CN109050670B

CN109050670B - Vehicle frame

Info

Publication number: CN109050670B
Application number: CN201810975444.5A
Authority: CN
Inventors: 王志娟; 黄维; 郑天威
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2018-08-24
Filing date: 2018-08-24
Publication date: 2021-03-09
Anticipated expiration: 2038-08-24
Also published as: CN109050670A

Abstract

The invention discloses a vehicle frame, comprising: the outer frame is in a regular quadrangle and is enclosed by two parallel longitudinal beams and two parallel cross beams; a torsion shaft located at the center of the outer frame; the four curved beams are uniformly distributed on the periphery of the torsion shaft and fixedly connect the torsion shaft with the outer frame, one end of each curved beam is fixedly connected to the outer wall of the torsion shaft, and the other end of each curved beam is fixedly connected to the longitudinal beam or the cross beam. According to the frame, after the longitudinal beam is impacted, the impact force is transmitted along the bent beam, and the moment is generated through the bent structure of the bent beam, so that the whole frame structure is deformed by the moment to absorb the impact energy and ensure the safety of the vehicle.

Description

Vehicle frame

Technical Field

The present invention relates to vehicle frames.

Background

With the development of society, people pay more and more attention to the safety problem of automobiles, and are required to bear strict direct impact and side impact, so that the safety of drivers and passengers is ensured. In the New vehicle collision test NCAP (New Car Association Program, NCAP) evaluation, the rigidity of the passenger compartment has a direct relation with the injury of passengers, the rigidity of the passenger compartment is high, the deformation of the compartment body in the collision is small, the living space of the passengers is ensured, and the injury of the passengers is correspondingly reduced. But the rigidity can not be too strong, and energy absorption can be generated only by sheet metal deformation because certain energy absorption requirements need to be met during collision.

In a side impact collision, the impact energy is absorbed mainly by the door, B-pillar, and body side rail. When the vehicle body shape becomes too large after a collision, the occupant may be injured or even die.

In the prior art, as shown in fig. 1, a longitudinal beam 1 ' generally receives collision force and transmits the force to each transverse beam 2 ' for dispersion, and energy cannot be effectively absorbed through deformation of the transverse beam 2 '. Therefore, it is difficult for the prior art to absorb a large impact energy.

Disclosure of Invention

The invention aims to provide a frame, which can improve the force transmission efficiency of a longitudinal beam and a transverse beam and convert collision force into moment transmission, thereby realizing deformation energy absorption of the longitudinal beam and the transverse beam.

The frame of the present invention comprises: the outer frame is in a regular quadrangle and is enclosed by two parallel longitudinal beams and two parallel cross beams; a torsion shaft located at the center of the outer frame; the four curved beams are uniformly distributed on the periphery of the torsion shaft and fixedly connect the torsion shaft with the outer frame, one end of each curved beam is fixedly connected to the outer wall of the torsion shaft, and the other end of each curved beam is fixedly connected to the longitudinal beam or the cross beam.

The frame as described above, wherein a reinforcing plate is provided on the outer wall of the side member, and one end of the curved beam is fixedly connected to the reinforcing plate.

The vehicle frame as described above, wherein the torsion beam has a recessed portion in the center thereof, and a support member is provided in the recessed portion.

The vehicle frame as described above, wherein a groove is formed on a bottom surface of the recessed portion, and the support member is disposed in the groove.

The vehicle frame as described above, wherein the support member is provided in plurality in a stacked manner.

The vehicle frame as described above, wherein the support member is cross-shaped, and four end portions of the support member respectively abut against the inner wall of the recessed portion.

The vehicle frame as described above, wherein a cover plate is further provided on the recessed portion.

The frame as described above, wherein the anti-bending bracket is disposed on any two of the four inner corners of the outer frame.

According to the frame, after the longitudinal beam is impacted, the impact force is transmitted along the bent beam, and the moment is generated through the bent structure of the bent beam, so that the whole frame structure is deformed by the moment to absorb the impact energy and ensure the safety of the vehicle.

Drawings

FIG. 1 is a schematic view of a prior art vehicle frame;

FIG. 2 is a schematic view of the vehicle frame of the present invention;

FIG. 3 is a schematic view of a torsion axle of the vehicle frame of the present invention;

FIG. 4 is a schematic view of a torsion axle and cover plate of the vehicle frame of the present invention;

figure 5 is a force diagram of the vehicle frame of the present invention.

Reference numerals:

a longitudinal beam 1; a cross beam 2; a torsion shaft 3; a curved beam 4; a support 5; a cover plate 6; a bending-resistant bracket 7; a reinforcing plate 11.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

The invention discloses a vehicle frame, which comprises an outer frame, a torsion shaft 3 and a bent beam 4, and is shown in figure 2. The outer frame is a regular quadrangle and is enclosed by two parallel longitudinal beams 1 and two parallel cross beams 2.

And the torsion shaft 3 is positioned in the center of the outer frame and is fixed with the outer frame through a bent beam 4. And the four bent beams 4 are arc-shaped and uniformly distributed on the periphery of the torsion shaft 3, the torsion shaft 3 is fixedly connected with the outer frame, one end of each bent beam 4 is fixedly connected to the outer wall of the torsion shaft 3, and the other end of each bent beam 4 is fixedly connected to the longitudinal beam 1 or the transverse beam 2.

The torsion shaft 3 is provided with four mounting surfaces on the outer wall for fixing the camber beam 4. As can be understood from the structure of the outer frame, two of the curved beams 4 have one end fixed to the longitudinal beam 1 and the other two curved beams 4 have one end fixed to the cross beam 2, and of course, the other ends of the four curved beams 4 are fixed to the mounting surface of the torsion shaft 3.

And a reinforcing plate 11 is arranged on the outer wall of the longitudinal beam 1, and one end of the bent beam 4 is fixedly connected with the reinforcing plate 11. Of course, the reinforcing plate 11 can also be provided on the cross member 2.

Referring to fig. 3, the torsion beam 3 has a recess in the center thereof, and a support 5 is provided in the recess. A groove is formed on the bottom surface of the recess, and the support 5 is disposed in the groove. The support 5 is provided in plurality in a stacked manner. For example, as shown in fig. 3, the support 5 has two supports, which can be arranged in the groove at the same time, or one support can be arranged in the groove and one support can be directly superimposed on the other support, without limiting whether they are arranged in the groove or not. Also, a plurality of supporting members 5 may be provided in a staggered arrangement, so that the balance of the supporting points is ensured. As in a preferred embodiment, the support 5 has a cross-shape with four ends respectively abutting against the inner walls of the recess. When a plurality of supports 5 is used, for example two supports 5, then eight different support points are possible. It is noted that the staggered arrangement of the plurality of supports 5 is a preferred embodiment, and they may not be staggered.

Referring to fig. 4, a cover plate 6 may also be provided on the recess. On the one hand, the support piece 5 can be sealed in the concave part, on the other hand, the cover plate 6 can be clamped in the concave part and plays a certain supporting role, so that the support effect can be played, and particularly, the support in the concave part of the torsion shaft 3 can be ensured to be stable and uniform in stress due to the fact that the cover plate is arranged at the top.

And bending-resistant brackets 7 are arranged on any two opposite inner corners of the four inner corners of the outer frame. Therefore, when the outer frame is impacted and deformed, the outer frame can be twisted to deform and is not easy to scatter.

When a side impact occurs, as shown by arrow a on the right side in fig. 5, the impact force is transmitted to the bending beam 4 through the longitudinal beam 1, the bending beam 4 converts the received force into moment, and the movement tendency in the direction of arrow B in fig. 5 is generated. At this time, the impact force is transmitted in the form of moment to each of the cross members 2 and the side members 1 in the outer frame through the bending beams 4. The connecting position of the camber beam 4 and the longitudinal beam 1, the connecting position of the camber beam 4 and the transverse beam 2, the connecting position of the transverse beam 2 and the longitudinal beam 1, the camber beam 4, the longitudinal beam 1 and the transverse beam 2 are deformed, so that the impact energy is absorbed. The side impact force originally born by the longitudinal beam 1 is transmitted in the form of moment through the bent beam 4, so that the whole frame absorbs energy through torsional deformation.

Of course, according to the actual structure of the vehicle, the outer frame of the frame may be rectangular, or may be formed by combining a plurality of groups of square frames, so as to improve the applicability.

The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, which are only preferred embodiments of the present invention, but the present invention is not limited by the drawings, and all equivalent embodiments modified or changed according to the idea of the present invention should fall within the protection scope of the present invention without departing from the spirit of the present invention covered by the description and the drawings.

Claims

1. A vehicle frame, comprising:

the outer frame is a regular quadrangle and is enclosed by two parallel longitudinal beams (1) and two parallel cross beams (2);

a torsion shaft (3) located at the center of the outer frame;

the camber beam (4) is arc-shaped and is provided with four camber beams, the camber beams are uniformly distributed on the periphery of the torsion shaft (3) and are fixedly connected with the outer frame, one end of each camber beam (4) is fixedly connected to the outer wall of the torsion shaft (3), the other ends of the camber beams are respectively and fixedly connected to the two longitudinal beams (1), and the other ends of the camber beams are respectively and fixedly connected to the two transverse beams (2).

2. The vehicle frame of claim 1,

and a reinforcing plate (11) is arranged on the outer wall of the longitudinal beam (1), and one end of the bent beam (4) is fixedly connected with the reinforcing plate (11).

3. The vehicle frame of claim 1,

the torsion shaft (3) has a recess in the center thereof, and a support member (5) is provided in the recess.

4. The vehicle frame of claim 3,

a groove is formed on the bottom surface of the recessed portion, and the support member (5) is disposed in the groove.

5. The vehicle frame of claim 3,

the supporting pieces (5) are arranged in a plurality in an overlapped mode.

6. The vehicle frame of any of claims 3-5,

the supporting piece (5) is in a cross shape, and four end parts of the supporting piece respectively abut against the inner wall of the concave part.

7. The vehicle frame of any of claims 3-5,

and a cover plate (6) is also arranged on the concave part.

8. The vehicle frame of claim 1,

and bending-resistant brackets (7) are arranged on any two opposite inner corners of the four inner corners of the outer frame.