JPH09309460A - How to assemble the front of the car - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] When a resin part is used in the front part of a vehicle body, assembly is performed while ensuring rigidity. SOLUTION: A step of positioning a front cross member that joins a front end portion of a structural member in a vehicle width direction to a predetermined position (steps S1 and 2), and a front cross member is arranged in a vehicle width direction at a predetermined position in an engine compartment. A step of fastening the positioning member to the pair of structural members and temporarily joining them (step S3), a step of joining the structural member and the front cross member (step S4) respectively, a front fender to the structural members, and an engine compartment. Step of attaching hoods that open and close (steps S5 and S6)
And a step of removing the positioning member (step S8),
Bonding the integrally molded radiator core to the structural member (step S9).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a vehicle body front, and more particularly to a method for assembling a vehicle body front using a resin radiator core.

[0002]

2. Description of the Related Art Assembling of a vehicle body of an automobile or the like is performed by sequentially joining parts formed by pressing in advance by welding, fastening, etc. The outline of the assembly of these vehicle bodies is as follows.

1. Floor main process Assembly of engine compartment, front floor, rear floor, rear members, etc. 2. Body main process Assembly of pillars, body side of fenders, roof, air box, etc. 3. Metal process Assembling of hood, door, trunk lid, etc., brazing process, etc. After finishing the above-mentioned 1 to 3 car body assembling process, after the painting process, it is put into a camouflage process of mounting lamps and interior decoration.

The above 1. As shown in FIG. 7, the engine compartment 10 assembled in the floor main process constitutes a front part of the vehicle body and houses the engine and auxiliary equipment. The engine compartment 10 extends substantially parallel to the front of the vehicle body from the dash lower 18. At the front end portions of the hood ridges 11, 11 arranged, the radiator core upper 9 and the radiator core lower 2'arranged in the vehicle width direction are connected to each other, and the engine compartment 10
Is defined in a box shape to ensure a predetermined rigidity.

In a state where the rigidity of the engine compartment 10 is ensured by the radiator core upper 9 and the radiator core lower 2 ', the body main process and the metal process are advanced, and the outer panel panels such as the front fender 3 and the engine hood 4 are sequentially installed. In addition to the mounting, the locating pin or the locating hole (not shown) is used as a reference, and the building adjustment such as the adjustment of the gap between the front fender 3 and the engine hood 4 and the surface difference is performed manually.

[0006]

By the way, in recent years, modularization of vehicle body parts made of resin or the like has become widespread.
For example, it is known that a radiator core or the like is integrally formed of resin, and such a resin component is assembled into a vehicle body in a camouflage process after the painting process.

However, in the above-described conventional method for assembling the front portion of the vehicle body, as shown in FIG. 7, since the rigidity of the engine compartment 10 is secured by the radiator core upper 9 and the radiator core lower 2 ',
When the radiator core upper integrally molded with resin is applied, if the engine compartment 10 is assembled without the radiator core upper 9 assembled, the rigidity is insufficient, and the assembly accuracy in the body main process, metal process, etc. is secured. In some cases, it is difficult to maintain the quality, and in addition, the adjustment of the construction of the front fender 3 and the engine hood 4 requires skill and a great deal of labor, which may reduce the productivity.

Therefore, the present invention has been made in view of the above problems, and even when a resin component is applied to the front portion of the vehicle body,
The objective is to assemble the engine compartment with high accuracy while ensuring the rigidity of the engine compartment, and at the same time, to easily adjust the building construction of the front fender and engine hood.

[0009]

A first aspect of the present invention is arranged at a predetermined interval in the vehicle width direction and at the front of the vehicle body.
A pair of structural members that support the front fender, a front cross member that connects the front end portions of the pair of structural members in the vehicle width direction, and a predetermined engine compartment by connecting these structural members and front cross members to the vehicle body, respectively. In the method for assembling the front part of the vehicle body, the step of positioning the pair of structural members and the front cross member at a predetermined position; and the step of disposing the front cross member at a predetermined position in the engine compartment in the vehicle width direction, A step of fastening a detachable positioning member that temporarily connects the pair of structural members, a step of connecting the structural member and the front cross member, a front fender attached to the structural member, and the engine compartment The step of attaching a hood that opens and closes, and And a step of removing the-decided Me member, and bonding the radiator core which is previously formed into a front end portion of the pair of structural members.

In a second aspect based on the first aspect, the positioning member is formed at both ends with joint portions bent in the vertical direction of the vehicle body, and is fastened to the structural member via these joint portions. .

In a third aspect based on the second aspect, the connecting portion of the positioning member is provided with a guide portion having a predetermined width and protruding from a gap between the hood and the front fender. In the step of attaching the hood, the front fender and the hood are positioned so as to sandwich the guide portions provided at both ends of the positioning member.

In a fourth aspect based on the third aspect, the guide portions provided at both ends of the positioning member are supported so as to be displaceable at least in a vertical direction and a vehicle width direction within a predetermined range, In the mounting process of the front fender and the hood, the positioning is performed while absorbing the error of the front fender and the hood.

[0013]

Therefore, according to the first aspect of the present invention, the pair of structural members, which are arranged at a predetermined interval in the vehicle width direction and at the front of the vehicle body and support the front fender, and the front end portions of the pair of structural members are provided. After positioning the front cross member to be joined in the vehicle width direction at a predetermined position, a positioning member arranged in the vehicle width direction at a predetermined position in the engine compartment is fastened to a pair of structural members and temporarily joined. Later, the structural member and the front cross member are respectively joined by welding or the like to define an engine compartment, the front fender is attached to the structural member, and the hood for opening and closing the engine compartment is attached, respectively, and then the positioning member is removed. By connecting a preformed radiator core to the front ends of the pair of structural members, a radiator core Until attaching a, the rigidity of the engine compartment to secure the positioning member, can be assembled in the vehicle body front portion with high accuracy.

According to a second aspect of the present invention, the positioning member is formed at both ends with joint portions which are bent in the vertical direction of the vehicle body, and is fastened to the structural member through these joint portions. In the step of connecting the engine compartments, the rigidity of the engine compartment can be ensured while omitting the connection of the radiator core upper as in the conventional assembly method.

According to a third aspect of the invention, a guide portion having a predetermined width is provided at a connecting portion at both ends of the positioning member so as to project from a gap between the hood and the front fender, and the front fender and the hood are mounted in the mounting step. By positioning the front fender and the hood so as to sandwich these guide parts, the gap between the front fender and the hood can be set to a predetermined value according to the width of the guide part.
While ensuring the rigidity of the engine compartment and assembling it with high accuracy, it is possible to easily and quickly adjust the building construction of the front fender and the hood.

Further, in the fourth aspect of the invention, since the guide portion is supported so as to be displaceable at least in a predetermined range in the vehicle body vertical direction and the vehicle width direction, a molding error of the front fender and the hood is caused in a mounting process of the front fender and the hood. Positioning can be performed with high accuracy while absorbing the assembly error and the assembly error of the front fender and the hood.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, an engine compartment 10 defined by a dash lower 18, hood ridges 11 and 11, and a front cross member 2 is defined in a front portion of a vehicle body 1.

Hood ridge 1 as a pair of structural members
Through holes 15, 15 for fastening the detachable rod-shaped or plate-shaped temporary jigs 5 at predetermined positions 1 and 11.
Is formed.

The hood ridge 11, as shown in FIG.
A hood ridge upper 12 extending in the vehicle width direction, a hood ridge lower 13 arranged in the vertical direction, and a hood ridge upper 12 and a reinforcement 14 connecting the lower 13 are formed in a box shape, and the through hole 15 is formed. A nut 16 is fixed by welding or the like inside the box-shaped hood ridge 11 having an opening facing the engine compartment 10 and a through hole 15 opening.

The hood ridges 11 and 11 are extended to the vicinity of the front cross member 2, and the front ends of the hood ridges 11 and 11 serve as radiator cores integrally molded in advance with resin as shown in FIG. Stiffeners 17, 17 for connecting the radiator core assembly 8
Are respectively formed.

Engine compartment 1 as described above
Regarding the method of assembling the front part of the car body 1 mainly consisting of 0,
This will be described in detail with reference to the flowchart of FIG.

First, steps S1 to S4 correspond to "1. Floor main process" of the conventional example, and steps S1 and S4 are performed.
In FIG. 2, the components such as the hood ridges 11, 11 and the front cross member 2 that form the engine compartment 10 are positioned and clamped on a jig (not shown).

Next, in step S3, as shown in FIG.
The temporary jig 5 as a positioning member that traverses the engine compartment 10 in the vehicle width direction has a through hole 15,
It is fastened to the hood ridges 11, 11 via 15.

Here, as shown in FIG. 2, at both ends of the temporary jig 5, an L-shaped connecting portion 6 bent in the vertical direction,
A hood 6 above the front cross member 2 is formed by fastening a bolt 7 inserted into a through hole (not shown) formed in the coupling portion 6 to the nut 16 through the through hole 15 of the hood ridge 11. The ridges 11 and 11 are firmly coupled by the temporary jig 5 that traverses the engine compartment 10 in the vehicle width direction, and the rigidity of the engine compartment 10 can be ensured to be equal to that of the conventional example.

Then, after the parts are connected by spot welding or the like in step S4, the vehicle body 1 is sent to the "2. body main process" and "3. metal process" shown in the conventional example, and step S5 is performed. , S6, front fender 3
And the engine hood 4 is positioned and assembled.

The front fender 3 and the engine hood 4 can be assembled with a predetermined accuracy as in the conventional case because the rigidity of the engine compartment 10 is ensured as in the conventional example.

Then, in the painting process of step S7, the vehicle body 1
When the painting is completed, in step S8, the temporary jig 5 is removed from the engine compartment 10 by removing the bolt 7 to enter the camouflage process, and in step S9, as shown in FIG. 3, it is integrally molded with resin. Radiator core assembly 8 is stiffener 1
It is connected to the vehicle body 1 via 7, 17.

In this way, the detachable temporary jig 5 is joined to the engine compartment 10 in the floor main process, and then the body main process, the metal process, and the painting process are sequentially passed through to make the resin radiator core assembly 8 Since the temporary jig 5 is removed immediately before mounting (when the disguise process is started), the resin radiator core assembly 8 can be assembled with high accuracy while ensuring the rigidity of the engine compartment 10.

Further, until the resin radiator core assembly 8 is assembled, there is no radiator core upper 9 as in the prior art example, so that the parts can be easily assembled in the engine compartment 10. Therefore, the workability can be improved.

Further, since the temporary jig 5 is connected to the vertical surface of the hood ridges 11 and 11 by the connecting portions 6 and 6 which are bent in L shapes at both ends, these hood ridges 11 and 11 are connected.
The installation accuracy of the front fenders 3 and 3 attached to the motor 11 can be improved as compared with the above-mentioned conventional example, and the adjustment of the gap and surface difference between the front fender 3 and the engine hood 4 can be easily performed. Therefore, it is possible to improve productivity by not requiring skill.

FIGS. 5 and 6 show the second embodiment, in which the clearance δ between the front fender 3 and the engine hood 4 is adjusted in the connecting portions 6, 6 of the temporary jig 5 of the first embodiment. The gap adjusting members 20 and 20 are provided respectively, and the other points are the same as those in the first embodiment.

Pins 61, 62 are respectively provided on the joint portions 6, 6 formed at both ends of the temporary jig 5 in the vertical direction at predetermined intervals in the vehicle front-rear direction.
A gap adjusting member 20 is attached to the unit 2 so as to be displaceable within a predetermined range.

That is, the gap adjusting member 20 has a connecting portion 6
Leg portions 20B, 20B that engage with each other in the front-back direction of the vehicle body are formed downward in the drawing, and the leg portion 20B has an elongated hole 21 that engages with an upper pin 61, and a lower pin 61 that engages with the lower pin 61. A notch 22 is formed, and the elongated hole 21 allows vertical displacement of the gap adjusting member 20 within a predetermined range.
The notch 22 is formed so as to allow the gap adjusting member 20 to swing in the vehicle width direction within a predetermined range.

A guide portion 20A protruding upward from the gap between the engine hood 4 and the front fender 3 is formed above the gap adjusting member 20, and the dimension of the guide portion 20A in the vehicle width direction is the same as that of the engine hood 4. It is set to be substantially equal to the predetermined gap δ of the front fender 3.

The temporary jig 5 ensures the rigidity of the engine compartment 10 in the same manner as described above, and further, in the process of assembling the engine hood 4 and the front fender 3,
Only by assembling the front fender 3 and the engine hood 4 so as to sandwich the guide portion 20A of the gap adjusting member 20 protruding upward from both ends of the temporary jig 5, the gap between the engine hood 4 and the front fender 3 is a predetermined value δ.
Therefore, the productivity can be further improved by quickly and highly accurately assembling and adjusting the installation of the front hood 3 and the engine hood 4 without requiring skill and labor.

Since the gap adjusting member 20 can be displaced or swung in a predetermined range in the vertical direction and the vehicle width direction,
It is possible to reliably manage the gap δ while allowing an assembling error of each component.

Although the temporary jig 5 is rod-shaped or plate-shaped in the above embodiment, it is not shown in the drawing.
By constructing with a member having a character-shaped cross section, the rigidity can be further improved, and the improvement of the assembly accuracy can be promoted.

Further, in the above embodiment, when the radiator core assembly 8 constitutes the radiator core upper of the conventional example, the front cross member 2 may be the same radiator core lower 2'as the conventional example.
Similar to the above, the rigidity of the vehicle body can be ensured until the radiator core assembly 8 is assembled.

[0040]

As described above, according to the first aspect of the present invention, a pair of structural members are provided at a predetermined interval in the vehicle width direction and in front of the vehicle body, and support a front fender, and the pair of structures. The front cross member that joins the front ends of the members in the vehicle width direction is positioned at a predetermined position, and then the positioning members arranged in the vehicle width direction at a predetermined position in the engine compartment are fastened to the pair of structural members. After temporarily joining, the structural member and the front cross member are joined by welding or the like to define an engine compartment, and the front fender and the hood for opening and closing the engine compartment are attached to the structural member, and then the positioning member is attached. By removing and then coupling the preformed radiator core to the front ends of the pair of structural members, By securing the rigidity of the engine compartment with the removable positioning member until the radiator core is mounted, the front part of the vehicle body can be assembled with high precision even when resin parts are used, ensuring quality. can do.

According to the second aspect of the invention, the positioning member is formed at both ends with joint portions bent in the vertical direction of the vehicle body and is fastened to the structural member through these joint portions, so that the structural member and the front cross member are joined together. In the process of connecting the parts, the front part of the vehicle body can be assembled with high accuracy even when resin parts are adopted by securing the rigidity of the engine compartment while omitting the connection of the radiator core upper like the conventional assembly method. It can be done and quality can be ensured.

According to a third aspect of the present invention, guide portions having a predetermined width are provided at the connecting portions at both ends of the positioning member so as to project from the gap between the hood and the front fender, and the front fender and the hood are mounted in the mounting step. By positioning the front fender and the hood so as to sandwich these guide parts, the gap between the front fender and the hood can be set to a predetermined value according to the width of the guide part.
While ensuring the rigidity of the engine compartment and assembling it with high accuracy, it is possible to easily and quickly adjust the building construction of the front fender and the hood without increasing the skill, thereby improving the productivity.

Further, in the fourth aspect of the invention, since the guide portion is supported so as to be displaceable at least in the vertical direction of the vehicle body and the vehicle width direction within a predetermined range, the front fender and the hood are formed with a molding error in the mounting process of the front fender and the hood. Positioning can be performed with high accuracy while absorbing assembly errors and assembly errors, and the front fender and hood can be easily and quickly adjusted to improve productivity.

[Brief description of drawings]

FIG. 1 is a perspective view of an engine compartment showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a perspective view of the engine compartment showing how the resin radiator core assembly is assembled.

FIG. 4 is a flowchart showing a flow of the vehicle body assembly.

FIG. 5 is a perspective view of a gap adjusting member provided in the temporary jig according to the second embodiment.

FIG. 6 is a sectional view of the vehicle body showing how the clearance adjustment member adjusts the construction of the engine hood and the front fender.

FIG. 7 is a perspective view of an engine compartment showing a conventional example.

[Explanation of symbols]

 1 Vehicle Body 2 Front Cross Member 3 Front Fender 4 Engine Hood 5 Temporary Jig 6 Coupling 7 Bolt 8 Radiator Core Assembly 10 Engine Compartment 11 Hood Ridge 12 Hood Ridge Upper 13 Hood Ridge Lower 14 Reinforce 15 Through Hole 16 Nut 17 Stiffener 20 Gap adjusting member 21 Long hole 22 Notch 61, 62 pin

Claims (4)

[Claims] 1. A pair of structural members, which are arranged at a predetermined interval in the vehicle width direction and in front of the vehicle body and support a front fender, and a front end portion of the pair of structural members are joined in the vehicle width direction. In a method of assembling a front cross member and a front part of a vehicle body that defines a predetermined engine compartment by respectively connecting the structural member and the front cross member to a vehicle body, the pair of structural members and the front cross member are placed at predetermined positions. A step of positioning, a step of fastening a removable positioning member that is arranged in a vehicle width direction at a predetermined position in the engine compartment, and temporarily couples the pair of structural members; Attaching the front fenders to the structural members and the steps of connecting the front cross members respectively. A front of the vehicle body, including a step of attaching a hood that opens and closes the engine compartment, a step of removing the positioning member, and a step of coupling a preformed radiator core to front end portions of the pair of structural members. How to assemble the parts. 2. The front of the vehicle body according to claim 1, wherein the positioning member is formed at both ends with joint portions bent in a vertical direction of the vehicle body and is fastened to the structural member via the joint portions. How to assemble the parts. 3. The connecting portion of the positioning member includes a guide portion having a predetermined width that projects from a gap between the hood and the front fender, and is provided at both ends of the positioning member in the step of attaching the front fender and the hood. The method for assembling the front portion of the vehicle body according to claim 2, wherein the front fender and the hood are positioned so as to sandwich the guide portion. 4. Guide portions provided at both ends of the positioning member are supported so as to be displaceable at least in a predetermined range in a vehicle body vertical direction and a vehicle width direction, and in the step of attaching the front fender and the hood, the front fender and the hood are attached. The method for assembling the front portion of the vehicle body according to claim 3, wherein the positioning is performed while absorbing the error of the hood.