WO2018230204A1

WO2018230204A1 - Vehicle-body front structure

Info

Publication number: WO2018230204A1
Application number: PCT/JP2018/018059
Authority: WO
Inventors: 聖彦松岡; 輝芳賀
Original assignee: 本田技研工業株式会社
Priority date: 2017-06-14
Filing date: 2018-05-10
Publication date: 2018-12-20
Also published as: CN110719870A; CN110719870B

Abstract

The purpose of the present invention is to increase the freedom of layout for a front obstacle detection sensor and peripheral components thereof. A ground-contact guard (20) has an upper wall (20a), a front wall (20b), and a lower wall (20c) longer than the upper wall (20a) along the front-to-back direction of a vehicle. A lower cross member (28) exhibits a hat-type cross-section that opens upward, has at least a front-side flange section (29a) and a bottom section (29c), and affixes the upper wall (20a) to the front-side flange section (29a) of the lower cross member (28) while also affixing the lower wall (20c) to the bottom section (29c). To the front wall (20b) is attached a front obstacle detection sensor (34). The ground-contact guard (20) is further provided with a stepped flange part (38) having a step part (36) continuing at least from the front wall (20b) to the lower wall (20c).

Description

Body front structure

The present invention relates to a front body structure of a vehicle such as an automobile.

For example, Patent Document 1 discloses that a lower tank of a radiator is protected by a front under cover joined to a lower surface of a cross member at the front of a vehicle body.

In addition, as a vehicle body front structure, the vehicle includes a pair of left and right front side frames extending in the vehicle front-rear direction, and a front bulkhead fixed to the front end portions of the pair of left and right front side frames. (See, for example, Patent Document 2).

This Patent Document 2 describes that a front side frame and a front bulkhead are temporarily fixed using a dedicated jig. The jig disclosed in Patent Document 2 includes a positioning jig that includes a jig support hole and is laid between the left and right front side frames, and a bulkhead jig that includes a rod extending in the front-rear direction and connected to the front bulkhead. ing. According to the jig disclosed in Patent Literature 2, the front bulkhead can be temporarily fixed to the front side frame together with the bulkhead jig by inserting the connecting rod through the jig support hole from the front.

Patent Documents 3 and 4 do not intend to temporarily fix the front side frame and the front bulkhead, but describe that the two vehicle body members are temporarily fixed using claws. That is, Patent Document 3 describes a structure in which one claw provided on a bracket is hooked from above on an edge of a hole provided in a roof reinforcement. Patent Document 4 describes a structure in which a claw provided on a damper is hooked on the edge of an opening provided on a gusset from above.

Further, as a cooling device mounting structure for an automobile, a structure having a radiator mounting bracket attached to a connecting portion between a horizontal member and a vertical member arranged at the front of a vehicle body is known (see, for example, Patent Document 5). ). Specifically, this cooling device mounting structure is connected to the front cross member (lateral member) extending in the vehicle width direction at the front of the vehicle body and to the outer end portion of the front cross member in the vehicle width direction. And a connecting member (vertical member) that connects the front cross member and the front side frame by being connected to the front end portion of the front side frame (body frame).

The radiator mounting bracket is configured to support the lower portion of the radiator (cooling device) with an extending portion extending forward from a base end portion attached to the inner corner formed by the front cross member and the connecting member.

Further, the connecting member has a closed cross-sectional structure, and a reinforcing member made of a plate that is long in the vertical direction is arranged inside the connecting member. This reinforcing member is bent at the center extending in the vertical direction. The upper end portion of the reinforcing member is connected to the lower surface of the front side frame, the central portion is connected to the inner wall surface of the reinforcing member, and the lower end portion is connected to the upper surface of the front cross member.

JP 2001-278126 A International Publication No. 2016/117252 JP 2001-213351 A Japanese Patent No. 4005548 Japanese Utility Model Publication No. 3-16579

By the way, in recent years, automatic driving technology has been widely applied to automobiles, and there is a need to dispose a front obstacle detection sensor that detects an obstacle in front of the vehicle in front of the lower cross member of the front bulkhead. It is growing.

In addition, the temporary fixing structure disclosed in Patent Document 2 has a problem that the assembly workability is poor because the attachment work of the jig to each member and the attachment work of the jigs are necessary.

In the temporary fixing structure disclosed in Patent Document 3, one claw provided on the bracket is hooked from above on the edge of the hole provided in the roof reinforcement, and the claw is offset to one side from the center in the vehicle width direction of the bracket. Are arranged. For this reason, in the temporary fix | stop structure disclosed by patent document 3, it is necessary to work while hold | suppressing with a hand so that a bracket may not fall, and there exists a problem that an assembly workability | operativity is bad.

In the temporary fixing structure disclosed in Patent Document 4, since the plate thickness direction of the nail provided in the damper matches the vertical direction, and the nail supports the load (self-weight) in the plate thickness direction, the nail may be deformed. is there.

Furthermore, the reinforcing member of the conventional cooling device mounting structure (for example, see Patent Document 5) is joined only to the upper surface of the front cross member (lateral member). Therefore, the conventional cooling device mounting structure has insufficient bonding strength at the corners formed by the front cross member and the connecting member (vertical member). Therefore, for example, when the automobile travels on a rough road, the front side frame tip portion is displaced up and down, which may cause torsional deformation at the corner portion. When the corner portion undergoes torsional deformation, the support stability of the radiator of the radiator mounting bracket attached to the inner corner side of the front cross member and the connecting member is hindered.

A general object of the present invention is to provide a vehicle body front structure that can improve the degree of freedom in layout of a front obstacle detection sensor and its peripheral components.

The main object of the present invention is to provide a vehicle body front structure that can improve the assembly workability at the time of temporary fixing and can prevent the front bulkhead from falling off.

Another object of the present invention is that the corner member between the horizontal member and the vertical member where the bracket is disposed has excellent coupling strength, the rigidity of the corner member is increased, and the vertical vibration of the cooling device is transmitted to the passenger compartment side. An object of the present invention is to provide a vehicle body front part structure that is shut off and excellent in support stability of a cooling device.

In order to achieve the above object, the present invention provides a ground guard mounting structure attached to a lower cross member of a front bulkhead, wherein the ground guard includes an upper wall, a front wall, and a vehicle longitudinal direction. A lower wall that is longer than the upper wall, the upper wall and the lower wall extending in parallel to face each other, and the front wall is substantially the same as the upper wall and the lower wall. The lower cross member is perpendicular to each other and connects the vehicle front end of the upper wall and the vehicle front end of the lower wall. The upper wall is fixed to the front flange portion of the lower cross member, and the lower wall is fixed to the bottom surface portion. A front obstacle detection sensor is provided on the front wall. It is attached.

In the present invention, it is possible to obtain a vehicle body front structure capable of improving the degree of freedom in layout of the front obstacle detection sensor and its peripheral parts.

Further, according to the present invention, it is possible to obtain a vehicle body front structure that can improve the assembly workability at the time of temporary fixing and can suppress the dropout of the front bulkhead.

Furthermore, the present invention provides excellent coupling strength at the corners between the horizontal member and the vertical member where the brackets are disposed, and also increases the rigidity of the corners to prevent the vertical vibrations of the cooling device from being transmitted to the passenger compartment. And the vehicle body front part structure which is excellent in the support stability of a cooling device can be obtained.

1 is a schematic configuration perspective view showing a vehicle body front portion of a vehicle to which a vehicle body front structure according to a first embodiment of the present invention is applied. It is a partial expansion perspective view which shows the state in which the front obstacle detection sensor was attached via the grounding guard shown in FIG. (A) is a perspective view of the grounding guard as viewed obliquely from above, (b) is a perspective view of the grounding guard as viewed from diagonally behind, and (c) is a downward view of the state where the grounding guard is attached to the lower cross member. It is the perspective view seen from the side. It is the bottom view which looked at the state where the grounding guard was attached to the lower cross member from the lower part. FIG. 3 is a schematic end view showing a bumper face and an under cover disposed below the front portion of the vehicle body. It is explanatory drawing which shows the state in which the bumper face or under cover arrange | positioned under the vehicle body front part grounded on the road surface, and the upward load was input. It is a schematic end view which shows the state which attached the cover member which coat | covers a recessed part in a state without a front obstacle detection sensor. It is a schematic structure perspective view which shows the vehicle body front part of the vehicle to which the vehicle body front part structure which concerns on 2nd Embodiment of this invention was applied. FIG. 9 is a partial cross-sectional perspective view showing the bumper beam extension shown in FIG. 8 and its periphery. FIG. 9 is a sectional view taken along line XX in FIG. 8. It is a perspective view which shows the left vertical member of a front bulkhead. It is a perspective view which shows the rear side member of a vertical member. (A) is a perspective view showing a first hook piece, (b) is a cross-sectional view taken along line XIIIb-XIIIb of (a). (A) is a perspective view showing a second hook piece, (b) is a sectional view taken along line XIVb-XIVb of (a). (A) is a perspective view for demonstrating the assembly procedure of a vehicle body front part structure, Comprising: The state which temporarily fixed the body and the front bulkhead is shown. (B) is sectional drawing which shows typically the position of the bolt hole of each member in the assembly procedure shown to (a). (A) is a perspective view for demonstrating the assembly procedure of a vehicle body front part structure, Comprising: The state which temporarily fixed the front bulkhead and the bumper beam assembly is shown. (B) is sectional drawing which shows typically the position of the bolt hole of each member in the assembly procedure shown to (a). (A) is a perspective view for demonstrating the assembly procedure of a vehicle body front part structure, Comprising: The state which temporarily fixed the body, the front bulkhead, and the bumper beam assembly is shown. (B) is sectional drawing which shows typically the position of the bolt hole of each member in the assembly procedure shown to (a). (A) is a perspective view for demonstrating the assembly procedure of a vehicle body front part structure, Comprising: The state which lifted the front bulkhead and the bumper beam assembly with respect to the body is shown. (B) is sectional drawing which shows typically the position of the bolt hole of each member in the assembly procedure shown to (a). (A) is a perspective view for demonstrating the assembly procedure of a vehicle body front part structure, Comprising: The state which raised the bumper beam assembly with respect to the body and the front bulkhead is shown. (B) is sectional drawing which shows typically the position of the bolt hole of each member in the assembly procedure shown to (a). FIG. 10 is a partial virtual configuration perspective view showing a vehicle body front portion of a vehicle to which a vehicle body front structure according to a third embodiment of the present invention is applied. It is a partial expansion perspective view of the arrow XXI part shown in FIG. It is a partial expansion perspective view which shows the left half of the front bulkhead of FIG. (A) is a partial expansion perspective view of a horizontal member including a vertical cross section along the vehicle front-rear direction, and (b) is a partial enlarged perspective view including a cross section at a joint portion between the horizontal member and the vertical member. It is a perspective view which shows the rear side member which comprises a vertical member. It is a whole perspective view of the reinforcing member which comprises a vertical member. (A) is a perspective view showing a state in which the bracket is looked down from the upper left rear diagonally, (b) is a perspective view showing a state in which the bracket is looked up from the lower right front, and (c) is an XXVIC of (a). FIG. 6 is a cross-sectional view taken along the line -XXVIC. FIG. 23 is a partially enlarged perspective view showing a coupling mode between the bracket and the front bulkhead as seen from the direction of arrow XXVII in FIG. 22.

Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
In each figure, “front and rear” indicates the vehicle longitudinal direction, “left and right” indicates the vehicle width direction (left and right direction), and “up and down” indicates the vertical vertical direction.

The vehicle to which the vehicle body front structure according to the first embodiment of the present invention is applied has a vehicle body made of a monocoque body. The vehicle body is arranged symmetrically with respect to a center line (not shown) that extends along the vehicle longitudinal direction through the center in the vehicle width direction of the vehicle.

As shown in FIG. 1, the vehicle body front portion 10 includes a pair of left and right front side frames 12 and 12, a pair of left and right

upper members

14 and 14, a pair of left and right connecting

members

16 and 16, and a front bulkhead 18. It is prepared for. A pair of

ground guards

20, 20 are attached at substantially the center of the lower end of the front bulkhead 18. The pair of

ground guards

20 and 20 are configured identically.

As shown in FIG. 1, the pair of left and right front side frames 12 and 12 are disposed on both the left and right sides along the vehicle width direction and extend along the vehicle front-rear direction. In addition, the vehicle rear end part of each front side frame 12 is connected to a cross member (not shown).

The pair of left and right

upper members

14, 14 are respectively arranged on the outer sides in the vehicle width direction of the pair of left and right front side frames 12, 12, and extend along the vehicle front-rear direction. The vehicle rear end of each upper member 14 is connected to a pair of left and right front pillars (not shown).

Each upper member 14 includes an upper member upper portion 14a and an upper member lower portion (a front end portion on the vehicle front side) 14b. The upper member upper portion 14a extends from an unillustrated front pillar with a downward slope toward the front of the vehicle. The upper member lower portion 14b extends along the vertical direction from the upper member upper portion 14a toward the vehicle lower side with a downward slope.

As shown in FIG. 1, the front bulkhead 18 is arranged at the front end of the vehicle. The front bulkhead 18 includes a pair of left and right

vertical members

24, 24, an upper cross member 26, and a lower cross member 28. The pair of left and right

vertical members

24, 24 are disposed substantially parallel to each other in the vicinity of the front end portions of the pair of left and right front side frames 12, 12, along the vertical vertical direction.

The upper cross member 26 is bridged between the upper end portions of the pair of left and right

vertical members

24, 24 along the vehicle width direction. Connecting

members

27, 27 that connect the both ends of each upper cross member 26 in the vehicle width direction and each upper member 14 (upper member upper portion 14 a) are connected to both ends of the upper cross member 26 along the vehicle width direction.

The lower cross member 28 has a hat cross-sectional shape that opens upward. As shown in FIG. 2, the lower cross member 28 includes a front flange portion 29a, a front side wall 29b, a bottom surface portion 29c, a rear side wall 29d, and a rear flange portion 29e.

The front flange portion 29a protrudes toward the front of the vehicle and extends along the vehicle width direction. The front side wall 29b is formed continuously with the front flange portion 29a and bent downward. The bottom surface portion 29c connects the lower end of the front side wall 29b and the lower end of the rear side wall 29d facing each other. The rear side wall 29d is disposed to face the front side wall 29b and is formed to rise upward from the vehicle rear end portion of the bottom surface portion 29c. The rear flange portion 29e is formed to bend from the upper edge portion of the rear side wall 29d toward the rear of the vehicle.

The lower cross member 28 is bridged along the vehicle width direction between the lower ends of the pair of left and right

vertical members

24, 24. The lower cross member 28 is positioned substantially below the upper cross member 26 in the vertical vertical direction.

As will be described later, the upper wall 20a of the ground guard 20 is fixed to the front flange portion 29a of the lower cross member 28, and the lower wall of the ground guard 20 to the bottom surface portion 29c of the lower cross member 28. 20c is fixed (see FIG. 3C).

As shown in FIG. 1, each connecting member 16 has a substantially rectangular shape when viewed from the front, and extends in the vehicle width direction between the lower end portion of the upper member 14 (upper member lower portion 14 b) and each front side frame 12. Has been placed. Each connecting member 16 connects the pair of left and right

upper members

14, 14 and the pair of left and right front side frames 12, 12 to each other along the vehicle width direction.

As shown in FIGS. 3A and 3B, the grounding guard 20 includes an upper wall 20a, a front wall 20b, and a lower wall 20c. The upper wall 20a and the lower wall 20c extend in parallel to face each other. The front wall 20b is substantially orthogonal to the upper wall 20a and the lower wall 20c, and connects the vehicle front end portion of the upper wall 20a and the vehicle front end portion of the lower wall 20c, respectively. In the first embodiment, the upper wall 20a, the front wall 20b, and the lower wall 20c are integrally configured by, for example, bending, but are not limited thereto, and are separately provided. It may be manufactured and integrally coupled. The ground guard 20 is not limited to the shape shown in FIGS. 3A and 3B. For example, the front wall 20b is curved in an arc shape toward the front of the vehicle and has a U-shaped cross section. You may make it exhibit a shape.

The front wall 20b has a substantially rectangular shape when viewed from the front (see FIG. 3A), and a cross section along the vehicle width direction in the attached state is formed in a substantially hat shape. The front wall 20b is provided so as to face toward the front of the vehicle (see FIG. 1), and connects the front ends of the upper wall 20a and the lower wall 20c to each other. A mounting hole 30 penetrating the front and back surfaces of the front wall 20b is formed at a substantially central portion of the front wall 20b.

A mounting nut 32 (see FIG. 3B) is connected (joined) to the vehicle rear surface (back surface) of the front wall 20b close to the mounting hole 30. When the threaded portion of the bolt 33 (see FIG. 2) inserted through the mounting hole 30 of the front wall 20b is fastened to the mounting nut 32, the front obstacle detection sensor 34 described later with respect to the ground guard 20 is It is attached.

The upper wall 20a has a substantially triangular shape in plan view. The cross section in the vehicle width direction of the upper wall 20a in the attached state is formed in a substantially hat shape in which the central portion bulges upward as compared to the corners on both sides.

The lower wall 20c has a vertically long rectangular shape toward the rear of the vehicle in plan view. The dimension of the lower wall 20c in the vehicle front-rear direction is longer than the dimension of the upper wall 20a in the vehicle front-rear direction. The upper wall 20a and the lower wall 20c extend in substantially parallel to each other in the vertical direction. The upper wall 20a and the lower wall 20c extend from the front wall 20b toward the rear of the vehicle while being spaced apart by a predetermined distance in the vertical direction.

As shown in FIGS. 3 (a) and 3 (b), it is intermediate from the vehicle front end on both sides of the front wall 20b along the vehicle width direction and both sides of the lower wall 20c in the vehicle width direction. Up to the site, a linear step 36 having a step between the inner side and the outer side is continuously formed. Step flange portions 38 are continuously formed by the step portions 36 on both side portions of the front wall 20b along the vehicle width direction and on both front side portions of the lower wall 20c. The step flange portion 38 is formed so as to be continuous with at least the front wall 20b and the lower wall 20c, but a step portion 36 (not shown) is also formed on the upper wall 20a, and the upper wall 20a, the front wall 20b, and Alternatively, the step flange portion 38 may be formed continuously on the lower wall 20c.

On the vehicle front side of the lower wall 20c, a circular access hole 40 penetrating the lower wall 20c along the vertical direction is formed. This access hole 40 allows a gun tip portion of a welding gun (not shown) to be inserted from the lower wall 20c side (to be accessible) in order to form a vehicle body joint portion 42 (see FIG. 4) on the upper wall 20a side. To do).

The ground guard 20 includes a vehicle body joint 42. The vehicle body joint portion 42 fixes the front obstacle detection sensor 34 to the center portion of the vehicle body front portion 10 in the vehicle width direction. As shown in FIG. 4, the vehicle body joint portion 42 includes an upper wall side vehicle body joint portion 42a and a lower wall side vehicle body joint portion 42b. The upper wall side vehicle body joint portion 42 a fixes (joins) the vehicle rear side upper surface of the upper wall 20 a to the front flange portion 29 a of the lower cross member 28. The lower wall side vehicle body joint portion 42 b fixes (joins) the vehicle rear side upper surface of the lower wall 20 c to the bottom surface portion 29 c of the lower cross member 28.

As shown in FIGS. 3A and 3B, an escape portion 44 for discharging the electrodeposition coating liquid is formed on the joint surface between the lower cross member 28 and the ground guard 20. The escape portion 44 includes an upper wall side escape portion 44a formed on the upper wall 20a of the grounding guard 20 and a lower wall side escape portion 44b formed on the lower wall 20c.

The upper wall side relief portion 44a is formed by a step portion formed between the central portion of the upper wall 20a and the corner portions on both sides with the central portion therebetween. The lower wall side escape portion 44b is formed by a linear long groove that is recessed downward from the upper surface of the lower wall 20c. The long groove continuously extends linearly from an intermediate portion of the lower wall 20c in front of the vehicle to the vehicle rear end.

As shown in FIG. 2, the front obstacle detection sensor 34 has a casing 50 formed of a rectangular casing. The casing 50 is positioned above the lower cross member 28 in the vertical direction, and is disposed at the center of the lower cross member 28 in the vehicle width direction. The upper part of the front obstacle detection sensor 34 is fixed to a pair of left and right

vertical members

24, 24 via a first stay 46 extending in the vehicle width direction. The lower part of the front obstacle detection sensor 34 is fixed to the ground guard 20 via a second stay 48 extending in the vehicle front-rear direction. In this case, the ground guard 20 also has a function as a bracket for attaching the front obstacle detection sensor 34 to the lower cross member 28.

As shown in FIG. 5, a guide member 52 is disposed in front of the front bulkhead 18 in the vehicle. The guide member 52 is formed with a recess 56 into which a second stay 48 that extends in the vehicle front-rear direction by recessing the guide surface 54 is fitted.

As shown in FIG. 5, a bumper face 62 on the front side of the vehicle and an under cover 64 on the rear side of the vehicle are disposed below the front part 10 of the vehicle body. A cooling pipe 66 is arranged between the ground guard 20 and the front obstacle detection sensor 34 along the vertical direction. The cooling pipe 66 functions as a peripheral part of the front obstacle detection sensor 34.

As shown in FIG. 1, a pair of left and right damper housings 58 for storing dampers (not shown) are provided above the rear end portions of the front side frames 12 in the vehicle. A pair of left and right damper bases 60 and 60 that support a damper (not shown) are provided on the upper portion of each damper housing 58.

The damper housing 58 is disposed between each upper member 14 and each front side frame 12 along the vehicle width direction. The damper housing 58 is fixed to the inner side wall of the upper member 14 and the outer side wall of the front side frame 12 via a plurality of side flange portions (not shown).

The vehicle body front portion 10 to which the ground guard mounting structure, which is the vehicle body front structure according to the first embodiment, is basically configured as described above. Next, the function and effect will be described.

In the first embodiment, the grounding guard 20 is disposed before the upper wall 20a and the lower wall 20c are connected to each other, and the upper wall 20a and the lower wall 20c facing each other in parallel with each other. By forming with the wall 20b (refer FIG. 3 (a), FIG.3 (b)), the rigidity and intensity | strength of the grounding guard 20 can be improved. The ground guard 20 may have a U-shaped cross section. Thus, in the first embodiment, even if the front obstacle detection sensor 34 vibrates up and down, the ground guard 20 functioning as a bracket has high rigidity and strength, so that the vertical vibration is transmitted to the lower cross member 28. Can be suppressed. As a result, in the first embodiment, the quietness in the passenger compartment can be improved.

In addition, for example, the bumper face 62 or the under cover 64 disposed below the vehicle body front portion 10 contacts the road surface 68 (see FIG. 6) and a push-up load is input, so that the bumper face 62 and / or the under cover 64 is upward. May be deformed toward. In this case, in the first embodiment, as shown in FIG. 6, upward displacement of the under cover 64 and the bumper face 62 is restricted by the ground guard 20 having high rigidity and strength. For this reason, it is possible to suppress interference between the deformed bumper face 62 and / or the under cover 64 and components (for example, the cooling pipe 66, the front obstacle detection sensor 34, etc.) disposed above the ground guard 20. Can do. As a result, in the first embodiment, the degree of freedom in layout of the front obstacle detection sensor 34 and its peripheral components can be improved.

Further, in the first embodiment, the grounding guard 20 includes a step flange portion 38 in which a step portion 36 that is continuous from at least the front wall 20b to the lower wall 20c is formed (FIGS. 3A and 3B). )reference). Thereby, in 1st Embodiment, rigidity and intensity | strength can be improved further by the level | step-difference flange part 38. FIG.

Further, in the first embodiment, the electrodeposition coating liquid is applied to the joint surface between the upper wall 20a and the front flange portion 29a of the ground guard 20 and the joint surface between the lower wall 20c and the bottom surface portion 29c of the ground guard 20, respectively. An upper wall-side escape portion 44a and a lower wall-side escape portion 44b are formed (see FIGS. 3 (a) and 3 (b)). Since the electrodeposition coating liquid can be smoothly discharged from the joint surface to the outside by the upper wall side relief portion 44a and the lower wall side relief portion 44b, the occurrence of rust can be suppressed and the rust prevention effect can be obtained.

Furthermore, in the first embodiment, the grounding guard 20 includes the vehicle body joint portion 42 so that the front obstacle detection sensor 34 is positioned at the center in the vehicle width direction. The vehicle body joint portion 42 includes an upper wall side vehicle body joint portion 42a and a lower wall side vehicle body joint portion 42b (see FIG. 4). In the first embodiment, the vehicle body joint portion 42 can suppress the vertical vibration of the front obstacle detection sensor 34 and prevent the detection accuracy from being lowered.

Furthermore, in the first embodiment, an access hole 40 for a welding gun for forming the vehicle body joint portion 42 with respect to the upper wall 20a is formed in the lower wall 20c of the ground guard 20 (FIG. 3A). FIG. 3B). As a result, in the first embodiment, in a state where the ground guard 20 is set on the lower cross member 28, welding work can be easily performed from the lower side, and the ground guard 20 can be easily attached to the lower cross member 28. It can be fixed (joined) to.

Furthermore, in the first embodiment, the front obstacle detection sensor 34 is arranged at the center in the vehicle width direction, and the upper part of the front obstacle detection sensor 34 is connected to the pair of left and right

vertical members

24, 24 via the first stay 46. In addition to fixing, the lower part of the front obstacle detection sensor 34 is fixed to the ground guard 20 via the second stay 48. Thereby, in 1st Embodiment, by adjusting the attachment position (for example, vertical position) of the front obstacle detection sensor 34 attached to the front bulkhead 18, with respect to the air inflow to radiator RA (refer FIG. 5). The front obstacle detection sensor 34 can be arranged at a position where there is no obstacle. Moreover, this can suppress the vertical vibration of the front obstacle detection sensor 34, and can suppress the fall of detection accuracy.

Furthermore, in the first embodiment, the guide member 52 is disposed at the front vehicle position of the front bulkhead 18, and the guide surface 54 of the guide member 52 is depressed downward to support the front obstacle detection sensor 34. Is formed (see FIG. 5). Thereby, in 1st Embodiment, the front obstruction detection sensor 34 can be arrange | positioned ahead of radiator RA, without preventing the flow of the air flow which cools radiator RA. As a result, in the first embodiment, the degree of freedom in layout of the front obstacle detection sensor 34 and its peripheral components can be further improved.

For example, when the front obstacle detection sensor 34 without the front obstacle detection sensor 34 is not used, as shown in FIG. 7, the lid member 70 that covers the recess 56 and has the guide surface 54 is formed. Can be arranged. The lid member 70 includes a front wall 70b extending forward from the middle bent portion 70a, a rear wall 70c extending rearward from the bent portion 70a, and a guide member 52 below the rear end of the rear wall 70c. The rear side wall 70d falls toward the rear side. As a result, in the first embodiment, the concave portion 56 is covered with the lid member 70 so that it is difficult to visually recognize, the appearance of the vehicle body front portion 10 is improved, and the flow of airflow is improved more smoothly along the guide surface 54. Can be made.

Next, a vehicle to which the vehicle body front structure according to the second embodiment of the present invention is applied will be described in detail below.

As shown in FIG. 8, the vehicle body front portion 101 of the vehicle includes a pair of left and right front side frames 102 and 102, a pair of left and right

subframe support portions

103 and 103, a pair of left and right front and

rear frames

104 and 104, and a bumper beam. An assembly 105 and a front bulkhead 106 are provided.

The front side frame 102 is a metal structural member extending in the vehicle front-rear direction. The front side frame 102 is formed in a hollow structure having a closed cross section.

Connection plates

107 and 107 are fixed to front end portions of the pair of left and right front side frames 102 and 102, respectively. As shown in FIG. 9, the connecting plate 107 is a metal plate-like member that connects the front side frame 102, the bumper beam assembly 105, and the front bulkhead 106 to each other, and extends in the vertical direction and the vehicle width direction. Exist. A bent flange portion 107 a bent rearward is formed on the upper edge of the connecting plate 107.

As shown in FIG. 8, the sub-frame support portion 103 is a metal member that extends downward from the front portion of the front side frame 102. The front end portion of the subframe support portion 103 is attached to the lower portion of the front bulkhead 106 with bolts.

The front / rear frame 104 is a frame that constitutes a part of the front subframe, and is a metal structural member that extends in the vehicle front-rear direction. The front and rear frames 104 are disposed below the front side frame 102. The front end portions of the front and rear frames 104 are fixed to the lower end portions of the subframe support portions 103 with bolts.

The bumper beam assembly 105 is a metal member that extends in the vehicle width direction and is installed between the front end portions of the pair of left and right front side frames 102 and 102. The bumper beam assembly 105 includes a pair of left and right

bumper beam extensions

105A and 105A, a pair of left and right mounting

plates

105B and 105B, and a bumper beam 105C.

The bumper beam extension 105A is a member attached to the front end portion of the front side frame 102 via the attachment plate 105B. The bumper beam extension 105 A has a rectangular cylindrical hollow structure that opens forward and backward, and is configured to be more fragile than the bumper beam 105 C and the front side frame 102 depending on selection of material, thickness, and the like. At the time of a frontal collision of the vehicle, the bumper beam extension 105A absorbs an impact by being crushed in the vehicle front-rear direction by a frontal collision load.

As shown in FIG. 9, the mounting plate 105B is a plate-like member fixed to the rear end portion of the bumper beam extension 105A. The mounting plate 105B extends in the vertical direction and the vehicle width direction. The mounting plate 105B has an opening 105Ba and a pair of upper and lower fitting ribs 105Bb and 105Bb.

As shown in FIG. 10, the opening 105Ba is opened facing the inside of the bumper beam extension 105A. The opening dimension La in the height direction of the opening 105Ba is formed smaller than the opening dimension Lb in the height direction of the bumper beam extension 105A (La <Lb). The upper edge 105Bc of the opening 105Ba protrudes below the upper wall 105Aa of the bumper beam extension 105A, and is located at a position overlapping the inside of the bumper beam extension 105A in the vehicle front-rear direction. The lower edge 105Bd of the opening 105Ba protrudes above the lower wall 105Ab of the bumper beam extension 105A, and is located at a position overlapping the inside of the bumper beam extension 105A in the vehicle longitudinal direction.

The pair of upper and lower fitting ribs 105Bb protrude forward in the upper and lower sides of the opening 105Ba, and are portions where the rear end portion of the bumper beam extension 105A is fitted. The fitting ribs 105Bb and 105Bb both have a plate shape and extend in the vehicle front-rear direction and the vehicle width direction. The upper fitting rib 105Bb is spaced upward with respect to the opening 105Ba and is in contact with the outer surface of the upper wall 105Aa of the bumper beam extension 105A. The upper fitting rib 105Bb and the upper edge 105Bc of the opening 105Ba have an L-shaped cross section. The lower fitting rib 105Bb is spaced downward with respect to the opening 105Ba and is in contact with the outer surface of the lower wall 105Ab of the bumper beam extension 105A. The lower fitting rib 105Bb and the lower edge 105Bd of the opening 105Ba have an L-shaped cross section.

As shown in FIG. 8, the bumper beam 105C is a member constructed between the front end portions of the pair of left and right

bumper beam extensions

105A and 105A at the same height as the front end portions of the pair of left and right front side frames 102 and 102. .

The front bulkhead 106 is a metal structural member that is fixed to the front end portions of the front side frames 102 and 102 and the

subframe support portions

103 and 103 and supports the radiator. The front bulkhead 106 has a rectangular frame shape when viewed from the front. Between the rear of the front bulkhead 106 and the left and right front side frames 102, 102 is a power unit room in which an engine and the like are arranged. The front bulkhead 106 has a pair of upper and lower

horizontal members

106A and 106A and a pair of left and right

vertical members

106B and 106B.

The horizontal member 106A is a metal structural member extending in the vehicle width direction. The lateral member 106A is formed in a hollow structure or groove shape having a closed cross section by combining a plurality of steel plates, for example. The upper horizontal member 106A is installed between the upper ends of the pair of left and right

vertical members

106B and 106B. The lower horizontal member 106A is installed between the lower ends of the pair of left and right

vertical members

106B and 106B.

The vertical member 106B is a metal structural member extending in the vertical direction on the inner side in the vehicle width direction of the bumper beam extension 105A. The vertical member 106B is formed in a hollow structure having a closed cross section by combining, for example, a plurality of steel plates. As shown in FIGS. 11 and 12, the vertical member 610 B includes a front member 110 and a rear member 120. The front side member 110 corresponds to a “second L-shaped cross-section member” in the claims. The rear member 120 corresponds to a “first L-shaped cross-section member” in the claims.

As shown in FIG. 11, the front member 110 is a metal member that constitutes the front wall portion and the outer wall portion of the vertical member 106B. The front member 110 is divided into a front upper member 110A and a front lower member 110B.
The front upper member 110 A has a substantially L shape in plan sectional view. The front upper member 110A is integrally provided with a first front wall portion 111, a first outer wall portion 112, and

first flange portions

113 and 114.

The first front wall portion 111 is a portion constituting the upper side of the front wall portion of the vertical member 106B, and extends in the vertical direction and the vehicle width direction. The first outer wall portion 112 is a portion constituting the upper side of the outer wall portion of the vertical member 106B, and extends in the vertical direction and the vehicle front-rear direction. The first outer wall portion 112 extends rearward from the vehicle width direction outer side end portion of the first front wall portion 111.

The first flange portion 113 extends forward from the inner end in the vehicle width direction of the first front wall portion 111, and extends in the up-down direction and the vehicle front-rear direction. The first flange portion 113 is fixed to a first inner wall portion 122 of the rear member 120 described later by welding or the like. The first flange portion 114 extends outward from the rear end portion of the first outer wall portion 112 in the vehicle width direction, and extends in the vertical direction and the vehicle width direction. Moreover, the 1st flange part 114 is being fixed to the 1st rear wall part 121 of the rear side member 120 mentioned later by welding.

The front lower member 110B has a substantially L shape in a plan view. The front lower member 110B integrally includes a second front wall portion 115, a second outer wall portion 116, and

second flange portions

117 and 118.

The second front wall portion 115 is a portion constituting the lower side of the front wall portion of the vertical member 106B, and extends in the vertical direction and the vehicle width direction. The second outer wall portion 116 is a portion constituting the lower side of the outer wall portion of the vertical member 106B, and extends in the vertical direction and the vehicle front-rear direction. The second outer wall portion 116 extends rearward from the outer end portion of the second front wall portion 115 in the vehicle width direction.

The second flange portion 117 extends forward from the vehicle width direction inner side end portion of the second front wall portion 115, and extends in the vertical direction and the vehicle front-rear direction. The second flange portion 117 is fixed to the second inner wall portion 124 of the rear member 120 described later by welding or the like. The second flange portion 118 extends outward from the rear end portion of the second outer wall portion 116 in the vehicle width direction, and extends in the vertical direction and the vehicle width direction. The 2nd flange part 118 is being fixed to the 2nd rear wall part 123 of the rear side member 120 mentioned later by welding, a volt | bolt, etc.

As shown in FIG. 12, the rear member 120 is a metal member constituting the rear wall portion and the inner wall portion of the vertical member 106B. The rear member 120 is divided into two parts, a rear upper member 120A and a rear lower member 120B. The rear upper member 120A has an L shape in a plan view. The rear upper member 120A integrally includes a first rear wall portion 121 and a first inner wall portion 122.

The first rear wall 121 is a portion constituting the upper side of the rear wall of the vertical member 106B, and extends in the vertical direction and the vehicle width direction. The first inner wall portion 122 is a portion constituting the upper side of the inner wall portion of the vertical member 106B, and extends in the vertical direction and the vehicle front-rear direction. The first inner wall portion 122 extends forward from the inner end portion of the first rear wall portion 121 in the vehicle width direction.

The rear lower member 120B has an L shape in a plan view. The rear lower member 120B integrally includes a second rear wall portion 123 and a second inner wall portion 124.

The second rear wall portion 123 is a portion constituting the lower side of the rear wall portion of the vertical member 106B, and extends in the vertical direction and the vehicle width direction. The lower portion of the second rear wall portion 123 shown in FIG. 11 is overlapped with the second flange portion 118 of the front lower member 110B and the front end portion of the subframe support portion 103, and is coupled to each other by a bolt B from the front. . In this manner, the lower fixing portion 140 to which the rear lower member 120B, the front lower member 110B, and the subframe support portion 103 are fixed is formed. The second inner wall portion 124 shown in FIG. 12 is a portion constituting the lower side of the inner wall portion of the vertical member 106B, and extends in the vertical direction and the vehicle front-rear direction. The second inner wall portion 124 extends forward from the inner end in the vehicle width direction of the second rear wall portion 123.

As shown in FIG. 11, the second rear wall portion 123 includes a mounting extension wall 125, a first hook piece 126, and a second hook piece 127.

The mounting extension wall 125 is a portion that extends outward in the vehicle width direction from the outer end portion in the vehicle width direction of the front member 110 in the second rear wall portion 123. That is, the mounting extension wall 125 is formed by extending the second rear wall portion 123 of the rear member 120 outward in the vehicle width direction from the outer end portion in the vehicle width direction of the front member 110. A portion of the vertical member 106B excluding the attachment extension wall 125 (hereinafter referred to as “vertical member main body 130”) is formed in a rectangular hollow cross section extending in the vertical direction.

The first hooking piece 126 is a plate-like portion bent rearward from the vehicle width direction outer side end portion of the mounting extension wall 125, and with respect to the bent flange portion 107a of the connecting plate 107 at the time of temporary fixing described later. Engage by being hooked from above. The first hook piece 126 has a hook shape in which the tip side extends downward in a side view. As shown in FIGS. 13A and 13B, the first hook piece 126 includes a first curvature portion 126a, a first vertical surface 126b, and a first deflection surface 126c. Yes.

The first curvature portion 126a is formed at the boundary between the first hook piece 126 and the mounting extension wall 125, and is a portion that bends backward.

The first vertical surface 126b is a vertical surface extending backward from the lower side of the first curvature portion 126a and extending in the vertical direction and the vehicle front-rear direction.

The first deflection surface 126c is a surface that extends rearward from the upper side of the first curvature portion 126a and is inclined with respect to the vertical direction. The first deflection surface 126c is continuous with the upper end portion of the first vertical surface 126b. The first deflection surface 126c may be inclined outward in the vehicle width direction with respect to the first vertical surface 126b as in the second embodiment, or may be inclined inward in the vehicle width direction. A surface in the plate width direction of the first hook piece 126 includes a first vertical surface 126b and a first deflection surface 126c. The plate width direction of the first hook piece 126 coincides with the vertical direction. Thus, the first hook piece 126 supports the load (self-weight) on the surface in the plate width direction including the first vertical surface 126b and the first deflection surface 126c.

As shown in FIG. 11, the second hooking piece 127 is a plate-like portion bent forward from the vehicle width direction outer side end portion of the mounting extension wall 125, and the opening 105Ba of the mounting plate 105B at the time of temporary fixing. The upper edge 105Bc (see FIG. 10) is hooked and engaged from below. The second hook piece 127 has a hook shape in which the distal end side extends upward in a side view. The second hook piece 127 is spaced downward from the first hook piece 126. As shown in FIG. 14A and FIG. 14B, the second hook piece 127 includes a second curvature portion 127a, a second vertical surface 127b, and a second deflection surface 127c. Yes.

The second curvature portion 127a is formed at the boundary between the first hook piece 126 and the mounting extension wall 125, and is a portion that bends forward.

The second vertical surface 127b is a vertical surface extending forward from the upper side of the second curvature portion 127a and extending in the vertical direction and the vehicle front-rear direction.

The second deflection surface 127c is a surface that extends forward from the lower side of the second curvature portion 127a and is inclined with respect to the vertical direction. The second deflection surface 127c is continuous with the lower end portion of the second vertical surface 127b. The second deflection surface 127c may be inclined outward in the vehicle width direction relative to the second vertical surface 127b as in the second embodiment, or may be inclined inward in the vehicle width direction. The surface of the second hook piece 127 in the plate width direction includes a second vertical surface 127b and a second deflection surface 127c. The plate width direction of the second hook piece 127 coincides with the vertical direction. As a result, the second hooking piece 127 supports the load on the surface in the plate width direction including the second vertical surface 127b and the second deflection surface 127c.

As shown in FIG. 9, the upper portion of the mounting extension wall 125 is overlapped with the mounting plate 105B and the connecting plate 107, and is coupled to each other by a bolt B from the front. In this way, the upper coupling portion 150 is formed in which the mounting extension wall 125, the mounting plate 105B, and the connecting plate 107 are coupled. The lower part of the mounting extension wall 125 is overlapped with the mounting plate 105B and the connecting plate 107, and is connected to each other by a bolt B from the front. As described above, the lower coupling portion 160 is formed in which the mounting extension wall 125, the mounting plate 105B, and the connecting plate 107 are coupled.

The upper coupling portion 150 is formed between the first hook piece 126 and the second hook piece 127. The upper coupling portion 150 is disposed above the upper fitting rib 105Bb. The lower coupling portion 160 is formed between the second hook piece 127 and the lower fixing portion 140. The lower coupling portion 160 is disposed below the lower fitting rib 105Bb.

As shown in FIG. 11, the front member 110 has a recess 119. The concave portion 119 is a portion where a part of the first outer wall portion 112, the second outer wall portion 116, the first front wall portion 111, and the second front wall portion 115 of the front side member 110 is recessed inward in the vehicle width direction. The concave portion 119 is formed over a predetermined region in the vertical direction from the lower position of the first hook piece 126 to the upper position of the lower fixing portion 140. The recessed portion 119 is formed at a position substantially corresponding to the mounting extension wall 125 in the vehicle width direction. The second hook 127, the upper coupling portion 150, and the lower coupling portion 160 are formed at positions corresponding to the concave portion 119 in the vehicle width direction, and are formed on the outer side in the vehicle width direction with respect to the concave portion 119. In the front member 110, the width Wa in the left-right direction of the front side wall at a position corresponding to the upper coupling portion 150 is formed smaller than the width Wb in the left-right direction of the front side wall at a position corresponding to the first hook piece 126 in the front member 110. (Wa <Wb).

As shown in FIGS. 11 and 12, the vehicle body front portion 101 includes a connecting member 170 and a reinforcing member 180 as accessory parts of the vertical member 106B.

As shown in FIG. 11, the connecting member 170 is a metal plate-like member that connects the front lower member 110 B and the lower side member 106 A. The connecting member 170 is integrally provided with a connecting front wall portion 171, a connecting outer wall portion 172, and connecting flange portions 173 to 176.

The connecting front wall portion 171 is a portion extending from the lower end portion of the second front wall portion 115 to the lateral member 106A, and extends obliquely in the vertical direction and the vehicle width direction. The connecting outer wall portion 172 is a portion extending from the lower end portion of the second outer wall portion 116 to the lateral member 106A, and extends in the vertical direction and the vehicle front-rear direction. The connection outer wall portion 172 extends rearward and downward from the vehicle width direction outer side end portion of the connection front wall portion 171.

The connecting flange portion 173 extends forward from the inner end in the vehicle width direction of the connecting front wall portion 171 and extends in the vertical direction and the vehicle front-rear direction. The connecting flange portion 173 is fixed to the second inner wall portion 124 of the rear member 120 by welding or the like. The connecting flange portion 174 extends forward from the front end portion of the connecting front wall portion 171 and extends in the vehicle front-rear direction and the vehicle width direction. The connecting flange portion 174 is fixed to the appropriate position of the lateral member 106A by welding or the like. The connecting flange portion 175 extends outward from the rear end portion of the connecting outer wall portion 172 in the vehicle width direction, and extends in the vertical direction and the vehicle width direction. The connecting flange portion 175 is fixed to the second rear wall portion 123 of the rear member 120 by welding or the like. The connecting flange portion 176 extends from the lower end portion of the connecting outer wall portion 172 outward in the vehicle width direction, and extends in the vehicle front-rear direction and the vehicle width direction. The connecting flange portion 176 is disposed inside the lateral member 106A.

As shown in FIG. 12, the reinforcing member 180 is a metal plate-like member that reinforces the connecting portion between the lower end portion of the vertical member 106B and the outer end portion in the vehicle width direction of the horizontal member 106A. The reinforcing member 180 is disposed inside the lateral member 106A. The reinforcing member 180 integrally includes a first plate portion 181, a second plate portion 182, a front flange portion 183, and a rear flange portion 184.

The first plate portion 181 is a portion fixed to the bottom surface of the lateral member 106A by welding or the like, and extends in the vehicle longitudinal direction and the vehicle width direction. The first plate portion 181 shown in FIG. 11 is sandwiched between the connecting flange portion 176 and the bottom surface of the lateral member 106A. The first plate portion 181 is fixed to the connecting flange portion 176 and the lateral member 106A by welding or the like.

The second plate portion 182 extends upward from the inner end portion in the vehicle width direction of the first plate portion 181 and extends in the vertical direction and the vehicle front-rear direction. The second plate part 182 is in contact with the second inner wall part 124 of the rear member 120.

The front flange portion 183 extends upward from the front end portion of the first plate portion 181. The front flange portion 183 is fixed to an appropriate position of the lateral member 106A by welding or the like.

The rear flange portion 184 extends upward from the rear end portion of the first plate portion 181. The rear flange portion 184 is fixed to an appropriate position of the lateral member 106A by welding or the like.

The vehicle body front part 101 to which the vehicle body front part structure according to the second embodiment is applied is basically configured as described above. Next, the assembly procedure will be described with reference to FIGS.

First, the body 108, the front bulkhead 106, and the bumper beam assembly 105 are individually manufactured by welding or the like. Here, the “body” includes the front side frame 102, the connecting plate 107, the subframe support portion 103, the front and rear frames 104, and the like.

Subsequently, as shown in FIG. 15A, the body 108 and the front bulkhead 106 are temporarily fixed. Specifically, the first hook piece 126 of the front bulkhead 106 is hooked and engaged with the bent flange portion 107a of the connecting plate 107 from above. At this time, the first vertical surface 126b of the first hook piece 126 comes into contact with and engages with the bent flange portion 107a. Further, in the lower fixing portion 140, the front bulkhead 106 and the subframe support portion 103 are coupled (temporarily fixed) to each other by a bolt B from the front. Thereby, the body 108 and the front bulkhead 106 are temporarily fixed. In the temporarily fixed state, as shown in FIG. 15B, the

bolt holes

108a and 108b of the body 108 and the bolt holes 106c and 106d of the front bulkhead 106 are shifted from each other vertically. On the other hand, the bolt hole 106e of the front bulkhead 106 is formed in a long hole shape that is larger in the vertical direction than the bolt hole 103a of the sub-frame support portion 103. Therefore, the front bulkhead 106 is moved by a predetermined amount in the vertical direction. Also, the bolt hole 106e of the front bulkhead 106 and the bolt hole 103a of the sub-frame support portion 103 are in communication with each other.

Although illustration is omitted, electrodeposition coating is simultaneously performed on the body 108 and the front bulkhead 106 in the temporarily fixed state. After the electrodeposition coating, the front bulkhead 106 is removed from the body 108 and the temporarily fixed state is released. Thereafter, the engine is assembled to the front and rear frames 104 of the body 108, and the radiator is assembled to the front bulkhead 106.

Subsequently, as shown in FIG. 16A, the front bulkhead 106 and the bumper beam assembly 105 are temporarily fixed. Specifically, the second hook piece 127 of the front bulkhead 106 is hooked and engaged with the upper edge 105Bc of the opening 105Ba of the mounting plate 105B from below. At this time, the second vertical surface 127b of the second hooking piece 127 contacts and engages with the upper edge 105Bc of the opening 105Ba, and the tip of the second hooking piece 127 contacts the inner surface of the upper wall 105Aa of the bumper beam extension 105A. Engage in contact. Thereby, the front bulkhead 106 and the bumper beam assembly 105 are temporarily fixed. In the temporarily fixed state, as shown in FIG. 16B, the bolt holes 106c and 106d of the front bulkhead 106 and the bolt holes 105d and 105e of the bumper beam assembly 105 are shifted from each other vertically.

Subsequently, as shown in FIG. 17A, with the front bulkhead 106 and the bumper beam assembly 105 temporarily fixed, the first hook piece 126 of the front bulkhead 106 is attached to the bent flange portion 107a of the connecting plate 107. Hook from above and engage. Thereby, the three of the body 108, the front bulkhead 106, and the bumper beam assembly 105 are temporarily fixed. In the temporarily fixed state, as shown in FIG. 17B, the

bolt holes

108a and 108b of the body 108, the bolt holes 106c and 106d of the front bulkhead 106, and the bolt holes 105d and 105e of the bumper beam assembly 105 are formed. It will be in the state shifted mutually up and down. Even in the temporarily fixed state, the bolt hole 106e of the front bulkhead 106 and the bolt hole 103a of the subframe support portion 103 are in communication with each other.

Subsequently, as shown in FIGS. 18A and 18B, the front bulkhead 106 and the bumper beam assembly 105 are lifted with respect to the body 108, and the bolt holes 108 a and 108 b of the body 108 and the front bulkhead 106. The positions of the bolt holes 106c and 106d are aligned with each other. At this time, the first hook piece 126 is separated upward from the bent flange portion 107a, and the engagement of the first hook piece 126 with the bent flange portion 107a is released. Subsequently, the bolt B is inserted from the front into the bolt hole 106e of the front bulkhead 106 and the bolt hole 103a of the subframe support portion 103, and the front bulkhead 106 and the subframe support portion 103 are coupled to each other by the bolt B (main fixing). ) In the lifted state, the bolt holes 105 d and 105 e of the bumper beam assembly 105 are vertically displaced with respect to the bolt holes 108 a and 108 b of the body 108 and the bolt holes 106 c and 106 d of the front bulkhead 106.

Subsequently, as shown in FIGS. 19A and 19B, the bumper beam assembly 105 is lifted with respect to the body 108 and the front bulkhead 106, and the bolt holes 105 d and 105 e of the bumper beam assembly 105 and the body 108 are lifted. The positions of the

bolt holes

108a and 108b and the bolt holes 106c and 106d of the front bulkhead 106 are aligned. At this time, the second hook piece 127 moves downward from the upper edge 105Bc of the opening 105Ba and the upper wall 105Aa of the bumper beam extension 105A, and the engagement of the second hook piece 127 with the upper edge 105Bc and the upper wall 105Aa is released. It will be. Subsequently, the bolt B is inserted into the

bolt holes

105d, 106c, and 108a from the front, and the bolt B is inserted into the

bolt holes

105e, 106d, and 108b from the front, and the front bulkhead 106 and the bumper beam assembly 105 are inserted into the body 108. Are connected by bolts B (fixed). According to this manufacturing procedure, since the bolt fastening operation between the three members can be continuously performed after the temporary fixing operation between the three members is continuously performed, the assembling workability is improved.

First, the body 108 and the front bulkhead 106 are temporarily fixed, the front bulkhead 106 is lifted with respect to the body 108, and the front bulkhead 106 and the subframe support portion 103 are coupled to each other by a bolt B (main fixing). ), The front bulkhead 106 and the bumper beam assembly 105 may be temporarily fixed. That is, the assembly procedure of FIGS. 16A, 16B to 18A, and 18B may be changed.

As shown in FIG. 8, the vehicle body front portion 101 of the second embodiment is fixed to a pair of left and right front side frames 102, 102 extending in the vehicle front-rear direction, and the front end portion of the front side frame 102. And a front bulkhead 106 having a pair of left and right

vertical members

106B, 106B. As shown in FIG. 11, each vertical member 106 B includes a vertical member main body 130, a mounting extension wall 125 extending outward in the vehicle width direction from the vehicle width direction outer end of the vertical member main body 130, and a mounting extension wall 125. And a first hook piece 126 that is bent rearward from the outer end portion in the vehicle width direction and hooked and engaged with the front side frame 102 from above. As shown in FIGS. 13 (a) and 13 (b), the first hooking piece 126 is continuous with the first vertical surface 126b extending in the vertical direction and the upper end of the first vertical surface 126b, and with respect to the vertical direction. And a first deflection surface 126c that is inclined.

According to the second embodiment, the front bulkhead 106 can be temporarily fixed to the front side frame 102 by the first hook piece 126. This eliminates the need for a jig, and eliminates the need for attaching the jig to each member or attaching the jig to each other, thereby improving the assembly workability. In addition, the left and right

vertical members

106B and 106B of the front bulkhead 106 each have a first hook piece 126, and the first hook piece 126 is hooked on the front side frame 102 from above, so that the front bulkhead 106 falls. Can be suppressed. The first hooking piece 126 includes a first vertical surface 126b extending in the vertical direction and a first deflection surface 126c that is continuous with the upper end of the first vertical surface 126b and is inclined with respect to the vertical direction. Therefore, it has sufficient strength and rigidity and can support the load (self-weight). In addition, since a ridge line is formed between the first vertical surface 126b and the first deflection surface 126c, deformation of the first hook piece 126 in the out-of-plane direction can be suppressed.

As shown in FIG. 8, the vehicle body front portion 101 of the second embodiment includes a bumper beam assembly 105 that extends in the vehicle width direction and is laid between the front end portions of a pair of left and right front side frames 102 and 102. Yes. As shown in FIG. 11, the vertical member 106 B is bent forward from the outer end in the vehicle width direction of the mounting extension wall 125 below the first hook piece 126, and hooked from below on the bumper beam assembly 105. It has the 2nd hook piece 127 to engage. As shown in FIGS. 14 (a) and 14 (b), the second hooking piece 127 is continuous with the second vertical surface 127b extending in the up-down direction and the lower end of the second vertical surface 127b, and with respect to the up-down direction. And a second deflection surface 127c that is inclined.

According to this configuration, the front bulkhead 106 can be temporarily fixed to the bumper beam assembly 105 by the second hooking piece 127. This eliminates the need for a jig, and eliminates the need for attaching the jig to each member or attaching the jig to each other, thereby improving the assembly workability. Further, since the engagement force between the front bulkhead 106 and the front side frame 102 in the first hook piece 126 is strengthened by the load (self-weight) of the bumper beam assembly 105, the fall of the front bulkhead 106 can be further suppressed. The second hook piece 127 includes a second vertical surface 127b extending in the vertical direction and a second deflection surface 127c that is continuous with the lower end portion of the second vertical surface 127b and is inclined with respect to the vertical direction. Therefore, the load can be supported with sufficient strength and rigidity. In addition, since a ridge line is formed between the second vertical surface 127b and the second deflection surface 127c, deformation of the second hook piece 127 in the out-of-plane direction can be suppressed.

As shown in FIG. 9, the vehicle body front portion 101 of the second embodiment includes a connecting plate 107 that is fixed to the front end portion of the front side frame 102 and connects the front side frame 102 and the bumper beam assembly 105 to each other. Yes. A bent flange portion 107 a bent rearward is formed on the upper edge of the connecting plate 107. The first hook piece 126 engages with the bent flange portion 107a.

According to this configuration, since the bent flange portion 107a is not easily deformed even when a large load is applied, the first hook piece 126 and the bent flange portion 107a can be reliably engaged. In the second embodiment, since the first vertical surface 126b of the first hook piece 126 abuts and engages with the bent flange portion 107a, the first deflection surface 126c abuts against the bent flange portion 107a. Compared with the case where it joins, the bending part between the 1st perpendicular surface 126b and the 1st deflection surface 126c becomes difficult to bend.

As shown in FIG. 8, the bumper beam assembly 105 is attached to the front end portions of the front side frames 102 and 102 and has a pair of left and right cylindrical

bumper beam extensions

105A and 105A, and each bumper beam extension. A pair of left and right mounting

plates

105B and 105B fixed to the rear ends of 105A and 105A, respectively. As shown in FIG. 10, the mounting plate 105B has an opening 105Ba facing the inside of the bumper beam extension 105A and a pair of upper and lower portions protruding forward on the upper side and the lower side of the opening 105Ba and into which the rear end portion of the bumper beam extension 105A is fitted. It has fitting ribs 105Bb and 105Bb. The second hook piece 127 engages with the upper edge 105Bc of the opening 105Ba.

According to this configuration, the L-shaped section formed by the upper fitting rib 105Bb and the upper edge 105Bc of the opening 105Ba is not easily deformed even when a large load is applied, so the second hook piece 127 and the opening 105Ba are not deformed. The upper edge 105Bc can be reliably engaged. In the present embodiment, since the second vertical surface 127b of the second hook 127 is in contact with and engaged with the upper edge 105Bc of the opening 105Ba, the second deflection surface 127c is in contact with the upper edge 105Bc of the opening 105Ba. Compared to the case of engagement, the bent portion between the second vertical surface 127b and the second deflection surface 127c is less likely to bend.

As shown in FIG. 9, the vehicle body front portion 101 of the second embodiment includes an upper coupling portion 150 in which a mounting extension wall 125, a coupling plate 107, and a mounting plate 105B are coupled. The upper coupling portion 150 is formed between the first hook piece 126 and the second hook piece 127.

According to this configuration, since the front bulkhead 106 and the bumper beam assembly 105 can be fixed to the front side frame 102 by the common upper coupling portion 150, the assembling workability can be improved. For example, the bumper beam assembly 105 is temporarily fixed to the front bulkhead 106, the front bulkhead 106 is temporarily fixed to the front side frame 102, and finally the three members are aligned, and then finally fixed with one bolt B. Can do.

As shown in FIG. 11, in the vehicle body front portion 101 of the second embodiment, a subframe support portion 103 extending downward from the front portion of the front side frame 102, a vertical member 106B, and the front side frame 102 are temporarily fixed. And a lower fixing portion 140 to which the vertical member 106B and the subframe support portion 103 are temporarily fixed below the first hooking piece 126.

According to this configuration, the body 108 including the front side frame 102 and the sub-frame support portion 103, and the front bulkhead 106 can be temporarily fixed to perform electrodeposition coating. Further, after electrodeposition coating, the upper and lower temporary fixings are removed, the engine is assembled to the body 108 and the radiator is assembled to the front bulkhead 106, and then both can be permanently fixed. Thereby, productivity can be improved.

As shown in FIG. 11, the vertical member body 130 has a recess 119 that is recessed inward in the vehicle width direction from a position below the first hook piece 126 to a predetermined region in the vertical direction. The second hook piece 127 and the upper coupling portion 150 are formed on the outer side in the vehicle width direction with respect to the concave portion 119.

According to this configuration, the distance between the vertical member main body 130 and the first hook piece 126 can be shortened to increase the strength and rigidity. In addition, since the second hook piece 127 is formed on the outer side in the vehicle width direction with respect to the recess 119, the strength and rigidity of the mounting extension wall 125 can be increased, and the strength and rigidity of the second hook piece 127 are also increased. be able to. Furthermore, it is possible to provide the front bulkhead 106 with torsional rigidity by placing the upper coupling portion 150 close to the cross-sectional center of the vertical member main body 130.

As shown in FIGS. 11 and 12, the vertical member body 130 includes a rear member 120 as a first L-shaped cross-section member that forms an inner wall and a rear wall, and a second L-shape that forms an outer wall and a front wall. A front member 110 as a cross-sectional member is included. The vertical member main body 130 is formed in a hollow cross section extending in the vertical direction. The attachment extension wall 125 is formed by extending the rear member 120 out of the front member 110 and the rear member 120 toward the outer side in the vehicle width direction from the front member 110.

According to this configuration, since the mounting extension wall 125 is formed using the L-shaped cross-section member constituting the vertical member main body 130, the manufacturing can be simplified, and the manufacturing cost can be reduced.

As mentioned above, although 2nd Embodiment of this invention was described in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of invention, it can change suitably.

The mounting extension wall 125 of the second embodiment is formed by extending the rear member 120 out of the front member 110 and the rear member 120 outward in the vehicle width direction from the front member 110. The side member 120 may be formed so as to extend outward in the vehicle width direction.

In the second embodiment, the vertical member main body 130 is formed in a rectangular hollow cross section, but may be formed in a hollow cross section having a polygonal shape other than a circular shape or a rectangular shape, for example.

The first deflection surface 126c of the second embodiment is continuous with the upper end portion of the first vertical surface 126b, but may be continuous with the lower end portion of the first vertical surface 126b. The second deflection surface 127c of the second embodiment is continuous with the lower end portion of the second vertical surface 127b, but may be continuous with the upper end portion of the second vertical surface 127b.

Next, a vehicle to which the vehicle body front structure according to the third embodiment of the present invention is applied will be described in detail below.

The vehicle body front structure according to the third embodiment is a cooling device mounting structure composed of a composite structure of a front bulkhead and a bracket that supports an intercooler (cooling device). As will be described in detail later, this cooling device mounting structure has main features in the connecting structure of the vertical member and the horizontal member constituting the front bulkhead and the bracket.

The cooling device mounting structure exemplified in the third embodiment assumes a cooling device mounting structure mounted on a turbo car equipped with an intercooler, but the present invention is not limited to this. Below, after explaining the structure of the vehicle body front part to which this cooling device attachment structure is applied, the cooling device attachment structure of this embodiment will be explained.

As shown in FIG. 20, the vehicle body front portion 201 in this embodiment includes a pair of left and right front side frames 202, a sub frame 204, and a front bulkhead 206.

The front side frame 202 is a metal structural member extending in the vehicle front-rear direction. The front side frame 202 is formed in a hollow structure having a closed cross section. Connecting plates 207 are fixed to the front end portions of the pair of left and right front side frames 202, 202, respectively. The connecting plate 207 connects the front end portion of the front side frame 202, the vertical member 206B described later of the front bulkhead 206, the front end portion of the upper member 219, and the rear portion of the bumper beam assembly (not shown).

The subframe 204 is fastened to the front side frame 202 via a subframe support portion 203 whose front portion hangs down from the front portion of the front side frame 202. Although not shown, the subframe 204 supports suspension parts and mounts a power unit.

20, reference numeral 226 denotes a joint frame that supports the upper end portion of the front bulkhead 206 at the front end and the rear end portion supported by the upper member 219. Reference numeral 227 denotes a damper housing that is supported on the upper wall of the upper member 219 on the power mounting chamber side and supported on the upper surface of the front side frame 202.

The radiator 209 is placed on a lower lateral member 206A, which will be described later, of the front bulkhead 206. The upper portion of the radiator 209 is supported by a radiator support bracket 209a disposed on the left and right sides of the upper lateral member 206A.

The radiator support bracket 209a corresponds to an “upper bracket” in the claims.

The intercooler 208 is disposed in front of the radiator 209 and attached to the front bulkhead 206. In FIG. 20, the radiator 209 and the intercooler 208 are indicated by virtual lines (two-dot chain lines) for the convenience of drawing.

As shown in FIG. 21, the intercooler 208 includes an intercooler main body 208a and a hose coupling portion 208b. FIG. 21 shows the left end portion of the intercooler 208 indicated by the phantom line (two-dot chain line) in FIG. 20, but the right end portion of the intercooler 208 (not shown) also has a hose connecting portion 208b.

A mounting seat 231 is formed above and below the hose connecting portion 208b. A lower portion of the hose connecting portion 208b is supported by a bracket 205 described in detail later through the mounting seat 231.
Further, the upper portion of the hose connecting portion 208b is fixed to the vertical member 206B of the front bulkhead 206, which will be described in detail later, through the mounting seat 231 and the support member 233.

The upper portion of the hose connecting portion 208b corresponds to the “upper portion of the intercooler” in the claims.

The support member 233 in this embodiment is formed of a plate body bent in an L shape, and a flange 233a is formed at an edge portion along the longitudinal direction of the support member 233.
One end of the ventilation hose 232 is connected to the hose connection portion 208b. The ventilation hose 232 corresponds to “piping” in the claims.

This vent hose 232 is also connected at one end to a right hose connecting portion (not shown). Then, the ventilation hose 232 extends from the hose connecting portion 208b side toward the lower end portion side of the vertical member 206B, and then, as shown in FIG. 20, at the lower end portion of the vertical member 206B, from the vehicle width direction outer side to the vehicle width direction inner side. And extending through the top of the front side frame 202.

Further, one of the ventilation hoses 232 extending from each of the left and right hose connection portions 208b is connected to a turbocharger (not shown), and the other is connected to an air cleaner (not shown).

As shown in FIG. 20, the cooling device mounting structure S mainly includes a front bulkhead 206 and a pair of left and

right brackets

205, 205.

As shown in FIG. 20, the front bulkhead 206 is formed of a substantially rectangular frame when viewed from the front of the vehicle body. As described above, an intercooler 208 as a cooling device is attached to the front bulkhead 206 via a pair of left and

right brackets

205 and 205, and a radiator 209 is supported.
The front bulkhead 206 has a pair of upper and lower horizontal members 206A, a pair of left and right

vertical members

206B and 206B, and a reinforcing member 280 (see FIG. 23B) described later.

The horizontal member 206A shown in FIG. 20 is a metal structural member extending in the vehicle width direction. The transverse member 206A is formed into a hollow structure or groove shape having a closed cross section by combining a plurality of steel plates, for example. The upper horizontal member 206A is constructed between the upper ends of the pair of left and right

vertical members

206B and 206B. The lower horizontal member 206A is constructed between the lower ends of the pair of left and right

vertical members

206B and 206B.

As shown in FIG. 22, the lower lateral member 206A is a member formed by welding a lateral member main body 206A1 and a lid member 206A2 formed by pressing each metal plate. In FIG. 22, reference symbol P denotes a recess in which a mount (not shown) that supports the lower portion of the radiator 209 (see FIG. 20) is disposed.

As shown in FIG. 23A, the lateral member main body 206A1 has a hat cross section with an upward opening in a longitudinal sectional view along the vehicle front-rear direction.
The horizontal member main body 206A1 includes a bottom wall 260 that forms a hat cross section, a front wall 261, and a rear side wall 262. Further, the horizontal member main body 206A1 includes a front collar 263 that extends forward from the upper edge of the front wall 261, and a rear collar 264 that extends rearward from the upper edge of the rear side wall 262.

As shown in FIG. 23A, the lid member 206A2 closes the upward opening of the hat cross section of the horizontal member body 206A1 on the inner side in the vehicle width direction than the vertical member 206B (see FIG. 23B).
The lid member 206A2 has a hat cross section with an upward opening, and has a shape corresponding to the hat cross section of the lateral member main body 206A1.

That is, the lid member 206A2 includes a lid bottom wall 265, a lid front wall 266, a lid rear side wall 267, a lid front collar 268, and a lid rear collar 269. The lid bottom wall 265 extends in the vehicle front-rear direction and the vehicle width direction. The lid front wall 266 extends upward from the front edge of the lid bottom wall 265. The lid rear side wall 267 extends upward from the rear edge of the lid bottom wall 265. The lid front collar 268 extends forward from the upper edge of the lid front wall 266. The lid rear collar 269 extends rearward from the upper edge of the lid rear side wall 267.

The lid front collar 268 is joined to the upper surface of the front collar 263 of the horizontal member main body 206A1 by welding. The lid rear collar 269 is joined to the upper surface of the rear collar 264 of the horizontal member main body 206A1 by welding. In FIG. 4A, reference numeral 205 denotes a bracket.

As shown in FIG. 23B, a joining flange 270 extending upward is formed at the outer end of the lid member 206A2 in the vehicle width direction. The joining flange 270 is joined by welding to a second inner wall 224 described later of the vertical member 206B.
The second inner wall 224 corresponds to the “inner wall of the vertical member” in the claims.

The lid member 206A2 is not disposed at the outer end in the vehicle width direction of the horizontal member main body 206A1 in which the lower end portion of the vertical member 206B extends in the hat cross section, and opens upward.
In FIG. 23B, reference numeral 260 denotes a bottom wall of the horizontal member main body 206A1, reference numeral 261 denotes a front wall of the horizontal member main body 206A1, and reference numeral 263 denotes a front collar portion of the horizontal member main body 206A1. Reference numeral 205 denotes a bracket, and reference numeral 280 denotes a reinforcing member.

As shown in FIG. 20, the vertical member 206 B is a metal structural member that extends vertically in the vehicle width direction inside of the front end portion of the front side frame 202.
Further, as shown in FIG. 22, the vertical member 206 B has an arc so that the lower end portion gradually protrudes forward as it goes from the upper part to the lower part.

Such a vertical member 206B is formed in a hollow structure having a closed cross section by, for example, combining a plurality of steel plates. As shown in FIGS. 22 and 24, the vertical member 206 B includes a front side member 210 and a rear side member 220. The front member 210 corresponds to a “first L-shaped cross-section member” in the claims. The rear member 220 corresponds to a “second L-shaped cross-section member” in the claims.

The front member 210 (first L-shaped cross-section member) is a metal member constituting the front wall portion and the outer wall of the vertical member 206B, as shown in FIG. The front member 210 is divided into a front upper member 210A, a front middle member 210B, and a front lower member 210C.

The front upper member 210A has a substantially L shape in a plan view. The front upper member 210A integrally includes a first front wall portion 211, a first outer wall 212, and

first flanges

213 and 214.

The first front wall portion 211 is a portion constituting the upper side of the front wall portion of the vertical member 206B, and extends in the vertical direction and the vehicle width direction. The first outer wall 212 is a portion constituting the upper side of the outer wall of the vertical member 206B, and extends in the up-down direction and the vehicle front-rear direction. The first outer wall 212 extends rearward from the outer end in the vehicle width direction of the first front wall 211.

The first flange 213 extends forward from the inner end in the vehicle width direction of the first front wall portion 211, and extends in the vertical direction and the vehicle front-rear direction. The first flange 213 is fixed to a first inner wall 222 of a rear member 220 described later by welding or the like. The first flange 214 extends outward from the rear end portion of the first outer wall 212 in the vehicle width direction, and extends in the vertical direction and the vehicle width direction. The first flange 214 is fixed to a first rear side wall 221 of a rear side member 220 described later by welding or the like.

The front middle member 210B has a substantially L shape in a plan view. The front middle member 210B integrally includes a second front wall portion 215, a second outer wall 216, and

second flanges

217 and 218.

The second front wall portion 215 is a portion constituting the lower side of the front wall portion of the vertical member 206B, and extends in the vertical direction and the vehicle width direction. The second outer wall 216 is a portion constituting the lower side of the outer wall of the vertical member 206B, and extends in the vertical direction and the vehicle front-rear direction. The second outer wall 216 extends rearward from the outer end in the vehicle width direction of the second front wall 215.

The second flange 217 extends forward from the inner end in the vehicle width direction of the second front wall portion 215, and extends in the vertical direction and the vehicle front-rear direction. The second flange 217 is fixed to a second inner wall 224 of the rear member 220 described later by welding or the like. The second flange 218 extends outward from the rear end of the second outer wall 216 in the vehicle width direction, and extends in the vertical direction and the vehicle width direction. The second flange 218 is fixed to a second rear side wall 223 of the rear member 220 described later by welding, bolts, or the like.

The front lower member 210C is a metal plate-like member that connects the front middle member 210B and the lower lateral member 206A as shown in FIG. The front lower member 210C is integrally provided with a third front wall portion 271, a third outer wall 272, and flanges 273 to 276.

The flange 274 corresponds to the “lower end flange” in the claims.

The third front wall portion 271 is a portion extending from the lower end portion of the second front wall portion 215 to the lateral member 206A, and extends obliquely in the vertical direction and the vehicle width direction. The third outer wall 272 is a portion extending from the lower end portion of the second outer wall 216 to the lateral member 206A, and extends in the vertical direction and the vehicle front-rear direction. The third outer wall 272 extends rearward and downward from the vehicle width direction outer side end portion of the third front wall portion 271.

The flange 273 extends forward from the inner end in the vehicle width direction of the third front wall portion 271 and extends in the vertical direction and the vehicle front-rear direction. The flange 273 is fixed to the second inner wall 224 of the rear member 220 by welding or the like. The flange 274 extends forward from the front end of the third front wall 271 and extends in the vehicle longitudinal direction and the vehicle width direction. The flange 274 is fixed to an appropriate position of the lateral member 206A by welding or the like. The flange 275 extends from the rear end portion of the third outer wall 272 outward in the vehicle width direction, and extends in the vertical direction and the vehicle width direction. The flange 275 is fixed to the second rear side wall 223 of the rear member 220 by welding or the like. The flange 276 extends from the lower end portion of the third outer wall 272 outward in the vehicle width direction, and extends in the vehicle front-rear direction and the vehicle width direction. The flange 276 is disposed inside the lateral member 206A.

The rear member 220 (second L-shaped cross-section member) is a metal member that constitutes the rear side wall and the inner side wall of the vertical member 206B, as shown in FIG. The rear member 220 is divided into a rear upper member 220A and a rear lower member 220B. The rear upper member 220A has an L shape in a plan view. The rear upper member 220A integrally includes a first rear side wall 221 and a first inner side wall 222.

The first rear side wall 221 is a part constituting the upper side of the rear side wall of the vertical member 206B, and extends in the vertical direction and the vehicle width direction. The first inner wall 222 is a portion constituting the upper side of the inner wall of the vertical member 206B, and extends in the vertical direction and the vehicle front-rear direction. The first inner side wall 222 extends forward from the inner end in the vehicle width direction of the first rear side wall 221.

The rear lower member 220B has an L shape in a plan view. The rear lower member 220B integrally includes a second rear side wall 223 and a second inner side wall 224.

The second rear side wall 223 is a part constituting the lower side of the rear side wall of the vertical member 206B, and extends in the vertical direction and the vehicle width direction. The lower part of the second rear side wall 223 shown in FIG. 22 is overlapped with the second flange 218 of the front middle member 210B and the front end part of the subframe support part 203, and is connected to each other by a bolt B from the front. In this manner, the lower fixing portion 240 to which the rear lower member 220B, the front middle member 210B, and the subframe support portion 203 are fixed is formed. The second inner wall 224 shown in FIG. 24 is a portion constituting the lower side of the inner wall of the vertical member 206B, and extends in the vertical direction and the vehicle front-rear direction. The second inner side wall 224 extends forward from the inner end in the vehicle width direction of the second rear side wall 223.

As shown in FIG. 24, the reinforcing member 280 is a metal plate-like member that reinforces the connecting portion between the lower end portion of the vertical member 206B and the outer end portion in the vehicle width direction of the horizontal member 206A. The reinforcing member 280 is disposed inside the lateral member 206A.

As shown in FIG. 25, the reinforcing member 280 is integrally provided with a first plate portion 281, a second plate portion 282, a front flange 283, and a rear flange 284.
The first plate portion 281 corresponds to the “lower portion arranged along the bottom wall of the horizontal member” in the claims. The second plate part 282, the front flange 283, and the rear flange 284 correspond to the “upper part rising from the lower edge part” in the claims.

A raised portion 280a protruding upward from the general surface is formed at the center of the first plate portion 281.

As shown in FIG. 23B, the first plate portion 281 is a portion that is fixed to the bottom wall 260 of the lateral member main body 206A1 by welding or the like, and extends in the vehicle longitudinal direction and the vehicle width direction. .
As shown in FIG. 22, the first plate portion 281 is sandwiched between the flange 276 of the vertical member 206B and the bottom wall 260 of the horizontal member 206A. The first plate portion 281 is fixed to the flange 276 and the lateral member 206A by welding or the like.

Returning to FIG. 25, the second plate portion 282 extends upward from the vehicle width direction inner side end portion of the first plate portion 281, and extends in the vertical direction and the vehicle front-rear direction.
A bead 282a extending in the vertical direction is formed at the approximate center of the second plate portion 282 in the vehicle longitudinal direction.

The second plate portion 282 is fixed to the second inner wall 224 of the rear member 220 by welding or the like.

The front flange 283 is extended upward from the front end portion of the first plate portion 281. The front flange 283 is fixed to the front wall 261 (see FIG. 23B) of the horizontal member main body 206A1 (see FIG. 23B) by welding or the like.

The rear flange 284 extends upward from the rear end portion of the first plate portion 281. The rear flange 284 is attached to the rear side wall 262 of the horizontal member main body 206A1 (see FIG. 23B) via the second rear side wall 223 (see FIG. 23B) of the vertical member 206B (see FIG. 23B). It is fixed by welding or the like.

Further, the second plate portion 282 and the front flange 283, and the second plate portion 282 and the rear flange 284 are also fixed by welding or the like.

The bracket 205 will be described below with reference to FIGS. 26 (a), 26 (b), and 26 (c).
The bracket 205 is formed of a bent plate.

The bracket 205 includes a vertical wall 251 disposed along the front wall 261 (see FIG. 26C) of the horizontal member main body 206A1 (see FIG. 26C), and forward from the upper edge of the vertical wall 251. A lateral wall 252 that bends and extends in an L shape, a fold line 253 that crosses in the vehicle width direction (left and right direction) so as to form a front edge of the lateral wall 252, and a bulge that bulges upward from the fold line as a boundary And a raised portion 254.

The lateral wall 252 and the raised portion 254 of the bracket 205 formed to extend forward from the lateral member main body 206A1 side constitute an “extending portion” in the claims.

The vertical wall 251 is formed in a substantially corrugated plate shape in which concave portions and convex portions are alternately arranged in the vehicle width direction. The vertical wall 251 is coupled to the front wall 261 at a portion in contact with the front wall 261 (see FIG. 26C) of the horizontal member main body 206A1 (see FIG. 26C).

The horizontal wall 252 is disposed along the lower surface of the front flange 263 (see FIG. 26C) of the horizontal member main body 206A1 (see FIG. 26C).

A recess 255 is formed at the center of the raised portion 254. As shown in FIG. 26A, the recess 255 is recessed above the bracket 205, and protrudes below the bracket 205 as shown in FIG.

As shown in FIG. 26 (c), a mount M is disposed in the recess 255. In FIGS. 26A and 26B, reference numeral 256 denotes a bolt insertion hole for mounting the mount M (FIG. 26C) in the recess 255.

As shown in FIGS. 26 (a) and 26 (b), the bracket 205 is formed with a first bead 256a and a second bead 256b.
The first bead 256 a is formed on the raised portion 254. The first bead 256a protrudes above the bracket 205 as shown in FIG. 26 (a), and is recessed below the bracket 205 as shown in FIG. 26 (b).

The first bead 256a is formed to extend obliquely rearward from the concave portion 255 side. The first bead 256 a extends backward to the broken line 253, and the rear end portion of the first bead 256 a intersects the broken line 253.

The second bead 256 b is formed on the horizontal wall 252. The second bead 256b is recessed at the upper side of the bracket 205 as shown in FIG. 26 (a), and protrudes at the lower side of the bracket 205 as shown in FIG. 26 (b).
The second bead 256b is formed to extend in the vehicle front-rear direction at the approximate center of the lateral wall 252 in the vehicle width direction. The second bead 256b extends forward to the broken line 253 with the vertical wall 251 side as the base end, and the front end of the second bead 256b intersects the broken line 253.

As described above, the first bead 256a and the second bead 256b are formed so as to protrude in directions opposite to each other. The first bead 256a and the second bead 256b are formed on opposite sides of the broken line 253 except for the intersecting portion (joint portion) with the broken line 253, and are formed so as not to intersect each other. Yes.

Further, the bracket 205 has a pair of left and right bent flanges (bending flanges) 257 and 257. The bent flange 257 extends in the vehicle front-rear direction on both sides of the lateral wall 252 and the raised portion 254 in the vehicle width direction. In other words, the bent flange 257 continuously extends from the lateral wall 252 to the raised portion 254.

The bent flange 257 formed on the lateral wall 252 that overlaps the front flange 263 (see FIG. 26C) of the lateral member main body 206A1 (see FIG. 26C) is not shown, but the second bead 256b is omitted. (See FIGS. 26 (a) and 26 (b)) partially overlaps in the vehicle width direction.

Such a bent flange 257 is formed such that the left and right edges of the lateral wall 252 and the raised portion 254 are bent downward.

Next, the connection structure of the bracket 205 to the front bulkhead 206 will be described.

As shown in FIG. 27, when viewed from the front of the vehicle body, the vertical wall 251 of the bracket 205 has three welding points (joining portions) W1, W2 in the vehicle width direction with respect to the front wall 261 of the horizontal member main body 206A1. W3.
The welding point W1 assumes two-spot welding (two-layer welding). Specifically, as shown in FIG. 23A, the bracket 205 and the front wall 261 of the lateral member main body 206A1 are overlapped and welded.

The welding point W2 is assumed to be three-spot welding (three-layer welding). Specifically, as shown in FIG. 23B, the bracket 205, the front wall 261 of the lateral member main body 206A1, and the front flange 283 of the reinforcing member 280 are overlapped and welded.

溶接 Welding point W3 assumes two-spot welding. Specifically, although not shown, the bracket 205 and the front wall 261 of the lateral member main body 206A1 are overlapped and welded. Incidentally, a gap is formed between the front wall 261 and the flange 283 to avoid the connection between the front wall 261 and the flange 283.

Further, the lateral wall 252 of the bracket 205 has four welding points W4, W5, W6, and W7 (joint portions) in the vehicle width direction with respect to the front flange portion 261 of the lateral member main body 206A1.
The welding points W4 and W5 are assumed to be three-spot welding. Specifically, as shown in FIG. 23A, the bracket 205, the front flange portion 263 of the lateral member main body 206A1, and the lid front flange portion 268 of the lid member 206A2 are overlapped and welded.

The welding point W6 assumes three-spot welding. Specifically, as shown in FIG. 23B, the bracket 205, the front flange portion 263 of the horizontal member main body 206A1, and the flange 274 of the vertical member 206B are overlapped and welded.
The welding point W7 assumes two-spot welding. Specifically, although not shown, the bracket 205 and the front flange portion 263 of the lateral member main body 206A1 are overlapped and welded.

These welding points W1 to W7 are set so as to be distributed in the vehicle width direction with the second inner wall 224 at the lower end of the vertical member 206B as a boundary in the front view of the vehicle body.
Specifically, the welding points W1, W4, and W5 (joint portions) are set on the inner side in the vehicle width direction around the second inner wall 224, and the weld points W2, W3, W6, and W7 (joint portions) are It is set outside in the vehicle width direction.

Next, functions and effects exhibited by the cooling device mounting structure S of the third embodiment will be described.

As shown in FIG. 23B, in the cooling device mounting structure S as described above, the lower end portion of the vertical member 206B extends within the hat cross section of the upward opening of the horizontal member main body 206A1, and the reinforcing member 280 is interposed therebetween. It is coupled to the front wall 261 of the lateral member 206A.
In addition, the bracket 205 is coupled to the front flange portion 263 (the flange portion) of the lateral member 206B and is coupled to the reinforcing member 280 via the front wall 261.

Further, as shown in FIG. 27, the connecting portion of the bracket 205 to the front flange portion 263 is formed inside and outside in the vehicle width direction around the second inner wall 224 of the vertical member 206B.

According to such a cooling device mounting structure S, it is possible to increase the coupling strength at the corner where the horizontal member 206A and the vertical member 206B intersect.
As a result, the cooling device mounting structure S can suppress the torsional deformation that occurs at the corners when the front end portion of the front side frame 202 is displaced up and down, and can improve the running stability of the vehicle.

Further, according to this cooling device mounting structure S, the support stability of the mounted intercooler 208 (cooling device) is excellent, and it is possible to prevent the vibration and noise generated due to the intercooler 208 from propagating to the passenger compartment. it can.

Moreover, as shown in FIG.23 (b), in the cooling device attachment structure S of 3rd Embodiment, the 2nd board part 282 which comprises the upper part of the reinforcement member 280, the front flange 283, and the rear flange 284 are as follows. The second inner side wall 224 of the vertical member 26B, the front wall 261 of the horizontal member 206A, and the second rear side wall 223 of the vertical member 206B are coupled to each other.

Further, as shown in FIG. 22, the first plate portion 281 constituting the lower portion of the reinforcing member 280 is sandwiched between the bottom wall 260 of the horizontal member 204A and the flange 276 of the vertical member 206A.

According to such a cooling device mounting structure S, it is possible to further increase the coupling strength at the corner where the horizontal member 206A and the vertical member 206B intersect.
Moreover, according to such a cooling device attachment structure S, since the reinforcing member 280 can be easily manufactured by press molding or the like, the manufacturing process can be simplified.

Further, as shown in FIGS. 26 (a) to 26 (c), the bracket 205 in the cooling device mounting structure S of the third embodiment is arranged on both sides of the lateral wall 252 and the raised portion 254 in the vehicle width direction on the front and rear sides of the vehicle. It has a bent flange 257 extending in the direction.

The bracket 205 of such a cooling device mounting structure S further enhances the support rigidity of the intercooler 208. Therefore, it is possible to more effectively prevent the vibration and noise generated due to the intercooler 208 from propagating to the passenger compartment.

Also, the bracket 205 in the cooling device mounting structure S of the third embodiment has a first bead 256a formed on the raised portion 254 and a second bead 256b formed on the lateral wall 252.

As shown in FIG. 26 (c), according to the bracket 205 of the cooling device mounting structure S as described above, even if the concave portion 255 in which the mount M is disposed is formed on the raised portion 254, the intercooler 208 (see FIG. 20) can be formed. Sufficient support strength can be exhibited.
Further, the bracket 205 includes the first bead 256a and the second bead 256b, so that the rigidity and strength of the bracket 205 can be further increased.

Further, in the cooling device mounting structure S of the third embodiment, as shown in FIG. 23 (a), the bracket 205 is provided between the front flange 263 of the lateral member 206A and the lid front flange 268 of the lid member 206A2. They are welded together in three layers.

Further, as shown in FIG. 23B, the bracket 205 is coupled in a three-ply manner by sandwiching the front flange 263 of the horizontal member body 206A1 with the flange 274 (lower end flange) of the vertical member 206B. Has been.

According to such a cooling device mounting structure S, the support strength for the intercooler 208 (see FIG. 20) can be improved while further increasing the coupling strength between the horizontal member 206A and the vertical member 206B.

In the cooling device mounting structure S of the third embodiment, the bracket 205 supports the intercooler 208 as shown in FIG.
Further, the cooling device mounting structure S of the third embodiment supports the lower portion of the radiator 209 (see FIG. 20) with a lid member 206A2 shown in FIG.

According to such a cooling device mounting structure S, the space efficiency of the intercooler 208 and the radiator 209 can be improved, and the supporting strength of them can be improved.

Further, in the cooling device mounting structure S of the third embodiment, as shown in FIG. 22, the lower end portion of the vertical member 206B protrudes forward.
As shown in FIG. 20, the upper portion of the radiator 209 is supported by a radiator support bracket 209a (upper bracket).

In such a cooling device mounting structure S, the lower member of the vertical member 206B protrudes forward so that the horizontal member 206A can be shifted forward. The upper portion of the radiator 209 is supported by the radiator support bracket 209a extending forward, so that the radiator 209 can be shifted forward and supported by the front bulkhead 206.

According to such a cooling device mounting structure S, it is possible to secure a component arrangement space behind the front bulkhead 206.

In the cooling device mounting structure S of the present embodiment, as shown in FIG. 21, the intercooler 208 is fixed via a bracket 205 (intercooler bracket).
Further, the ventilation hose 232 (pipe) extending from the intercooler 208 extends from the hose connecting portion 208b side toward the lower end side of the vertical member 206B, and thereafter, at the lower end portion of the vertical member 206B as shown in FIG. The direction is changed from the outside in the vehicle width direction to the inside in the vehicle width direction and extends toward the front side frame 202 side.

According to such a cooling device mounting structure S, the periphery of the intercooler 208 can be configured more compactly.

Although the third embodiment of the present invention has been described above, the present invention is not limited to the third embodiment and can be implemented in various forms.
For example, in the third embodiment, the cooling device mounting structure S that supports the intercooler 208 as a cooling device has been described. However, the cooling device mounting structure S is not limited to a turbo car that includes the cooling device mounting structure S.

Therefore, the cooling device is not limited to the intercooler 208, but can be an evaporator of an air conditioner or, of course, a radiator 209.

In the present invention, the first to third embodiments are individually described for each embodiment. However, the structures shown in the first to third embodiments may be appropriately combined.

DESCRIPTION OF SYMBOLS 10 Car body front part 18 Front bulkhead 20 Ground guard

20a Upper wall

20b Front wall

20c Lower wall 24 Vertical member 28 Lower cross member 29a Front side flange 29c Bottom face part 34 Front obstacle detection sensor 36 Step part 38 Step flange part 40 Access hole 42 Car body joint portion 44 Escape portion 46 First stay 48 Second stay 52 Guide member 54 Guide surface 56 Recess 68 Lid member 101 Car body front portion 102 Front side frame 103 Subframe support portion 105 Bumper beam assembly 105A Bumper beam extension 105B Mounting plate 105Ba Opening 105Bb Fitting rib 105Bc Upper edge 105C Bumper beam 106 Front bulkhead 106B Vertical member 107 Connection block Over preparative 107a bent flange portion 110 front member (second L-shaped cross-sectional member)
119 Recess 120 Rear member (first L-shaped cross-section member)
125 mounting extension wall 126 first hook piece 126b first vertical surface 126c first deflection surface 127 second hook piece 127b second vertical surface 127c second deflection surface 130 vertical member main body 140 lower fixing portion 150 upper coupling portion 201 front of vehicle body Part 202 Front side frame 203 Subframe support part 204 Subframe 205 Bracket 206 Front bulkhead 206A Horizontal member 206A1 Horizontal member body 206A2 Lid member 206B Vertical member 207 Connection plate 210 Front side member 210A Front side upper member 210B Front side middle member 210C Front side lower member 211 1st front wall part 212 1st outer side wall 215 2nd front wall part 216 2nd outer side wall 220 Rear side member 220A Rear side upper member 220B Rear side lower member 22 The first rear side wall 222 first inner wall 223 second back side wall 224 second inner wall 230 vertical member main body 240 under the fixing portion 263 before the flange portion (brim portion)
271 Third front wall portion 272 Third outer wall 274 Flange (lower end flange)
280 Reinforcing member 281 First plate (lower part of reinforcing member)
282 Second plate (upper part of reinforcing member)
283 Front flange (upper part of reinforcing member)
284 Rear flange (upper part of reinforcing member)

Claims

With a grounding guard attached to the lower cross member of the front bulkhead,
The grounding guard has an upper wall, a front wall, and a lower wall whose dimension in the vehicle front-rear direction is longer than the upper wall,
The upper wall and the lower wall extend in parallel to face each other,
The front wall is substantially orthogonal to the upper wall and the lower wall, and connects the vehicle front end portion of the upper wall and the vehicle front end portion of the lower wall, respectively.
The lower cross member has a hat cross-sectional shape opening upward, and has at least a front flange portion and a bottom portion,
Fixing the upper wall to the front flange portion of the lower cross member, and fixing the lower wall to the bottom surface portion;
A front vehicle body structure in which a front obstacle detection sensor is attached to the front wall.
The vehicle body front part structure according to claim 1,
A pair of left and right front side frames extending in the longitudinal direction of the vehicle;
A front bulkhead having a pair of left and right vertical members fixed to the front end of the front side frame and extending vertically.
Each vertical member is
A vertical member body;
A mounting extension wall extending outward in the vehicle width direction from the vehicle width direction outer end of the vertical member body;
A first hook piece that is bent rearward from the vehicle width direction outer side end portion of the mounting extension wall, and is hooked and engaged with the front side frame from above.
The first hook piece is
A first vertical surface extending vertically,
A vehicle body front part structure including a first deflection surface that is continuous with one of the upper and lower sides of the first vertical surface and is inclined with respect to the vertical direction.
The vehicle body front part structure according to claim 1,
A bracket that extends forward from the front bulkhead fixed to the front end of the front side frame and supports a cooling device;
The front bulkhead is formed into a rectangle by a pair of left and right vertical members and a pair of upper and lower horizontal members,
The lower horizontal member of the pair of horizontal members has a hat cross section with an upward opening,
The lower end of the inner wall of the vertical member extends into the hat cross-section through the upward opening, and is coupled to the front wall of the horizontal member in the horizontal member through a reinforcing member,
The bracket is coupled to the flange portion that forms the hat cross section of the lateral member, and is coupled to the reinforcing member via the front wall of the lateral member,
The joint portion of the bracket with respect to the flange portion is a vehicle body front structure that is formed inside and outside in the vehicle width direction centering on the inner wall in a front view of the vehicle body.
The vehicle body front part structure according to claim 1,
The grounding guard mounting structure, wherein the grounding guard includes a step flange portion having at least a step portion continuing from the front wall to the lower wall.
The vehicle body front part structure according to claim 1,
A vehicle body front structure in which an escape portion for discharging the electrodeposition coating liquid is formed on the upper wall and the lower wall.
The vehicle body front part structure according to claim 1,
The vehicle body front structure, wherein the grounding guard includes a vehicle body joint portion that fixes the front obstacle detection sensor to a central portion in the vehicle width direction.
The vehicle body front part structure according to claim 6,
A vehicle body front structure, wherein an access hole of a welding gun for forming the vehicle body joint portion on the upper wall side is formed in the lower wall.
The vehicle body front part structure according to claim 1,
The front bulkhead has a pair of left and right vertical members,
The front obstacle detection sensor is arranged at the center in the vehicle width direction,
The upper part of the front obstacle detection sensor is fixed to the pair of left and right vertical members via a first stay extending in the vehicle width direction, and the lower part is a second stay extending in the vehicle front-rear direction. A vehicle body front part structure fixed to the grounding guard via
The vehicle body front part structure according to claim 1,
A guide member is arranged in front of the front bulkhead in the vehicle,
A vehicle body front part structure in which a concave portion into which a second stay extending in the vehicle front-rear direction is fitted by recessing a guide surface of the guide member is formed.
The vehicle body front structure according to claim 9,
A vehicle body front part structure in which a lid member that covers the recess and forms the guide surface is disposed.
The vehicle body front structure according to claim 2,
A bumper beam assembly extending in the vehicle width direction and provided between the front end portions of the pair of left and right front side frames,
The vertical member is bent forward from the vehicle width direction outer side end portion of the mounting extension wall below the first hook piece, and is hooked from below and engaged with the bumper beam assembly. Have
The second hook piece is
A second vertical surface extending vertically,
A vehicle body front part structure comprising: a second deflection surface that is continuous with the upper and lower sides of the second vertical surface and is inclined with respect to the vertical direction.
The vehicle body front structure according to claim 11,
A connection plate that is fixed to the front end of the front side frame and connects the front side frame and the bumper beam assembly to each other;
On the upper edge of the connecting plate, a bent flange portion bent backward is formed,
The vehicle body front structure, wherein the first hook piece engages with the bent flange portion.
The vehicle body front structure according to claim 12,
The bumper beam assembly is
A pair of left and right cylindrical bumper beam extensions attached to the front end of each front side frame and opening in the front-rear direction;
A pair of left and right mounting plates fixed to the rear end of each of the bumper beam extensions,
The mounting plate is
An opening facing the inside of the bumper beam extension;
A pair of upper and lower fitting ribs protruding forward at the upper and lower sides of the opening, and fitted with a rear end portion of the bumper beam extension;
The vehicle body front structure, wherein the second hook piece engages with an upper edge of the opening.
The vehicle body front part structure according to claim 13,
A coupling portion in which the mounting extension wall, the connecting plate, and the mounting plate are coupled;
The vehicle body front structure according to claim 1, wherein the coupling portion is formed between the first hook piece and the second hook piece.
The vehicle body front structure according to claim 2,
A subframe support portion extending downward from the front portion of the front side frame;
The first hook piece to which the vertical member and the front side frame are temporarily fixed;
A vehicle body front structure comprising: a lower fixing portion to which the vertical member and the sub-frame support portion are temporarily fixed below the first hook piece.
The vehicle body front structure according to claim 14,
The vertical member body has a recess recessed inward in the vehicle width direction over a predetermined region in the vertical direction from a position below the first hook piece,
The vehicle body front structure, wherein the second hooking piece and the coupling portion are formed on the outer side in the vehicle width direction with respect to the recess.
The vehicle body front part structure according to claim 15,
The vertical member main body includes a first L-shaped cross-section member that forms an inner wall and a rear wall, and a second L-shaped cross-section member that forms an outer wall and a front wall. Formed,
The mounting extension wall is formed by extending either one of the first L-shaped cross-section member and the second L-shaped cross-section member toward the outside in the vehicle width direction than the other. .
In the vehicle body front structure according to claim 3,
The vertical member has a first L-shaped cross-section member forming the inner side wall and a rear side wall facing rearward, and a second L-shape forming a front wall facing the front side and an outer wall facing the inner side wall. The cross-sectional member is configured to be joined so as to form a hollow portion inside,
The lower end portion of the rear side wall and the lower end portion of the outer side wall extend into the horizontal member through the upward opening, and a bottom wall constituting the hat cross section of the side member at the lower edge of the outer side wall A flange is formed along
The reinforcing member includes a lower portion disposed along the bottom wall of the horizontal member, the inner wall and the rear wall of the vertical member, and the lower portion along the front wall of the horizontal member. And an upper part rising from the edge of the
The upper part of the reinforcing member is coupled to each of the inner and rear side walls of the vertical member and the front wall of the lateral member;
The lower part of the reinforcing member extends between the flange of the outer wall and the bottom wall of the side member, and is sandwiched between the flange and the bottom wall. Construction.
In the vehicle body front structure according to claim 3,
The vehicle body front structure according to claim 1, wherein the bracket has bent flanges extending in the vehicle front-rear direction on both sides of the extending portion extending forward from the lateral member.
In the vehicle body front structure according to claim 3,
The bracket has a mounting portion that supports a lower portion of the cooling device,
The mounting portion is formed so as to protrude upward from a broken line that crosses in the vehicle width direction in the middle of extending forward from the lateral member,
A first bead protruding upward is formed on the raised portion forming the mounting portion,
A second bead that is recessed downward is formed on the opposite side of the mounting portion across the broken line so as to extend in the vehicle front-rear direction.
The vehicle body front part structure, wherein the first bead and the second bead extend so as not to cross each other.
In the vehicle body front structure according to claim 3,
The lateral member further includes a lid member arranged to close the upward opening of the hat cross section from above,
At the lower end of the front wall facing the front of the vertical member, a lower end flange is formed,
The bracket is joined in a three-ply manner with the flange portion of the horizontal member sandwiched between the lid member and the bracket portion of the horizontal member sandwiched between the lower end flange. A vehicle body front structure characterized by being connected to each other in three layers.
In the vehicle body front structure according to claim 3,
The lateral member further includes a lid member arranged to close the upward opening of the hat cross section from above,
The vehicle body front structure, wherein the bracket supports an intercooler, and the lid member supports a radiator.
In the vehicle body front structure according to claim 3,
The vertical member has a lower end projecting forward,
The lateral member further includes a lid member arranged to close the upward opening of the hat cross section from above,
The lid member supports the lower part of the radiator,
An upper bracket extending forward is disposed on the upper horizontal member of the pair of horizontal members,
The vehicle body front structure, wherein the upper bracket supports an upper portion of the radiator.
The vehicle body front part structure according to claim 22,
An upper portion of the intercooler is fixed to the vertical member via a support member, and a pipe extending from the intercooler extends toward the front side frame side through the outer side in the vehicle width direction at the lower end portion of the vertical member. The vehicle body front part structure characterized by being arranged like this.