CN110857122B - Vehicle front structure - Google Patents
Vehicle front structure Download PDFInfo
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- CN110857122B CN110857122B CN201910576445.7A CN201910576445A CN110857122B CN 110857122 B CN110857122 B CN 110857122B CN 201910576445 A CN201910576445 A CN 201910576445A CN 110857122 B CN110857122 B CN 110857122B
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- 238000005192 partition Methods 0.000 claims abstract description 22
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
- B62D21/155—Sub-frames or underguards
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention provides a vehicle front structure capable of effectively transmitting collision load from a front side member to a dash cross-member in a frontal collision. In a first wall portion (36) of a closed cross-sectional structure portion (30X) of a dash cross-member (30), a vehicle width direction outer side portion is disposed at a vehicle rear side of an upper wall portion (22) of a front side member (20), and a front end (36F) is set at a height position of a rear end (22R) of the upper wall portion (22). In the second wall portion (38) of the closed cross-sectional structure portion (30X), a portion on the vehicle width direction outer side is disposed at the vehicle rear side of the partition wall portion (28) of the front side member (20), and the front end (38F) is set at the height position of the rear end (28R) of the partition wall portion (28). In the third wall portion (40) of the closed cross-sectional structure portion (30X), a portion on the vehicle width direction outer side is arranged at the vehicle rear side of the lower wall portion (24) of the front side member (20), and the front end (40F) is set at the height position of the rear end (24R) of the lower wall portion (24).
Description
Technical Field
The present invention relates to a vehicle front structure.
Background
There is known a structure in which a dash cross member is provided in a vehicle front portion on a vehicle rear side of a front side member, and is disclosed in, for example, japanese patent laid-open nos. 106005013, 2001-171556, 2003-191862 and 2001-030961. For example, japanese patent laying-open No. 106005013 discloses a structure in which rear end sides of a pair of left and right front side members are connected by a dash cross member. In this configuration, the rear end side lower portion of the front side member extends obliquely toward the vehicle rear side toward the vehicle lower side, and the dash cross-member is joined to the tip end portion thereof.
Disclosure of Invention
Problems to be solved by the invention
However, in the above-described prior art, since the dash cross-member is disposed on the front side member on the vehicle lower side than the portion extending in the vehicle front-rear direction, there is a possibility that the collision load may not be efficiently transmitted from the front side member to the dash cross-member at the time of a frontal collision.
The invention provides a vehicle front structure capable of effectively transmitting collision load from a front side member to a dash cross-member in a frontal collision.
Means for solving the problems
A vehicle front structure according to a first aspect of the present invention includes: a front side member that is arranged at a vehicle width direction outer side of a vehicle body front portion and extends in a vehicle front-rear direction; a dash cross member that is disposed adjacent to the front side surface member on a vehicle rear side and extends in a vehicle width direction, the front side surface member including an angular tube portion that is formed by an upper wall portion, a lower wall portion, and a pair of left and right side wall portions, and a partition wall portion that partitions an internal space of the angular tube portion in a vehicle vertical direction, the dash cross member having a closed cross-section structural portion that extends in the vehicle width direction, the closed cross-section structural portion including a first wall portion, a second wall portion, and a third wall portion that are disposed side by side in the vehicle vertical direction and that extend in a vehicle front-rear direction when viewed from a vehicle side, a portion on an outer side in the vehicle width direction in the first wall portion being disposed at a vehicle rear side of the upper wall portion, and a front end thereof being set at a height position of a rear end of the upper wall portion, in the second wall portion, a vehicle width direction outer side portion is disposed at a vehicle rear side of the partition wall portion, and a front end is set at a height position of a rear end of the partition wall portion, and in the third wall portion, a vehicle width direction outer side portion is disposed at a vehicle rear side of the lower wall portion, and a front end is set at a height position of a rear end of the lower wall portion.
According to the above configuration, the dash cross-member that extends in the vehicle width direction is disposed adjacently on the vehicle rear side of the front side member that extends in the vehicle front-rear direction. Therefore, the collision load input to the front side member at the time of a frontal collision will be transmitted to the dash cross-member.
Further, the dash cross-member includes, in the closed cross-sectional structure portion extending in the vehicle width direction, a first wall portion, a second wall portion, and a third wall portion that are provided side by side in the vehicle vertical direction and extend in the vehicle front-rear direction, respectively, when viewed in a vehicle side view. Here, in the first wall portion, a vehicle width direction outer side portion is disposed at a vehicle rear side of the upper wall portion of the front side member, and a front end is set at a height position of a rear end of the upper wall portion of the front side member. Therefore, a part of the collision load at the time of a frontal collision is transmitted well from the upper wall portion of the front side member to the first wall portion of the dash cross-member. Further, in the second wall portion, a portion on the vehicle width direction outer side is disposed at the vehicle rear side of the partition wall portion of the front side member, and the front end is set at a height position of the rear end of the partition wall portion of the front side member. Therefore, a part of the collision load at the time of a frontal collision is transmitted from the partition wall portion of the front side member to the second wall portion of the dash cross-member well. Further, in the third wall portion, a portion on the vehicle width direction outer side is disposed at the vehicle rear side of the lower wall portion of the front side member, and the front end is set at the height position of the rear end of the lower wall portion of the front side member. Therefore, a part of the collision load at the time of a frontal collision is transmitted well from the lower wall portion of the front side member to the third wall portion of the dash cross-member.
A vehicle front structure according to a second aspect of the present invention is the structure described in the first aspect, wherein the power unit is disposed on a vehicle width direction inner side of the front side member and at least a part of the power unit is located on a vehicle lower side of the front side member, the dash cross-member includes a power unit opposing portion that opposes the power unit in a vehicle front-rear direction at a vehicle width direction intermediate portion of the closed cross-section structure portion, and a range including the power unit opposing portion in the closed cross-section structure portion is configured as a continuum of a plurality of closed cross-section portions having a triangular shape in a vehicle side view. The "triangular shape" as used herein includes not only a shape of a triangle in a strict sense but also a shape of a triangle as a whole, which is substantially triangular, although it cannot be strictly said to be a triangle, such as a shape in which corners of a triangle are chamfered. The "continuum of the plurality of closed cross-sectional portions" refers to a structure in which the plurality of closed cross-sectional portions are formed continuously.
According to the above configuration, the dash cross-member includes the power unit opposing portion that opposes the power unit in the vehicle front-rear direction at the vehicle width direction intermediate portion of the closed cross-sectional structure portion. Therefore, when the power unit that has received the collision load at the time of a frontal collision moves toward the vehicle rear side, the power unit abuts against the power unit facing portion of the dash cross-member. Here, the range including the power unit opposing portion in the closed cross-sectional structure portion is configured as a continuous body of a plurality of closed cross-sectional portions having a triangular shape in a vehicle side view. Therefore, even if the power unit that has moved toward the vehicle rear side abuts against the power unit opposing portion of the dash cross-member, deformation of the dash cross-member is suppressed, and displacement of the power unit and the dash cross-member toward the cabin side is effectively suppressed.
Effects of the invention
As described above, according to the vehicle front structure of the present invention, there is an excellent effect that the collision load can be efficiently transmitted from the front side member to the dash cross-member in the front collision.
Drawings
Fig. 1 is a plan view showing a simplified structure of a vehicle front portion according to an embodiment of the present invention.
Fig. 2 is a perspective view showing a part of a frame portion of the vehicle front structure of fig. 1.
Fig. 3 is an enlarged longitudinal sectional view showing an enlarged state of a section taken along the line 3-3 of fig. 1.
Fig. 4 is an enlarged longitudinal sectional view showing an enlarged state of a section taken along line 4-4 of fig. 1.
Detailed Description
A vehicle front structure according to an embodiment of the present invention will be described with reference to fig. 1 to 4. Note that arrow FR shown appropriately in these drawings indicates the vehicle front side, arrow UP indicates the vehicle upper side, and arrow W indicates the vehicle width direction. Further, as the vehicle of the present embodiment, an electric vehicle is applied as an example.
(structure of the embodiment)
Fig. 1 shows a simplified plan view of a vehicle front portion structure according to the present embodiment. As shown in fig. 1, a bumper reinforcement 14 (hereinafter, simply referred to as "bumper RF 14") extending in the vehicle width direction is disposed at the front end side of the vehicle body front portion 10. The bumper RF14 has a closed cross-sectional structure extending in the vehicle width direction.
Further, a front side member 20 is disposed on the vehicle transverse direction outer side of the vehicle body front portion 10 on the vehicle rear side with respect to a portion on the vehicle transverse direction outer side of the bumper RF 14. The front side member 20 is provided in the vehicle body front portion 10 in a left-right symmetrical manner, and extends in the vehicle front-rear direction. In the present embodiment, the front end portion of the front side member 20 is directly joined to the bumper RF 14. The front end portion of the front side member 20 may be joined to the bumper RF14 through an intermediate member such as a crash box.
The front side member 20 is made of an aluminum alloy (broadly, metal) as an example, and is formed as an extrusion molding of an aluminum alloy material into a substantially constant cross-sectional shape by extrusion molding. In fig. 2, a part of a frame portion of a vehicle front structure is shown in a perspective view. As shown in fig. 2, the front side member 20 includes a rectangular tube portion 20X, and the rectangular tube portion 20X is formed by an upper wall portion 22, a lower wall portion 24, and a pair of left and right side wall portions 26. The upper wall portion 22 and the lower wall portion 24 are disposed substantially in parallel so as to face each other in the vehicle vertical direction, and extend in the vehicle width direction while extending in the vehicle front-rear direction. The pair of left and right side wall portions 26 extend in the vehicle longitudinal direction while connecting the vehicle transverse direction outer side end portions and the vehicle transverse direction inner side end portions of the upper wall portion 22 and the lower wall portion 24 to each other in the vehicle vertical direction. The front side member 20 includes a partition wall 28 that partitions the internal space of the corner tube portion 20X in the vehicle vertical direction. The partition wall portion 28 extends in the vehicle width direction while extending in the vehicle front-rear direction.
As shown in fig. 1, a suspension member 52 is attached to the front side member 20 in a suspended state. Further, a power unit 50 is disposed on the vehicle width direction inner side of the front side member 20. In the present embodiment, the power unit 50 is configured to include a motor instead of an engine, and is attached to the suspension member 52 as an example. Fig. 4 is an enlarged longitudinal cross-sectional view showing a state of being cut along the line 4-4 of fig. 1 in an enlarged manner. Fig. 4 shows a position of the front side member 20 on the vehicle right side with respect to the cut position on the line 4-4 in fig. 1 in a side view by a two-dot chain line. Further, in fig. 4, the power unit 50 is shown in a simplified manner. As shown in fig. 4, the power unit 50 is located on the vehicle lower side than the front side member 20.
On the other hand, fig. 3 is an enlarged longitudinal sectional view showing a state of being cut along the line 3-3 of fig. 1 in an enlarged manner. As shown in fig. 1 to 3, a dash cross-member 30 is disposed adjacent to the vehicle rear side of the front side member 20, and the dash cross-member 30 extends in the vehicle width direction.
The dash cross-member 30 is made of an aluminum alloy (broadly, metal) as an example, and is an extrusion-molded product formed by extrusion molding of an aluminum alloy material into a substantially constant cross-sectional shape (see fig. 3 and 4). The dash cross-member 30 has a closed-cross-section structural portion 30X (see fig. 3 and 4) extending in the vehicle width direction. As shown in fig. 3, the dash cross-member 30 includes an upper flange portion 30A extending toward the vehicle upper side from the upper rear end portion of the closed cross-section structure portion 30X, and a lower flange portion 30B extending toward the vehicle rear side from the lower rear end portion of the closed cross-section structure portion 30X. The upper flange portion 30A is joined to a lower end portion of the dash panel 18 that partitions the power unit compartment 12 and the vehicle compartment 60, and the lower flange portion 30B is joined to a front end portion of a floor panel 62 that constitutes a bottom of the vehicle compartment 60.
The closed cross-sectional structure portion 30X includes a front wall portion 32 and a rear wall portion 34, and is configured to include a plurality of connecting wall portions that connect the front wall portion 32 and the rear wall portion 34 together, that is, a first wall portion 36, a second wall portion 38, a third wall portion 40, a fourth wall portion 42, a fifth wall portion 44, a sixth wall portion 46, and a seventh wall portion 48. The front wall portion 32 and the rear wall portion 34 are disposed substantially in parallel so as to face each other in the vehicle front-rear direction. The upper end of the front wall 32 and the upper end of the rear wall 34 are connected by the first wall 36, and the lower end of the front wall 32 and the lower end of the rear wall 34 are connected by the seventh wall 48. In addition, a second wall portion 38, a third wall portion 40, a fourth wall portion 42, a fifth wall portion 44, and a sixth wall portion 46 (hereinafter, simply referred to as "second wall portion 38 to sixth wall portion 46") are formed in a space surrounded by the front wall portion 32, the rear wall portion 34, the first wall portion 36, and the seventh wall portion 48. The second wall portion 38 to the sixth wall portion 46 are also conceivable as ribs.
The upper portion 32A of the front wall portion 32 and the upper portion 34A of the rear wall portion 34 are disposed at the same height as the front side member 20. The entire area of the upper portion 32A of the front wall portion 32 and the upper half portion 34A1 of the upper portion 34A of the rear wall portion 34 extend in the vehicle vertical direction in the vehicle side view. In each of the front wall portion 32 and the rear wall portion 34, inclined portions 32B, 34B on the vehicle lower side than the upper portions 32A, 34A are configured to be inclined toward the vehicle lower side and toward the vehicle rear side. The lower half portion 34A2 of the upper portion 34A of the rear wall portion 34 is curved so as to gently connect the upper half portion 34A1 of the upper portion 34A of the rear wall portion 34 and the inclined portion 34B of the rear wall portion 34 in the vehicle side view.
The first wall portion 36, the second wall portion 38, and the third wall portion 40 are provided side by side in the vehicle vertical direction, and extend along the vehicle front-rear direction in a vehicle side view. In the present embodiment, the first wall portion 36 is slightly inclined toward the vehicle rear side and toward the vehicle upper side, as an example. In the first wall portion 36, a portion on the vehicle width direction outer side is arranged at the vehicle rear side of the upper wall portion 22 of the front side member 20, and the front end 36F is set at the height position of the rear end 22R of the upper wall portion 22 of the front side member 20. Further, in the second wall portion 38, a portion on the vehicle width direction outer side is disposed at the vehicle rear side of the partition wall portion 28 of the front side member 20, and the front end 38F is set at the height position of the rear end 28R of the partition wall portion 28 of the front side member 20. Further, in the third wall portion 40, a portion on the vehicle width direction outer side is disposed at the vehicle rear side of the lower wall portion 24 of the front side member 20, and the front end 40F is set at the height position of the rear end 24R of the lower wall portion 24 of the front side member 20. Two closed cross-sectional portions 30S (in other words, cross-sectional portions having a hollow closed space) are formed continuously in the closed cross-sectional structure portion 30X in the up-down direction by the upper portion 32A of the front wall portion 32, the upper portion 34A of the rear wall portion 34, the first wall portion 36, the second wall portion 38, and the third wall portion 40.
The fourth wall portion 42 connects the vertical intermediate portion of the inclined portion 32B of the front wall portion 32 to a portion of the rear wall portion 34 near the lower side of the portion to which the third wall portion 40 is connected, and is inclined toward the vehicle rear side and toward the vehicle upper side in a vehicle side view. The fifth wall portion 44 connects a lower vicinity portion of the front wall portion 32 to which the fourth wall portion 42 is connected, and a vertically intermediate portion of the inclined portion 34B of the rear wall portion 34, and extends in the vehicle front-rear direction in a vehicle side view. The sixth wall portion 46 connects the lower end portion of the front wall portion 32 to a portion of the rear wall portion 34 near the lower side of the portion to which the fifth wall portion 44 is connected, and is inclined toward the vehicle rear side and toward the vehicle upper side in a vehicle side view. The seventh wall portion 48, which connects the lower end portion of the front wall portion 32 and the lower end portion of the rear wall portion 34, extends in the vehicle front-rear direction in the vehicle side view. In the present embodiment, the rear end of the third wall portion 40 is spaced apart from the upper end of the fourth wall portion 42, the lower end of the fourth wall portion 42 is spaced apart from the front end of the fifth wall portion 44, and the rear end of the fifth wall portion 44 is spaced apart from the upper end of the sixth wall portion 46, but these wall portions may be in contact without being separated.
As shown in fig. 4, the dash cross-member 30 includes a power unit opposing portion 30T that opposes the power unit 50 in the vehicle front-rear direction at a vehicle width direction intermediate portion of the closed cross-sectional structure portion 30X. The range in which the power unit opposing portion 30T is included in the closed cross-sectional structure portion 30X is configured as a continuous body 30R (truss-like) of a plurality of closed cross-sectional portions 30H (in other words, cross-sectional portions having a hollow closed space) having a triangular shape in a vehicle side view, by the inclined portion 32B of the front wall portion 32, the inclined portion 34B of the rear wall portion 34, the third wall portion 40, the fourth wall portion 42, the fifth wall portion 44, the sixth wall portion 46, and the seventh wall portion 48.
As shown in fig. 2 and 3, a coupling member 54 that couples the front side member 20 and the dash cross-member 30 is provided on the rear side of the front side member 20. The coupling member 54 is, as an example, a cast product (in other words, a die-cast product) made of an aluminum alloy material. The coupling member 54 covers the rear portion of the front side member 20 over the entire circumference, and is joined to the upper and lower surfaces and the side surfaces of the rear portion of the front side member 20. Further, in the connecting member 54, a portion extending from the rear end side of the portion covering the rear portion of the front side member 20 is joined to a portion on the vehicle transverse direction outer side of the dash cross-member 30.
(action and Effect of the embodiment)
Next, the operation and effect of the above embodiment will be described.
The collision load at the time of a frontal collision is input to the front side member 20 from the bumper RF14 shown in fig. 1. Further, since the dash cross-member 30 is disposed adjacently at the vehicle rear side of the front side member 20 in the present embodiment, the collision load input to the front side member 20 at the time of a frontal collision is transmitted to the dash cross-member 30.
In addition, in the present embodiment, the closed cross-sectional structure portion 30X shown in fig. 3, which extends in the vehicle width direction in the dash cross-member 30, includes a first wall portion 36, a second wall portion 38, and a third wall portion 40 that are provided side by side in the vehicle vertical direction and extend in the vehicle front-rear direction in side view of the vehicle. Here, in the first wall portion 36, the vehicle width direction outer side portion is disposed at the vehicle rear side of the upper wall portion 22 of the front side member 20, and the front end 36F is set at the height position of the rear end 22R of the upper wall portion 22 of the front side member 20. Therefore, a part of the collision load at the time of a frontal collision is transmitted well from the upper wall portion 22 of the front side member 20 to the first wall portion 36 of the dash cross-member 30. Further, in the second wall portion 38, a portion on the vehicle width direction outer side is disposed at the vehicle rear side of the partition wall portion 28 of the front side member 20, and the front end 38F is set at the height position of the rear end 28R of the partition wall portion 28 of the front side member 20. Therefore, a part of the collision load at the time of a frontal collision is transmitted well from the partition wall portion 28 of the front side member 20 to the second wall portion 38 of the dash cross-member 30. Further, in the third wall portion 40, a portion on the vehicle width direction outer side is disposed at the vehicle rear side of the lower wall portion 24 of the front side member 20, and the front end 40F is set at the height position of the rear end 24R of the lower wall portion 24 of the front side member 20. Therefore, a part of the collision load at the time of a frontal collision will be transmitted well from the lower wall portion 24 of the front side member 20 to the third wall portion 40 of the dash cross-member 30.
By providing the first wall portion 36, the second wall portion 38, and the third wall portion 40 described above, it is possible to effectively receive the collision load from the front side member 20 with the dash cross-member 30 while suppressing deformation (collapse in cross-section) of the cross-member 30 in cross-section at the time of a frontal collision. Further, the collision load is favorably transmitted to the vehicle rear side in the first wall portion 36, the second wall portion 38, and the third wall portion 40.
As described above, according to the vehicle front structure of the present embodiment, the collision load can be efficiently transmitted from the front side member 20 to the dash cross-member 30 at the time of a front collision.
In the present embodiment, the front side member 20 can be efficiently deformed to absorb the collision energy by suppressing the deformation of the cross section of the dash cross-member 30 at the time of a frontal collision.
In the present embodiment, the dash cross-member 30 includes a power unit opposing portion 30T that faces the power unit 50 in the vehicle front-rear direction at a vehicle width direction intermediate portion of the closed cross-section structure portion 30X shown in fig. 4. Therefore, when the power unit 50 that has received the collision load at the time of a frontal collision moves toward the vehicle rear side, the power unit 50 will abut against the power unit opposing portion 30T of the dash cross-member 30, as indicated by the two-dot chain line in fig. 4.
Here, the range in which the power unit opposing portion 30T is included in the closed cross-sectional structure portion 30X is configured as a continuous body 30R of a plurality of closed cross-sectional portions 30H having a triangular shape in a vehicle side view. Therefore, even if the power unit 50 that has moved toward the vehicle rear side abuts the power unit opposing portion 30T of the dash cross-member 30, deformation of the dash cross-member 30 is suppressed. Therefore, the power unit 50 is received and stopped by the dash cross-member 30, so that the displacement of the power unit 50 and the dash cross-member 30 toward the cabin 60 side can be effectively suppressed.
(supplementary explanation of embodiment)
In addition, although the entire power unit 50 is located on the vehicle lower side than the front side member 20 in the above embodiment, a configuration in which a part of the power unit is located on the vehicle lower side than the front side member (20) may be adopted as a modification of the above embodiment.
Further, although the dash cross-member 30 includes the power unit opposing portion 30T in the above-described embodiment, as a modification of the above-described embodiment, a structure may be adopted in which the dash cross-member does not include a portion corresponding to the power unit opposing portion 30T of the above-described embodiment. In the above embodiment, the range in which the power unit opposing portion 30T is included in the closed cross-sectional structure portion 30X is configured as the continuous body 30R of the plurality of closed cross-sectional portions 30H having the triangular shape in the vehicle side view, but a structure may be adopted in which the continuous body 30R of the plurality of closed cross-sectional portions 30H having the triangular shape is not provided in the vehicle side view.
Further, although the power unit 50 is configured not to include the engine and to include the motor in the above embodiment, the power unit may be configured to include the engine and the motor and may be configured not to include the motor and to include the engine.
In addition, the above-described embodiment and the above-described modification examples can be implemented by being appropriately combined.
Although one example of the present invention has been described above, the present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the scope of the invention.
Claims (3)
1. A vehicle front structure having:
a front side member that is arranged at a vehicle width direction outer side of a vehicle body front portion and extends in a vehicle front-rear direction;
a dash cross member that is adjacently disposed at a vehicle rear side of the front side member and extends in a vehicle width direction;
a power unit that is disposed on a vehicle width direction inner side of the front side surface member and at least a part of which is located on a vehicle lower side of the front side surface member, the front side surface member including a corner tube portion formed by an upper wall portion, a lower wall portion, and a pair of left and right side wall portions, and a partition wall portion that partitions an internal space of the corner tube portion in a vehicle vertical direction,
the dash cross-member has a closed cross-sectional structure portion that extends in a vehicle width direction, the closed cross-sectional structure portion including a first wall portion, a second wall portion, and a third wall portion that are arranged side by side in a vehicle vertical direction and extend in a vehicle front-rear direction when viewed from a side of the vehicle, the first wall portion having a vehicle width direction outer portion that is arranged at a vehicle rear side of the upper wall portion and a front end that is set at a height position of a rear end of the upper wall portion, the second wall portion having a vehicle width direction outer portion that is arranged at a vehicle rear side of the partition wall portion and a front end that is set at a height position of a rear end of the partition wall portion, the third wall portion having a vehicle width direction outer portion that is arranged at a vehicle rear side of the lower wall portion and a front end that is set at a height position of a rear end of the lower wall portion,
the dash cross-member includes a power unit opposing portion that opposes the power unit in the vehicle front-rear direction at a vehicle width direction intermediate portion of the closed cross-sectional structure portion, and a range that includes the power unit opposing portion in the closed cross-sectional structure portion is configured as a continuum of a plurality of closed cross-sectional portions that are triangular in shape when viewed from the side of the vehicle.
2. The vehicle front structure according to claim 1,
the closed cross-section structure portion includes a front wall portion and a rear wall portion, an upper portion of the front wall portion and an upper portion of the rear wall portion are respectively disposed at a height position of the front side member, the upper portion of the front wall portion and the upper portion of the rear wall portion respectively constitute an inclined portion of the front wall portion and an inclined portion of the rear wall portion that are located on a vehicle lower side than the upper portion of the rear wall portion, the inclined portions respectively incline toward a vehicle lower side and toward a vehicle rear side, an entire region of the upper portion of the front wall portion and an upper half portion of the upper portion of the rear wall portion extend in a vehicle vertical direction in a vehicle side view, and a lower half portion of the upper portion of the rear wall portion is curved so as to gently connect the upper half portion of the upper portion of the rear wall portion and the inclined portion of the rear wall portion in the vehicle side view.
3. The vehicle front structure according to claim 1 or 2,
the front side member has, on a rear portion side thereof, a coupling member that couples the front side member and the dash cross-member, the coupling member covering a rear portion of the angular tube portion of the front side member over an entire circumference thereof, engaging with the upper wall portion, the lower wall portion, and the pair of left and right side wall portions of the front side member, and engaging with a portion on a vehicle width direction outer side of the dash cross-member, the portion extending from a rear end side of a portion covering the rear portion of the angular tube portion of the front side member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-156582 | 2018-08-23 | ||
| JP2018156582A JP7063193B2 (en) | 2018-08-23 | 2018-08-23 | Vehicle front structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110857122A CN110857122A (en) | 2020-03-03 |
| CN110857122B true CN110857122B (en) | 2022-04-29 |
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ID=69623665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910576445.7A Active CN110857122B (en) | 2018-08-23 | 2019-06-28 | Vehicle front structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7063193B2 (en) |
| CN (1) | CN110857122B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114162224B (en) * | 2021-12-10 | 2023-12-12 | 中建八局西南建设工程有限公司 | Wagon head puncture-proof device |
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| JP2020029208A (en) | 2020-02-27 |
| JP7063193B2 (en) | 2022-05-09 |
| CN110857122A (en) | 2020-03-03 |
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