JP3340986B2 - Car body front structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a front portion of a vehicle body for supporting a radiator in a vehicle body of an automobile.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned front structure of a vehicle body has
There is one disclosed in JP-A-5-170134.

According to the above publication, a vehicle body includes a pair of left and right side members extending in the front-rear direction of the vehicle body, a cross member extending in the width direction of the vehicle body and connecting the front ends of the side members to each other, A left and right radiator upper member extending in the width direction above the cross member, and a front end portion of each of the side members extending in the vertical direction and each of the width end portions of the radiator upper member being joined to each other. A pair of radial support stays is provided. In this configuration, a headlamp is usually disposed outside the upper part of each of the above-mentioned radial support stays.

[0004]

By the way, in the prior art, when viewed from the front of the vehicle body, in addition to the cross member and the radial support upper member being substantially parallel to each other, the left and right radial support stays are also substantially parallel to each other. For this reason, these combined bodies have a frame shape connecting each side of the rectangular parallelepiped.

[0005] Therefore, when the front portion of the vehicle body receives an impact force from the outside thereof, such as at the time of a side collision of an automobile, or when a large inertial force is generated in the front portion of the vehicle body during steering, a slight amount of force is applied. However, it tends to be deformed into a parallelogram such that the angle of each corner of the combined body is other than 90 °, and accompanying this, the deformation of the front part of the vehicle body increases,
There is a possibility that the steerability is reduced.

The present invention has been made in view of the above-described circumstances. For example, when the vehicle is in a side collision, the front portion of the vehicle body receives an impact force from outside thereof, and when the vehicle is steered, the front portion of the vehicle body is prevented. It is an object of the present invention to ensure that the deformation of the front part of the vehicle body is more reliably suppressed when a large inertia force is generated in the lateral direction, thereby ensuring good maneuverability.

[0007]

A vehicle body front structure according to the present invention for solving the above-mentioned problems is as follows.

A first aspect of the present invention is a cross member 7 extending in the front-rear direction of the vehicle body 1 and a cross member 7 extending in the width direction of the vehicle body 1 and connecting the front ends of the side members 6 to each other. A radial support upper member 8 extending in the width direction above the cross member 7, a front end of each side member 6 extending in the vertical direction, and an end in the width direction of the radial support upper member 8; And a pair of left and right radial support posts 9 that respectively couple to each other,

Each of the radial support stays 9 is formed such that an upper portion 9b thereof is deviated inward of the vehicle body 1 in the width direction from a lower portion 9a thereof ,

Each of the side members 6 is a side member book.
A front plate (30) coupled to a front end of the body (28); and a lower end of each of the radial support posts (9) sandwiched between the front plate (30) at the front end of each of the side members (6) and each end of the cross member (7). These three members 6, 7, 9
They are overlapped and joined so as to make surface contact .

According to a second aspect of the present invention, in addition to the first aspect of the present invention, each of the radial support stays 9 includes a front plate 36 extending in the width direction in a plan sectional view, and a width of the front plate 36 extending in the width direction. A side plate 37 extending rearward from one end in the direction,
The front plate 36 at the lower end of each of the radial support posts 9 is sandwiched between the front end of the side member 6 and the end of the cross member 7, and a side plate 37 at the lower end of each of the radial support posts 9 is provided. Are connected to the side surfaces of the side members 6.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

In the drawings, reference numeral 1 denotes a vehicle body, and an arrow Fr indicates the front of the vehicle. The left and right described below are the width direction of the vehicle body 1 toward the front (hereinafter, simply referred to as “width direction”).
).

The vehicle body 1 includes a body frame 2 made of sheet metal supported on a traveling road surface via front and rear wheels, and a sheet metal disposed above the body frame 2 and supported by the body frame 2. The vehicle body frame 3 and the vehicle body 3 are substantially symmetrical with respect to a virtual vertical plane 4 passing through the center of the vehicle body 1 in the “width direction”.

A front portion of the vehicle body frame 2 extends in the front-rear direction of the vehicle body 1 and constitutes a pair of left and right side members 6 and 6 forming left and right side portions of the vehicle body frame 2. A front cross member 7 which extends in the "width direction" and constitutes a front end of the body frame 2 and connects the front ends of the side members 6 and 6 to each other; A radiator support upper member 8 (radius support: abbreviated as radiator support, hereinafter the same) extending in the “width direction” and constituting the front end of the vehicle body frame 2; A pair of left and right radis-posters 9, 9 for connecting the front ends of the side members 6, 6 and the respective ends in the "width direction" of the radi-sap upper member 8 to each other by spot welding S; And a center member 10 be substantially coupled to each other the intermediate portion of the "width direction" above is located on the virtual vertical surface 4 and the cross member 7 extending in the vertical direction radio support upper member 8.

A pair of left and right front fender aprons 12, 12 extending vertically and constituting left and right side portions of the vehicle body 3, are supported by midway portions of the side members 6 in the front-rear direction. A pair of left and right upper side members 13, 13 are provided to constitute the left and right front side portions and couple the end of each of the radial support upper members 8 and the upper end of each of the front fender aprons 12 to each other. Each component member 6-1 of the body frame 2
An internal space at the front part of the vehicle body 1 surrounded by the front fender aprons 12 of the vehicle body 3 is an engine room 14 for accommodating an engine such as a vehicle-mounted internal combustion engine for driving driving.

A hood 15 which constitutes a front upper portion of the vehicle body 3 and which opens and closes the engine room 14 from above is provided. The front fender apron 12 is covered from the outside to cover the vehicle body 3. A pair of left and right front fenders 16, 16 constituting the outer portion of the front fender are provided.

As viewed from the front of the vehicle body 1 (FIGS. 1 and 2), an opening 19 surrounded by the cross member 7, the radisap upper member 8, and the left and right radisposters 9, 9 extends in the front-rear direction of the vehicle body 1 through the engine. The inside and outside of the room 14 communicate with each other.

A water cooling radiator 20 is provided for the engine, which is accommodated in the engine room 14 and supported by being mounted on the cross member 7 and the radiator support upper member 8. The radiator 20 is viewed from the front of the vehicle body 1. , Are provided over substantially the entirety of the opening 19. A pair of left and right fans 2 for forcibly air cooling the radiator 20
Each of the fans 21 has a circular outer shape when the vehicle body 1 is viewed from the front. In addition, each of the fans 21 is arranged in the right and left radial support post 9 in the “width direction”.
9 and are arranged to overlap the opening 19 and the radiator 20, respectively.

A front bumper 22 is provided at the front side of the cross member 7 and extends in the “width direction” and is supported by the cross member 7. A grill (not shown) is formed at a portion where the front bumper 22 overlaps with the opening 19 when the vehicle body 1 is viewed from the front, and the radiator 20 is moved by the running wind passing through the grill, the opening 19, and the radiator 20 sequentially. Air cooled.

Head lamps 24 are provided near the outer side of the upper part 9b of each of the radial support stays 9 so as to be able to irradiate the front from the front end side of the vehicle body 1, respectively. More specifically, at the front end of the vehicle body 1, a space 25 is formed which is surrounded by the radiating support 9, the front fender apron 12, and the upper side member 13 in a front view of the vehicle body 1. The headlamp 24 is fitted into 25 and is supported by the front end of the vehicle body 1.

Each of the side members 6 has a hat-shaped side member body 28 that opens outward when viewed from the front cross section of the vehicle body 1, and the side member body 28 that closes the opening of the side member body 28. A side plate 29 joined to the front member 30 by spot welding S, and a front plate 30 joined to the front end of the side member main body 28.
The side member 6 has a sufficient strength and rigidity because the cross section of each part in the front-rear direction is a closed cross section.

Each of the radial support stays 9 is formed such that its upper part 9b is displaced in the "width direction" from the lower part 9a toward the virtual vertical plane 4 inside the vehicle body 1. More specifically, each of the radial support stays 9 is directed toward the virtual vertical plane 4 from the lower end to the upper end,
It is gradually inclined.

For this reason, the combined body 32 composed of the cross member 7, the radiating support upper member 8, and the left and right radiating support stays 9, 9 has a frame shape that connects substantially trapezoidal sides when the vehicle body 1 is viewed from the front. The strength and rigidity against an external force from the outside are improved as compared with the related art in which the combination body 32 has a frame shape connecting each side of the rectangular parallelepiped.

Therefore, when the front portion of the vehicle body 1 receives an impact force from the outside thereof, such as at the time of a side collision of an automobile, or when a large inertia force occurs in the front portion of the vehicle body 1 during steering,
The deformation of the combination body 32 is suppressed, and accordingly, the deformation of the front portion of the vehicle body 1 is more reliably suppressed, so that good maneuverability is secured.

Here, as described above, the head lamp 24 is disposed outside the upper part 9b of each radis-poster 9, and therefore, as described above, each radis-poster 9 is provided.
When the upper part 9b is displaced inward of the vehicle body 1, the volume of the space 25 on the outer side of the upper part 9b of each of the radial support stays 9 increases accordingly, so that the headlamp 24 has a larger shape. The degree of freedom in designing the headlamp 24 can be improved.

As described above, the radiator 20 is located between the left and right radiator supports 9 when viewed from the front of the vehicle body 1.
A pair of left and right fans 21 and 21 for cooling the air are provided, and since each of these fans 21 is circular, even if the upper part 9b of each radisa post 9 is displaced toward the center of the vehicle body 1 as described above. The upper portion 9b of each radiator support 9 is prevented from overlapping with the upper portion of each fan 21. Therefore, the cooling performance of the radiator 20 by each fan 21 is kept good.

That is, as described above, by displacing the upper part 9b of each radial support stay 9 inward of the vehicle body 1,
Even when the strength and the like of the combination body 32 are improved and the deformation of the front part of the vehicle body 1 is suppressed, the head lamp 24
The degree of freedom of design can be improved,
The cooling performance of the radiator 20 can be kept good.

In the front-rear direction, the lower end of each of the radial support posts 9 is sandwiched between the front plate 30 at the front end of each of the side members 6 and each end of the cross member 7. , 9 are superposed so as to be in surface contact with each other, and are joined together in a fastening manner by a plurality of (three) fastening means 34 which are fasteners.

As a result, the three members 6, 7, and 9 are more directly coupled to each other, and the coupling strength is further improved.

Therefore, the strength and rigidity of the combined body 32 are further improved, and the deformation of the front portion of the vehicle body 1 is more reliably suppressed.

Each of the radial support posts 9 has a front plate 36 extending in the “width direction” in a plan sectional view of each portion in the longitudinal direction.
And a side plate 37 integrally extending rearward from an outer end, which is one end of the front plate 36 in the “width direction”. That is, the cross-sectional shape of each of the radial support stays 9 is substantially L-shaped, and greater strength and rigidity are ensured as compared with a simple flat plate shape.

The front plate 36 at the lower end of each of the radial support stays 9 is sandwiched between the front end of the side member 6 and the end of the cross member 7 as described above.
4. At this time, the side plate 37 of each of the radial support stays 9 is joined to the outer surface of the front end of the side member body 28 of the side member 6 and joined by spot welding S.

For this reason, the front end of the side member 6 and the front plate 36 and the side plate 37 at the lower end of the radial support stay 9 are arranged in the “width direction” which is substantially perpendicular to the front-rear direction.
Therefore, the members 6 and 9 are prevented from being directional due to the coupling strength.

Accordingly, the strength and rigidity of the combination body 32 are further improved, and the deformation of the front portion of the vehicle body 1 is more reliably prevented.

Although the above description is based on the illustrated example, the front plate 30 of the side member 6 may not be provided. Further, the fixing means 34 may be spot welding.

[0037]

The effects of the present invention are as follows.

According to the first aspect of the present invention, a pair of left and right side members extending in the front-rear direction of the vehicle body, a cross member extending in the width direction of the vehicle body and connecting the front ends of the side members to each other, and an upper part of the cross member A radial support upper member extending in the width direction, and a pair of right and left radis support stays extending in the vertical direction and connecting the front end of each side member and each end of the radial support upper member in the width direction to each other. In the vehicle body front structure equipped with

Each of the radial support stays is formed such that its upper part is deflected inward of the vehicle body in the width direction above its lower part.

For this reason, the combined body of the above-mentioned cross member, the radial support upper member, and the left and right radial support stays has a frame shape connecting substantially trapezoidal sides in a front view of the vehicle body. The strength and rigidity against an external force from the outside are improved as compared with the conventional one having a frame shape connecting the sides.

Accordingly, when the front portion of the vehicle body receives an impact force from the outside thereof, such as at the time of a side collision of an automobile, or when a large inertial force is generated in the front portion of the vehicle body during steering, the above-described combination body is used. Of the vehicle body, the deformation of the front portion of the vehicle body is more reliably suppressed, and good maneuverability is secured.

Further , each of the side members is provided with a side member.
A front plate coupled to the front end of the main body, and the three members are sandwiched between the front plate of the front end of each side member and each end of the cross member by sandwiching the lower end of each of the radial support posts. Overlap so that they come into face contact with each other
It is combined Te.

For this reason, since the above three members are directly connected to each other, the connection strength is further improved.

Accordingly, the strength and rigidity of the combined body are improved, and the deformation of the front part of the vehicle body is more reliably suppressed.

According to a second aspect of the present invention, each of the radial support stays includes a front plate extending in the width direction when viewed in plan cross section.
A side plate extending rearward from one end in the width direction of the front plate, and a front plate at a lower end of each of the radial support stays is sandwiched between a front end of the side member and an end of the cross member. At the same time, a side plate at the lower end of each of the radial support stays is connected to the side surface of each of the side members.

For this reason, the front end of the side member,
The front and side plates at the lower end of the radial support stay are coupled to each other in the front-rear direction and in the “width direction” that is substantially orthogonal to the front plate and the side plates. Is prevented.

Therefore, the strength and rigidity of the combined body are further improved, and the deformation of the front part of the vehicle body is more reliably prevented.

[Brief description of the drawings]

FIG. 1 is a front view of a front portion of a vehicle body.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is a plan view of what is shown in FIG.

FIG. 4 is a side view of a front portion of the vehicle body.

FIG. 5 is a partially enlarged sectional view of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Body frame 6 Side member 7 Cross member 8 Radius upper member 9 Radius support 9a Lower part 9b Upper part 19 Opening 20 Radiator 21 Fan 24 Head lamp 25 Space 32 Combined body 36 Front plate 37 Side plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B62D 25/08

Claims (2)

(57) [Claims] 1. A pair of left and right side members extending in the front-rear direction of the vehicle body, a cross member extending in the width direction of the vehicle body and connecting the front ends of the side members to each other, and above the cross member in the width direction. A vehicle body having a radiating support upper member extending therewith and a pair of left and right radiating support members extending in a vertical direction and connecting a front end of each of the side members and an end of the radiating support upper member in the width direction to each other. in the front structure, upper than the respective lower its above Rajisaposute is formed to deflect inwardly of the vehicle body above the width direction, each side member, forming the front end portion of the side member body
A front plate to be combined with the front plate at the front end of each of the side members and an end of the cross member so as to sandwich the lower end of each of the radial support stays so as to make surface contact with each other. vehicle body front structure of the automobile bound combined. 2. Each of the radial support stays includes a front plate extending in the width direction and a side plate extending rearward from one end of the front plate in the width direction when viewed in plan cross section. The front plate at the lower end of the radisa post is sandwiched between the front end of the side member and the end of the cross member, and the side plate at the lower end of each radisa post is attached to the side surface of each side member. The vehicle body front structure according to claim 1 , wherein the vehicle body front structure is combined.