WO2022191735A1

WO2022191735A1 - Vehicle

Info

Publication number: WO2022191735A1
Application number: PCT/RU2021/000515
Authority: WO
Inventors: Сергей Иванович МАЛУХИН
Original assignee: Сергей Иванович МАЛУХИН
Priority date: 2021-03-11
Filing date: 2021-11-18
Publication date: 2022-09-15

Abstract

The utility model relates to automotive construction, namely to the design of car bodies with a load-bearing passenger compartment frame in the form of a three-dimensional structure made of hollow load-bearing elements (1), (2), (3) welded together, and is designed to increase the safety of the driver and passengers in the event of a road accident. A steel bar (4) with a grooved surface is installed inside each of the elements (1), (2), (3). Centering elements (5) ensure that the bar (4) is positioned approximately in the center of the load-bearing element. The bars (4) are welded together at contact points (8). Free space in the elements (1), (2), (3) is filled with a filler (6) made of construction plastic, preheated to a fluid state. The inside surface of the elements (1), (2), (3) is coated with liquid rubber to eliminate gaps between them and the filler (6). The load-bearing frame of the passenger compartment of the means of transport is a rigid and high-strength load-bearing cage that is protected from collapse and rupture in the event of an accident. The passive safety of the vehicle is improved.

Description

VEHICLE

The utility model relates to the automotive industry, namely to the arrangement of bodies with a load-bearing interior frame in the form of a three-dimensional structure of hollow power elements welded together, and is designed to improve the safety of the driver and passengers in the event of a traffic accident.

The vehicle is a source of increased danger. In the conditions of increasing traffic density of traffic flows, the power and speed of vehicles, the probability of an emergency increases.

To reduce the severity of traffic accidents, the vehicle must comply with the requirements of the passive safety system, an important element of which is the body.

In the event of a vehicle accident, a safe body structure must keep the space of the passenger compartment within the limits that ensure the survival of passengers and the driver. To do this, the power frame of the vehicle interior must have maximum rigidity and strength.

Especially the problem of body safety concerns passenger vehicles of the middle and lower price segments. The power frame of the body of most passenger vehicles is a welded non-separable rigid spatial structure formed by box-section parts made of sheet steel. Improving the safety of the body is possible through the use of high-strength steels, but this significantly increases the price of the vehicle.

PREVIOUS LEVEL OF TECHNIQUE Known protective frame of the cabin of the vehicle (author's certificate for the invention Ne 1093597SU, IPC B60R21/13, B62D33/06, publ. 23.05.1984), containing front and rear pillars connected to the upper longitudinal and transverse beams. Beams and racks are made of thin-walled straight pipe sections. Between adjacent segments there are inserts rigidly connected to them. Each insert is cranked with a central solid wall, in the zone of which pipe sections are connected, and with at least two ray-shaped protrusions located in the holes of the pipe sections to be connected. The initial guide section of each protrusion is associated with the inner surface of the pipe section, and the end section is located relative to the latter with a gap gradually increasing towards the end of the protrusion.

The disadvantage of this technical solution is the insufficient strength and rigidity of the cabin frame due to the location of the frame-reinforcing inserts only at the junctions of the power elements.

Known car body (patent for the invention JSfe 2096231RU, IPC B62D 29/04, B60R 21/00, publ. 20.1 1.1997), made in the form of a survivability capsule with a memory of the original shape. The body contains a tubular load-bearing frame in the form of a supporting spatial structure and a lining reinforced with titanium bonds connected to the frame, made of a durable elastic material, which is a series of layers alternately glued to each other, some of which consist of styrene-butadiene rubber, and others of the product of copolymerization of polycarbonate with polyethylene. The panoramic windows of the car, including the windshield, are armored.

The disadvantage of the technical solution according to the patent N "2096231RU is the complexity and high cost of its implementation, which makes difficult to use it in the mass production of vehicles.

A vehicle was adopted as a prototype (patent for invention N ° 2106996RU, IPC B62D 23/00, publ. elements at least partially filled with elements in the form of continuous vibration-damping bars made of metal porous gas-permeable mesh fibrous material. The beams are installed without clearance in the tunnels of the load-bearing elements, their geometric shape corresponds to the trajectory of the internal space of the tunnel in which this beam is mounted.

The disadvantages of the prototype are:

- insufficient increase in the passive safety of the vehicle, tk. the proposed bars made of porous metal material installed in the tunnels of load-bearing elements do not have rigidity and strength sufficient to protect the body from deformation during a traffic accident;

- high labor intensity of the process of mounting the power frame of the vehicle body, caused by the need to additionally spend time and resources first on the manufacture of bars, and then on installing them into power elements before welding the latter. At the same time, it should be noted that, as a rule, the load-bearing elements of the vehicle frame have various complex sections, and the requirements for the manufacturing technology of the beams are high due to the need to comply with the condition of the exact correspondence of the geometric shape of the beams to the trajectory of the tunnels of the load-bearing elements in which they are installed, as well as exact correspondence to the dimensions of the tunnel sections, because the bars in them must be installed without clearance. The objective of the proposed utility model is to improve the safety of the driver and passengers of the vehicle in the event of a traffic accident.

The technical result consists in increasing the passive safety of the vehicle by increasing the rigidity and strength of the power frame of the vehicle interior.

DISCLOSURE OF THE INVENTION

The specified technical result is achieved by the fact that in a vehicle containing a body including a load-bearing frame of the cabin, to which the doors are attached, while the load-bearing frame of the cabin is made in the form of a three-dimensional structure of hollow strength elements welded together filled with filler, and in each of the doors a hollow window sill power element was mounted, according to the utility model, the inner surface of the hollow power elements of the cabin frame is covered with liquid rubber, in addition, a steel bar with a corrugated surface is installed inside each of them, on which centering elements with holes are placed, and the bars at the points of contact with each other are connected by welding; in addition, structural plastic preheated to a fluid state is used as a filler.

In a particular case of the utility model, the inner surface of the hollow window sill power element of the door is covered with liquid rubber, and inside it there is a steel bar with a corrugated surface, on which centering elements with holes are placed, in addition, structural plastic preheated to a fluid state is used as a filler.

High molecular weight polyethylene, or fiberglass, or polyacital was used as a structural plastic.

The proposed technical solution is illustrated by the following figures. BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 - conditional image of the vehicle.

The design of the load-bearing frame of the cabin of various brands of vehicles, as well as within their model ranges, may differ in the number of hollow load-bearing elements that form the cabin frame.

Figure 2 is a conditional image in section of the power element of the power frame of the vehicle interior. The sectional shape of the power element can be different. The centering element is shown in a particular case of execution, namely, with grooves.

The power frame of the vehicle interior (Fig. 1) contains hollow power elements 1 (spars), 2 (crossbars) and 3 (racks) welded together, which form a single rigid one-piece spatial structure.

Power elements 1, 2 and 3 are made of sheet steel and are closed, mainly by means of spot welding, hollow box-section profiles (Fig. 2), on the surface of which there are through technological holes (not shown).

Inside each of the power elements 1, 2, 3 there is a steel bar 4 with a corrugated surface. The position of the rod 4 approximately in the center of the power element is provided by centering elements 5 placed on it, the number of which depends on the length of the power element.

The centering element 5 is made with holes for the free flow of the molten filler. The location and shape of the holes can be different and is determined only by technological preferences.

All steel bars 4 at the points of contact 8 with each other are connected by welding. Thus, the power frame of the vehicle interior receives a high-strength cage.

The free space in the power elements is filled with filler 6. It is important for the filler that it be strong and resistant to shock loads, non-brittle at low temperatures, non-flammable, moisture resistant, odorless during vehicle operation and had slight shrinkage.

Structural plastic, preheated to a fluid state, was used as a filler. For example, high molecular weight polyethylene, or fiberglass, or polyacital.

Currently, the term "engineering plastic" (otherwise called engineering plastic) is well-established and widely known. Engineering plastics have better mechanical, thermal and technological characteristics than other types of materials, their range is significant and continues to grow.

The corrugated surface of the steel bar 4 increases its area and improves adhesion to the filler 6, which gives the power elements 1, 2, 3 additional strength.

During hardening, the filler 6 decreases in volume. This can lead to a gap between it and the power elements 1, 2, 3, which will adversely affect the strength of the latter and may lead to an increase in noise when the vehicle is moving. To eliminate this effect, before installing the steel bar 4 and filling with filler 6, the inner surface of the load-bearing elements is covered with liquid rubber (not shown).

Liquid rubber has a high ability to adhere to any material and reliably binds the filler with load-bearing elements into a monolithic, durable structure.

Thus, the load-bearing frame of the vehicle interior is a rigid and high-strength load-bearing cage. In the event of an accident, the filler will protect the load-bearing elements and, in general, the load-bearing frame of the passenger compartment from crushing, and the steel bar from tearing. Even under very high impact loads, the interior of the vehicle will retain the space necessary for the survival of the driver and passengers. For the purpose of additional protection of the driver and passengers in case of an accident, the power window sill element 7, installed in each door of the vehicle body, is also a monolithic structure, described above for power elements 1, 2, 3, namely, its inner surface is covered with liquid rubber, a steel bar 4 with a corrugated surface is installed inside, on which centering elements 5 with holes are placed, and structural plastic preheated to a fluid state is used as a filler 6.

The proposed design can be implemented both in the production of a vehicle and in car services.

During the production of the vehicle, the following operations are performed.

First, the inner surfaces of the power elements 1, 2, 3 are covered with liquid rubber by cold spraying through technological holes located on the surface of the power elements.

After it hardens, a steel bar 4 is installed in the power element through the technological hole with centering elements 5 placed on it, giving the bar a preliminary shape of the power element. Then, at the points of contact of 8 steel bars with each other, they are welded.

Next, technological holes are sealed that are not used to fill the power elements with a filler, after which the latter are filled with a filler preheated to a fluid state. The liquid filler quickly fills the free space of the load-bearing elements, freely passing through the holes and/or grooves of the centering elements. After the filler has hardened, the structure is ready for further assembly of the vehicle. In car services, the interior is first disassembled, i.e. remove all elements to provide access to the load-bearing frame of the cabin. Then access is made inside the power elements 1, 2, 3, for example, by making holes on the power element. Next, perform the necessary operations in the above sequence.

The proposed technical solution for the design of the load-bearing cage of the passenger compartment is also applicable for strengthening the cabin of a cargo vehicle and the passenger compartment of a bus.

The monolithic rigid and durable load-bearing frame of the vehicle interior increases its passive safety. In any collision - frontal, side, rear impact, the displacement of the vehicle's structural elements into the passenger compartment will be absent or minimized. This will not only reduce the severity of bodily injury, but also help save human lives.

The proposed technical solution meets the criterion of the utility model "novelty", because no solutions of the same purpose with the proposed set of features have been identified from the prior art.

Claims

UTILITY MODEL FORMULA

1. A vehicle containing a car body, including a power frame of the passenger compartment, to which doors are attached, while the power frame of the cabin is made in the form of a three-dimensional structure of hollow power elements welded together, filled with filler, and a hollow window sill power element is mounted in each of the doors , characterized in that the inner surface of the hollow load-bearing elements of the cabin frame is covered with liquid rubber, in addition, inside each of them a steel bar with a corrugated surface is installed, on which centering elements with holes and / or grooves are placed, and the bars at the points of contact with each other are connected by welding; in addition, structural plastic preheated to a fluid state is used as a filler.

2. The vehicle according to claim 1, characterized in that the inner surface of the hollow window-sill power element of the door is covered with liquid rubber, and inside it is installed a steel bar with a corrugated surface, on which centering elements with holes and / or grooves are placed, in addition, in Structural plastic preheated to a fluid state was used as a filler.

3. The vehicle according to claims 1 and 2, characterized in that high molecular weight polyethylene, or fiberglass, or polyacytal is used as a structural plastic.

SUBSTITUTE SHEET (RULE 26)