CN210174806U - Instrument panel front end energy absorption system considering pedestrian protection - Google Patents
Instrument panel front end energy absorption system considering pedestrian protection Download PDFInfo
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- CN210174806U CN210174806U CN201920083011.9U CN201920083011U CN210174806U CN 210174806 U CN210174806 U CN 210174806U CN 201920083011 U CN201920083011 U CN 201920083011U CN 210174806 U CN210174806 U CN 210174806U
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- instrument panel
- clamping jaw
- metal plate
- defrosting air
- energy absorption
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Abstract
The utility model relates to an instrument panel front end energy absorption system considering pedestrian protection, which comprises an instrument panel front defrosting air channel, an instrument panel body, a front windshield glass, a black glue surface and a front wall metal plate; the front windshield glass is connected with the black glue surface, two ends of the instrument board body are respectively connected with the front windshield glass and the instrument board front defrosting air channel, and the front wall metal plate is respectively connected with the black glue surface and the instrument board front defrosting air channel; the instrument panel body, the instrument panel front defrosting air channel and the front wall metal plate form a cavity; the instrument board body positioned in the cavity is provided with a plurality of first strength weakening structures. Compared with the prior art, the utility model discloses an above everywhere reduction structure, deformation space reach the target that reduces the head injury, have that installation space is little, with low costs, energy-absorbing advantage such as effectual.
Description
Technical Field
The utility model relates to a pedestrian protection device of vehicle especially relates to an instrument board front end energy-absorbing system who considers pedestrian's protection.
Background
It is statistical that more than 2 million people die of Chinese from 1998 every year of traffic accidents, accounting for about 30% of all traffic accident deaths. Wherein the number of deaths caused by the drunk driving accident is more than 2 ten thousand, and more than 1 ten thousand deaths are innocent pedestrians. The traffic accidents in foreign countries are more accidents caused by collision between cars, and more accidents caused by collision between people in China. In a road traffic accident in the european union, the number of deaths of pedestrians is 9 times that of passengers in the vehicle.
The C-NCAP is used for carrying out a collision safety performance test on a new vehicle type purchased in the market according to a stricter and more comprehensive requirement than the existing mandatory standard in China, a pedestrian protection test in 7 months in 2018 is included in the C-NCAP, and legs and heads are main key collision protection areas. In the new vehicle test evaluation standards in europe, strict regulations are imposed on four aspects of in-vehicle adult protection, in-vehicle child protection, out-vehicle pedestrian protection, and safety assistance functions. Automobile manufacturers must fully meet the safety regulations in developing new vehicles in order to market their products in the european market. Furthermore, the european union also indicates that greater pressure will be placed on automotive manufacturers in 2020 with regard to protecting road vulnerable groups.
At present, at the front windshield glass department of instrument board front end, because the joint fixed strength of instrument board and automobile body is too big, cause great injury to pedestrian's head, the utility model discloses a only to passive protection collision buffer system scope, under the condition that aim at does not increase whole car cost, fall to minimum to the injury of pedestrian's head.
Except for a passive protection pedestrian protection system, an active protection hood system, an intelligent safety protection system and an automobile pedestrian safety airbag system are generally arranged on high-grade automobile types, and the cost is relatively high. The basic situation of each system is as follows:
active protection hood system: by utilizing the engine hood lifting technology, the engine is instantly raised when the automobile collides, so that a human body collides on a flexible and smooth surface instead of a hard automobile shell. After a person is collided, the vehicle can automatically start the engine cover ejection control module, and an ejection device arranged in the vehicle can instantly lift the engine cover, namely, an air cushion is cushioned below the vehicle when the person falls down.
Intelligent security protection system: the intelligent vehicle safety protection system can actively protect pedestrians, and timely inform a driver before an accident occurs, so that traffic accidents are avoided or harm is reduced to the minimum. The system comprises a safety system, a danger early warning system, an anti-collision system and the like, and relates to a sensor technology, a communication technology, an information display technology, a driving state monitoring technology and the like; these in-vehicle devices include sensors, lidar, infrared and ultrasonic sensors, blind spot detectors, etc. mounted at various portions of the vehicle body, have an accident monitoring function, can provide necessary information around the vehicle and the vehicle itself to the driver at any time by means of sound, images, etc., and can automatically or semi-automatically perform vehicle control, thereby effectively preventing accidents from occurring.
Pedestrian air bag system outside the car: a pedestrian safety air bag system outside a vehicle takes an air bag as a collision buffer device, and the safety air bag is arranged near an engine cover and a front windshield and used in cooperation with the engine cover and the front windshield to avoid the collision of a human body with the front windshield of the vehicle. The bonnet airbag begins to deploy above the bumper immediately adjacent to the bumper. The pre-collision is triggered by a collision early warning sensor, and the inflation is completed within 50-75 microseconds. The inflated safety air bag is unfolded at the position between the two headlights and extends upwards to the surface of the engine cover from the top surface of the bumper, so that the safety of the head of the child and the legs of the adult is ensured.
To most middle and low end motorcycle types on the market at present, what most adopted is passive protection pedestrian system, and this patent sets up the structure that easily bursts to contract, warp at the instrument board front end and reaches the energy-absorbing, reduces the purpose to pedestrian's head injury.
There is a scheme chinese patent CN 203005549U at present, an instrument board front end region structure of considering pedestrian's protection, it passes through the utility model discloses an aim can be realized through following technical scheme:
A. the utility model provides a consider instrument board front end region structure of pedestrian protection, includes preceding windshield, black glue face, instrument board, prevents hot wall and lower automobile body assembly, preceding windshield and black glue face connect, the instrument board connect preceding windshield and prevent hot wall respectively, lower automobile body assembly connect black glue face and prevent hot wall respectively, black glue face, instrument board and prevent that hot wall encloses into a first cavity, prevent that hot wall tip and black glue face enclose into a triangle-shaped cavity, lower automobile body assembly and prevent that hot wall encloses into a second cavity.
B. The vertical distance between the upper part of the instrument panel and the connecting point of the instrument panel and the firewall is larger than 90 mm.
C. The instrument panel is connected with the front windshield glass through the weakened metal plate support, the instrument panel is adjusted to be installed in an upper-lower two-stage mode, a cavity with a large enough middle area is formed, and the front end of the instrument panel can be effectively collapsed when the head of a pedestrian collides.
D. The mounting points on the two sides are directly connected by adopting a metal plate with a weakened design.
In the scheme, the mode A is adopted, the cavity is enlarged, the requirement on the inner space at the front end of the instrument panel is high, the mode B is adopted, the distance between the instrument panel and the firewall is required to be larger than 90mm, but the height of an instrument panel air duct assembly cannot reach 90mm due to the modeling and the arrangement of internal parts of some vehicle types, and the requirement on the larger space distance is also provided for the space of departments.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an instrument board front end energy-absorbing system who considers pedestrian protection in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
a front-end energy absorption system of an instrument panel considering pedestrian protection comprises a front defrosting air duct of the instrument panel, an instrument panel body, front windshield glass, a black glue surface and a front wall metal plate; the front windshield glass is connected with the black glue surface, two ends of the instrument board body are respectively connected with the front windshield glass and the instrument board front defrosting air channel, and the front wall metal plate is respectively connected with the black glue surface and the instrument board front defrosting air channel;
the instrument panel body, the instrument panel front defrosting air channel and the front wall metal plate form a cavity; the instrument board body positioned in the cavity is provided with a plurality of first strength weakening structures. The first strength weakening structure enables the front windshield glass to collide with the instrument panel body when being impacted by the head, so that the front windshield glass deforms and collapses.
The first strength weakening structure is a notch structure with a local thickness reduced.
The defrosting air duct in front of the instrument panel is of a U-shaped structure, and the vertical distance between the joint of the vertical part of the U-shaped structure and the instrument panel body and the front windshield glass is more than 45 mm.
The lower part of the front defrosting air duct of the instrument panel is provided with a clamping jaw which is clamped with the end part of the front wall metal plate; the clamping jaw comprises an upper clamping jaw and a lower clamping jaw, and a second strength weakening structure is arranged on the upper clamping jaw.
Specifically, the second strength weakening structure is: the thickness of the upper clamping jaw is gradually reduced from the contact point of the upper clamping jaw and the front wall metal plate to the connection point of the upper clamping jaw and the front defrosting air duct of the instrument panel; the thickness of the clamping jaw at the connecting point is 40-60% of that of the clamping jaw at the contact point.
Preferably, the thickness of the clamping jaw at the contact point is 3mm, and the thickness of the clamping jaw at the connection point is 1.5 mm.
Simultaneously in order to guarantee the intensity of this joint jack catch, be equipped with the strengthening rib on going up the joint jack catch, be equipped with third intensity reduction structure on this strengthening rib. The strength can be ensured, and certain deformation can be generated during impact with certain strength.
The third strength weakening structure is a structure in which a local thickness becomes smaller.
In order to further absorb energy, a compression deformation structure is arranged on the front wall metal plate. The clamping jaw of the defrosting air duct in front of the instrument panel drives the compression deformation structure of the front wall metal plate to deform when stressed.
The compression deformation structure is downward convex.
In order to ensure a certain energy absorption space, the vertical distance between the joint of the front wall metal plate and the front defrosting air duct of the instrument panel and the front windshield glass is more than 70 mm.
The utility model discloses a reduction structure and the target that reduces the head injury are reached in the deformation space of each department, have solved following problem: the problem that the strength of the front end of the instrument panel is too high to meet the head collision requirement of pedestrian protection is solved; the requirement that a larger cavity section is required for buffering and energy absorption is met, and the requirement on the required distance of an internal cavity is smaller; the implementation mode of energy absorption of the energy absorption structure at the front end of the instrument panel is solved without increasing the cost of medium and low vehicle types; the optimization of the performance is realized under the limited cost.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the requirement of energy absorption through a large-sized cavity in the prior art is improved, and the application range is enlarged;
(2) the requirement of buffer distance is improved, so that the occupied space inside is smaller;
(3) an instrument board mounting bracket is not additionally arranged, so that cost and precision control are facilitated;
(4) the requirement for pedestrian protection is met by arranging a plurality of strength weakening structures.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the picture, 1 is preceding windscreen, and 2 is the instrument board body, and 3 are defrosting wind channel before the instrument board, 4 enclose the panel beating before for, and 5 are the ebonite face, and A is first intensity weakened structure, and B is second intensity weakened structure, and C is third intensity weakened structure, and D is the compression deformation structure, and L1 is vertical distance, and L2 is vertical distance.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Examples
An instrument panel front end energy absorption system considering pedestrian protection is shown in figure 1 and comprises an instrument panel front defrosting air duct 3, an instrument panel body 2, a front windshield glass 1, a black glue surface 5 and a front wall metal plate 4; the front windshield glass 1 is connected with the black glue surface 5, two ends of the instrument panel body 2 are respectively connected with the front windshield glass 1 and the instrument panel front defrosting air channel 3, and the front wall metal plate 4 is respectively connected with the black glue surface 5 and the instrument panel front defrosting air channel 3; the instrument panel body 2, the front defrosting air duct 3 and the front wall metal plate 4 form a cavity to form a collapsible space; a plurality of first strength weakening structures A are arranged on the instrument board body 2 positioned in the cavity; the first strength weakening structure a is a notch structure with a locally reduced thickness. The front defrosting air duct 3 of the instrument panel is of a U-shaped structure, and in order to ensure a certain energy absorption space, the vertical distance L1 between the joint of the vertical part of the U-shaped structure and the instrument panel body 2 and the front windshield glass 1 is more than 45 mm. The vertical distance L2 between the joint of the front wall metal plate 4 and the instrument panel front defrosting air duct 3 and the front windshield glass 1 is more than 70 mm.
The front wall metal plate 4 is clamped with the lower part of the U-shaped structure of the instrument panel front defrosting air channel 3, in particular to a clamping jaw is arranged at the lower part of the instrument panel front defrosting air channel 3 and is clamped with the end part of the front wall metal plate 4; the joint jack catch includes joint jack catch and lower joint jack catch, and the contact point along last joint jack catch and preceding enclose panel beating 4 is to the tie point in last joint jack catch and instrument board front defrosting wind channel 3, and the thickness of going up the joint jack catch reduces gradually, and the design here is second intensity weakened structure B, and the thickness of joint jack catch is 1.5mm on the contact point department, and the thickness of joint jack catch is 3mm on the tie point department. Simultaneously in order to guarantee this intensity of going up the joint jack catch, should go up and be equipped with the strengthening rib on the joint jack catch, be equipped with third intensity weakened structure C on this strengthening rib, specifically be the structure that local thickness diminishes.
In order to further absorb energy, a compression deformation structure D, namely a downward convex structure, is arranged on the front wall metal plate 4, so that the clamping jaw of the defrosting air duct 3 in front of the instrument panel drives the deformation characteristic D of the front wall metal plate 4 to deform when being stressed.
The embodiment solves the problem that the strength of the front end of the instrument panel is too high and cannot meet the head-collision requirement of pedestrian protection by arranging the deformation space and the strength weakening structure arranged around the deformation space, has smaller required installation space, small requirement on the required distance of a cavity in an automobile and wide application range, and particularly solves the problem of realizing the energy absorption of the energy absorption structure at the front end of the instrument panel without increasing the cost of medium and low vehicle types; the optimization of the performance is realized under the limited cost.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (8)
1. An instrument panel front end energy absorption system considering pedestrian protection comprises an instrument panel front defrosting air duct (3), an instrument panel body (2), front windshield glass (1), a black glue surface (5) and a front wall metal plate (4); the front windshield glass (1) is connected with the black glue surface (5), two ends of the instrument panel body (2) are respectively connected with the front windshield glass (1) and the instrument panel front defrosting air channel (3), and the front wall metal plate (4) is respectively connected with the black glue surface (5) and the instrument panel front defrosting air channel (3);
the defrosting air duct is characterized in that a cavity is formed by the instrument panel body (2), the instrument panel front defrosting air duct (3) and the front wall metal plate (4); a plurality of first strength weakening structures (A) are arranged on the instrument board body (2) positioned in the cavity;
the lower part of the front defrosting air duct (3) of the instrument panel is provided with a clamping jaw which is clamped with the end part of the front wall metal plate (4); the clamping jaw comprises an upper clamping jaw and a lower clamping jaw, and a second strength weakening structure (B) is arranged on the upper clamping jaw;
and a compression deformation structure (D) is arranged on the front wall metal plate (4).
2. The front end energy absorption system for pedestrian protection of the claim 1, wherein the first strength weakening structure (a) is a notch structure with a local thickness decreasing.
3. The front-end energy absorption system for the instrument panel considering pedestrian protection is characterized in that the front defrosting air duct (3) is of a U-shaped structure, and the vertical distance (L1) between the joint of the vertical part of the U-shaped structure and the instrument panel body (2) and a front windshield glass (1) is more than 45 mm.
4. The front-end energy absorption system of the instrument panel considering pedestrian protection as claimed in claim 1, wherein the thickness of the upper clamping jaw is gradually reduced along a contact point of the upper clamping jaw and the front wall metal plate (4) to a connection point of the upper clamping jaw and the front defrosting air duct (3) of the instrument panel; the thickness of the clamping jaw at the contact point is 40-60% of that of the clamping jaw at the connecting point.
5. The front-end energy absorption system of the instrument panel considering pedestrian protection is characterized in that the upper clamping jaw is provided with a reinforcing rib, and the reinforcing rib is provided with a third strength weakening structure (C).
6. An energy absorption system according to claim 5, characterized in that said third strength weakening structure (C) is a structure with a local thickness decreasing.
7. An energy absorbing system according to claim 1, characterized in that the compression deformation structure (D) is downwardly convex.
8. An energy absorption system at the front end of an instrument panel considering pedestrian protection as claimed in claim 1, characterized in that the vertical distance (L2) between the junction of the front wall sheet metal (4) and the front defrosting duct (3) and the front windshield (1) is greater than 70 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920083011.9U CN210174806U (en) | 2019-01-17 | 2019-01-17 | Instrument panel front end energy absorption system considering pedestrian protection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920083011.9U CN210174806U (en) | 2019-01-17 | 2019-01-17 | Instrument panel front end energy absorption system considering pedestrian protection |
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| Publication Number | Publication Date |
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| CN210174806U true CN210174806U (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920083011.9U Active CN210174806U (en) | 2019-01-17 | 2019-01-17 | Instrument panel front end energy absorption system considering pedestrian protection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113928259A (en) * | 2021-09-01 | 2022-01-14 | 浙江吉利控股集团有限公司 | Vehicle collision buffer and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113928259A (en) * | 2021-09-01 | 2022-01-14 | 浙江吉利控股集团有限公司 | Vehicle collision buffer and vehicle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20200730 Granted publication date: 20200324 |
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| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20230730 Granted publication date: 20200324 |