Front body frontal anti-collision structure and vehicle

Abstract

The utility model discloses a front anti-collision structure for the front vehicle body, including a front longitudinal beam, an integrated die-cast front aluminum body and an A-pillar, the integrated die-cast front aluminum body is connected to the front longitudinal beam and the A-pillar, the integrated die-cast front aluminum body is connected to the front fender lower cross beam and the battery pack front mounting cross beam, the front fender lower cross beam is located between two A-pillars, and the integrated die-cast front aluminum body is located between the front longitudinal beam and the front fender lower cross beam. The front anti-collision structure for the front vehicle body of the utility model has high strength, can effectively ensure the X-direction force transmission path, provide sufficient X-direction support force, and improve safety. The utility model also discloses a vehicle.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to a front body frontal anti-collision structure and a vehicle. Background Art

[0002] In recent years, integrated die-casting technology has gradually become an innovative technology that automobile companies focus on developing. Its technical concept is to simplify the traditional "stamping + welding" into a one-step process, which has the following five advantages:

[0003] 1. Optimize automotive structural parts to reduce weight and make them stronger;

[0004] 2. Reduce automobile production and manufacturing processes and improve production efficiency;

[0005] 3. Collision safety: The highly integrated modular design and one-piece molding process improve the overall structural strength and can effectively disperse the collision energy when a collision occurs;

[0006] 4. Since the composition of cast aluminum materials is relatively simple, it can be recycled and reused;

[0007] 5. It is conducive to achieving vehicle lightweighting and improving the cruising range of new energy vehicles.

[0008] However, due to the late development of integrated die-casting technology, it is difficult to be compatible with C-NCAP, E-NCAP, C-IASI and other evaluation regulations. The existing integrated die-cast front body anti-collision structure is prone to cracking after a collision. Therefore, how to design a reasonable frontal collision force transmission path to prevent cracking of the cast aluminum body and the connection area has become a major technical challenge for OEMs.

[0009] For example, the patent document with publication number CN115320731A discloses an A-pillar cast aluminum joint, a connection structure and an electric vehicle body, which relates to the technical field of electric vehicles, including an A-pillar connection part, whose top is connected to a top side beam connection part, a front door opening stopper part is provided on one side of the A-pillar connection part, and a front wheel cover support beam connection part is provided on the other side, a cavity is formed on the back side of the junction area of ​​the A-pillar connection part, the front door opening stopper part and the front wheel cover support beam connection part, and a cavity reinforcement rib is provided on the front side of the cavity; a flange is formed between the top of the front wheel cover support beam connection part and the top side beam connection part, and the top surface of the flange is the front windshield glue coating surface. The technical solution disclosed in this patent document cannot solve the technical problems described above. Utility Model Content

[0010] 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 front body frontal anti-collision structure, the purpose of which is to improve safety.

[0011] In order to solve the above technical problems, the technical solution adopted by the utility model is: the front vehicle body frontal anti-collision structure includes a front longitudinal beam, an integrated die-cast front aluminum body and an A-pillar, the integrated die-cast front aluminum body is connected to the front longitudinal beam and the A-pillar, the integrated die-cast front aluminum body is connected to the lower cross beam of the front fender and the front mounting cross beam of the battery pack, the lower cross beam of the front fender is located between the two A-pillars, and the integrated die-cast front aluminum body is located between the front longitudinal beam and the lower cross beam of the front fender.

[0012] The front longitudinal beam is provided with an induction groove and an indentation, and the depth of the indentation is ≥5mm.

[0013] The integrated die-cast front aluminum body is connected to the A-pillar, the front fender lower cross beam and the battery pack front mounting cross beam by bolts.

[0014] The two integrated die-cast front aluminum bodies are provided with a front fender cross beam, which is connected to the first support beam and the second support beam, which are connected to the front fender lower cross beam, and the first support beam and the second support beam are located between the front fender cross beam and the front fender lower cross beam.

[0015] The battery pack front mounting crossbeam is located below the front baffle lower crossbeam, the battery pack front mounting crossbeam is connected to the first front mounting bracket and the second front mounting bracket, and the first front mounting bracket and the second front mounting bracket are connected to the front baffle lower crossbeam.

[0016] The first front mounting bracket and the second front mounting bracket are connected to the lower cross beam of the front baffle through bolts.

[0017] The first front mounting bracket and the second front mounting bracket are connected to the integrated die-cast front aluminum body by bolts.

[0018] The utility model also provides a vehicle, comprising the front vehicle body frontal anti-collision structure.

[0019] The front vehicle body frontal anti-collision structure of the utility model has high strength, can effectively ensure the X-direction force transmission path, provide sufficient X-direction supporting force, and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the front vehicle body frontal anti-collision structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the integrated die-casting and A-pillar connection area;

[0022] Figure 3 It is a schematic diagram of the integrated die-casting and the front fender lower crossbeam connection area;

[0023] Figure 4 It is a schematic diagram of the integrated die-casting trinity connection structure;

[0024] Figure 5 It is a schematic diagram of the integrated die-casting body structure;

[0025] Figure 6 This is a schematic diagram of the structure of the front mounting bracket of the battery pack;

[0026] The marks in the above figures are: 1. Front longitudinal beam; 11. Indentation; 12. Induction groove; 2. Integrated die-cast front cast aluminum body; 21. Reinforcement ribs; 22. 3 bolt holes connecting the integrated die-cast front cast aluminum and the A-pillar; 23. 2 bolt holes connecting the integrated die-cast front cast aluminum and the lower cross beam of the front fender; 3. A-pillar; 4. Front fender cross beam; 41. First support beam; 42. Second support beam; 5. Lower cross beam of the front fender; 6. Battery pack front mounting cross beam; 61. First front mounting bracket; 611. Bolt holes connecting the first front mounting bracket, the integrated die-cast front cast aluminum and the lower cross beam of the front fender; 612. Weld between the first front mounting bracket and the front mounting cross beam of the battery pack; 62. Second front mounting bracket; 621. Bolt holes connecting the second front mounting bracket, the integrated die-cast front cast aluminum and the lower cross beam of the front fender; 622. Weld between the second front mounting bracket and the front mounting cross beam of the battery pack. DETAILED DESCRIPTION

[0027] The specific implementation methods of the utility model are further explained in detail below with reference to the accompanying drawings through the description of embodiments, with the aim of helping technicians in the field to have a more complete, accurate and in-depth understanding of the concept and technical solution of the utility model and facilitating its implementation.

[0028] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower" and similar expressions used in this article are for illustrative purposes only.

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

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] like Figures 1 to 6 As shown, the utility model provides a front vehicle body frontal anti-collision structure, including a front longitudinal beam 1, an integrated die-cast front aluminum body 2 and an A-pillar 3, the integrated die-cast front aluminum body 2 is connected to the front longitudinal beam 1 and the A-pillar 3, the integrated die-cast front aluminum body 2 is connected to the front fender lower cross beam 5 and the battery pack front mounting cross beam 6, the front fender lower cross beam 5 is located between the two A-pillars 3, and the integrated die-cast front aluminum body 2 is located between the front longitudinal beam 1 and the front fender lower cross beam 5.

[0032] Specifically, if Figures 1 to 4 As shown, two front longitudinal beams 1 and integrated die-cast front aluminum bodies 2 are provided, the length direction of the front longitudinal beam 1 and the vehicle body is parallel to the X direction, the length direction of the front fender lower cross beam 5 and the battery pack front mounting cross beam 6 is parallel to the Y direction, the Y direction is parallel to the width direction of the vehicle body, and the front fender lower cross beam 5 is located above the battery pack front mounting cross beam 6. One end of the two front longitudinal beams 1 in the length direction is fixedly connected to one end of the two integrated die-cast front aluminum bodies 2, and the other ends of the two integrated die-cast front aluminum bodies 2 are fixedly connected to the two A-pillars 3, respectively, and the front fender lower cross beam 5 and the battery pack front mounting cross beam 6 are fixedly connected to the two integrated die-cast front aluminum bodies 2.

[0033] like Figure 1 and Figure 2 As shown, the front longitudinal beam 1 is provided with an induction groove 12 and an indentation 11, and the depth of the indentation 11 is ≥5mm. A plurality of induction grooves 12 are provided, and the depth of the indentation 11 on the front longitudinal beam 1 is controlled to be above 5mm. The induction groove 12 of the front longitudinal beam 1 needs to cross the longitudinal beam edge characteristic line to ensure that the front end of the front longitudinal beam 1 is crushed, and the middle and rear ends are bent to reduce the extrusion impact on the integrated die-cast front aluminum body 2, thereby protecting the structure of the integrated die-cast front aluminum body 2 and improving the maintenance economy of the vehicle.

[0034] like Figures 1 to 5As shown, a reinforcing rib 21 is provided on the integrated die-cast front aluminum body 2; the integrated die-cast front aluminum body 2 and the A-pillar 3 are connected by bolts; the integrated die-cast front aluminum body 2 and the front fender lower cross beam 5 are connected by bolts. A front fender cross beam 4 is provided between the two integrated die-cast front aluminum bodies 2, the length direction of the front fender cross beam 4 is parallel to the length direction of the front fender lower cross beam 5, the front fender cross beam 4 is fixedly connected to one end of the first support beam 41 and the second support beam 42, the other ends of the first support beam 41 and the second support beam 42 are fixedly connected to the front fender lower cross beam 5, the first support beam 41 and the second support beam 42 are located between the front fender cross beam 4 and the front fender lower cross beam 5, there is a certain distance between the first support beam 41 and the second support beam 42, and the first support beam 41 and the second support beam 42 are located between the two integrated die-cast front aluminum bodies 2.

[0035] The first support beam 41 and the second support beam 42 are welded to the front fender cross beam 4 and the front fender lower cross beam 5 to form an "I"-shaped structure, thereby greatly improving the rear support structure of the integrated die-cast front aluminum body 2, thereby effectively reducing the maximum intrusion amount of the front panel firewall.

[0036] like Figures 1 to 4 and Figure 6 As shown, the front mounting crossbeam 6 of the battery pack is used to install the power battery. The front mounting crossbeam 6 of the battery pack is located below the lower crossbeam 5 of the front fender. The front mounting crossbeam 6 of the battery pack is welded to the first front mounting bracket 61 and the second front mounting bracket 62. The first front mounting bracket 61 and the second front mounting bracket 62 are connected to the lower crossbeam 5 of the front fender. The first front mounting bracket 61 and the second front mounting bracket 62 are connected to the lower crossbeam 5 of the front fender by bolts. The first front mounting bracket 61 and the second front mounting bracket 62 are connected to the integrated die-cast front aluminum body 2 by bolts.

[0037] The integrated die-cast front aluminum body 2 is connected to the A-pillar 3, the lower cross beam of the front fender 5, the first front mounting bracket 61, and the second front mounting bracket 62 by bolts, which can effectively improve the connection strength, thereby preventing the peripheral connection area of ​​the integrated die-cast front aluminum body 2 from cracking after a head-on collision.

[0038] The first front mounting bracket 61 and the second front mounting bracket 62 are welded to the battery pack front mounting cross beam 6, and are connected to the integrated die-cast front aluminum body 2 and the front fender lower cross beam 5 in a three-in-one manner through bolts, which can effectively ensure the X-direction force transmission path and provide sufficient X-direction supporting force to prevent the extrusion impact of the integrated die-cast front aluminum body 2 in a head-on collision, thereby improving the maintenance economy of the vehicle.

[0039] The front anti-collision structure of the front vehicle body of the above structure has the following advantages: the depth of the indentation 11 of the front longitudinal beam 1 is ≥5mm, and the induction groove 12 crosses the characteristic line of the edge of the front longitudinal beam 1, which can ensure that the front end of the front longitudinal beam 1 is crushed and the middle and rear ends are bent, thereby reducing the extrusion impact of the integrated die-cast front cast aluminum body 2; the integrated die-cast front cast aluminum body 2 can effectively improve the connection strength through three bolt connection methods with the A-pillar 3, the front fender lower cross beam 5, the first front mounting bracket 61, and the second front mounting bracket 62; the first support beam 41 and the second support beam 42 are welded to the front fender cross beam 4 and the front fender lower cross beam 5 to form an "I"-shaped structure, wherein the first front mounting bracket 61 and the second front mounting bracket 62 are welded to the battery pack front mounting cross beam 6 through their respective welds, and the respective bolt connection holes are connected to the integrated die-cast front cast aluminum and the front fender lower cross beam 5 in a trinity manner, which can effectively ensure the X-direction force transmission path and provide sufficient X-direction supporting force. In summary, the above structure can ensure that the peak acceleration of the whole vehicle is ≤40g, protect the structure of the integrated die-cast front cast aluminum body 2, prevent cracking in the surrounding area of ​​the integrated die-cast front cast aluminum body 2, improve the maintenance economy of the vehicle, reduce the difficulty of matching the occupant restraint system in the vehicle, and ultimately meet the structural crashworthiness and maintenance economy requirements of C-NCAP, E-NCAP, and C-IASI frontal collisions.

[0040] The utility model also provides a vehicle, including the front body front anti-collision structure of the above structure. The specific structure of the front body front anti-collision structure can be referred to Figures 1 to 6 Since the vehicle of the utility model includes the front vehicle body frontal anti-collision structure in the above embodiment, it has all the advantages of the above front vehicle body frontal anti-collision structure.

[0041] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. The front anti-collision structure of the front vehicle body includes a front longitudinal beam, an integrated die-cast front aluminum body and an A-pillar, wherein the integrated die-cast front aluminum body is connected to the front longitudinal beam and the A-pillar, and is characterized in that: The integrated die-cast front aluminum body is connected to the lower cross beam of the front fender and the front mounting cross beam of the battery pack. The lower cross beam of the front fender is located between the two A-pillars, and the integrated die-cast front aluminum body is located between the front longitudinal beam and the lower cross beam of the front fender.

2. The front vehicle body frontal collision protection structure according to claim 1, characterized in that: The front longitudinal beam is provided with an induction groove and an indentation, and the depth of the indentation is ≥5mm.

3. The front vehicle body frontal collision protection structure according to claim 1, characterized in that: The integrated die-cast front aluminum body is connected to the A-pillar, the front fender lower cross beam and the battery pack front mounting cross beam by bolts.

4. The front vehicle body frontal anti-collision structure according to any one of claims 1 to 3, characterized in that: The two integrated die-cast front aluminum bodies are provided with a front fender cross beam, which is connected to the first support beam and the second support beam, which are connected to the front fender lower cross beam, and the first support beam and the second support beam are located between the front fender cross beam and the front fender lower cross beam.

5. The front vehicle body frontal anti-collision structure according to any one of claims 1 to 3, characterized in that: The battery pack front mounting crossbeam is located below the front baffle lower crossbeam, the battery pack front mounting crossbeam is connected to the first front mounting bracket and the second front mounting bracket, and the first front mounting bracket and the second front mounting bracket are connected to the front baffle lower crossbeam.

6. The front vehicle body frontal collision protection structure according to claim 5, characterized in that: The first front mounting bracket and the second front mounting bracket are connected to the lower cross beam of the front baffle through bolts.

7. The front vehicle body frontal collision protection structure according to claim 5, characterized in that: The first front mounting bracket and the second front mounting bracket are connected to the integrated die-cast front aluminum body by bolts.

8. A vehicle, characterized in that: It comprises the front vehicle body frontal anti-collision structure as described in any one of claims 1 to 7.

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