CN213921222U - Vehicle body front structure - Google Patents
Vehicle body front structure Download PDFInfo
- Publication number
- CN213921222U CN213921222U CN202022762491.7U CN202022762491U CN213921222U CN 213921222 U CN213921222 U CN 213921222U CN 202022762491 U CN202022762491 U CN 202022762491U CN 213921222 U CN213921222 U CN 213921222U
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- vehicle
- bumper beam
- load transmission
- side frame
- body front
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Abstract
The utility model provides a vehicle body front structure can convey impact load when bumping effectively with simple structure's load transmission portion to restrain the fracture of bumper beam and side frame in the non-collision side when the skew collides. The vehicle body front structure includes: a bumper beam bracket disposed in front of the vehicle; a bumper beam disposed in front of the bumper beam bracket; the side frame is arranged behind the bumper beam bracket; and a load transmission unit provided behind the bumper beam bracket and outside the side frame in the vehicle width direction, wherein the load transmission unit is fixed to both the bumper beam bracket and the bumper beam by bolts at least at two points above and below.
Description
Technical Field
The utility model relates to a vehicle body front structure.
Background
In the related art, since a pair of left and right side frames (side frames) extending in the vehicle front-rear direction and a bumper beam (bumper beam) connected to the side frames are provided as a vehicle body front structure, it is possible to absorb an impact load by crushing the side frames at the time of a vehicle front collision. Further, in the technique proposed in patent document 1, since the protruding portion extending outward in the vehicle width direction from the side frame is provided, the impact load at the time of collision can be transmitted to the side frame via the protruding portion. However, such a protrusion is inefficient in transmitting an impact load when an offset collision (offset collision) occurs, and how to maintain the connection relationship between the bumper beam and the side frame on the other side, which is not a collision, when an offset collision occurs is not considered.
[ Prior art documents ]
[ patent document ]
[ patent document 1] Japanese patent laid-open publication No. 2013-212757
SUMMERY OF THE UTILITY MODEL
The utility model provides a vehicle body front structure can convey impact load when bumping effectively with simple structure's load transmission portion to restrain the fracture of bumper beam and side frame in the non-collision side when the skew collides.
The utility model provides a vehicle body front structure, include: a bumper beam bracket disposed in front of the vehicle; a bumper beam disposed in front of the bumper beam bracket; the side frame is arranged behind the bumper beam bracket; and a load transmission unit provided behind the bumper beam bracket and outside the side frame in the vehicle width direction, wherein the load transmission unit is fixed to both the bumper beam bracket and the bumper beam by bolts at least at two points above and below.
In an embodiment of the present invention, the load transmission part is formed in a rectangular shape as viewed in a vertical direction of the vehicle to form a box-like structure.
In an embodiment of the present invention, the load transmission unit includes an upper plate, a side plate, and a lower plate, the upper plate is connected to the lower plate above and below the side plate, and the upper plate is connected to the lower plate, and the lower plate is viewed in a vertical direction of the vehicle as a quadrangle, the load transmission unit is connected to the upper plate, the side plate, or at least any one of the left and right sides of the lower plate is provided with a flange to connect to the side frame and a lower member disposed outside the side frame in a vehicle width direction.
In an embodiment of the present invention, the load transmission part is provided with a flange corresponding to one side of the side frame in the vehicle width direction, and is fixed to the side frame by welding via the flange.
In an embodiment of the present invention, a lower member is provided on an outer side of the side frame in the vehicle width direction, and the load transmission portion is provided with a flange corresponding to one side of the lower member in the vehicle width direction, and is fixed to the lower member by welding via the flange.
In an embodiment of the present invention, the bolts at least at two points above and below are disposed on one side of the load transmission part close to the side frame.
Based on the above, in the vehicle body front structure of the present invention, the bumper beam support is disposed in the front of the vehicle, the bumper beam is disposed in the front of the bumper beam support, the side frame is disposed at the rear of the bumper beam support, and the load transmission portion is disposed at the rear of the bumper beam support and outside of the side frame in the vehicle width direction. Further, the load transmission part is fixed to both the bumper beam holder and the bumper beam by connecting bolts at least at two points above and below. In this way, the impact load generated in front of the vehicle can be effectively transmitted to the side frame via the load transmission portion provided behind the bumper beam bracket, and the load transmission portion is connected to both the bumper beam bracket and the bumper beam at least at two points above and below by the bolt to maintain the connection relationship between the bumper beam and the side frame on the non-collision side. Accordingly, the vehicle body front structure of the present invention can effectively transmit the impact load at the time of collision with the load transmission portion having a simple structure, and suppress the breakage of the bumper beam and the side frame at the non-collision side at the time of offset collision.
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic plan view of a vehicle body front structure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the vehicle body front structure shown in FIG. 1 taken along line I-I';
FIG. 3 is a perspective view of the vehicle body front structure shown in FIG. 2;
fig. 4 is a perspective view schematically illustrating a modification of the vehicle body front structure shown in fig. 2.
Description of reference numerals:
100: a vehicle body front structure;
110: a bumper beam bracket;
120: a bumper beam;
130: a side frame;
140. 240: a load transmission unit;
142. 242: an upper plate;
142a, 142b, 144a, 146a, 242 b: a flange;
144. 244: a side plate;
146. 246: a lower plate;
150a, 150 b: a bolt;
160: a lower member;
d: a vehicle down direction;
fr: a vehicle front direction;
l: a vehicle left direction;
rr: a vehicle rear direction;
r: a vehicle right direction;
u: vehicle up direction.
Detailed Description
Fig. 1 is a schematic plan view of a vehicle body front structure according to an embodiment of the present invention, fig. 2 is a schematic cross-sectional view of the vehicle body front structure shown in fig. 1 taken along line I-I', fig. 3 is a schematic perspective view of the vehicle body front structure shown in fig. 2, and fig. 4 is a schematic perspective view of a modification of the vehicle body front structure shown in fig. 2. In the present embodiment, the vehicle body front structure 100 refers to a structure in a vehicle at a vehicle body front portion. A specific structure of the vehicle body front structure 100 will be described below with reference to fig. 1 to 4.
Referring to fig. 1, in the present embodiment, a vehicle body front structure 100 includes a bumper beam bracket 110, a bumper beam 120, a side frame 130, a load transmission unit 140, and other components. The bumper beam bracket 110 is disposed in front of (i.e., on a side facing in the vehicle front direction Fr) a vehicle (not shown). The bumper beam 120 is disposed forward (i.e., on the side facing the vehicle front direction Fr) of the bumper beam bracket 110. The side frame 130 is disposed rearward of the bumper beam bracket 110 (i.e., on the side facing the vehicle rear direction Rr). The load transmission unit 140 is provided behind the bumper beam bracket 110 (i.e., on the side facing the vehicle rear direction Rr). In this way, the impact load generated in the front of the vehicle can be efficiently transmitted to the side frame 130 provided behind the bumper beam bracket 110 via the load transmission portion 140 provided behind the bumper beam bracket 110.
In detail, in the present embodiment, as shown in fig. 1 and 2, the load transmission unit 140 is provided on the outer side of the side frame 130 in the vehicle width direction. The vehicle width direction outer side means that, in a case where the side frame 130 shown in fig. 1 and 2 is attached to the vehicle left side (i.e., the side facing the vehicle left direction L), the vehicle right side, which is the side facing the vehicle right direction R, of the side frame 130 is the vehicle width direction inner side, and the vehicle left side, which is the side facing the vehicle left direction L, of the side frame 130 is the vehicle width direction outer side. In this way, the load transmission unit 140 is disposed on the outer side of the side frame 130 in the vehicle width direction, which means that the load transmission unit 140 is disposed on the vehicle left side, which is the side of the side frame 130 facing the vehicle left direction L in the present embodiment.
In the present embodiment, as shown in fig. 1 and 2, the load transmission unit 140 is fixed by connecting the bolts 150a and 150b to both the bumper beam bracket 110 and the bumper beam 120 at least two points, i.e., at the upper and lower points (i.e., at the side facing the vehicle upper direction U and at the side facing the vehicle lower direction D). That is, the bolts 150a and 150b pass through the load transmission part 140, the bumper beam bracket 110, and the bumper beam 120 to fix the three together. Preferably, the bolts 150a and 150b at least at two points, upper and lower, are provided on the load transmission part 140 on the side close to the side frame 130. In this way, the load transmission part 140 has a greater thickness at the fixing points (i.e., the bolts 150a and 150b), and the fixing effect by the bolts 150a and 150b is better, so that the fixing points on the non-collision side are less likely to break.
Further, in the present embodiment, the non-collision side means that, in the case where the side frame 130 shown in fig. 1 and 2 is attached to the vehicle left side (i.e., the side facing the vehicle left direction L), when a left-side offset collision occurs in front of the vehicle, the vehicle left side (i.e., the side facing the vehicle left direction L) that is the outside in the vehicle width direction is the collision side, and the vehicle right side (i.e., the side facing the vehicle right direction R) that is the inside in the vehicle width direction is the non-collision side. In a normal case, even if a left-side offset collision occurs in front of the vehicle, the right side of the vehicle, i.e., the non-collision side, is broken (i.e., the bumper beam is separated from the side frame, which may cause parts, such as an engine, not shown, to fall out from the front side of the vehicle). In contrast, in the load transmission unit 140 of the present embodiment, since the bolts 150a and 150b are fastened to the side close to the side frame 130, the thickness of the fastening points (i.e., the bolts 150a and 150b) is increased, and the fastening effect of the bolts 150a and 150b is excellent, so that the fastening points on the right side of the vehicle, i.e., the non-collision side, are less likely to break.
In the present embodiment, as shown in fig. 1, the load transmission unit 140 has a box-like structure in a quadrangular shape as viewed in the vehicle vertical direction (i.e., the vehicle vertical direction U and the vehicle vertical direction D). More specifically, referring to fig. 3, in the present embodiment, the load transmission portion 140 includes an upper plate 142, a side plate 144, and a lower plate 146. The upper plate 142 and the lower plate 146 are connected above and below the side plate 144 (i.e., the vehicle upper direction U and the vehicle lower direction D), respectively, and the upper plate 142 and the lower plate 146 are formed into a quadrangular shape (e.g., substantially rectangular shape) as viewed in the vehicle vertical direction (i.e., the vehicle upper direction U and the vehicle lower direction D), thereby constituting a box-like structure as shown in fig. 1, which is quadrangular as viewed in the vehicle vertical direction (i.e., the vehicle upper direction U and the vehicle lower direction D), as the load transmission section 140. Further, the side frame 130 is provided with a back plate (back plate) to constitute a closed cross section (that is, the side frame 130 shown in fig. 2 is a closed frame shape), so that one side of the box-shaped structure as the load transmission part 140 can be connected to the back plate constituting the closed cross section of the side frame 130, and the other side can be connected to the lower member 160 (shown in fig. 1 and 2).
That is, the load transmission unit 140, which is formed into a box-like structure having a quadrangular shape as viewed in the vehicle up-down direction (i.e., the vehicle up direction U and the vehicle down direction D), has opposite side edges in the vehicle width direction (i.e., the vehicle left direction L and the vehicle right direction R), and can be connected to the side frame 130 and the lower member 160 (shown in fig. 1 and 2) provided on the outer side in the vehicle width direction (in the present embodiment, the vehicle left side, i.e., the side facing the vehicle left direction L) of the side frame 130. That is, the load transmission unit 140 is provided with flanges (such as the flanges 142a and 142b of the upper plate 142, the flange 144a of the side plate 144, and the flange 146a of the lower plate 146 in fig. 3) on both the left and right sides of at least one of the upper plate 142, the side plate 144, and the lower plate 146, and is connected to the side frame 130 and the lower member 160 provided on the outer side in the vehicle width direction of the side frame 130 (in the present embodiment, the vehicle left side, i.e., the side facing the vehicle left direction L), so that the range in which the load transmission unit 140 contacts the lower member 160 and the side frame 130 can be increased, that is, the load transmission unit can be connected to the lower member 160 and the side frame 130 more firmly.
As described above, the impact load occurring in the front of the vehicle can be effectively transmitted to the box-like structure as the load transmission portion 140 when contacting the lower member 160 located on the outer side in the vehicle width direction (the vehicle left side in the present embodiment, that is, the side facing the vehicle left direction L) than the side frame 130, and further, to the side frame 130. Further, the load transmission section 140 of the present embodiment, which is configured in a box-like structure having a quadrangular shape as viewed in the vehicle vertical direction (i.e., the vehicle vertical direction U and the vehicle vertical direction D), can suppress the occurrence of the fracture on the non-collision side as described above, compared to the conventional technique in which a bumper beam is fixed by one plate. Furthermore, the aforementioned breakage can be suppressed not only by increasing the thickness of the load transmission part 140 at the fixing point (i.e., the bolts 150a and 150b), but also by providing the load transmission part 140 in a box-like structure.
Similarly, referring to fig. 4, in the modification of fig. 4, the load transmission part 240 includes an upper plate 242, a side plate 244, and a lower plate 246. The upper plate 242 and the lower plate 246 are connected above and below the side plate 244 (i.e., the vehicle upper direction U and the vehicle lower direction D), respectively, and the upper plate 242 and the lower plate 246 are formed in a quadrangular shape (e.g., substantially trapezoidal shape) as viewed in the vehicle upper-lower direction (i.e., the vehicle upper direction U and the vehicle lower direction D), thereby constituting a box-like structure having a quadrangular shape as viewed in the vehicle upper-lower direction (i.e., the vehicle upper direction U and the vehicle lower direction D) as the load transmission part 240. Furthermore, the load transmission part 240 is configured to have a size corresponding to one side (for example, the flange 242a) of the side frame 130 constituting the closed cross section larger than a size corresponding to the other side (for example, the flange 242b) of the lower member 160 (shown in fig. 1 and 2), so that the coupling effect between the load transmission part 240 and the side frame 130 can be increased, but the present invention is not limited thereto. As described above, the shape of the load transmission parts 140 and 240 is not limited as long as the load transmission parts 140 and 240 have a box-like structure in which they are formed in a quadrangular shape when viewed in the vehicle vertical direction (i.e., the vehicle vertical direction U and the vehicle vertical direction D), and have opposite side edges to be connected to the side frames 130 and the lower member 160 (shown in fig. 1 and 2), thereby increasing the range in which the load transmission parts 140 and 240 are in contact with the lower member 160 and the side frames 130.
Further, in the present embodiment, as shown in fig. 3, the load transmission portion 140 is provided with flanges (e.g., a flange 142a at the upper plate 142, a flange 144a at the side plate 144, etc.) at a side of the side frame 130 in the vehicle width direction (i.e., a side toward the vehicle right direction R in the present embodiment) and is welded and fixed to the side frame 130 via the flanges 142a, 144a, etc. Similarly, the load transmission portion 140 is provided with flanges (such as the flange 142b on the upper plate 142, the flange 146a on the lower plate 146, and the like) on a side (in the present embodiment, the side toward the vehicle left direction L) corresponding to the lower member 160 in the vehicle width direction (i.e., the vehicle left direction L and the vehicle right direction R), and is fixed by welding to the lower member 160 via the flanges 142b, 146 a.
As can be seen, the load transmission unit 140 can be welded and fixed to the lower member 160 positioned on the vehicle left side (i.e., the side facing the vehicle left direction L) and the side frame 130 positioned on the vehicle right side (i.e., the side facing the vehicle right direction R) by flanges provided on at least one of the left and right sides of the upper plate 142, the side plate 144, or the lower plate 146. In this way, the load transmission part 140 is fixed by the bolts 150a and 150b at the portion corresponding to the bumper beam 120 to suppress the above-described breakage, and the impact load is not easily applied to the portion corresponding to the side frame 130 and the lower member 160 in the non-breakage direction, so that the number of parts is reduced by welding and fixing. However, the present invention is not limited to the fixing manner of the load transmission part 140, the side frame 130 and the lower member 160, and it can be adjusted according to the requirement.
In summary, the present invention provides a vehicle body front structure in which a bumper beam bracket is disposed in front of a vehicle, a bumper beam is disposed in front of the bumper beam bracket, a side frame is disposed behind the bumper beam bracket, and a load transmission portion is disposed behind the bumper beam bracket and outside the side frame in a vehicle width direction. Further, the load transmission part is fixed to both the bumper beam holder and the bumper beam by connecting bolts at least at two points above and below. Preferably, the load transmission part is formed in a rectangular shape as viewed in the vehicle vertical direction to constitute a box-like structure. In this way, the impact load generated in front of the vehicle can be effectively transmitted to the side frame via the load transmission portion provided behind the bumper beam bracket, and the load transmission portion is connected to both the bumper beam bracket and the bumper beam at least at two points above and below by the bolt to maintain the connection relationship between the bumper beam and the side frame on the non-collision side. Accordingly, the vehicle body front structure of the present invention can effectively transmit the impact load at the time of collision with the load transmission portion having a simple structure, and suppress the breakage of the bumper beam and the side frame at the non-collision side at the time of offset collision.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the embodiments of the present invention, and the essence of the corresponding technical solutions is not disclosed.
Claims (6)
1. A vehicle body front structure characterized by comprising:
a bumper beam bracket disposed in front of the vehicle;
a bumper beam disposed in front of the bumper beam bracket;
the side frame is arranged behind the bumper beam bracket; and
a load transmission section provided behind the bumper beam bracket and outside the side frame in the vehicle width direction,
the load transmission part is fixed to both the bumper beam bracket and the bumper beam by connecting bolts at least at two points above and below.
2. The vehicle body front structure according to claim 1,
the load transmission part is in a quadrangular shape in the vertical direction of the vehicle to form a box-shaped structure.
3. The vehicle body front structure according to claim 2,
the load transmission part includes an upper plate, a side plate, and a lower plate, the upper plate and the lower plate are respectively connected above and below the side plate, and the upper plate and the lower plate are quadrangular as viewed in the vehicle vertical direction,
the load transmission part is provided with flanges on both left and right sides of at least one of the upper plate, the side plate, or the lower plate, and is connected to the side frame and a lower member provided on an outer side of the side frame in the vehicle width direction.
4. The vehicle body front structure according to claim 1,
the load transmission part is provided with a flange corresponding to one side of the side frame in the vehicle width direction, and is fixed to the side frame by welding via the flange.
5. The vehicle body front structure according to claim 1,
a lower member is provided on an outer side of the side frame in the vehicle width direction,
the load transmission part is provided with a flange on a side corresponding to the lower member in the vehicle width direction, and is fixed by welding to the lower member via the flange.
6. The vehicle body front structure according to claim 1,
the bolts at least at two points above and below are provided on the load transmission part on a side close to the side frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022762491.7U CN213921222U (en) | 2020-11-25 | 2020-11-25 | Vehicle body front structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022762491.7U CN213921222U (en) | 2020-11-25 | 2020-11-25 | Vehicle body front structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213921222U true CN213921222U (en) | 2021-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022762491.7U Active CN213921222U (en) | 2020-11-25 | 2020-11-25 | Vehicle body front structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213921222U (en) |
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2020
- 2020-11-25 CN CN202022762491.7U patent/CN213921222U/en active Active
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