JPH08324456A - Body front structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a vehicle body front structure capable of more effectively suppressing inward tilt by improving the strength against a load input to a strut housing. A hood ridge reinforcement 21 is arranged along the vehicle front-rear direction on both sides of an engine room E on the front side of the vehicle body, and a rear end 21a of the hood ridge reinforcement 21 is disposed at both ends of an air box 24. Strut housing 25 connected to 24a and further protruding toward the engine room E from the hood ridge reinforcement 21.
And a first gusset 26 for connecting between the upper surface of the strut housing 25 and the upper surface of the air box 24 is provided. The first gusset 26 is a rear end of the upper surface of the air box 24. It was extended to the edge and joined.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body front structure for improving strength against input from a strut housing arranged in an engine room of a vehicle.

[0002]

2. Description of the Related Art Conventionally, a vehicle body front structure of this type is shown in FIG.
As shown in FIG. 2, a pair of Hood Ridge reinforcements 1 (one is omitted) are arranged on both sides in the vehicle width direction of the engine room E along the vehicle front-rear direction, and the rear end portion 1a of the Hood Ridge reinforcement 1 is , Both ends 2 of the air box 2
connected to a. A pair of strut housings 3 projecting to the engine room E side are connected to the hood ridge reinforcement 1. In the figure, reference numeral 6 is a dash lower panel, and reference numeral 7 is a front side member.

In this pair of strut housings 3,
Since a load acts diagonally upward from a front suspension (not shown), a force acting inward in the vehicle width direction acts as a component of the load. Therefore, in order to prevent the so-called inward fall of the strut housing 3, it is disclosed in JP-A-4-254.
There is the one shown in FIG. 8 described in Japanese Patent No. H264, or the one shown in FIGS. 9 and 10 described in Japanese Utility Model Laid-Open No. 2-1157171.

[0004]

However, in the structure shown in FIG. 8 of JP-A-4-254264, the load from the strut housing 3 is transmitted to the air box 2 by the gusset 9. However, it is desired that the air box 2 as a whole be able to bear the load more effectively than this structure and further suppress the inward collapse of the strut housing 3.

Further, in the ones shown in FIGS. 9 and 10 described in Japanese Utility Model Publication No. 2-115711,
A part of the strut housing 3 is extended, and the extension 3a is inserted into and joined to the closed cross section formed by the hood ridge reinforcement 1 and the hood ridge upper 10. The extension 3a is Since it is joined to the general surface of the hood ridge reinforcement 1, it is not possible to effectively transmit the force of the strut housing 3 in the inclining direction to the hood ridge reinforcement 1 and the hood ridge upper 10. Therefore, similar to the above, the strut housing 3
It is desired to further suppress the collapse of the inside of the body.

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle body front structure capable of improving strength against a load input to a strut housing and more effectively suppressing inward leaning.

[0007]

The invention described in claim 1 is made in view of the above-mentioned problems, and a hood ridge rain is provided on both sides of the engine room on the front side of the vehicle body along the longitudinal direction of the vehicle. A force is disposed, the rear end of the hood ridge rainforce is connected to both ends of the air box, and a strut housing protruding from the hood ridge rainforce toward the engine room is disposed. A first gusset is provided to connect an upper surface of the strut housing and an upper surface of the air box, and the first gusset is extended to and joined to a rear edge of the upper surface of the air box. It has a feature.

According to a second aspect of the present invention, in addition to the structure described in the first aspect, a mounting portion for a wiper pivot is provided at a position overlapping the upper surface of the air box of the first gusset and at the upper surface of the air box. Is formed.

According to a third aspect of the present invention, a hood ridge reinforcement and a hood ridge upper are arranged on both sides of the engine room on the front side of the vehicle body along the longitudinal direction of the vehicle. The inner side flanges and the outer side flanges of the ridge upper are joined to each other to form a closed cross section, and the strut housing disposed on the engine room side of the closed cross section is joined to the both vehicle inner side flanges, A second gusset is obliquely disposed along a substantially diagonal line in the closed cross section on the lateral side of the strut housing so that the inner side of the vehicle is located above the inner side flange and the outer side flange. In the second gusset, an upper end edge portion on the inner side of the vehicle is interposed between the inner side flanges, and a lower edge edge of the outer side of the vehicle is on the outer side flanges. A plurality of bulging portions that bulge upward are formed side by side along the vehicle front-rear direction, and are interposed between the bulging portions and the upper surface portion of the hood ridge reinforcement. It is characterized in that a horizontal plane portion is formed.

According to a fourth aspect of the present invention, in addition to the configuration described in the third aspect, the second gusset has a joining piece joined to the hood ridge reinforcement inner side flange at the upper end edge portion. The hood ridge reinforcement inner side flange, the strut housing and the hood ridge upper inner side flange are formed by spot welding between the joint pieces, and the hood ridge on the horizontal plane portion of the bulge portion is formed. The joining position on the upper surface of the reinforcement is offset from the joining position of the joining piece in the vehicle front-rear direction.

[0011]

According to the invention described in claim 1, since the strut housing and the air box are connected by the first gusset, the load input to the strut housing is transmitted to the air box. In this case, the first
Since the rear edge of the gusset is extended and joined to the rear edge of the upper surface of the air box, the load transmitted through the first gusset is conventionally carried by the entire air box. It is possible to suppress the inward tilting of the strut housing as compared with the conventional case.

According to the invention described in claim 2, in addition to the function of the invention described in claim 1, a wiper pivot is provided at a position overlapping the upper surface of the air box of the first gusset and at the upper surface of the air box. By forming the mounting portion, it is not necessary to dispose a separate bracket for mounting the wiper pivot.

According to the invention described in claim 3, the second
The strength of the gusset is improved by forming a plurality of bulges, and by disposing this second gusset on the diagonal line, the rigidity of the closed cross section can be improved more than before. Moreover, since the second gusset is obliquely arranged so that the inside of the vehicle is located above the inside and outside flanges of the hood ridge reinforcement and the hood ridge upper, the second gusset is inclined. Approaches the axial direction of the strut (direction in which the load acts), so that the second gusset effectively acts to bear the load. Further, since the horizontal surface portion is formed in the bulging portion of the second gusset and the horizontal surface portion is joined to the upper surface portion of the hood ridge reinforcement, it is possible to effectively bear the component force in the horizontal direction. Therefore, even when a load in the inclining direction acts on the strut housing, this load can be effectively beared.

According to the invention described in claim 4, since the strut housing is made of a relatively thick material, it is difficult to spot-weld the four plate members. A plurality of joint pieces are formed on the upper edge portion so as to be separated from each other, and the joint pieces are joined to the hood ridge reinforcement inner side flange, and the hood ridge reinforcement inner side is inserted through the so-called relief portion between the joint pieces. The three parts of the flange, strut housing, and hood ridge upper vehicle inner side flange are spot welded. Since the second gusset cannot be welded at the escape portion, the horizontal surface portion of the bulging portion is joined to the hood ridge reinforcement upper surface portion, and the position is shifted in the vehicle front-rear direction from the joining position of the joining piece. As a result, the joint portion at the position corresponding to the escape portion is secured, and the strength of the joint portion between the strut housing and the hood ridge reinforcement is secured.

[0015]

EXAMPLES The present invention will be described below based on examples.

1 to 6 are views showing an embodiment of the present invention.

First, the structure will be described. As shown in FIG. 1, a pair of hood ridge reinforcements 21 (one of which is omitted) are arranged on both sides of the engine room E in the vehicle width direction along the vehicle longitudinal direction. Under the hood ridge reinforcement 21, a hood ridge upper 23 forming a substantially rectangular closed section 33 with the reinforcement 21.
Are also arranged along the vehicle front-rear direction. The rear end 21 a of the hood ridge reinforcement 21 and the like are connected to both ends 24 a of the air box 24. A strut housing 25 is disposed on the engine room E side of the closed cross section 33 formed by the hood ridge reinforcement 21 and the like.

The strut housing 25,
Hood Ridge Reinforce 21 and Air Box 2
A first gusset 26 is provided over the four.

Specifically, the first gusset 26 is disposed so as to straddle between the strut housing 25 and the air box 24, and the front end portion 26a thereof has the strut housing 2
5 is joined to the upper surface portion of the vehicle 5, and the vehicle outer side edge portion 26 of the intermediate portion 26b.
c is joined to the hood ridge reinforcement 21, and the rear end portion 26d is joined to the air box 24.

As shown in FIG. 2, the air box 24 has a closed cross-section structure including a dash upper panel 28, a cowl top center panel 29 and a cowl top front panel 30 extending in the vehicle width direction. The rear end portion 26d of the first gusset 26 is located below the cowl top center panel 29 and above the dash upper panel 28 and the cowl top front panel 30.
The cowl top center panel 2 in which the rear end edge portion 26e of the first gusset 26 is the "air box 24 rear end edge portion"
Three sheets are struck by being interposed between the rear end flange 29b of the 9 and the upper flange 28a of the dash upper panel 28. Further, the rear end portion 26d of the first gusset 26 is interposed between the upper end flange 30a of the cowl top front panel 30 and the front end flange 29a of the cowl top center panel 29, and three sheets are struck. Furthermore, this first
A rear end portion 26d of the gusset 26 overlapping the cowl top center panel 29 and the cowl top center panel 29 are formed with a mounting portion 39 to which a wiper pivot 38 indicated by a chain double-dashed line in FIG. .

Reference numeral 32 in FIG. 2 denotes a dash lower panel, and three upper end flanges 32a, a dash upper panel lower flange 28b, and a front wall panel lower end flange 30b are struck.

On the other hand, as shown in FIG. 4, the vehicle interior flanges 21b and 23b of the hood ridge reinforcement 21 and the hood ridge upper 23 and the vehicle exterior flanges 21c and 23c are joined together to form a closed cross section 33. The second gusset 35 and the patch 36 are arranged in the closed cross section 33 on the side of the strut housing 25.

That is, the second gusset 35 is shown in FIG.
As shown in FIG. 4 and the like, a total of four joining pieces 35a are formed on the upper edge portion so as to be separated from each other, the joining piece 35a is interposed between the vehicle inner side flanges 21b and 23b, and the lower end edge portion 35c is formed on the vehicle edge. It is interposed between the outer flanges 21c and 23c, and is arranged diagonally in a substantially rectangular closed cross section 33 so that the inner side of the vehicle is inclined. Two of the joining pieces 35a are struck at the welding position B on the hood ridge reinforcement inner side flange 21b.
Further, in this position, as shown in FIG. 4, the strut housing 25 and the hood ridge upper vehicle inner side flange 23 are provided.
Two pieces of b and b are hit at the welding position 2. Further, the lower end edge portion 35c of the second gusset 35 is interposed between both vehicle outer side flanges 21c and 23c, and three sheets are struck. Furthermore, in the middle portion of the second gusset 35, a plurality of bulging portions 35d bulging upward are formed side by side along the vehicle front-rear direction. The bulging portion 35d includes
A horizontal surface portion 35e is formed, and the horizontal surface portion 35e is spot-welded to the upper surface portion 21d of the hood ridge reinforcement 21 at the welding position (b). The joint position (b) of the horizontal plane portion 35e is displaced in the vehicle front-rear direction from the joint position (a) of the joint piece 35a.

The patch 36 has a plate shape, and one end edge thereof is struck by being interposed between the hood ridge reinforcement upper surface portion 21d and the second gusset horizontal surface portion 35e.

Further, as shown in FIG. 5, since the plurality of joint pieces 35a of the second gusset 35 are separated from each other, the hood ridge reinforcement inner wheel flange 21b and the hood ridge upper car are separated from each other. Three inner flanges 23b and strut housings 25 are struck by spot welding at the welding position C.

Next, the operation of the vehicle body front structure constructed as above will be described.

During traveling of the vehicle, the strut housing 25
The load that is input to is effectively loaded by the two types of structures as described below, and as a result, the inward collapse of the strut housing 25 can be further suppressed.

That is, the first type of structure is such that when a load is applied to the strut housing 25, the first gusset 2
6 is transmitted to the air box 24 side. In this case, the rear end edge portion 26e of the first gusset 26 is extended rearward from the conventional one, and is joined to the rear end flange 29b of the cowl top center panel 29 of the air box 24, etc. It is possible to bear the load from the air box 24 as a whole as compared with the related art, and it is possible to suppress the inward tilt compared with the related art. In addition, the rear end portion 26 of the first gusset 26
By forming the mounting portion 39 of the wiper pivot 38 on d, it is not necessary to separately provide a bracket or the like for mounting the wiper pivot 38. Furthermore, the first gusset 26
By arranging under the cowl top center panel 29, the mating surface with the peripheral portion of the front window panel (not shown) can be made flat.

In the second type of structure, as shown in FIG. 4, when a load F is applied to the strut housing 25 along the direction of the strut axis O extending obliquely upward, the load F is applied to the center in the vehicle width direction. A horizontal component force Fx toward the side and a vertical component force Fz toward the upper side of the vehicle are generated, and this force is transmitted to the closed cross section 33 side.

In this case, the second gusset 35 is arranged in the closed cross section 33, and the second gusset 35 has a plurality of bulging portions 35d, so that the strength is improved. By arranging the second gussets 35 diagonally, the rigidity of the closed cross section 33 can be improved as compared with the conventional case. Moreover, since the second gusset 35 is obliquely arranged so that the inside of the vehicle is located above, the inclination direction approaches the strut axis O direction (the direction in which the load acts). 35 effectively acts to bear the load. Further, since the horizontal surface portion 35e is formed on the bulging portion 35d of the second gusset 35 and the horizontal surface portion 35e is joined to the hood ridge reinforcement upper surface portion 21d, the horizontal component force Fx is effectively borne. You can Therefore, even when a load acts on the strut housing 25, this load can be effectively beared.

Since it is difficult to spot-weld four plates, a plurality of joint pieces 35a are formed at the upper edge of the second gusset 35 so as to be spaced apart from each other. The hood ridge rain force vehicle inner flange 21 is joined to the force vehicle inner side flange 21b, and the so-called relief portion is provided between the joint pieces 35a.
b, strut housing 25, and hood ridge upper vehicle inner side flange 23b are spot-welded. Since the second gusset 35 cannot be welded at the escape portion, the horizontal surface portion 35 of the bulging portion 35d
By joining e to the hood ridge reinforcement upper surface portion 21d and shifting the position in the vehicle front-rear direction from the joining position of the joining piece 35a, a joining portion at a position corresponding to the escape portion is secured, The strength of the joint between the strut housing 25 and the hood ridge reinforcement 21 is ensured.

Moreover, as in this embodiment, the patch 36
With the interposition of, it is possible to effectively bear the horizontal component force Fx.

[0033]

As described above, according to the invention described in claim 1, since the strut housing and the air box are connected by the first gusset, the load input to the strut housing is Transmitted to the air box. In this case, the rear edge of the first gusset is
Since the air box is extended and joined to the rear end edge of the upper surface of the air box, the load transmitted through the first gusset can be conventionally carried by the entire air box, so that the inside of the strut housing can be prevented. Tipping can be suppressed more than before.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, in addition to the position overlapping the upper surface of the air box of the first gusset and the upper surface of the air box, a wiper pivot is provided. By forming the mounting portion, it is not necessary to dispose a separate bracket for mounting the wiper pivot.

According to the invention described in claim 3, the second
The strength of the gusset is improved by forming a plurality of bulges, and by disposing this second gusset on the diagonal line, the rigidity of the closed cross section can be improved more than before. Moreover, since the second gusset is obliquely arranged so that the inside of the vehicle is located above the inside and outside flanges of the hood ridge reinforcement and the hood ridge upper, the second gusset is inclined. Approaches the axial direction of the strut (direction in which the load acts), so that the second gusset effectively acts to bear the load. Further, since the horizontal surface portion is formed in the bulging portion of the second gusset and the horizontal surface portion is joined to the upper surface portion of the hood ridge reinforcement, it is possible to effectively bear the component force in the horizontal direction. Therefore, even when a load in the inclining direction acts on the strut housing, this load can be effectively beared.

According to the invention described in claim 4, in addition to the effect of the invention of claim 3, since the strut housing is made of a relatively thick material, four plate materials are spot-welded. Since it is difficult, a plurality of joint pieces are formed at the upper edge of the second gusset and are separated from each other, and the joint pieces are joined to the hood ridge reinforcement inner side flange, and so-called clearance portions between the joint pieces are formed. The hood ridge reinforcement inner side flange, the strut housing, and the hood ridge upper inner side flange are spot-welded via. Since the second gusset cannot be welded at the escape portion, the horizontal surface portion of the bulging portion is joined to the hood ridge reinforcement upper surface portion, and the position is shifted in the vehicle longitudinal direction with respect to the joining position of the joining piece. This ensures a joint portion at a position corresponding to the escape portion, and ensures the strength of the joint portion between the strut housing and the hood ridge reinforcement, etc., which is a practically useful effect.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of an embodiment of a vehicle body front structure of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1 showing the same embodiment.

FIG. 3 is a plan view of a second gusset mounting portion showing the same embodiment.

FIG. 4 is a sectional view of a portion taken along line BB in FIGS. 1, 3, and 6 showing the same embodiment.

FIG. 5 is a cross-sectional view of a portion taken along the line CC of FIG. 3 showing the same embodiment.

FIG. 6 is a perspective view of a second gusset showing the embodiment.

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

FIG. 8 is a perspective view corresponding to FIG. 7 showing a conventional example.

FIG. 9 is a perspective view of a strut housing portion showing another conventional example.

FIG. 10 is a sectional view taken along the line D-D of FIG. 9 showing the conventional example.

[Explanation of symbols]

 21 Hood Ridge Reinforce 21a Rear End 21b Car Inner Flange 21c Car Outer Flange 21d Top Surface 23 Hood Ridge Upper 23b Car Inner Flange 23c Car Outer Flange 24 Air Box 24a Both Ends 25 Strut Housing 26 1st Gusset 26e Rear End Edge 33 Closed cross section 35 Second gusset 35a Joining piece 35d Bulging part 35e Horizontal surface part 38 Wiper pivot 39 Mounting part E Engine room

Claims (4)

[Claims] 1. On both sides of the engine room on the front side of the vehicle body,
A hood ridge reinforcement is arranged along the vehicle front-rear direction, a rear end of the hood ridge reinforcement is connected to both ends of an air box, and a strut protruding from the hood ridge reinforcement to the engine room side. A housing is provided, and further, a first gusset for connecting between an upper surface portion of the strut housing and an upper surface portion of the air box is provided, and the first gusset is provided at a rear end edge portion of the upper surface portion of the air box. The front structure of the vehicle body, which is characterized by being extended and joined. 2. The vehicle body front structure according to claim 1, wherein a mounting portion for the wiper pivot is formed at a position overlapping the upper surface of the air box of the first gusset and at the upper surface of the air box. 3. On both sides of the engine room on the front side of the vehicle body,
A hood ridge reinforcement and a hood ridge upper are arranged along the vehicle front-rear direction, and vehicle interior flanges and vehicle exterior flanges of the hood ridge reinforcement and hood ridge upper are respectively joined to form a closed cross section. A strut housing disposed on the engine room side of the closed cross section is joined to the both vehicle inner side flanges, and a second gusset is provided in the closed cross section on the side of the strut housing, the inner side flange and the outer side flange. The second gusset is obliquely arranged along the substantially diagonal line so that the inside of the vehicle is located above the inside of the vehicle, and the upper edge of the inside of the vehicle is interposed between the inside flanges of the second gusset. An outer lower edge is interposed between the vehicle outer flanges, and a plurality of bulging portions that bulge upward are arranged in a line in the vehicle front-rear direction in the middle portion. In is formed,
A front structure of a vehicle body, wherein each of the bulged portions is formed with a horizontal surface portion which is joined to an upper surface portion of the hood ridge reinforcement. 4. The second gusset has a plurality of joint pieces to be joined to the hood ridge rainforce vehicle inner flange, which are formed at a top edge portion of the second gusset so as to be separated from each other, and the hood ridge rain is provided between the joint pieces. The force vehicle inner flange, the strut housing, and the hood ridge upper vehicle inner flange are spot-welded, and the joining position of the horizontal surface portion of the bulging portion to the hood ridge rain force upper surface portion is the vehicle relative to the joining position of the joining piece. The vehicle body front structure according to claim 3, wherein the vehicle front structure is offset in the front-rear direction.