JP4742767B2 - Car body front structure and method of assembling the same - Google Patents

Description

  The present invention relates to a vehicle body front structure and an assembling method thereof, and more particularly to a vehicle body front structure and an assembling method thereof for assembling a radiator support member and a bumper reinforcement.

As a conventional method of assembling the vehicle body front structure, there is disclosed a method in which the front side member, the bumper reinforcement and the front end panel of the vehicle body are simultaneously fastened in a state where they are positioned with a mounting jig (Patent Literature). 1).
JP 11-139345 A

  However, as in the conventional example described above, in the case where the guide rod of the mounting jig is simultaneously inserted and positioned in the first guide hole of the bumper reinforcement and the second guide hole of the front end panel, the first guide hole and the second guide hole are positioned. 2 Since the position of the bumper reinforcement and the front end panel in the vehicle width direction is determined by the processing accuracy of the guide hole, for example, it is difficult to align the center positions of the bumper reinforcement and the front end panel in the vehicle width direction. It was difficult to improve the mounting accuracy of the parts that were assembled based on

  An object of the present invention is to improve the feeling of quality of a vehicle by taking into account the above facts and increasing the accuracy of building parts assembled to the front of the vehicle body.

According to the first aspect of the present invention, a bumper reinforcement is provided with a bumper side reference in the vehicle width direction, and a pair of adjustment brackets provided with a reference hole for positioning at the rear part of the bumper reinforcement at the time of assembly to the vehicle body side mounting portion. a first step of fixing the, provided the vehicle width direction of the radiator side reference to the radiator support member, the intermediate bracket is escape hole having a large diameter provided corresponding to at least the reference hole than the reference hole, the adjustment The second step of fixing the radiator supporting member to both sides in the vehicle width direction corresponding to the bracket, and adjusting the bumper side reference and the radiator side reference in a direction corresponding to the vehicle width direction. A bracket is overlapped from the front side of the intermediate bracket, and the bumper is placed on the front side of the radiator support member in a state where the reference hole communicates with the escape hole. A third step of the front unit by assembling down force, the intermediate bracket of the front section unit by aligning on the vehicle body side mounting portion, is formed with a diameter enough to fit in a fit the reference holes and gaps and a fastening member for positioning having a large diameter portion, insertion from the reference holes, and fastened to the vehicle body-side mounting portion through the escape hole, the front unit to the vehicle body-side mounting portion while correcting by the fastening member And a fourth step of assembling the vehicle body side attachment portion.

  In the method for assembling the vehicle body front part structure according to claim 1, the bumper reinforcement side reference of the bumper reinforcement and the radiator side reference of the radiator support member are matched in the direction corresponding to the vehicle width direction. By overlapping the adjustment bracket on the radiator support member side intermediate bracket from the front side, the bumper reinforcement is assembled to the front side of the radiator support member to form the front unit.Therefore, the bumper is already in the state of the front unit before being assembled to the vehicle body side. The side reference and the radiator side reference can be aligned in a direction corresponding to the vehicle width direction. For this reason, it is possible to easily increase the mounting accuracy of the parts assembled using the bumper side reference and the radiator side reference.

Also, at the assembly stage of the front unit, make sure that the reference hole in the adjustment bracket is in communication with the relief hole of the intermediate bracket, and align the intermediate bracket of the front unit with the mounting part on the vehicle body side. A positioning fastening member having a large-diameter portion formed to have a diameter enough to fit with the hole is inserted from the reference hole, fastened to the vehicle body side mounting portion through the relief hole, and the vehicle body side mounting portion is fastened to the fastening member. Since the front unit is assembled to the vehicle body side mounting portion while correcting by the above, the vehicle body side mounting portion can be drawn to the fastening member, and the relative positional accuracy between the vehicle body side mounting portion and the bumper side reference and the radiator side reference Can also be increased.

  Thus, according to the method for assembling the vehicle body front structure according to the first aspect, it is possible to improve the accuracy of the vehicle by increasing the accuracy of assembling the parts assembled to the vehicle body front.

According to a second aspect of the present invention, in the method of assembling the vehicle body front structure according to the first aspect, the adjustment bracket has a smaller diameter than the escape hole that does not correspond to the reference hole and a larger diameter portion of the fastening member. A through-hole having a large diameter and communicating with the escape hole is formed. In the fourth step, the fastening member is also inserted from the through-hole, and the vehicle body side attachment portion is inserted through the escape hole not corresponding to the reference hole. Conclude.

According to a third aspect of the present invention, in the method of assembling the vehicle body front part structure according to the first or second aspect, as the fastening member, a screw portion formed on a front end side and a bolt head from an end of the screw portion. A taper portion that gradually increases in diameter toward the side, and the large diameter portion is formed with a constant diameter from the maximum diameter position of the taper portion to the neck of the bolt head and shorter than the plate thickness of the adjustment bracket. Use the centering bolt.

According to a fourth aspect of the present invention, in the second step of the method for assembling the vehicle body front part structure according to any one of the first to third aspects, a position in the vehicle width direction of the exterior part at the vehicle front part is determined. A mounting bracket is fixed to the radiator support member.

In the method of assembling the vehicle body front part structure according to claim 4 , in the second step, the mounting bracket for determining the vehicle width direction position of the exterior part in the vehicle body front part is fixed to the radiator support member. The member can be provided with an attachment reference for exterior parts. For this reason, if this mounting bracket is used, even if it is an exterior component assembled at a position where the radiator side reference cannot be directly used, its installation accuracy can be easily increased.

According to a fifth aspect of the present invention, in the second step of the method of assembling the vehicle body front part structure according to any one of the first to fourth aspects, the lock reference for installing the hood lock mechanism is It is characterized in that it is provided based on the radiator side reference.

In the method for assembling the vehicle body front structure according to claim 5 , in the second step, the lock reference for installing the hood lock mechanism is provided based on the radiator side reference, so the center position in the vehicle width direction of the radiator support member The hood lock mechanism can be provided with high accuracy, and thereby, for example, the hood installation accuracy for covering the engine compartment can be improved.

According to the sixth aspect of the present invention, a pair of adjustment brackets having a reference hole for positioning the vehicle body side mounting portion at the time of assembling to the vehicle body side mounting portion are fixed to the rear portion. The bumper reinforcement and the radiator side reference in the vehicle width direction are provided, and an intermediate bracket having at least a relief hole larger than the reference hole corresponding to the reference hole corresponds to the adjustment bracket. The front unit is assembled by assembling the bumper reinforcement so that the adjustment bracket is overlapped from the front side with the bumper side reference and the radiator side reference being aligned in a direction corresponding to the vehicle width direction. anda radiator support member configurable to, the said bumper reinforcement radiator support portion In the state where the front unit becomes the front unit, the reference hole communicates with the escape hole, and the front unit is inserted from the reference hole through the escape hole and has a gap in the reference hole at the large diameter portion. It is assembled to the vehicle body side mounting portion by a positioning fastening member fastened to the vehicle body side mounting portion in a state of being fitted with a fit .

In the vehicle body front part structure according to claim 6 , the bumper reinforcement on the front side of the radiator support member in a state where the bumper side reference of the bumper reinforcement and the radiator side reference of the radiator support member coincide with each other in a direction corresponding to the vehicle width direction. As a result, the front unit can be configured, so that the bumper side reference and the radiator side reference can be aligned in the direction corresponding to the vehicle width direction simply by assembling the front unit. For this reason, it is possible to easily increase the mounting accuracy of the parts assembled using the bumper side reference and the radiator side reference.

In addition, in the state of the front unit, the reference hole of the adjustment bracket communicates with the relief hole of the intermediate bracket, so that a positioning fastening member that fits the reference hole can be correctly fitted to the reference hole. it can. Further, when the front unit is assembled to the vehicle body side mounting portion, the vehicle body side mounting portion can be drawn to the fastening member by fitting the fastening member into the reference hole with a clearance fit. The relative positional accuracy with respect to the bumper side reference and the radiator side reference can also be increased.

According to a seventh aspect of the present invention, in the vehicle body front part structure according to the sixth aspect, the adjustment bracket has a smaller diameter than the escape hole not corresponding to the reference hole and a larger diameter than the large diameter portion of the fastening member. A through hole communicating with the escape hole is formed, and the fastening member is also inserted through the through hole and fastened to the vehicle body side mounting portion through the escape hole not corresponding to the reference hole.

The invention according to claim 8 is the vehicle body front part structure according to claim 6 or claim 7, wherein the fastening member includes a screw portion formed on the tip end side, and gradually increases from the terminal end of the screw portion to the bolt head side. A centering bolt having a tapered diameter, the large diameter portion having a constant diameter from a maximum diameter position of the tapered portion to a neck of the bolt head and shorter than a plate thickness of the adjustment bracket. It is.

According to a ninth aspect of the present invention, in the vehicle body front portion structure according to any one of the sixth to eighth aspects, the radiator support member is provided with a position in the vehicle width direction of an exterior part at the front portion of the vehicle body. The mounting bracket is fixed.

In the vehicle body front part structure according to claim 9 , since the mounting bracket for determining the vehicle width direction position of the exterior part at the front part of the vehicle body is fixed to the radiator support member, the mounting bracket is used as a reference for mounting the exterior part. Can be used as For this reason, if this mounting bracket is used, even if it is an exterior component assembled at a position where the radiator side reference cannot be directly used, its installation accuracy can be easily increased.

A tenth aspect of the present invention is the vehicle body front structure according to any one of the sixth to ninth aspects, wherein the radiator support member has a lock reference for installing a hood lock mechanism on the radiator side. It is characterized by being provided based on standards.

In the vehicle body front structure according to claim 10 , since the lock reference for installing the hood lock mechanism is provided on the radiator support member based on the radiator side reference, if the lock reference is used, the radiator support is provided. The hood lock mechanism can be provided with high accuracy at the center position in the vehicle width direction of the member, and thereby, for example, the hood installation accuracy for covering the engine compartment can be improved.

  As described above, according to the method for assembling the vehicle body front part structure according to claim 1 of the present invention, the accuracy of building the parts to be assembled to the vehicle body front is improved and the quality of the vehicle is improved. An excellent effect is obtained.

According to the assembling method of the vehicle body front structure according to claim 4 , it is excellent that the mounting accuracy can be easily increased even if the exterior part is assembled at a position where the radiator side reference cannot be directly used. Effect.

According to the method for assembling the vehicle body front structure according to the fifth aspect , an excellent effect is obtained that, for example, the hood installation accuracy for covering the engine compartment can be improved.

According to the vehicle body front structure according to the sixth aspect of the present invention, it is possible to obtain an excellent effect that it is possible to easily increase the mounting accuracy of the parts to be assembled using the bumper side reference and the radiator side reference.

According to the vehicle body front structure according to the ninth aspect , by using the mounting bracket, it is possible to easily increase the installation accuracy even if the exterior part is assembled at a position where the radiator side reference cannot be directly used. The excellent effect of being able to be obtained is obtained.

According to the vehicle body front part structure of the tenth aspect , for example, an excellent effect can be obtained that the hood installation accuracy for covering the engine compartment can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, a vehicle body front structure S according to the present embodiment is obtained by assembling a front unit 14 formed by assembling a bumper reinforcement 10 and a radiator support member 12 to a front side member 16 that is an example of a vehicle body attachment portion. It is configured.

  The bumper reinforcement 10 is provided with a bumper side reference 10A that is, for example, the center position in the vehicle width direction, and a pair of adjustments having a reference hole 18A for positioning the front side member 16 when assembled to the front side member 16. The bracket 18 is fixed to the rear part. A pair of crash boxes 20 is provided on the rear side of the bumper reinforcement 10, and the adjustment bracket 18 is a flange-like plate member fixed to the rear ends of the pair of crash boxes 20. Here, the crash box 20 is a member that is easily crushed against an axial compressive load in the longitudinal direction of the vehicle, for example, by providing the fragile portion 20A in advance, and the vehicle 50 having the vehicle body front structure S. When FIG. 11 collides front and a collision load is input from the bumper reinforcement 10, it is crushed in the vehicle front-rear direction so that a certain amount of collision energy can be absorbed.

  As shown in FIG. 2, each adjustment bracket 18 is formed with a total of five holes, for example, above and below the bumper reinforcement 10, and the vehicle width at one position on the uppermost outer side in the vehicle width direction. A long hole 18B that is long in the direction is formed, through holes 18C are formed at two upper and lower positions inside the vehicle width direction, and circular reference holes 18A are formed at two positions above and below the position between the long hole 18B and the through hole 18C. Is formed. The diameter of the reference hole 18A is, for example, 14 mm, and the diameter of the through hole 18C that is not a positioning reference is larger than the reference hole 18A, for example, 16 mm. The dimensions of the long hole 18B are, for example, a diameter of 10 mm and a vehicle width direction length of 16 mm.

  When the adjustment bracket 18 is fixed to the crash box 20, the width pitch W between the reference holes 18A on both sides is accurately positioned, and the distance from the bumper side reference 10A to each reference hole 18A is equal. It is desirable to do.

  3 to 5, the radiator support member 12 has a radiator-side reference 12A that is, for example, a center position in the vehicle width direction, provided in the upper member 12U, and has a diameter larger than that of the reference hole 18A corresponding to the reference hole 18A. An intermediate bracket 22 having a relief hole 22 </ b> A is provided on both sides in the vehicle width direction corresponding to the adjustment bracket 18. The radiator support member 12 is provided with a lock reference 12B for installing a hood lock mechanism (not shown) based on the radiator side reference 12A. In addition, a mounting bracket 26 for fixing a position in the vehicle width direction of a headlamp 24 (FIG. 11) as an example of an exterior part at the front portion of the vehicle body is fixed to the radiator support member 12 using bolts 28. The mounting bracket 26 is one of the standards for determining the mounting position of the headlamp 24. The means for fixing the bracket 26 to the radiator support member 12 is not limited to the bolt 28, and may be welding, for example.

  The intermediate bracket 22 is a plate-like member bent into an L shape, for example, and has a mounting surface 22D to the radiator support member 12 and a flange surface 22F having the same outer shape as the adjustment bracket 18. The attachment surface 22D is attached to the side surface 12C of the radiator support member 12 by, for example, two upper and lower bolts 30, and the bolt 30 is fastened to a nut 32 welded to the inside of the radiator support member 12 (FIG. 9). The flange surface 22F is formed with five holes corresponding to the adjustment bracket 18, and more specifically, four relief holes 22A corresponding to the reference holes 18A and the through holes 18C of the adjustment bracket 18 are long. One through hole 22B corresponding to the hole 18B is formed in one place. A nut 34 is welded to the back surface of the flange surface 22F corresponding to the through hole 22B (FIG. 9). The diameter of the escape hole 22A is 18 mm, for example, and is set to be larger than 16 mm of the through hole 18C of the adjustment bracket 18.

  6 and 7, the adjustment bracket 18 is overlapped from the front side of the intermediate bracket 22 with the bumper side reference 10A and the radiator side reference 12A aligned in the direction corresponding to the vehicle width direction, and the bolt 36 is attached. When fastened to the nut 34, the bumper reinforcement 10 is assembled to the radiator support member 12 to constitute the front unit 14. When matching the bumper side reference 10A and the radiator side reference 12A, a centering jig (not shown) is used.

  As shown in FIGS. 8 and 9, the front end of the front side member 16 is provided with a flange portion 38 that comes into contact with the intermediate bracket 22 when the front unit 14 is assembled, and a nut on the rear surface of the flange portion 38. 42 and 62 are welded. A centering bolt 40, which is an example of a positioning fastening member inserted from the reference hole 18 </ b> A through the escape hole 22 </ b> A, is screwed into the nut 42. As shown in FIG. 9, the centering bolt 40 includes, in addition to the threaded portion 40A formed on the tip side, a tapered portion 40B that gradually increases in diameter from the terminal end of the threaded portion 40A toward the bolt head side, and the tapered portion. And a large-diameter portion 40C having a constant diameter from the position of the maximum diameter of 40B to the bottom of the bolt head. The large-diameter portion 40C is smaller than the bolt head and is formed to have a diameter that fits into the reference hole 18A of the adjustment bracket 18 by, for example, clearance fit. As shown in FIG. 9, the length of the large diameter portion 40 </ b> C in this embodiment is shorter than the plate thickness of the adjustment bracket 18.

  Since the reference hole 18A communicates with the escape hole 22A in the state of the front unit 14, the centering bolt 40 can be inserted from the reference hole 18A through the escape hole 22A. The reference hole 18A needs to communicate with the escape hole 22A so that at least the threaded portion 40A of the centering bolt 40 passes.

  A centering bolt 60 inserted from the through hole 18 </ b> C remaining in the adjustment bracket 18 through the escape hole 22 </ b> A is fastened to the nut 62 on the rear surface of the flange portion 38. Similar to the centering bolt 40, the centering bolt 60 is formed with a threaded portion 60 </ b> A, a tapered portion 60 </ b> B, and a large-diameter portion 60 </ b> C, and is substantially the same component as the centering bolt 40. The diameter of the through hole 18C is, for example, 16 mm, which is larger than the large diameter portion 60C having a diameter of 14 mm. Therefore, positioning is not performed in the through hole 18C, and the centering bolt 60 is merely a fastening point with respect to the front side member 16 and The attachment rigidity of the front unit 14 to the member 16 is increased. In addition, since positioning is not performed in the through hole 18C, it is not necessary to use the centering bolt 60, and a general hexagon bolt or the like may be used.

  Thus, the front unit 14 is assembled to the front side member 16 by the centering bolts 40 and 60.

  In the illustrated embodiment, the bumper-side reference 10A and the radiator-side reference 12A are provided at the center position in the vehicle width direction, but are not necessarily limited to the center position, and the bumper reinforcement 10 and the radiator support member 12 in the vehicle width direction. If the positions can be aligned correctly, they may be provided at a position different from the center position in the vehicle width direction.

(Assembly method)
Next, a method for assembling the vehicle body front structure S will be described. First, in the first step, the bumper reinforcement 10 is provided with a bumper side reference 10A in the vehicle width direction, a pair of crash boxes 20 is fixed to the rear part of the bumper reinforcement 10, and further adjusted to the rear ends of the pair of crash boxes 20 The brackets 18 are fixed respectively. At this time, in FIG. 2, the width pitch W between the reference holes 18A on both sides is accurately positioned, and the distance from the bumper side reference 10A to each reference hole 18A is set to W / 2.

  Next, as shown in FIG. 3 to FIG. 5, in the second step, the upper member 12U of the radiator support member 12 is provided with a radiator-side reference 12A in the vehicle width direction, and the upper portion based on the radiator-side reference 12A A lock reference 12B for installing a hood lock mechanism is provided on the member 12U. Further, the intermediate bracket 22 in which the escape hole 22A having a diameter larger than that of the reference hole 18A is provided corresponding to the reference hole 18A is replaced with the vehicle width of the radiator support member 12 corresponding to the adjustment bracket 18 using the bolt 30. It adheres to the side surface 12C on both sides in the direction. Further, a mounting bracket 26 for fixing the position of the headlamp 24 in the vehicle width direction is fixed to the side surface 12 </ b> C of the radiator support member 12 using a bolt 28. The bracket 26 may be fixed to the side surface 12C by welding.

  Next, as shown in FIGS. 6 and 7, in the third step, the bumper side reference 10A and the radiator side reference 12A are made to coincide in a direction corresponding to the vehicle width direction using a centering jig. In the state, the adjustment bracket 18 is overlapped from the front side of the intermediate bracket 22, and the bolt 36 is inserted from the long hole 18 </ b> B in a state where the reference hole 18 </ b> A communicates with the escape hole 22 </ b> A (see FIG. 9). reference).

  The reference hole 18A needs to communicate with the escape hole 22A so that at least the threaded portion 40C of the centering bolt 40 passes, but the positions of the reference hole 18A and the escape hole 22A are processed with high accuracy. If it is, the bumper reinforcement 10 and the radiator support member 12 are appropriately centered to achieve an appropriate communication state. Since the bolt 36 is fastened to the nut 34 of the intermediate bracket 22 through the long hole 18B of the adjustment bracket 18, it can be fastened even if the welding position of the nut 34 varies slightly in the direction corresponding to the vehicle width direction. Is possible.

  In this manner, the bumper reinforcement 10 is assembled to the front side of the radiator support member 12 to form the front unit 14, so that the bumper side reference 10A and the radiator side are already in the state of the front unit 14 before being assembled to the vehicle body side. The reference 12A can be aligned in a direction corresponding to the vehicle width direction. In the state of the front unit 14, the adjustment bracket 18 and the intermediate bracket 22 may be welded.

  Next, in the fourth step, the front unit 14 is assembled to the front side member 16. Specifically, as shown in FIGS. 1, 8, and 10, the four centering bolts 40 that fit the reference hole 18 </ b> A after the intermediate bracket 22 of the front unit 14 is aligned with the front side member 16. Is inserted into the reference hole 18A and fastened to the nut 42 of the front side member 16 through the escape hole 22A. At this time, as shown in FIG. 9, the centering bolt 40 is fitted into the reference hole 18A in the large-diameter portion 40C and is in a state of being substantially integrated with the adjustment bracket 18, so that the screw portion 40A of the centering bolt 40 is When tightened to the nut 42 of the front side member 16, the position of the centering bolt 40 does not change, and the front side member 16 side is drawn to the position of the centering bolt 40 and corrected. The escape hole 22A is formed with a larger diameter than the reference hole 18A, and therefore does not interfere with the centering bolt 40.

  Then, when the four centering bolts 60 are tightened from the through holes 18C remaining in the adjustment bracket 18, the assembly of the front unit 14 is completed. The diameter of the through hole 18C is, for example, 16 mm, which is larger than the large diameter portion 60C having a diameter of 14 mm. Therefore, positioning is not performed in the through hole 18C, and it merely serves as a fastening point for the front side member 16. In addition, since positioning is not performed in the through hole 18C, it is not necessary to use the centering bolt 60, and a general hexagon bolt or the like may be used. In the present embodiment, in consideration of convenience during assembly work, the centering bolt 60 substantially the same as the centering bolt 40 used for the reference hole 18A is used for the through hole 18C in order not to increase the types of bolts. .

Thus, in the fourth step, it is possible to assemble the front unit 14 to the front side member 16 while correcting the front side member 16 with the centering bolt 40, thereby causing variations in the front side member 16 on the vehicle body side. Can be suppressed. Further, since the bumper side reference 10A and the radiator side reference 12A coincide with each other in the vehicle width direction, as shown in FIG. 11 , the grille 44, the bumper cover 46, and the headlamp 24 assembled using these standards. The mounting position of the hood 48 and the like becomes appropriate, and the mounting accuracy of these exterior parts naturally increases.

  Specifically, in FIGS. 1 and 11, the grill 44 and the bumper cover 46 can be accurately attached to the center in the vehicle width direction by appropriately using the bumper side reference 10 </ b> A and the radiator side reference 12 </ b> A. In addition, for example, the lock mechanism (not shown) of the hood 48 that covers the engine compartment is attached using the lock reference 12B provided based on the radiator-side reference 12A, so that the hood 48 has high installation accuracy. Furthermore, since the mounting bracket 26 can be used as a reference when mounting the headlamp 24, it is easy to increase the installation accuracy by making the gap P between the left and right of the grill 44 equal to the headlamp 24.

  As described above, according to the assembling method of the vehicle body front structure, the relative positional accuracy between the front side member 16 and the bumper side reference 10A and the radiator side reference 12A can be increased, and the vehicle body front structure is assembled to the vehicle body front portion. The accuracy of building parts can be increased. In addition, this makes it possible to improve the appearance and improve the quality of the vehicle.

It is a perspective view of a vehicle body front part structure. It is a front view of the bumper reinforcement to which the adjustment bracket is fixed. It is a disassembled perspective view of a radiator support member, an intermediate bracket, and a mounting bracket. It is a perspective view of a radiator support member to which an intermediate bracket and a mounting bracket are fixed. It is a front view of a radiator support member to which an intermediate bracket and a mounting bracket are fixed. It is a disassembled perspective view which shows the state which assembles bumper reinforcement with respect to a radiator support member. FIG. 4 is a perspective view of a front unit in which bumper reinforcement is assembled to a radiator support member. It is a disassembled perspective view which shows the state which assembles | assembles a front unit with respect to a front side member. FIG. 9 is a cross-sectional view taken along arrow 9-9 in FIG. 1 showing a fastening state of the front side member and the front unit in the vehicle body front structure. It is a partial cross-sectional top view of the vehicle body front part structure where the front part unit was assembled | attached. It is a front view which shows the hood in a vehicle, installation of a bumper cover, and the installation state between a grille and a headlight.

10 Bumper reinforcement 10A Bumper side reference 12 Radiator support member 12A Radiator side reference 12B Lock reference 14 Front unit 16 Front side member (vehicle body side mounting part)
18A Reference hole 18C Through hole 18 Adjustment bracket 22 Intermediate bracket 22A Escape hole 24 Headlamp (exterior part)
26 Mounting bracket 40 Centering bolt (fastening member)
40A thread
40B taper part
40C large diameter part 44 Grill (exterior parts)
46 Bumper cover (exterior parts)
48 Hood (Exterior parts)
S body front structure

Claims (10)

A first step of fixing a pair of adjustment brackets provided with a bumper-side reference in the vehicle width direction in the bumper reinforcement, and a positioning reference hole provided at the rear part of the bumper reinforcement for use in assembling to the vehicle body-side mounting portion; ,
A radiator-side reference in the vehicle width direction is provided on the radiator support member, and an intermediate bracket provided with at least a relief hole larger than the reference hole corresponding to the reference hole is supported by the radiator corresponding to the adjustment bracket. A second step of adhering to both sides of the member in the vehicle width direction;
With the bumper side reference and the radiator side reference aligned in a direction corresponding to the vehicle width direction, the adjustment bracket is stacked from the front side of the intermediate bracket, and the reference hole communicates with the escape hole. A third step of assembling the bumper reinforcement on the front side of the radiator support member to form a front unit;
Said intermediate bracket of the front section unit by aligning on the vehicle body side mounting portion, the fastening member for positioning having a large diameter portion which is formed with a diameter enough to fit in a fit the reference holes and gaps, the reference A fourth step of inserting from the hole, fastening to the vehicle body side attachment portion through the relief hole, and assembling the front unit to the vehicle body side attachment portion while correcting the vehicle body side attachment portion with the fastening member;
A method of assembling the vehicle body front part structure characterized by comprising: The adjustment bracket is formed with a through hole that is smaller in diameter than the escape hole that does not correspond to the reference hole and larger in diameter than the large diameter portion of the fastening member and communicates with the escape hole.
  The method of assembling the vehicle body front part structure according to claim 1, wherein, in the fourth step, the fastening member is inserted also from the through hole, and is fastened to the vehicle body side attachment portion through the relief hole not corresponding to the reference hole. The fastening member has a threaded portion formed on the distal end side and a tapered portion that gradually increases in diameter from the terminal end of the threaded portion to the bolt head side, and the large diameter portion is the maximum diameter of the tapered portion. The method for assembling the vehicle body front structure according to claim 1 or 2, wherein a centering bolt having a constant diameter from a position to a neck of the bolt head and shorter than a plate thickness of the adjustment bracket is used. In the second step, the mounting bracket for determining the vehicle width direction position of the exterior parts of the vehicle body front portion, in any one of claims 1 to 3, characterized in that fixed to the radiator support member A method of assembling the vehicle body front structure as described. 5. The vehicle body front structure according to claim 1 , wherein, in the second step, a lock reference for installing a hood lock mechanism is provided based on the radiator side reference. Assembly method. A bumper reinforcement in which a pair of adjustment brackets having a reference hole for positioning the vehicle body side attachment portion at the time of assembly to the vehicle body side attachment portion are fixed to the rear portion, while a bumper side reference in the vehicle width direction is provided,
A radiator side reference in the vehicle width direction is provided, and an intermediate bracket having an escape hole larger in diameter than the reference hole corresponding to at least the reference hole is provided on both sides in the vehicle width direction corresponding to the adjustment bracket, A radiator support in which a front unit can be configured by assembling the bumper reinforcement so that the adjustment bracket is overlapped from the front side in a state where the bumper side reference and the radiator side reference are matched in a direction corresponding to the vehicle width direction. It includes a member,
In the state where the bumper reinforcement and the radiator support member become the front unit, the reference hole communicates with the escape hole,
The front unit includes a positioning fastening member fastened to the vehicle body side mounting portion in a state where the front unit is inserted from the reference hole through the relief hole and is fitted to the reference hole in the large diameter portion by clearance fit. The vehicle body front structure assembled to the side mounting part . The adjustment bracket has a through hole that is smaller in diameter than the escape hole that does not correspond to the reference hole and larger in diameter than the large diameter portion of the fastening member and communicates with the escape hole.
  The vehicle body front structure according to claim 6, wherein the fastening member is also inserted through the through hole and fastened to the vehicle body side attachment portion through the escape hole not corresponding to the reference hole. The fastening member has a threaded portion formed on the tip side, and a tapered portion that gradually increases in diameter from the terminal end of the threaded portion to the bolt head side, and the large diameter portion is the maximum diameter of the tapered portion. The vehicle body front part structure according to claim 6 or 7, wherein the vehicle body front part structure is a centering bolt having a constant diameter from a position to a neck of the bolt head and shorter than a plate thickness of the adjustment bracket. The vehicle body according to any one of claims 6 to 8, wherein a mounting bracket for fixing a position in a vehicle width direction of an exterior part at a front portion of the vehicle body is fixed to the radiator support member. Front structure. The said radiator support member, locking the reference for installing the hood lock mechanism, according to any one of claims 6 to 9, characterized in that provided on the basis of the radiator-side reference Body front structure.

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