JPH02249772A - Car body front part structure - Google Patents

Abstract

PURPOSE:To enhance the strength by opening the front of a first cross member rear connected in its both ends to right and left front side members and connecting to this rear a first cross member front in the lower end part of a radiator core support panel. CONSTITUTION:Left and right front side members 1, serving as a skeleton part of a car body, are formed in a shape of closed sectional box connecting a closing plate 1b to a member main unit 1a of section in a squared shape with one side open. This side member 1 connects both end parts of a first cross member rear 3, opening the front with a section of squared shape opening one side, to the front end while a hood ridge panel 7 constituting a side wall of an engine room 5. And a radiator core support panel 15, provided with, in its front surface side, parts such as a front grill 31, a head lamp 33, etc., is fixed to a front fender panel 11, and the first member front 25 of the panel 15 is connected to the above described rear 3.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention relates to a vehicle body front structure suitable for an automobile.

(Prior Art) Conventionally, as a vehicle body front structure constituting an engine room, for example, the structure described in Japanese Patent Application Laid-open No. 103771/1983 is known. That is, the left and right front side members serving as the vehicle body skeleton, and the side members connected to the side members,
It is divided into left and right hood ridges including left and right front pillars, and a radiator core support, functional parts are assembled to this radiator core support to create a module, and the modularized radiator core support is joined to the front of the left and right hood ridges. It has a structure.

<Problems to be Solved by the Invention> In the vehicle body front structure in which the radiator core support panel is modularized and retrofitted to the vehicle body as described above, the front end portions of the left and right front side members serving as the vehicle body frame part cannot be moved in the direction of the interior of the vehicle. Since there is no member to restrain the radiator core support panel, the radiator core support panel is placed in an unstable situation during the process of installing it, which may result in a loss of positional accuracy and affect suspension installation. Become.

Therefore, this invention was developed for the front side member.
It is an object of the present invention to provide a vehicle body front structure in which multilayer functional parts such as a radiator and a capacitor can be reliably attached to a radiator core support panel without any problems in terms of strength.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, in the present invention, left and right front side members to which vehicle body panels consisting of a hood ridge, a front fender, etc. are connected, It connects both ends of the first cross member rear, which is open at the front, while also connecting both ends of the radiator core support panel, which has the first cross member front at the lower end and has functional parts such as lamps, trim parts, etc. assembled on the front side. The sides are connected to the vehicle body panel, and the first cross member front at the lower end is connected to the first cross member rear, so that the first cross member front and the first cross member rear form a closed cross-sectional first cross member.

(Function) In this vehicle body front structure, both side portions of the radiator core support panel are connected to the φ body panel, and the first cross member front at the lower end is connected to the first cross member rear. In this case, until the process of joining the radiator core support panels, the positional accuracy of the left and right front side members will not be significantly disturbed by the first cross member rear, and the installation of the suspension will not be affected. In addition, the first cross member with a closed cross section ensures strength and rigidity, making it possible to securely mount heavy functional parts such as radiators and condensers.

(Actual M Example) Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings of FIGS. 1 to 7.

In the figure, reference numeral 1 indicates left and right front side members that form the vehicle body frame, and each has a box shape with a closed cross section in which a closing plate 1b is connected to a member main body 1a with a cross-sectional shape.

The front end of the front side member 1 is connected to both ends of a seven-earth cross member rear 3 which is open at the front and has a cross-sectional shape, and is also connected to a hood ridge panel 7 constituting the am of the engine room 5.

The hood ridge panel 7 has a strut housing 7a in which a suspension is arranged, and a drip portion 13 of a front fender panel 11 is overlaid and coupled to the upper flange 9.

The drip portion 13 has a horizontal surface 13a which is overlapped and coupled with the upper 7 langes 9 of the hood ridge panel, and a vertical direction 1 which rises perpendicularly from the horizontal surface and is continuous with the hood ridge panel installation surface.
3b, and the horizontal surface 13a has a mounting hole 17.3b extending vertically through which the radiator core support panel 15 is attached.
19 are provided. A nut 2 is attached to the back side of one of the mounting holes 17, that is, the upper flange 9 of the hood ridge panel 7.
1 is welded, and the other mounting hole 19 serves as a locating hole for positioning.

The radiator core support panel 15 consists of an upper radiator core support upper panel 23, lower first cross member fronts 1 to 25, and left and right side core panels 27, 27. cross member front 25
It has a plate-like shape that is continuously molded as one piece.

In this case, as shown in FIGS. 5 and 6, the first cross member front 25 and the left and right side core panels 27
．． Reinforcement member 2 with cross-section shape across each of the 27 WA areas
9 may be combined to ensure the overall rigidity of the radiator core support panel 15.

On the front side of the radiator core support panel 15, trim parts such as a front grill 31, as well as functional parts such as a headlamp 33 and side lamps are assembled. Attachment holes 37 and 39 are provided in the upper portions of both sides of the radiator core support board panel 15, and one of the attachment holes 39 serves as a locating hole for positioning. This mounting hole 37
．． 39 faces the mounting holes 17.19 on the side of the drip part 13, and by aligning the mounting holes 19.39 which serve as locating holes, the radiator core support panel 15 and the front fender panel 11 can be correctly positioned. It is fixed by bolts 40 and nuts 21.21a screwed into each mounting hole 17.19° 37.39.

In addition, the left and right side core panels 27 and 27 of the radiator core support panel 15 are the front fender panel 1
It is connected by bolts 42 and nuts 43 to a mounting flange 41 which is provided on a mounting surface in the vehicle interior direction provided on the vehicle.

Furthermore, the lower first cross member front 25
is connected to the first cross member rear 3 by bolts 45 and nuts 46, and both ends cross the open opening of the front side member 1 and are connected to the closing plate 1b. As a result, a first cross member 47 with a new surface shape that becomes the vehicle body frame is formed by the first cross member front 25 and first cross member rear 3, etc., and also prevents mud from entering from the front into the left and right front side members 1, 1. It is shaped so that it does not wake up.

Note that 49 indicates a towing hook welded to the front side member 1 in the area where the first cross member rear 3 is coupled.

According to the vehicle body front structure constructed in this manner, the left and right front side members 1.1 do not undergo a large deviation in position due to the first cross member relay 3.

Therefore, the suspension etc. can be installed correctly.

On the other hand, when installing the radiator core support panel 15, on the front side of the radiator core support panel 15,
Functional parts such as head lamps 33 and side lamps 35, as well as trim parts such as radiator grill 31 are installed. In addition, after temporarily covering functional parts such as the radiator and capacitor on the rear side, the radiator core support panel 1
The mounting holes 37 and 39 on both side parts of the front fender panel 11 are made to face the mounting holes 17 and 19 of the drip part 13 of the front fender panel 11, and are fixedly connected with bolts 40 and nuts 21 and 21a. This allows radiator core support panel 1
5 is attached based on the drip portion 13 of the front fender panel 11, so that the degree of installation of the radiator core support panel 15 to the front fender panel 11 is improved. In this case, by providing a guide bracket 51 for guiding the rib 35 of the side lamp 35 on the front fender panel 11 side as shown in FIG. 7, the mounting surfaces W of the side lamp 35 and the front fender panel 11 can be correctly aligned. This makes it very desirable in terms of appearance.

Next, after connecting the first cross member front 25 to the first cross member rear 3, the temporarily mounted functional parts such as the radiator and condenser are fixed, so that the multi-layered functional parts are securely attached to the first cross member 47. Become supported.

Effects of the Invention] As described above, according to the vehicle body front structure of the present invention, the positional accuracy of the left and right front side members can be prevented from being greatly disturbed by the first cross member rear. Therefore, it becomes possible to correctly attach the suspension and the like.

In addition, since the first cross member, which is the vehicle body frame, is composed of the first cross member front and the first cross member rear, functional parts with III such as radiators and capacitors can be attached to the radiator core support panel without the need for strength epithelial III. .

[Brief explanation of drawings]

Fig. 1 is an overall front perspective view showing the front structure of the vehicle body according to the present invention, Fig. 2 is an enlarged perspective view of main parts, Fig. 3 is a sectional view taken along the line ■-■ of Fig. 2, Figure 4 is an exploded perspective view of the main parts, Figure 5 is a perspective view showing a modification of the radiator core support panel, Figure 6 is an exploded perspective view of the same as above, and Figure 7 is a front fender panel with a guide provided. FIG. 1...Front side member 3...First cross member rear 7.11...
Vehicle body panel 15...Radiator core support panel 47...First cross member agent Patent attorney Hidekazu Miyoshi Figure 2 11sm

Claims (1)

[Claims] Both ends of the first cross member rear, which is open at the front, are connected to the left and right front side members, which are joined to body panels consisting of the hood ridge, front fender, etc. Both sides of the radiator core support panel, on which functional parts such as lamps, trim parts, etc. are assembled, are connected to the vehicle body panel, and the front of the first cross member at the lower end is connected to the rear of the first cross member. A front body structure characterized by a first cross member with a closed cross-section formed by the front and rear first cross members.