Engine cabin structure based on head-on collision

Abstract

The engine compartment structure comprises a front wall lower cross beam (1), an engine compartment left longitudinal beam (2) and an engine compartment right longitudinal beam (3), one end of the front wall lower cross beam (1) is fixedly connected with a left side A column (4), and the other end of the front wall lower cross beam (1) is fixedly connected with a right side A column (5). The engine compartment left longitudinal beam (2) and the engine compartment right longitudinal beam (3) are fixedly connected with the front wall lower cross beam (1). The engine compartment has the advantages of high strength and high collision energy transmission efficiency, and the safety performance of the engine compartment is effectively improved.

Description

Technical Field

[0001] The invention relates to a hair compartment structure, in particular to a hair compartment structure based on frontal collision. Background Art

[0002] As the automotive industry develops in the direction of new energy and intelligence, the vehicle curb weight continues to increase. At the same time, it is facing the upgrade of collision regulations and the increasing attention of consumers to vehicle safety. The collision safety performance of automobiles is facing major challenges. The nacelle area absorbs and transmits collision energy, resists deformation of the passenger compartment, and protects the safety of passengers during a frontal collision of the vehicle. It plays an extremely important role in automobile collision safety. Therefore, the structural design optimization of the nacelle area is crucial to the safety performance of the vehicle.

[0003] For pure electric and hybrid models, due to the layout of the power battery and the cabin space requirements, the lower part of the front floor of the vehicle body is often designed as a flat structure. The currently commonly used overlap structure of the engine compartment longitudinal beam and the front enclosure assembly includes the front enclosure lower cross beam and the left / right engine compartment longitudinal beams. The two ends of the front enclosure lower cross beam are overlapped with the inner side of the left / right engine compartment longitudinal beams, and the left / right engine compartment longitudinal beams are then overlapped with the door sills through torque boxes respectively.

[0004] During a collision, the structural strength of the overlap area between the left / right engine compartment longitudinal beams and the lower cross beam of the front panel and the torque box is relatively weak. Energy can hardly be fully transmitted to the door sill, A-pillar and central channel through the front cross beam and the torque box, increasing the risk of intrusion into the passenger compartment. This structure is difficult to meet the collision performance regulatory requirements for vehicles with large curb mass. Summary of the invention

[0005] The purpose of the present invention is to provide a launch bay structure based on frontal collision to solve the technical problems in the prior art. It has the advantages of high strength and high collision energy transfer efficiency, and effectively improves the safety performance of the launch bay.

[0006] The present invention provides a hair compartment structure based on frontal collision, comprising a front enclosure lower cross beam, a hair compartment left longitudinal beam and a hair compartment right longitudinal beam, wherein one end of the front enclosure lower cross beam is fixedly connected to a left A-pillar, the other end of the front enclosure lower cross beam is fixedly connected to a right A-pillar, and the hair compartment left longitudinal beam and the hair compartment right longitudinal beam are both fixedly connected to the front enclosure lower cross beam.

[0007] In the aforementioned head compartment structure based on frontal collision, preferably, the front lower cross beam includes a cross beam section, a first connecting section and a second connecting section, the left end of the cross beam section is fixedly connected to the left A-pillar through the first connecting section, and the right end of the cross beam section is fixedly connected to the right A-pillar through the second connecting section.

[0008] In the aforementioned firing bay structure based on frontal collision, preferably, one end of the left longitudinal beam of the firing bay is fixedly connected to the left end of the cross beam section, and one end of the right longitudinal beam of the firing bay is fixedly connected to the right end of the cross beam section.

[0009] In the aforementioned fire compartment structure based on frontal collision, preferably, the end of the left longitudinal beam of the fire compartment is formed with a first torque box connection portion extending to the rear of the vehicle body, and the end of the right longitudinal beam of the fire compartment is formed with a second torque box connection portion extending to the rear of the vehicle body, a first torque box is fixedly connected to the first torque box connection portion, the upper part of the first torque box is fixedly connected to the bottom of the first connecting section, the left end of the first torque box is fixedly connected to the left A-pillar and the left door sill, a second torque box is fixedly connected to the second torque box connection portion, the upper part of the second torque box is fixedly connected to the bottom of the second connecting section, and the right end of the second torque box is fixedly connected to the right A-pillar and the right door sill.

[0010] In the aforementioned firing bay structure based on frontal collision, preferably, the outer side surface of the left longitudinal beam of the firing bay is connected to the first connecting section via a first angle plate, and the outer side surface of the right longitudinal beam of the firing bay is connected to the second connecting section via a third angle plate.

[0011] In the aforementioned firing compartment structure based on frontal collision, preferably, the inner side surfaces of the firing compartment left longitudinal beam and the firing compartment right longitudinal beam are connected to the cross beam section through a second angle plate.

[0012] Compared with the prior art, the present invention comprises a front enclosure lower cross beam, a left longitudinal beam of a firing compartment and a right longitudinal beam of a firing compartment, one end of the front enclosure lower cross beam is fixedly connected to the left A-pillar, the other end of the front enclosure lower cross beam is fixedly connected to the right A-pillar, and the left longitudinal beam of the firing compartment and the right longitudinal beam of the firing compartment are both fixedly connected to the front enclosure lower cross beam. The two ends of the front enclosure lower cross beam of the present invention are directly fixedly connected to the left A-pillar and the right A-pillar. When a vehicle has a frontal collision, the collision force can be transmitted to the front enclosure lower cross beam through the left longitudinal beam of the firing compartment and the right longitudinal beam of the firing compartment, and then transmitted to the left A-pillar, the right A-pillar and the door sill area through the front enclosure lower cross beam. The structural design has high structural strength and high collision energy transmission efficiency, which effectively solves the problems of insufficient energy transmission and large intrusion into the passenger compartment during a frontal collision. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an axonometric view of the present invention;

[0014] Figure 2 This is an enlarged view of the outer side of the connection between the left longitudinal beam of the launch compartment and the lower cross beam of the front enclosure;

[0015] Figure 3 This is an enlarged view of the inside of the connection between the right longitudinal beam of the launch compartment and the lower cross beam of the front enclosure.

[0016] Explanation of the reference numerals: front panel lower cross beam 1, cross beam section 11, first connecting section 12, second connecting section 13, left longitudinal beam of the launch compartment 2, first torque box connecting portion 21, first torque box 22, right longitudinal beam of the launch compartment 3, second torque box connecting portion 31, left A-pillar 4, right A-pillar 5, left door sill 6, second angle panel 7, first angle panel 8, third angle panel 9. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0018] Embodiments of the present invention: Figure 1-Figure 3 As shown, a cabin structure based on frontal collision includes a front panel lower cross beam 1, a cabin left longitudinal beam 2 and a cabin right longitudinal beam 3. One end of the front panel lower cross beam 1 is fixedly connected to the left A-pillar 4, and the other end of the front panel lower cross beam 1 is fixedly connected to the right A-pillar 5. The cabin left longitudinal beam 2 and the cabin right longitudinal beam 3 are both fixedly connected to the front panel lower cross beam 1.

[0019] Compared with the existing structure, the structure adopted in this embodiment has two ends of the front panel lower cross beam 1 directly connected to the left longitudinal beam 2 and the right longitudinal beam 3 of the launch compartment, which not only simplifies the connection method but also improves the connection strength. When the vehicle collides head-on, the collision force is transmitted to the front panel lower cross beam 1 through the left longitudinal beam 2 and the right longitudinal beam 3 of the launch compartment, and then transmitted to the left A-pillar 4, the right A-pillar 5, the door sill and the central channel through the two ends of the front panel lower cross beam 1, which effectively solves the problems of insufficient energy transfer and large intrusion into the passenger compartment during a head-on collision.

[0020] In a specific embodiment, the front lower cross beam 1 includes a cross beam section 11, a first connecting section 12 and a second connecting section 13. The left end of the cross beam section 11 is fixedly connected to the left A-pillar 4 through the first connecting section 12, and the right end of the cross beam section 11 is fixedly connected to the right A-pillar 5 through the second connecting section 13. Both the first connecting section 12 and the second connecting section 13 have a certain angle with the cross beam section 11.

[0021] The cross beam section 11, the first connecting section 12 and the second connecting section 13 are an integrally formed structure. The first connecting section 12 and the second connecting section 13 are symmetrical structures. By designing a certain angle between the first connecting section 12 and the second connecting section 13 relative to the cross beam section 11, the collision force transmission capacity can be improved.

[0022] Furthermore, one end of the left longitudinal beam 2 of the launching cabin is fixedly connected to the left end of the cross beam section 11 , and one end of the right longitudinal beam 3 of the launching cabin is fixedly connected to the right end of the cross beam section 11 .

[0023] A first torque box connection portion 21 extending toward the rear of the vehicle body is formed at the end of the left longitudinal beam 2 of the launch compartment, and a second torque box connection portion 31 extending toward the rear of the vehicle body is formed at the end of the right longitudinal beam 3 of the launch compartment. A first torque box 22 is fixedly connected to the first torque box connection portion 21, and the upper portion of the first torque box 22 is fixedly connected to the bottom of the first connecting section 12, and the left end of the first torque box 22 is fixedly connected to the left A-pillar 4 and the left door sill 6. A second torque box is fixedly connected to the second torque box connection portion 31, and the upper portion of the second torque box is fixedly connected to the bottom of the second connecting section 13, and the right end of the second torque box is fixedly connected to the right A-pillar 5 and the right door sill.

[0024] Furthermore, the outer side surface of the left longitudinal beam 2 of the launch cabin is connected to the first connecting section 12 through the first angle plate 8, and the outer side surface of the right longitudinal beam 3 of the launch cabin is connected to the second connecting section 13 through the third angle plate 9. The inner side surfaces of the left longitudinal beam 2 of the launch cabin and the right longitudinal beam 3 of the launch cabin are respectively provided with second angle plates 7, which are connected to the cross beam section 11 through the second angle plates 7. By providing the first angle plate 8, the second angle plate 7 and the third angle plate 9, the transmission path of the collision energy can be increased and the transmission efficiency of the collision force can be improved.

[0025] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the present invention is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and drawings, should be within the protection scope of the present invention.

Claims

1. A frontal collision-based launch cabin structure, comprising a front wall lower cross beam (1), a launch cabin left longitudinal beam (2) and a launch cabin right longitudinal beam (3), characterized in that: One end of the front enclosure lower cross beam (1) is fixedly connected to the left A-pillar (4), the other end of the front enclosure lower cross beam (1) is fixedly connected to the right A-pillar (5), and the launch cabin left longitudinal beam (2) and the launch cabin right longitudinal beam (3) are both fixedly connected to the front enclosure lower cross beam (1).

2. The frontal collision-based launch cabin structure according to claim 1, characterized in that: The front lower cross beam (1) comprises a cross beam section (11), a first connecting section (12) and a second connecting section (13); the left end of the cross beam section (11) is fixedly connected to the left A-pillar (4) via the first connecting section (12), and the right end of the cross beam section (11) is fixedly connected to the right A-pillar (5) via the second connecting section (13).

3. The frontal collision-based launch cabin structure according to claim 2, characterized in that: One end of the left longitudinal beam (2) of the launching cabin is fixedly connected to the left end of the cross beam section (11), and one end of the right longitudinal beam (3) of the launching cabin is fixedly connected to the right end of the cross beam section (11).

4. The frontal collision-based launch cabin structure according to claim 3, characterized in that: The end of the left longitudinal beam (2) of the launch compartment is formed with a first torque box connection portion (21) extending toward the rear of the vehicle body, and the end of the right longitudinal beam (3) of the launch compartment is formed with a second torque box connection portion (31) extending toward the rear of the vehicle body, a first torque box (22) is fixedly connected to the first torque box connection portion (21), an upper portion of the first torque box (22) is fixedly connected to the bottom of the first connecting section (12), a left end of the first torque box (22) is fixedly connected to the left A-pillar (4) and the left door sill (6), a second torque box is fixedly connected to the second torque box connection portion (31), an upper portion of the second torque box is fixedly connected to the bottom of the second connecting section (13), and a right end of the second torque box is fixedly connected to the right A-pillar (5) and the right door sill.

5. The frontal collision-based launch cabin structure according to claim 4, characterized in that: The outer side surface of the left longitudinal beam (2) of the launch cabin is connected to the first connecting section (12) via a first angle plate (8), and the outer side surface of the right longitudinal beam (3) of the launch cabin is connected to the second connecting section (13) via a third angle plate (9).

6. The frontal collision-based launch cabin structure according to claim 5, characterized in that: The inner side surfaces of the left longitudinal beam (2) and the right longitudinal beam (3) of the launch cabin are connected to the cross beam section (11) via a second angle plate (7).

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