SU982946A1 - Vehicle bumper - Google Patents

Description

(54) VEHICLE BUMPER

  -.

This invention relates to transport vehicles and, per hour, their bumpers. A vehicle bumper is known, containing a central beam made of metal sheet, placed across the entire width of the body and having shelves made in one piece with the front surface having a stepped cross section of the vertical plane, from the back of the bumper to the surface furthest from the body is attached to the bracket in the form of an arch, the top of which is embedded inside the beam, and the ends are attached to the body 1 The disadvantage of this bumper is that if any part of it is damaged, the bumper comes are replaced entirely. The closest to the invention is to the technical essence and the achieved result is the vehicle bumper containing the central beam, having at the ends of the vertical flanges, arched sidewalls attached by the inner ends to the vehicle frame and made in the middle part on the front surface with a ledge mating with a vertical shelf of the corresponding end of the central beam 2. The disadvantage of this bumper is its low / energy consumption and complexity of assembly and disassembly. The purpose of the invention is to increase the energy intensity of the bumper and simplify its assembly and disassembly. To achieve this goal, a vehicle bumper containing a central beam, having vertical flanges at the ends, arched sidewalls, attached with the inner ends to the vehicle frame and made in the middle suit on the front surface with a flange of the corresponding central end beams, provided with elastic ring-shaped couplings, covering the ledges of the sidewalls and the corresponding ends of the central beam in the areas of their conjugation, and on the vertical shelves these ends are made protrusions, and on the inner surfaces of the sleeves - depressions for interaction with said protrusions. At the same time, the central beam and the god of the bumper are made of polymeric materials. In addition, the sidewalls are made in terms of variable thickness, increasing in the rt direction to their inner ends. Figure 1 shows the vehicle bumper in the frontal plane; , in Fig. 2 - view L in Fig: 1; nafig.3 - section bb in figure 1 (on an enlarged scale); in Fig.f. the section in Fig.1 (on an enlarged scale); figure 5 - section GG on figure 1; figure 6 - bumper deformation from a central strike; n Fig.7 - bumper deformation from a side impact; Fig. 8 shows a bumper with a central beam having a more complex section in the middle part; Fig.9 section dD in Fig.8; figure 10 - section EE in Fig.8. The vehicle bumper contains a central beam 1 with vertical shelves 2 at the ends (figure 5). The 8 shelves are mounted on the shelves 3 of the arcuate side walls and lie adjacent to the ledges 5 on their frontal surface 6. Thus, the ends of the central beam 1 overlap the sidewalls k between the ends of the latter. The outer end a of the sidewall is made free, and the inner end b of each of the sidewalls is fixed on the frame 7 of the transport means. The sides, in terms of variable values, increase in thickness towards their inner ends. The bumper is equipped with elastic ring-shaped sleeves 8, which jointly cover the ends of the central beam 1 and the parts of the sidewalls 4 inserted into it. The sleeves 8 have cavities 9 inside, in which protrusions 10 are located, made on the vertical flanges of the two ends of the beam - for transfer from the side walls to the beam and back shear forces. These protrusions are vertical ridges located across the central beam. Couplings 8 adjoin both the frontal surface of the central beam 1 and the frontal surface 6 of the sidewalls, closing their interface. The sleeves 8 are located directly at the edges of the 11 shelves of the bent inner end of the sidewalls, abutting against these edges during deformation of the bumper. The central beam 1 and the sidewall k are made of polymeric materials with different damping properties. For example, the central beam is made of plastic reinforced with unidirectional glass yarns, and the sides are made of thermoplastic reinforced with glass fiber. The bumper is assembled as follows. At the ends of the central beam 1, the sleeves 8 are put on, into the cavities of which the projections 10 of the ends of the central beam are inserted. Then through the holes in the sleeves 8 plant t sidewall, which contributes to the elasticity of the sleeves. After that, the assembled bumper is attached to the frame of the vehicle. In the case of a central impact on the bumper (for example, if the vehicle is unsuccessful maneuvering near the place of its stand and colliding with any obstacle, the central beam 1 bends inwards (Fig. 6), absorbing part of the impact energy, and the sidewalls bend to the opposite sides also absorbing some of this energy. Since the sidewalls are apart from each other, and the ends of the beam come closer together, friction of the central beam and sidewalls occurs under load, which also contributes to the absorption of impact energy. Part of the impact energy is absorbed due to the deformation of the sleeves 8, working at this time for stretching and shearing. Thus, all the elements of the bumper are involved in the perception of the impact. After removing the load from the bumper, its parts return to their original position under the influence of their own elasticity the energy in them when they are moved back is partially dissipated due to the friction between the ends of the beam and the sidewalls between them.When a side impact is in the bumper- (Fig.7), the corresponding sidewall is bent and through the coupling doesn’t follow the central 6kulka that doesn’t follow through dr guyu clutch second sides of put it to flex. In this case, the clutches work on shear and during their deformation they press the central beam to the sidewalls. This contributes to a more efficient absorption of the impact energy, since when the side to which the impact occurred is not behind the beam, the beam slides along the sidewall with absorption of the impact energy due to the friction forces between them. Similarly, 4actb of energy is absorbed when the beam slides along the second sidewall, which is outside the side impact zone. Thus, with a side impact, all the elements of the bumper are working simultaneously. In the middle part, the central beam can be made of a 5-section (Fig. 8), which makes it possible to increase its energy intensity and strength, since in this case a much larger part of it perceives tensile forces. Due to the fact that, in the perception of a blow, all the elements of the bumper take part in the work, it provides high energy consumption with less weight, while it has a simple and technological design, which allows to simplify its assembly and disassembly. invention 1. Vehicle bumper containing a central beam, I have QV 1 and G, vertical shelves at the ends, arched sidewalls, attached by internal ends to the vehicle's frame and made in the middle part on the front surface with a ledge adjacent to the vertical a shelf at the corresponding end of the central beam, characterized in that, in order to increase energy intensity and simplify the assembly and disassembly, it is provided with elastic ring-shaped couplings covering the ledges of the side walls and corresponding The outer ends of the central beam in the areas of their intersection, moreover, ridges were made on the vertical shelves of the said ends, and cavities for interaction with the ridges on the inner surfaces of the couplings. 2. Bumper pop. 1, distinguished by the fact that the central beam and sidewalls are made of polymeric materials. 3. Bumper pop.1, which is also distinguished by the fact that the sidewalls are made in terms of variable thickness, increasing in the direction of their inner ends. Sources of information taken into account in the examination 1. US patent number 019b9, cl. 293-98, 1977. 2. US patent f 2b723bz, cl. 293-73, 195 (prototype). biwa

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Claims (3)

Claim 1. A vehicle bumper comprising a central beam having vertical shelves at its ends, arcuate sidewalls fixed with inner ends to the vehicle frame and made in the middle part on the front surface with a step mating with a vertical shelf of the corresponding end of the central beam, characterized in that, in order to increase energy intensity and simplify assembly and · disassembly, it is equipped with elastic ring-shaped couplings covering the ledges of the sidewalls and the corresponding ends of the central beam in onah their interface, wherein the shelves on the vertical ends of said v.ystupy formed, and on inner surfaces of the sleeves - depression for cooperation with the projections. 2. The bumper according to claim 1, characterized in that the central beam and sidewalls are made of polymer materials. , 3. The bumper according to claim 1, with the fact that the sidewalls are made in terms of a variable thickness, increasing towards their inner ends. Sources of information taken into account during the examination 1. US patent No. 401969, CL. 293-98, 1977. 2. US Patent No. 2672363, cl. 293-73 "1954 (prototype). FIG. If Gg Fie. 5 FIG. 9 Fie.Yu