Impact energy absorption device
An energy-absorbing device and taper hole technology, applied in the direction of bumpers, etc., can solve the problems of tearing, structural rupture, easy to damage to the geometric shape of punching and folding
Inactive Publication Date: 2019-06-04
METAL INDS RES & DEV CENT
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Problems solved by technology
However, after the punching and flanging process of the aforementioned sub-components, it is easy to produce tearing crack defects around the holes, so that the structure may break during the impact process, resulting in discontinuous impact energy absorption.
The punching and flanging process may be completed before the trapezoidal folding process, which is not easy in the trapezoidal sheet folding process, and it is easy to damage the completed punching and flanging geometry; Stamping from the inside and from the inside to the outside each time requires an increase in molds, man-hours and costs
Method used
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[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
[0023] First please refer to figure 2 , image 3 and Figure 4 , Figure 5 shown. The impact energy-absorbing device 2 of this embodiment reduces the degree of deformation and damage of a protected object B by deforming and absorbing external impact energy. The structure of the impact energy-absorbing device 2 includes: a base 21, an axial collapse A shrinkage part 22 and an energy transmission part 23; the base 21 can be fixed to the protected object B (generally referring to the extended structure outside the vehicle's passenger compartment, such as the front, rear and side beams) by using commonly used screw connection fixing technology, The top surface 211 of this base 21...
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The invention provides an impact energy absorption device. The impact energy absorption device comprises a base, an axial crumple piece, a top plate and an energy transmission piece. The base is fixedto a protected object, and a taper hole is formed in the top face. The bottom end surface of a metal hollow column of the axial crumple piece is jointed with the top surface of the base. The energy transmission piece is provided with a stress plate and a guide column protruding outwards, the stress plate is arranged on the top face of the metal hollow column in an overlapped mode, the guide column is inserted into the position, corresponding to the taper hole, in the metal hollow column, and the outer diameter of the guide column is smaller than the maximum diameter of the taper hole, and theinner diameter of the guide column is larger than the minimum diameter of the taper hole. The anti-deformation rigidity of the axial crumple piece is smaller than that of the base, the top plate andthe guide column, and the anti-deformation rigidity of the guide column is smaller than that of the taper hole.
Description
technical field [0001] The present invention relates to an impact energy-absorbing device, in particular to an impact energy-absorbing device that combines an energy transmission component assembly and an energy absorbing component assembly to reduce the distortion of the component structure. Background technique [0002] There are many types of energy absorbing structures currently used in vehicle collision impacts, such as the US 6231095B1 patent document, which is a channel-type energy absorption unit 1 for vehicle collision impact systems, please refer to Figure 1A and 1B shown. The channel type energy absorbing unit 1 can absorb impact energy and prevent or minimize damage to the vehicle frame rail 14 under impact. Its basic embodiment is a tube 11 , one end of which is flared at a hole 121 in an end plate 12 and welded. When the channel type energy absorbing unit 1 is axially loaded, the tube 11 splits, peels off and reverses to absorb most of the energy impact. Th...
Claims
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IPC IPC(8): B60R19/34
Inventor 童培钧林典永王智楷汪立德
Owner METAL INDS RES & DEV CENT