当机动车发生碰撞时，现有技术大多是通过车身钣金件的溃缩吸收大部分的撞击能，用来保护机动车内成员的人身安全，缺点是：在碰撞事故中车身破损严重，修复费用高，甚至导致整车报废，尤其是车头发生撞击后，容易损坏发动机及其附件，会造成较大的财产损失；部分机动车附加了外保险杠用来减少车损，缺点是破坏了车身外形的美观设计，还增加了车身的轮廓尺寸，并且大多由金属管制成的，在人车事故中会增加对行人的伤害。撞击坚硬物体时的反作用力对车内人员造成极大的伤害。

本发明装置，安装后能保持机动车原有外形，减少撞击事故对车体和车内外人员的损坏。从经济角度看，我国上路的机动车保守数字也有三亿台以上，每年的销售在不断上升，2014年我国销售全球第一，高达3000多万台（全球约15000万台），按照这个数字计算，每台车平均价格5000元安装费用，新旧车按照50%安装率，无疑是个数万亿级的商品市场。

　　When a motor vehicle collision, the prior art is reduced by the collapse of the body to absorb most of the impact of sheet metal can be used to protect the personal safety of the members of a motor vehicle, the disadvantage is: the body in the event of a collision severely damaged, repair costs high, and even lead to vehicle scrapped, especially after the occurrence of front impact, easy to damage the engine and its accessories, will result in a greater loss of property.Some additional vehicles to reduce the outer bumper car damage, the disadvantage is the destruction of the body shape of beautiful design, but also increases the body's overall dimensions. Bumper mostly made of metal tubing in the human car accident will increase pedestrian injury. Reaction when striking a hard object on the occupants cause great harm.

　　Apparatus of the invention, after installation can keep the original appearance of motor vehicles and reduce the impact of accidents and damage to the vehicle body inside and outside staff. From an economic perspective, a conservative figure of road motor vehicles are also more than three hundred million, the annual sales on the rise, in 2014 global sales of the first, up to 30 million units (about 150 million units worldwide), according to the figures , the average price of 5000 yuan per vehicle installation costs, 50% of new cars in accordance with the installation rate, is undoubtedly the number one trillion commodity markets.