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
  • B62D25/082—Engine compartments
  • B62D25/084—Radiator supports
• • 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
  • 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
  • F16B5/025—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

Definitions

• the present invention relates to a device for fixing a wafer against a flat face of a fixed part.
• the invention relates in particular to the application of such a device to the attachment of a support plate against a fixed part of the body of a motor vehicle, such as a reinforcement of the front wall.
• Figure 1 is a view showing the front facade of the body of a motor vehicle.
• the reference 1 designates each of the two front facade reinforcements of the body, arranged symmetrically with respect to the longitudinal axis of the body.
• Figures 2 and 3 each show the top of a front facade reinforcement 1. Under the flat face of this reinforcement 1 is disposed a support plate 2.
• This plate 2 is previously positioned facing the flat face of the front facade reinforcement 1 by means of two screws 3, 4 engaged in two respective holes of the reinforcement 1 and each engaged with a welded nut under the wafer 2.
• Figures 2 and 3 show that the reinforcement 1 has two other holes 5, 6 for the passage of screws to engage in a hole 7 made in the wafer 2 and engage with a nut 8 welded under this wafer 2.
• the object of the present invention is to create a device to avoid the case shown in Figure 2 in which the plate 2 is incorrectly positioned relative to the fixed part 1.
• a device for fixing a wafer against a flat face of a fixed part this wafer having been previously positioned opposite said flat face of the fixed part by means of at least one a screw engaged in a first hole of this fixed part and engaged with a first nut welded to the wafer so as to leave it a certain freedom of movement with respect to the fixed part, the wafer comprising at least a second nut welded to this plate for receiving a screw passing through a second hole of the fixed part
• said device being characterized in that it comprises an arm movable in a direction perpendicular to the plane of the flat face of the fixed part, this arm carrying a bearing piece having a surface adapted to bear against the plate and clamp it against the flat face of the fixed part and a recess for receiving the second welded nut the wafer, the flanks of this recess being adapted to cooperate frictionally with said second nut for adjusting the position thereof facing the second hole of the fixture before the clamping plate against the stationary
• flanks of the recess of the support piece can during movement of the arm move the nut welded to the plate to a position in which the nut is located opposite the hole of the fixed part.
• said support piece is made integral with said arm by means for guiding said support piece in translation relative to said arm in a predetermined stroke, against the action of at least one return spring disposed between the support member and the arm.
• a flank of the recess of the support piece bears against the nut of the plate under the action of the force exerted by the spring of reminder to adjust the position of the nut.
• the support piece bears against the plate under the action of the force exerted by the arm of the device to clamp the plate against the fixed part.
• the stroke of displacement of the support member relative to the arm is adjustable in particular by means of at least one screw screwed into a tapping formed in the arm, so that the end of the screw constitutes a stop of limit switch.
• the return force of the spring is sufficient to overcome the forces generated during the friction between the flanks of said recess of the bearing piece and the second nut.
• said recess is made between two parts spaced apart from said support piece whose ends form said surface adapted to bear against the plate, the sidewall of each of said parts being inclined relative to in said direction perpendicular to the plane of the planar face of the fixed part.
• the depth of the recess is at least equal to the axial length of the second nut and the distance between the two spaced portions measured in the plane of their ends is greater than the width of the second nut.
• the invention also relates to the application of the device according to the invention to the attachment of a plate against a fixed part of the body of a motor vehicle.
• said fixed part is a reinforcement of the front face and the device is part of a template which is adapted to preposition a plate against each of the two front face reinforcements, said template comprising a movable part for controlling the displacement arm in a direction perpendicular to the plane plane of the fixed part.
• said template comprises a first indexing pilot adapted to engage in a hole made in the front facade reinforcement and in a hole of the plate located opposite the hole of this reinforcement and a second indexing pilot adapted for engaging in said second hole of the front facade reinforcement and traversing said second welded nut to said wafer to prevent rotation of said wafer relative to said front facade reinforcement.
• FIG. 4 is a perspective view of the device according to the invention.
• FIG. 5 is a perspective view of the device represented in FIG. 4, the arm of which is in operational position under a plate and a front facade reinforcement;
• FIG. 6 is a sectional view showing a part of the front facade reinforcement, a part of the plate and the support piece of the device according to the invention showing the cooperation between a side of the support piece and the nut welded to the plate.
• Figures 4 and 5 show a device for fixing a plate 2 against the lower planar face of a front facade reinforcement 1.
• This wafer 2 has previously been positioned opposite the flat face of the reinforcement 1 by means of the two screws 3, 4 engaged as shown in FIGS. 2 and 3 in holes of the reinforcement 1 and engaged with non-represented nuts welded to the plate 2 so as to leave it a certain freedom of movement relative to the reinforcement 1.
• the plate 2 also comprises another nut 8 welded to this plate for receiving a screw passing through a hole 6 of the front facade reinforcement 1.
• this device comprises an arm 10 movable in a direction D (see FIG. 5) perpendicular to the plane of the flat face of the reinforcement 1.
• This arm 10 carries a support member January 1 having a surface January 1 adapted to come into abutment (see Figure 5) against the plate 2 and clamp it against the flat face of the reinforcement 1.
• This support piece 1 1 also comprises a recess 12 for receiving the nut 8 welded to the wafer 2.
• flanks 13, 14 of this recess 12 are adapted to cooperate by friction with the nut 8 to adjust the position thereof opposite the hole 6 (see FIG. 2) of the reinforcement 1, before clamping the plate 2 against this reinforcement 1.
• the support part 1 1 is made integral with the arm 10 by means making it possible to guide this support piece in translation relative to the arm 10 in a predetermined stroke, against the action of at least one return spring 15 ( see Figure 4) arranged between the support part 1 1 and the arm 10.
• the guide in translation of the support member 1 1 with respect to the arm 10 is obtained thanks to a housing 16 of U-shaped cross-section engaged on a part 10a of the arm 10 extending in a direction perpendicular to the direction D of movement of the arm 10.
• This housing 16 is made in a part 17 integral with the support piece
• the translation travel of the assembly formed by the support part 1 1 and the part 17 relative to the part 10a of the arm 10 is adjustable by means of at least one screw 18 screwed into a tapping made in the part 10a of the arm 10, so that the end of the screw constitutes a limit stop for the assembly 1 1, 17 above.
• the restoring force exerted by the spring 15 is sufficient to overcome the forces generated during the friction between the flanks 13, 14 of the recess 12 of the support piece 11. and the nut 8, welded under the wafer 2.
• the recess 12 is formed between two spaced portions 19, 20 of the support part 1 1, the ends 1 1 a form the surface adapted to bear against the plate 2.
• flank 13, 14 of each of the two parts above is inclined with respect to the direction D perpendicular to the plane of the plane face of the front facade reinforcement 1.
• the depth of the recess 12 is at least equal to the axial length of the nut 8 and the distance between the two spaced portions 19, 20 measured in the plane of their ends 11a is greater than the width of the nut 8.
• the device shown in FIGS. 4 and 5 is part of a template itself known which is adapted to preposition a wafer 2 against each of the two front face reinforcements 1.
• This template comprises a movable part for controlling the displacement of the arm 10 in the direction D perpendicular to the plane of the plane face of the front facade reinforcement 1.
• This template comprises, as shown in FIG. 5, a first indexing driver 21 adapted to engage in the hole 5 (see FIG. 3) made in the front facade reinforcement 1 and in the hole 7 of the plate 2 located in view of the hole 5 of the reinforcement 1 and a second indexing driver 22 adapted to engage in the hole 6 of the front facade reinforcement 1 and through the hole of the nut 8 welded to said plate 2 to prevent rotation of this plate 2 relative to the front facade reinforcement 1.
• the position of the support member January 1 is perfectly defined relative to the longitudinal axis X, transverse Y and vertical Z of the vehicle.
• the arm 10 moves in a direction D which is parallel to the vertical axis Z of the vehicle reference frame.
• FIG. 6 shows that when the position of the nut 8 is offset with respect to its correct position, one of the inclined sides of the recess 12 of the support piece 11 will touch the nut 8.
• the arm 10 compresses the spring 15 between the support member 1 1 and the arm 10 to a position in which an abutment limits the travel of the arm 10 relative to the support piece 1 1.
• this support member 1 1 becomes integral with the arm 10 and applies on the plate 2 a force which clamps against the reinforcement 1.
• the indexing pilots 21, 22 can then be engaged in the holes 5 and 6 of the reinforcement 1.
• the final fixing of the plate 2 against the reinforcement 1 can then be achieved by tightening the screws 3 and 4 (see Figures 2 and 3).

Applications Claiming Priority (2)

Publications (1)

Family

ID=42358102

Family Applications (1)

Country Status (4)

Families Citing this family (7)

Family Cites Families (6)

• 2009
  • 2009-12-24 FR FR0959561A patent/FR2954721B1/fr not_active Expired - Fee Related
• 2010
  • 2010-11-25 WO PCT/FR2010/052522 patent/WO2011077021A1/fr active Application Filing
  • 2010-11-25 CN CN201080064828.3A patent/CN102791564B/zh active Active
  • 2010-11-25 EP EP10805271A patent/EP2516243A1/de not_active Withdrawn

Non-Patent Citations (1)

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