JP3477756B2 - Car body 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 vehicle body structure of an automobile, and more particularly to an improvement of a structure around a rear end portion of a front side frame.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 63-6488.
As disclosed in Japanese Patent Publication No. 3, a pair of left and right front side frames extending in the front-rear direction of the vehicle body are provided in the vehicle body front portion of the automobile as members for ensuring the rigidity of the vehicle body front portion. And this front side frame is
As disclosed in the above-mentioned publication, a reinforcement for reinforcement is provided inside the position near the rear end of the structure so that the rigidity of the rear part becomes particularly high. Thus, at the time of a frontal collision of the automobile, only the front portion of the automobile is buckled and deformed to absorb the collision load, and the influence of the collision load into the vehicle interior is suppressed.

A suspension cross member (hereinafter referred to as suspension cross member) is provided between the pair of left and right front side frames, and one end of a suspension arm extending from the suspension is supported by the suspension cross member. ing. With such a configuration, the load input from the suspension arm is transmitted from the suspension cross member to the front side frame and is absorbed by the front side frame.

As described above, the front side frame is a member that is required to have high rigidity so as to absorb the collision load and the load input from the suspension as described above.

[0005]

However, when it is attempted to obtain high rigidity such that the front side frame can absorb the collision load and the load input from the suspension, the front side frame is not affected by the collision load. It is conceivable to separately provide a reinforcing member for absorbing the load and a reinforcing member for absorbing the load input from the suspension. However, in this case, as the number of parts by these reinforcing members increases, This is not preferable because the weight will be significantly increased and the weight of the vehicle body will be increased.

The present invention has been made in view of this point, and an object of the present invention is to obtain a structure capable of absorbing a collision load and a load from a suspension without causing a significant increase in vehicle body weight. .

[0007]

In order to achieve the above object, the present invention has a structure in which a front side frame and a suspension cross member are connected by a closed cross-section structure. Specifically, in the invention according to claim 1, the rear end portion of the front side frame extending in the vehicle front-rear direction is opened upward.
A rear end portion is joined to the lower surface of the front portion of the floor panel to form a first closed cross section between the floor panel and the front side frame, A dash panel that constitutes a front wall of the vehicle compartment is attached to a position near the end portion, and a reinforcing portion is attached to a position of the front side frame facing the attachment portion of the dash panel. A suspension support member that receives a suspension load is disposed below the front side frame, and the suspension support member is provided.
Between the support member and the front side frame,
The lower surface of the front side frame, the front side frame
The nut plate located on the inner side of the vehicle in the vehicle width direction and the front
The doors located outside the front side frame in the vehicle width direction
Luk box rain allows the lower side of the first closed section to be
An adjacent second closed cross section is formed, and the suspension support member and the front side frame are connected to each other by the nut.
Connect by plate and torque box rain .
Further, the upper <br/> end of the nut plate and the torque box rain, mounted at a position opposed to the mounting portion of the reinforcing member in the front side frame, a sill formed by joining the Lee N'napaneru and the outer panel, The above
From the outer edge of the floor panel in the vehicle width direction to the outside and below the vehicle interior
Provided separately, the nut plate and the torque box
Rain lower and an inner panel lower portion of the side sill connected by preparative <br/> torque box panel, a step panel forming a step for downhill riding, the side sill inner panel
Connected to the upper part of the car and extend a certain distance toward the inside of the vehicle
From the edge of the floor panel to the outer edge of the floor panel in the vehicle width direction
The front side frame in the vehicle width direction outer surface, the torque box rain vehicle width direction outer surface, the torque box panel, the side sill inner panel, the floor panel and the step panel, The third closed cross section is formed so as to be adjacent to the outer sides of the first and second closed cross sections in the vehicle width direction.

[0008] According to a second aspect of the invention, the vehicle body structure of claim 1, forms a mounting portion of the reinforcing member in the front side frame with a closed cross section, nuts
Topu rate and are configured so as to place the said a closed cross section front side frame which is formed by the torque box rain adjacently in the vertical direction.

According to a third aspect of the invention, in the vehicle body structure according to the first or second aspect, the reinforcing member is provided with a vertical portion extending in the vertical direction, and the front side frame also extends in the vertical direction. Provide a vertical part. Then, the vertical portion of the reinforcing member is overlapped and joined to the vertical portion of the front side frame, while the nut is attached.
The upper ends of the plate and the torque box rain are joined to the vertical portion of the front side frame.

The invention according to claim 4 is the same as claim 1, 2 or 3.
Alternatively, in the vehicle body structure of the vehicle described in 3, the dash panel is connected to the front side frame and the reinforcing member, respectively.

[0011]

With the above construction, the present invention provides the following actions. In the invention according to claim 1, not only the reinforcing member is attached to the position near the rear end portion of the front side frame, but also the first closed cross section formed between the front side frame and the floor panel and the lower part thereof. Since the nut plate and the torque box rain forming the second closed cross section with the suspension supporting member are attached to the front side frame at positions facing the attaching portion of the reinforcing member, The rigidity of the rear end is particularly high, and at the time of a frontal collision of the vehicle, only the front part of the front side frame is buckled and deformed by the collision load, and the collision load is absorbed. The impact will be suppressed. Further, the load input from the suspension during traveling of the vehicle is transmitted to the front side frame via the suspension supporting member and is absorbed by the front side frame. between the first closed cross section and the suspension supporting member therebelow, said nut
2nd consisting of top plate and torque box rain
Since the closed cross section of No. 2 is provided, the load is also absorbed by the second closed cross section. Furthermore, the first
In addition to the second closed cross section and the third closed cross section adjacent to the vehicle width direction outer side by using the step panel, the load input from the suspension can be effectively absorbed and the step The rigidity can also be improved.

According to the second aspect of the present invention, the closed cross-section structure portion of the front side frame , the nut plate, and the torque.
By adjoining the closed cross-section structural part made of box rain in the vertical direction, the rigidity of the rear end of the front side frame is improved and the load input from the suspension is more effectively absorbed. .

According to the invention of claim 3, the nut plate
And at the upper end of the torque box rain, this Nattopu
Since the rate and torque box rain , the vertical portion of the reinforcing member, and the vertical portion of the front side frame are overlapped and joined together, three plate members are integrally overlapped at this portion and input from the suspension. Therefore, the load is smoothly transmitted to the highly rigid portion of the front side frame.

According to the fourth aspect of the invention, the dash panel is supported by the highly rigid portion of the front side frame, so that the supporting rigidity thereof is improved.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. In this example, a case will be described in which the configuration of the present invention is applied to a vehicle in which a floor surface is set at a relatively high position with a step at an entrance / exit for passengers.

FIG. 1 is a perspective view of a front side frame 1 of a vehicle according to this embodiment and its peripheral portion as seen from the inside of an engine room, and FIG. 2 is a perspective view of the outside of the front side frame 1. It is the perspective view which abbreviate | omitted one part which looked at the step arrangement position periphery from the vehicle body side.

As shown in FIG. 1, the vehicle body structure of the vehicle in this example includes a pair of left and right front side frames 1 extending in the vehicle front-rear direction in order to secure the rigidity of the front portion of the vehicle.
The front first suspension cross member 2 (hereinafter referred to as the first suspension cross member 2) extending in the vehicle width direction so as to connect the front end portions and the rear end portions of the pair of left and right front side frames 1 to each other.
And a rear side second suspension cross member 3 (hereinafter referred to as a second suspension cross) as a suspension supporting member in the present invention.

Explaining each member, the front side frame 1 is composed of a front side frame inner 1a and a front side frame outer 1b which are respectively formed in a hat shape, and flange portions formed on the upper and lower edges of each of them. It is configured to be joined to each other and have a rectangular closed cross section formed therein. In addition, a flange portion 1c extending inward in the vehicle width direction from the upper end of the front side frame inner 1a and a front side frame are formed around the rear end of the front side frame 1 so that the front side frame 1 is opened upward. Outer 1
A flange portion 1d extending from the upper end of b to the outer side in the vehicle width direction is formed. Also, this front side frame 1
An inverted hat-shaped center frame 4 extending further rearward of the vehicle body is joined to the rear end edge portion. Furthermore, inside the position near the rear end of the front side frame 1,
A front side frame reinforcement 5 (hereinafter referred to as a front frame rain) as a reinforcing member according to the present invention is provided. As shown in FIG. 3, the front frame rain 5 is formed in a U-shaped cross-section that opens outward in the vehicle width direction, and the front half of the upper surface portion 5 a is on the upper surface inside the front side frame 1. The vertical surface portion 5b as a vertical portion is joined to the vertical surface inside the front side frame 1 in the vehicle width direction, and the lower surface portion 5c is joined to the lower surface inside the front side frame 1. That is, the front frame rain 5 is arranged across the closed cross-section structure portion of the front side frame 1 and the open cross-section structure portion that is opened upward on the rear side of the closed cross-section structure portion. Therefore, the rigidity of the vicinity of the rear end of the front side frame 1 is improved.

On the other hand, the first suspension cross 2 extends in the vehicle width direction below the front side frame 1 and is composed of a hat-shaped first suspension cross upper 2a and a first suspension cross lower 2b, respectively. The flange portions formed on the front and rear edges are joined to each other, and a rectangular closed cross section is formed therein.
A bracket 6 is attached below the position of the front side frame 1 facing the outer end of the first suspension cloth 2 so as to hold both the inner and outer side surfaces of the front side frame 1. An end portion of the first suspension cloth 2 is fastened to the front side frame 1 by a fastening member 7 arranged so as to penetrate the upper and lower surfaces and the lower surface of the bracket 6. A fastening arm 2c extending forward of the vehicle body is provided on the front surface of the outer end of the first suspension cloth 2. This fastening arm 2
c is a closed cross-section structural member that is curved upward toward the front of the vehicle body, and its tip is in contact with the lower surface of the front side frame 1 near the front end portion. It is fastened to the front side frame 1 by a fastening member 8 arranged so as to penetrate the lower surface. As a result, the left and right ends of the first suspension cross 2 are firmly fastened to the front end portion of the front side frame 1.

Further, the second suspension cloth 3 is the first suspension described above.
Like the suspension cross 2, the front side frame 1
Of the second suspension cross upper 3a and the second suspension cross lower 3b, each of which is formed in a hat shape and extends in the vehicle width direction below, and the flange portions formed on the front and rear edges of each are joined to each other, It has a configuration in which a rectangular closed cross section is formed therein. An upper end of a nut plate 9 described later is joined to a position of the front side frame 1 facing the end of the second suspension cross 3, and the lower surface of the nut plate 9 is connected to the end of the second suspension cross 3. It is bolted (see Figure 5).
As a result, the left and right ends of the second suspension cross 3 are firmly fastened to the rear end of the front side frame 1. The configuration around the fastening portion of the second suspension cross 3 will be described later.

Reference numeral 10 in FIG. 1 denotes a suspension housing lower, the lower end portion of which is joined to the outer surface of the upper end flange portion of the front side frame 1 as shown in FIG. A suspension housing upper 11 is joined to the upper portion of the suspension housing lower 10,
The suspension housing upper 11 supports the upper end of a strut of a suspension (not shown). Furthermore,
A wheel apron 1 for forming a wheel house on both sides of the suspension housing lower 10 in the longitudinal direction of the vehicle body.
2, 12 are joined. A suspension arm of a suspension device (not shown) is connected to the first suspension cross 2 and the second suspension cross 3, and the thrust load of the suspension input from the suspension arm is the first suspension cross 2 and the second suspension cross 3. It is transmitted to the front side frame 1 via and is absorbed by the front side frame 1.

Next, the peripheral structure of the rear end portion of the front side frame 1 which characterizes the present vehicle body structure will be described. As shown in FIG. 5, a lower end portion of a dash panel 13 for partitioning an engine room and a vehicle compartment is joined to a front end portion of an open cross-section structure portion of the front side frame 1 which is open upward. More specifically, a mounting flange 13a is formed at the lower end of the dash panel 13, and the flange 13a is connected to the flange portions 1c and 1d of the open cross-section structure portion of the front side frame 1 which is open upward. The front frame rain 5 is joined to the upper surface 5a of the front frame rain 5 in a state of being mounted thereon, whereby the support rigidity of the dash panel 13 is improved. A floor panel 14 is mounted on the flanges 1c and 1d of the open side structure portion of the front side frame 1 and the upper surface 5a of the front frame rain 5 from above the flange 13a of the dash panel 13. This floor panel 1 is joined in the state
The reference numeral 4 extends toward the vehicle interior side at the rear of the vehicle body. That is, the open cross-section structure portion of the front side frame 1 having an open upper part constitutes a closed cross-section structure (first closed cross section) C with the floor panel 14. A cowl panel 13b extending forward from the upper end of the dash panel 13 is joined to the upper end edge of the dash panel 13, and the dash panel 1
A dash panel cross member 13c for reinforcing the upper edge portion of 3 is joined.

The shape of the nut plate 9 connecting the second suspension cloth 3 and the front side frame 1 is as shown in FIGS. 2, 5 and 6.
A lower surface portion 9a, which is in contact with the upper surface of the second suspension cloth 3 and is bolted to the second suspension cloth 3, the lower surface portion 9
an inner vertical wall portion 9b bent upward from an inner end in the vehicle width direction of a, a front vertical wall portion 9c and a rear vertical wall portion 9d bent upward from both ends of the lower surface portion 9a in the vehicle front-rear direction. Has been. The nut plate 9 is arranged so as to face the position where the front frame rain 5 is arranged, and the upper end of the inner vertical wall portion 9b is located on the front and rear vertical wall portions 9c and 9d. It is located above the upper end, and the upper end of this inner vertical wall portion 9b is joined to the inner side surface as the vertical portion of the front side frame 1. That is, as shown in FIG. 6, at the upper end of the nut plate 9, the three members of the front frame rain 5, the front side frame inner la and the nut plate 9 are superposed and integrally joined. Become. Therefore, the load input from the suspension is smoothly transmitted to the highly rigid portion of the front side frame 1 via the nut plate 9. A flange portion 9e extending forward of the vehicle body is formed at an upper end of the front side vertical wall portion 9c, and a flange portion 9f extending rearward of the vehicle body is formed at an upper end of the rear side vertical wall portion 9d. , 9f are joined to the lower surface of the front side frame 1.

As one of the features of this embodiment, a tokule box reinforcement having a closed cross-section structure between the front side frame 1 and the nut plate 9 is provided on the vehicle width direction outer side of the float side frame 1. 15
(Hereinafter referred to as "torque box rain"). As shown in FIGS. 2 and 6, the shape of the torque box rain 15 is made of a plate material similar to the shape of the inner vertical wall portion 9b of the nut plate 9, and the lower end thereof extends to the outer side in the vehicle width direction. The flange portion 15a is also formed with side end flange portions 15b and 15c, which are also formed at respective side edge portions in the vehicle body front-rear direction and extend outward in the vehicle width direction. The torque box rain 15 is arranged at a position spaced from the inner vertical wall portion 9b of the nut plate 9 by a predetermined distance, and the lower end flange portion 15a thereof is superposed on the upper surface of the lower surface portion 9a of the nut plate 9. Are joined together, and each side end flange portion 15b, 15c
Are superposed and joined to the inner side surfaces of the front vertical wall portion 9c and the rear vertical wall portion 9d of the nut plate 9, respectively. The upper end of the torque box rain 15 is joined to the outer surface of the front side frame outer 1b. As a result, as shown in FIGS. 5 and 6, a box-shaped space (second closed space) closed by the three members of the front side frame 1, the nut plate 9, and the torque box rain 15.
Surface) A is formed. That is, with respect to the front side frame 1 having a closed cross-section structure reinforced by the front frame rain 5, the second suspension cross 3 is supported via the second closed cross section A formed on the lower side of the front side frame 1. Has been done. As a result, the nut plate 9 and the torque box rain 15 constitute a connecting panel means in the present invention.

A side sill 16 is disposed on the outer side of the torque box rain 15 in the vehicle width direction with a torque box B having a closed cross section interposed therebetween. More specifically, as shown in FIGS. 2 and 6, a torque box panel 17 is disposed outside the torque box rain 15, and the torque box panel 17, the floor panel 14, a step panel 18 described later, and The side sill 16 constitutes a torque box (third closed cross section) B having a closed cross section .

Explaining each member, the torque box panel 17 has a U shape whose side view is open upward as shown in FIG. 2, and extends upward from the lower surface portion 17a and the front end edge of the lower surface portion 17a. A front vertical wall portion 17b and a rear vertical wall portion 17c extending upward from a rear end edge of the lower surface portion 17a are provided, and flanges 17d to 1d are provided at the respective edge portions.
7h is formed. As shown in FIG. 6, the inner edge of the lower surface portion 17a in the vehicle width direction has the nut plate 9
The lower surface portion 9a is overlapped and joined to the lower side.
Therefore, in this part, the torque box rain 15
Lower end flange portion 15a of the nut, the lower surface portion 9 of the nut plate 9
a and the lower surface portion 17a of the torque box panel 17 are superposed on each other and integrally joined.
The side sill 16 is the side sill inner 16a.
And the side sill outer 16b, the flanges formed on the upper and lower edges of each side are joined together to form a closed cross section inside thereof, and as shown in FIG. A flange 17d on the outer edge in the vehicle width direction of the lower surface 17a of the torque box panel 17 is joined to the lower surface of the inner 16a. Further, as shown in FIGS. 2 and 9, the front vertical wall portion 17b of the torque box panel 17 is curved upward along the shape of the front pillar 16 'in which the side sill 16 is curved forward. The flange 17e formed on the outer edge portion in the vehicle width direction is joined to the lower surface portion of the side sill inner 16a and the front edge portion of the front pillar 16 '. In addition, the front vertical wall portion 17b of the torque box panel 17
The flange 17f formed on the upper edge of the is joined to the lower surface of the floor panel 14. Further, the vehicle width direction inner edge of the front vertical wall portion 17b of the torque box panel 17 is superposed and joined to the outer surface of the front vertical wall portion 9c of the nut plate 9. On the other hand, the rear vertical wall portion 17c of the torque box panel 17 is formed along the shape of the step panel 18, and is formed at the vehicle width direction outer edge portion thereof as shown in FIG. The flange 17g is joined to the lower surface of the step panel 18. A flange 17h formed on the upper edge of the rear vertical wall portion 17c of the torque box panel 17 is joined to the lower surface of the floor panel 14. Further, the inner edge of the rear vertical wall portion 17c of the torque box panel 17 in the vehicle width direction is overlapped and joined to the outer surface of the rear vertical wall portion 9d of the nut plate 9. On the other hand, the step panel 18 constitutes a step when an occupant gets in and out of the vehicle, and is made of a plate material having an L-shaped vertical cross section, and an upper edge of the step panel 18 is the width of the floor panel 14. It is joined to the lower surface of the outer edge portion in the direction, and its lower end edge is joined to the upper end surface of the side sill inner 16a (see FIG. 8). In this way, the torque box panel 17, the floor panel 14, the step panel 18, and the side sill 16 constitute a torque box B having a closed cross section.

As an operation of the above-described structure, firstly, at the time of a frontal collision of the vehicle, not only the front frame rain 5 is provided inside the rear end portion of the front side frame 1 but also the front side of the front side frame 1. Since the closed cross section A composed of the front side frame 1, the nut plate 9 and the torque box rain 15 is adjacent to the lower side of the front side frame 1 so as to face the position where the frame rain 5 is disposed, this front side frame 1 Since the rear part 1 has a particularly high rigidity, only the front part of the front side frame 1 can be buckled and deformed by the collision load to absorb the collision load, and the influence of the collision load into the vehicle interior is suppressed. It will be.

Further, the load input from the suspension arm during traveling of the vehicle is transmitted from the suspension cloths 2 and 3 to the front side frame 1 and absorbed by the front side frame 1, but as described above,
Since the second closed cross section A is arranged between the front side frame 1 and the second suspension cross 3, the load can be absorbed also by the closed cross section. Further, in particular, since the connection state of the nut plate 9 and the torque box rain 15 to the front side frame 1 is in the shearing direction via the load input from the suspension arm, the rigidity with respect to this load is particularly ensured to be high. Will be.

Further, in such a load absorbing operation, since the second closed cross section A and the closed cross section of the front side frame 1 are vertically adjacent to each other, the rear side of the front side frame 1 is The rigidity of the end portion is improved and the load input from the suspension is effectively absorbed.

As described above, according to the configuration of this embodiment, the front side frame 1 is provided with the reinforcing member for absorbing the collision load and the reinforcing member for absorbing the load input from the suspension. Since these loads can be effectively absorbed without any trouble, the collision load and the load from the suspension can be absorbed without causing a significant increase in the weight of the vehicle body.

In this example, the vehicle in which the floor surface is set at a relatively high position with a step at the entrance / exit of the occupant has been described. However, the present invention is not limited to this, and is not limited to a general passenger car. Can be adopted.

[0032]

As described above, according to the present invention, the following effects are exhibited. According to the invention of claim 1, the suspension support member and the front side frame are provided with a first closed cross section formed between the front side frame and the floor panel and a second closed cross section between the suspension support member. Forming nut pre
Linked by over preparative and torque box rain, the Na
Ttopureto and on the end portion of the torque box rain, because of to attach at a position opposed to the mounting portion of the reinforcing member in the front side frame, the rigidity of the rear end portion of the front side frame is made particularly high, before the vehicle It is possible to effectively absorb the collision load at the time of a collision and suppress the influence of the collision load into the vehicle interior.
Nattopure between the closed section and the suspension supporting member
And a torque box rain form a second closed cross section, and a third closed cross section is formed by using a step panel adjacent to the outer sides of the first and second closed cross sections in the vehicle width direction. The rigidity of the step for getting on and off can be sufficiently secured while effectively absorbing the load input from the suspension during traveling. This allows the front side frame to effectively absorb the collision load without separately providing a reinforcement member for absorbing the collision load and a reinforcement member for absorbing the load input from the suspension. Therefore, the collision load and the load from the suspension can be absorbed without causing a significant increase in the vehicle body weight, and the rigidity of the step can be improved.

According to the second aspect of the present invention, the mounting portion of the reinforcing member in the front side frame has a closed sectional structure, and the closed sectional structure is formed by the nut plate and the torque box rain . Since the front side frame and the front side frame are vertically adjacent to each other, the rigidity of the rear end of the front side frame can be improved and the load input from the suspension can be absorbed more effectively. .

According to the third aspect of the present invention, the reinforcing member is provided with the vertical portion extending in the vertical direction, and the front side frame is also provided with the vertical portion extending in the vertical direction, and the vertical portion of the reinforcing member is provided. On the vertical side of the front side frame, and join them together.
Since the upper ends of the door and the torque box rain are joined to the vertical portion of the front side frame,
The load input from the suspension can be smoothly transmitted to the highly rigid portion of the front side frame, and the load absorbing performance can be improved.

According to the invention as set forth in claim 4, since the dash panel is connected to the front side frame and the reinforcing member respectively, the support rigidity of the dash panel can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a front side frame and its peripheral portion as viewed from the inside of an engine room with a part omitted.

FIG. 2 is a perspective view in which a part of the periphery of the step arrangement position outside the front side frame is viewed from the side of the vehicle body and is omitted.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

5 is a sectional view taken along line VV in FIG.

FIG. 6 is a sectional view taken along line VI-VI in FIG.

7 is a sectional view taken along line VII-VII in FIG.

8 is a cross-sectional view taken along the line VIII-VIII in FIG.

9 is a sectional view taken along line IX-IX in FIG.

[Explanation of symbols]

1 Front Side Frame 3 Second Suspension Cross Member (Suspension Supporting Member) 5 Front Side Frame Reinforcement (Reinforcing Member) 5b Vertical Surface (Vertical) 9 Nut Plate (Connecting Panel Means) 13 Dash Panel 15 Torque Box Reinforcement (Connecting panel means)

Front page continued (58) Fields surveyed (Int.Cl. ⁷ , DB name) B62D 25/20 B62D 25/22 B62D 25/08

Claims (4)

(57) [Claims] 1. An open cross-section structure in which a rear end portion of a front side frame extending in the vehicle front-rear direction is opened upward.
Then, the rear end is joined to the lower surface of the front part of the floor panel,
First between the floor panel and the front side frame
A closed cross section of the front side frame is formed, and a dash panel that constitutes a front wall of the vehicle compartment is attached to a position near the rear end of the front side frame, and a position facing the attachment portion of the dash panel in the front side frame. is attached a reinforcing member in, below the front side frames, the suspension support member for receiving the suspension load is disposed, the front side frame with the suspension supporting member
Between the underside of the front side frame and the
The nut located inside the front side frame in the vehicle width direction
Direction of the front plate and the front side frame
Due to the torque box rain located outside, the first
Second closed section is formed adjacent to the lower side of the closed cross-section, the suspension support member and said front side frame, said nut plate and the torque box Rey
Are connected by a nut , and the nut plate and the torque
On the end portion of the box rain, the attached at a position opposed to the mounting portion of the reinforcing member in the front side frame, side sill formed by joining the Lee N'napaneru and outer panel, the vehicle width direction outer edge of the floor panel From outside the vehicle
And provided apart from downward, the nut plate and the torque box Lane bottom and the inner panel lower portion of the side sill is connected by a torque box panel, the step panel to form a step for downhill riding, the rhino
Specified to the inside of the vehicle by being joined to the top of the dosile inner panel
Extend the distance from the edge of the interior of this vehicle
The front side frame is formed to extend to the outer edge in the width direction, and the outer surface in the vehicle width direction of the front side frame ,
A third laterally adjacent outer side in the vehicle width direction of the first and second closed cross sections by the vehicle width direction outer side surface of the Luc Box Rain, the torque box panel, the inner panel of the side sill, the floor panel and the step panel. A vehicle body structure having a closed cross section. 2. A mounting portion of the reinforcing member in the front side frame is made with a closed cross section, the nut play
2. The vehicle body structure according to claim 1, wherein a closed cross-section structure formed by a toe and a torque box rain and the front side frame are arranged adjacent to each other in a vertical direction. 3. The reinforcing member has a vertical portion extending in the vertical direction, and the front side frame also has a vertical portion extending in the vertical direction, and the vertical portion of the reinforcing member has a vertical portion of the front side frame. While being overlapped and joined to the parts, the nut plate and torque
An upper end portion of the x-ray is joined to a vertical portion of the front side frame.
Or the vehicle body structure of the automobile according to 2. 4. The vehicle body structure for an automobile according to claim 1, wherein the dash panel is connected to the front side frame and the reinforcing member, respectively.