Collision protection device and automobile

Abstract

The invention provides a collision protection device and an automobile, relating to the technical field of automobile collision protection. The collision protection device includes a first elastic element and a second elastic element; the first end of the first elastic element is connected with the first body member, the second end of the first elastic element for connection with the first end ofthe second elastic element, and the second end of the second elastic element is connected with the second body member. When a low-speed collision occurs, the first body member is subjected to the collision so as to compress the first elastic element, and the first elastic element absorbs collision energy; when a high-speed collision occurs, the first body member is subjected to the collision to compress the first elastic element, and the first elastic element is capable of compressing the second elastic element such that the first elastic element and the second elastic element simultaneously absorb collision energy. An automobile includes a collision protection device. The problems of high cost, complex structure and high maintenance cost of low speed collision of the existing device are alleviated.

Description

technical field [0001] The invention relates to the technical field of automobile collision protection, in particular to a collision protection device and an automobile. Background technique [0002] The most popular automotive bumper assembly today includes the bumper beam, bumper attachments, and foam between the bumper beam and the bumper, which is flexible and deformable at small load levels for pedestrian protection , In certain collision situations, protect pedestrians from direct collisions with hard rigid structures (such as bumper beams, front longitudinal beams, etc.). [0003] In addition, the design of automobiles in the industry generally has the following requirements. In a very low speed range such as 4km / h, the motor vehicle remains undamaged. In this speed range, pedestrian protection may not be considered due to the low speed. At relatively low speeds, the damage to the vehicle should be as small as possible during collisions; when colliding at relatively ...

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Problems solved by technology

[0005] However, the bumper devices in patents DE102010054641A1 and DE102012112636A1 require collision sensors or pre-collision sensors, which are costly, complicated in structure, and less reliable than pure mechanical devices; the pedestrian protection device in patent CN107148373A belongs to pure mechanical devices, but various types of automobiles The components are basically thin-walled parts. If the structure described in the patent has a large wall thickness, it will affect the lightweight index of the car. If the wall thickness is small, it will not achieve the functions described in the patent, thereby affecting the pedestrian protection device. normal use

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