25 Offset collision is not unfamiliar to everyone. It seems that many people make corresponding judgments on the strength of the body structure based on these details, but this has resulted in a "test-oriented" structure. In terms of design, because all crash tests are focused on the driver's side, some car companies have begun to strengthen countermeasures for this part, and the passenger side is naturally ignored. Fortunately, the latest rise of China Insurance Cars The safety index C-IASI was officially announced at the end of last year. It completed the first member-side frontal 25-offset collision public demonstration test at the Chongqing test base for the first time. Of course, the most important thing to pay attention to is the last two words "test", which also means In the near future, C-IASI will fill the domestic gap in this area, and the impact will be quite far-reaching. It is also on the agenda of various car companies to improve their vehicle structure design, and in the latest patent In the application information, Chery declared a new front cabin safety structure invention, targeting 25-degree offset collision.
Since it is an invention patent application, it is naturally the first. Of course, this first is also a new front body structure developed based on the car company's own understanding of the structural level. Others may have other solutions. The patent was applied for. In September last year, before the start of the C-IASI test, in-depth research was carried out. In fact, the solution is very simple. It is clearly stated in the invention abstract: two front longitudinal beams and two front wheelhouse side reinforcement beams arranged symmetrically on the left and right. The characteristic is that a transverse connecting beam is provided between the front longitudinal beam and the front wheelhouse side reinforcing beam on the corresponding side, and a reinforcing rod is provided in the transverse connecting beam; one end of the reinforcing rod extends out of the corresponding transverse connecting beam. One end of the beam penetrates the corresponding front longitudinal beam and is fixedly connected to the front longitudinal beam. The other end of the reinforcing rod penetrates the other end of the corresponding transverse connecting beam and is firmly connected to the transverse connecting beam. A reinforcing plate is also provided between the reinforcing rod and the outer side wall corresponding to the front longitudinal beam. The present invention allows the front longitudinal beam to participate in the entire 25-min offset collision process through the vehicle body structure, and shares the force and energy generated during the 25-min offset collision process, thereby effectively improving the small-offset collision performance of the car and achieving the reduction of The purpose of deforming the passenger compartment is to reduce damage to the occupants.
What’s more eye-catching is that this new structure is not only for the driver’s side, or for the co-pilot’s side, but for left and right bows, both; it itself states that it is not made for examination testing. .
Since it was just declared in September last year, it is unlikely to be added to existing models immediately. Of course, the structures are interoperable. In fact, the current model frameworks are roughly similar. Once it is verified that it is feasible, it should be modified. It’s not too difficult. Of course, from a cost perspective, it will definitely increase. If high-strength steel is used, the cost will increase further. As for the model that may be used for the first time, just from the application drawing itself, it is closer to Star Road. TX (picture below), mainly in terms of the protective structure of the air-conditioning air inlet, Xingtu TX is closer to the patent application diagram.
▲The picture above is the cabin structure diagram of Xingtu TX
Having written many collision accident analyzes in the early stage, Chery has developed the 3R-Body body structure based on many years of experience in the body structure level. The platform has been applied to the Arrizo and Tiggo series, and the actual combat results are quite eye-catching. Now, corresponding structural enhancements have been made for the 25 offset bumper, and the bow can be fired left and right. It seems that a lot of effort has been put into the research on the structural level. , it is difficult to draw a conclusion on when to adopt it, and because it is not good at publicity, it may not be known immediately if it is actually adopted.
This article comes from the author of Autohome Chejiahao and does not represent the views and positions of Autohome.