CN117125019A - Protection device for improving head collision and suction performance of automobile pedestrians - Google Patents
Protection device for improving head collision and suction performance of automobile pedestrians Download PDFInfo
- Publication number
- CN117125019A CN117125019A CN202210557163.4A CN202210557163A CN117125019A CN 117125019 A CN117125019 A CN 117125019A CN 202210557163 A CN202210557163 A CN 202210557163A CN 117125019 A CN117125019 A CN 117125019A
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- China
- Prior art keywords
- bumper
- bracket
- automobile
- protection device
- fixedly connected
- 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.)
- Pending
Links
- 238000010521 absorption reaction Methods 0.000 claims abstract description 32
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 206010019196 Head injury Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R2021/343—Protecting non-occupants of a vehicle, e.g. pedestrians using deformable body panel, bodywork or components
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to an automobile protection device, in particular to a protection device for improving the collision and absorption performance of the head of an automobile pedestrian, which is arranged at the front end of an automobile body and comprises a bumper skin, an engine cover fixed on the automobile body and in clearance fit with the bumper skin, an automobile body support piece arranged at the inner side of the bumper skin and in clearance fit with the engine cover, and also comprises a bumper energy absorption bracket, a bumper reinforcing bracket and a bumper support bracket which are arranged at the inner side of the bumper skin; the upper end of the bumper energy absorption bracket is fixedly connected with the bumper skin and the vehicle body supporting piece respectively, and the lower end of the bumper energy absorption bracket is fixedly connected with the bumper supporting bracket; the bumper support bracket is fixed on the vehicle body support member; the bumper reinforcing support is fixedly arranged on the inner wall of the bumper skin, and the upper end of the bumper reinforcing support is fixedly connected with the bumper energy absorbing support. Compared with the prior art, the invention effectively realizes the absorption of the energy impact force in the direction of the impact force energy transmission, thereby reducing the damage to the heads of pedestrians.
Description
Technical Field
The invention relates to an automobile protection device, in particular to a protection device for improving the head collision and absorption performance of an automobile pedestrian.
Background
The collision energy absorption area is designed to gradually deform the vehicle body when collision occurs so as to absorb most of collision energy generated in an accident, and the strong collision force born by pedestrians can be greatly reduced after the vehicle body is changed into the deformable design.
The concept of the collision energy absorption area is first proposed in the 60 s of the 20 th century, and the buffering energy absorption area must be designed into an 'external soft internal rigid' structure, namely, the junction between the buffering energy absorption area and the passenger safety area is designed into a structure with larger rigidity, and the periphery of the buffering energy absorption area is designed into a structure with smaller rigidity and better buffering energy absorption.
Because the structural characteristics of the automobile are limited, the lateral and upper collision resistance of the buffer energy absorbing area is poor, and the front collision resistance and the rear collision resistance are relatively good.
At present, the energy-absorbing mounting bracket is made of PC-PBT/POM material, and is assembled and connected with the bumper skin in the up-down direction; all the spaces in the front-back direction are released; however, the matching size qualification rate of the actual whole vehicle bumper and the engine cover is poor, and the control is only controlled by means of high-cost electronic components after the whole vehicle collides with the pedestrian (the engine cover is sprung up, so that the head of the pedestrian is directly lifted up); at the same time, the opening device can not be started due to the influence of electronic interference occasionally, and energy can not be absorbed in the direction towards the downside of the ground. The safety performance of the vehicle is still required to be further improved due to the problems.
Disclosure of Invention
The invention aims to solve at least one of the problems and provide a protection device for improving the head collision and absorption performance of an automobile pedestrian, which effectively realizes that when the whole automobile collides with the pedestrian in the running process (or in a stop state), the head contact position absorbs the energy impact force in the impact force energy transmission direction through a differential wall thickness structure and a crumple (such as multiple C-shaped, arch-shaped, pagoda-shaped and other energy absorption equivalent structures) structure, thereby reducing the head injury to the pedestrian.
The aim of the invention is achieved by the following technical scheme:
the protection device for improving the collision and absorption performance of the head of the automobile pedestrian is arranged at the front end of the automobile body and comprises a bumper skin, an engine cover, an automobile body supporting piece, a bumper energy absorbing bracket, a bumper reinforcing bracket and a bumper supporting bracket, wherein the engine cover is fixed on the automobile body and is in clearance fit with the bumper skin;
the upper end of the bumper energy absorption bracket is fixedly connected with the bumper skin and the vehicle body supporting piece respectively, and the lower end of the bumper energy absorption bracket is fixedly connected with the bumper supporting bracket;
the bumper support bracket is fixed on the vehicle body support piece;
the bumper reinforcing support is fixedly arranged on the inner wall of the bumper skin, and the upper end of the bumper reinforcing support is fixedly connected with the bumper energy absorbing support.
Preferably, the bumper energy absorbing bracket is fixedly connected with the bumper supporting bracket through a crumple structure.
Preferably, the bumper energy absorbing bracket is of a multiple C-shaped structure, an arch-shaped structure or a pagoda-shaped structure.
Preferably, the bumper energy absorbing bracket is of a double C-shaped structure.
Preferably, the bumper energy absorbing bracket is of a differential wall thickness structure.
Preferably, the bumper energy absorbing bracket is fixedly connected with the bumper skin through clamping, welding or bonding.
Preferably, the bumper energy absorbing bracket is fixedly connected with the bumper skin through a fastener.
Preferably, the bumper support bracket is fixedly connected with the vehicle body support member through bolts.
Preferably, the bumper energy absorbing bracket and the bumper reinforcing bracket are fixedly connected through clamping, welding or bonding.
Preferably, the bumper energy absorbing bracket is fixedly connected with the bumper reinforcing bracket through a fastener.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention relates to a protection device for improving the head collision energy absorption performance of an automobile pedestrian, which can effectively realize that when the whole automobile collides with the pedestrian in the running process (or in a stop state), the head contact position can absorb the energy impact force in the direction of impact force energy transmission through a differential wall thickness structure and a crumple (such as a multiple C-shaped, arch-shaped, pagoda-shaped and other energy absorption equivalent structure) structure, thereby reducing the head injury to the pedestrian.
2. The bumper energy-absorbing bracket is a stable triangle constructed by multiple C-shaped structural features, the anti-overturning structural features and the supporting feature arrangement method can be constructed, the head regulation performance advantage of the whole vehicle pedestrian protection is ensured, and meanwhile, the size matching qualification rate of the bumper assembly and the engine cover is effectively improved, so that the collision energy-absorbing performance can be improved, and the yield of products can be improved through the use of the invention.
3. When the head of a pedestrian collides with the whole vehicle, the energy can be absorbed by 25-30% through the multiple C-shaped structure and the differential wall thickness structure of the bumper energy absorption bracket; after energy is continuously transmitted to the Q position of the bumper support bracket mark, the energy is continuously absorbed through the crumple structure; when the instantaneous impact force of the head of the pedestrian reaches the fracture stress critical value of the energy-absorbing bracket material, the crumple structure is broken; finally, the injury severity of impact force to pedestrian protection is reduced.
Drawings
FIG. 1 is a schematic diagram of the front view of the protection device of the present invention;
FIG. 2 is a schematic side view of the protection device of the present invention;
FIG. 3 is a schematic rear view of the protection device of the present invention;
FIG. 4 is a schematic exploded view of the structure of the protection device of the present invention;
FIG. 5 is a schematic structural view of a bumper energy absorbing bracket;
FIG. 6 is a schematic view of a partial enlarged structure of a bumper energy absorbing bracket;
FIG. 7 is a schematic structural view of a bumper stay;
FIG. 8 is a schematic view of a partially enlarged structure of a bumper stay;
FIG. 9 is a schematic side view of a bumper energy absorbing bracket;
FIG. 10 is a schematic partial cross-sectional view of a bumper skin and bumper energy absorbing bracket attachment structure;
FIG. 11 is a schematic partial cross-sectional view of a bumper energy absorbing bracket and body support connection structure;
FIG. 12 is a schematic view of an assembled structure of the protection device of the present invention;
in the figure: 1-a bumper skin; 2-engine cover; 3-a body support; 4-a bumper energy absorbing bracket; 5-bumper reinforcement brackets; 6-bumper support brackets; 7-bolts.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Example 1
1-12, a protection device for improving the head collision and absorption performance of an automobile pedestrian is arranged at the front end of an automobile body and comprises a bumper skin 1, an engine cover 2 fixed on the automobile body and in clearance fit with the bumper skin 1, an automobile body support piece 3 arranged on the inner side of the bumper skin 1 and in clearance fit with the engine cover 2, a bumper energy absorption bracket 4 arranged on the inner side of the bumper skin 1, a bumper reinforcement bracket 5 and a bumper support bracket 6;
the upper end of the bumper energy absorption bracket 4 is fixedly connected with the bumper skin 1 and the vehicle body support piece 3 respectively, and the lower end is fixedly connected with the bumper support bracket 6;
the bumper support bracket 6 is fixed to the vehicle body support 3;
the bumper reinforcement bracket 5 is fixedly arranged on the inner wall of the bumper skin 1, and the upper end of the bumper reinforcement bracket is fixedly connected with the bumper energy absorption bracket 4.
More specifically, in the present embodiment:
the whole body consists of a bumper energy absorbing bracket 4, a bumper reinforcing bracket 5 and a bumper supporting bracket 6 which are arranged in a bumper skin 1 and a bonnet 2 (the bumper skin 1 and the bonnet 2 are respectively and fixedly connected with a vehicle body through conventional fasteners, and the bumper skin 1 and the bonnet 2 are arranged in a clearance fit mode, as shown in fig. 9-12), and the bumper supporting bracket 6 is fixed on a vehicle body supporting piece 3 through a plurality of pairs of bolts 7 which are arranged up and down, and the structure of the bumper energy absorbing bracket is shown in fig. 7; the bumper energy absorbing bracket 4 is fixedly connected to the upper part of the bumper supporting bracket 6, and is a main component for absorbing energy, as shown in fig. 5, the bumper supporting bracket 6 and the bumper supporting bracket 6 are fixed through the crumple structure shown in fig. 6 and 8, and when the impact exceeds the stress, the bumper supporting bracket and the bumper supporting bracket can break to absorb the impact force. The bumper energy absorbing bracket 4 adopts a double C-shaped structure, as shown in fig. 9, the upper part of the bumper energy absorbing bracket is fixedly connected with the end part of the bumper skin 1 through a buckle, and the bottom of the bumper energy absorbing bracket is fixed with the bumper supporting bracket 6 through a crumple structure after passing through two 180-degree turning (namely, two C-shaped). As shown in fig. 11, a slightly thick wall surface is arranged at the clamping position of the bumper skin 1, so that the whole body presents a differential wall thickness structure, and the energy absorption effect is further improved; near its location of engagement with the bumper skin 1, the attachment is also achieved with the body support 3 by means of bolts 7. The bumper reinforcement bracket 5 is fixedly arranged on the inner side wall of the bumper skin 1, and the upper end of the bumper reinforcement bracket is fixedly connected with the bumper energy absorption bracket 4 through a buckle, so that all parts of the whole protection device are mutually connected to realize integral stability and fixation.
When the head of a pedestrian collides with the whole vehicle, the energy is absorbed by 25-30% through the multiple C-shaped structure and the differential wall thickness structure of the bumper energy absorption bracket 4; after the energy continues to be transferred to the bumper support bracket 6 to identify the "Q" (fig. 12) position, the energy can be continuously absorbed by the crush structure (the connecting portion of the bumper energy absorbing bracket 4 and the bumper support bracket 6); when the instantaneous impact force of the head of the pedestrian reaches the critical value of the breaking stress of the bumper energy-absorbing bracket 4 material, the crumple structure breaks, and finally the injury severity of the impact force on the pedestrian protection is reduced. Further, the energy-absorbing bracket 4 is of a multiple C-shaped structure, the constructed triangular robust feature realizes the design of overturning support arrangement influenced by gravity, and the size matching qualification rate of the bumper assembly and the engine cover 2 is effectively improved.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (10)
1. The protection device for improving the collision and absorption performance of the head of an automobile pedestrian is arranged at the front end of an automobile body and comprises a bumper skin (1), an engine cover (2) fixed on the automobile body and in clearance fit with the bumper skin (1) and an automobile body support piece (3) arranged on the inner side of the bumper skin (1) and in clearance fit with the engine cover (2), and is characterized by further comprising a bumper energy absorption bracket (4), a bumper reinforcing bracket (5) and a bumper support bracket (6) which are arranged on the inner side of the bumper skin (1);
the upper end of the bumper energy absorption bracket (4) is fixedly connected with the bumper skin (1) and the vehicle body supporting piece (3) respectively, and the lower end of the bumper energy absorption bracket is fixedly connected with the bumper supporting bracket (6);
the bumper support bracket (6) is fixed on the vehicle body support piece (3);
the bumper reinforcement bracket (5) is fixedly arranged on the inner wall of the bumper skin (1), and the upper end of the bumper reinforcement bracket is fixedly connected with the bumper energy absorption bracket (4).
2. The protection device for improving the head impact absorbing performance of an automobile pedestrian according to claim 1, wherein the bumper energy absorbing bracket (4) is fixedly connected with the bumper supporting bracket (6) through a crumple structure.
3. The protection device for improving the head impact absorbing performance of the automobile pedestrian according to claim 2, wherein the bumper energy absorbing bracket (4) is of a multiple C-shaped structure, an arch-shaped structure or a pagoda-shaped structure.
4. A protection device for improving the head impact absorbing performance of an automobile pedestrian according to claim 3, wherein the bumper energy absorbing bracket (4) has a double C-shaped structure.
5. The protection device for improving the head impact absorbing performance of an automobile pedestrian according to claim 1, wherein the bumper energy absorbing bracket (4) is of a differential wall thickness structure.
6. The protection device for improving the head impact absorbing performance of the automobile pedestrian according to claim 1, wherein the bumper energy absorbing bracket (4) is fixedly connected with the bumper skin (1) through clamping, welding or bonding.
7. The protection device for improving the head impact absorbing performance of the automobile pedestrian according to claim 1, wherein the bumper energy absorbing bracket (4) is fixedly connected with the bumper skin (1) through a fastener.
8. The protection device for improving the head impact absorbing performance of an automobile pedestrian according to claim 1, wherein the bumper support bracket (6) is fixedly connected with the automobile body support (3) through bolts (7).
9. The protection device for improving the head impact absorbing performance of the automobile pedestrian according to claim 1, wherein the bumper energy absorbing bracket (4) is fixedly connected with the bumper reinforcing bracket (5) through clamping, welding or bonding.
10. The protection device for improving the head impact absorbing performance of the automobile pedestrian according to claim 1, wherein the bumper energy absorbing bracket (4) is fixedly connected with the bumper reinforcing bracket (5) through a fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210557163.4A CN117125019A (en) | 2022-05-19 | 2022-05-19 | Protection device for improving head collision and suction performance of automobile pedestrians |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210557163.4A CN117125019A (en) | 2022-05-19 | 2022-05-19 | Protection device for improving head collision and suction performance of automobile pedestrians |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117125019A true CN117125019A (en) | 2023-11-28 |
Family
ID=88853282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210557163.4A Pending CN117125019A (en) | 2022-05-19 | 2022-05-19 | Protection device for improving head collision and suction performance of automobile pedestrians |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117125019A (en) |
-
2022
- 2022-05-19 CN CN202210557163.4A patent/CN117125019A/en active Pending
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