CN114590322A - Vehicle body front structure - Google Patents
Vehicle body front structure Download PDFInfo
- Publication number
- CN114590322A CN114590322A CN202111186177.1A CN202111186177A CN114590322A CN 114590322 A CN114590322 A CN 114590322A CN 202111186177 A CN202111186177 A CN 202111186177A CN 114590322 A CN114590322 A CN 114590322A
- Authority
- CN
- China
- Prior art keywords
- upper beam
- flange
- gusset
- beam body
- surface portion
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 36
- 239000011261 inert gas Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
Landscapes
- 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 body front structure, which can reduce the joint operation for hindering the process of jointing a gusset plate to an upper beam. A vehicle body front structure (10) includes an upper beam (16) and a gusset (17). The upper beam includes an upper beam body (21) having a substantially コ -shaped cross section and opening outward in the vehicle width direction, and an upper beam cover member coupled to the upper beam body so as to close the opening of the upper beam body. The gusset plate extends from the front side frame (15) to the outside in the vehicle width direction and is connected to the upper beam body. Further, the gusset has: and a third cover flange (74) that extends from the inner side surface (24) of the upper beam body over the upper ridge line (26) and overlaps the upper surface (25).
Description
Technical Field
The present invention relates to a vehicle body front structure.
Background
As a vehicle body front structure, for example, the following structures are disclosed: an upper member (upper member) extends from a front pillar (front pillar) toward the front of the vehicle body in a state of being disposed on the outer side in the vehicle width direction of a front side frame (front side frame), and the extended upper member is formed into a closed cross section by joining an outer panel (outer panel) and an inner panel (inner panel). Specifically, the outer panel and the inner panel are formed with an upper flange extending upward and a lower flange extending downward, respectively.
The upper beam is formed into a closed cross section by joining the upper flange of the outer panel to the upper flange of the inner panel and joining the lower flange of the outer panel to the lower flange of the inner panel. Therefore, in the upper beam, the joined upper flanges project upward, and the joined lower flanges project downward. The front end of the upper member is connected to the front end of the front side frame via a gusset (gusset) (see, for example, patent document 1).
[ Prior art documents ]
[ patent document ]
[ patent document 1] Japanese patent No. 6062883 publication
Disclosure of Invention
[ problems to be solved by the invention ]
However, in the upper beam of patent document 1, the joined upper flanges project upward, and the joined lower flanges project downward. It is conceivable that the upper and lower flanges projecting in the up-down direction interfere with the use of equipment (tools) such as a welding gun when the gusset is joined to the front end portion of the upper beam by spot welding, for example.
Therefore, in a portion where spot welding is difficult with a device such as a welding gun, for example, joining by metal inert gas welding (MIG welding) or the like by hand is necessary. However, the process of joining the gusset to the upper beam is hindered (hindered) by a manual work process such as metal inert gas welding. Therefore, it is required to reduce the number of working steps such as manually welding the gusset to the upper member by inert gas.
The invention aims to provide a vehicle body front structure, which can reduce the joint operation for hindering the process of jointing a gusset plate to an upper beam.
[ means for solving problems ]
In order to solve the above problems, the present invention proposes the following technical means.
(1) The vehicle body front structure (for example, the vehicle body front structure 10 of the embodiment) of the present invention includes: an upper rail (e.g., upper rail 16 according to the embodiment) including an upper rail main body (e.g., upper rail main body 21 according to the embodiment) having a substantially コ -shaped cross section and an upper rail cover member (e.g., upper rail cover member 22 according to the embodiment), the upper rail main body being open to the outside in the vehicle width direction, the upper rail cover member being joined to the upper rail main body so as to close an opening (e.g., opening 33 according to the embodiment) of the upper rail main body; and a gusset (for example, a gusset 17 of the embodiment) extending outward in the vehicle width direction from a front side frame (for example, a front side frame 15 of the embodiment) provided on an inner side in the vehicle width direction of the upper member, and connected to the upper member body, the gusset having: the upper joining flange (e.g., the third lid flange 74 of the embodiment) overlaps the upper surface (e.g., the upper surface 25 of the embodiment) of the roof rail body from the vehicle-widthwise inner surface (e.g., the inner surface 24 of the embodiment) of the roof rail body over the ridge line portion (e.g., the upper ridge line portion 26 of the embodiment) of the roof rail body.
According to the above configuration, the upper member body is formed in the substantially コ -shaped cross section that opens outward in the vehicle width direction. Therefore, the upper flange of the upper beam does not protrude upward. Further, an upper joining flange of the gusset is provided so as to overlap the upper surface from the inner surface of the upper beam body over the ridge portion. Therefore, when the upper joining flange of the gusset is joined to the upper surface of the upper beam body, equipment (tool) such as a welding gun (electrode rod) can be applied.
Further, by forming the upper beam body to have a substantially コ -shaped cross section, the lower flange of the upper beam can be prevented from protruding downward. Therefore, for example, when the lower joining flange of the gusset is joined to the lower surface of the upper beam body, equipment (tool) such as a welding gun (electrode rod) can be applied.
Thus, when the gusset plate is joined to the upper frame body, for example, a joining operation by hand such as metal inert gas welding, which hinders (hinders) a step of joining the gusset plate to the upper frame, can be reduced.
The upper joining flange of the gusset is provided so as to overlap the upper surface from the inner surface of the upper beam body over the ridge portion. Therefore, for example, the upper joining flange can be positioned in the vehicle width direction and the vertical direction by the ridge line portion and the upper surface. Thus, the positioning accuracy of the gusset plate to the upper beam can be improved.
Further, the upper joining flange of the gusset is joined so as to overlap the upper surface from the inner surface of the upper beam body over the ridge portion. Therefore, the strength of the joint portion of the gusset to the upper beam (hereinafter, also referred to as joint strength) can be improved. Thus, for example, when an impact load (front collision load) is input to the front side frame due to a frontal collision, the joint portion is suppressed from breaking, and the input impact load is transmitted to the upper beam via the gusset.
(2) The gusset may also have: the rear joining flange (for example, the fourth gusset flange 67 in the embodiment) overlaps with a shelf portion (for example, the rear shelf portion 78 in the embodiment) of the upper joining flange that passes over the ridge line portion in a plan view.
According to the structure, the upper joining flange of the gusset has a shed portion that crosses the ridge portion of the upper beam body. The ceiling portion extends from the inner side surface of the upper beam body to the upper surface via the ridge portion by passing over the ridge portion. Therefore, the joining strength to the upper beam body by the ceiling portion can be made strong. The shelf portion is disposed so as to overlap the rear-side joining flange in plan view.
Thus, the following can be suppressed by the shed part having strong bonding strength: the impact load input due to the frontal collision causes the joint portion of the rear-side joining flange to the upper beam body to break.
(3) The upper beam cover member may have a front end portion (e.g., the first front flange 45 of the embodiment) joined to a front-side joining flange (e.g., the third gusset flange 66 of the embodiment) of the gusset, and a rear end portion (e.g., the rear end portion 22a of the upper beam cover member of the embodiment) joined to a front pillar (e.g., the front pillar 14 of the embodiment).
According to the above configuration, the front end portion of the upper beam cover member is joined to the front-side joining flange, and the rear end portion of the upper beam cover member is joined to the front pillar. Therefore, the upper beam cover member can be integrally formed from the front end portion to the rear end portion. Thus, for example, when an impact load due to a frontal collision is transmitted to the upper beam via the gusset, the transmitted impact load can be supported by the upper beam.
Further, by integrally forming the upper beam cover member from the front end portion to the rear end portion, it is possible to eliminate the formation of an unnecessary fragile portion in the upper beam itself.
(4) The upper surface of the upper beam body may have a recess (e.g., recess 31 of the embodiment) that is joined to the upper joining flange, and the recess may be provided continuously with the ridge portion of the upper beam body.
According to the above configuration, the concave portion is formed on the upper surface of the upper beam body so as to be continuous with the ridge portion. Further, the upper joining flange is joined to the recess. Thus, when the gusset plate is joined to the upper beam body, the positioning accuracy of the gusset plate can be further improved by the recess.
Further, the recessed portion is continuous with the ridge portion of the upper beam body, so that the recessed portion can also serve as a rib (bead) in the upper surface of the upper beam body. Thus, the impact load transmitted from the gusset to the upper member due to the frontal collision can be efficiently transmitted to the vehicle body rear side of the upper member via the recess (i.e., the rib) and the like.
(5) The gusset may also have: the upper joining flange overlapping the upper surface of the upper beam body; a front-side joining flange (e.g., a third gusset flange 66 of the embodiment) that is overlapped on the inner side surface of the upper beam body and joins a front end portion (e.g., a first front flange 45 of the embodiment) of the upper beam cover member; a rear joining flange (e.g., a fourth gusset flange 67 in the embodiment) that overlaps the inner surface of the upper beam body and overlaps a ceiling portion (e.g., a rear ceiling portion 78 in the embodiment) of the upper joining flange that crosses the ridge portion in a plan view; and a lower joining flange (e.g., a fifth gusset flange 68 of the embodiment) overlapping a lower surface (e.g., a lower surface portion 27 of the embodiment) of the upper beam body.
According to the structure, the upper joining flange is overlapped on the upper surface of the upper beam body. The front-side joining flange and the rear-side joining flange are overlapped on the inner side surface of the upper beam body. Further, the lower joining flange is overlapped with the inner side surface of the upper beam body.
Here, the upper beam body is formed in a substantially コ -shaped cross section. That is, a space for disposing a device (specifically, an electrode rod) such as spot welding can be secured inside the upper beam body.
Therefore, in the step of joining the upper joining flange, the lower joining flange, the front joining flange, and the rear joining flange to the upper surface, the lower surface, and the inner side surface of the upper beam body, joining using equipment such as spot welding can be performed, for example. Thus, for example, a manual joining operation such as metal inert gas welding can be eliminated, and the joining step can be performed efficiently without hindering the step of joining the gusset to the upper beam.
[ Effect of the invention ]
According to the present invention, the upper member body is formed in a substantially コ -shaped cross section that opens outward in the vehicle width direction, and the upper and lower flanges of the upper member do not project in the vertical direction. This reduces the number of joining operations that hinder the step of joining the gusset to the upper beam.
Drawings
Fig. 1 is a side view of a vehicle body front structure according to an embodiment of the present invention.
Fig. 2 is a sectional view taken along line II-II of fig. 1.
Fig. 3 is a perspective view of the vehicle body front structure according to the embodiment viewed from the vehicle width direction inner side of the vehicle body rear.
Fig. 4 is a perspective view partially exploded from the vehicle body front structure of fig. 3.
Fig. 5 is an enlarged perspective view of a V portion of fig. 1.
Fig. 6 is a perspective view of the upper rail cover member exploded from the vehicle body front structure of fig. 5.
Fig. 7 is a perspective view of the vehicle body front structure according to the embodiment viewed from the vehicle width direction inner side in front of the vehicle body.
[ description of symbols ]
Ve: vehicle with a steering wheel
10: vehicle body front structure
14: front pillar
15: front side frame
16: upper beam
17: gusset plate
21: upper beam body
22: upper beam cover component
22 a: rear end of upper beam cover member
24: inner side (inner side)
25: upper surface part (Upper surface)
26: upper ridge line part (ridge line part)
27: lower surface part (lower surface)
31: concave part
33: opening part
45: first front flange (front end of upper beam cover component)
52: gusset plate body
53: gusset plate cover
66: third gusset plate flange (front side joint flange)
67: fourth angle supporting board flange (rear side joint flange)
68: fifth gusset flange (lower side joint flange)
74: third cover flange (Upper joint flange)
78: rear canopy part (canopy part)
Detailed Description
Hereinafter, a vehicle body front portion structure 10 according to an embodiment of the present invention will be described with reference to the drawings. In the drawings, 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, and the like of the vehicle are not particularly limited, and an automobile will be exemplified as an embodiment. The vehicle body front structure 10 is a structure formed substantially in bilateral symmetry, and a left side member will be described below, and a right side member will not be described.
< vehicle >
As shown in fig. 1, the vehicle Ve includes, for example: a side member 12 disposed on the left outer side in the vehicle width direction and extending in the vehicle body front-rear direction; and a vehicle body front structure 10 provided at a front portion of the side member 12.
The side member 12 is a member having high rigidity formed with a closed cross section having a rectangular shape, for example, and constitutes a part of a vehicle body lower frame. The front pillar 14 is erected upward from the front end portion 12a of the side member 12.
< front structure of vehicle body >
The vehicle body front structure 10 includes, for example, a front pillar 14, a front side frame 15, an upper beam 16, and a gusset 17.
The front pillar 14 is a member having high rigidity formed as a closed cross section, for example, and constitutes a part of a vehicle body front frame. The front side frame 15 extends forward of the vehicle body from a portion of the side member 12 at the rear of the vehicle body at the front end portion 12a, for example. The front side frame 15 is a member having high rigidity due to a closed cross section formed in a rectangular shape, for example, and constitutes a part of a front frame of the vehicle body. The front side frame 15 is provided on the vehicle width direction inner side of an upper member 16 described later.
< upper beam >
As shown in fig. 1 and 2, the upper beam 16 extends forward and downward of the vehicle body from a portion 14a of the front pillar 14 corresponding to an upper dashboard (upper dashboard)18, for example. The upper member 16 is a member having high rigidity, for example, by being formed into a rectangular closed cross section, and constitutes a part of the vehicle body front frame. The upper member 16 is provided on the vehicle width direction outer side of the front side frame 15. Specifically, the upper beam 16 includes an upper beam body 21 and an upper beam cover member 22.
The upper body 21 includes, for example, an inner side surface portion (inner side surface) 24, an upper surface portion (upper surface) 25, an upper ridge line portion (ridge line portion) 26, a lower surface portion (lower surface) 27, and a lower ridge line portion 28.
The inner side portion 24 is provided on the inner side in the vehicle width direction of the upper beam body 21 and stands vertically in the vertical direction. The upper surface portion 25 extends laterally outward in the vehicle width direction from the upper edge of the inner surface portion 24 so as to intersect the inner surface portion 24. The upper ridge line portion 26 is formed in a ridge line shape by a corner portion protruding outward of the upper beam body 21, by the intersection of the inner side surface portion 24 and the upper surface portion 25.
The lower surface portion 27 extends laterally outward in the vehicle width direction from the lower edge of the inner surface portion 24 so as to intersect the inner surface portion 24. The lower ridge line portion 28 is formed in a ridge line shape by a corner portion protruding to the outside of the upper beam body 21 by the intersection of the inner side surface portion 24 and the lower surface portion 27.
The upper rail body 21 is formed mainly by the inner side surface portion 24, the upper surface portion 25, and the lower surface portion 27 in a substantially コ -shaped cross section that opens outward in the vehicle width direction.
As shown in fig. 3 and 4, the upper beam body 21 has a recess 31 (see also fig. 3) formed in the front portion 21a at the upper surface 25. The concave portion 31 is formed in a concave shape so as to be recessed from the upper surface portion 25 toward the inside (i.e., downward) of the upper beam body 21. The recessed portion 31 extends in the vehicle body longitudinal direction by being provided continuously with the front portion 26a of the upper ridge line portion 26. As for the concave portion 31, detailed description will be made below.
As shown in fig. 2, 5, and 6, the opening 33 of the upper rail body 21 is closed by the upper rail cover member 22 from the outside in the vehicle width direction and the front of the vehicle body.
The upper roof rail cover member 22 has an outer side surface portion 41, a cover upper flange 42, a cover lower flange 43, a front surface portion 44, a first front flange (front end portion of the upper roof rail cover member 22) 45, a second front flange 46, and a third front flange 47.
The outer side surface portion 41 is disposed with a gap in the vehicle width direction outer side with respect to the inner side surface portion 24, and is vertically erected in the vertical direction.
The cover upper flange 42 extends laterally outward in the vehicle width direction from the upper edge of the outer side surface portion 41 so as to intersect the outer side surface portion 41. The cover upper flange 42 is joined by spot welding, for example, along the upper outer edge portion 25a in the upper surface portion 25 of the upper beam body 21. The upper flange 16a of the upper member 16 is formed outward in the vehicle width direction by the lid upper flange 42 and the upper outer edge portion 25 a. That is, the upper flange 16a of the upper beam 16 is formed so as not to protrude upward.
The cover lower flange 43 extends laterally outward in the vehicle width direction from the lower edge of the outer side surface portion 41 so as to intersect the outer side surface portion 41. The lid portion lower flange 43 is joined by spot welding, for example, along the lower outer edge portion 27a in the lower surface portion 27 of the upper beam body 21. The lower flange 16b of the upper member 16 is formed outward in the vehicle width direction by the cover lower flange 43 and the lower outer edge portion 27 a. That is, the lower flange 16b of the upper beam 16 is formed so as not to protrude downward.
In this way, the upper flange 16a and the lower flange 16b of the upper beam 16 are formed so as not to protrude upward and downward, respectively.
The front surface portion 44 extends from the front edge 41a of the outer surface portion 41 inward in the vehicle width direction so as to intersect with the outer surface portion 41.
The first front flange 45 extends from the inner edge 44a of the front surface portion 44 toward the front of the vehicle body so as to intersect with the front surface portion 44. The first front flange 45 is joined by spot welding, for example, along the front end portion 24a of the inner side surface portion 24 of the upper beam body 21.
The second front flange 46 extends from the upper edge 44b of the front surface portion 44 toward the front of the vehicle body so as to intersect the front surface portion 44. The second front flange 46 is joined by spot welding, for example, along the front end portion 25b in the upper surface portion 25 of the upper beam body 21.
The third front flange 47 extends from the lower edge 44c of the front surface portion 44 toward the front of the vehicle body so as to intersect with the front surface portion 44. The third front flange 47 is joined by spot welding, for example, along the front end portion 27b in the lower surface portion 27 of the upper beam body 21.
In this way, the lid upper flange 42 is joined to the upper outer edge portion 25a of the upper surface portion 25, and the lid lower flange 43 is joined to the lower outer edge portion 27a of the lower surface portion 27. The first front flange 45 is joined to the front end 24a of the inner side surface portion 24. Further, the second front flange 46 is joined to the front end portion 25b of the upper surface portion 25, and the third front flange 47 is joined to the front end portion 27b of the lower surface portion 27.
Thereby, the upper beam cover member 22 is joined (coupled) in a state where it is accommodated in the opening portion 33 of the upper beam body 21. In this state, the opening 33 of the upper beam body 21 is closed from the outside in the vehicle width direction by the outer side surface portion 41 and from the front of the vehicle body by the front surface portion 44.
The upper beam 16 is formed into a rectangular closed cross section by joining (coupling) the upper beam cover member 22 to the opening 33 of the upper beam body 21.
Further, for example, the rear end portion 22a of the upper beam cover member 22 is coupled (coupled) to the front pillar 14 by a plurality of fastening bolts 49.
< gusset plate >
As shown in fig. 3 and 4, the front end portion 16c of the upper member 16 is coupled (connected) to the front end portion 15a of the front side frame 15 via a gusset 17. That is, the angled gusset 17 is joined to the front end 16c of the upper beam 16.
The gusset 17 extends outward in the vehicle width direction from the front end portion 15a of the front side frame 15, and is connected to the front portion 21a of the upper member body 21. Specifically, the gusset 17 includes a gusset body 52 and a gusset lid 53.
The gusset main body 52 extends (protrudes) outward in the vehicle width direction from the outer surface portion 15c of the front end portion 15a of the front side frame 15. Specifically, the gusset plate body 52 includes a gusset plate lower surface portion 61, a gusset plate front surface portion 62, a gusset plate rear surface portion 63, a first gusset plate flange 64, a second gusset plate flange 65, a third gusset plate flange (front side joining flange) 66, a fourth gusset plate flange (rear side joining flange) 67, and a fifth gusset plate flange (lower side joining flange) 68 (see fig. 6).
The gusset lower surface portion 61 extends from the lower surface 15b of the front end portion 15a of the front side frame 15 to the vehicle width direction outer side to the lower surface 16d of the front end portion 16c of the upper member 16. The gusset front surface portion 62 is erected longitudinally from the front edge of the gusset lower surface portion 61 upward so as to intersect with the gusset lower surface portion 61. The gusset rear surface portion 63 is erected longitudinally from the rear edge of the gusset lower surface portion 61 upward so as to intersect with the gusset lower surface portion 61.
The gusset body 52 is formed in a substantially U-shaped cross section by a gusset lower surface portion 61, a gusset front surface portion 62, and a gusset rear surface portion 63.
The first gusset flange 64 projects laterally from the upper edge of the gusset front surface portion 62 toward the front of the vehicle body so as to intersect with the gusset front surface portion 62. The first gusset flange 64 is joined to a first cover flange 72 of the gusset cover 53, which will be described later, by spot welding from below, for example.
The second gusset flange 65 projects laterally from the upper edge of the gusset rear surface portion 63 toward the vehicle body rear side so as to intersect with the gusset rear surface portion 63. The second gusset flange 65 is joined to a second cover flange 73 of the gusset cover 53, which will be described later, by spot welding, for example, from below.
The gusset body 52 is formed in a substantially hat-shaped cross section by a gusset lower surface portion 61, a gusset front surface portion 62, a gusset rear surface portion 63, a first gusset flange 64, and a second gusset flange 65.
The third gusset flange 66 extends from the outer edge 62a of the gusset front surface portion 62 toward the vehicle body front so as to intersect with the gusset front surface portion 62. The third gusset flange 66 is overlapped on the front end portion 24a of the inner side surface portion 24 of the upper beam body 21, for example, and joined by spot welding. The third gusset flange 66 is provided at a distance from the fourth gusset flange 67 toward the front of the vehicle body.
The third gusset flange 66 is disposed below a front shelf portion 77, which will be described later, and is disposed at a position overlapping the front shelf portion 77 in plan view.
As shown in fig. 1, 5, and 7, the first front flange 45 of the upper rail cover member 22 is joined to the front end portion 24a of the inner side surface portion 24 of the upper rail body 21 from the vehicle width direction outer side. The third gusset flange 66 is joined to the front end 24a of the inner side surface portion 24 from the inside in the vehicle width direction.
Therefore, the first front flange 45 of the upper beam cover member 22 (i.e., the front end portion of the upper beam cover member 22) is joined to the third gusset flange 66 via the front end portion 24a of the inner side surface portion 24. As described above, the rear end portion 22a of the upper beam cover member 22 is coupled (coupled) to the front pillar 14 by the plurality of fastening bolts 49.
The reason why the rear end portion 22a of the upper beam cover member 22 is joined to the front pillar 14 by joining the first front flange 45 of the upper beam cover member 22 (the front end portion of the upper beam cover member 22) to the third gusset flange 66 will be described in detail later.
Returning to fig. 3 and 4, the fourth gusset flange 67 extends from the outer edge 63a of the gusset rear surface portion 63 toward the vehicle body rear side so as to intersect with the gusset rear surface portion 63. The fourth gusset flange 67 is overlapped on the front end portion 24a of the inner side surface portion 24 of the upper beam body 21 and joined by spot welding, for example.
The fourth gusset flange 67 is disposed below a rear shelf portion 78 described later, and is disposed at a position overlapping the rear shelf portion 78 in a plan view.
As shown in fig. 2 and 6, the fifth gusset flange 68 extends from the outer edge 61a of the gusset lower surface portion 61 outward in the vehicle width direction in the direction in which the gusset lower surface portion 61 extends. The fifth gusset flange 68 is joined so as to overlap the front end portion 27b of the lower surface portion 27 from the inner side surface portion 24 of the upper beam body 21 over the lower ridge line portion 28.
Here, in the upper beam 16, the lower flange 16b is formed so as not to protrude downward. Therefore, when the fifth gusset flange 68 of the gusset 17 is joined to the lower surface portion 27 of the upper beam body 21, equipment (tool) such as a welding gun (electrode rod) can be applied. Thereby, the fifth gusset flange 68 is joined to the lower surface portion 27, for example, by spot welding.
In this way, the third gusset flange 66 and the fourth gusset flange 67 are joined to the front end portion 24a of the inner side surface portion 24 of the upper beam body 21. Further, the fifth gusset flange 68 is joined to the front end portion 27b of the lower surface portion 27 of the upper beam body 21. Thereby, the gusset 17 is joined to the front end portion 16c of the upper beam 16 (specifically, the upper beam body 21).
As shown in fig. 3 and 4, the gusset lid portion 53 extends (protrudes) outward in the vehicle width direction from the upper end of the outer surface portion 15c of the front end portion 15a of the front side frame 15. Specifically, the gusset lid portion 53 includes a lid body 71, a first lid flange 72, a second lid flange 73, and a third lid flange (upper joining flange) 74.
The gusset body 52 is disposed above the gusset lower surface portion 61. The first lid flange 72 projects from the front edge of the lid body 71 toward the front of the vehicle body. As described above, the first cover flange 72 is joined to the first gusset flange 64, for example, by spot welding from above.
The second lid flange 73 projects rearward of the vehicle body from the rear edge of the lid body 71. As described above, the second cover flange 73 is joined to the second gusset flange 65, for example, by spot welding from above.
The third cover flange 74 extends outward in the vehicle width direction from the outer end 71a of the cover body 71, the outer end 72a of the first cover flange 72, and the outer end 73a of the second cover flange 73. Specifically, the third cover flange 74 is joined so as to overlap the recess 31 and the front end 25b of the upper surface portion 25 from the inner side surface portion 24 of the upper beam body 21 over the upper ridge line portion 26.
Here, in the upper beam 16, an upper flange 16a (see also fig. 2) is formed so as not to protrude upward. Therefore, when the third cover flange 74 of the gusset 17 is joined to the upper surface portion 25 of the upper beam body 21 (specifically, the recess 31 and the distal end portion 25b of the upper surface portion 25), equipment (tool) such as a welding gun (electrode rod) can be applied. Thus, the third lid flange 74 is joined to the recess 31 and the front end 25b of the upper surface portion 25 by, for example, spot welding.
The third cover flange 74 has a front canopy section 77 formed at an end portion on the front side of the vehicle body, and a rear canopy section (canopy section) 78 formed at an end portion on the rear side of the vehicle body. The front canopy section 77 is joined to the upper surface section 25 from the inner surface section 24 of the upper beam body 21 over the upper ridge line section 26. That is, the front shelf portion 77 is formed in a V-shaped cross section. The front canopy section 77 is disposed above the third gusset flange 66, and as described above, is disposed at a position overlapping the third gusset flange 66 in the vertical direction in plan view.
The rear shelf portion 78 is joined to the recessed portion 31 across the upper ridge portion 26 of the upper beam body 21. That is, the rear shelf portion 78 is formed in a V-shaped cross section. The rear shelf portion 78 is disposed above the fourth gusset flange 67, and as described above, is disposed at a position overlapping the fourth gusset flange 67 in the vertical direction in plan view.
The front and rear shelf portions 77 and 78 will be described in detail below.
As described above, according to the vehicle body front portion structure 10 of the embodiment, as shown in fig. 2, 3, and 6, the upper flange 16a of the upper member 16 is not projected upward. Thus, the third lid flange 74 can be joined to the recess 31 of the upper surface portion 25 and the distal end portion 25b of the upper surface portion 25 by spot welding. Further, the lower flange 16b of the upper beam 16 is not extended downward. Thereby, the fifth gusset flange 68 can be joined to the front end portion 27b of the lower surface portion 27 by spot welding.
Thus, when the gusset 17 is joined to the upper beam 16 (specifically, the upper beam body 21), for example, a joining operation by hand such as metal inert gas welding, which hinders (hinders) the step of joining the gusset 17 to the upper beam 16, can be reduced.
The third cover flange 74 of the gusset 17 is joined to overlap the upper surface portion 25 from the inner surface portion 24 of the upper beam body 21 over the upper ridge line portion 26. Therefore, the third cover flange 74 can be positioned in the vehicle width direction and the vertical direction by the upper ridge line portion 26 and the upper surface portion 25, for example.
Further, the fifth gusset flange 68 of the gusset 17 is joined so as to overlap the lower surface portion 27 from the inner surface portion 24 of the upper beam body 21 over the lower ridge portion 28. Therefore, for example, the fifth gusset flange 68 can be positioned in the vehicle width direction and the vertical direction by the lower ridge portion 28 and the lower surface portion 27.
This improves the accuracy of positioning the gusset 17 to the upper beam 16.
In the embodiment, an example in which the third cover flange 74 can be positioned by the upper ridge portion 26, the upper surface portion 25, and the like, and the fifth gusset flange 68 can be positioned by the lower ridge portion 28, the lower surface portion 27, and the like has been described, but the present invention is not limited thereto. As another example, for example, it is also possible to position one of the third cover flange 74 and the fifth gusset flange 68.
The third cover flange 74 of the gusset 17 is joined to overlap the upper surface portion 25 from the inner surface portion 24 of the upper beam body 21 over the upper ridge line portion 26. Further, the fifth gusset flange 68 of the gusset 17 is joined so as to overlap the lower surface portion 27 from the inner surface portion 24 of the upper beam body 21 over the lower ridge portion 28. Therefore, the strength of the joint portion of the gusset 17 to the upper beam 16 (hereinafter, also referred to as joint strength) can be increased.
Thus, for example, when an impact load (front collision load) F (see fig. 1) is input to the front side frame 15 from the front of the vehicle body due to a frontal collision, the joint of the gusset 17 to the upper rail 16 can be suppressed from breaking. Therefore, the input impact load F can be transmitted to the upper beam 16 via the gusset 17.
In the embodiment, the third cover flange 74 is joined to the upper surface portion 25 from the inner surface portion 24 over the upper ridge portion 26, and the fifth gusset flange 68 is joined to the lower surface portion 27 from the inner surface portion 24 over the lower ridge portion 28. As another example, for example, one of the third cover flange 74 and the fifth gusset flange 68 may be joined as in the embodiment.
As shown in fig. 3 and 4, the third cover flange 74 is formed with a front shelf portion 77 and a rear shelf portion 78. The front canopy section 77 extends from the inner side surface section 24 of the upper beam body 21 to the upper surface section 25 via the upper ridge line section 26 by passing over the upper ridge line section 26. Therefore, the joining strength to the upper beam body 21 by the front canopy section 77 can be made strong. The front canopy section 77 is disposed so as to overlap the third gusset flange 66 in plan view.
Further, the rear shelf portion 78 extends from the inner side surface portion 24 of the upper beam body 21 to the upper surface portion 25 via the upper ridge line portion 26 by passing over the upper ridge line portion 26. Therefore, the joining strength to the upper beam body 21 by the rear canopy section 78 can be made strong. The rear shelf portion 78 is disposed so as to overlap the fourth gusset flange 67 in plan view.
Thus, the front and rear shelf sections 77 and 78 having strong bonding strength can be used to suppress: the impact load F (see fig. 1) input by the frontal collision causes the joint portion of the upper beam body 21 of the third gusset flange 66 and the fourth gusset flange 67 to break.
In the embodiment, the example in which the front and rear shelf portions 77, 78 are formed in the third lid flange 74 is described, but the present invention is not limited thereto. As another example, for example, one of the front shelf portion 77 and the rear shelf portion 78 may be formed in the third cover flange 74.
As shown in fig. 1 and 6, the first front flange 45 of the upper beam cover member 22 (i.e., the front end portion of the upper beam cover member 22) is joined to the third gusset flange 66, and the rear end portion 22a of the upper beam cover member 22 is joined to the front pillar 14. Therefore, the upper beam cover member 22 can be integrally formed from the first front flange (front end portion) 45 to the rear end portion 22 a.
Thus, for example, when the impact load F due to a frontal collision is transmitted to the upper beam 16 via the gusset 17, the transmitted impact load can be supported by the upper beam 16.
Further, by integrally forming the upper beam cover member 22 from the first front flange (front end portion) 45 to the rear end portion 22a, it is possible to prevent an unnecessary weak portion from being formed in the upper beam 16 itself.
As shown in fig. 3 and 4, the upper surface portion 25 of the upper beam body 21 is formed with a concave portion 31, and the concave portion 31 is continuous with the upper ridge line portion 26. Further, the third lid flange 74 is joined to the recess 31. Thus, when the gusset 17 is joined to the upper beam body 21, the positioning accuracy of the gusset 17 can be further improved by the recess 31.
Further, the concave portion 31 is continuous with the upper ridge line portion 26 of the upper beam body 21, so that the concave portion 31 can serve also as a reinforcing rib, for example, in the upper surface portion 25 of the upper beam body 21. Thus, the impact load F (see fig. 1) transmitted from the gusset 17 to the upper member 16 by the frontal collision can be efficiently transmitted to the vehicle body rear side of the upper member 16 through the recess 31 (i.e., the rib) and the like.
As shown in fig. 4 and 6, the third cover flange 74 is joined to overlap the upper surface portion 25 of the upper beam body 21 from above. Further, a third gusset flange 66 (see also fig. 7) and a fourth gusset flange 67 are joined so as to overlap the inner surface portion 24 of the upper beam body 21. Further, the fifth gusset flange 68 is joined so as to overlap the lower surface portion 27 of the upper beam body 21.
Here, the upper beam body 21 is formed in a substantially コ -shaped cross section. That is, a space for disposing a device (specifically, an electrode rod) such as spot welding can be secured inside the upper beam body 21. In the upper beam 16, an upper flange 16a is formed so as not to protrude upward, and a lower flange 16b is formed so as not to protrude downward.
Therefore, in the step of joining the third cover flange 74 and the fifth gusset flange 68 to the upper surface portion 25 and the lower surface portion 27 of the upper beam body 21, joining using a device such as spot welding can be performed.
In the step of joining the third gusset flange 66 and the fourth gusset flange 67 to the inner side surface portion 24 of the upper beam body 21, joining using a device such as spot welding may be performed.
Thus, for example, a manual joining operation such as metal inert gas welding can be eliminated, and the joining step can be performed efficiently without hindering the step of joining the gusset 17 to the upper beam 16.
The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.
In addition, the structural elements of the embodiments may be replaced with well-known structural elements as appropriate within a range not departing from the gist of the present invention, and the modifications may be combined as appropriate.
Claims (5)
1. A vehicle body front structure comprising:
an upper beam including an upper beam body having a substantially コ -shaped cross section and an upper beam cover member, the upper beam body being open to the outside in the vehicle width direction, the upper beam cover member being coupled to the upper beam body so as to close an opening of the upper beam body; and
a gusset plate extending outward in the vehicle width direction from a front side frame provided on an inner side in the vehicle width direction of the upper member, connected to the upper member body, and characterized in that the vehicle body front structure
The gusset plate has: and an upper joining flange that extends from an inner surface of the upper beam body on the vehicle width direction inner side, and overlaps the upper surface of the upper beam body over the ridge line portion of the upper beam body.
2. The vehicle body front structure according to claim 1,
the gusset plate has: and a rear joining flange that overlaps, in a plan view, the ceiling portion of the upper joining flange that extends beyond the ridge line portion.
3. The vehicle body front structure according to claim 1,
the front end of the upper beam cover member is joined to the front joining flange of the gusset, and the rear end is joined to the front pillar.
4. The vehicle body front structure according to any one of claims 1 to 3,
the upper surface of the upper beam body has a recess that engages with the upper side engagement flange,
the concave portion is provided continuously with the ridge portion of the upper beam body.
5. The vehicle body front structure according to claim 1,
the gusset plate has:
the upper joining flange overlapping the upper surface of the upper beam body;
a front-side joining flange that is overlapped with the inner side surface of the upper beam body and joins a front end portion of the upper beam cover member;
a rear joining flange that is overlapped with the inner surface of the upper beam body and that is overlapped with a ceiling portion of the upper joining flange that extends over the ridge line portion in a plan view; and
a lower engagement flange overlapping a lower surface of the upper beam body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020201887A JP7177813B2 (en) | 2020-12-04 | 2020-12-04 | Body front structure |
| JP2020-201887 | 2020-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114590322A true CN114590322A (en) | 2022-06-07 |
Family
ID=81803937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111186177.1A Withdrawn CN114590322A (en) | 2020-12-04 | 2021-10-12 | Vehicle body front structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7177813B2 (en) |
| CN (1) | CN114590322A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0419279A (en) * | 1990-05-11 | 1992-01-23 | Nissan Motor Co Ltd | Car body front part structure for automobile |
| JP2013248898A (en) * | 2012-05-30 | 2013-12-12 | Honda Motor Co Ltd | Vehicle body front structure |
| CN106995011A (en) * | 2015-09-29 | 2017-08-01 | 本田技研工业株式会社 | Vehicle body front structure |
| CN108928395A (en) * | 2017-05-29 | 2018-12-04 | 本田技研工业株式会社 | Car body fore part arrangement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6215979B2 (en) | 2016-02-01 | 2017-10-18 | 本田技研工業株式会社 | Auto body structure |
-
2020
- 2020-12-04 JP JP2020201887A patent/JP7177813B2/en active Active
-
2021
- 2021-10-12 CN CN202111186177.1A patent/CN114590322A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0419279A (en) * | 1990-05-11 | 1992-01-23 | Nissan Motor Co Ltd | Car body front part structure for automobile |
| JP2013248898A (en) * | 2012-05-30 | 2013-12-12 | Honda Motor Co Ltd | Vehicle body front structure |
| CN106995011A (en) * | 2015-09-29 | 2017-08-01 | 本田技研工业株式会社 | Vehicle body front structure |
| CN108928395A (en) * | 2017-05-29 | 2018-12-04 | 本田技研工业株式会社 | Car body fore part arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7177813B2 (en) | 2022-11-24 |
| JP2022089471A (en) | 2022-06-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7121615B2 (en) | Joint construction in upper part of center pillar | |
| US6951366B2 (en) | Combined structure of rear part of body of automobile | |
| US9555836B2 (en) | Vehicle side structure | |
| WO2015025781A1 (en) | Structure for front part of vehicle | |
| CA2845771C (en) | Vehicle body top structure | |
| JP5114447B2 (en) | Body superstructure | |
| US20160194033A1 (en) | Vehicle body front portion structure, and vehicle body assembly method | |
| CN106515866A (en) | Vehicle framework structure | |
| JP2017197059A (en) | Side part vehicle body structure of vehicle | |
| JP2013144525A (en) | Vehicle body front structure of vehicle | |
| JP2017197058A (en) | Side part vehicle body structure of vehicle | |
| JP2018024319A (en) | Vehicle pillar structure | |
| US10293859B2 (en) | Side vehicle-body structure of vehicle | |
| JP2010089754A (en) | Roof structure for vehicle body | |
| JP6698393B2 (en) | Body side structure | |
| CN214138710U (en) | Vehicle body side structure | |
| JP2001334957A (en) | Side body structure of automobile | |
| CN112092916B (en) | Upper vehicle body structure of vehicle | |
| CN215475381U (en) | Vehicle body side structure | |
| CN114590322A (en) | Vehicle body front structure | |
| JP7289434B2 (en) | upper body structure | |
| CN114590323B (en) | Front structure of vehicle body | |
| CN114162221B (en) | Roof structure of vehicle | |
| CN114590323A (en) | Vehicle body front structure | |
| US11535302B2 (en) | Front vehicle-body structure of vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220607 |
|
| WW01 | Invention patent application withdrawn after publication |