EP2736747A1 - Vorrichtung zur befestigung eines antriebsaggregats am fahrgestellt eines kraftfahrzeugs - Google Patents

Vorrichtung zur befestigung eines antriebsaggregats am fahrgestellt eines kraftfahrzeugs

Info

Publication number
EP2736747A1
EP2736747A1 EP12733795.4A EP12733795A EP2736747A1 EP 2736747 A1 EP2736747 A1 EP 2736747A1 EP 12733795 A EP12733795 A EP 12733795A EP 2736747 A1 EP2736747 A1 EP 2736747A1
Authority
EP
European Patent Office
Prior art keywords
chassis
powertrain
fixing
fastening
fixing device
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.)
Withdrawn
Application number
EP12733795.4A
Other languages
English (en)
French (fr)
Inventor
Jean-Luc Salomons
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of EP2736747A1 publication Critical patent/EP2736747A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B60K5/1208—Resilient supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B60K5/1283—Adjustable supports, e.g. the mounting or the characteristics being adjustable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling
    • Y10T29/49817—Disassembling with other than ancillary treating or assembling

Definitions

  • the present invention relates to a device for fixing a powertrain on a chassis of a motor vehicle.
  • the invention also relates to an assembly comprising such a fixing device.
  • the invention also relates to a method of modifying the attachment of a power unit to a chassis of a motor vehicle
  • the object of the invention is to provide a fixing device to overcome the problem mentioned above and improving the fixing devices known in the prior art.
  • the invention provides a simple fastening device, allowing the movement of a powertrain relative to a chassis to facilitate maintenance operations.
  • the invention also relates to a method for modifying a fastening of a power unit on a chassis.
  • a device for attaching a power unit to a chassis of a motor vehicle comprises a body, a first end of which is intended to be connected to a first fastening element of the powertrain and a second end of which is intended to to be linked to a second frame fastener.
  • the fixing device may have an elongate shape along an axis.
  • the fixing device may measure between about ten centimeters and twenty centimeters, in particular about fifteen centimeters.
  • the fixing device may comprise a radial cut at the first end or at the second end.
  • the fixing device may comprise a first thread at the second end to receive a first fixing threaded element cooperating with the second fastening element of the frame.
  • the fastening device may comprise a second thread to receive a second threaded fastener element integral with the power unit.
  • the first and second threads can be confused.
  • an assembly comprises a fixing device defined above and a screw intended to be screwed into the fixing device.
  • the method of modifying the attachment comprises the following steps:
  • the step of fixing the power unit to the chassis via the fixing device may comprise a fixing step, in particular of screwing, fastening device on a fastening element of the powertrain or the chassis, in particular on a stud of the fastening element of the powertrain or the chassis.
  • the fixing step of the fastening device on a powertrain fastening element may comprise a step of placing the fixing device by moving the latter in a direction parallel to or substantially parallel to the direction of movement of the powertrain. relative to the chassis.
  • the step of fixing the powertrain on the chassis via the fixing device may comprise a step of fixing, in particular screwing, the fastening device on a chassis fastening element or on a powertrain fastening element, in particular to using a fixing screw.
  • the method may then comprise a step of removing the fixing device and a step of fixing the power unit on the chassis without the fixing device.
  • a motor vehicle is obtained by the method defined above.
  • the attached drawing shows, by way of example, an embodiment of a fixing device according to the invention.
  • FIG. 1 is a view of a powertrain mounted on a chassis of a motor vehicle in a first configuration.
  • FIG. 2 is a view of the powertrain mounted on the chassis of a motor vehicle in a second configuration using an embodiment of a fastening device according to the invention.
  • Figure 3 is a perspective view of the embodiment of the fastening device according to the invention.
  • FIG. 4 is a detail view, in the second configuration, of the embodiment of the fixing device according to the invention, placed on a powertrain before attachment to the chassis.
  • FIG. 5 is a detailed view, in the second configuration, of the embodiment of the fixing device according to the invention, placed between a powertrain and a chassis, the powertrain being fixed to the chassis via the fixing device. .
  • a motor vehicle part is shown.
  • the vehicle includes a chassis 2 and a power train 1.
  • the powertrain includes for example an internal combustion engine. It could however also include an electric motor.
  • the powertrain is fixed to the chassis by means of fasteners 3 of the frame provided on the chassis, such as arms or lugs, cooperating with fasteners 4 of the powertrain, such as arms or lugs.
  • fasteners 3 of the frame provided on the chassis, such as arms or lugs
  • fasteners 4 of the powertrain such as arms or lugs.
  • studs 7 are put in place.
  • these studs pass through the end of the frame fasteners and nuts 9 are placed on the studs.
  • the studs pass through the fastening elements of the frame at damping members 8, such as silentblocs, to ensure decoupling vibration between the powertrain and the chassis.
  • the attachment could be reversed.
  • the studs could be put in place on the fastening elements of the chassis to cooperate with passage holes provided in the fasteners of the powertrain.
  • chassis attachment elements cooperating with two powertrain fastening elements are used to fix or suspend the powertrain on the chassis.
  • the powertrain is in a first configuration characterized by a first position of the powertrain relative to the chassis.
  • the fastening devices according to the invention make it possible to provide a mechanical fastening interface between the powertrain fastening elements and the chassis fastening elements, so that the powertrain is fixed to the chassis in a second configuration characterized by a second powertrain position relative to the chassis.
  • a first end of each fastening device is fixed to the fastening elements of the powertrain and a second end of each fastening device is attached to the fastening elements of the chassis.
  • Figure 4 shows the same second configuration before fixing the fasteners to the frame fasteners.
  • the fixing device 5 makes it possible to fix the power unit 1 on the chassis 2 of the motor vehicle, in the second configuration.
  • the fixing device comprises a body of which a first end 57 is intended to be linked or fixed to a first element 4 for fixing the powertrain and a second end 58 of which is intended to be connected or fixed to a second fixing element 3 of the frame. Nevertheless, apart from service or maintenance operations, it is clear that the first attachment element of the powertrain is attached to the second frame fastener element directly or at least without the use of the fixing device 5 , so that the powertrain is attached to the chassis in the first configuration.
  • the fixing device has an elongated shape along an axis 56.
  • it measures between 10 cm and 20 cm, in particular about 15 cm.
  • the fixing device has for example a global form of revolution. It consists of a first bore portion 52 extending from its first end 57 and a second threaded portion 54 extending from its second end 58. Its first end 57 comprises a face 51 intended to bear against the element. powertrain fastening.
  • the fixing device comprises a tapping 55, for example a tapping M10, along the axis 56.
  • the first part comprises a notch 53 or a groove extending radially from the axis 56. As will be described later, this notch allows to make the axis 56 of the fastening device coincide with the axis 71 of a stud 7 by moving the fixing device substantially perpendicular to its axis 56. The height of the leaf measured along the axis 56 is nevertheless less than the height the stud 7 measured along the axis 71, so that the threaded end of the stud can be screwed into the tapping 55.
  • the tapping makes it possible to receive a first threaded fastener element 6, such as a screw cooperating with the second fastener element of the chassis.
  • the first threaded element passes through, for example, a hole provided on the second element for fixing the frame. It may also allow to receive a second threaded fastener element, such as a stud 7, integral with the powertrain. Alternatively, two threads may be provided to receive the first and second threaded elements.
  • the fastening device 5 constitutes with the threaded element 6 a fixing assembly.
  • a lifting table is brought under the powertrain and the power unit is detached from the chassis at the previously mentioned fixations.
  • the chassis resting on a lift it is moved, for example it goes up, for example 15 cm.
  • a second step we provide and set up fasteners 5.
  • the fixing device is made to coincide the axis 56 of the fixing device and the axis 71 of a stud 7 and brings the end of the tapping 55 at the bottom of the bore 59 in contact with the end of the stud 7 by moving the fixing device substantially perpendicularly to its axis 56.
  • it is not possible to set up the fixing device by moving the fixing device substantially parallel to its axis 56 to bring the end of the tapping 55 to the bottom of the bore 59 in contact with the end of the stud 7
  • the fasteners are then screwed onto the studs until the surfaces 51 come into contact with the powertrain fasteners.
  • the powertrain is fixed on the chassis via the fixing device.
  • screws 6 are provided and they are put in place in holes made in the frame fastening elements (in which the studs 7 normally penetrate). Then, these screws 6 are screwed into the threads 55 as shown in FIG. 5.
  • the fasteners are interposed between the fastening elements of the powertrain and the fastening elements of the chassis. They allow to fix the powertrain in its second configuration. Indeed, the forces of restraint or suspension of the powertrain pass studs 7 to the fasteners, then to the screws 6, and then to the fasteners of the chassis.
  • the powertrain is then suspended from the chassis with the attachment device acting as an extension. Therefore, we can carry out maintenance or after-sales service on the powertrain. If necessary, the powertrain can be operated while it is in its second configuration to check that everything is working properly before returning the power train to its first configuration by doing the opposite of what has been described more. high.
  • the motor vehicle can be returned to its owner.
  • fasteners having a length of about 15 cm are used.
  • a notch 53 makes it possible to limit the displacements of the chassis with respect to the engine during the passage from the first configuration to the second configuration. In addition, it avoids damaging the threaded portion of the studs of the powertrain fasteners.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
EP12733795.4A 2011-07-29 2012-06-21 Vorrichtung zur befestigung eines antriebsaggregats am fahrgestellt eines kraftfahrzeugs Withdrawn EP2736747A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1156982A FR2978382B1 (fr) 2011-07-29 2011-07-29 Dispositif de fixation d'un groupe motopropulseur sur un chassis d'un vehicule automobile
PCT/FR2012/051414 WO2013017757A1 (fr) 2011-07-29 2012-06-21 Dispositif de fixation d'un groupe motopropulseur sur un chassis d'un vehicule automobile

Publications (1)

Publication Number Publication Date
EP2736747A1 true EP2736747A1 (de) 2014-06-04

Family

ID=46506593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12733795.4A Withdrawn EP2736747A1 (de) 2011-07-29 2012-06-21 Vorrichtung zur befestigung eines antriebsaggregats am fahrgestellt eines kraftfahrzeugs

Country Status (4)

Country Link
US (1) US20140196963A1 (de)
EP (1) EP2736747A1 (de)
FR (1) FR2978382B1 (de)
WO (1) WO2013017757A1 (de)

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Also Published As

Publication number Publication date
FR2978382A1 (fr) 2013-02-01
FR2978382B1 (fr) 2014-11-07
US20140196963A1 (en) 2014-07-17
WO2013017757A1 (fr) 2013-02-07

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