CN204479258U - The quick-fried shock table of air bag point - Google Patents

Abstract

The utility model discloses a safety airbag point explosion impact test bench, which comprises a bottom frame, a moving block and an impact object arranged on the moving block and used to hit the air bag, and the moving block is arranged to slide linearly along the horizontal direction on the bottom frame , the bottom frame is provided with a rebound anti-collision device located on the traveling path of the moving block. The airbag point explosion impact test bench of the utility model, during the test, pushes the moving block and the impact object by an external force to obtain the impact velocity, and the airbag that hits the point explosion can collect the data of the sensor installed on the impact head and the image of the high-speed camera Quantitative analysis can be carried out, so that the force relationship between the airbag and the occupant can be measured with higher accuracy, which can be used for CAE benchmarking, through CAE and test mutual verification, optimize the airbag parameters, and improve the airbag's ability to protect the occupant.

Description

Airbag point explosion impact test bench

technical field

The utility model belongs to the technical field of automobile product testing, in particular, the utility model relates to a safety airbag point explosion impact test bench.

Background technique

With the continuous deepening of the research on the safety of car occupants in various countries around the world, China has also increased the research and development of the performance of car safety components. Car companies have increased investment in the research of car seat belts, and have built or are building a number of car safety component laboratories, and have conducted a large number of related tests. There is still a big gap to this goal. The main reason is that foreign multinational car companies and test equipment suppliers still have monopoly influence on the entire auto industry, and the domestic R&D and production of test equipment used in many standards is still in a blank stage.

Airbags, seat belts, seats, steering column, steering wheel, etc. together constitute the vehicle occupant restraint protection system, which is an important part of the restraint system. When a vehicle collides, the ECU collects the collision intensity signal through the sensor of the airbag, and judges it through calculation. , send an ignition signal to the airbag to detonate, and after the airbag is deployed, it will protect the occupant together with the seat belt, reducing the damage to the personnel in the collision.

Although the principle of airbag protection for occupants is very simple, it is difficult to match it actually, because the crash test is an instant thing, and various factors can affect the damage, so in order to make the explosion of the airbag just right, it needs to be optimized There are also many parameters, such as the ignition time, the size of the vent hole, the stiffness of the airbag, etc. The poor matching of these parameters will affect the effect of occupant protection.

During the development of the vehicle restraint system, it was found that the verification of the airbag deployment protection performance can only be verified by the dummy in the vehicle collision and pulley simulation test, and the contact force between the airbag deployment dummy and the airbag can only be roughly obtained. and the airbag deployment form, the magnitude of the interaction force cannot be quantitatively measured. Since the dummy is located in the vehicle, the contact state between the airbag and the dummy cannot be fully observed. Therefore, it is necessary to make an impact test bench to simulate this Validate so that the appropriate data is collected accurately.

Utility model content

The technical problem to be solved by the utility model is to provide an airbag point explosion impact test bench capable of measuring the contact force and contact form of the airbag with a dummy after deployment.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: the safety airbag point explosion impact test bench, including the chassis, the mobile tackle and the impactor that is located on the mobile tackle and used to hit the airbag, and the mobile tackle is placed on the underframe. The upper part is set to slide linearly along the horizontal direction, and the bottom frame is provided with a rebound anti-collision device located on the traveling path of the moving block.

The impacting object is an impacting plate or an impacting ball arranged on the moving block.

The underframe includes a base frame and a sub-frame arranged on the base frame, and the rebound anti-collision device is arranged on the sub-frame.

The sub-frame is provided with a linear slide rail, and the moving block is arranged on the linear slide rail.

The rebound anti-collision device includes a bracket arranged on the sub-frame and an anti-collision bar arranged on the bracket, and the anti-collision bar is located at one side of the moving block.

The safety airbag ignition impact test bench also includes a stay rope for applying tension to the moving block, one end of the stay cord is connected with the moveable block, and the other end is connected with the sub-frame.

The airbag point explosion impact test bench of the utility model, during the test, pushes the moving block and the impact object by an external force to obtain the impact velocity, and the airbag that hits the point explosion can collect the data of the sensor installed on the impact head and the image of the high-speed camera Quantitative analysis can be carried out, so that the force relationship between the airbag and the occupant can be measured with higher accuracy, which can be used for CAE benchmarking, through CAE and test mutual verification, optimize the airbag parameters, and improve the airbag's ability to protect the occupant.

Description of drawings

Fig. 1 is the structural representation of the utility model airbag point detonation impact test bench;

The marks in the above figures are: 1. Rebound anti-collision device; 11. Bracket; 12. Anti-collision bar; 2. Linear slide rail; 3. Moving block; 4. Impactor; 7. Drawstring.

Detailed ways

Next, with reference to the accompanying drawings, through the description of the embodiments, the specific implementation of the present utility model will be further described in detail, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present utility model , and contribute to its implementation.

As shown in Fig. 1, the utility model provides a kind of safety airbag point explosion shock test bench, comprises chassis, moving block 3 and is arranged on moving block 3 and is used for striking the impactor 4 of air bag, and moving block 3 is on the bottom The frame is set to slide linearly along the horizontal direction, and the bottom frame is also provided with a rebound anti-collision device 1 located on the travel path of the mobile tackle 3 . During the test, the hydraulic cylinder of the pedestrian protection test equipment provides the driving power to push the moving block 3 to a set speed, and the impactor 4 installed on the moving block 3 is used to hit the airbag that explodes.

Specifically, as shown in FIG. 1 , the underframe includes a base frame 5 and a sub-frame 6 disposed on the base frame 5 , and the rebound anti-collision device 1 is disposed on the sub-frame 6 . The basic frame 5 is mainly used to fix the test bench on the iron floor to avoid the shaking of the test bench and reduce the impact on the test results, and at the same time as the support of the sub-frame 6 .

Since the relative height of each model is inconsistent, it is necessary to adjust the overall height of the test bench. A 50mm hole is reserved on the sub-frame 6 so as to be combined with the basic bench to achieve the effect of adjusting different heights.

As shown in FIG. 1 , the subframe 6 is provided with a linear slide rail 2 , and the moving tackle 3 is arranged on the linear slide rail 2 . The linear slide rail 2 provides a guarantee for the linear motion of the mobile block 3, and the low friction coefficient, strong rigidity, and high-precision flatness all provide guarantees for the smooth and high-speed movement of the mobile block 3.

As shown in FIG. 1 , the moving block 3 is mainly used for installing the bumper 4 , and the bumping body 4 is a bumping plate or a bumping ball arranged on the moving block 3 . 40 installation holes are reserved on the mobile block 3, and the angle between each two installation holes is 4.5°, which can realize the installation of impact plates or balls at different angles, so as to simulate different models and tests at different angles.

As shown in FIG. 1 , in this embodiment, the impactor 4 is a flat plate, which is mainly used to simulate the chest of a dummy. The impactor 4 is processed into a spherical shape, which is used to simulate the head of a dummy.

As shown in FIG. 1 , the rebound anti-collision device 1 includes a bracket 11 arranged on the subframe 6 and an anti-collision bar 12 arranged on the bracket 11 , and the anti-collision bar 12 is located at one side of the moving tackle 3 . The length direction of the anti-collision rod 12 is perpendicular to the moving direction of the moving tackle 3, and the rebound anti-collision device 1 can effectively prevent the rebound after the collision between the moving tackle 3 and the airbag in the test, effectively prevent the moving tackle 3 from rebounding, and damage pedestrians Protect test equipment.

As shown in FIG. 1 , the airbag point explosion impact test bench also includes a stay rope 7 for applying tension to the moving tackle 3 , one end of the stay rope 7 is connected with the moveable tackle 3 , and the other end is connected with the subframe 6 . Stay cord 7 is positioned at the below of anti-collision bar 12, and anti-collision bar 12 is also located between the connection point of stay cord 7 and moving tackle 3 and the connection point of stay cord 7 and subframe 6. The stay rope 7 can pull the moving block 3 when the moving block 3 runs to the end of the track, so as to prevent the moving block 3 from flying out of the track, thereby ensuring the reuse of the impact test bench and protecting the test sample.

Judging from the actual use of the airbag detonation test bench, the acceleration sensor can be attached to the mobile block 3 to accurately collect the dynamic performance parameters of the airbag after the detonation of the airbag, and the dynamic video of the airbag pressure feed can be clearly captured by the high-speed camera , through the analysis of these dynamic data, the efficiency of airbag performance optimization can be greatly improved.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited by the above-mentioned method, as long as various insubstantial improvements are made by adopting the method concept and technical solution of the utility model, or Directly applying the ideas and technical solutions of the utility model to other occasions without improvement is within the protection scope of the utility model.

Claims (6)

1. the quick-fried shock table of air bag point, it is characterized in that: comprise underframe, movable block and to be located on movable block and rammer for clashing into air bag, movable block is the setting of linear slide in the horizontal direction on underframe, and underframe is provided with the bounce-back collision avoidance system be positioned on movable block travel path.

2. the quick-fried shock table of air bag point according to claim 1, is characterized in that: described rammer is be located at the dull and stereotyped or impact bead of shock on described movable block.

3. the quick-fried shock table of air bag point according to claim 1 and 2, is characterized in that: described underframe comprises basic framework and is located at the sub-frame on basic framework, and described bounce-back collision avoidance system is located on sub-frame.

4. the quick-fried shock table of air bag point according to claim 3, it is characterized in that: described sub-frame is provided with line slide rail, described movable block is located on line slide rail.

5. the quick-fried shock table of air bag point according to claim 3, is characterized in that: described bounce-back collision avoidance system comprises the support be located on described sub-frame and the crash bar be located on support, and crash bar is positioned at the side of described movable block.

6. the quick-fried shock table of air bag point according to claim 3, is characterized in that: also comprise the stay cord for applying pulling force to described movable block, stay cord one end is connected with movable block, and the other end is connected with described sub-frame.