JP2760537B2 - Automobile manufacturing method - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method of manufacturing a motor vehicle for connecting a shed module and a shed module assembled by different line operations.

2. Description of the Related Art Conventionally, as a method of manufacturing an automobile, a method shown in FIG. 6 has been proposed (see Japanese Utility Model Laid-Open No. 62-108175).
That is, the vehicle body 1 has a structure in which the shed module 2 and the shed module 3 are connected to each other.
Has a structure in which both side bodies 4, 4 and a roof body 5 are assembled in advance, and an instrument panel 6 is assembled inside.

On the other hand, the undercarriage module 3 includes a front body 8,
It comprises a front floor panel 9, a rear floor panel 10, and a rear body 11, and interior parts such as a front seat 12, a rear seat 13, etc. are disposed on the floor panels 9, 10. And the shed module 2
The shed module 3 and the shed module 3 are assembled by different line operations, and then connected by an integrated line.

However, in such a conventional manufacturing method, the instrument panel 6 is previously attached to the shed module 2.
When the instrument panel 6 is lowered to attempt to be introduced into the shed module 2, as shown in FIG. 7, the front opening 7 provided in the shed module 2 is provided. It is most efficient to start with For this reason, the width L of the instrument panel 6 is generally longer than that of the front opening 7 because air outlets are formed on both sides, and the like. 7 has to be set to be shorter than the width dimension, and as a result, there is a disadvantage that the degree of freedom in modeling the instrument panel 6 is limited.

The present invention has been made in view of such conventional problems, and has enabled an automobile to be assembled with a highly efficient instrument panel onto a modularized vehicle body without restricting the degree of freedom in modeling. It is an object of the present invention to provide a production method of

Means for Solving the Problems In order to solve the above-mentioned problems, according to the present invention, a vault module including a front body having a dash side panel constituting both sides of a front part of a vehicle compartment and a floor panel, and a function A vehicle in which a dash module having an instrument panel and a cowl part to which parts are assembled, and a roof module having a side body, a roof body, and a rear body are separately assembled, and these modules are mutually connected. In the manufacturing method of (1), the dash module is lowered to a shed module, and lower surfaces of both ends of the cowl portion extending in the vehicle width direction are abutted and placed on an upper edge of the dash side panel from above. In the receiving part formed on the upper edge of the dash side panel, the temporary attachment parts formed on the lower surfaces at both ends of the cowl part At the same time, the dash module is cross-linked above the dash side panel, and at the same time, the dash module is positioned at least in the vehicle body vertical direction and the vehicle front-back direction with respect to the undercarriage module. The dash module is fixed to a shed module, and then the shed module is lowered and assembled and fixed to the shed module.

Operation In the above structure, in the line of the shed module, after assembling the floor panel and the front body, interior parts such as seats are assembled, and a dash module having an instrument panel is assembled. At this time, the undercarriage module is composed of the floor panel and the front body, and since the upper part is open, the dash module is lowered,
When transported onto the undercarriage module, the components of the undercarriage module do not interfere with the dash module. The dash module is configured such that the temporary attachment portions formed on the lower surfaces at both ends of the cowl portion of the dash module are face-to-face with and fitted to the receiving portions provided on the shed module, thereby forming the shed module. And then assembled and fixed.

On the other hand, in the shed module line,
By assembling the roof body and the rear body, a shed module is formed, and this shed module is combined with the shed module by an integrated line to complete a car.

An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIG.
In the side line, the front floor panel 9 and the rear floor panel 10 are joined and the front body 8 is fitted to the front end of the front floor panel 9 in the first step (a). The front body 8 includes a hood ridge panel 1
4, a member that separates the engine room 24, such as the hood ridge reinforcement 29 and the dash lower panel 15, and a dash side panel 65 that separates the front sides of the passenger compartment. As shown in FIG. 2, a concave receiving portion 80 is formed.

After the assembling of the shed module 3 is completed, the floor carpet 16, the center console 17, and the front seat 18 are provided on the upper surfaces of the floor panels 9 and 10.
In addition to disposing interior parts such as the above, an exhaust system such as the muffler 19, a fuel system such as the fuel tank 20, and a rear suspension 31 are disposed on the lower surfaces of the floor panels 9 and 10.

In the next second step (b), an operation of assembling the dash module 21 to the shed module 3 transported from the first step (a) is performed. The dash module 21 includes a dash lower panel 15 as shown in detail in FIG.
The instrument panel 6 and the like are attached to a dash upper panel 22 joined to the upper part of the vehicle.

The instrument panel 6 incorporates in advance all the functional components normally arranged on the instrument panel 6, such as the steering wheel 25 and the air conditioning unit. Further, a cowl portion 81 bent in the horizontal direction is provided at an upper end portion of the dash upper panel 22, and a convex temporary fitting that is fitted into the receiving portion 80 is provided on the lower surfaces of both ends of the cowl portion 81. The attachment portion 82 is formed.

In the second step (b), the dash module 21 is lowered, and the lower surfaces at both ends of the cowl portion 81 extending in the vehicle width direction are brought into contact with and mounted on the upper edge of the dash side panel 65 from above. Then, the temporary attachment portion 82 is fitted into the receiving portion 80 with the surfaces thereof facing in the vertical direction. As a result, the dash module 21 is bridged above the dash side panel 65, temporarily attached, and positioned with respect to the shed module 3 in the up-down direction and the front-back direction. Therefore,
The upper end both sides of the dash upper panel 22 are joined by bolts 26, and the stay 27 provided on the instrument panel 6 is screwed to the bracket 28 fixed to the dash side panel 65 of the shed module 3. As a result, the dash module 21 becomes the shed module 3
It is assembled and fixed with high accuracy.

Moreover, the shed module 3 includes the floor panel 9,
10 and the front body 8, and since the upper part is open, even if the dash module 21 is lowered and conveyed onto the shed module, the constituent members of the shed module 3 are: There is no hindrance when transporting the dash module 21. Accordingly, the width dimension L of the instrument panel 6 constituting the dash module 21
There is no need to limit (see FIG. 7), and the width L and the like of the instrument panel 6 can be freely set without being restricted by the shed module 3.

Further, in the third step (c), the engine room 24
Inside, all functional components normally disposed outside the engine room 24, such as the engine mount member 30, the pair of front suspensions 32, the engine 33, and the radiator 34, are incorporated. In the fourth step (d), which is the final step of the line for the lower shed module 3, the front end module 38 in which the head lamp 35 and the front grille 36 are assembled to the radiator core support member 37 is connected to the front end of the front body 8. Attached to.

On the other hand, in the line on the shed module 2 side, in a single step (e), the frame members of the side body 4, the roof body 5, and the rear body 11 are assembled, and the roof panel 39 and the rear fender panel 40 are assembled. Body 4 is front pillar 43, center pillar 4
4. It consists of a rear pillar 45 and a side sill 46. A cross panel 41 is bridged between the side bodies 4, and a rear seat back 42 is attached to the cross panel 41. Then, the shed module 2 that has completed the single step (e) is lowered from above the shed module 3 that has completed the fourth step (d), and is subjected to the integrated line joining step (f). , 3 and 4 and FIG.

That is, FIG. 3 shows a connection structure between the front floor panel 9 and the side sill 46.
Reference numeral 46 denotes a closed cross-sectional shape in which a sill inner 47 and a sill outer 48 are joined via a reinforce 49, and the sill inner 47 is formed by joining a sill inner upper 50 and a sill inner lower 51, and The upper 50 is formed with a flange 52 that extends in the horizontal direction. The sill inner lower 51 has a vertical surface 53 and a lower horizontal surface 54.

On the other hand, on the edges of the floor panels 9 and 10, a vertical positioning surface 55 that is in contact with the lower surface of the flange 52 has a stepped portion.
Has been molded through 56. The vertical positioning surface 55
A vehicle width direction positioning surface 55 in contact with the vertical surface 53 is formed at an end of the vehicle width direction positioning surface 55.The end of the vehicle width direction positioning surface 55 is displaced downward from the vertical direction positioning surface 55. A fixing piece 58 that contacts the lower horizontal surface 54 extends.
The front floor panel 9 and the sill inner 47 are fastened and fixed between the flange 52 and the vertical positioning surface 55 by bolts 62 and nuts 63.
And the fixing piece 58 are fastened and fixed with a bolt 62 and a nut 63.

On the other hand, on the lower surface of the rear floor panel 10, a rear side member 59 forming a closed cross section as shown in FIG.
The upper joining flange 60 and the lower joining flange 61 are joined. A retainer 64 that extends over the upper surface of the sill inner 47 is fixed to the rear floor panel 10 with bolts 62 and nuts 63, and the lower joining flange 61 is a bolt.
It is fastened and fixed to the lower horizontal surface 54 by a nut 62 and a nut 63.

FIG. 5 shows a connecting structure of the dash side panel 65 and the front pillar 43. The dash side panel 65 is provided with a connecting piece 66, and the front pillar 43 is a pillar inner panel. 67 and the pillar outer panel 68 are formed into a closed cross-sectional shape. The dash side panel 65 and the front pillar 43 are fastened and fixed by a bolt 62 inserted into the pillar inner panel 67 and a nut 63 screwed to the bolt 62.

Then, after the lower module 3 and the upper module 2 are combined with this structure, the front fender panel 69,
Front door 70, rear door 71, sill cover 72, hood 7
3. A completed automobile 78 can be obtained by assembling the front window glass 74, the rear window glass 75, the trunk lid 76, and the like, and further transporting and assembling the rear seat cushion 77 into the passenger compartment.

Effect of the Invention As described above, the present invention lowers the dash module to the shed module, and abuts and places the lower surfaces of both ends of the cowl portion of the dash module on the upper edge of the dash side panel from above, and At the same time, the temporary attachment portions formed on the lower surfaces at both ends of the cowl portion are fitted to the receiving portion formed on the upper edge of the side panel by face-to-face contact in the vertical direction, and the dash module is bridged above the dash side panel. After positioning the dash module with respect to the undercarriage module at least in the vehicle vertical direction and the vehicle longitudinal direction, the dash module is fixed to the undercarriage module,
Next, the above shed module was lowered to this shed module and assembled and fixed. Therefore, when the dash module is fixed to the undercarriage module, since the dash module is temporarily attached to the undercarriage module, not only can the assembling workability of the dash module be improved, but also the assembling accuracy can be improved. Can be planned.

Moreover, the undercarriage module is composed of a floor panel and a front body, and since the upper part is open, even if the dash module is lowered and transported onto the undercarriage module, The components are
There is no occurrence of a hindrance when transporting the dash module. Therefore, the dash module can be assembled to the undercarriage module without restricting the width of the instrument panel constituting the dash module. It is possible to secure the degree.

[Brief description of the drawings]

FIG. 1 is a process diagram showing one embodiment of the present invention, FIG. 2 is a perspective view showing a process of connecting a front body and a dash module, FIG. 3 is a sectional view taken along the line III-III of FIG. 1 is a sectional view taken along the line IV-IV of FIG. 1, FIG. 5 is a sectional view taken along the line VV of FIG. 1, FIG. 6 is a perspective view showing a conventional automobile manufacturing method, and FIG. It is explanatory drawing which shows the dimension relationship of a panel and a front opening part. 2 ... Shed module, 3 ... Shed module, 4 ...
Side body, 5 ... Roof body, 6 ... Instrument panel, 11 ... Rear body, 21 ... Dash module, 80 ... Receiving part, 82 ... Temporary attachment part.

Continuing on the front page (72) Inventor Toshifumi Inoue Nissan Motor Co., Ltd. (2) Takaracho, Kanagawa-ku, Yokohama, Kanagawa Prefecture (72) Inventor Hiroshi Segawa 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Prefecture, Nissan Motor Co., Ltd. (72 Inventor Hiroyuki Sakaba, Nissan Motor Co., Ltd. (72) Inside Nissan Motor Co., Ltd. (72) Inventor Yuichi Takahashi Nissan Motor Co., Ltd. (72) Inventor Manabu Sekine, Kanagawa Prefecture Nissan Motor Co., Ltd., Nissan Motor Co., Ltd. (72) Inventor Yoshitaka Mizuhara, Nissan Motor Co., Ltd., Nissan Motor Co., Ltd. (56) References JP, 63-46975 (JP, A) JP-A-60-50075 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B62D 25/00

Claims (1)

(57) [Claims] An undercarriage module having a front body having a dash side panel forming both sides of a front part of a vehicle compartment and a floor panel, and a dash module having an instrument panel and a cowl part to which functional components are assembled. And a shed module including a side body, a roof body, and a rear body, are separately assembled, and in a method of manufacturing an automobile in which these modules are mutually connected, the dash module is lowered to a shed module,
The lower surfaces of both ends of the cowl portion extending in the vehicle width direction are contacted and placed on the upper edge of the dash side panel from above, and the cowl is placed on a receiving portion formed on the upper edge of the dash side panel. At the same time, the temporary attachment portions formed on the lower surfaces at both ends of the portion are fitted face-to-face in the vertical direction, and the dash module is bridged above the dash side panel,
After positioning the dash module with respect to the undercarriage module at least in the vehicle body vertical direction and the vehicle body front and rear direction, the dash module is fixed to the undercarriage module. A method for manufacturing an automobile, wherein the automobile is fixed.