JP4958215B2 - Body structure at the front of the vehicle - Google Patents

Description

  The present invention relates to a vehicle body structure at a front portion of a vehicle in which an upper frame extends from a front pillar to the front side of the vehicle.

  The structure of the vehicle body is used to mitigate the impact of the collision and protect the occupant. These vehicle body structures have been devised so that they can be appropriately distributed in a portion where rigidity can be maintained without concentrating the load of a collision from the front. In particular, in order to be able to mitigate the impact of a part where no engine or tire is present when viewed from the front of the vehicle, it is possible to reduce the impact from members of the opponent vehicle (side frames, etc. having different opposing positions) regardless of the type of oncoming vehicle. It is possible to alleviate the impact.

  Under such circumstances, conventionally, in the vehicle body structure of the front part of the vehicle in which the upper frame extends from the front pillar to the front of the vehicle, there are various techniques for efficiently distributing the load from the front part of the upper frame at the time of collision. Proposed. For example, a technique has been proposed in which a load is distributed to the front pillar when a load is applied to the front end portion of the upper frame (see, for example, Patent Document 1). In other words, the upper frame is arranged linearly upward toward the rear of the vehicle body, and the load applied to the front end portion of the upper frame is distributed upward on the roof side.

  According to the conventional structure, the upper frame is inclined upward toward the rear of the vehicle body, so that the load input to the upper frame can be distributed to the roof side, and the space below the upper frame is secured. Thus, the degree of design freedom can be increased.

JP 2005-112173 A

  However, in the conventional vehicle body structure of the front portion of the vehicle as described in Patent Document 1, the load applied to the front end portion of the upper frame is distributed to the roof side. It is necessary to increase the thickness of the structure on the upper part of the vehicle body. The addition of the reinforcing member and the increase in the plate thickness lead to an increase in weight, and the weight on the upper side of the vehicle body increases. For this reason, the center of gravity of the vehicle body becomes high, the stability of the vehicle is impaired, and there is a possibility that the steering stability on a curve or the like is lowered.

  The present invention has been made in view of the above situation, and a vehicle body structure of a vehicle front portion that can actively guide a load applied to the front end portion of the upper frame to a member on the vehicle body lower side and efficiently distribute it to the rear of the vehicle. Therefore, it is an object of the present invention to achieve both a collision load absorption performance and an improvement in steering stability without increasing the weight on the upper side of the vehicle body.

According to a first aspect of the present invention for achieving the above object, a vehicle body structure of a vehicle front portion according to the present invention includes a pair of front pillars positioned on the left and right of a vehicle front portion of the vehicle and extending vertically, A pair of left and right upper frames formed by joining the base ends of the pillars and extending in front of the vehicle and curving downward on the front end side , and arranged below the upper frames and inside the vehicle pillar in the vehicle width direction A pair of left and right side members extending in front of the passenger compartment, and a front end cross member that connects the front end portions of the pair of side members, and the upper frame of the upper frame is disposed on the front end side of the side members. In the vehicle body structure of the front portion of the vehicle configured to be connected to the front end side, the side member and the upper frame are continuously connected from the front end portion of the upper frame. A connecting brace extending obliquely inward in the direction and extending downwardly inward in the vehicle width direction, joined to the front end surface of the side member and coupled to the front end cross member The upper frame has a virtual center of gravity line connecting the center of gravity in the longitudinal section of the vehicle width direction along the length direction of the upper frame. It is formed so as to be inclined downward.

In the present invention according to claim 1, the upper frame is formed such that a virtual center of gravity line connecting the center of gravity of the upper frame in the longitudinal section in the vehicle width direction is inclined downward toward the rear of the vehicle on the base end side of the upper frame. As a result, the load input to the front end of the upper frame due to a collision or the like is actively guided to the lower side of the front pillar via the connection brace, and is relatively stronger than the upper part of the vehicle, and due to an increase in weight of reinforcement etc. The load can be distributed to the vehicle lower side member (side sill or the like) having little adverse effect on the center of gravity of the vehicle body.
Further, it is possible to secure a large area received from the front of the vehicle by the connecting brace, and it is possible to efficiently prevent the mating structure from entering in an offset collision or the like.

  In order to achieve the above object, the vehicle body structure of the vehicle front portion of the present invention according to claim 2 is the vehicle body structure of the vehicle front portion of claim 1, wherein the base frame side of the upper frame is the shape of its lower edge portion. Is formed so as to bend downward toward the rear of the vehicle, and is joined so as to be continuous with the front edge portion of the front pillar.

  In the present invention according to claim 2, the load inputted to the front end of the upper frame is smoothly and efficiently guided to the lower side of the front pillar and reliably distributed to the lower side of the vehicle.

  According to a third aspect of the present invention, there is provided a vehicle body structure for a vehicle front portion according to the present invention. The vehicle body structure for a vehicle front portion according to the second aspect is such that the front pillar protrudes forward of the vehicle at a portion where the upper frame is joined. The upper end of the upper frame has a joining protrusion where the base end is superposed, and the lower part of the joining protrusion has a curved shape along the lower edge of the upper frame base end. It is formed.

  According to the third aspect of the present invention, the upper frame can be firmly joined, and the input load from the front end of the upper frame can be more efficiently received and reliably distributed to the lower side of the vehicle.

According to a fourth aspect of the present invention, there is provided a vehicle front body structure according to the present invention, wherein the front end of the upper frame is curved downward. The lower edge of the connecting brace, the lower edge of the upper frame, and the front edge of the front pillar are configured to have a continuous arch shape when viewed from the side of the vehicle. .

  In the present invention according to claim 4, it is possible to positively and efficiently receive the load input at the front portion of the vehicle and distributed to the upper frame side.

  According to a fifth aspect of the present invention, the vehicle body structure of the vehicle front portion according to the present invention is the vehicle body structure of the vehicle front portion according to any one of the first to fourth aspects, wherein an upper edge portion on the base end side of the upper frame. The shape is formed substantially horizontally.

  In this invention which concerns on Claim 5, the input load disperse | distributed to the upper side of a front pillar can be suppressed to the minimum, and a load can be more actively disperse | distributed to the pillar lower side.

  A vehicle body structure of a vehicle front portion according to a sixth aspect of the present invention is the vehicle body structure of a vehicle front portion according to any one of the first to fifth aspects, wherein the front pillar has a lower end portion at the front portion. A reinforcing member for connecting and reinforcing the pillar and the side member is provided.

  In the present invention according to claim 6, the bending moment generated on the lower side of the front pillar is canceled, and the input load guided to the lower end portion of the front pillar can be distributed not only to the side sill but also to the side member via the reinforcing member. it can.

  According to a seventh aspect of the present invention, the vehicle body structure of the vehicle front portion of the present invention is the vehicle body structure of the vehicle front portion according to any one of the first to sixth aspects, wherein the upper frame is inward in the vehicle width direction. The outer panel has a substantially hat-shaped outer panel that is opened, and an inner panel that is joined to the outer panel to form a closed section. The inner panel extends above the outer panel from the outer panel. An extended portion is formed, and an end portion of an upper bar that supports the front edge of the hood is joined to the extended portion.

  In the present invention according to claim 7, the extended portion of the upper frame supports the upper bar and can effectively absorb the impact load input to the upper bar due to a pedestrian's collision or the like. .

  The vehicle body structure of the front part of the vehicle according to the present invention can actively guide the load applied to the front end part of the upper frame to the member on the lower side of the vehicle body and efficiently distribute it to the rear of the vehicle, increasing the weight on the upper side of the vehicle body Therefore, it is possible to achieve both a collision load absorption performance and improved steering stability.

  1 is a perspective view showing a vehicle body structure of a vehicle front portion according to an embodiment of the present invention, FIG. 2 is a disassembled state of FIG. 1, FIG. 3 is a side view state of a vehicle front portion, and FIG. FIG. 5 shows a front view of the front of the vehicle, FIG. 5 shows an arrow AA in FIG. 3, FIG. 6 shows an arrow BB in FIG. 3, and FIG. 7 shows a CC line in FIG. As seen from the arrow, FIG. 8 shows a side view state representing a state of dispersion of collision energy at the time of a frontal collision.

  As shown in FIGS. 1 and 2, a pair of front pillars 3 extending in the vertical direction of the vehicle are provided on the left and right sides of the front portion of the vehicle compartment S of the vehicle. The base ends of a pair of left and right upper frames 6 extending forward are joined. The left and right front pillars 3 are connected to each other by a cowl top panel 9 extending in the vehicle width direction, and below the cowl top panel 9 is a dash panel that partitions the vehicle compartment S and a region in front of the vehicle compartment (food room). 10 is arranged. Cylindrical strut houses 16 that support the suspension device are provided on the left and right front sides of the dash panel 10 and are joined to the upper frame 6.

  In addition, a pair of left and right front floor side members (side members) 1 extending in the vehicle front-rear direction are disposed at positions on the inner side in the vehicle width direction from the front pillar 3 and below the upper frame 6, and the side members 1 extends from the lower side of the passenger compartment S along the dash panel 10 to the front of the vehicle. A front end portion of the upper frame 6 is connected to a front end portion of the side member 1 via a connection brace 7, and the front end portions of the side members 1 are connected to each other by a front end cross member 2.

  The area in front of the vehicle compartment (hood room) referred to here is an area of the front part of the vehicle covered with a plate-shaped hood, and in the case of a vehicle in which the engine is placed in the front part, generally the engine room. Refers to the part called.

  As shown in FIGS. 1 and 2, the front pillar 3 is inclined upward and rearward on the upper side of the vehicle and connected to a roof pillar (not shown), and the lower side is arranged in parallel with the side member 1 at the lower end and extends rearward of the vehicle. It is connected to the side sill 4. A reinforcing brace 8 (see FIG. 2) as a reinforcing member is provided between the front end of the side sill 4 (lower end of the front pillar 3) and the side member 1, and the side sill 4 and the side member 1 Are connected.

  The front pillar 3 includes a front pillar outer 3a, a front pillar inner 3b, a hinge ring hose (not shown), and the like, and the front pillar inner 3b is joined to the front pillar outer 3a to form a closed section (FIG. 5). reference).

  As shown in FIG. 3, a substantially central portion of the front pillar 3 projects to the front side of the vehicle, and the front pillar inner 3b projects further to the front side of the vehicle than the front pillar outer 3a to form a joint projecting portion 5. is doing. An upper frame 6 is joined to the joint protrusion 5.

  The upper frame 6 includes an upper frame outer 6a having a substantially hat-shaped longitudinal cross section that is opened inward in the vehicle width direction, and an upper frame inner 6b that is joined to the upper frame outer 6a to form a closed cross section. (See FIG. 6).

  Then, the upper and lower edge portions on the base end side of the upper frame outer 6a are joined to the joint projecting portion 5 of the front pillar inner 3b, and the joint surface of the base end is joined to the front pillar outer 3a. That is, as shown in FIG. 5, the upper frame 6 is joined to the front pillar 3 by superposing the base end of the upper frame outer 6a so as to cover the joining protrusion 5 of the front pillar inner 3b. The end portion of the upper frame inner 6b is joined to the front end of the joint projecting portion 5 of the front pillar inner 3b.

  As shown in FIG. 3, the base end side of the upper frame 6 is formed so as to bend downward as the shape of the lower edge portion goes toward the rear of the vehicle. Further, the lower edge portion of the joint projecting portion 5 continuing from the front edge portion of the front pillar 3 is formed in a curved shape along the curvature of the lower edge portion of the upper frame 6, and the upper frame 6 is connected to the front pillar 3. In the joined state, the lower edge portion of the upper frame 6 and the front edge portion of the front pillar 3 are configured to be continuous.

  Further, the upper edge portion of the upper frame 6 at the base end side has a substantially horizontal shape, and the base end side of the upper frame 6 has the center of gravity in the longitudinal section of the upper frame 6 in the vehicle width direction as the length of the upper frame 6. A virtual center of gravity line P connected in the vertical direction is formed so as to incline downward toward the rear of the vehicle. That is, the load transmitted to the upper frame 6 due to a collision or the like is guided to the lower side of the front pillar 3.

  On the other hand, the front end side of the upper frame 6 is formed to bend downward, and a connecting brace 7 connected to the front end portion of the side member 1 is joined to the front end portion. The lower edge of the connecting brace 7, the lower edge of the upper frame 6, and the front edge of the front pillar 3 are configured to have a continuous arch shape when viewed from the vehicle lateral direction.

  As shown in FIGS. 1 and 4, the connecting brace 7 is a side member 1 that continuously extends from the front end portion of the upper frame 6 obliquely inward in the vehicle width direction and is located in front of the vehicle from the front end portion of the upper frame 6. The connecting brace 7 is disposed so as to incline downward as it goes inward in the vehicle width direction when viewed from the front of the vehicle.

  As shown in FIG. 7, the connecting brace 7 is a member configured in a closed cross section by an outer panel 7 a and an inner panel 7 b, so that the inner panel 7 b of the connecting brace 7 covers the front surface of the front end portion of the side member 1. They are joined by welding. The front end cross member 2 is coupled to the front surface of the outer panel 7 a of the connecting brace 7.

  The front end cross member 2 is coupled to the connection brace 7 by bolts 15 (see FIG. 4), and connects the front ends of the pair of side members 1 to each other. The front end cross member 2 is also used as a bumper reinforcement / attachment.

  As shown in FIGS. 1 and 6, the upper frame inner 6 b of the upper frame 6 is formed with an extending portion 11 that extends upward from the upper frame outer 3 a. An end of an upper bar 12 that supports the front edge of the hood is joined to the extended portion 11, and the upper bar 12 is supported by the extended portion 11.

  The upper bar 12 is a structural member disposed in the vehicle width direction at the front portion of the hood room, and is provided with a hood lock member, a rubber member that suppresses metal buffering with the hood, and the like.

  A pair of radiator supports 13 for supporting a radiator or the like (not shown) is provided at the front portion of the food room across the upper bar 12 and the connecting brace 7. The radiator support 13 is a member that has an upper end connected to the upper bar 12 and a lower end connected to the connecting brace 7 and extends in the vehicle vertical direction, and is arranged so that the lower side extends outward in the vehicle width direction with respect to the upper side. When the pair of radiator supports 13 are viewed from the front of the vehicle, they are substantially C-shaped. A radiator mounted on the side member 1 is attached to the radiator support 13 integrally with a condenser of an air conditioner or a radiator fan via a frame member or the like. The radiator support 13 holds a device such as a lamp.

  On the other hand, a fender shield 14 is provided at a portion surrounded by the side member 1 in front of the strut house 16, the upper frame 6 and the connecting brace 7. The fender shield 14 is joined so that the rear end side of the vehicle is continuous with the strut house 16, and the other three sides are joined to the side member 1, the upper frame 6, and the connecting brace 7.

  In the vehicle body structure of the vehicle front portion of the present invention having the above-described configuration, as shown in FIGS. 1 to 3, the lower edge portion on the proximal end side of the upper frame 6 is curved downward toward the vehicle rear side, and the upper edge portion Because of the substantially horizontal shape, the load can be actively guided to the lower side of the front pillar 3, that is, the lower side of the vehicle by the upper frame 6. In other words, the longitudinal section of the upper frame 6 in the vehicle width direction is expanded downward as it goes to the base end side (vehicle rear side), and the center of gravity in the longitudinal section of the vehicle width direction is connected along the length direction of the upper frame 6. Since the virtual center of gravity line P is inclined downward toward the rear of the vehicle, the collision load is inevitably guided to the lower side of the vehicle.

  Furthermore, the shape of the lower edge portion of the joint protrusion 5 to which the base end of the upper frame 6 is joined is a curved shape along the curve of the lower edge portion on the base frame 6 side, and the upper frame 6 and the front pillar 3 , The load is smoothly transmitted from the upper frame 6 to the front pillar 3. Further, since the upper frame 6 is joined (polymerized) so that the base end side thereof covers the joining projection 5, the connection state between the upper frame 6 and the front pillar 3 is further strengthened. As a result, the load input to the front end of the upper frame 6 due to a vehicle collision or the like is smoothly and efficiently guided to the lower portion of the front pillar 3 and actively and reliably distributed to the lower side of the vehicle. The load distributed on the upper side of the can be minimized.

  Also, as shown in FIG. 3, the tip of the upper frame 6 is curved downward, and the connecting brace 7 is continuously connected to the front end thereof, so that the load distributed from the front of the vehicle can be reduced. It can be positively and efficiently received and transmitted to the front pillar 3 side.

  Furthermore, as shown in FIG. 4, the connecting brace 7 is arranged so as to incline downward in the vehicle width direction when viewed from the front of the vehicle, so that a large area received from the front of the vehicle by the connecting brace 7 can be secured. It is possible to efficiently prevent the entry of the opponent structure at the time of an offset collision, and in particular, in the case of a collision with the vehicle, the structure of the opponent vehicle to the passenger compartment side at the time of the collision regardless of the size and weight of the opponent vehicle. The entry of (side members, etc.) can be minimized.

  Moreover, since the fender shield 14 is joined to the part surrounded by the side member 1 in front of the strut house 16, the upper frame 6 and the connecting brace 7, deformation of the region surrounded by these four members can be suppressed. Accordingly, the upper frame 6 can be prevented from being bent in the middle of a vehicle collision, so that transmission of the load to the rear of the vehicle can be ensured and the impact can be absorbed efficiently.

  Furthermore, in addition to the above-described effects, in the vehicle body structure of the vehicle front portion of the present invention, an extension portion 11 extending upward from the upper frame 6 is formed, and the upper portion that supports the hood front portion on the extension portion 11 is formed. Since both ends of the bar 12 are joined to support the upper bar 12, excessive input to the upper bar 12 from above the front of the hood (for example, excessive input from the hood due to a pedestrian collision or the like) ), The extended portion 11 can be deformed to effectively absorb excessive input.

  Next, the state of dispersion of the collision load in the vehicle body structure at the front portion of the vehicle according to the present invention will be described with reference to FIG.

  As shown in FIG. 8, when a load F is input from the front due to a collision or the like, the load F is connected to the upper side via a connecting brace 7 connected to the front end of the side member 1 together with the side member 1 as shown by a thick arrow. Distributed to the frame 6 side. The load transmitted to the upper frame 6 is guided to the lower side of the front pillar 3, that is, the vehicle lower side along the curvature of the base end side of the distal upper frame 6, and is transmitted from the front pillar 3 to the side sill 4 at the lower part of the vehicle. The Further, the load directly input to the side member 1 is transmitted to the rear side of the side member 1.

  Thereby, most of the load F from the front is transmitted to the side member 1 and the side sill 4 at the rear of the vehicle. For this reason, the influence of the load F on the upper side and the roof side of the front pillar 3 can be suppressed to a minimum, the reinforcement on the upper side of the vehicle can be reduced, the weight of the upper part of the vehicle is suppressed, and the center of gravity is lowered. be able to.

  In other words, the upper frame 6 is formed so that the virtual center of gravity line connecting the center of gravity in the longitudinal section of the upper frame 6 in the vehicle width direction is inclined downward toward the rear of the vehicle on the base end side of the upper frame 6. A load input to the front end of the upper frame 6 due to a collision or the like is positively guided to the lower side of the front pillar 3, has a relatively higher strength than the upper part of the vehicle, and has little adverse effect on the center of gravity of the vehicle body due to an increase in weight such as reinforcement The load can be distributed to members on the vehicle lower side (such as the side sill 4).

  The load at the point O at which the load F transmitted from the upper frame 6 is input to the front pillar 3 is dispersed into a component a on the lower side, a component b on the rear side of the vehicle, and a component on the upper side. Among these components, the upward component is minimal as described above, and the load is mainly distributed to the downward component a and the vehicle rear component b.

  The component “a” downward of the load at the point O is transmitted to the side sill 4. The component b toward the vehicle rear side is a moment to bend the front pillar 3 around the lower end portion of the front pillar 3 connected to the side sill 4. This moment (load component b) is received by the reinforcing brace 8 by reinforcing the lower end of the pillar 3.

  As a result, a resistance moment M with respect to the component b of the load is generated in the reinforcing brace 8, and this resistance moment M is transmitted to the side sill 4. As a result, the component b of the load on the vehicle rear side is transmitted to the side sill 4. . Further, since the reinforcing brace 8 is connected to the side member 1, the load received by the reinforcing brace 8 can be distributed and transmitted to the side member 1.

  Therefore, most of the load F input from the front is transmitted to the side member 1 and the side sill 4 on the lower side of the front pillar 3, and the reinforcement on the upper side of the front pillar 3 can be reduced. Moreover, since the reinforcement brace 8 reinforces the vehicle lower side, the center of gravity is further lowered. For this reason, it becomes a low center of gravity, the roll of the vehicle body at the time of curve driving | running | working can be suppressed, and steering stability can be improved. Moreover, since the existing side sill 4 is used as a collision safety member, an increase in cost can be suppressed. Furthermore, since the reinforcing structure is completed on the lower side of the vehicle body, it can be easily applied to a plurality of vehicles sharing the platform.

  Therefore, the load applied to the front end portion of the upper frame 6 can be actively guided to the member on the lower side of the vehicle body and can be efficiently distributed to the rear of the vehicle, and the collision load can be absorbed without increasing the weight on the upper side of the vehicle body. It is possible to achieve both performance and improved handling stability.

  INDUSTRIAL APPLICABILITY The present invention can be used in the industrial field of a vehicle body structure of a vehicle front portion in which an upper frame extends from the front pillar to the vehicle front side.

It is a perspective view showing the vehicle body structure of the vehicle front part which concerns on the example of 1 embodiment of this invention. It is a disassembled perspective view of a vehicle front part (FIG. 1). It is a side view of a vehicle front part (Drawing 1). It is a front view of a vehicle front part (Drawing 1). FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. FIG. 4 is a cross-sectional view taken along line B-B in FIG. 3. It is CC sectional view taken on the line in FIG. It is a side view showing the dispersion | distribution state of the collision energy at the time of a frontal collision.

Explanation of symbols

1 Front floor side member (side member)
2 Front End Cross Member 3 Front Pillar 3a Front Pillar Outer 3b Front Pillar Inner 4 Side Sill 5 Joint Protrusion 6 Upper Frame 6a Upper Frame Outer 6b Upper Frame Inner 7 Connection Brace 8 Reinforcement Brace 9 Cowl Top Panel 10 Dash Panel 11 Extension 12 Upper bar 13 Radiator support 14 Fender shield 15 Bolt 16 Struthouse

Claims (7)

A pair of front pillars that are located on the left and right of the front part of the vehicle compartment and extend in the vertical direction, and the base ends are joined to the front pillars to extend forward of the vehicle and the front end side is curved downward A pair of left and right upper frames, a pair of left and right side members disposed below the upper frame and inward of the front pillar and extending in front of the vehicle compartment, A front end cross member for connecting the front end portions of the members, and a vehicle body structure for a front portion of the vehicle configured to connect the front end side of the upper frame to the front end side of the side member.
The side members and the upper frame are continuously extended from the front end portion of the upper frame obliquely forward inward in the vehicle width direction, and extended so as to be positioned downward toward the inner side in the vehicle width direction. It is connected via a connecting brace joined to the front end surface of the side member and connected to the front end cross member,
The upper frame has a virtual center of gravity line connecting the center of gravity in the longitudinal section of the vehicle width direction along the length direction of the upper frame so as to incline downward toward the rear of the vehicle on the base end side of the upper frame. A vehicle body structure at the front of the vehicle characterized by being formed. In the vehicle body structure of the vehicle front part according to claim 1,
The vehicle is characterized in that a base end side of the upper frame is formed such that a shape of a lower edge thereof is curved downward toward the rear of the vehicle, and is joined so as to be continuous with a front edge of the front pillar. Front body structure. In the vehicle body structure of the vehicle front part according to claim 2,
The front pillar has a joint protrusion that protrudes toward the front of the vehicle at a portion to which the upper frame is joined, and a base end of the upper frame is superposed.
The vehicle body structure of the front portion of the vehicle, wherein the joint protrusion is formed such that a lower shape thereof is curved along a curvature of a lower edge portion on the upper frame base end side. In the vehicle body structure of the vehicle front part as described in any one of Claims 1-3,
The front end of the upper frame is curved downward, and the lower edge of the brace, the lower edge of the upper frame, and the front edge of the front pillar form an arch shape that is continuous when viewed from the lateral direction of the vehicle. The vehicle body structure of the front part of the vehicle is characterized by being configured as follows. In the vehicle body structure of the vehicle front part as described in any one of Claims 1-4,
The vehicle body structure of the vehicle front part characterized by the shape of the upper edge part of the base end side of the said upper frame being substantially horizontal. In the vehicle body structure of the vehicle front part according to any one of claims 1 to 5,
A vehicle body structure for a front portion of a vehicle, wherein a reinforcing member for connecting and reinforcing the front pillar and the side member is provided at a lower end portion of the front pillar. In the vehicle body structure of the vehicle front part according to any one of claims 1 to 6,
The upper frame is configured by a substantially hat-shaped outer panel that is opened inward in the vehicle width direction, and an inner panel that is joined to the outer panel to form a closed section. An extended portion extending upward of the vehicle from the outer panel is formed, and an end portion of an upper bar that supports the front edge of the hood is joined to the extended portion. Body structure.

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