallel to the flange 10.
  • the double wall 11 and the flange 10 respectively have two facing surfaces 14, 15, and two opposite surfaces 16, 17.
  • the flange 10 and the double wall 11 comprise fastening orifices respectively 12, 13 intended to be aligned along an axis X-X '. Each orifice 12, 13 is through.
  • the fastening device 8 is adapted to pass through the orifices 12 and 13 and thus fix the crossmember 6 on the front leg 4.
  • the device 8 comprises a first member 20 and a second member 21 provided to maintain the spacing between the crosspiece 6 and the front leg 4, and a third member 22 provided to cooperate with the first member 20 and the second member 21 to prevent the spacing between the crossbar 6 and the front foot 4.
  • the first member 20 comprises a counter-nut 24 adapted to be inserted into the orifice 12 in the direction of the front leg 4 and a blade 26 for holding the locknut 24 in the orifice 12.
  • the flange 10 comprises two through holes 28 provided to cooperate with the blade 26 for holding the first member 20 on the crosspiece 6.
  • the holding holes 28 are arranged on either side of the fixing orifice 12.
  • the counter-nut 24 has a bearing head 40 on the blade 26.
  • the head 40 has a disc shape of axis XX 'whose outside diameter is greater than the minimum diameter of the fixing orifice 12, such that the bearing head 40 can not pass through the fixing hole 12.
  • the counter-nut 24 has a tube 42 extending the head 40 to the end of the locknut 24, and intended to extend through the orifice 12.
  • the tube 42 is symmetrical with respect to a plane passing through the axis X-X '. It has two portions of opposed cylindrical surface 44 and two flats 46, extending longitudinally.
  • the orifice 12 has a shape complementary to that of the tube 42 so that it is adapted to block rotation of the tube 42 in the flange 10, due to the presence of the flats 46.
  • the edge of the orifice 12 has two portions of a circle corresponding to the surface portions 44 and two parallel rectilinear portions corresponding to the flats 46.
  • the length of the tube 42 is sufficient to pass right through the fixing orifice 12.
  • the locknut 24 has a cylindrical bore 50 of axis X-X 'and through the lock nut 24 from one side.
  • the bore 50 has an internal thread 52 whose pitch is on the left in the example illustrated in FIG.
  • the blade 26 comprises a support plate 56 extending transversely to the axis XX 'of the lock nut 24 and having an orifice 58 through which the lock nut 24 passes.
  • the head 40 forms a bearing shoulder on the plate 56
  • the plate 56 protrudes radially from the head 40 of the locknut 24 and has a bearing surface 59 on the surface 17 of the flange 10.
  • the plate 56 comprises two tabs 60 for clamping the nut 24 projecting radially inwardly of the orifice 58.
  • the tabs 60 are diametrically opposed and have parallel free edges.
  • the tabs 60 are adapted to tighten the locknut 24 by pressing on the two flats 46.
  • the minimum distance between the tabs 60 before assembly by insertion of the tube 42 between the tabs 60 is less than the minimum distance between the two flats 46.
  • the tabs 60 thus provide locking in rotation and sliding of the counter nut 24 relative to the blade 26.
  • the support plate 56 bears against the bearing surface of the head 40.
  • the blade 26 has two detent teeth 62 projecting along the axis X-X 'with respect to the plate 56, towards the flange 10.
  • the ratchet teeth 62 are adapted to snap into the holding holes 28 and thus ensure a retention of the locknut 24 on the flange 10 along the axis X-X '.
  • the second member 21 forms a nut having an external thread 64 complementary to the internal thread 52 of the lock nut 24.
  • the nut 21 comprises a bearing head 66 and a tubular body 68 extending the head 66.
  • the bearing head 66 has an outside diameter less than the minimum distance between the two flats 34, so that the nut 21 can pass through the orifice 12.
  • the nut 21 has a cylindrical bore 72 of axis XX 'passing through the nut 21 from one side to the other.
  • the bore 72 comprises an internal thread 74.
  • the bearing head 66 has a bearing surface 76 on the end of the lock nut 24, when the nut 21 is screwed down onto the lock nut 24.
  • the head 66 also has an opposite abutment surface 78 to the bearing surface 76.
  • the abutment surface 78 is adapted to bear on the facing surface 14 of the foot 4 and stop the travel of the nut 21 towards the foot 4.
  • the second thread 74 has a step to the right, that is to say a pitch made in a direction opposite to that of the first thread 64.
  • the third member 22 forms a clamping screw comprising a clamping head 82 adapted to cooperate with a tightening tool of the screw 22, a support washer 84 having a bearing surface 85 adapted to bear on the opposite surface 16 of the foot 4, and a rod 86 extending the washer 84 and comprising, on a distal portion of the rod 86, an external thread 88 complementary to the internal thread 74 of the nut 21.
  • the clamping screw 22 has, at the end of the rod 86 opposite to the clamping head 82, an elastomer brake 90 disposed on the external thread 88.
  • the elastomer brake 90 is adapted to block the rotation of the the screw 22 with respect to the nut 21 when the threads 74 and 88 are engaged, up to a predetermined value of the torque exerted between the clamping screw 22 and the nut 21.
  • the brake 90 is adapted to break and release the rotation of the clamping screw 22 relative to the nut 21.
  • the entire fixing device 8 is made of steel, with the exception of the brake 90.
  • the nut 21 is, in a first step (FIG. 1), screwed in firmly. on the counter-nut 24, so that the bearing head 66 of the nut 21 abuts against the end of the lock-nut 24.
  • the assembly thus constituted by the lock-nut 24, the blade 26 and the nut 21 is inserted from the side of the opposite surface 17 of the flange 10 into the fixing orifice 12.
  • the nut 21 and in particular its head 66 then passes through the fixing orifice 12, while the ratchet teeth 62 of the blade 26 of the lock nut 24 penetrate the holding holes 28 of the crosspiece 6.
  • the locknut 24 is to him received in the fixing hole 12.
  • the lock nut 24 and the nut 21 are then held on the cross member 6 independently.
  • the crosspiece of the dashboard 6 is arranged to align the orifice 13 with the axis X-X 'of the nut 21 and the locknut 24, as shown in FIG.
  • the clamping screw 22 is inserted into the hole 13 of the foot 4, so that the screw 22 passes through the front foot 4 from one side to the other.
  • the brake 90 then blocks the relative rotation between the screw 22 and the nut 21.
  • the screw 22 turned clockwise, the nut 21 is unscrewed from the locknut 24, until the abutment surface 78 of the bearing head 66 comes into abutment against the facing surface
  • the flats 46 cooperating with the orifice 12 having parallel edge portions immobilize the counter nut 24 in rotation about the axis X-X 'of its thread.
  • the blade 26 holds the locknut 24 axially relative to the flange 10, with a sufficient resistance to oppose the axial forces resulting from clamping operations.
  • the establishment of the fixing device is simple since the insertion of the lock nut 24 in the orifice 12 ensures the locking in rotation. In addition, this insertion allows the snap of the blade 26.
  • the device 8 is adaptable to any type of crossbar 6, including crosses 6 magnesium or aluminum on which a weld is difficult.
  • FIGS. 7 to 10 A variant of the fixing device is illustrated in FIGS. 7 to 10.
  • the numerical references to the similar elements are identical to those of FIGS. 1 to 6.
  • This variant of FIGS. 7 to 10 provides reinforced axial fixation of the first member 20 on the first component.
  • the first member 20 comprises two lugs 92 adapted to bear on the surface 15 of the flange 10, on the opposite side to the bearing head 40.
  • Each lug 92 protrudes radially from the tubular body 68 being spaced from the bearing head 40.
  • the lugs 92 are identical and diametrically opposed.
  • the lugs 92 are integral with the tubular body 68 of the nut and, for example, obtained by machining.
  • the opening 12 comprises a notch 94 for the passage of each lug 92.
  • the first member 20 is oriented around the axis X-X 'in an insertion position in which the pins 92 are aligned with the notches 94 ( Figure 9), and a locked position ( Figure 10), in which the lugs 92 are offset relative to the notches 94, and axially retain the first member 20 against the flange 10.
  • the axial distance between the lugs 92 and the blade 26 in its position of attachment against the head 40 is substantially equal to the thickness of the flange 10 taken at the edge of the orifice 12, so that the head 40, the blade 26 and the lugs 92 ensure axial immobilization of the first member 20 in the locked position (FIG. 10), obtained by rotation in the screwing direction of the screw 82 from the insertion position illustrated in FIG. 9.
  • the angle of rotation between the two positions of FIGS. 9 and 10 is for example approximately equal to 30 °.
  • the fixing device comprises means for immobilizing in rotation the first member in its locked position (FIG. 10) against a torque exerted during the screwing of the screw 22.
  • the tubular body 68 comprises two stop flats 95 adapted to cooperate with rectilinear edges 96 of the opening 12 to block the rotation of the first member 20 during screwing of the screw 22.
  • the flats 95 extend the flats 46 for fixing the blade 26.
  • the flats 95 and 46 form an angle between them equal to the angle of rotation between the insertion position and the locked position.
  • Flats 46 are, in the insertion position (FIG. 9), facing two respective recesses 98 formed in the flange 10 so as to allow the rotation of the tubular body 68 in the orifice 12.
  • each opening 28 comprises a wide portion 104 of input, adapted to allow the insertion and latching of the tabs 62 in the insertion position of the first member 20, and a narrow portion 106 , receiving the corresponding lug 62 in the locked position of the first member 20.
  • the narrow portions 106 prevent the output of the lugs 62 safely.
  • the head 40 has two drive flats 108 to allow its driving in rotation by means of a suitable tool, such as a wrench, to move the first member 20 from its insertion position to its locked position.
  • the operator For the establishment of the fixing device 8, the operator assembles the nut 21, the blade 26 and the locknut 24 and then inserts the assembly thus formed in the orifice 12 by aligning the lugs 92 with the notches 94 It then rotates the assembly by means of a clamping tool cooperating with the flats 108 provided on the head 40, into the locked position of FIG. 10 and FIGS. 7 and 8.
  • the other steps are then identical to those of the embodiment of Figures 1 to 6, the flats 95 and the edges 96 ensuring the rotational locking of the first member 20 during screwing.
  • the attachment of the flange 10 with the foot 11 is secure, and the spacing between the flange 10 and the foot 11 is maintained safely, even in case of shock or vibration along the axis X-X '.
  • the lugs 92 provide immobilization in safe translation of the first member 20 on the first component 6.
  • the second member 21 has a floor internal bore, having a large diameter section 110 carrying the internal screw thread 64 of the first member 20, a small diameter section 112 carrying an internal thread 74 complementary to that of the third member 22 formed by the screw.
  • the first member 20 comprises a bore 114 carrying an internal thread 116 complementary to the thread 88 of the screw 22.
  • the screw 22 progresses in the second member 21 and can engage in the internal thread 110 of the first member 20, so that the screw 22 is simultaneously clamped in the first and second members 20, 21.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Manufacturing & Machinery (AREA)
  • Body Structure For Vehicles (AREA)
  • Connection Of Plates (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention relates to a sub-assembly (2) that comprises a device (8) for attaching a first component (6) on a second component (4), including first, second and third threaded members (20, 21, 22). The first and second threaded members have complementary threads (52, 64) including an axis and a first pitch. The second and third members have complementary threads (74, 88) including said axis and a second pitch opposed to the first one, and having chamfer (90) adapted so as to break beyond a predetermined torque. The rotation of the third member in the second screwing direction results in the unscrewing of the second member until the predetermined torque is reached, an additional rotation resulting in the screwing of the third member onto the second member. The first component and the first member have complementary features for blocking the rotation of the first member relative to the first component about the axis of the threads.

Description

Sous-ensemble de véhicule automobile Subassembly of a motor vehicle
La présente invention concerne un sous-ensemble de véhicule automobile, du type comprenant un premier composant, un deuxième composant, et un dispositif de fixation du premier composant sur le deuxième composant. Lors de la fixation d'une traverse de planche de bord sur les pieds avant d'une caisse de véhicule automobile, il existe un jeu entre certains points de fixation correspondants de la caisse et de la traverse de planche de bord.The present invention relates to a motor vehicle subassembly, of the type comprising a first component, a second component, and a device for fixing the first component to the second component. When attaching a dashboard cross member on the front legs of a motor vehicle body, there is a clearance between certain corresponding attachment points of the body and the dashboard cross member.
Il est alors souhaitable de prévoir des moyens de fixation permettant la fixation de la traverse de planche de bord sur la caisse avec maintien de l'espacement entre les points de fixation de la traverse de planche de bord et de la caisse.It is then desirable to provide fastening means for fixing the dashboard cross member on the box with maintaining the spacing between the fastening points of the dashboard cross member and the body.
Un but de l'invention est de fournir un sous-ensemble de véhicule automobile dans lequel les moyens de fixation à rattrapage de jeu puissent être mis en place simplement.An object of the invention is to provide a subset of a motor vehicle in which the catch-up fixing means can be set up simply.
A cet effet, l'invention a pour objet un sous-ensemble du type précité, caractérisé en ce que le dispositif de fixation comprend un premier organe fileté et un deuxième organe fileté et un troisième organe fileté, dans lequel le premier organe et le deuxième organe possèdent des filetages complémentaires prévus avec un axe et un premier sens de vissage, et le deuxième et le troisième organes possèdent des filetages complémentaires prévus avec ledit axe et un deuxième sens de vissage opposé au premier sens de vissage, l'un des filetages complémentaires du deuxième organe et du troisième organe possédant un élément de blocage en rotation prévu pour rompre au-delà d'un couple déterminé, de sorte que les filets complémentaires étant en prise, la rotation du troisième organe par rapport au premier organe dans le deuxième sens de vissage entraîne la rotation et le dévissage du deuxième organe par rapport au premier organe jusqu'à atteindre le couple déterminé, une rotation supplémentaire provoquant le vissage du troisième organe sur le deuxième organe, dans lequel le premier composant et le premier organe possèdent des reliefs complémentaires de blocage en rotation du premier organe par rapport au premier composant autour de l'axe des filetages.For this purpose, the subject of the invention is a subassembly of the aforementioned type, characterized in that the fixing device comprises a first threaded member and a second threaded member and a third threaded member, in which the first member and the second member member have complementary threads provided with an axis and a first direction of screwing, and the second and third members have complementary threads provided with said axis and a second screwing direction opposite to the first direction of screwing, one of the complementary threads the second member and the third member having a rotational locking member adapted to break beyond a given torque, so that the complementary threads are engaged, the rotation of the third member relative to the first member in the second direction; screwing mechanism causes the second member to rotate and unscrew relative to the first member terminated, an additional rotation causing the screwing of the third member on the second member, wherein the first component and the first member have complementary rotational locking reliefs of the first member relative to the first component around the axis of the threads.
Suivant des modes particuliers de réalisation, le sous-ensemble comprend l'une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou suivant toutes les combinaisons techniquement possibles : - lesdits reliefs complémentaires de blocage en rotation comprennent un méplat prévu sur le premier organe,According to particular embodiments, the subassembly comprises one or more of the following characteristics, taken in isolation or in any technically possible combination: said complementary rotational locking reliefs comprise a flat part provided on the first member,
- le premier organe comprend des moyens d'encliquetage pour fixer axialement le premier organe sur le premier composant, - les moyens d'encliquetage comprennent une lame adaptée pour s'encliqueter dans au moins un trou de maintien du premier composant,the first member comprises latching means for axially fixing the first member to the first component; the latching means comprise a blade adapted to snap into at least one holding hole of the first component,
- le premier organe comprend un élément fileté, la lame étant rapportée et fixée sur l'élément fileté,the first member comprises a threaded element, the blade being attached and fastened to the threaded element,
- la lame est bloquée en rotation et en translation sur l'élément fileté, - le premier organe est adapté pour être inséré dans un orifice traversant de fixation du premier composant, le deuxième organe étant adapté pour être inséré à travers ledit orifice traversant du premier composant,- The blade is locked in rotation and in translation on the threaded element, - the first member is adapted to be inserted into a through hole for fixing the first component, the second member being adapted to be inserted through said through hole of the first component,
- le deuxième organe comprend une tête d'appui sur laquelle est prévue une surface de butée adaptée pour prendre appui contre le deuxième composant, et présentant une surface opposée adaptée pour prendre appui sur le premier organe,the second member comprises a bearing head on which is provided an abutment surface adapted to bear against the second component, and having an opposite surface adapted to bear on the first member,
- ledit élément de blocage en rotation est un frein élastomère,said rotational locking element is an elastomeric brake,
- le premier organe comprend un premier écrou possédant un filetage intérieur, le deuxième organe est un écrou possédant un filetage extérieur complémentaire du filetage intérieur du premier écrou, - le premier organe possède un filetage additionnel complémentaire du filetage du troisième organe, le filetage du troisième organe étant apte à s'engager dans le filetage additionnel après rupture de l'élément de blocage en rotation.the first member comprises a first nut having an internal thread, the second member is a nut having an external thread complementary to the internal thread of the first nut, the first member has an additional thread complementary to the thread of the third member, the thread of the third member. member being adapted to engage in the additional thread after rupture of the locking element in rotation.
- l'un des premier composant et deuxième composant est une traverse de planche de bord, et l'autre est un pied avant de caisse de véhicule automobile, - le premier organe est mobile en rotation entre une position d'insertion dans l'orifice du premier composant suivant un axe d'insertion et une position verrouillée dans laquelle il est immobile en translation suivant l'axe d'insertion,one of the first component and second component is a cross member of the dashboard, and the other is a front foot of a motor vehicle body, the first member is movable in rotation between an insertion position in the orifice the first component following an insertion axis and a locked position in which it is stationary in translation along the axis of insertion,
- le premier organe comprend un premier élément d'appui sur une première face du premier composant, et au moins un deuxième élément d'appui sur une deuxième face opposée du premier composant, ledit premier élément d'appui et ledit deuxième élément d'appui étant propres à coopérer et ainsi à immobiliser en translation le premier organe suivant l'axe d'insertion lorsque le premier organe est dans sa position verrouillée, - ledit deuxième élément d'appui du premier organe est un ergot en saillie radiale,the first member comprises a first support element on a first face of the first component, and at least a second support element on a second opposite face of the first component, said first support element and said second support element. being able to cooperate and thus immobilize in translation the first member along the axis of insertion when the first member is in its locked position, said second support member of the first member is a radially projecting lug,
- lesdits reliefs complémentaires de blocage en rotation sont propres à coopérer pour bloquer le premier organe en position verrouillée à rencontre d'un couple résultant du vissage du troisième organe dans ledit deuxième sens de vissage,said complementary rotational locking reliefs are adapted to cooperate in locking the first member in the locked position against a torque resulting from screwing the third member into said second screwing direction,
- le trou de maintien comprend une portion large d'entrée de la lame et dans laquelle la lame est logée lorsque le premier organe est dans ladite position d'insertion, et une portion étroite de maintien de la lame, prolongeant la portion d'insertion et dans laquelle la lame est logée lorsque le premier organe est dans ladite position verrouillée. L'invention et ses avantages seront mieux compris à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple, et faite en se référant aux dessins annexés, sur lesquels :the holding hole comprises a wide input portion of the blade and in which the blade is accommodated when the first member is in said insertion position, and a narrow portion for holding the blade, extending the insertion portion; and wherein the blade is housed when the first member is in said locked position. The invention and its advantages will be better understood on reading the description which follows, given solely by way of example, and with reference to the appended drawings, in which:
- les figures 1 à 3 sont des vues schématiques en coupe d'un sous-ensemble selon l'invention, formé par une traverse de planche de bord, un pied avant et un dispositif de fixation, et illustrent les différentes configurations du dispositif de fixation au cours de son serrage;- Figures 1 to 3 are schematic sectional views of a subassembly according to the invention, formed by a dashboard cross, a front foot and a fixing device, and illustrate the various configurations of the fastening device during its tightening;
- la figure 4 est une vue schématique de côté d'un flasque de la traverse de planche de bord ;- Figure 4 is a schematic side view of a flange of the dashboard crossmember;
- la figure 5 est une vue schématique de face d'un contre-écrou du dispositif de fixation ;- Figure 5 is a schematic front view of a lock nut of the fastener;
- la figure 6 est une vue schématique de face d'une lame du dispositif de fixation;- Figure 6 is a schematic front view of a blade of the fastener;
- les figures 7 et 8 sont des vues analogues à celles des figures 1 et 3, illustrant une variante du dispositif de fixation ;- Figures 7 and 8 are views similar to those of Figures 1 and 3, illustrating a variant of the fixing device;
- les figures 9 et 10 sont des vues en coupe du dispositif de fixation de la figure 7, illustrant des étapes de montage de ce dispositif de fixation ; etFIGS. 9 and 10 are cross-sectional views of the fixing device of FIG. 7, illustrating steps of mounting of this fixing device; and
- la figure 11 est une vue en coupe d'une autre variante du dispositif de fixation. Tel que représenté sur la figure 1 , le sous-ensemble 2 de véhicule automobile conforme à l'invention comprend un pied avant 4 de caisse de véhicule automobile, une traverse de planche de bord 6 et un dispositif de fixation 8 de la traverse 6 sur le pied avant 4.- Figure 11 is a sectional view of another variant of the fastener. As shown in Figure 1, the subassembly 2 of a motor vehicle according to the invention comprises a front foot 4 of a motor vehicle body, a dashboard cross member 6 and a fastener 8 of the cross member 6 on the front foot 4.
Les pieds avant de caisse sont généralement appelés montant "A" de la caisse.The front feet of the crate are usually called the "A" amount of the crate.
La traverse 6 est destinée à s'étendre transversalement entre les pieds avant, et à supporter la planche de bord, et des équipements associés, tel qu'une colonne de direction, un autoradio .... La traverse 6 comprend une poutre 9 prévue pour s'étendre transversalement, et un flasque 10 fixé à une extrémité de la poutre 9 en vue de sa fixation sur le pied avant 4.The crossbar 6 is intended to extend transversely between the front legs, and to support the dashboard, and associated equipment, such as a steering column, a car radio .... The crosspiece 6 comprises a beam 9 provided to extend transversely, and a flange 10 attached to one end of the beam 9 for attachment to the front foot 4.
Le pied avant 4 comprend une paroi double 11 s'étendant parallèlement au flas- que 10.The front foot 4 comprises a double wall 11 extending parallel to the flange 10.
La paroi double 11 et le flasque 10 présentent respectivement deux surfaces en regard 14, 15, et deux surfaces opposées 16, 17.The double wall 11 and the flange 10 respectively have two facing surfaces 14, 15, and two opposite surfaces 16, 17.
Le flasque 10 et la paroi double 11 comprennent des orifices de fixation respectivement 12, 13 destinés à être alignés suivant un axe X-X'. Chaque orifice 12, 13 est traversant.The flange 10 and the double wall 11 comprise fastening orifices respectively 12, 13 intended to be aligned along an axis X-X '. Each orifice 12, 13 is through.
Le dispositif de fixation 8 est adapté pour traverser les orifices 12 et 13 et ainsi fixer la traverse 6 sur le pied avant 4.The fastening device 8 is adapted to pass through the orifices 12 and 13 and thus fix the crossmember 6 on the front leg 4.
A cet effet, le dispositif 8 comprend un premier organe 20 et un deuxième organe 21 prévus pour maintenir l'écartement entre la traverse 6 et le pied avant 4, et un troi- sième organe 22 prévu pour coopérer avec le premier organe 20 et le deuxième organe 21 pour empêcher l'écartement entre la traverse 6 et le pied avant 4.For this purpose, the device 8 comprises a first member 20 and a second member 21 provided to maintain the spacing between the crosspiece 6 and the front leg 4, and a third member 22 provided to cooperate with the first member 20 and the second member 21 to prevent the spacing between the crossbar 6 and the front foot 4.
Le premier organe 20 comprend un contre-écrou 24 adapté pour être inséré dans l'orifice 12 en direction du pied avant 4 et une lame 26 de maintien du contre-écrou 24 dans l'orifice 12. La flasque 10 comprend deux trous traversants 28 prévus pour coopérer avec la lame 26 pour le maintien du premier organe 20 sur la traverse 6. Les trous de maintien 28 sont disposés de part et d'autre de l'orifice de fixation 12.The first member 20 comprises a counter-nut 24 adapted to be inserted into the orifice 12 in the direction of the front leg 4 and a blade 26 for holding the locknut 24 in the orifice 12. The flange 10 comprises two through holes 28 provided to cooperate with the blade 26 for holding the first member 20 on the crosspiece 6. The holding holes 28 are arranged on either side of the fixing orifice 12.
Le contre-écrou 24 possède une tête 40 d'appui sur la lame 26. La tête 40 a une forme de disque d'axe X-X' dont le diamètre externe est supérieur au diamètre mini- mum de l'orifice de fixation 12, de telle sorte que la tête d'appui 40 ne peut pas traverser l'orifice de fixation 12.The counter-nut 24 has a bearing head 40 on the blade 26. The head 40 has a disc shape of axis XX 'whose outside diameter is greater than the minimum diameter of the fixing orifice 12, such that the bearing head 40 can not pass through the fixing hole 12.
Le contre-écrou 24 possède un tube 42 prolongeant la tête 40 jusqu'à l'extrémité du contre-écrou 24, et destiné à s'étendre au travers de l'orifice 12.The counter-nut 24 has a tube 42 extending the head 40 to the end of the locknut 24, and intended to extend through the orifice 12.
Tel que représenté sur la figure 5, le tube 42 est symétrique par rapport à un plan passant par l'axe X-X'. Il possède deux portions de surface cylindrique 44 opposées et deux méplats 46, s'étendant longitudinalement.As shown in Figure 5, the tube 42 is symmetrical with respect to a plane passing through the axis X-X '. It has two portions of opposed cylindrical surface 44 and two flats 46, extending longitudinally.
Tel que représenté sur la figure 4, l'orifice 12 a une forme complémentaire de celle du tube 42 de telle sorte qu'elle est adaptée au blocage en rotation du tube 42 dans le flasque 10, du fait de la présence des méplats 46. Ainsi, le bord de l'orifice 12 possède deux portions de cercle correspondants aux portions de surface 44 et deux portions rectilignes parallèles, correspondants aux méplats 46.As shown in FIG. 4, the orifice 12 has a shape complementary to that of the tube 42 so that it is adapted to block rotation of the tube 42 in the flange 10, due to the presence of the flats 46. Thus, the edge of the orifice 12 has two portions of a circle corresponding to the surface portions 44 and two parallel rectilinear portions corresponding to the flats 46.
La longueur du tube 42 est suffisante pour traverser de part en part l'orifice de fixation 12. Le contre-écrou 24 possède un alésage cylindrique 50 d'axe X-X' et traversant le contre-écrou 24 de part en part. L'alésage 50 possède un filetage intérieur 52 dont le pas est à gauche dans l'exemple illustré sur la figure 1.The length of the tube 42 is sufficient to pass right through the fixing orifice 12. The locknut 24 has a cylindrical bore 50 of axis X-X 'and through the lock nut 24 from one side. The bore 50 has an internal thread 52 whose pitch is on the left in the example illustrated in FIG.
La lame 26 comprend une plaque de support 56 s'étendant transversalement à l'axe X-X' du contre-écrou 24 et possédant un orifice 58 traversé par le contre-écrou 24. La tête 40 forme un épaulement d'appui sur la plaque 56. La plaque 56 fait saillie radia- lement par rapport à la tête 40 du contre-écrou 24 et présente une surface d'appui 59 sur la surface 17 du flasque 10.The blade 26 comprises a support plate 56 extending transversely to the axis XX 'of the lock nut 24 and having an orifice 58 through which the lock nut 24 passes. The head 40 forms a bearing shoulder on the plate 56 The plate 56 protrudes radially from the head 40 of the locknut 24 and has a bearing surface 59 on the surface 17 of the flange 10.
Tel que représenté sur la figure 6, la plaque 56 comprend deux pattes 60 de serrage du contre-écrou 24 faisant saillie radialement vers l'intérieur de l'orifice 58. Les pattes 60 sont diamétralement opposées et possèdent des bords libres parallèles.As shown in Figure 6, the plate 56 comprises two tabs 60 for clamping the nut 24 projecting radially inwardly of the orifice 58. The tabs 60 are diametrically opposed and have parallel free edges.
Les pattes 60 sont adaptées pour serrer le contre-écrou 24 en s'appuyant sur les deux méplats 46. A cet effet, la distance minimum entre les pattes 60 avant assemblage par insertion du tube 42 entre les pattes 60 est inférieure à la distance minimum entre les deux méplats 46. Les pattes 60 assurent ainsi un blocage en rotation et en coulissement du contre- écrou 24 par rapport à la lame 26.The tabs 60 are adapted to tighten the locknut 24 by pressing on the two flats 46. For this purpose, the minimum distance between the tabs 60 before assembly by insertion of the tube 42 between the tabs 60 is less than the minimum distance between the two flats 46. The tabs 60 thus provide locking in rotation and sliding of the counter nut 24 relative to the blade 26.
Sur la figure 1 , la plaque de support 56 est en appui contre la surface d'appui de la tête 40.In FIG. 1, the support plate 56 bears against the bearing surface of the head 40.
La lame 26 possède deux dents d'encliquetage 62 faisant saillie suivant l'axe X- X' par rapport à la plaque 56, vers le flasque 10. Les dents d'encliquetage 62 sont adaptées pour s'encliqueter dans les trous de maintien 28 et assurer ainsi un maintien du contre-écrou 24 sur le flasque 10 suivant l'axe X-X'.The blade 26 has two detent teeth 62 projecting along the axis X-X 'with respect to the plate 56, towards the flange 10. The ratchet teeth 62 are adapted to snap into the holding holes 28 and thus ensure a retention of the locknut 24 on the flange 10 along the axis X-X '.
Comme illustré sur les figures 1 à 3, le deuxième organe 21 forme un écrou possédant un filetage extérieur 64 complémentaire du filetage intérieur 52 du contre-écrou 24.As illustrated in Figures 1 to 3, the second member 21 forms a nut having an external thread 64 complementary to the internal thread 52 of the lock nut 24.
L'écrou 21 comprend une tête d'appui 66 et un corps tubulaire 68 prolongeant la tête 66.The nut 21 comprises a bearing head 66 and a tubular body 68 extending the head 66.
La tête d'appui 66 présente un diamètre extérieur inférieur à la distance minimum entre les deux méplats 34, de sorte que l'écrou 21 peut traverser l'orifice 12. L'écrou 21 possède un alésage cylindrique 72 d'axe X-X' traversant l'écrou 21 de part en part. L'alésage 72 comprend un filetage intérieur 74.The bearing head 66 has an outside diameter less than the minimum distance between the two flats 34, so that the nut 21 can pass through the orifice 12. The nut 21 has a cylindrical bore 72 of axis XX 'passing through the nut 21 from one side to the other. The bore 72 comprises an internal thread 74.
La tête d'appui 66 présente une surface 76 d'appui sur l'extrémité du contre- écrou 24, lorsque l'écrou 21 est vissé à fond sur le contre-écrou 24. La tête 66 présente également une surface de butée 78 opposée à la surface d'appui 76. Le surface de butée 78 est adaptée pour prendre appui sur la surface en regard 14 du pied 4 et arrêter la course de l'écrou 21 vers le pied 4.The bearing head 66 has a bearing surface 76 on the end of the lock nut 24, when the nut 21 is screwed down onto the lock nut 24. The head 66 also has an opposite abutment surface 78 to the bearing surface 76. The abutment surface 78 is adapted to bear on the facing surface 14 of the foot 4 and stop the travel of the nut 21 towards the foot 4.
Le deuxième filetage 74 a un pas à droite, c'est-à-dire un pas réalisé dans un sens opposé à celui du premier filetage 64. Le troisième organe 22 forme une vis de serrage comprenant une tête de serrage 82 adaptée pour coopérer avec un outil de serrage de la vis 22, une rondelle d'appui 84 présentant une surface d'appui 85 adaptée pour prendre appui sur la surface opposée 16 du pied 4, et une tige 86 prolongeant la rondelle 84 et comprenant, sur une portion distale de la tige 86, un filetage extérieur 88 complémentaire du filetage intérieur 74 de l'écrou 21.The second thread 74 has a step to the right, that is to say a pitch made in a direction opposite to that of the first thread 64. The third member 22 forms a clamping screw comprising a clamping head 82 adapted to cooperate with a tightening tool of the screw 22, a support washer 84 having a bearing surface 85 adapted to bear on the opposite surface 16 of the foot 4, and a rod 86 extending the washer 84 and comprising, on a distal portion of the rod 86, an external thread 88 complementary to the internal thread 74 of the nut 21.
En outre, la vis de serrage 22 possède, au niveau de l'extrémité de la tige 86 opposée à la tête de serrage 82, un frein élastomère 90 disposé sur le filetage extérieur 88. Le frein élastomère 90 est adapté pour bloquer la rotation de la vis 22 par rapport à l'écrou 21 lorsque les filetages 74 et 88 sont engagés, jusqu'à une valeur prédétermi- née du couple s'exerçant entre la vis de serrage 22 et l'écrou 21. Lorsque cette valeur prédéterminée du couple est dépassée, le frein 90 est adapté pour se rompre et libérer la rotation de la vis de serrage 22 par rapport à l'écrou 21.In addition, the clamping screw 22 has, at the end of the rod 86 opposite to the clamping head 82, an elastomer brake 90 disposed on the external thread 88. The elastomer brake 90 is adapted to block the rotation of the the screw 22 with respect to the nut 21 when the threads 74 and 88 are engaged, up to a predetermined value of the torque exerted between the clamping screw 22 and the nut 21. When this predetermined value of the torque is exceeded, the brake 90 is adapted to break and release the rotation of the clamping screw 22 relative to the nut 21.
L'ensemble du dispositif de fixation 8 est réalisé en acier, à l'exception du frein 90. Lors de l'utilisation du dispositif de fixation 8, l'écrou 21 est, dans un premier temps (figure 1 ), vissé à fond sur le contre-écrou 24, de telle sorte que la tête d'appui 66 de l'écrou 21 est en butée contre l'extrémité du contre-écrou 24.The entire fixing device 8 is made of steel, with the exception of the brake 90. When using the fastening device 8, the nut 21 is, in a first step (FIG. 1), screwed in firmly. on the counter-nut 24, so that the bearing head 66 of the nut 21 abuts against the end of the lock-nut 24.
Dans un deuxième temps, l'ensemble ainsi constitué par le contre-écrou 24, la lame 26 et l'écrou 21 est inséré depuis le côté de la surface opposée 17 du flasque 10 dans l'orifice de fixation 12. L'écrou 21 et notamment sa tête 66, traverse alors l'orifice de fixation 12, tandis que les dents d'encliquetage 62 de la lame 26 du contre-écrou 24 pénètrent les trous de maintien 28 de la traverse 6. Le contre-écrou 24 est quant à lui reçu dans l'orifice de fixation 12. Le contre-écrou 24 et l'écrou 21 sont alors maintenus sur la traverse 6 de façon autonome.In a second step, the assembly thus constituted by the lock-nut 24, the blade 26 and the nut 21 is inserted from the side of the opposite surface 17 of the flange 10 into the fixing orifice 12. The nut 21 and in particular its head 66, then passes through the fixing orifice 12, while the ratchet teeth 62 of the blade 26 of the lock nut 24 penetrate the holding holes 28 of the crosspiece 6. The locknut 24 is to him received in the fixing hole 12. The lock nut 24 and the nut 21 are then held on the cross member 6 independently.
Dans un troisième temps, la traverse de la planche de bord 6 est disposée de façon à aligner l'orifice 13 avec l'axe X-X' de l'écrou 21 et du contre-écrou 24, comme représenté à la figure 1.In a third step, the crosspiece of the dashboard 6 is arranged to align the orifice 13 with the axis X-X 'of the nut 21 and the locknut 24, as shown in FIG.
Dans un quatrième temps, la vis de serrage 22 est insérée dans l'orifice 13 du pied 4, de telle sorte que la vis 22 traverse le pied avant 4 de part en part.In a fourth step, the clamping screw 22 is inserted into the hole 13 of the foot 4, so that the screw 22 passes through the front foot 4 from one side to the other.
Dans un cinquième temps (figure 2), la vis 22 pénètre l'alésage 72 de l'écrou 21.In a fifth step (Figure 2), the screw 22 penetrates the bore 72 of the nut 21.
Le frein 90 bloque alors la rotation relative entre la vis 22 et l'écrou 21. La vis 22 étant tournée dans le sens horaire, l'écrou 21 est dévissé du contre-écrou 24, jusqu'à ce que la surface de butée 78 de la tête d'appui 66 vienne en butée contre la surface en regardThe brake 90 then blocks the relative rotation between the screw 22 and the nut 21. With the screw 22 turned clockwise, the nut 21 is unscrewed from the locknut 24, until the abutment surface 78 of the bearing head 66 comes into abutment against the facing surface
14 du pied 4.14 of the foot 4.
Une fois l'écrou 21 en butée contre le pied avant 4, le couple exercé par la vis 22 nécessaire au déplacement de l'écrou 21 dépasse la valeur prédéterminée à laquelle le frein 90 rompt, et les frottements générés par le frein 90 sont fortement réduits, de telle sorte que la rotation de la vis 22 par rapport à l'écrou 21 est libérée et la vis 22 est vissée dans l'écrou 21.Once the nut 21 abuts against the front foot 4, the torque exerted by the screw 22 required for the displacement of the nut 21 exceeds the predetermined value at which the brake 90 breaks, and the friction generated by the brake 90 are strongly reduced, so that the rotation of the screw 22 relative to the nut 21 is released and the screw 22 is screwed into the nut 21.
Le vissage de la vis 22 (figure 3) continue jusqu'à ce que la rondelle 84 de la vis 18 vienne en butée contre la surface opposée 16 du pied 4 et serre ainsi le pied avant 4 avec la traverse 6.The screwing of the screw 22 (FIG. 3) continues until the washer 84 of the screw 18 comes into abutment against the opposite surface 16 of the foot 4 and thus closes the front foot 4 with the crosspiece 6.
La fixation de la traverse 6 avec le pied 4 est alors réalisée.The fixing of the crossbar 6 with the foot 4 is then performed.
Les méplats 46 coopérant avec l'orifice 12 possédant des portions de bord parallèles, immobilisent le contre-écrou 24 en rotation autour de l'axe X-X' de son filetage.The flats 46 cooperating with the orifice 12 having parallel edge portions immobilize the counter nut 24 in rotation about the axis X-X 'of its thread.
La lame 26 maintient le contre-écrou 24 axialement par rapport au flasque 10, avec une résistance suffisante pour s'opposer aux efforts axiaux résultant des opérations de serrage.The blade 26 holds the locknut 24 axially relative to the flange 10, with a sufficient resistance to oppose the axial forces resulting from clamping operations.
La mise en place du dispositif de fixation est simple puisque l'insertion du contre- écrou 24 dans l'orifice 12 assure le blocage en rotation. En outre, cette insertion permet l'encliquetage de la lame 26. Ainsi, le dispositif 8 est adaptable sur tout type de traverse 6, y compris les traverses 6 en magnésium ou en aluminium sur lesquelles une soudure est difficile.The establishment of the fixing device is simple since the insertion of the lock nut 24 in the orifice 12 ensures the locking in rotation. In addition, this insertion allows the snap of the blade 26. Thus, the device 8 is adaptable to any type of crossbar 6, including crosses 6 magnesium or aluminum on which a weld is difficult.
Enfin, l'écrou 21 étant adapté pour être inséré à travers l'orifice 12, cette fixation est encore facilitée puisqu'il n'est pas nécessaire de glisser l'écrou 21 entre le flasque 10 et le pied 4, car l'écrou 21 est inséré avec le contre-écrou 24 à travers l'orifice 12. Une variante du dispositif de fixation est illustrée sur les figures 7 à 10. Les références numériques aux éléments semblables sont identiques à celles des figures 1 à 6. Cette variante des figures 7 à 10 assure une fixation axiale renforcée du premier organe 20 sur le premier composant. A cet effet, le premier organe 20 comprend deux ergots 92 propres à prendre appui sur la surface 15 du flasque 10, du côté opposé à la tête d'appui 40.Finally, the nut 21 being adapted to be inserted through the orifice 12, this attachment is further facilitated since it is not necessary to slide the nut 21 between the flange 10 and the foot 4, because the nut 21 is inserted with the lock nut 24 through the orifice 12. A variant of the fixing device is illustrated in FIGS. 7 to 10. The numerical references to the similar elements are identical to those of FIGS. 1 to 6. This variant of FIGS. 7 to 10 provides reinforced axial fixation of the first member 20 on the first component. For this purpose, the first member 20 comprises two lugs 92 adapted to bear on the surface 15 of the flange 10, on the opposite side to the bearing head 40.
Chaque ergot 92 fait saillie radialement à partir du corps tubulaire 68 en étant espacé de la tête d'appui 40. Les ergots 92 sont identiques et diamétralement opposés. Les ergots 92 sont venus de matière avec le corps tubulaire 68 de l'écrou et par exem- pie obtenus par usinage.Each lug 92 protrudes radially from the tubular body 68 being spaced from the bearing head 40. The lugs 92 are identical and diametrically opposed. The lugs 92 are integral with the tubular body 68 of the nut and, for example, obtained by machining.
Comme illustré sur les figures 9 et 10, l'ouverture 12 comprend une encoche 94 pour le passage de chaque ergot 92. Le premier organe 20 s'oriente autour de l'axe X- X' dans une position d'insertion dans laquelle les ergots 92 sont alignés avec les encoches 94 (figure 9), et une position verrouillée (figure 10), dans laquelle les ergots 92 sont décalés par rapport aux encoches 94, et retiennent axialement le premier organe 20 contre le flasque 10.As illustrated in FIGS. 9 and 10, the opening 12 comprises a notch 94 for the passage of each lug 92. The first member 20 is oriented around the axis X-X 'in an insertion position in which the pins 92 are aligned with the notches 94 (Figure 9), and a locked position (Figure 10), in which the lugs 92 are offset relative to the notches 94, and axially retain the first member 20 against the flange 10.
La distance axiale entre les ergots 92 et la lame 26 dans sa position de fixation contre la tête 40, est sensiblement égale à l'épaisseur du flasque 10 prise au niveau du bord de l'orifice 12, de telle sorte que la tête 40, la lame 26 et les ergots 92 assurent une immobilisation axiale du premier organe 20 dans la position verrouillée (figure 10), obtenue par rotation dans le sens de vissage de la vis 82 à partir de la position d'insertion illustrée sur la figure 9.The axial distance between the lugs 92 and the blade 26 in its position of attachment against the head 40, is substantially equal to the thickness of the flange 10 taken at the edge of the orifice 12, so that the head 40, the blade 26 and the lugs 92 ensure axial immobilization of the first member 20 in the locked position (FIG. 10), obtained by rotation in the screwing direction of the screw 82 from the insertion position illustrated in FIG. 9.
L'angle de rotation entre les deux positions des figures 9 et 10 est par exemple environ égal à 30°. Le dispositif de fixation comprend des moyens de blocage en rotation du premier organe dans sa position verrouillée (figure 10) à rencontre d'un couple exercé lors du vissage de la vis 22.The angle of rotation between the two positions of FIGS. 9 and 10 is for example approximately equal to 30 °. The fixing device comprises means for immobilizing in rotation the first member in its locked position (FIG. 10) against a torque exerted during the screwing of the screw 22.
A cet effet, le corps tubulaire 68 comprend deux méplats de butée 95 propres à coopérer avec des bords rectilignes 96 de l'ouverture 12 pour bloquer la rotation du premier organe 20 lors du vissage de la vis 22.For this purpose, the tubular body 68 comprises two stop flats 95 adapted to cooperate with rectilinear edges 96 of the opening 12 to block the rotation of the first member 20 during screwing of the screw 22.
Les méplats 95 prolongent les méplats 46 de fixation de la lame 26. Les méplats 95 et 46 forment un angle entre eux égal à l'angle de rotation entre la position d'insertion et la position verrouillée. Les méplats 46 sont, dans la position d'insertion (figure 9), en regard de deux évidements respectifs 98 ménagés dans le flasque 10 de manière à permettre la rotation du corps tubulaire 68 dans l'orifice 12.The flats 95 extend the flats 46 for fixing the blade 26. The flats 95 and 46 form an angle between them equal to the angle of rotation between the insertion position and the locked position. Flats 46 are, in the insertion position (FIG. 9), facing two respective recesses 98 formed in the flange 10 so as to allow the rotation of the tubular body 68 in the orifice 12.
Les ouvertures 28 de maintien s'étendent sur un secteur angulaire pour permettre le déplacement des pattes 62 lors de la rotation du premier organe 20 entre sa posi- tion d'insertion et sa position verrouillée. Pour faciliter le montage et améliorer le maintien, chaque ouverture 28 comprend une portion large 104 d'entrée, propre à permettre l'insertion et l'encliquetage des pattes 62 dans la position d'insertion du premier organe 20, et une portion étroite 106, de réception de la patte 62 correspondante dans la position verrouillée du premier organe 20. Les portions étroites 106 empêchent la sortie des pattes 62 de manière sûre.The holding apertures 28 extend over an angular sector to allow the tabs 62 to move as the first member 20 rotates between its insertion position and its locked position. To facilitate assembly and improve the maintenance, each opening 28 comprises a wide portion 104 of input, adapted to allow the insertion and latching of the tabs 62 in the insertion position of the first member 20, and a narrow portion 106 , receiving the corresponding lug 62 in the locked position of the first member 20. The narrow portions 106 prevent the output of the lugs 62 safely.
En outre, la tête 40 possède deux méplats d'entraînement 108 pour permettre son entraînement en rotation au moyen d'un outil approprié, tel une clé de serrage, pour déplacer le premier organe 20 de sa position d'insertion à sa position verrouillée.In addition, the head 40 has two drive flats 108 to allow its driving in rotation by means of a suitable tool, such as a wrench, to move the first member 20 from its insertion position to its locked position.
Pour la mise en place du dispositif de fixation 8, l'opérateur assemble l'écrou 21 , la lame 26 et le contre-écrou 24 puis insère l'ensemble ainsi constitué dans l'orifice 12 en alignant les ergots 92 avec les encoches 94. Il effectue ensuite une rotation de l'ensemble au moyen d'un outil de serrage coopérant avec les méplats 108 prévus sur la tête 40, jusque dans la position verrouillée de la figure 10 et des figures 7 et 8. Les autres étapes sont ensuite identiques à celles du mode de réalisation des figures 1 à 6, les méplats 95 et les bords 96 assurant le blocage en rotation du premier organe 20 lors du vissage.For the establishment of the fixing device 8, the operator assembles the nut 21, the blade 26 and the locknut 24 and then inserts the assembly thus formed in the orifice 12 by aligning the lugs 92 with the notches 94 It then rotates the assembly by means of a clamping tool cooperating with the flats 108 provided on the head 40, into the locked position of FIG. 10 and FIGS. 7 and 8. The other steps are then identical to those of the embodiment of Figures 1 to 6, the flats 95 and the edges 96 ensuring the rotational locking of the first member 20 during screwing.
Une fois le dispositif 8 dans sa position définitive de la figure 8, la fixation du flasque 10 avec le pied 11 est sûre, et l'écartement entre le flasque 10 et le pied 11 est maintenu de manière sûre, même en cas de choc ou de vibration suivant l'axe X-X'. Les ergots 92 procurent une immobilisation en translation sûre du premier organe 20 sur le premier composant 6.Once the device 8 in its final position of Figure 8, the attachment of the flange 10 with the foot 11 is secure, and the spacing between the flange 10 and the foot 11 is maintained safely, even in case of shock or vibration along the axis X-X '. The lugs 92 provide immobilization in safe translation of the first member 20 on the first component 6.
La variante du dispositif de fixation représentée sur la figure 11 , où les références numériques aux éléments semblables à ceux des figures 1 à 3 ont été conservées, diffère du mode de réalisation des figures 1 à 3 par la position des filetages. Plus précisément, le filetage 52 du premier organe prévu pour le vissage du deuxième organe 21 est un filetage extérieur, et le filetage 64 complémentaire du deuxième organe 21 est un filetage intérieur.The variant of the fixing device shown in FIG. 11, where the numerical references to elements similar to those of FIGS. 1 to 3 have been preserved, differs from the embodiment of FIGS. 1 to 3 by the position of the threads. More specifically, the thread 52 of the first member provided for screwing the second member 21 is an external thread, and the thread 64 complementary to the second member 21 is an internal thread.
Le deuxième organe 21 possède un alésage intérieur étage, possédant un tronçon de grand diamètre 110 portant le filetage intérieur 64 de vissage du premier organe 20, un tronçon de petit diamètre 112 portant un filetage intérieur 74 complémentaire de celui du troisième organe 22 formé par la vis.The second member 21 has a floor internal bore, having a large diameter section 110 carrying the internal screw thread 64 of the first member 20, a small diameter section 112 carrying an internal thread 74 complementary to that of the third member 22 formed by the screw.
En option, le premier organe 20 comprend un alésage 114 portant un filetage intérieur 116 complémentaire du filetage 88 de la vis 22.Optionally, the first member 20 comprises a bore 114 carrying an internal thread 116 complementary to the thread 88 of the screw 22.
En fonctionnement, après la rupture du frein 90, la vis 22 progresse dans le deuxième organe 21 et peut s'engager dans le filetage intérieur 110 du premier organe 20, de sorte que la vis 22 se serre simultanément dans le premier et le deuxième organe 20, 21. In operation, after breaking of the brake 90, the screw 22 progresses in the second member 21 and can engage in the internal thread 110 of the first member 20, so that the screw 22 is simultaneously clamped in the first and second members 20, 21.

Claims

REVENDICATIONS
1.- Sous-ensemble (2) de véhicule automobile, du type comprenant un premier composant (6), un deuxième composant (4), et un dispositif de fixation (8) du premier composant (6) sur le deuxième composant (4), caractérisé en ce que le dispositif de fixation (8) comprend un premier organe fileté (20), un deuxième organe fileté (21 ) et un troisième organe fileté (22), dans lequel le premier organe (20) et le deuxième organe (21 ) possèdent des filetages complémentaires (52, 64) prévus avec un axe et un premier sens de vissage, et le deuxième et le troisième organes (21 , 22) possèdent des filetages complémentaires (74, 88) prévus avec ledit axe et un deuxième sens de vissage opposé au premier sens de vissage, l'un des filetages complémentaires (74, 88) du deuxième organe (21 ) et du troisième organe (22) possédant un élément de blocage en rotation (90) prévu pour rompre au-delà d'un couple déterminé, de sorte que les filets complémentaires (74, 88) étant en prise, la rotation du troi- sième organe (22) par rapport au premier organe (20) dans le deuxième sens de vissage entraîne la rotation et le dévissage du deuxième organe (21 ) par rapport au premier organe (20) jusqu'à atteindre le couple déterminé, une rotation supplémentaire provoquant le vissage du troisième organe (22) sur le deuxième organe (21 ), dans lequel le premier composant (6) et le premier organe (20) possèdent des reliefs complémentaires de blocage en rotation du premier organe (20) par rapport au premier composant (6) autour de l'axe des filetages, dans lequel le premier organe (20) est adapté pour être inséré dans un orifice traversant de fixation (12) du premier composant (6), et dans lequel le premier organe (20) est mobile en rotation entre une position d'insertion dans l'orifice (12) du premier composant (6) suivant un axe d'insertion (X-X') et une position verrouillée dans laquelle il est immobile en translation suivant l'axe d'insertion (X-X').Motor vehicle subassembly (2), of the type comprising a first component (6), a second component (4), and a fastening device (8) for the first component (6) on the second component (4). ), characterized in that the fixing device (8) comprises a first threaded member (20), a second threaded member (21) and a third threaded member (22), wherein the first member (20) and the second member (21) have complementary threads (52, 64) provided with an axis and a first screwing direction, and the second and third members (21, 22) have complementary threads (74, 88) provided with said axis and a second opposite screwing direction to the first screwing direction, one of the complementary threads (74, 88) of the second member (21) and the third member (22) having a rotational locking member (90) provided for breaking beyond a given torque, so that the complementary nets (74, 88) being in the rotation of the third member (22) relative to the first member (20) in the second screwing direction causes the second member (21) to rotate and unscrew relative to the first member (20) until it reaches the determined torque, an additional rotation causing the screwing of the third member (22) on the second member (21), wherein the first component (6) and the first member (20) have complementary rotational locking reliefs of the first member (20) relative to the first component (6) about the axis of the threads, wherein the first member (20) is adapted to be inserted into a through hole (12) of the first component (6), and wherein the first member (20) is rotatable between an insertion position in the orifice (12) of the first component (6) along an insertion axis (X-X ') and a locked position in which it is immobile in translation along the insertion axis (X-X ').
2.- Sous-ensemble (2) selon la revendication 1 , dans lequel lesdits reliefs complémentaires de blocage en rotation comprennent un méplat (46) prévu sur le premier organe (20).2. Subassembly (2) according to claim 1, wherein said complementary rotational locking reliefs comprise a flat (46) provided on the first member (20).
3.- Sous-ensemble (2) selon la revendication 1 ou 2, dans lequel le premier organe (20) comprend des moyens d'encliquetage pour fixer axialement le premier organe (20) sur le premier composant (6). 3. Subassembly (2) according to claim 1 or 2, wherein the first member (20) comprises latching means for axially fixing the first member (20) on the first component (6).
4.- Sous-ensemble (2) selon la revendication 3, dans lequel les moyens d'encliquetage comprennent une lame (26) adaptée pour s'encliqueter dans au moins un trou de maintien (28) du premier composant (6).4. Subassembly (2) according to claim 3, wherein the latching means comprise a blade (26) adapted to snap into at least one holding hole (28) of the first component (6).
5.- Sous-ensemble (2) selon la revendication 4, dans lequel le premier organe (20) comprend un élément fileté (24), la lame (26) étant rapportée et fixée sur l'élément fileté (24).5. Subassembly (2) according to claim 4, wherein the first member (20) comprises a threaded element (24), the blade (26) being attached and fixed on the threaded element (24).
6.- Sous-ensemble (2) selon la revendication 5, dans lequel la lame (26) est bloquée en rotation et en translation sur l'élément fileté (24).6. Subassembly (2) according to claim 5, wherein the blade (26) is locked in rotation and in translation on the threaded element (24).
7.- Sous-ensemble (2) selon l'une quelconque des revendications précédentes, dans lequel le deuxième organe (21 ) est adapté pour être inséré à travers ledit orifice traversant (12) du premier composant (6).7. Subassembly (2) according to any one of the preceding claims, wherein the second member (21) is adapted to be inserted through said through hole (12) of the first component (6).
8.- Sous-ensemble (2) selon la revendication 7, dans lequel le deuxième organe (21 ) comprend une tête d'appui (66) sur laquelle est prévue une surface de butée (78) adaptée pour prendre appui contre le deuxième composant (4), et présentant une sur- face opposée (76) adaptée pour prendre appui sur le premier organe (20).8. Subassembly (2) according to claim 7, wherein the second member (21) comprises a bearing head (66) on which is provided an abutment surface (78) adapted to bear against the second component (4), and having an opposite surface (76) adapted to bear on the first member (20).
9.- Sous-ensemble (2) selon l'une quelconque des revendications précédentes, dans lequel ledit élément de blocage en rotation (90) est un frein élastomère.The subassembly (2) according to any one of the preceding claims, wherein said rotational locking member (90) is an elastomeric brake.
10.- Sous-ensemble (2) selon l'une quelconque des revendications précédentes, dans lequel le premier organe (20) comprend un premier écrou (24) possédant un file- tage intérieur (52), le deuxième organe (21 ) est un écrou possédant un filetage (64) extérieur complémentaire du filetage intérieur (52) du premier écrou (24).10. A subassembly (2) according to any one of the preceding claims, wherein the first member (20) comprises a first nut (24) having an inner thread (52), the second member (21) is a nut having an external thread (64) complementary to the internal thread (52) of the first nut (24).
11.- Sous-ensemble (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier organe (21 ) possède un filetage additionnel complémentaire du filetage du troisième organe, le filetage du troisième organe étant apte à s'engager dans le filetage additionnel après rupture de l'élément de blocage en rotation.11. Subassembly (2) according to any one of the preceding claims, characterized in that the first member (21) has an additional thread complementary to the thread of the third member, the thread of the third member being able to engage in the additional thread after rupture of the locking element in rotation.
12.- Sous-ensemble (2) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'un des premier composant (6) et deuxième composant (4) est une traverse de planche de bord (6), et l'autre est un pied avant (4) de caisse de véhicule automobile. 12. Subassembly (2) according to any one of the preceding claims, characterized in that one of the first component (6) and second component (4) is a dashboard cross member (6), and other is a front foot (4) of a motor vehicle body.
13.- Sous-ensemble (2) selon l'une quelconque des revendications précédentes, dans lequel le premier organe (20) comprend un premier élément d'appui (26, 40) sur une première face (17) du premier composant (6), et au moins un deuxième élément d'appui (92) sur une deuxième face opposée (15) du premier composant (6), ledit premier élément d'appui (26, 40) et ledit deuxième élément d'appui (92) étant propres à coopérer et ainsi à immobiliser en translation le premier organe (20) suivant l'axe d'insertion (X-X') lorsque le premier organe (20) est dans sa position verrouillée. 13. Subassembly (2) according to any one of the preceding claims, wherein the first member (20) comprises a first bearing element (26, 40) on a first face (17) of the first component (6). ), and at least one second support element (92) on a second opposite face (15) of the first component (6), said first support element (26, 40) and said second support element (92) being specific to cooperate and thus immobilize in translation the first member (20) along the axis of insertion (X-X ') when the first member (20) is in its locked position.
PCT/FR2008/052291 2007-12-13 2008-12-12 Automobile sub-assembly WO2009081007A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0759811 2007-12-13
FR0759811A FR2919259B1 (en) 2007-07-25 2007-12-13 SUBASSEMBLY OF MOTOR VEHICLE.

Publications (2)

Publication Number Publication Date
WO2009081007A2 true WO2009081007A2 (en) 2009-07-02
WO2009081007A3 WO2009081007A3 (en) 2010-02-25

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ID=40801804

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Application Number Title Priority Date Filing Date
PCT/FR2008/052291 WO2009081007A2 (en) 2007-12-13 2008-12-12 Automobile sub-assembly

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FR (1) FR2919259B1 (en)
WO (1) WO2009081007A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3072738A1 (en) * 2017-10-19 2019-04-26 Psa Automobiles Sa RETAINING FIXATION WITH IMPROVED GAME

Citations (4)

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Publication number Priority date Publication date Assignee Title
US6357953B1 (en) * 1999-12-16 2002-03-19 General Motors Corporation Tolerance compensation apparatus
US20020150445A1 (en) * 2000-07-28 2002-10-17 Junzo Ozawa Fastener
DE202005009017U1 (en) * 2005-06-08 2005-08-25 Böllhoff Verbindungstechnik GmbH Tolerance compensation device between two components consists of main part and adjusting sleeve, and separate driver part, all of thermoplastic material
WO2006063634A1 (en) * 2004-12-18 2006-06-22 A. Raymond Et Cie Device for fastening an add-on and a support at a distance from each other

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6357953B1 (en) * 1999-12-16 2002-03-19 General Motors Corporation Tolerance compensation apparatus
US20020150445A1 (en) * 2000-07-28 2002-10-17 Junzo Ozawa Fastener
WO2006063634A1 (en) * 2004-12-18 2006-06-22 A. Raymond Et Cie Device for fastening an add-on and a support at a distance from each other
DE202005009017U1 (en) * 2005-06-08 2005-08-25 Böllhoff Verbindungstechnik GmbH Tolerance compensation device between two components consists of main part and adjusting sleeve, and separate driver part, all of thermoplastic material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3072738A1 (en) * 2017-10-19 2019-04-26 Psa Automobiles Sa RETAINING FIXATION WITH IMPROVED GAME

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FR2919259A1 (en) 2009-01-30
WO2009081007A3 (en) 2010-02-25

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