SI9700243A - Multilevel safety car bomper-protector - Google Patents

Abstract

Subject of the invention is a multilevel safety bumper - protector whose construction, installation and application provide progressive deformation and thus enhanced safety against damage when the vehicle crashes into an obstacle (other vehicle, wall, tree,...) with the front or rear part of the vehicle. The multilevel safety car bumper - protector according to the invention features inside the rectangular metal profiles (A, A1), which are attached to the car assembly, flexible sliding guides (B, B1) having its longitudinal displacement limited by one or several safety guards (C).

Description

The subject of the invention is a multi-stage car bumper - bumper whose structural installation and construction allow for a gradual

2o deformation and thus greater safety against damage when it comes to colliding a vehicle against an obstacle (second car, wall, tree, ...) with the front or rear of the vehicle. The subject matter of the invention is in Class B 60 R 19/00 of the International Patent Classification.

A technical problem that is successfully solved by the present invention is the construction and implementation of fastening the front and / or rear bumper elastically or. in such a way that the deformation of the bumper - bumper and its mounting points would absorb most of the force released by the impact in such a way that the vehicle cab would be less damaged or damaged. remained intact.

In the known embodiments, the front and rear bumpers are rigidly attached to the body or to the body. vehicle chassis. In the event of a collision, the whole structure moves inwards and, in severe collisions, the passenger compartment also deforms, causing injury to the driver and passengers.

There are also embodiments of the bumper mounting where the bumper beams are elastically coupled to the rest of the vehicle structure. Such embodiments are described, for example, in patent documents EP 511 427 and EP 501 150. The purpose of such elastically mounted bumpers is to absorb energy in a collision and thus to prevent damage to the bumpers in minor collisions, since the bumper is subjected to elastic collision mounting and thus depreciates the force of the race. The construction allows for only minor shock absorption and does not significantly contribute to solving the technical problem of the present invention.

Automobile multi-stage safety bumper - The bumper according to the invention has sliding guides in rectangular metal profiles that are attached to the vehicle structure, whose longitudinal movement is limited by one or more safety fuses.

The invention will be explained in more detail on the basis of an embodiment and figures, of which:

Fig. 1 is an axonometric view of the structural assembly of a car multi-stage safety bumper in the disassembled position;

Figure 2 is a schematic view of the front of the car in the floor plan showing the positioning of the guides and the position of the bumper;

Figure 3 is a schematic side view of the car and showing the installation of the guides and front and rear bumper;

Fig. 4 is an axonometric view of deformation of a car multi-stage safety bumper in an asymmetric collision;

Figure 5 is an axonometric view of deformation of a car multi-stage frontal bumper;

Figure 6 is a schematic illustration of the deformation of the cars involved in a frontal collision;

Fig. 7 is a schematic illustration of the deformation of vehicles equipped with a multi-stage safety bumper according to the invention in a frontal collision.

Figure 1 shows an axonometric view of a multi-stage car bumper - bumper in the disassembled position. It consists of profiles A, A1, which are mounted on the front of the vehicle and can be welded to the inner fenders or. the body of the car and the guide B, B1 of the bumper - bumper slider bracket, which end up as K, K1 sliding blades. Further, the components of the safety bumper according to the invention are safety fuses C, screws D with a nut that serve to attach guides B, B1 to profiles A, A1, bolts F with fuses that serve to attach the metal part G of the bumper to guides B, B1, protective reflector rubber H and decorative plastic cover J of the bumper.

In the event of a collision of the vehicle with the front or rear of the vehicle, a multi-stage car bumper - bumper according to the invention is shown along the obstacle as described below.

In the event of a frontal collision with the whole front or rear of the vehicle, as shown in Figure 5, the vehicle bumper moves to the inside of the vehicle with respect to the collision force, varying deeply, with both blades K on guides B, B1 clipping a certain number of fuses. C, which can be of different thicknesses.

The number of clipped - broken fuses C depends on the force of the impact, or the force acting on them, or. it is related to their thickness and also depends on the material from which they are made.

When all fuses C are cut off, both rectangular metal profiles A, A1, which also represent the extreme fuse points of the sliding bumper - bumper, serve as the last fuse. The profiles are welded to the vehicle as shown in figures 2 and 3 for length c in front of the engine. Even when the bumper is completely moved to the inside of the car, due to this arrangement of rectangular profiles A, A1, the occupants are protected in the event of a violent collision with the possible movement of the engine and other parts into the cab of the vehicle, which often causes the driver and passengers in the vehicle to be trapped. It also protects the motor itself from damage.

In the case of a frontal collision with the front, rear right or left side of the vehicle, as shown in Figures 4 and 7, asymmetrically moving guides B, B1 intersect a certain number of fuses C, depending on the force acting on the right or left half multi-stage bumper. If the impact is so violent that all fuses C are cut off and the bumper reaches the extreme point a (in Figure 4), the action is as shown in Figure 7.

The use of a multi-stage car bumper according to the invention results in left and right vehicle bumps in a violent collision of vehicles, as shown by the arrow movement in Figure 7. In this case, therefore, this is not a collision of vehicles with one another, as has happened so far and is shown in Figure 6. In the example shown in Figure 7, the chances of injury to the driver and passengers are much smaller than they were before.

Minor impact results in a simple deflection of the vehicle from the obstruction, which is made possible by rubber H, which is attached to the metal part G of the bumper. In the case of a slightly stronger impact, when only one is cut off

2o fuse C The bumper moves inside the vehicle only so long as the vehicle is still protected, as shown in Figures 2 and 3. The distances b, b1 between the first and second fuses are equal to the distances between the bumper and the front and rear extremities of the body vehicles a, a1.

The automotive multi-stage safety bumper - the bumper of the invention therefore depreciates the impact or the force acting on it by means of a multi-stage interrupter C, in such a way that the driver and occupants of the vehicle are much more protected and the possibility of injury is much less than ever.

The advantage of the aforementioned system is that after the bumper collision at the obstacle and when the metal fuses C are cut off, the sliding bumper supports B, B1 can be pulled to their original position, as shown in Figure 2, and replace the cut useless safety fuses C with new ones.

The initial impact of the bumper - the bumper on collision of the vehicle is significantly lower after the intercept of the metal fuses C than at the very beginning when the bumper - the bumper was in the normal extracted position as shown in Figure 2. In short, the safety guards C amortize - mitigate the initial impact force or the impact force.

The gradual deformation of the car's multi-stage safety bumper - bumper according to the invention thus solves the technical problem satisfactorily, and the design of the bumper allows greater safety against damage, in the event of a collision of the vehicle with an obstacle (second car, wall, tree, ...) with the front or the rear of the vehicle.

Claims (3)

1. Car multi-stage safety bumper - bumper 5, characterized in that sliding guides (B, B1) are movably mounted in rectangular metal profiles (A, A1) attached to the vehicle structure, the longitudinal movement of which is limited by one or more safety locks (C). io 2. Car multi-stage safety bumper - bumper, according to claim 1, characterized in that the guides (B, B1) are fixed at one end to the metal part (G) of the bumper and to the other end terminated as sliding blades (K, K1). Car multi-stage safety bumper - bumper according to claims 1 and 2, characterized in that the safety fuses (C) are made of different materials and different thicknesses of 20.