CN109159820B

CN109159820B - Vehicle frame

Info

Publication number: CN109159820B
Application number: CN201810975459.1A
Authority: CN
Inventors: 王志娟; 黄维; 刘秉翼; 戴秀浪
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: 2020-10-09
Anticipated expiration: 2038-08-24
Also published as: CN109159820A

Abstract

The invention discloses a vehicle frame, comprising: two longitudinal beams are arranged in parallel; the front beam is fixedly arranged at the front ends of the two longitudinal beams; the rear supporting beam is supported between the two longitudinal beams; a first indentation is formed on the inner side wall of one longitudinal beam, and a sunken first indentation is also formed on the outer side wall of the other longitudinal beam; and taking the extending direction of the longitudinal beam as a first direction, wherein the first indentation is of a concave structure, and the extending direction of the first indentation is perpendicular to the first direction. When the frame is impacted, if the impact force cannot be balanced in the energy absorption area, the longitudinal beams can be bent along the first indentations, the first indentations of the two longitudinal beams are arranged on the inner side and the outer side, the same bending direction can be ensured, and the energy of the rotary machine is absorbed through the deformation, so that the safety of personnel in the vehicle is ensured.

Description

Vehicle frame

Technical Field

The present invention relates to vehicle structures, and more particularly 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) 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.

The most likely event during automotive use is a frontal collision. In order to ensure the safety of people in the vehicle, the design of the vehicle body needs to have a certain energy absorption effect to absorb the energy transmitted by the frontal collision, and meanwhile, the vehicle body also needs to have enough rigidity to avoid crushing the front wall and the front windshield during collision so as to cause injury to the people in the vehicle.

The existing front longitudinal beam of the automobile body is divided into an energy absorption area and a rigid area. Wherein the energy absorption area plays a role in crushing and energy absorption; the rigid zone is highly rigid and is used to support the vehicle. However, with the continuous development of the technology, the vehicle speed is faster and faster, and the existing energy absorption area can not meet the energy absorption of the high-speed running vehicle in the collision process. Generally, when the vehicle speed is greater than 64km/h, the size of the energy absorption area cannot meet the collision requirement, when the vehicle runs at high speed, the vehicle speed generally reaches 120km/h, and according to calculation and analysis, passengers are not fortunate in the collision process unless the front overhang size of the vehicle is doubled.

Disclosure of Invention

The invention aims to provide a frame, which can ensure that a rigid area of a longitudinal beam is bent in an oriented mode, so that the supporting strength is ensured, and the injury to passengers caused by rigid collision is avoided.

The frame of the present invention comprises: two longitudinal beams are arranged in parallel; the front beam is fixedly arranged at the front ends of the two longitudinal beams; the rear supporting beam is supported between the two longitudinal beams; a first indentation is formed on the inner side wall of one longitudinal beam, and a sunken first indentation is also formed on the outer side wall of the other longitudinal beam; and taking the extending direction of the longitudinal beam as a first direction, wherein the first indentation is of a concave structure, and the extending direction of the first indentation is perpendicular to the first direction.

The frame as described above, further comprising a subframe fixing plate fixedly disposed on the side member and located between the first indentation and the front beam; and forming a second indentation on the bottom of the longitudinal beam, wherein the second indentation is of a concave structure, and the extending direction of the second indentation is vertical to the first direction.

And a section of sunken section is also formed on the bottom surface of the longitudinal beam, the sunken section is positioned below the auxiliary frame fixing plate, and the second indentation is formed at one end of the sunken section, which is far away from the longitudinal beam.

The vehicle frame as described above, wherein a subframe mounting point is provided on the subframe fixing plate; and taking the linear distance between the auxiliary frame mounting point and the front beam as a first distance, taking the linear distance between the second indentation and the front beam as a second distance, and taking the first distance to be 5-10 mm smaller than the second distance.

The vehicle frame as described above, wherein the rear support beam is formed by combining a first shell and a second shell, and forms a hollow tubular structure.

The vehicle frame as described above, wherein a stabilizing bracket is provided between the front beam and the side beam.

When the frame is impacted, if the impact force cannot be balanced in the energy absorption area, the longitudinal beams can be bent along the first indentations, the first indentations of the two longitudinal beams are arranged on the inner side and the outer side, the same bending direction can be ensured, and the energy of the rotary machine is absorbed through the deformation, so that the safety of personnel in the vehicle is ensured.

In some embodiments, the second indentation can also ensure bending in the vertical direction, and the bending of the first indentation and the second indentation in two directions further improves the energy absorption effect of the deformation.

Drawings

FIG. 1 is a schematic view of a vehicle frame of the present invention;

FIG. 2 is an enlarged view of a portion of the subframe mounting plate of the vehicle frame of the present invention;

FIG. 3 is an enlarged fragmentary view of the rear support beam of the vehicle frame of the present invention.

Reference numerals:

a longitudinal beam 1; a front beam 2; a rear support beam 3; an auxiliary frame fixing plate 4; a stabilizing support 5; a first impression 11; a second indentation 12; a recessed section 13; the first shell 31; a second shell 32; subframe mounting point 41.

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 frame, which comprises longitudinal beams 1, front beams 2 and rear supporting beams 3, wherein the longitudinal beams 1 are provided with two parallel front beams 2 which are fixedly arranged at the front ends of the two longitudinal beams 1; a rear support beam 3 is supported between the two longitudinal beams 1.

On the inner side wall of one longitudinal beam 1, a first indentation 11 is formed, and on the outer side wall of the other longitudinal beam 1, a recessed first indentation 11 is also formed. I.e. the same side of the two stringers 1, where the same side is referred to as the "left side" or the "right side", is formed with the first impression 11. The first impressions 11 are arranged in a vertical direction, where vertical is based on the stringer 1 being horizontal. In general, the extending direction of the longitudinal beam 1 may be a first direction, the first indentation 11 has a concave structure, and the extending direction of the first indentation 11 is perpendicular to the first direction.

Thus, when an impact occurs, the two longitudinal beams 1 are bent in the same direction along the first impressions 11. As can be seen from the direction in which the first indentations 11 are arranged, the bending is a lateral bending.

Further, the auxiliary frame fixing plate 4 is fixedly arranged on the longitudinal beam 1 and positioned between the first indentation 11 and the front beam 2; and forming a second indentation 12 on the bottom of the longitudinal beam 1, wherein the second indentation 12 is of a concave structure, and the extending direction of the second indentation is perpendicular to the first direction.

The second indentation 12 is similar in structure to the first indentation 11, but is located differently, and is arranged on the underside of the longitudinal beam 1, so that in the event of a crash, the longitudinal beam 1 will be arched or bent upwards on the basis of the second indentation 12.

With the first indentation 11, the longitudinal beam can be bent laterally and upwardly at the same time when being collided, and impact force of collision is absorbed through deformation in two directions, so that safety of a passenger is protected.

A section of concave section 13 is further formed on the bottom surface of the longitudinal beam 1, the concave section 13 is located below the auxiliary frame fixing plate 4, and the second indentation 12 is formed at one end, far away from the longitudinal beam 1, of the concave section 13. The recessed section 13 has a recess depth of 2mm to 5mm, preferably 3 mm. Namely, the inner section dimension Z of the longitudinal beam 1 is reduced by 3mm, and the design can ensure that the longitudinal beam is bent stably.

The auxiliary frame mounting point 41 is arranged on the auxiliary frame fixing plate 4; the first distance is 5mm-10mm smaller than the second distance, taking the straight distance of the mounting point 41 from the front beam 2 as the first distance and the straight distance of the second impression 12 from the front beam 2 as the second distance.

That is, the front beam 2 is in the front direction and the other direction is in the rear direction, and the second indentation is 5mm to 10mm behind the subframe mounting point.

Preferably, on both sides of the first indentation 11, a transverse concave structure is further formed, the transverse concave structure is matched with the first indentation 11, a cross-like structure is integrally formed, a certain deformation amount can be provided for the height direction of the stringer 1, the transverse concave structure has a more obvious effect when the second indentation 12 is bent, and the stringer 1 can be prevented from being broken.

Preferably, the rear support beam 3 is formed by combining a first shell 31 and a second shell 32, and forms a hollow tubular structure. Is supported between the two longitudinal beams 1, and a stabilizing bracket 5 is arranged between the front beam 2 and the longitudinal beams 1. It is ensured that the longitudinal beams 1 can be bent at the same time upon impact without getting closer to each other or breaking at other locations, and the rear support beam 3 and the front beam 2 ensure that the longitudinal beams 1 are bent at the designated locations, i.e. where the first indentations 11 and the second indentations 12 are located, without being bent or damaged at other locations, etc.

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:

two longitudinal beams (1) are arranged in parallel;

the front beam (2) is fixedly arranged at the front ends of the two longitudinal beams (1);

the rear supporting beam (3) is supported between the two longitudinal beams (1); wherein the content of the first and second substances,

forming a first indentation (11) on the inner side wall of one longitudinal beam (1), and forming a first sunken indentation (11) on the outer side wall of the other longitudinal beam (1);

the extending direction of the longitudinal beam (1) is taken as a first direction, the first indentation (11) is of a concave structure, and the extending direction of the first indentation (11) is perpendicular to the first direction;

the auxiliary frame fixing plate (4) is fixedly arranged on the longitudinal beam (1) and positioned between the first indentation (11) and the front beam (2);

forming a second indentation (12) on the bottom of the longitudinal beam (1), wherein the second indentation (12) is of a concave structure, and the extending direction of the second indentation is perpendicular to the first direction.

2. The vehicle frame of claim 1,

a section of sunken section (13) is further formed on the bottom surface of the longitudinal beam (1), the sunken section (13) is located below the auxiliary frame fixing plate (4), and the second indentation (12) is formed at one end, far away from the longitudinal beam (1), of the sunken section (13).

3. The vehicle frame of claim 1 or 2,

the auxiliary frame fixing plate (4) is provided with an auxiliary frame mounting point (41);

and taking the linear distance between the auxiliary frame mounting point (41) and the front beam (2) as a first distance, taking the linear distance between the second indentation (12) and the front beam (2) as a second distance, and taking the first distance to be 5-10 mm smaller than the second distance.

4. The vehicle frame of claim 1,

the rear supporting beam (3) is formed by combining a first shell (31) and a second shell (32) and forms a hollow tubular structure.

5. The vehicle frame of claim 1,

and a stabilizing bracket (5) is arranged between the front beam (2) and the longitudinal beam (1).