Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • 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
  • F16B5/025—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 specially designed to compensate for misalignement or to eliminate unwanted play
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D27/00—Connections between superstructure or understructure sub-units
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D27/00—Connections between superstructure or understructure sub-units
  • B62D27/06—Connections between superstructure or understructure sub-units readily releasable
  • B62D27/065—Connections between superstructure or understructure sub-units readily releasable using screwthread
• • 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
• • 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
  • F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts

Definitions

• the invention relates to the assembly of motor vehicle parts. It relates in particular to the attachment of two parts, an internal combustion engine of a motor vehicle, one to the other by means of a stand that bears on plans of non-parallel parts between them.
• an assembly method in which a connecting piece is fixed to a main piece by setting up a preliminary member, and then the connecting piece is fixed by setting up a connecting piece.
• main organs on the one hand to the main room and on the other hand to another main room.
• the preliminary member without generating abnormal stress in the parts during or after the process, ensures a holding in position of the main parts until the completion of the assembly. We thus reduces the risks of generating constraints and avoids the use of a mounting template.
• the first fixing is carried out by providing a mounting clearance between the connecting piece and the main piece in at least one direction, preferably at least two directions not parallel to each other.
• the presence of this game particularly reduces the risk of causing stresses in the parts by facilitating the relative positioning of the parts prior to their rigid attachment.
• the method according to the invention may also have at least one of the following characteristics:
• the second fixing step is performed so that the main parts have respective bearing planes on the non-parallel connecting part;
• the connecting piece is a crutch.
• an assembly comprising two main parts, a connecting piece ensuring attachment of the main parts to one another and a location for receiving a fastener of the connecting piece to one of the main rooms, the location being empty.
• FIG. 1 is a perspective view of a portion of a vehicle comprising an assembly according to the invention
• FIG. 2 is a perspective view of the stand part of the assembly of Figure 1;
• FIG. 3 is a perspective view of the preliminary fixing member forming part of the assembly of FIG. 1;
• Figure 4 is a sectional view at the IV-IV plane of the assembly of Figure 1.
• the method according to the invention is intended for the assembly of two parts 2, 4 of a motor vehicle.
• the method is implemented by assembling these two parts by means of a connecting piece 6 which is in this case a stand.
• the stand has been illustrated in Figures 1 and 2. It has a generally trapezoidal shape having two end sides 8, 10 parallel to each other and two lateral sides 12, 14 inclined relative to each other. the other.
• the side 8 has a greater length than the side 10.
• the sides 12 and 14 extend symmetrically with respect to a mediator of the end sides 8, 10.
• the long end side 8 is intended to be connected to the piece 2. It has for this purpose an upper face 16 forming a reference plane and intended to come into surface contact with a flat face 18 of the part 2.
• the face 16 of the stand extends parallel to the upper face 20 of the stand that has the trapezoidal shape.
• the side 8 has at its two ends two oblong holes 22 passing through the thickness of the stand in a direction Z perpendicular to the face 16.
• Each of the oblong holes 22 is further open on a side opposite the short side 10 of the stand.
• Each hole 22 thus has a "U" shape in plan view.
• the long side 8 also has an oblong hole 24 disposed between the two holes 22 and also passing through the thickness of the stand following the direction Z perpendicular to the face 16. It has however a closed contour.
• the hole is elongated in the same direction X as the holes 22, this direction X being perpendicular to the sides 8, 10 and parallel to the face 16.
• the stand has a greater thickness at the short side 10 than at the side 8. It extends downwardly from the side 10 by means of a wall 30 having an outer rear face 32 perpendicular to the face 16 and the general plane of the trapezium. The plane of the face 32 is intended to serve as a reference plane for the attachment of the stand to the piece 4.
• the wall 30 has two oblong holes 34 through the thickness of the wall following the X direction perpendicular to the face 32. The holes 34 are elongated downward in the direction Z of the thickness of the stand.
• the piece 2 has two rods 36 projecting from the face 18. As for the piece 4, it has two barrels 38, the barrels having axes parallel to each other perpendicular to the axes of the rods 36 which are also parallel to each other.
• the method is implemented as follows.
• the crutch 6 is then fixed to the main part 2 by placing a preliminary member 40 formed in this case by a screw.
• the screw has a thread 42 engaging with a corresponding thread 44 formed in an orifice 60 of the workpiece 2.
• the screw 40 extends through the elongated hole 24 of the stand, the diameter of the screw being much smaller than the width of this hole as illustrated in particular in Figure 4.
• This fixing is performed so as to provide a clearance j between the upper face 16 of the stand and the lower face 18 of the part 2 in the direction Z. In other words, the screw 40 is not tight.
• This clearance along the Z direction of the axis of the screw also allows a clearance between the stand 6 and the piece 2 along the two directions X and
• the crutch 6 is then fixed to the main part 4 by means in this case of two main members formed by nuts 50 which tighten the wall 30 threaded by the holes 34 on the drums 38.
• This attachment of the stand 6 to the piece 4 is a rigid fixation.
• a similar rigid attachment of the stand 6 to the workpiece 2 is then carried out at the level of the rods 36 threaded into the holes 22 by means of two nuts 52.
• the stand 6 is connected to the main parts 2 and 4 by reference planes of the latter not parallel to each other and even perpendicular to each other.
• the use of the additional screw 40 on the stand allows to fix it to the workpiece 2 while allowing the movement of the stand in two directions and without significantly constrain the stand in the third direction.
• the assembly is performed with only a very low final stress. It does not require the use of a template for positioning and holding parts in position.
• the screw 40 can preposition the stand 6 relative to the parts 2, 4 while providing a game that allows to allow the movement of the stand in at least two directions and adjust the assembly to have, during assembly final, a known game. This allows to know more precisely the static constraints imposed on the assembly during tightening.
• the shape of the stand can be obtained gross casting in the case of a molded stand, which does not generate additional cost on the part, or during stamping in the case of a crutch sheet, which again does not generate additional cost.
• the position of the preliminary organ can be modified. It can be provided to use not one but two preliminary fasteners. It is possible to carry out the rigid fixing of the stand first to the workpiece 2 and then only to the workpiece 4.
• the shape of the main workpieces 2, 4 and of the connecting piece 6 and the configuration of the fastening elements can be modified. main 50, 52.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Manufacturing & Machinery (AREA)
• Automatic Assembly (AREA)
• Forklifts And Lifting Vehicles (AREA)
• Connection Of Plates (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34953946

Family Applications (1)

Country Status (4)

Families Citing this family (4)

Citations (3)

Family Cites Families (4)

• 2004
  • 2004-11-30 FR FR0412672A patent/FR2878494B1/fr not_active Expired - Fee Related
• 2005
  • 2005-11-30 KR KR1020077014657A patent/KR20070086711A/ko not_active Ceased
  • 2005-11-30 WO PCT/FR2005/051006 patent/WO2006059036A1/fr not_active Ceased
  • 2005-11-30 EP EP05818959A patent/EP1819578A1/de not_active Withdrawn

Patent Citations (3)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events