Vehicle body longitudinal beam and vehicle

Abstract

The utility model discloses a car body longitudinal beam which comprises a longitudinal beam outer plate assembly and a longitudinal beam inner plate assembly, the longitudinal beam outer plate assembly comprises a front end outer plate and a rear end outer plate which are connected, the longitudinal beam inner plate assembly comprises a front end inner plate and a rear end inner plate which are connected, and the front end outer plate and the front end inner plate are oppositely arranged and fixedly connected. The second front end outer plate and the second front end inner plate are oppositely arranged and fixedly connected, an inverted trapezoidal first groove is formed in the front end outer plate, and a second groove is formed in the rear end outer plate. According to the vehicle body longitudinal beam, the overall structural strength is enhanced, energy absorption is increased, crushing is increased, and the safety performance is improved; and the mold manufacturing method is simpler and more convenient, the manufacturing cost is reduced, and the economic benefit is high. The utility model further discloses a vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and specifically relates to a vehicle body longitudinal beam and a vehicle. Background Art

[0002] In recent years, with the advancement of science and technology, the automotive industry has flourished. Constant updates to manufacturing techniques and regulations have placed higher demands on vehicle structure and safety. When developing vehicles, R&D personnel primarily consider the strength of the vehicle's structure and how it can best protect passengers and mitigate injuries during driving.

[0003] During a collision, a car relies primarily on longitudinal beams to crush and absorb energy in the initial stage. If the front longitudinal beams and other structures are not strong enough, the vehicle will not be fully crushed, which will increase the damage to the occupants, affecting the safety of the driver and passengers. The existing technology has the following defects:

[0004] The longitudinal beams of the vehicle body are relatively weak, resulting in insufficient energy absorption and failure to ensure the safety of the occupants.

[0005] Chinese patent application number 201710004347.7 discloses a longitudinal beam structure for an automobile body, comprising a front longitudinal beam extending along the direction of the automobile body and a front crossbeam connected between the front longitudinal beams. The front longitudinal beam comprises a front longitudinal beam section and a rear longitudinal beam section. The front longitudinal beam section comprises a front half and a rear half. The front half and the rear half are welded together into one piece by laser welding. One end of the rear longitudinal beam section is connected to the front crossbeam, and the other end is provided with a bending area and connected to the front longitudinal beam section. The extension direction of the bending area is perpendicular to the length extension direction of the front longitudinal beam.

[0006] It is desirable to provide an improved vehicle body longitudinal beam, particularly with regard to how to improve the structural strength of the longitudinal beam. Utility Model Content

[0007] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a vehicle body longitudinal beam, the purpose of which is to improve the structural strength.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a vehicle body longitudinal beam, including a longitudinal beam outer panel assembly and a longitudinal beam inner panel assembly, the longitudinal beam outer panel assembly includes a front end outer panel and a rear end outer panel connected to each other, the longitudinal beam inner panel assembly includes a front end inner panel and a rear end inner panel connected to each other, the front end outer panel and the front end inner panel are arranged relative to each other and are fixedly connected, the second front end outer panel and the second front end inner panel are arranged relative to each other and are fixedly connected, a first inverted trapezoidal groove is provided on the front end outer panel, and a second groove is provided on the rear end outer panel.

[0009] The front end outer panel and the rear end outer panel are connected by laser welding, and a first weld is formed at the connection between the front end outer panel and the rear end outer panel. The front end inner panel and the rear end inner panel are connected by laser welding, and a second weld is formed at the connection between the front end inner panel and the rear end inner panel. The first weld and the second weld are staggered.

[0010] The distance between the first weld and the second weld is set to 55-65 mm.

[0011] The front end outer plate and the front end inner plate are connected via welding points.

[0012] The rear end outer plate and the rear end inner plate are connected via welding points.

[0013] The utility model also provides a vehicle, comprising the vehicle body longitudinal beam.

[0014] The vehicle body longitudinal beam of the utility model has the following beneficial effects:

[0015] 1. Strengthen the strength of the entire longitudinal beam, increase energy absorption, reduce crushing, and improve safety performance;

[0016] 2. Good stability, simpler mold manufacturing method, reduced manufacturing costs and high economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This manual includes the following drawings, which show the following contents:

[0018] Figure 1 It is a structural diagram of the vehicle body longitudinal beam of the utility model;

[0019] Figure 2 It is a top view of the front outer panel;

[0020] Figure 3 It is a front view of the front outer panel;

[0021] Figure 4 This is the left side view of the rear end outer plate;

[0022] Figure 5 This is a front view of the rear end outer plate;

[0023] Figure 6 This is a front view of the front inner panel;

[0024] Figure 7 This is the left side view of the front inner panel;

[0025] Figure 8 This is the front view of the rear end inner panel;

[0026] Figure 9 This is a top view of the rear end inner panel;

[0027] The markings in the figure are: 1. front outer panel; 2. rear outer panel; 3. front inner panel; 4. rear inner panel. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and to facilitate its implementation.

[0029] It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are merely for the convenience of description.

[0030] like Figures 1 to 9 As shown, the utility model provides a vehicle body longitudinal beam, including a longitudinal beam outer panel assembly and a longitudinal beam inner panel assembly, the longitudinal beam outer panel assembly includes a front end outer panel and a rear end outer panel connected to each other, the longitudinal beam inner panel assembly includes a front end inner panel and a rear end inner panel connected to each other, the front end outer panel and the front end inner panel are arranged relative to each other and are fixedly connected, the second front end outer panel and the second front end inner panel are arranged relative to each other and are fixedly connected, a first inverted trapezoidal groove is provided on the front end outer panel, and a second groove is provided on the rear end outer panel.

[0031] Specifically, the present invention aims to address the problem of insufficient longitudinal beam strength in existing vehicles by providing a high-strength longitudinal beam structure. This high-strength longitudinal beam structure replaces the existing groove structure, designing a weak front and strong rear structure. The arc-shaped grooves absorb energy, allowing the longitudinal beam to absorb more energy. This structure can improve the strength of the vehicle body longitudinal beam and enhance the safety of vehicle occupants. It also features low manufacturing costs, excellent stability, and high strength.

[0032] Preferably, the front outer panel and the rear outer panel are arranged sequentially along the X direction (i.e., the vehicle body length direction), the rear end of the front outer panel and the front end of the rear outer panel are connected by laser welding, and a first weld is formed at the connection between the front outer panel and the rear outer panel. The front inner panel and the rear inner panel are arranged sequentially along the X direction, the rear end of the front inner panel and the front end of the rear inner panel are connected by laser welding, and a second weld is formed at the connection between the front inner panel and the rear inner panel, and the first weld and the second weld are staggered. The front outer panel and the front inner panel are arranged sequentially along the Y direction (i.e., the vehicle body width direction), and the rear outer panel and the rear inner panel are arranged sequentially along the Y direction. The projections of the first weld and the second weld on a projection plane parallel to the X direction and perpendicular to the Y direction are spaced a certain distance apart, forming a staggered arrangement.

[0033] Preferably, the distance between the first weld and the second weld is set to 55-65 mm. For example, the distance between the first weld and the second weld can be set to 56 mm, 58 mm, 60 mm, 62 mm or 64 mm.

[0034] Preferably, the front outer plate and the front inner plate are connected by welding points to form a box-shaped structure with open ends and a hollow interior. The rear outer plate and the rear inner plate are connected by welding points.

[0035] The front outer panel is designed with an inverted trapezoidal groove, 450mm long at the top, 410mm long at the bottom, 33mm deep, and 90mm high. The rear outer panel groove is 220mm long, 184mm high, and 27mm deep. This inverted trapezoidal groove absorbs energy, allowing the longitudinal beam to absorb more energy, bending and crushing in the designed bending direction to absorb external energy.

[0036] The utility model also provides a vehicle, including the vehicle body longitudinal beam of the above structure. Figures 1 to 9 Since the vehicle of the present invention includes the vehicle body longitudinal beam in the above embodiment, it has all the advantages of the above vehicle body longitudinal beam.

[0037] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A vehicle body longitudinal beam, characterized in that: It includes a longitudinal beam outer plate assembly and a longitudinal beam inner plate assembly, the longitudinal beam outer plate assembly includes a front end outer plate and a rear end outer plate connected to each other, the longitudinal beam inner plate assembly includes a front end inner plate and a rear end inner plate connected to each other, the front end outer plate and the front end inner plate are arranged relative to each other and are fixedly connected, the second front end outer plate and the second front end inner plate are arranged relative to each other and are fixedly connected, a first inverted trapezoidal groove is provided on the front end outer plate, and a second groove is provided on the rear end outer plate.

2. The vehicle body longitudinal beam according to claim 1, characterized in that: The front end outer panel and the rear end outer panel are connected by laser welding, and a first weld is formed at the connection between the front end outer panel and the rear end outer panel. The front end inner panel and the rear end inner panel are connected by laser welding, and a second weld is formed at the connection between the front end inner panel and the rear end inner panel. The first weld and the second weld are staggered.

3. The vehicle body longitudinal beam according to claim 2, characterized in that: The distance between the first weld and the second weld is set to 55-65 mm.

4. The vehicle body longitudinal beam according to any one of claims 1 to 3, characterized in that: The front end outer plate and the front end inner plate are connected via welding points.

5. The vehicle body longitudinal beam according to any one of claims 1 to 3, characterized in that: The rear end outer plate and the rear end inner plate are connected via welding points.

6. A vehicle, characterized in that: The vehicle body longitudinal beam comprises any one of claims 1 to 5.

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