JP4997308B2 - Body front structure - Google Patents

Description

  The present invention relates to a vehicle body front structure in which a dash lower panel for partitioning a vehicle compartment and an engine room is provided, and a steering shaft passes through the dash lower panel.

  The vehicle body front structure reinforces the mounting part of the brake booster by joining the dash lower panel that forms the front wall of the passenger compartment, the dash cross member that is joined to the dash lower panel and extending in the vehicle width direction, and the dash lower panel. Reinforcement is provided.

At the bottom of the dash lower panel, left and right vertical frames such as a front side frame are arranged along the dash lower panel.
Both ends of the dash cross member are connected to the left and right vertical frames. The center part in the vehicle width direction of the dash cross member is joined to a tunnel part formed in the dash lower panel and extending along the vehicle front-rear direction.

  The reinforcement includes a reinforcement body, and a reinforcing arm portion that extends from the reinforcement body inward in the vehicle width direction and is joined to a center portion in the vehicle width direction of the dash cross member.

  According to this vehicle body front structure, it is possible to distribute the load input to the reinforcement via the reinforcement body and the reinforcement arm and transmit it to other parts of the vehicle (for example, patents). Reference 1).

JP 2007-30627 A

  Here, in the vehicle body front part structure of Patent Document 1, a steering shaft that steers the vehicle body is passed through the dash lower panel and at the upper position of the dash cross member. For example, when the steering shaft is moved below the vehicle body, the steering gear box is moved backward, the engine room of the vehicle body is designed to be short, and the vehicle body is to be downsized, the steering shaft interferes with the dash cross member. However, the steering shaft cannot be moved below the vehicle body.

In the vehicle body front structure, when the steering shaft is passed through the dash lower panel, a steering opening is formed in the dash lower panel. Therefore, it is desired to improve the strength and rigidity around the steering opening.
Furthermore, vehicle surface collision (front collision) occurs, for example, to prevent bending of the left and right vertical frames where the rear end of the front side frame is coupled to the front end of the floor frame and to smoothly distribute the collision load. is there.

  It is an object of the present invention to provide a vehicle body front structure that can move a steering shaft downward of a vehicle body, move a steering gear box rearward, and reduce the longitudinal length of the vehicle body. It is another object of the present invention to provide a vehicle body front structure capable of improving strength and rigidity around a steering opening that penetrates a steering shaft. It is another object of the present invention to provide a vehicle body front structure that can prevent the left and right vertical frames extending in the longitudinal direction of the vehicle body from bending when a front collision occurs and can smoothly disperse the collision load.

The invention according to claim 1 includes a dash lower panel that partitions the vehicle body into an engine room and a vehicle compartment, and left and right vertical frames extending in the longitudinal direction of the vehicle body, with the rear ends of the left and right front side frames coupled to the front ends of the left and right floor frames. And a dash cross member that extends along the vehicle width direction of the dash lower panel and is connected to the left and right vertical frames, and a steering shaft of the steering that penetrates the dash lower panel and the dash cross member. In the dash lower panel, a vertical portion extending in the height direction of the vehicle body, an inclined portion inclined from the lower end of the vertical portion to the passenger compartment side through the bent portion, and on the left and right sides of the bent portion And a raised portion raised to the engine room side, and a steering opening formed in the raised portion and passing the steering shaft, In Tsu shoe cross member comprises an annular portion having a member-side opening through which the steering shaft is provided so as to face the raised portion, and the vicinity of the dash upper panel is and joined to the dash lower panel at the top of the dash lower panel, the dash cross member A reinforcing panel that improves the rigidity of the dash lower panel is installed between the annular portion and the bent portion and the dash cross member to form a closed section in a side view, and the peripheral edge of the raised portion and the annular portion of the dash cross member Is characterized by overlapping.
The invention according to claim 2 is characterized in that the dash cross member has a left straight portion provided on the left side of the vehicle body and connected to the left vertical frame, and a right straight member provided on the right side of the vehicle body and connected to the right vertical frame. An annular portion having a member side opening through which the steering shaft passes, a curved portion provided in the center of the left and right straight portions, and being close to the central tunnel portion of the dash lower panel, It is characterized by comprising.

In the invention according to claim 3 , the left and right vertical frames are respectively curved toward the inside of the vehicle body, dash cross members are disposed on the inner convex portions thereof , and the left and right vertical frames extend in the left-right direction of the vehicle body across the engine room and the center tank. The front cross member that connects the inner convex portions of the left and right vertical frames is arranged behind the dash cross member in the curved portion .

The invention according to claim 4 is characterized in that the closed cross-section is a parallelogram in a side cross-sectional view and a shape protruding toward the passenger compartment.

The invention according to claim 5 is characterized in that a steering compartment side lid member for closing the member side opening and a steering engine room side lid member for closing the steering opening side from the engine room side are provided.

The present invention has the following effects.
In the invention according to claim 1, the dash lower panel that partitions the vehicle body into the engine room and the vehicle compartment and the rear ends of the left and right front side frames are coupled to the front ends of the left and right floor frames in the vehicle body front structure. A dash cross member extending along the vehicle width direction of the dash lower panel and connected to the left and right vertical frames, and a steering shaft of the steering penetrating the dash lower panel and the dash cross member. .
In the dash lower panel, a vertical portion extending in the height direction of the vehicle body, an inclined portion inclined from the lower end of the vertical portion to the vehicle compartment side through the bent portion, and on the left and right sides of the bent portion and in the engine room And a steering opening formed on the protruding portion and passing through the steering shaft.
The dash cross member is provided with an annular portion having a member-side opening through which the steering shaft passes and is provided opposite to the raised portion, in the vicinity of the dash upper panel joined to the dash lower panel and on the dash cross member. Since the reinforcing panel for improving the rigidity of the dash lower panel is installed between the annular portion provided, the steering gear box to which the steering shaft is coupled can be moved rearward and disposed below the inclined portion of the dash lower panel. Thereby, the engine arrange | positioned in an engine room can be retreated to the dash lower panel side. As a result, the front-rear length of the vehicle body can be shortened, and the vehicle body can be reduced in size.
In addition, the bent section and the dash cross member form a closed section in a side view, and the peripheral edge of the raised portion and the annular portion of the dash cross member overlap, so that the strength and rigidity around the steering opening can be improved. The strength and rigidity of the dash cross member can be ensured.
The invention according to claim 2 is characterized in that the dash cross member has a left straight portion provided on the left side of the vehicle body and connected to the left vertical frame, and a right straight member provided on the right side of the vehicle body and connected to the right vertical frame. An annular portion having a member side opening through which the steering shaft passes, a curved portion provided in the center of the left and right straight portions, and being close to the central tunnel portion of the dash lower panel, It consists of.

In the invention according to claim 3 , since the left and right vertical frames are respectively curved toward the inside of the vehicle body and the dash cross member is disposed on the inner convex portion thereof, the left and right extending in the vehicle body longitudinal direction when a front collision occurs. Can be prevented from bending inward. Thereby, a collision load can be disperse | distributed smoothly.
Further, a center tank for storing fuel is disposed inside the left and right vertical frames and in the lower part of the passenger compartment, and the left and right vertical frames are curved inward in the left-right direction of the vehicle body across the engine room and the center tank, Since the front cross member that connects the inner convex part of the left and right vertical frames is arranged behind the dash cross member in the curved part, the left and right vertical frames that extend in the longitudinal direction of the vehicle body bend inward when a front collision occurs This can be further prevented by reinforcing the left and right vertical frames back and forth within the curved portion as compared to the case of only the dash cross member. Thereby, a collision load can be more smoothly disperse | distributed.

In the invention according to claim 4 , since the closed cross-section is a parallelogram in a side cross-sectional view and a shape projecting toward the passenger compartment, the strength and rigidity of the dash cross member can be improved. Further, the annular portion can be continuous with the closed cross section to supplement the strength and rigidity of the dash cross member.

According to the fifth aspect of the present invention, since the steering compartment side lid member for closing the member side opening and the steering engine room side lid member for closing the steering opening side from the engine room side are provided, the steering opening is greatly opened. Can do. As a result, the steering shaft can be easily assembled.

It is a perspective view which shows the vehicle body front part structure which concerns on this invention. FIG. 3 is a bottom view of the vehicle body front part structure shown in FIG. 2. It is a schematic diagram of the 3-3 line cross section of FIG. FIG. 4 is a schematic diagram of a cross section when the steering is illustrated in FIG. 3. It is a schematic diagram of the 5-5 line cross section of FIG. FIG. 6 is a schematic diagram of a cross section taken along line 6-6 in FIG. 1. It is a schematic diagram of a 7-7 line cross section of FIG. It is a schematic diagram of the 8-8 line cross section of FIG. FIG. 2 is an operation explanatory diagram of the vehicle body front part structure shown in FIG. 1.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.

As shown in FIGS. 1 to 4, the vehicle body front structure 10 includes a dash lower panel (dashboard lower) 21 that partitions the vehicle body 11 into an engine room 13 in which an engine 14 is housed and a vehicle compartment 12, and the dash lower panel. A dashboard upper panel (dashboard upper) 22 provided on the upper portion of the engine 21 and partitions the vehicle body 11 into the engine room 13 and the vehicle compartment 12, and the rear ends of the left and right front side frames 23, 23 are left and right floor frames 24, 24. Left and right vertical frames 25 and 25 that extend in the vehicle longitudinal direction, and a dash cross member 27 that extends along the vehicle width direction of the dash lower panel 21 and is connected to the left and right vertical frames 25 and 25; A front cross member 2 provided behind the dash cross member 27 and connecting the left and right vertical frames 25, 25. A left reinforcing panel 31 passed to the upper left portion of the dash cross member 27 and the upper left portion of the dash lower panel 21, and a right reinforcing panel 32 passed to the upper right portion of the dash cross member 27 and the upper right portion of the dash lower panel 21. A steering gear box 33 disposed under the dash lower panel 21; a steering shaft 34 that extends through the dash lower panel 21 and the dash cross member 27 and extends from the steering gear box 33 toward the vehicle compartment 12; A vehicle compartment side lid member 35 through which the steering shaft 34 penetrates, and an engine room side lid member 36 provided on the engine room 13 side and provided between the steering gear box 33 and the dash lower panel 21. .
In addition, the x mark shown in FIGS. 3-8 has shown the welding location. The steering gear box 33 and the steering shaft 34 are components of the steering 29. The steering 29 is a device that mainly includes a steering column (not shown) and a steering wheel (not shown) in addition to the steering gear box 33 and the steering shaft 34.

  The dash lower panel 21 includes a vertical portion 41 extending in the height direction of the vehicle body 11 and an inclined portion 43 inclined from the lower end of the vertical portion 41 toward the vehicle compartment 12 via a bent portion 42 (see FIG. 5). And a central tunnel portion 44 that protrudes toward the vehicle compartment 12 side in the vehicle width approximate center of the bent portion 42 and the inclined portion 43, and is raised to the left and right side (right side) of the bent portion 42 and to the engine room 13 side. A raised portion 45 and a steering opening 46 formed in the raised portion 45 and through which the steering shaft 34 passes are provided.

  The dash lower panel 21 includes a thin plate portion 38 formed of a thin plate and a thick plate portion 39 formed of a thick plate. Upper portions of the vertical portion 41, the inclined portion 43, the bent portion 42, the raised portion 45, the steering opening 46, and the central tunnel portion 44 are portions formed in the thin plate portion 38. The lower portion of the central tunnel portion 44 is a portion formed in the thick plate portion 39 and having increased strength and rigidity.

  Further, as shown in FIG. 5, a dash upper panel 22 and a windshield lower end support plate 37 that supports the lower end of a windshield (not shown) are provided on the upper portion of the dash lower panel 21.

  The left and right front side frames 23, 23 are frames extending in the longitudinal direction of the vehicle body at the lower part of the engine room 13. The left and right floor frames 24, 24 are frames that extend from the rear ends of the left and right front side frames 23, 23 to the lower part of the passenger compartment 12.

  The left and right vertical frames 25, 25, in which the left and right front side frames 23, 23 and the left and right floor frames 24, 24 are connected, have inner convex portions 48, 48 whose central portions are curved inward of the vehicle body 11, respectively. A dash cross member 27 is connected to the front portions of the inner convex portions 48, 48. A front cross member 28 is disposed behind the dash cross member 27 and behind the inner convex portions 48, 48.

In the vehicle body front structure 10, a horizontally placed engine 14 is disposed between the left and right front side frames 23, 23, and a fuel tank (center tank) 16 is disposed between the left and right floor frames 24, 24. Yes. In this relation, as described above, the left and right vertical frames 25 and 25 include inner convex portions 48 and 48 whose central portions are curved toward the inside of the vehicle body 11, respectively. The fuel tank 16 is also called a center tank because it is disposed at the center of the vehicle body in the vehicle longitudinal direction and the vehicle width direction.
The left and right vertical frames 25, 25, which are composed of the left and right front side frames 23, 23 and the left and right floor frames 24, 24, are curved portions (vertical) that curve inward in the vehicle body left-right direction across the engine room and the center tank. Frame bending portions) 47, 47 are formed. Accordingly, the central portions of the curved portions (vertical frame curved portions) 47 and 47 correspond to the inner convex portions 48 and 48 described above.

  Therefore, when a frontal collision (front collision) occurs, an inward buckling load acts on the left and right vertical frames 25 and 25. Therefore, a dash cross member 27 and a front cross member 28 are provided between the left and right vertical frames 25 and 25 to prevent buckling. Further, the tunnel portion 17 is extended behind the central tunnel portion 44 of the dash lower panel 21.

The dash cross member 27 includes a left straight portion 51 provided on the left side of the vehicle body 11 and connected to the left vertical frame 25, and a right straight portion 52 provided on the right side of the vehicle body 11 and connected to the right vertical frame 25. And an annular portion 55 having a member-side opening 53 through which the steering shaft 34 passes and a center tunnel of the left and right straight portions 51, 52. And a bending portion (cross member bending portion) 54 to be brought close to the portion 44.
It can be said that the member-side opening 53 is provided to face the raised portion 45 of the dash lower panel 21.

  The vehicle compartment side lid member 35 is provided with a lid side opening 57 that penetrates the steering shaft 34. Further, it is fastened to the annular portion 55 of the dash cross member 27 with bolts 61 and 62. The lid side opening 57 is smaller than the steering opening 46 formed in the raised portion 45 of the dash lower panel 21.

  By forming the steering opening 46 formed in the raised portion 45 of the dash lower panel 21 to be large, it is easy to assemble the steering shaft 34 to the vehicle compartment 12 side. Moreover, the strength and rigidity around the annular portion 55 are improved by forming the lid-side opening 57 of the passenger compartment-side lid member 35 small.

  The engine room side cover member 36 is a member that closes around the steering gear box 33 and the dash lower panel 21. Further, the bolts 63 to 65 are fastened to the dash lower panel 21 side and the steering gear box 33 side.

  As shown in FIGS. 3 and 4, the dash cross member 27 is provided with a member side opening 53 through which the steering shaft 34 passes, and the member side opening 53 is closed by the vehicle compartment side cover member 35, so that the vehicle compartment side By forming the second closed section 72 with the lid member (lid member) 35 and the raised portion 45 of the dash lower panel 21, the steering gear box 33 can be disposed near the bent portion 42 of the dash lower panel 21. That is, the vehicle body can be downsized.

  As shown in FIG. 4, the raised portion 45 raised on the right side of the bent portion 42 and on the engine room 13 side can be said to be a portion raised across the vertical portion 41 and the inclined portion 43.

  As shown in FIG. 5, a reinforcing side closed section 76 is formed between the right reinforcing panel 32 and the dash lower panel 21, and the rigidity of the dash lower panel 21 is improved. The left reinforcing panel 31 also has a reinforcing side closed cross section (not shown) between the dash lower panel 21 and the right reinforcing panel 32.

  That is, the strength and rigidity of the dash lower panel 21 are improved. The left and right reinforcing panels 31 and 32 are installed between the dash cross member 27 and the dash upper panel 22 to further improve the strength and rigidity of the dash cross member 27. In particular, the annular portion 55 is reinforced.

  Further, as shown in FIG. 5, the bent portion 42 of the dash lower panel 21 and the right straight portion 52 of the dash cross member 27 form a closed section (first closed section) 71 in a side view. As shown in FIG. 6, the first closed cross-section 71 has a parallelogram shape in a side cross-sectional view and a shape protruding toward the vehicle compartment 12 side. The amount of protrusion into the vehicle compartment 12 can be reduced by using the first closed section 71 as a parallelogram.

As described above, the raised portion 45 of the dash lower panel 21 and the passenger compartment side cover member 35 form a second closed section 72 in a side view (see FIG. 3).
As shown in FIG. 8, the first and second closed cross-sections 71 and 72 are formed continuously.

  As shown in FIG. 6, the bent portion 42 of the dash lower panel 21 and the curved portion 54 of the dash cross member 27 constitute a third closed section 73. The third closed cross-section 73 is a substantially trapezoidal or semicircular closed cross-section that protrudes from the upper portion (the raised portion) of the central tunnel portion 44 of the dash lower panel 21. The third closed section 73 is substantially trapezoidal or semicircular so that the dash cross member 27 can be easily press-formed. Further, the strength and rigidity can be increased.

  In addition, the third closed cross-section 73 is formed so that the curved portion 54 formed in the central portion of the dash cross member 27 is close to the central tunnel portion 44 having high rigidity, so that the rigidity of the dash cross member 27 in the vehicle width direction is increased. Improvements can be made.

As shown in FIG. 7, the bent portion 42 of the dash lower panel 21 and the left straight portion 51 of the dash cross member 27 form a fourth closed section 74. It is a parallelogram in a side sectional view and a shape protruding toward the passenger compartment 12 side.
The first to fourth closed sections 71 to 74 are also formed as closed sections communicating in the vehicle width direction.

  As shown in FIGS. 1 to 8, the vehicle body front structure 10 has a dash lower panel 21 that partitions the vehicle body 11 into an engine room 13 and a vehicle compartment 12, and the rear ends of the left and right front side frames 23, 23 are left and right. The left and right vertical frames 25, 25 are connected to the front ends of the floor frames 24, 24, and extend in the vehicle width direction of the dash lower panel 21, and are connected to the left and right vertical frames 25, 25. The dash cross member 27 and the steering shaft 34 of the steering 29 penetrating the dash lower panel 21 and the dash cross member 27 are provided.

  In the dash lower panel 21, a vertical portion 41 extending in the height direction of the vehicle body 11, an inclined portion 43 inclined from the lower end of the vertical portion 41 to the vehicle compartment 12 via the bent portion 42, and a bent portion 42 And a steering opening 46 formed on the raised portion 45 and through which the steering shaft 34 is passed.

  The dash cross member 27 is provided with an annular portion 55 having a member-side opening 53 provided so as to face the raised portion 45 and through which the steering shaft 34 passes.

  Since the dash cross member 27 is provided with a member side opening 53 that is provided to face the raised portion 45 and through which the steering shaft 34 is passed, the steering gear box 33 to which the steering shaft 34 is coupled is moved rearward so that the dash lower panel 21 It can be arranged below the inclined portion 43.

  Thereby, the engine 14 arrange | positioned in the engine room 13 can be retreated to the dash lower panel 21 side. As a result, the front-rear length of the vehicle body can be shortened, and the vehicle body 11 can be downsized.

  Further, the bent portion 42 and the dash cross member 27 form a closed cross section (first closed cross section) 71 in a side view, and the raised portion 45 and the annular portion 55 of the dash cross member 27 overlap each other. The strength and rigidity of the dash cross member 27 can be secured.

  The left and right vertical frames 25, 25 are respectively curved toward the inside of the vehicle body 11, and the dash cross members 27 are disposed on the inner convex portions 48, 48. It is possible to prevent the vertical frames 25, 25 from bending inward. Thereby, a collision load can be disperse | distributed smoothly.

  The closed cross section (first closed cross section) 71 is a parallelogram in a side cross sectional view and has a shape protruding to the vehicle compartment 12 side, so that the strength and rigidity of the dash cross member 27 can be improved. Further, the annular portion 55 can be continuous with the first closed cross-section 71 to supplement the strength and rigidity of the dash cross member 27.

  In the vehicle body front structure 10, the vehicle compartment side lid member 35 of the steering 29 that closes the member side opening 53 and the engine room side lid member 36 of the steering 29 that closes the steering opening 46 side from the engine room 13 side are provided. The steering opening 46 can be greatly opened. As a result, the steering shaft 34 can be easily assembled.

  As shown in FIG. 9A, when a front collision load acts from the front of the vehicle body 11 as indicated by an arrow a1, the front collision load is applied to the left and right front side frames 23 and 23 as indicated by arrows a2 and a2. Then, it is transmitted from the left and right front side frames 23, 23 to the left and right floor frames 24, 24 as indicated by arrows a3, a3.

  In the vehicle body front structure 10, as shown in FIG. 2, the horizontal engine 14 is disposed between the left and right front side rooms, and the fuel tank 16 is disposed between the left and right floor frames 24, 24. . In this relation, as described above, the left and right vertical frames 25 and 25 formed by the left and right front side frames 23 and 23 and the left and right floor frames 24 and 24 are respectively inwardly convex with the center portion curved inward of the vehicle body 11. Portions 48 and 48 are formed.

  Therefore, as shown in FIG. 9 (b), buckling loads are generated as indicated by arrows a4 and a4 toward the inside of the left and right vertical frames 25, 25, and the left and right vertical frames 25, 25 are moved to the inside. It acts to bend.

  In the vehicle body front structure 10, the dash cross member 27 and the front cross member 28 are arranged in this order on the inner convex portions 48, 48 of the left and right vertical frames 25, 25. , 25 can resist a buckling load acting inward. That is, the left and right vertical frames 25, 25 are prevented from being deformed, and the front impact load can be smoothly transmitted.

  In the vehicle body front structure 10, a center tank 16 for storing fuel is disposed inside the left and right vertical frames 25, 25 and below the vehicle compartment 12 (see FIG. 2), and the left and right vertical frames 25, 25 are arranged in the engine room. 13 and the center tank 16 are curved inward in the left-right direction of the vehicle body, and the inner convex portions 48, 48 of the left and right vertical frames 25, 25 are connected to the rear of the dash cross member 27 in the curved portions 47, 47. Since the front cross member 28 is disposed, the left and right vertical frames 25, 25 extending in the longitudinal direction of the vehicle body are bent inward when a front collision occurs, as compared with the case of the dash cross member 27 alone. Can be prevented. Thereby, a collision load can be more smoothly disperse | distributed.

  In the vehicle body front structure according to the present invention, as shown in FIG. 3, the raised portion 45 is provided on the right side of the vehicle body 11, but the present invention is not limited to this, and is provided on the side where the steering shaft 34 is disposed. Anything can be used. That is, the raised portion 45 may be raised on the left and right sides of the bent portion 42 and on the engine room 13 side.

  The present invention is provided with a dash lower panel, provided with left and right vertical frames composed of left and right front side frames and left and right floor frames, and provided with a dash cross member connected to the left and right vertical frames. It is suitable for application to an automobile having a vehicle body front structure in which a steering shaft penetrating the cross member is provided.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle body front part structure, 11 ... Vehicle body, 12 ... Vehicle compartment, 13 ... Engine room, 21 ... Dash lower panel, 23 ... Front side frame, 24 ... Floor frame, 25 ... Vertical frame, 27 ... Dash cross member, 28 ... Front cross member, 34 ... steering shaft, 35 ... vehicle compartment side cover member, 41 ... vertical portion, 42 ... bent portion, 43 ... inclined portion, 45 ... raised portion, 46 ... steering opening, 48 ... inner convex portion, 71 ... Closed section (first closed section).

Claims (5)

A dash lower panel that partitions the vehicle body into an engine room and a vehicle compartment, left and right vertical frames that extend in the longitudinal direction of the vehicle body with the rear ends of the left and right front side frames joined to the front ends of the left and right floor frames, and the vehicle width of the dash lower panel A vehicle body front structure including a dash cross member extending along a direction and connected to the left and right vertical frames, and a steering shaft of a steering penetrating the dash lower panel and the dash cross member,
The dash lower panel includes a vertical portion extending in the height direction of the vehicle body, an inclined portion inclined from the lower end of the vertical portion to the vehicle compartment side via a bent portion, and one of left and right sides of the bent portion And a raised portion raised to the engine room side, and a steering opening formed in the raised portion and passing through the steering shaft,
The dash cross member includes an annular portion provided facing the raised portion and having a member side opening through which the steering shaft passes.
A reinforcing panel for improving the rigidity of the dash lower panel is installed between the upper portion of the dash lower panel and the vicinity of the dash upper panel joined to the dash lower panel and the annular portion provided in the dash cross member,
A vehicle body front structure characterized in that the bent portion and the dash cross member form a closed cross section in a side view, and a peripheral edge of the raised portion and an annular portion of the dash cross member overlap. The dash cross member includes a left straight portion provided on the left side of the vehicle body and connected to a left vertical frame; a right straight portion provided on the right side of the vehicle body and connected to a right vertical frame; The annular portion having the member-side opening through which the steering shaft passes, and the curved portion provided in the center of the left and right straight portions to be close to the central tunnel portion of the dash lower panel. The vehicle body front part structure according to claim 1, comprising: The left and right vertical frames are each curved toward the inside of the vehicle body, and the dash cross member is disposed on the inner convex portion thereof .
A center tank for storing fuel is disposed inside the left and right vertical frames and in the lower part of the passenger compartment,
The left and right vertical frames curve inward in the left-right direction of the vehicle body across the engine room and the center tank, and the inner convex portions of the left and right vertical frames are located behind the dash cross member in the curved portion. The vehicle body front part structure according to claim 1 or 2, wherein a front cross member is connected to each other . The vehicle body front structure according to any one of claims 1 to 3, wherein the closed cross section has a parallelogram shape in a side cross sectional view and a shape projecting toward the passenger compartment. A cabin side cover member of the steering to close the member side opening, either from the engine room side of claims 1 to 4, wherein the said steering engine room side lid member for closing the steering opening side is provided vehicle body front structure of the first or second aspect.

Images