CN213008024U - Vehicle front structure - Google Patents
Vehicle front structure Download PDFInfo
- Publication number
- CN213008024U CN213008024U CN202021382328.1U CN202021382328U CN213008024U CN 213008024 U CN213008024 U CN 213008024U CN 202021382328 U CN202021382328 U CN 202021382328U CN 213008024 U CN213008024 U CN 213008024U
- Authority
- CN
- China
- Prior art keywords
- absorbing member
- vehicle
- energy
- lower energy
- collision
- 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.)
- Active
Links
- 210000002303 tibia Anatomy 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 210000003127 knee Anatomy 0.000 description 3
- 210000003423 ankle Anatomy 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
Abstract
The utility model provides a vehicle front structure, this vehicle front structure is including installing on the front beam and extending to the lower part energy-absorbing member in vehicle the place ahead, the configuration is at the front bumper energy-absorbing member of the top of lower part energy-absorbing member, and the configuration is at the front bumper cover in the place ahead of front bumper energy-absorbing member and lower part energy-absorbing member, the front end of lower part energy-absorbing member is located the inboard of the lower part of front bumper cover, the rear end of lower part energy-absorbing member is installed on the front beam, the middle zone of the at least car length direction of lower part energy-absorbing member constitutes for, can be flexible portion of tortuous deformation downwards when the front end of lower part energy-absorbing member bears the collision load towards the effect of vehicle rear, in the below of lower part energy-absorbing member, be provided with the front end cover that covers easy flexible portion at least. Based on the above structure of the utility model, can reduce the collision load that is exerted on people's shin bone when the vehicle front portion hits the human body.
Description
Technical Field
The utility model relates to a vehicle front portion structure.
Background
In recent years, vehicles have mostly adopted a vehicle front structure in which, when a vehicle front hits a human body, collision energy is absorbed by members on the vehicle to protect the human body. In such a vehicle front structure, for example, a lower energy-absorbing member is provided below a front bumper energy-absorbing member, and a front bumper cover is disposed to cover a front portion of the front bumper energy-absorbing member and a front portion of the lower energy-absorbing member.
In the above structure, the lower energy absorbing member has an elongated opening formed in a front portion thereof, and a hinge portion is provided in a rear portion thereof. When the front of the vehicle hits a person, the elongate opening is broken and the lower energy-absorbing member is allowed to topple over from the hinge portion, thereby enabling absorption of the impact energy.
In general, in cars and sports cars, in order to sweep a human body onto a front hatch when a front portion of the vehicle hits the human body, a lower energy absorbing member is disposed at a lower position, i.e., a position where the lower energy absorbing member can contact with a lower portion of a shin bone of the human body when the front portion of the vehicle hits the human body.
However, in a vehicle such as a Sport Utility Vehicle (SUV), for example, the lower energy absorbing member has to be disposed at a position where the lower energy absorbing member comes into contact with the upper portion (knee side) of the tibia when the front portion of the vehicle collides with a human body, because the lower energy absorbing member is high in height to the ground. Therefore, the human body cannot be swept to the front deck cover when the front part of the vehicle collides with the human body, so that the tibia of the human body is easily damaged or even fractured due to large collision load.
In view of the above, the inventors of the present invention have conducted intensive studies on how to reduce the collision load applied to the tibia of a human when the front portion of the vehicle collides with the human body.
SUMMERY OF THE UTILITY MODEL
In view of the above-described problems, it is an object of the present invention to provide a vehicle front structure that can reduce a collision load applied to a tibia of a human when a vehicle front collides with the human body.
As a technical solution to solve the technical problem, the utility model provides a vehicle front structure, this vehicle front structure is in including installing on the front beam and extending to vehicle the place ahead lower part energy-absorbing member, configuration the front bumper energy-absorbing member of the top of lower part energy-absorbing member and configuration front bumper energy-absorbing member with the front bumper cover in the place ahead of lower part energy-absorbing member, the front end of lower part energy-absorbing member is located the inboard of the lower part of front bumper cover, the rear end of lower part energy-absorbing member is installed on the front beam, its characterized in that: at least a middle region in the vehicle longitudinal direction of the lower energy-absorbing member is configured as a flexible portion that is flexible downward when a front end portion of the lower energy-absorbing member receives a collision load acting toward the rear of the vehicle, and a front undercover that covers at least the flexible portion is provided below the lower energy-absorbing member.
The utility model discloses an above-mentioned vehicle front portion structure's advantage lies in, when the vehicle front portion hit the human body, the easy inflection portion can zigzag deformation and absorb some collision energy downwards to, the easy inflection portion after zigzag deformation can be with the preceding end cover down-pressing, so can further absorb some collision energy, promptly, collision load is dispersed. Therefore, the impact load (bending moment) acting on the tibia of the person can be reduced, and the damage to the tibia can be reduced.
In the vehicle front structure according to the present invention, it is preferable that the flexible portion is configured to be bent and deformed in a V-shape in a side view when the collision load acts thereon.
With the above configuration, since the flexible portion of the lower energy-absorbing member is deformed in a zigzag manner downward when viewed from the side, the V-shaped bottom portion can more easily press the front sole cover downward, and the collision load acting on the tibia of the person can be more effectively reduced.
Drawings
Fig. 1 is a longitudinal sectional view showing a vehicle front structure according to an embodiment of the present invention, and shows a state at an initial collision stage when a vehicle front collides with a simulated collision body.
Fig. 2 is a vertical sectional view showing a state at a second collision stage after the state shown in fig. 1.
Fig. 3 is a vertical sectional view showing a state at a third collision stage after the state shown in fig. 2.
FIG. 4 is a schematic diagram showing a beam model acting on a simulated impact body for bending moment.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Fig. 1 is a longitudinal sectional view showing a vehicle front portion structure of the present embodiment. As shown in fig. 1, the vehicle front structure of the present embodiment includes a front bumper energy-absorbing member (also referred to as an upper energy-absorbing member) 1, a lower energy-absorbing member 2, a front bumper cover 3, and a front undercover 4.
The front bumper energy-absorbing member 1 is attached to the front portion of the front bumper reinforcement 5 and is located at a substantially middle portion in the vehicle height direction of the front portion of the vehicle.
The lower energy-absorbing member 2 is disposed below the front bumper energy-absorbing member 1, is spaced apart from the front bumper energy-absorbing member 1 by a predetermined distance, and extends from the radiator support lower member 6 to the front of the vehicle.
The front end 21 of the lower energy-absorbing member 2 is attached to the front bumper cover 3, and the rear end 22 of the lower energy-absorbing member 2 is attached to the radiator support lower 6.
The front bumper cover 3 is disposed in front of the front bumper energy-absorbing member 1 and the lower energy-absorbing member 2.
The front undercover 4 is disposed below the lower energy-absorbing member 2 and covers the lower energy-absorbing member 2. The front end portion 41 of the front undercover 4 is attached to the lower end of the front bumper cover 3, and the rear end portion 42 of the front undercover 4 is attached to the front cross member 7.
The lower energy absorbing member 2 is configured as a flexible portion that can flex downward when a collision load acts on the front end portion 21 over the entire region in the vehicle longitudinal direction. Specifically, the lower energy-absorbing member 2 (the flexible portion) is configured to be bent downward in a V-shape when viewed from the side when the collision load is applied.
As shown in fig. 1, the lower energy-absorbing member 2 is configured to extend from the front end portion 21 to the vehicle rear lower side steeply and then to extend gently and further to extend horizontally to the vehicle rear side by a predetermined length. Here, the portion extending steeply obliquely is referred to as an anterior inclined portion 23; the portion extending with a gentle slope is referred to as a rear slope portion 24; the horizontally extending portion is referred to as an extending portion 25.
In the lower energy absorbing member 2, a connecting portion (front connecting portion) between the front inclined portion 23 and the rear inclined portion 24 forms a corner projecting downward when viewed from the side; a connecting portion (rear connecting portion) between the rear inclined portion 24 and the extension portion 25 forms a corner projecting downward.
Next, a case where the front portion of the vehicle hits a simulated collision body 10 corresponding to the leg portion of the human body will be described. Fig. 1 shows a state in an initial collision stage in which a front portion of a vehicle collides with a simulated colliding body 10; FIG. 2 is a longitudinal sectional view showing a state at a second collision stage after the state shown in FIG. 1; FIG. 3 is a longitudinal sectional view showing a state at a third collision stage after the state shown in FIG. 2; FIG. 4 is a schematic diagram showing a beam model acting on a simulated impact body for bending moment.
Here, the upper part 11 of the simulated colliding body 10 corresponds to the femur of the human; the lower part 12 of the simulated collision volume 10 corresponds to the human tibia; the middle portion (middle portion 13) in the height direction of the simulated colliding body 10 corresponds to the knee of the human; the lower end 14 of the simulated colliding body 10 corresponds to the ankle of the person.
It is assumed that, when the front portion of the vehicle hits the simulated collision body 10, the front bumper energy-absorbing member 1 collides with the intermediate portion 13 of the simulated collision body 10; the lower energy-absorbing member 2 collides with the lower portion 12 of the simulated colliding body 10.
At the initial collision stage shown in fig. 1, the front bumper cover 3 is deformed so as to approach the front bumper energy-absorbing member 1.
In the second collision stage shown in fig. 2, the entire region of the lower energy-absorbing member 2 is deformed in a zigzag manner downward as viewed from the side, as indicated by a thick line.
In the third collision stage shown in fig. 3, the lower energy-absorbing member 2 is compressed in the vehicle longitudinal direction by the V-shaped bent portion as shown by a thick line, and the bottom portion of the V-shaped bent portion collides with the front undercover 4 to press down the front end portion 41 of the front undercover 4. As a result, the front undercover 4 is inclined forward and downward.
In fig. 2 and 3, the shapes of the lower energy-absorbing member 2 and the under cover 4 at the initial collision stage are shown by a chain line.
As described above, after the collision, the lower energy-absorbing member 2 is deformed in a zigzag manner, and thus can absorb a part of the collision energy, and the under cover 4 is pressed in a state of being inclined downward in the front direction in accordance with the zigzag deformation of the lower energy-absorbing member 2, and thus can further absorb a part of the collision energy. That is, the collision load is dispersed, and the bending moment acting on the lower portion 12 of the simulated colliding body 10 is reduced.
Therefore, according to the above structure of the present invention, when the front portion of the vehicle hits the human body, since the member on the vehicle body can effectively absorb the collision energy at the time of collision, the collision load acting on the tibia of the human body is reduced, so that the damage of the tibia can be reduced.
Fig. 4 is a schematic diagram showing a beam model acting on a simulated impact body 10. As shown in fig. 4, the bending moment M acting on the collision portion of the simulated colliding body 10 colliding with the lower energy-absorbing member 2LCan be calculated by the following calculation formula (1).
ML＝(FL·a2l)/{(a+l)2－b2} (1)
In FIG. 4, FUA load application portion (corresponding to the position of the front bumper energy-absorbing member 1) indicating a load applied to the middle portion 13 of the simulated colliding body 10 by the vehicle body; fLA load application portion (position equivalent to the lower energy-absorbing member 2) indicating a portion of the vehicle body where the vehicle body applies a collision load to the lower portion 12 of the simulated colliding body 10; a represents a load application site FLThe distance to the lower end 14 (corresponding to the position of the ankle) of the simulated colliding body 10; b represents a load application site FUThe distance to the middle portion 13 (corresponding to the position of the knee) of the simulated colliding body 10; l represents a load application site FUTo the load application site FLThe distance to this point.
When the front part of the vehicle collides with the simulated collision body 10, the load application portion FLIs lower than before the collision, and thus the value of the distance a becomes smaller. As can be seen from the calculation formula (1), when the value of the distance a becomes smaller, the bending moment M becomes smallerLThe value of (c) also becomes smaller.
While the embodiments of the present invention have been described in detail, the present invention is not limited to the embodiments described above, and various applications and modifications can be made.
For example, in the above embodiment, the entire region of the lower energy-absorbing member 2 is taken as the flexible portion, but the present invention is not limited to this, and only the middle region of the lower energy-absorbing member 2 in the vehicle length direction may be taken as the flexible portion.
Claims (2)
1. A vehicle front structure comprising a lower energy-absorbing member mounted on a front cross member and extending to the front of a vehicle, a front bumper energy-absorbing member disposed above the lower energy-absorbing member, and a front bumper cover disposed in front of the front bumper energy-absorbing member and the lower energy-absorbing member, a front end portion of the lower energy-absorbing member being located inside a lower portion of the front bumper cover, a rear end portion of the lower energy-absorbing member being mounted on the front cross member, characterized in that:
at least a middle region of the lower energy-absorbing member in the vehicle longitudinal direction is configured as a flexible portion that is flexible downward when a front end portion of the lower energy-absorbing member receives a collision load acting toward the rear of the vehicle,
a front undercover covering at least the flexible portion is provided below the lower energy absorbing member.
2. The vehicle front structure according to claim 1, characterized in that:
the flexible portion is configured to be bent and deformed in a V-shape in a side view when the collision load is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021382328.1U CN213008024U (en) | 2020-07-14 | 2020-07-14 | Vehicle front structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021382328.1U CN213008024U (en) | 2020-07-14 | 2020-07-14 | Vehicle front structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213008024U true CN213008024U (en) | 2021-04-20 |
Family
ID=75502783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021382328.1U Active CN213008024U (en) | 2020-07-14 | 2020-07-14 | Vehicle front structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213008024U (en) |
-
2020
- 2020-07-14 CN CN202021382328.1U patent/CN213008024U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6513843B1 (en) | Pedestrian protection leg spoiler | |
| US7134700B2 (en) | Bumper for reducing pedestrian injury | |
| US4249632A (en) | Safety device for the protection of pedestrians | |
| US9327675B2 (en) | Vehicle-body front structure of vehicle | |
| US8313129B2 (en) | Energy absorber | |
| EP1726490A1 (en) | Vehicle body front part structure of automobile | |
| US7165794B2 (en) | Passive safety device | |
| CN213008024U (en) | Vehicle front structure | |
| CN102910139B (en) | Vehicle anticollision device capable of protecting shank of pedestrian | |
| CN207089212U (en) | Front bumper endergonic structure for pedestrian protecting | |
| CN1986298B (en) | Pedestrian protection apparatus for vehicle | |
| KR100822927B1 (en) | A bumper for a vehicle | |
| KR100984401B1 (en) | Front end lower stiffner maximizable the protection function and an automobile having thereof | |
| GB2355435A (en) | A vehicle bumper arrangement | |
| CN208842361U (en) | A kind of energy absorption device of automobile | |
| CN201405816Y (en) | Device for protecting vehicles and pedestrians | |
| JP6444824B2 (en) | Bumper absorber | |
| CN109229039A (en) | A kind of energy absorption device of automobile | |
| US20040124667A1 (en) | Bumper device | |
| CN112498286B (en) | Front support and lower support structure for protecting lower leg of pedestrian | |
| CN213473039U (en) | Front collision protection device and vehicle with same | |
| CN106427873A (en) | Driving safety device | |
| KR20050057963A (en) | Bumper for a automobile | |
| KR100704562B1 (en) | Door pannel structure | |
| KR20100049303A (en) | Bumper beam assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |