CN115071837B - Front structure of vehicle body - Google Patents

Front structure of vehicle body Download PDF

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Publication number
CN115071837B
CN115071837B CN202210116748.2A CN202210116748A CN115071837B CN 115071837 B CN115071837 B CN 115071837B CN 202210116748 A CN202210116748 A CN 202210116748A CN 115071837 B CN115071837 B CN 115071837B
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CN
China
Prior art keywords
bumper
base
fixing portion
vehicle body
vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
CN202210116748.2A
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Chinese (zh)
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CN115071837A (en
Inventor
堀井勇希
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
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Honda Motor Co Ltd
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Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of CN115071837A publication Critical patent/CN115071837A/en
Application granted granted Critical
Publication of CN115071837B publication Critical patent/CN115071837B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D25/00Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08Front or rear portions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/24Arrangements for mounting bumpers on vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/48Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
    • B60R19/483Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds with obstacle sensors of electric or electronic type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/52Radiator or grille guards ; Radiator grilles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/52Radiator or grille guards ; Radiator grilles
    • B60R2019/525Radiator grilles
    • B60R2019/527Radiator grilles integral with bumpers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention provides a vehicle body front structure. The vehicle body front structure includes a base, a first bumper bracket, and a second bumper bracket. The base has a base front surface and a base upper surface supported on an upper portion of the front bulkhead. The first bumper bracket and the second bumper bracket are supported on the base and the front bulkhead, and are used for fixing the front face of the front bumper. The first bumper bracket and the second bumper bracket have front fixing portions, rear upper fixing portions, and rear lower fixing portions disposed at respective apexes of the triangle.

Description

Front structure of vehicle body
The present application claims priority based on japanese patent application No. 2021-042630 filed on 3/16 of 2021, the contents of which are incorporated herein by reference.
Technical Field
The present invention relates to a vehicle body front structure.
Background
As a vehicle body front structure, for example, the following structure is known: the left and right front side frames are provided with bumper beams, and the support pieces support the grille brackets from the bumpers Liang Liqi by the support pieces standing up. The grille bracket is a constituent member of a front face (bumper face) of the bumper. Therefore, by supporting the grille bracket with the support piece, sagging of the front face of the bumper can be suppressed, for example (for example, refer to japanese patent No. 6304202).
Disclosure of Invention
However, the bumper beam is generally disposed between a front bumper face and a front bulkhead (front bulk head) in the vehicle body front-rear direction. Therefore, the support piece of the slave bumper Liang Liqi is also disposed between the bumper face and the front bulkhead. Therefore, it is difficult to secure a mounting space for mounting a vehicle-mounted component such as a radar device and a grille shutter between the front surface of the bumper and the dash panel.
The invention provides a vehicle body front structure, which can easily ensure the mounting space of vehicle-mounted components such as a radar device, a grille shutter and the like between the front face of a bumper and a front baffle plate, and can restrain the sagging of the front face of the bumper.
The scheme of the invention provides the following means.
(1) The vehicle body front structure of the present invention is a vehicle body front structure provided with a bumper front surface at a front portion of a vehicle body and a front bulkhead at a vehicle body rear of the bumper front surface, and includes: a base supported on an upper portion of the dash panel and having a base front surface portion disposed toward a front of a vehicle body and a base upper surface portion provided on an upper end of the base front surface portion; and a bumper bracket supported by the base and the front panel and configured to fix the front face of the bumper, the bumper bracket including: a front fixing portion for fixing the front face of the bumper; a rear upper fixing portion disposed behind the front fixing portion and provided on the base upper surface portion; and a rear lower fixing portion disposed below the rear upper fixing portion and disposed on the base front surface portion, the front fixing portion, the rear upper fixing portion, and the rear lower fixing portion being disposed on respective vertexes of a triangle.
According to the structure of the above (1), the bumper bracket for fixing the front face of the bumper is provided at the base and the front panel. The bumper stay includes a front fixing portion, a rear upper fixing portion, and a rear lower fixing portion. The front surface of the bumper is fixed by the front fixing portion. The rear upper fixing portion is disposed behind the front fixing portion and is provided on the base upper surface portion. The rear lower fixing portion is disposed below the rear upper fixing portion and is provided on the abutment front surface portion. In addition, the front fixing portion, the rear upper fixing portion, and the rear lower fixing portion are disposed at the respective apexes of the triangle.
In addition, by providing the front bumper face at the front fixing portion, the weight (load) of the front bumper face acts downward on the front fixing portion. Accordingly, the load acting on the front fixing portion is dispersed (converted) into a tensile load acting on the rear upper fixing portion and a compressive load acting on the rear lower fixing portion.
The rear lower fixing portion is provided on the abutment front portion (i.e., abutment). The base is supported by the front bulkhead. The dash panel is a member having high strength and rigidity that forms a part of the vehicle body frame. Therefore, the compressive load acting on the rear lower fixing portion can be reliably supported by the base (i.e., the dash panel).
On the other hand, the rear upper fixing portion is provided on the abutment upper surface portion (i.e., abutment). Accordingly, the tensile load acting on the rear upper fixing portion can be supported by the base (i.e., the dash panel).
Accordingly, the weight of the front face of the bumper can be supported by the bumper stay, and sagging of the front face of the bumper can be suppressed.
Here, a base is supported on an upper portion of the front bulkhead, and a bumper stay is supported on the base. Therefore, the bumper stay can be disposed above the space between the front face of the bumper and the dash panel. This makes it possible to easily secure a mounting space for mounting a vehicle-mounted component such as a radar device or a grille shutter between the front surface of the bumper and the dash panel.
(2) In the aspect (1), the width of the bumper stay in the height direction may gradually increase from the front fixing portion toward the rear of the vehicle body where the front bulkhead is disposed.
According to the configuration of the above (2), the width of the bumper stay in the height direction is gradually increased from the front fixing portion toward the rear of the vehicle body. Therefore, for example, the lower edge connecting the front fixing portion and the rear lower fixing portion can be extended downward toward the rear of the vehicle body. In this way, in a state where the load on the front surface of the bumper acts on the front fixing portion, a part of the load acting on the front fixing portion can be easily dispersed (converted) into a compressive load acting in a direction in which the rear lower fixing portion presses the front surface portion of the abutment. Therefore, the compressive load can be easily transmitted to the dash panel and supported, and sagging of the front surface of the bumper can be further satisfactorily suppressed.
(3) In addition to the aspect (1), the bumper stay may include: an upper face portion having the front fixing portion; a side surface portion extending downward from the upper surface portion; and a ridge portion formed by a portion where the upper surface portion and the side surface portion intersect, the ridge portion having a recessed portion.
According to the configuration of the above (3), the ridge line portion is formed at the crossing portion of the upper surface portion and the side surface portion of the bumper stay. Further, a concave portion is formed in the ridge portion. Therefore, the strength of the bumper stay itself can be improved by the concave portion, and deformation of the upper surface portion toward the side surface portion with the ridge line portion as a boundary can be suppressed, for example. Thus, the load applied to the front fixing portion from the front face of the bumper can be strongly received by the bumper stay, and the load applied to the front fixing portion can be supported by the bumper stay.
(4) In the aspect (1), the rear upper fixing portion may be disposed so as to overlap the abutment upper surface portion, and the upper surface portion of the bumper stay may have a stepped portion that is inclined downward from the front fixing portion toward the rear upper fixing portion, in addition to the front fixing portion and the rear upper fixing portion.
According to the configuration of the aspect (4), the bumper stay has the front fixing portion, the rear upper fixing portion, and the stepped portion on the upper portion. The rear upper fixing part is arranged to overlap with the upper surface part of the base and the front baffle plate. The step portion extends so as to incline downward from the front fixing portion toward the rear upper fixing portion. Therefore, the rigidity of the bumper stay can be improved by improving the rigidity (particularly, the face rigidity) of the upper face portion. This makes it possible to easily transmit the load acting on the front fixing portion from the front face of the bumper to the base via the bumper stay, and further to satisfactorily suppress sagging of the front face of the bumper.
(5) In the aspect (1), the base may be an upper stiffener which is disposed at the rear portion of the bumper stay and is formed in a コ shape so as to sandwich the front protruding portion from the up-down direction in a state in which the base front surface portion is opposed to the front protruding portion of the front bulkhead, and the base may extend across the pair of longitudinal legs of the front bulkhead.
According to the configuration of the aspect (5), the base is formed in the shape of コ, whereby the front protruding portion of the front bulkhead can be sandwiched by the base from the up-down direction. Therefore, the rigidity of the base can be improved, and the base can function as an upper stiffener (i.e., a reinforcing member). Further, the base frame is provided on a pair of longitudinal leg portions of the front bulkhead. Therefore, the base can be firmly supported by the dash panel in a state of being disposed on the vehicle body front side of the dash panel. A bumper bracket is mounted on the base. Thus, the bumper stay can be firmly fixed to the base in a state of being disposed from the base toward the front of the vehicle body.
Here, for example, consider a case where the front surface of the bumper is disposed so as to be relatively large apart from the dash panel toward the front side of the vehicle body. In this case, by disposing the base in front of the vehicle body of the dash panel, the length of the bumper stay in the vehicle body longitudinal direction can be suppressed. Thus, the front face of the bumper can be firmly supported by the bumper stay.
Further, the front protruding portion of the front bulkhead is sandwiched by the base from the up-down direction, and the base is attached to the pair of vertical leg portions of the front bulkhead. Therefore, the dash panel can be reinforced by the base.
Here, consider a case where, for example, only one wheel is stepped up during running of the vehicle, and a load in the torsion direction is input to the dash panel. In this case, the rigidity of the dash panel against the load in the torsion direction can be improved by the base (i.e., the upper reinforcement).
(6) In the aspect (5), the front bulkhead may further include a cross member extending across the pair of vertical legs and having the front protruding portion, and the base may include a lower connecting portion fixed to the pair of vertical legs at a position lower than the cross member.
According to the configuration of the above (6), the front protruding portion of the cross member is sandwiched by the base. The lower connecting portion of the base is fixed to the pair of vertical leg portions at a position lower than the cross member. Thus, the base can also improve the rigidity of the dash panel against a load that bends the pair of vertical leg portions in a V-shape (V-shape) outward in the vehicle width direction, for example.
(7) In the aspect (5), the vehicle body front structure may include a duct that is provided in front of the vehicle body of the dash panel and that guides outside air to the dash panel side, and the duct may be fixed to the base and the bumper stay.
According to the configuration of the above (7), the duct is provided in front of the vehicle body of the front bulkhead, and the duct is fixed to both the base and the bumper stay. Therefore, the duct can be firmly supported by both the base and the bumper stay. Thus, even when the duct is formed of resin, the duct is less susceptible to vibration during running of the vehicle, for example, and the duct-formed air passage is less susceptible to influence.
(8) In the aspect (1) above, the vehicle body front structure may include a center roof rail that supports an upper flange on the front surface of the bumper, and the center roof rail may be fixed to the front fixing portion of the bumper stay.
According to the configuration of the above (8), the upper flange on the front surface of the bumper is supported by the center sill, and the center sill is fixed to the fixing portion of the bumper stay. Thus, the upper flange can be horizontally extended in the vehicle width direction, and the shape of the upper flange can be simplified.
(9) In the aspect (1), the base may have a concave portion formed so as to be concave downward at a center in the vehicle width direction.
Here, for example, a hood lock mechanism is provided at a center portion in the vehicle width direction in the cross member. Then, a concave portion is formed in the center of the base in the vehicle width direction. Accordingly, the recess 36 is disposed in front of the vehicle body of the hood lock mechanism.
Thereby, a space for operating a lock release lever (not shown) for releasing the lock of the hood lock mechanism can be secured between the recess of the base and the hood. The hood can be opened by unlocking the hood lock mechanism with the lock release lever.
(10) In the aspect (9), the front fixing portion of the bumper stay may be disposed at a position higher than the rear upper fixing portion in the up-down direction.
According to the configuration of the aspect (10), the front fixing portion of the bumper stay is arranged at a position higher than the rear upper fixing portion in the up-down direction. Therefore, for example, when a plurality of bumper brackets are provided on the base at intervals in the vehicle width direction, the front fixing portions of the bumper brackets provided at the lower positions of the upper surface portion of the base can be arranged at the same height as the front fixing portions of the other bumper brackets.
Thus, the front fixing portions of the plurality of bumper brackets provided on the base can be horizontally arranged in the vehicle width direction, and the front face of the bumper can be fixed with high accuracy.
According to the aspect of the present invention, the mounting space for the vehicle-mounted components such as the radar device and the grille shutter can be easily secured between the front face of the bumper and the front bulkhead, and sagging of the front face of the bumper can be suppressed.
Drawings
Fig. 1 is an exploded perspective view showing a vehicle body front structure according to an embodiment of the present invention.
Fig. 2 is a perspective view of a vehicle body front structure according to an embodiment, as viewed from above a vehicle body front.
Fig. 3 is a perspective view showing main components included in the vehicle body front structure according to the embodiment.
Fig. 4 is a cross-sectional view showing a first bulkhead bracket (bulk stand) provided in a vehicle body front structure according to an embodiment, as viewed from a side in front of the vehicle body.
Fig. 5 is a cross-sectional view showing a first bulkhead holder provided in a vehicle body front structure according to an embodiment, in a state seen from a side.
Fig. 6 is a cross-sectional view showing a first bulkhead holder provided in a vehicle body front structure according to an embodiment in a cut-away state.
Fig. 7 is a cross-sectional view showing a second bulkhead holder provided in a vehicle body front structure according to an embodiment, as viewed from a side in front of the vehicle body.
Fig. 8 is a perspective view of the second bulkhead bracket provided in the vehicle body front portion structure according to the embodiment, as seen from the side of the vehicle body front portion.
Fig. 9 is a cross-sectional view showing a second bulkhead bracket provided in a vehicle body front structure according to an embodiment, in a state seen from a side.
Fig. 10 is a cross-sectional view showing a duct, a damper grille, and a radar device provided in a vehicle body front structure according to an embodiment.
Detailed Description
Hereinafter, a vehicle body front structure 10 according to an embodiment of the present invention will be described with reference to the drawings. In the drawing, arrow FR indicates the front of the vehicle, arrow UP indicates the upper side of the vehicle, and arrow LH indicates the left side of the vehicle. The application, type, etc. of the vehicle are not particularly limited, and an automobile will be described as an example of an embodiment.
< vehicle >
As shown in fig. 1 and 2, the vehicle Ve includes a vehicle body front structure 10 provided in front of a vehicle body of an engine room, for example. The vehicle body front structure 10 includes, for example, a front bulkhead 12, a base 13, a plurality of (left and right in the embodiment) first bumper brackets (bumper brackets) 14, a plurality of (left and right in the embodiment) second bumper brackets (bumper brackets) 15, a center roof rail 16, a front bumper face (bumper face) 17, and a front grille 18.
In the following, in the embodiment, the left and right first bumper brackets 14, 14 are illustrated as a plurality of first bumper brackets, and the left and right second bumper brackets 15, 15 are illustrated as a plurality of second bumper brackets, but the number of the first bumper brackets 14, 15 can be arbitrarily selected.
< front baffle >)
As shown in fig. 2 and 3, the dash panel 12 is provided in front of the vehicle body of the engine room and behind the vehicle body of the front bumper face 17. The front bulkhead 12 includes, for example, left and right longitudinal legs (a pair of longitudinal legs) 22, a lower cross member (not shown), and an upper cross member (cross member) 23.
The lower cross member extends in the vehicle width direction at a front lower portion of the vehicle body. The left vertical leg 22 stands up from the left end of the lower cross member, and the right vertical leg 22 stands up from the right end of the lower cross member. The upper cross member 23 is erected on the upper end 22a of the left vertical leg 22 and the upper end 22a of the right vertical leg 22.
That is, the dash panel 12 is formed into a rectangular frame shape in plan view by the lower cross member, the left and right longitudinal leg portions 22, and the upper cross member 23. The dash panel 12 is a member having high strength and rigidity that forms a part of the vehicle body frame.
The upper cross member 23 extends across the upper end 22a of the left longitudinal leg 22 and the upper end 22a of the right longitudinal leg 22. The upper cross member 23 has a left front protruding portion (front protruding portion) 24 and a right front protruding portion (front protruding portion) 25. The left front projection 24 projects toward the front of the vehicle body from a position on the left side of the center of the upper cross member 23. The right front protruding portion 25 protrudes toward the front of the vehicle body from a position on the right side of the center of the upper cross member 23.
The base 13 is supported on the upper portion of the front bulkhead 12 (i.e., the upper cross member 23, the upper end 22a of the left vertical leg 22, and the upper end 22a of the right vertical leg 22).
< base station >)
The base 13 is disposed in a state of being disposed at the rear portions of the left and right first bumper brackets 14, 14 and the rear portions of the left and right second bumper brackets 15, 15. The base 13 extends in the vehicle width direction across the upper end 22a of the left vertical leg 22 and the upper end 22a of the right vertical leg 22 by being provided to the upper end 22a of the left vertical leg 22 and the upper end 22a of the right vertical leg 22.
The base 13 is also provided at the left end 23a and the right end 23b of the upper cross member 23, and extends in the vehicle width direction across the left end 23a and the right end 23b of the upper cross member 23. In this state, the base 13 extends along the upper cross member 23 in the vehicle width direction.
The base 13 has a base front surface 31, a base upper surface 32, a base lower surface 33 (see fig. 7), a left lower connecting portion (lower connecting portion) 34, a right lower connecting portion (lower connecting portion) 35, and a recess 36.
The abutment front surface portion 31 is disposed toward the vehicle body front side of the upper cross member 23, and extends in the vehicle width direction between the left end portion 23a and the right end portion 23b of the upper cross member 23. The abutment front surface 31 is disposed so as to face the front end 24a (see fig. 9) of the left front projection 24 and the front end (not shown) of the right front projection 25.
The abutment upper surface portion 32 is provided in a state of being horizontally bent from the upper side of the abutment front surface portion 31 toward the rear of the vehicle body. The abutment upper surface portion 32 is disposed along the upper surface of the upper beam 23. The left end portion 32a and the right end portion 32b of the abutment upper surface portion 32 are arranged along the upper surface of the upper cross member 23. In the base upper surface portion 32, a left inner portion 32c that is located inward in the vehicle width direction than the left end portion 32a is disposed below the left end portion 32a, and a right inner portion 32d that is located inward in the vehicle width direction than the right end portion 32b is disposed below the right end portion 32 b. A concave portion 36 is formed between the left inner portion 32c and the right inner portion 32 d.
The abutment lower surface portion 33 is provided in a state of being horizontally bent from the lower side of the abutment front surface portion 31 toward the rear of the vehicle body. The abutment lower surface 33 is disposed along the lower surface of the upper beam 23.
That is, the abutment 13 is formed in a cross section コ (U-shaped) by the abutment front surface portion 31, the abutment upper surface portion 32, and the abutment lower surface portion 33. Note that the コ shape (U-shape) includes a substantially コ shape (substantially U-shape). The base 13 is formed such that the left and right front protruding portions 24, 25 are sandwiched by the base upper surface portion 32 and the base lower surface portion 33 from the up-down direction in a state where the base front surface portion 31 is opposed to the left and front protruding portion 24 and the right front protruding portion 25 from the vehicle body front side.
Thus, the base 13 serves as an upper reinforcement (upper reinforcement member) that reinforces the upper cross member 23 (i.e., the dash panel 12).
The lower left connecting portion 34 extends downward from the left end portion of the base 13. The lower left connecting portion 34 is fixed (connected) to the upper end 22a of the left vertical leg 22 by a fastening member such as a bolt 41, for example, at a position lower than the lower left end (lower end) of the upper cross member 23. The lower right connecting portion 35 extends downward from the right end portion of the base 13. The lower right connecting portion 35 is fixed (connected) to the upper end 22a of the right vertical leg 22 by, for example, a bolt 42 at a position lower than the lower right end (lower end) of the upper cross member 23.
The recess 36 is formed between the left and right second bumper brackets 15, 15 and is formed at the center in the vehicle width direction. The concave portion 36 is formed in a concave shape such that an upper portion (particularly, the abutment upper surface portion 32) is recessed downward.
Here, for example, a hood lock mechanism (not shown) is provided at a central portion in the vehicle width direction in the upper cross member 23. A recess 36 is disposed in front of the vehicle body of the hood lock mechanism. Thereby, a space for operating a lock release lever (not shown) for releasing the lock of the hood lock mechanism can be secured between the recess 36 of the base 13 and the up-down direction of the hood.
A hand can be inserted into the space between the recess 36 and the hood, and the lock release lever can be operated with the inserted hand. By operating the lock release lever, the hood lock mechanism can be released from the lock to open the hood.
< first Bumper bracket >)
A left first bumper bracket (bumper bracket) 14 is provided at the left end portion of the base 13, and a right first bumper bracket (bumper bracket) 14 is provided at the right end portion of the base 13. The left and right first bumper brackets 14 and 14 are supported by the base 13 and the front bulkhead 12 to support (fix) the front bumper face 17 and the like.
The left and right first bumper brackets 14 and 14 are substantially right-left symmetrical members. Therefore, the left and right first bumper brackets 14 are given the same reference numerals, and the left first bumper bracket 14 will be described in detail, and the detailed description of the right first bumper bracket 14 will be omitted. The left first bumper stay 14 will be simply referred to as "first bumper stay 14".
As shown in fig. 4 to 6, the first bumper stay 14 has an upper surface portion 44, a side surface portion 45, a ridge line portion 46, a rear lower fixing portion 47 (see also fig. 3), and a front surface portion 48. The upper surface 44 includes a front fixing portion 51 (see also fig. 3), a rear upper fixing portion (rear flange portion) 52, and a stepped portion 53.
The front fixing portion 51 is fixed to the upper portion 16a of the center sill 16 by fastening members such as bolts 55 and nuts 56. The front bumper face 17 is fixed to the upper portion 16a of the center roof rail 16 by a fastening member such as a clip 58. That is, the front fixing portion 51 is fixed to the front bumper face 17 via the center roof rail 16.
The front fixing portion 51 is disposed at a position higher than the rear upper fixing portion 52 in the up-down direction.
The rear upper fixing portion 52 is disposed at the rear of the vehicle body of the front fixing portion 51, and protrudes in a flange shape along the upper surface of the left end portion 32a of the abutment upper surface portion 32. The rear upper fixing portion 52 is provided so as to overlap the left end portion 32a of the abutment upper surface portion 32 from above, for example, by being joined to the left end portion 32a of the abutment upper surface portion 32 and the left end portion 23a of the upper cross member 23.
The step portion 53 extends so as to incline downward as going from the front fixing portion 51 toward the rear upper fixing portion 52. Specifically, the stepped portion 53 extends so as to incline downward from the front fixing portion 51 toward the vehicle body rear side. The portion 44a between the rear end 53a of the stepped portion 53 and the rear upper fixing portion 52 in the upper surface portion 44 is disposed horizontally, for example.
The front fixing portion 51 is disposed at a position higher than the rear upper fixing portion 52 by H1 in the up-down direction.
The side surface portion 45 extends downward in a state of being bent downward from the outer edge of the upper surface portion 44. The lower edge 45c of the side surface 45 extends from the front end 45a to the rear end 45b with a downward gradient. Therefore, the width W1 of the side surface portion 45 in the height direction is formed to gradually increase toward the rear of the vehicle body. The rear end 45b of the side surface 45 is disposed near the abutment front surface 31 and the upper cross member 23.
In other words, the first bumper stay 14 is formed such that the width W1 in the height direction gradually increases toward the vehicle body rear side where the upper cross member 23 is disposed from the front fixing portion 51.
The ridge line portion 46 is formed in a ridge line shape so as to protrude outward of the first bumper stay 14 by a portion where the upper surface portion 44 and the side surface portion 45 intersect. The ridge portion 46 extends from the front end portion 45a of the side surface portion 45 toward the vehicle body rear to the rear end portion 45b. A recess 61 is formed in the ridge portion 46 at a position offset from the rear end 45b of the side surface 45.
The recessed portion 61 is formed in a recessed shape such that a portion of the ridge portion 46 that is offset from the rear end portion 45b of the side surface portion 45 is recessed inward of the first bumper stay.
The rear lower fixing portion 47 is formed by bending along the abutment front surface portion 31 from the rear end portion 45b of the side surface portion 45 toward the vehicle width direction inner side. The rear lower fixing portion 47 is disposed at a position facing the abutment front surface portion 31 and below the rear upper fixing portion 52. The rear lower fixing portion 47 is provided on the abutment front surface portion 31 by being engaged with the abutment front surface portion 31, for example.
The front fixing portion 51, the rear upper fixing portion 52, and the lower end portion 47a of the rear lower fixing portion 47 are disposed at the respective vertexes of the triangle 60. The reason why the front fixing portion 51, the rear upper fixing portion 52, and the lower end portion 47a of the rear lower fixing portion 47 are disposed at the respective vertices of the triangle 60 will be described in detail later.
The front surface portion 48 is formed by bending inward in the vehicle width direction from the front end portion 45a of the side surface portion 45. The front surface 48 is fixed to a front upper side portion of a duct 91 described later by a fastening member such as a clip.
< second Bumper bracket >)
As shown in fig. 2 and 3, a left second bumper bracket (bumper bracket) 15 is provided on the left front protruding portion 24 of the base 13, and a right second bumper bracket (bumper bracket) 15 is provided on the right front protruding portion 25 of the base 13. The left and right second bumper brackets 15 and 15 are supported by the base 13 and the front bulkhead 12 to fix the front bumper face 17.
The left and right second bumper brackets 15 and 15 are substantially right-left symmetrical members. Therefore, the same reference numerals are given to the left and right second bumper brackets 15, and the left second bumper bracket 15 will be described in detail, and the detailed description of the right second bumper bracket 15 will be omitted. The left second bumper stay 15 will be described simply as "second bumper stay 15".
As shown in fig. 7 to 9, the second bumper stay 15 has an upper face portion 64, a side face portion 65, a ridge line portion 66, and a rear lower fixing portion 67. The upper surface portion 64 has a front fixing portion 71, a rear upper fixing portion (rear flange portion) 72, and a stepped portion 73.
The front fixing portion 71 is fixed to an upper portion 16a of the center roof rail 16, which will be described later, by fastening members such as bolts 75 and nuts 76. A front bumper face 17, which will be described later, is fixed to the upper portion 16a of the center roof rail 16 by a fastening member such as a clip 58. That is, the front fixing portion 71 is provided on the front bumper face 17 via the center roof rail 16.
The front fixing portion 71 is disposed at a position higher than the rear upper fixing portion 72 in the up-down direction.
The rear upper fixing portion 72 is disposed at the rear of the vehicle body of the front fixing portion 71, and protrudes in a flange shape along the upper surface of the left inner portion 32c of the abutment upper surface portion 32. The rear upper fixing portion 72 is provided by: the left front protruding portion 24 of the upper cross member 23 is fixed to the left inner portion 32c of the abutment upper surface portion 32 from above by means of a bolt 78, for example. That is, the rear upper fixing portion 72 is provided by being fixed to the left inner portion 32c of the abutment upper surface portion 32 and the left front protruding portion 24 of the upper cross member 23 by means of the bolts 78.
Here, the left inner portion 32c of the abutment upper surface portion 32 is disposed at a position lower than the left end portion 32a (see fig. 3) of the abutment upper surface portion 32. Therefore, the rear upper fixing portion 72 of the second bumper bracket 15 is disposed at a position lower than the rear upper fixing portion 52 of the first bumper bracket 14.
The step 73 extends so as to incline downward from the front fixing portion 71 toward the rear upper fixing portion 72. Specifically, the stepped portion 73 extends from the front fixing portion 71 to the rear upper fixing portion 72 so as to incline downward toward the rear of the vehicle body.
The front fixing portion 71 is disposed at a position higher than the rear upper fixing portion 72 by H2 in the up-down direction.
Here, the height H2 of the second bumper bracket 15 is set to be larger than the height H1 (see fig. 6) of the first bumper bracket 14. The reason why the height H2 of the second bumper stay 15 is set larger than the height H1 of the first bumper stay 14 is as follows.
That is, as shown in fig. 3, 6, and 9, for example, a plurality of bumper brackets (specifically, the first bumper bracket 14 and the second bumper bracket 15) are provided on the base 13 at intervals in the vehicle width direction. The rear upper fixing portion 52 of the first bumper stay 14 is disposed at a position lower than the rear upper fixing portion 52 of the second bumper stay 15.
Then, the height H2 of the second bumper bracket 15 is set to be larger than the height H1 of the first bumper bracket 14. Therefore, the front fixing portion 51 of the first bumper stay 14 and the front fixing portion 71 of the second bumper stay 15 can be disposed at the same height. That is, the front fixing portion 51 of the first bumper stay 14 and the front fixing portion 71 of the second bumper stay 15 (i.e., the front fixing portions of the plurality of bumper stays) provided on the base 13 can be horizontally arranged in the vehicle width direction.
The upper flange 17a of the front bumper face 17 is fixed to the front fixing portion 51 of the first bumper stay 14 and the front fixing portion 71 of the second bumper stay 15 via the upper portion 16a of the center upper beam 16. This makes it possible to fix the front bumper face 17 to the first bumper stay 14 and the second bumper stay 15 with high accuracy.
Returning to fig. 7 to 9, the side surface portion 65 extends downward in a state of being bent downward from the outer edge of the upper surface portion 64. The lower edge 65c of the side surface portion 65 extends from the front end portion 65a to the rear end portion 65b with a downward gradient, and thereby the width W2 in the height direction is formed to gradually increase toward the rear of the vehicle body. The rear end portion 65b of the side surface portion 65 is disposed in the vicinity of the abutment front surface portion 31 and the upper cross member 23 (specifically, the left front protruding portion 24).
In other words, the second bumper stay 15 is formed such that the width W2 in the height direction gradually increases from the front fixing portion 71 toward the vehicle body rear side where the left front protruding portion 24 of the upper cross member 23 is disposed.
The ridge line portion 66 is formed in a ridge line shape so as to protrude outward of the second bumper stay 15 by a portion where the upper surface portion 64 and the side surface portion 65 intersect. The ridge portion 66 extends from the front end portion 65a of the side surface portion 65 toward the vehicle body rear to the rear end portion 65b. A recess 81 is formed in the ridge portion 66 at a position offset from the rear end portion 65b of the side surface portion 65.
The recessed portion 81 is formed in a concave shape so that a portion of the ridge portion 66 that is offset from the rear end portion 65b of the side surface portion 65 is recessed inward of the second bumper stay 15.
The rear lower fixing portion 67 is formed by bending along the abutment front surface portion 31 from the rear end portion 65b of the side surface portion 65 toward the vehicle width direction outer side. The rear lower fixing portion 67 is disposed below the rear upper fixing portion 72 by being disposed at a position facing the abutment front surface portion 31. The rear lower fixing portion 67 is provided on the abutment front surface portion 31 by being engaged with the abutment front surface portion 31, for example.
The front fixing portion 71, the rear upper fixing portion 72, and the lower end 67a of the rear lower fixing portion 67 are disposed at the respective vertexes of the triangle 80. The reason why the front fixing portion 71, the rear upper fixing portion 72, and the lower end portion 67a of the rear lower fixing portion 67 are disposed at the respective vertices of the triangle 80 will be described in detail later.
< Central upper Beam >)
As shown in fig. 2, 6, and 9, the center roof rail 16 is fixed to the front fixing portion 51 of the first bumper stay 14 and the front fixing portion 71 of the second bumper stay 15. Specifically, the center roof rail 16 is disposed on the vehicle body front side of the first and second bumper brackets 14 and 15, and is disposed at a position facing the base 13 in the vehicle width direction. The center roof rail 16 extends flat in the vehicle width direction so that the upper portion 16a can be placed on the front fixing portion 51 of the first bumper stay 14 and the front fixing portion 71 of the second bumper stay 15.
The upper portion 16a of the center upper beam 16 is fixed to the front fixing portion 51 by, for example, bolts 55 and nuts 56 in a state of being placed on the front fixing portion 51 of the first bumper stay 14. The upper portion 16a of the center sill 16 is fixed to the front fixing portion 71 by, for example, bolts 75 and nuts 76 in a state of being placed on the front fixing portion 71 of the second bumper stay 15. That is, the upper portion 16a of the center roof rail 16 is fixed to the front fixing portion 51 of the first bumper stay 14 and the front fixing portion 71 of the second bumper stay 15.
An upper flange 17a of the front bumper face 17, which will be described later, is firmly fixed to the upper portion 16a of the center upper beam 16 by a fastening member such as a clip 58. That is, the front bumper face 17 is supported by the front fixing portion 51 of the first bumper stay 14 and the front fixing portion 71 of the second bumper stay 15 via the center roof rail 16. Here, the upper portion 16a of the center roof rail 16 extends flat in the vehicle width direction so as to be able to be placed on the front fixing portion 51 of the first bumper stay 14 and the front fixing portion 71 of the second bumper stay 15. Thus, the upper flange 17a of the front bumper face 17 can be horizontally extended in the vehicle width direction, and the shape of the upper flange 17a (i.e., the front bumper face 17) can be simplified.
Front bumper face, front grille >, front grille
As shown in fig. 1 and 2, the front bumper face 17 is a member that is provided in the front portion of the vehicle Ve (i.e., the front portion of the vehicle body), covers a front bumper (not shown) from the front side of the vehicle body, and is used to decorate the front face of the vehicle Ve. A front grille 18 is provided at the vehicle width direction center of the front bumper face 17.
The front grille 18 is opened so as to be able to introduce traveling wind (outside air) into a damper grille 101 (described later) disposed behind the vehicle body of the front bumper face 17. A logo 87 is provided at the center of the front grill 18.
< pipeline >)
As shown in fig. 5, 6, and 10, a duct 91 is provided in front of the vehicle body of the dash panel 12 and the base 13. The duct 91 guides traveling wind (outside air or air) to, for example, a radiator and a capacitor (not shown) attached to the dash panel 12. The duct 91 is fixed (connected) to the center sill 16, the abutment 13 and the first bumper bracket 14.
Specifically, for example, the front upper portion 91a of the duct 91 is fixed to the front wall portion 16b of the center sill 16 by a fastening member such as a clip 93. The rear upper flange 91b of the duct 91 is fixed to the base front surface 31 of the base 13 by a fastening member such as a clip 94. Further, for example, the rear upper side portion 91c of the duct 91 is fixed to the rear lower portion 45d of the side surface portion 45 in the first bumper stay 14 by a fastening member such as a clip 95. In addition, for example, the front upper side 91d of the duct 91 is fixed to the front surface 48 of the first bumper stay 14 by a fastening member such as a clip 96.
Therefore, the duct 91 can be firmly supported by the center sill 16, the base 13, and the first bumper stay 14. Thus, even when the duct 91 is formed of resin, it is possible to prevent the duct 91 from being easily affected by vibration during traveling of the vehicle Ve, for example, and to prevent the duct from being easily affected by the passage of traveling wind (air) formed by the duct 91. That is, the duct 91 can guide the traveling wind satisfactorily to the radiator and the capacitor mounted on the dash panel 12.
< vehicle-mounted component >)
As shown in fig. 10, a damper grille (in-vehicle member) 101 is disposed below the first bumper stay 14 and the second bumper stay 15. The damper grille 101 is provided behind the vehicle body of the front grille 18 and at a front opening 91e of the duct 91, and guides the traveling wind introduced from the front grille 18 to the duct 91. That is, the damper grille 101 controls the running wind directed to the radiator and the capacitor by, for example, opening and closing the damper 102 (see fig. 7) to adjust the running wind directed to the duct 91.
Here, the base 13 is supported on the upper portion of the front bulkhead 12 (for example, the upper cross member 23 and the upper end portions 22a, 22a of the left and right longitudinal legs 22, 22), and the first and second bumper brackets 14, 15 are supported on the base 13. Therefore, the first bumper stay 14 and the second bumper stay 15 can be disposed above in the space between the front bumper face 17 and the front bulkhead 12. As a result, the mounting space 104 for mounting the vehicle-mounted component such as the damper grille 101 can be ensured at a position lower than the first bumper stay 14 and the second bumper stay 15. Accordingly, the damper grille 101 can be mounted in the mounting space 104 below the first bumper bracket 14 and the second bumper bracket 15.
In addition, for example, when the collision load F1 is input to the front portion of the vehicle body due to a front light collision, a space in which the damper grille 101 can be retracted rearward of the vehicle body (i.e., the mounting space 104) can be ensured below the first bumper stay 14 and the second bumper stay 15.
Further, a radar device (in-vehicle component) 108 is disposed below the first bumper stay 14 and the second bumper stay 15 in front of the vehicle body of the damper grille 101. Specifically, the radar device 108 is provided, for example, behind the vehicle body of the emblem 87. The radar device 108 detects an obstacle to control a brake of the vehicle Ve, or measures a speed or an inter-vehicle distance of the surrounding vehicle to control the speed or the inter-vehicle distance of the vehicle Ve, for example.
As described above, the mounting space 104 for mounting the vehicle-mounted component is secured below the first bumper stay 14 and the second bumper stay 15. As a result, the radar device 108 can be mounted in the mounting space 104 below the first bumper stay 14 and the second bumper stay 15.
Further, for example, when the collision load F1 is input to the front portion of the vehicle body due to a front light collision, a space in which the radar device 108 can be retracted rearward of the vehicle body (i.e., the mounting space 104) can be secured below the first bumper stay 14 and the second bumper stay 15.
As described above, according to the vehicle body front portion structure 10 of the embodiment, as shown in fig. 3 to 5, the front fixing portion 51, the rear upper fixing portion 52, and the lower end portion 47a of the rear lower fixing portion 47 of the first bumper stay 14 are arranged on the respective vertexes of the triangle 60. The front bumper face 17 is provided on the front fixing portion 51 via the center roof rail 16.
Therefore, the weight (load) F2 of the front bumper face 17 acts downward on the front fixing portion 51. The load F2 acting on the front fixing portion 51 is dispersed (converted) into a tensile load F3 acting on the rear upper fixing portion 52 and a compressive load F4 acting on the rear lower fixing portion 47 (particularly, the lower end portion 47 a).
The rear lower fixing portion 47 is provided on the abutment front surface portion 31 (i.e., the abutment 13). The base 13 is supported by the dash panel 12. The dash panel 12 is a member having high strength and rigidity that forms a part of the vehicle body frame. Therefore, the compressive load F4 acting on the rear lower fixing portion 47 can be reliably supported by the base 13 (i.e., the dash panel 12).
On the other hand, the rear upper fixing portion 52 is provided on the abutment upper surface portion 32 (i.e., the abutment 13). Accordingly, the tensile load F3 acting on the rear upper fixing portion 52 can be supported by the base 13 (i.e., the dash panel 12).
As shown in fig. 3 and 9, the front fixing portion 71, the rear upper fixing portion 72, and the lower end 67a of the rear lower fixing portion 67 of the second bumper stay 15 are disposed at the respective vertexes of the triangle 80. The front bumper face 17 is provided on the front fixing portion 71 via the center roof rail 16.
Therefore, the weight (load) F5 of the front bumper face 17 acts downward on the front fixing portion 71. The load F5 acting on the front fixing portion 71 is dispersed (converted) into a tensile load F6 acting on the rear upper fixing portion 72 and a compressive load F7 acting on the rear lower fixing portion 67 (particularly, the lower end portion 67 a).
The rear lower fixing portion 67 is provided on the abutment front surface portion 31 (i.e., the abutment 13). The base 13 is supported by the left front projection 24 of the dash panel 12. The dash panel 12 is a member having high strength and rigidity that forms a part of the vehicle body frame. Therefore, the compressive load F7 acting on the rear lower fixing portion 67 can be reliably supported by the base 13 (i.e., the dash panel 12).
On the other hand, the rear upper fixing portion 72 is provided on the abutment upper surface portion 32 (i.e., the abutment 13). Accordingly, the tensile load F6 acting on the rear upper fixing portion 52 can be supported by the base 13 (i.e., the dash panel 12).
As a result, as shown in fig. 5 and 9, the weights (loads) F2 and F5 of the front bumper face 17 can be supported by the first bumper stay 14 and the second bumper stay 15. Thus, sagging of the front bumper face 17 can be suppressed by the first bumper stay 14 and the second bumper stay 15.
As shown in fig. 5, the width W1 of the side surface portion 45 in the height direction of the first bumper stay 14 is formed to gradually increase from the front fixing portion 51 toward the rear of the vehicle body where the upper cross member 23 is disposed. Therefore, the lower edge 45c of the side surface portion 45 connecting the front fixing portion 51 and the lower end portion 47a of the rear lower fixing portion 47 can be extended downward toward the vehicle body rear.
In this way, in a state where the load F2 of the front bumper face 17 acts on the front fixing portion 51, a part of the load F2 acting on the front fixing portion 51 can be easily dispersed (converted) into a compressive load F4 acting in a direction in which the rear lower fixing portion 47 (particularly, the lower end portion 47 a) presses the abutment front surface portion 31. That is, the compressive load F4 can be easily transmitted to the dash panel 12 and supported.
As shown in fig. 8 and 9, the width W2 of the side surface portion 65 in the height direction of the second bumper stay 15 is formed to gradually increase from the front fixing portion 71 toward the rear of the vehicle body where the upper cross member 23 is disposed. Therefore, the lower edge 65c of the side surface portion 65 connecting the front fixing portion 71 and the lower end portion 67a of the rear lower fixing portion 67 can be extended downward toward the vehicle body rear.
In this way, in a state where the load F5 of the front bumper face 17 acts on the front fixing portion 71, a part of the load F5 acting on the front fixing portion 71 can be easily dispersed (converted) into a compressive load F7 acting in a direction in which the rear lower fixing portion 67 (particularly, the lower end portion 67 a) presses the abutment front surface portion 31. That is, the compressive load F7 can be easily transmitted to the dash panel 12 and supported.
As described above, as shown in fig. 5 and 9, the compressive load F4 can be easily transmitted to the dash panel 12 and supported, and the compressive load F7 can be easily transmitted to the dash panel 12 and supported. This can further satisfactorily suppress sagging of the front bumper face 17 by the first bumper stay 14 and the second bumper stay 15.
As shown in fig. 3 and 4, the first bumper stay 14 has a ridge line portion 46 formed at a portion where the upper surface portion 44 and the side surface portion 45 intersect. Further, a concave portion 61 is formed in the ridge portion 46. Therefore, the strength of the first bumper stay 14 itself can be improved by the recessed portion 61, and deformation of the upper surface portion 44 toward the side surface portion 45 with the ridge line portion 46 as a boundary can be suppressed, for example.
As shown in fig. 3 and 8, the second bumper stay 15 has a ridge line portion 66 formed at a portion where the upper surface portion 64 and the side surface portion 65 intersect. Further, a concave portion 81 is formed in the ridge portion 66. Therefore, the strength of the second bumper stay 15 itself can be improved by the recessed portion 81, and deformation of the upper surface portion 64 toward the side surface portion 65 with the ridge line portion 66 as a boundary can be suppressed, for example.
As a result, as shown in fig. 5 and 9, the load F2 applied to the front fixing portion 51 of the first bumper stay 14 from the front bumper face 17 can be strongly received by the first bumper stay 14. Further, the load F5 acting on the front fixing portion 71 of the second bumper stay 15 from the front bumper face 17 can be strongly received by the second bumper stay 15.
Accordingly, the loads F2, F5 acting on the front fixing portion 51 of the first bumper bracket 14 and the front fixing portion 71 of the second bumper bracket 15 can be supported by the first bumper bracket 14 and the second bumper bracket 15.
As shown in fig. 3 and 4, the first bumper stay 14 includes a front fixing portion 51, a rear upper fixing portion 52, and a stepped portion 53 on the upper surface portion 44. The rear upper fixing portion 52 is provided so as to overlap the abutment upper surface portion 32 and the upper cross member 23 of the front bulkhead 12. The step 53 extends so as to incline downward from the front fixing portion 51 toward the rear upper fixing portion 52. Therefore, the rigidity of the first bumper stay 14 can be improved by improving the rigidity (particularly, the face rigidity) of the upper face portion 44.
As shown in fig. 8 and 9, the second bumper stay 15 includes a front fixing portion 71, a rear upper fixing portion 72, and a stepped portion 73 on the upper surface portion 64. The rear upper fixing portion 72 is provided so as to overlap the abutment upper surface portion 32 and the upper cross member 23 of the front bulkhead 12. The step 73 extends so as to incline downward from the front fixing portion 71 toward the rear upper fixing portion 72. Therefore, the rigidity (in particular, the surface rigidity) of the upper surface portion 64 can be improved, thereby improving the rigidity of the second bumper stay 15.
As a result, as shown in fig. 5 and 9, the load F2 acting on the front fixing portion 51 of the first bumper stay 14 from the front bumper face 17 can be easily transmitted to the base 13 side via the first bumper stay 14. In addition, the load F5 acting on the front fixing portion 71 of the second bumper stay 15 from the front bumper face 17 can be easily transmitted to the base 13 side via the second bumper stay 15.
Therefore, sagging of the front bumper face 17 can be further suppressed well by the first bumper stay 14 and the second bumper stay 15.
As shown in fig. 3, 7, and 9, the upper cross member 23 (particularly, the left front protruding portion 24, the right front protruding portion 25, and the like) of the front bulkhead 12 can be sandwiched from the up-down direction by the base 13 by forming the base 13 in a コ shape. Therefore, the rigidity of the base 13 can be improved, and the base 13 can function as an upper stiffener (i.e., a reinforcing member).
The base 13 is also mounted on the left and right longitudinal legs 22 of the dash panel 12. Therefore, the base 13 can be firmly supported by the dash panel 12 in a state of being disposed on the vehicle body front side of the dash panel 12. A first bumper bracket 14 and a second bumper bracket 15 are attached to the base 13. Thus, the first bumper stay 14 and the second bumper stay 15 can be firmly fixed to the base 13 in a state of being disposed from the base 13 toward the front of the vehicle body.
Here, for example, consider a case where the front bumper face 17 is disposed relatively widely apart from the dash panel 12 toward the vehicle body front side. In this case, the length of the first bumper stay 14 and the second bumper stay 15 in the vehicle body front-rear direction can also be suppressed by disposing the base 13 in front of the vehicle body of the dash panel 12. Thereby, the front bumper face 17 can be firmly supported by the first bumper stay 14 and the second bumper stay 15.
Further, the left front protruding portion 24 and the right front protruding portion 25 of the upper cross member 23 are sandwiched from the up-down direction by the base 13, and the base 13 is bridged to the left and right longitudinal leg portions 22 of the front bulkhead 12. Therefore, the dash panel 12 can be reinforced by the base 13. Here, consider a case where, for example, only one wheel is stepped up during running of the vehicle Ve, and a load in the torsion direction is input to the dash panel 12. In this case, the rigidity of the dash panel 12 against the load in the torsion direction can be improved by the base 13 (i.e., the upper reinforcement).
As shown in fig. 3, the left front projection 24 and the right front projection 25 of the upper cross member 23 are arranged to be sandwiched by the base 13. The left lower connecting portion 34 and the right lower connecting portion 35 of the base 13 are fixed to the upper end portions 22a, 22a of the left and right vertical leg portions 22, 22 at positions lower than the lower end portion of the upper cross member 23. Thus, the base 13 can also enhance the rigidity of the dash panel 12 against a load that bends the left and right vertical leg portions 22 outward in the vehicle width direction in a V-shape, for example.
That is, for example, when a load is input to the dash panel 12 to bend the left and right vertical leg portions 22 outward in the vehicle width direction in a V-shape, bending of the left and right vertical leg portions 22 outward in the vehicle width direction in a V-shape can be suppressed by the base 13.
The technical scope of the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.
The components in the above embodiments may be replaced with known components as appropriate, and the above embodiments may be combined as appropriate, within a range not departing from the gist of the present invention.

Claims (10)

1. A vehicle body front structure having a front bumper face provided on a front portion of a vehicle body and a front bulkhead provided behind the front bumper face,
the vehicle body front structure is provided with:
a base supported on an upper portion of the dash panel and having a base front surface portion disposed toward a front of a vehicle body and a base upper surface portion provided on an upper end of the base front surface portion; and
a bumper bracket supported by the base and the front panel for fixing the front face of the bumper,
the bumper bracket has:
A front fixing portion for fixing the front face of the bumper;
a rear upper fixing portion disposed behind the front fixing portion and provided on the base upper surface portion; and
a rear lower fixing part arranged below the rear upper fixing part and arranged on the front surface of the base,
the front fixing part, the rear upper fixing part and the rear lower fixing part are arranged on the vertexes of the triangle,
the base is an upper stiffener which is arranged at the rear part of the bumper bracket and is in a state that the front part of the base is opposite to the front protruding part of the front baffle plate,
the abutment extends across a pair of longitudinal legs of the front bulkhead.
2. The vehicle front body structure according to claim 1, characterized in that,
the width of the bumper stay in the height direction gradually increases from the front fixing portion toward the rear of the vehicle body where the front bulkhead is disposed.
3. The vehicle front body structure according to claim 1, characterized in that,
the bumper bracket has:
an upper face portion having the front fixing portion;
a side surface portion extending downward from the upper surface portion; and
a ridge line portion formed by a portion where the upper surface portion and the side surface portion intersect,
The ridge portion has a concave portion.
4. The vehicle front body structure according to claim 1, characterized in that,
the rear upper fixing portion is configured to overlap with the abutment upper surface portion,
the upper surface portion of the bumper stay has a stepped portion that is inclined downward from the front fixing portion toward the rear upper fixing portion, in addition to the front fixing portion and the rear upper fixing portion.
5. The vehicle front body structure according to claim 1, characterized in that,
the upper stiffener is formed in a コ shape so as to sandwich the front protruding portion from the up-down direction.
6. The vehicle front body structure according to claim 1, characterized in that,
the front bulkhead includes a cross member extending across the pair of longitudinal legs and having the front protruding portion,
the base has a lower connection portion fixed to the pair of vertical leg portions at a position lower than the cross member.
7. The vehicle front body structure according to claim 1, characterized in that,
the vehicle body front structure includes a duct provided in front of the vehicle body of the dash panel and guiding outside air to the dash panel side,
The pipe is fixed to the base and the bumper bracket.
8. The vehicle front body structure according to claim 1, characterized in that,
the vehicle body front structure is provided with a center upper beam that supports an upper flange of the front face of the bumper,
the center upper beam is fixed to the front fixing portion of the bumper bracket.
9. The vehicle front body structure according to claim 1, characterized in that,
the base has a recess formed in a manner recessed downward at the center in the vehicle width direction.
10. The vehicle front body structure according to claim 9, characterized in that,
the front fixing portion of the bumper stay is disposed at a position higher than the rear upper fixing portion in the up-down direction.
CN202210116748.2A 2021-03-16 2022-02-07 Front structure of vehicle body Active CN115071837B (en)

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JP2010285093A (en) * 2009-06-12 2010-12-24 Toyota Motor Corp Bumper cover supporting structure
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CN104210449A (en) * 2013-05-30 2014-12-17 现代自动车株式会社 Bumper cover fixing bracket of vehicle
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JP5396100B2 (en) * 2009-02-20 2014-01-22 本田技研工業株式会社 Body front structure
JP5084805B2 (en) * 2009-10-02 2012-11-28 本田技研工業株式会社 Vehicle front grill bracket
JP5002638B2 (en) * 2009-10-15 2012-08-15 本田技研工業株式会社 Body front structure
JP5498916B2 (en) * 2010-10-26 2014-05-21 本田技研工業株式会社 Bumper face mounting structure for vehicles
JP6304202B2 (en) * 2015-11-09 2018-04-04 マツダ株式会社 Vehicle front structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1178967A (en) * 1997-09-09 1999-03-23 Nissan Shatai Co Ltd Front end structure of frame
JP2010285093A (en) * 2009-06-12 2010-12-24 Toyota Motor Corp Bumper cover supporting structure
CN102887173A (en) * 2011-07-20 2013-01-23 本田技研工业株式会社 Vehicle body front structure
CN104210449A (en) * 2013-05-30 2014-12-17 现代自动车株式会社 Bumper cover fixing bracket of vehicle
CN207697684U (en) * 2017-10-27 2018-08-07 华晨汽车集团控股有限公司 A kind of automobile front beam mounting bracket

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