JPH0578467B2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (1) Industrial application field The present invention relates to a method of assembling a motor vehicle.

(2) Prior Art Conventionally, as a method for assembling an automobile, the method disclosed in, for example, Japanese Unexamined Patent Publication No. 61-21871 is known.

(3) Problems to be solved by the invention By the way, in the above conventional technology, floor panels, side panels, roof panels, bonnets,
The body is constructed by assembling various components such as the trunk lid, fender, and doors by welding, etc.
After painting the body, parts are assembled in groups.

For this reason, in the painting process, a body with a complicated shape is painted, and painting is performed on a vertical surface, which increases the amount of paint dripping and makes it difficult to make the paint film uniform. Moreover, since the workpiece is large, the space used for the pretreatment tank, coating room, drying room, etc. used in the painting process is large, and the equipment cost is also large.

In addition, in the conventional method described above, the assembly process is grouped into an automated zone and a manual zone, but since parts are assembled to the completed body, the manual zone is inevitably placed in the automated zone due to the assembly order. Even in manual zones, the transportation of parts becomes tact transportation, which is unreasonable. Furthermore, if the assembly machine in the automation zone breaks down, assembly is carried out in the preliminary work zone, but this will affect the automatic assembly process in the subsequent process.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method for assembling an automobile that solves the problems associated with body painting and facilitates automation of assembly.

B. Structure of the Invention (1) Means for Solving the Problems According to the method of the present invention, a body can be constructed by connecting a plurality of substantially planar body constituent members using a non-welded connection structure, After each body component is individually painted, the floor assembly process involves assembling the parts to the underbody, which is part of the body, to form the floor assembly, and then assembling the front wheels, front suspension, engine, etc. A front suspension assembly process that forms the front suspension assembly; a rear suspension assembly process that assembles the rear wheels, rear suspension, fuel tank, exhaust system, etc. to form the rear suspension assembly; These steps are carried out independently and in parallel downstairs, as well as a door assembly process in which parts are assembled to the door to form a door assembly, and an indoor unit in which parts placed inside the vehicle are assembled to form an indoor unit. The assembly process involves assembling parts to the front body, which is part of the body, to form the vehicle front assembly, and the main shell part, which consists of side panels, roof panels, trunk lid, etc. The process of assembling the main shell parts for the above-mentioned main shell parts is carried out independently and in parallel on the floor, and the process of assembling the vehicle front assembly to the main shell part to form the upper part of the vehicle is carried out on the floor. After the indoor unit that has been lowered from the upper floor to the lower floor is connected to the floor assembly, the front suspension assembly and the rear suspension assembly are joined together to form the lower part of the vehicle. The lowered upper part of the vehicle and the lower part of the vehicle are connected to each other downstairs to assemble the automobile.

(2) Effect When a car is assembled using the method described above,
Multiple components that make up the body can be painted individually, making it possible to perform flat surface painting to improve painting quality, and reduce painting equipment costs by downsizing the painting workpiece. becomes. Moreover, since each assembly process is performed in parallel and the assembled assemblies are connected, it is easy to automate the assembly. Moreover, the parts that make up the lower part of the vehicle were assembled downstairs.
Since the parts that make up the upper part of the vehicle are assembled on the floor, the upper part of the vehicle and the lower part of the vehicle can be assembled smoothly, and the indoor unit can be assembled on the floor, making it easier to assemble the indoor unit. Since the floor assembly is assembled downstairs, the indoor unit can be smoothly assembled to the floor assembly.

(3) Embodiment Hereinafter, an embodiment of the present invention will be explained with reference to the drawings. First, in FIG. A door assembly line 6 and a main shell assembly line 7 are arranged independently from each other, and on the 1st floor 1F, a floor assembly line 2, a front suspension assembly line 3, The rear suspension assembly lines 4 are arranged independently from each other.

During assembly on assembly lines 1 to 7, the automobile body is assembled using a plurality of substantially planar body structural members, such as an underbody B1, a front fender B2, a roof panel B3, a side panel B4, and a bonnet. B5, door B6, trunk lid B7, rear panel B8, etc., are combined into a joint structure excluding welding such as tightening, caulking, and adhesive, and each component member B1 to B8 is:
It is prepared in advance by being painted on a painting line (not shown).

An opening 9 for lowering the indoor unit 8 to the first floor 1F is provided on the second floor 2F, and the indoor unit assembly line 1 is set in a straight line toward the opening 9. This indoor unit assembly line 1 is for assembling and integrating parts arranged in the vehicle interior, and as shown in FIG.
1, front seat seat 12, rear seat seat 13,
A console box 14 and various pedals (not shown) are sequentially assembled. The support panel 10 is specially prepared for assembling the indoor unit 8, and is formed to have the strength necessary to construct the indoor unit 8.

This indoor unit assembly line 1, like the floor assembly line 2, front suspension assembly line 4, vehicle front assembly line 5, and main shell assembly line 7, uses a floor conveyor to sequentially assemble the units. Attachment will be made. Further, in each of the assembly lines 1 to 5 and 7, tact conveyance is performed by an electric train type roller conveyor or a free flow conveyor depending on the manner of assembly.

The floor assembly line 2 is set in a straight line with the end position being below the opening 9,
In this floor assembly line 2, an underbody B1 is constructed by welding together a chassis and a floor panel.
Then, the floor assembly 16 is assembled by assembling the dart board 15, a power steering oil tank (not shown), an auto cruiser actuator, a heater relay box, a heater vacuum tank, an ignition coil, etc.

Indoor unit 8 being lowered to the first floor through opening 9
is connected to the floor assembly 16, thereby forming an indoor unit assembly 17.

The front suspension assembly line 3 and the rear suspension assembly line 4 are set and arranged so as to face each other on a straight line parallel to the floor assembly line 2 on the first floor 1F.

The front suspension assembly line 3 assembles the front wheels 18, front suspension 19, engine 20, etc. to each other to form the front suspension assembly 21, and the rear suspension assembly line 4
The rear wheel 22, rear suspension 23, fuel tank 24, exhaust system 25, etc. are assembled together to form the rear suspension assembly 26, and both assemblies 21 and 26 are joined together to form the suspension assembly. An assembly 27 is constructed.

This suspension assembly 27 is assembled to the indoor unit assembly 17 at a position slightly advanced from the floor assembly line 2, thereby forming a vehicle lower part 28.

On the other hand, on the main shell assembly line 7 set up on the 2nd floor, the assembly of side panels B4, roof panel B5, rear panel B8, trunk lid B7, etc., as well as the installation of windshields and rear glasses, etc. are carried out. A main shell portion 31 is configured.

In addition, the door assembly line 6 constructs the door assembly 32 by attaching seal rubber, harnesses, door glass, etc. to the door B6 using an overhead conveyor with tact conveyance or continuous conveyance. Door assemblies 32 are attached to both left and right sides of the shell portion 31, respectively.

Further, on the vehicle front assembly line 5, a front fender B2, a bonnet B5, a bulk head (not shown), a radiator tank, a bumper, etc. are assembled together to form a vehicle front assembly 33. Solid 33 and main shell part 31
The vehicle upper part 34 is constructed by mutually coupling these.

An opening 35 is provided on the second floor 2F, corresponding to the assembly position of the vehicle lower part 28 on the first floor 1F. , the car 36 is finally assembled.

For coupling the vehicle lower part 28 and the vehicle upper part 34, a coupling structure as shown in FIG. 3, for example, is used. That is, the underbody B1 that constitutes the vehicle lower part 28 and the side panel B4 that constitutes the vehicle upper part 34 are fitted to each other with the adhesive 37 interposed between them, so that the underbody B1 and the side panel B4 are mutually fitted. The rivet 40 with the enlarged diameter portion 40a facing downward is inserted into the correspondingly drilled through holes 38 and 39, and by pulling out the pin 41 inserted into the rivet 40 downward, the upper part of the rivet 40 is removed. is expanded. Therefore, the underbody B1 and the side panel B4 are bonded to each other by the rivets 40 and bonded by the adhesive 37, and thereby the vehicle lower part 28 and the vehicle upper part 34 are bonded to each other, and the automobile 36 is assembled. It will be done.

Next, to explain the operation of this embodiment, the body includes a plurality of body constituent members B1 each having a substantially planar shape.
-B8 are connected by a connection structure that excludes welding such as tightening, caulking, and adhesion, so the body can be assembled after each body component member B1 to B8 is individually painted. Therefore, in the painting process, it is possible to apply the painting from above while each of the body constituent members B1 to B8 is arranged substantially horizontally. Therefore, paint dripping does not occur, adhesion efficiency can be improved, repair work is not required, paint consumption can be reduced, and energy can be saved, and the paint film can be evened out. coating quality can be improved.
Further, since each of the body constituent members B1 to B8 is relatively small, equipment such as a pretreatment tank, a painting room, and a drying room in the painting process can be small, and equipment costs can be reduced accordingly.

Each body component B1-B after painting is completed
8 is delivered to each assembly line 2 to 7 except indoor unit assembly line 1, and
At step 7, various parts will be assembled.
Each assembly line 2 to 7 is divided into groups suitable for assembly automation, and each assembly line 2 to 7 is divided into groups suitable for assembly automation.
At step 7, automatic assembly work is performed.

The indoor unit assembly line 1 is for integrally assembling parts to be placed in the vehicle interior, and by using the support panel 11, it is possible to assemble the assembled indoor unit 8 in one piece. It is assembled into the floor assembly 16. According to such an assembly procedure, automatic assembly is much easier than the conventional method of assembling parts into the body.

In addition, only the door assembly line 6 uses an overhead conveyor, and the other assembly lines 1 to 5 and 7 use floor conveyors, so each assembly line 1 to 5,
7, it is possible to improve the accuracy of the stop position and the horizontal level, thereby facilitating automatic assembly.

C. Effects of the Invention As described above, according to the method of the present invention, a plurality of substantially planar body constituent members can be combined to form a body using a non-welded joint structure, and each body constituent member can be individually connected. Since painting is performed, each body component member can be painted in a substantially horizontal position, and the quality of the painting can be improved.

In addition, the floor assembly process, front suspension assembly process,
Rear suspension assembly process, indoor unit assembly process,
We divided the processes into the vehicle front assembly process, door assembly process, and main shell assembly process, and parallelized each process.
Furthermore, since the process for constructing the upper part of the vehicle and the process for constructing the lower part of the vehicle are performed in parallel, each assembly process is divided into groups suitable for automatic assembly, making automatic assembly easier as a whole. Become.

In addition, the floor assembly process, front suspension assembly process, and rear suspension assembly process are performed downstairs, and the interior unit assembly process, vehicle front assembly process, door assembly process, and main shell assembly process are performed downstairs. Do it upstairs,
Furthermore, the process of lowering the indoor unit from the upper floor to the lower floor and assembling it into the floor assembly, and configuring the upper part of the vehicle is performed upstairs, and the process of configuring the lower part of the vehicle is performed downstairs, and the upper part of the vehicle is lowered from the upper floor to the lower floor. Since the automobile is assembled by assembling the upper and lower parts of the vehicle into the lower part of the vehicle, the overall arrangement becomes rational by separating and assembling the upper and lower parts of the vehicle into upper and lower floors.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a simplified perspective view showing the arrangement of an assembly line, FIG. 2 is a simplified perspective view of an indoor unit,
FIG. 3 is a longitudinal cross-sectional view showing the connection structure between the upper part of the vehicle and the lower part of the vehicle. 8... Indoor unit, 16... Floor assembly,
17...Indoor unit assembly, 18...Front wheel,
19...Front suspension, 20...Engine, 21...Front suspension assembly, 22...Rear wheel, 23...Rear suspension, 24...Fuel tank, 25...Exhaust system, 28... Vehicle lower part, 31...Main shell part, 32...Door assembly, 33...Vehicle front assembly, 34...Vehicle upper part, 36...Automobile, B1...Underbody,
B3...Roof panel, B4...Side panel,
B6...door, B7...trunk lid.

Claims (1)

[Claims] 1 A plurality of substantially planar body constituent members are combined to form a body using a non-welded joint structure, and after each body constituent member is individually painted, the underbody B1, which is a part of the body, is A floor assembly process in which parts are assembled to form the floor assembly 16; and a front suspension assembly in which the front wheels 18, front suspension 19, engine 20, etc. are assembled to form the front suspension assembly 21. The process and the rear suspension assembly process, in which the rear wheel 22, rear suspension 23, fuel tank 24, exhaust system 25, etc. are assembled to form the rear suspension assembly 26, are carried out independently and in parallel downstairs. At the same time, there is a door assembly process in which parts are assembled to the door B6 to form the door assembly 32, an indoor unit assembly process in which parts placed inside the vehicle are assembled to form the indoor unit 8, and a body assembly process. Vehicle front assembly 33 is assembled by assembling parts to a part of the front body.
Vehicle front assembly process and side panel B
4. Roof panel B3 and trunk lid B7
The main shell part assembling process for configuring the main shell part 31 consisting of etc. is carried out independently and in parallel on the upper floor, and the vehicle front assembly 33 is assembled to the main shell part 31, and the vehicle is assembled. The process of configuring the upper part 34 is carried out on the floor, and the indoor unit 8 that has been lowered from the upper floor to the lower floor is assembled into the floor assembly 1.
6, the front suspension assembly 21 and the rear suspension assembly 26 are coupled to the vehicle lower part 28.
The method for assembling an automobile is characterized in that the steps composing the steps are carried out downstairs, and the vehicle upper part 34 and the vehicle lower part 28, which have been lowered from the upper floor to the lower floor, are connected to each other downstairs to assemble the automobile 36.