RU2266834C2 - Vehicle energy absorbing door - Google Patents

Abstract

FIELD: transport engineering.

SUBSTANCE: invention relates to means of protection of passengers at side impact. Proposed energy absorbing door of vehicle has energy absorbing insert 6 between inner panel 2 of door and upholstery 3 of door, with base 7 made integral with flanges at end face parts for fastening insert to inner panel, horizontal and vertical ribs of variable height and thickness made in form of plates. Short stiffening ribs 12 are placed between ribs extending to door upholstery and forming cells to provide uniform distribution of load at side impact. Lower horizontal ribs 13 are provided with thickening to smoothly push passengers from zone of impact (zone E). To provide earlier operation of construction, L-shaped member is used secured by one side to energy absorbing insert 6 and other side, to safety bar 4.

EFFECT: simplified design, provision of smooth displacement of passenger owing to deformation of insert, improved safety.

3 cl, 4 dwg

Description

The invention relates to the field of transport engineering, namely, to protect passengers of a vehicle in the event of a side impact.

The closest technical solution to the claimed design includes the energy-absorbing structure of the car door (prototype - US patent No. 6203096, class B 60 R 21/02, publication date 03/20/2001), which includes an energy-absorbing insert located between the inner panel of the door and the trim doors made with a protruding part directed to the glass guide and which has ribs in the inner space. The insert has a base, curved ribs, horizontal and vertical ribs directed to the door trim to which the insert is glued. The structure has a safety bar located between the outer panel and the glass guide, which is directly used for shock absorption. During the impact, the horizontal and vertical ribs deform and absorb energy after the longitudinal bending of the curved ribs.

The disadvantage of this technical solution is the design complexity of the energy-absorbing insert, for the protruding part of which it is necessary to cut a service hole on the inner panel of the door, also in the process of side impact, a glass guide is directly used for depreciation, and the presence of the protruding part made of a different material than the energy-absorbing insert, leads to higher construction costs.

The objective of the invention is to simplify the design and to achieve smooth displacement of the passenger due to deformation of the insert, ensuring the safety of the passenger, as well as to create an energy-absorbing insert that would constructively fit into the existing door structure, which is especially important for mass production.

To solve this problem, the design of an energy-absorbing door of the vehicle is proposed, which has an energy-absorbing insert located between the inner door panel and the door trim and having a base made integrally with flanges along the end parts for fastening the insert to the inner panel, horizontal and vertical ribs of variable height and thickness made in the form of plates. Between the ribs, which reach the door trim and form the cells, short stiffeners are located to ensure uniform load distribution during side impact.

The lower horizontal ribs are thickened, and during a side impact smoothly push the passenger out of the impact zone. To ensure earlier operation of the structure, an L-shaped element is proposed, attached to one side of the energy-absorbing insert, and the other to the safety beam.

Comparison of the claimed technical solution with the prior art in scientific, technical and patent documentation as of the priority date in the main and related sections shows that the set of essential features of the claimed solution was not known - therefore, it meets the patentability condition of “novelty”.

The analysis of known technical solutions in the art showed that the proposed device has features that are not available in the known technical solutions, and using them in the claimed combination of features makes it possible to obtain a new technical effect, therefore, the proposed technical solution has an inventive step compared to the existing level technicians.

The proposed technical solution is industrially applicable, because can be manufactured industrially, efficiently, reproducibly, therefore, meets the patentability condition “industrial applicability”.

The essence of the technical solution is illustrated by drawings.

Figure 1 - General view of the side door without upholstery from the passenger compartment;

Figure 2 - section aa along the energy-absorbing insert with door trim;

Figure 3 is a front view of an energy-absorbing insert;

Figure 4 - section bB with an additional element.

The energy-absorbing door of the vehicle is a structure designed in accordance with the requirements of the UNECE Regulation R95 and designed to protect passengers and the driver in the event of a side impact.

The claimed design consists of an outer (1) and inner (2) panels and trim (3) of the door. Between the outer (1) and inner (2) panels in the horizontal plane (along the car) there is a safety beam (4), and the vertical plane - the glass guide (5), and between the inner (2) panel and the door trim (3) is energy absorbing insert (6) (figure 2).

The energy-absorbing insert (6) is a trapezoidal part consisting of a base (7) made integrally with flanges (8) along the end parts (Fig. 3), with which the insert (6) is attached to the inner panel (2) by a bolted connection (9), and of horizontal (10) and vertical (11) ribs made in the form of plates directed towards the door trim (3) (Figs. 1, 2, 3). The ribs (10, 11) are located around the perimeter and center of the insert (6) and reach the door trim (3) (Fig. 1, 2), and between them in the formed cells there are short horizontal and vertical ribs (12), also made in in the form of plates, and stiffening the base (7) of the insert (6) and providing a uniform load distribution during side impact. The lower horizontal ribs (13) are thicker relative to other ribs and during lateral impact, the ribs (13) push the soft part of the seat, pushing the passenger out of the impact zone (zone E) before deformation in zones C and D reaches it and due to gradual deformation The insert provides a smooth shift of the passenger. Energy absorption occurs not in the process of bending the ribs, as in the prototype, but during plastic deformation with the subsequent destruction of thinner horizontal and vertical ribs (10, 11), since the main purpose of the energy-absorbing insert (6) is not so much energy absorption as removing a passenger from the zone deformation of rigid body parts (doors, pillars) earlier than the specified deformation will come to this point.

If it is necessary to push the passenger out of the impact zone at an earlier date, it is proposed to introduce into the design an L-shaped element (14) (Fig. 4) located between the outer (1) and inner (2) door panels, one side of which is bolted connection (15) with the insert (6) through the inner panel (2), and the other with the safety beam (4).

In the process of side impact, the door elements are deformed (1, 2, 4, 5), which leads to the displacement of the insert (6), which pushes the door trim (3), as well as the seat in zone E and the passenger in zone D. During movement plastic deformation of the ribs occurs (10, 11), which ensures a smooth increase in effort on the thigh of a passenger in zone D. At the moment when the plastic deformation of body parts and elements (1, 2, 4, 5) of the car door ends, the passenger is removed from the zone contact with rigid body parts.

Claims (3)

1. Energy-absorbing door of the vehicle, containing an energy-absorbing insert located between the inner door panel and the door trim and having a base with horizontal and vertical ribs directed towards the passenger compartment, a safety beam and a glass guide located between the inner and outer door panels, characterized in that the horizontal and vertical ribs of the energy-absorbing insert are made in the form of plates of variable height and thickness, where between the ribs adjacent to the door trim is located short stiffening ribs are provided, and the lower horizontal ribs are made with thickening and with the possibility of pushing part of the seat out of the impact zone, the base of the insert having end flanges by which the insert is attached to the inner panel of the door. 2. The energy-absorbing door of the vehicle according to claim 1, characterized in that the energy-absorbing insert is made of polypropylene. 3. The energy-absorbing door of the vehicle according to claim 1, characterized in that between the outer and inner panels of the door there is a L-shaped element that is attached on one side to the energy-absorbing insert and the other side to the safety beam.

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