VEHICLE AND FRONT LONGITUDINAL BEAM REAR SECTION MEMBER THEREOF

Abstract

The disclosure relates to the technical field of vehicle body structures, and in particular provides a vehicle and a front longitudinal beam rear section member of the vehicle. The front longitudinal beam rear section member comprises a base part, and a first part and a second part which are located on two sides of the base part in a width direction of the vehicle, the vehicle is provided with a traction battery, and the traction battery is at least connected to the base part; the vehicle comprises a cross beam located behind the front longitudinal beam rear section member in a length direction of the vehicle, and the base part is connected to the cross beam; and the vehicle comprises two rocker panels separately arranged in the width direction of the vehicle, and each of the first part and the second part is connected to the rocker panel on a corresponding side, wherein at least some of the base part, the first part and the second part are of an integrally-formed structure. With such a configuration, difficulties in the manufacture of different parts themselves and in matching between parts are reduced, and the product consistency of front longitudinal beam rear section members is improved.

Claims

1. A front longitudinal beam rear section member of a vehicle, comprising a base part, and a first part and a second part which are located on two sides of the base part in a width direction of the vehicle, the vehicle being provided with a traction battery, and the traction battery being at least connected to the base part; the vehicle comprising a cross beam located behind the front longitudinal beam rear section member in a length direction of the vehicle, and the base part being connected to the cross beam; and the vehicle comprising rocker panels separately arranged in the width direction of the vehicle, and each of the first part and the second part being connected to the rocker panel on a corresponding side, wherein at least some of the base part, the first part and the second part are of an integrally-formed structure.

2. The front longitudinal beam rear section member of a vehicle according to claim 1, wherein the base part, the first part and the second part are all castings.

3. The front longitudinal beam rear section member of a vehicle according to claim 2, wherein the casting is made of C611 aluminum alloy free from heat treatment.

4. The front longitudinal beam rear section member of a vehicle according to claim 1, wherein the base part, the first part and the second part are integrally formed.

5. The front longitudinal beam rear section member of a vehicle according to claim 1, wherein the front longitudinal beam rear section member is provided with a rib assembly on a side thereof close to the cross beam.

6. The front longitudinal beam rear section member of a vehicle according to claim 5, wherein the rib assembly comprises first ribs extending generally in the width direction of the vehicle.

7. The front longitudinal beam rear section member of a vehicle according to claim 6, wherein the rib assembly comprises second ribs forming an included angle with the first ribs, and viewed in a height direction of the vehicle, the second ribs that correspond to the same width direction are continuously or discontinuously arranged; and/or viewed in the height direction of the vehicle, an included angle is formed between at least some of the plurality of second ribs that correspond to the same width direction.

8. The front longitudinal beam rear section member of a vehicle according to claim 1, wherein the base part is connected to the cross beam by means of a plurality of connecting parts arranged in the length direction of the vehicle.

9. The front longitudinal beam rear section member of a vehicle according to claim 8, wherein the plurality of connecting parts have different dimensions in the width direction of the vehicle.

10. A vehicle, comprising a front longitudinal beam rear section member of a vehicle according to claim 1.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0037] A front longitudinal beam rear section member of a vehicle according to the disclosure is described below with reference to the accompanying drawings. In the accompanying drawings:

[0038] FIG. 1 shows a first schematic structural diagram of a vehicle according to an embodiment of the disclosure, which is a top view and mainly shows a vehicle body front engine compartment framework comprising a front longitudinal beam rear section member;

[0039] FIG. 2 shows a second schematic structural diagram of a vehicle according to an embodiment of the disclosure;

[0040] FIG. 3 shows a first schematic structural diagram of a front longitudinal beam rear section member of a vehicle according to an embodiment of the disclosure, which is a perspective schematic rear side view;

[0041] FIG. 4 shows a second schematic structural diagram of a front longitudinal beam rear section member of a vehicle according to an embodiment of the disclosure, which is a perspective schematic front side view;

[0042] FIG. 5 shows a third schematic structural diagram of a front longitudinal beam rear section member of a vehicle according to an embodiment of the disclosure, which is a schematic bottom view of the longitudinal beam rear section member;

[0043] FIG. 6 shows a schematic diagram of a connection relationship between a front longitudinal beam rear section member and a cross beam in a vehicle according to an embodiment of the disclosure;

[0044] FIG. 7 shows a schematic diagram of a connection relationship between a front longitudinal beam rear section member and a rocker panel and a foot plate in a vehicle according to an embodiment of the disclosure;

[0045] FIG. 8 shows a schematic diagram of a connection relationship between a front longitudinal beam rear section member and a rocker panel in a vehicle according to an embodiment of the disclosure;

[0046] FIG. 9 shows a schematic diagram of a relationship between a front longitudinal beam rear section member and a lower inner A-pillar plate and a rocker panel in a vehicle according to an embodiment of the disclosure;

[0047] FIG. 10 shows a schematic diagram of a connection relationship between a front longitudinal beam rear section member and a front longitudinal beam in a vehicle according to an embodiment of the disclosure; and

[0048] FIG. 11 shows a schematic diagram of a force transmission path of a vehicle body front engine compartment framework in a vehicle according to an embodiment of the disclosure in the case of a collision.

LIST OF REFERENCE SIGNS

[0049] 100. Vehicle; [0050] 1((a), (b)). Front longitudinal beam; [0051] 2. Front longitudinal beam rear section member; 20. Base part; 21. First part; 22. Second part; 231. First rib; 232. Second rib; [0052] 3. Cross beam; [0053] 41. First connecting component; 410. Recess; 411. First protrusion; 412. Second protrusion; 42. Second connecting component; 43. Third connecting component; [0054] 5. Bracket; 51. First protruding end; 511. Connector a; 52. Second protruding end; 521. Connector b; 53. Connector c; [0055] 6. Foot plate; 61. Connector d; 62. Connector e; 63. Connector f; [0056] 7((a), (b)). Lower inner A-pillar plate; 71. Connector g; [0057] 8((a), (b)). Rocker panel; 81. Connector h; 82. Connector i; [0058] 9. Supporting member; 91. First vertical part; 911. Connector j; 92. Second vertical part; 921. Connector k; 93. Third vertical part; 931. Connector l; 94. Reinforcing rib.

DETAILED DESCRIPTION

[0059] Preferred implementations of the disclosure are described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementations are only used to explain the technical principles of the disclosure, and are not intended to limit the scope of protection of the disclosure.

[0060] It should be noted that in the description of the disclosure, the terms, such as “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner” and “outer”, that indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as limitation to the disclosure. In addition, the terms “first”, “second”, and “third” are for descriptive purposes only, and may not be interpreted as indicating or implying relative importance. The terms “a/an” and “this” in the singular form may also include the plural form.

[0061] In addition, for better description of the disclosure, many details are provided in the following specific implementations, and those skilled in the art should understand that, without some specific details, the disclosure can still be implemented. In some examples, casting processing methods, etc. that are well known to those skilled in the art are not described in detail in order to highlight the gist of the disclosure.

[0062] Referring to FIGS. 1 to 11, FIG. 1 shows a first schematic structural diagram of a vehicle according to an embodiment of the disclosure; FIG. 2 shows a second schematic structural diagram of a vehicle according to an embodiment of the disclosure; FIG. 3 shows a first schematic structural diagram of a front longitudinal beam rear section member of a vehicle according to an embodiment of the disclosure, which is a perspective schematic rear side view; FIG. 4 shows a second schematic structural diagram of a front longitudinal beam rear section member of a vehicle according to an embodiment of the disclosure, which is a perspective schematic front side view; FIG. 5 shows a third schematic structural diagram of a front longitudinal beam rear section member of a vehicle according to an embodiment of the disclosure, which is a schematic bottom view of the longitudinal beam rear section member; FIG. 6 shows a schematic diagram of a connection relationship between a front longitudinal beam rear section member and a cross beam in a vehicle according to an embodiment of the disclosure; FIG. 7 shows a schematic diagram of a relationship between a front longitudinal beam rear section member and a rocker panel and a foot plate in a vehicle according to an embodiment of the disclosure; FIG. 8 shows a schematic diagram of a connection relationship between a front longitudinal beam rear section member and a rocker panel in a vehicle according to an embodiment of the disclosure; FIG. 9 shows a schematic diagram of a connection relationship between a front longitudinal beam rear section member and a lower inner A-pillar plate and a rocker panel in a vehicle according to an embodiment of the disclosure; FIG. 10 shows a schematic diagram of a connection relationship between a front longitudinal beam rear section member and a front longitudinal beam in a vehicle according to an embodiment of the disclosure; and FIG. 11 shows a schematic diagram of a force transmission path of a vehicle body front engine compartment framework in a vehicle according to an embodiment of the disclosure in the case of a collision.

[0063] Referring mainly to FIGS. 1 to 5, in a possible implementation, a vehicle body front engine compartment framework of a vehicle 100 mainly comprises a front anti-collision beam (not marked), two front longitudinal beams separately arranged in a left-right manner (respectively denoted as 1(a) and 1(b)), a front longitudinal beam rear section member 2, a cross beam 3, two lower inner A-pillar plates (respectively denoted as 7(a) and 7(b)) corresponding to the two front longitudinal beams, and rocker panels (respectively denoted as 8(a) and 8(b)), wherein the front longitudinal beam rear section member and the cross beam are arranged between the two front longitudinal beams, and the cross beam is located behind the front longitudinal beam rear section member. In this example, each of the front anti-collision beam, the front longitudinal beams and the rocker panels is an aluminum extruded part. The front longitudinal beam rear section member 2 comprises a central base part 20, and a first part 21 and a second part 22 which are located on two sides of the base part. In particular, in the disclosure, the base part, the first part and the second part are an integrally-formed casting, and the casting is made of C611 aluminum alloy free from heat treatment. In this way, a 6000-series material used for the two front longitudinal beams can effectively absorb energy, and the front longitudinal beam rear section member 2 as a large integrally-formed casting thus has good lateral stiffness and force transmission effect. On this basis, it is expected to sufficiently firmly transmit the energy generated during a vehicle collision.

[0064] For the front longitudinal beam rear section member 2, since difficulties in the manufacture of different parts and in matching between parts are reduced, the product consistency is improved. Moreover, since at least some parts involve an integrated forming process, connection processes such as bolts and gluing introduced for connections between components in a non-integrated forming process are omitted, and therefore, the production efficiency is improved while the device investment is reduced.

[0065] In a possible implementation, rib assemblies are arranged on two sides of the front longitudinal beam rear section member, wherein the rib assembly comprise first ribs 231 extending generally in a width direction of the vehicle (the first ribs extending generally horizontally) and second ribs 232 forming an included angle with the first ribs. For example, each of the first rib and the second rib may comprise a plurality of sections. Especially for the second ribs in the rib assembly, viewed in a height direction of the vehicle, the second ribs of different sections that correspond to the same width direction may be continuously or discontinuously arranged and/or an included angle is formed between at least some of the plurality of second ribs that correspond to the same width direction.

[0066] It should be noted that the formation of the included angle herein should be interpreted as that the plurality of second ribs have an obvious direction change in an extension trend. For example, it may be the following case: a straight line in one direction changes to a straight line in another direction; a straight line changes to a curve; a curve of a trend changes to a curve in another direction; and so on.

[0067] The provision of the first ribs 231 can increase lateral stiffness of the front longitudinal beam rear section member 2, thereby effectively preventing the casting from fracturing during a vehicle collision. Moreover, such a rib orientation can ensure that energy can be effectively transmitted to the rocker panels on the two sides in the case of a vehicle collision. The provision of the second ribs 232 increases the ability of the front longitudinal beam rear section member 2 to resist torsional deformation in a Z direction when the front longitudinal beam rear section member is impacted due to the vehicle collision.

[0068] On this premise, those skilled in the art can combine the integrally-formed front longitudinal beam rear section member of C611 aluminum alloy free from heat treatment with the rib position design including the first ribs and the second ribs, so that the vehicle body front engine compartment framework can meet the expected structural strength and a collision safety goal.

[0069] Since the vehicle is further provided with a traction battery (not shown) as its power source, the traction battery is arranged on a base unit at a position close to a lower part, the base part is connected to the cross beam by means of a connecting unit located above the base unit. Since the traction battery is arranged below a vehicle bottom plate, the height of a connecting component in the Z direction of the vehicle is limited, and the overall cross-sectional strength of the connecting component is weakened. In view of this, in the disclosure, reliably support for force transmission is implemented by means of a plurality of separately arranged connecting components.

[0070] Referring mainly to FIGS. 1, 2 and 6, in a possible implementation, three connecting components are provided, and are denoted as a first connecting component 41, a second connecting component 42 and a third connecting component 43, wherein the base part of the front longitudinal beam rear section member 2 is connected to the cross beam 3 by means of the connecting components (41, 42, 43).

[0071] As an example, the second connecting component 42 and the third connecting component 43 are respectively located on two sides of the first connecting component 41, the widths of the connecting components (42, 43) are slightly less than the width of the first connecting component 41, and the structures of the three connecting components are generally the same. Specifically, each of the connecting components (41, 42, 43) is generally of a sled board structure. Taking the first connecting component 41 as an example, the sled board comprises a central recess 410, and a first protrusion 411 and a second protrusion 412 which extend outward from the recess. In addition, the three connecting components may be made of the same material or different materials. For example, in this example, the first connecting component 41 in the middle is an aluminum stamped part, and the connecting components (42, 43) on the two sides are made of DP800 high-strength steel.

[0072] In a possible implementation, on one hand, the first part/second part of the front longitudinal beam rear section member 2 is connected to the rocker panel on a corresponding side in the width direction of the vehicle, and on the other hand, the first part/second part of the front longitudinal beam rear section member 2 is connected to the rocker panel on a corresponding side in a length direction of the vehicle. Hereinafter, description will be made mainly with reference to FIGS. 7 to 9.

[0073] As an example, the vehicle is provided with a bracket 5 for connection. For example, the bracket is an aluminum extruded part. The bracket has two protruding ends. According to a direction shown in FIG. 8, a first protruding end 51 is a protruding end that protrudes along a left side and that is of a sheet structure, and a second protruding end 52 is a protruding end located on a right side of the first protruding end and extending in the length direction of the vehicle. As an example, the second protruding end is generally of a structure in the shape of Chinese character “”, and the first protruding end is of a bent structure protruding from a left side edge of the structure in the shape of Chinese character “”. By means of a connector a 511, the first protruding end 51 is connected to a front side wall of the first part of the front longitudinal beam rear section member 2 in the length direction of the vehicle; and by means of a connector b 521, the second protruding end 52 is connected to the rocker panel 8(a) in the width direction of the vehicle. In addition, the first part is also directly connected to the rocker panel 8(a) in the width direction of the vehicle by means of a connector c 53.

[0074] In this example, a foot plate 6 of the vehicle is connected to the first part of the front longitudinal beam rear section member 2 in the height direction of the vehicle by means of two connectors d 61, the foot plate 6 is also connected to the rocker panel 8(a) in the height direction of the vehicle by means of a connector e 62, and the rocker panel 8(a) is connected to the first part of the front longitudinal beam rear section member 2 in the width direction of the vehicle by means of a connector f 63.

[0075] In addition, the first part/second part of the front longitudinal beam rear section member 2 is connected to the lower inner A-pillar plate on a corresponding side by means of a connector g 71, and the first part/second part of the front longitudinal beam rear section member 2 is also directly connected to the rocker panel on a corresponding side by means of a connector h 81 and a connector i 82. In addition, in this example, the lower inner A-pillar plate is made of high-strength steel DP600.

[0076] Referring mainly to FIG. 10, in a possible implementation, the vehicle body front engine compartment framework is further provided with a supporting member 9 for connection function, and the supporting member mainly implements the connection between the front longitudinal beam and the first part/second part of the front longitudinal beam rear section member 2 on a corresponding side. In this example, the supporting member 9 covers a part of an outer wall surface of the front longitudinal beam 1(b) close to the inner side, and is attached to the second part of the front longitudinal beam rear section member 2 in the width direction and the length direction of the vehicle, respectively. As an example, the supporting member 9 forms, between the front longitudinal beam 1(b) and the second part of the front longitudinal beam rear section member, a generally L-shaped bend serving as a supporting body of the supporting member. The bend comprises a first vertical part 91 corresponding to the front longitudinal beam 1(b) and a second vertical part 92 corresponding to the second part of the front longitudinal beam rear section member 2, wherein the first vertical part 91 is connected to the front longitudinal beam 1(b) by means of a connector j 911, and a third vertical part 93 extends from an upper part of the first vertical part 91. The second vertical part 92 is connected to the second part of the front longitudinal beam rear section member 2 in the length direction of the vehicle by means of a connector k 921, and the third vertical part 93 is connected to the second part of the front longitudinal beam rear section member 2 in the width direction of the vehicle by means of a connector l 931. In this example, a plurality of plate-shaped reinforcing ribs 94 for improving the strength of the bend are added at a bent part of the bend.

[0077] Based on the above structure, for a force transmission path in the case of a vehicle collision, reference may be made to FIG. 11. As shown in FIG. 11, since the front longitudinal beam rear section member 2 is of a structure with no inconsistent interference in material, structure and rib position, after energy generated during a vehicle collision is transmitted to the front longitudinal beam rear section member 2 by means of the front longitudinal beams on the two sides, in the first aspect, the energy is directly transmitted to the rocker panel on a corresponding side by means of the first part/second part on the outer side; in the second aspect, the energy is transmitted to the lower inner A-pillar plate on a corresponding side by means of the first part/second part on the outer side and then dispersed to an upper bracket of the vehicle body front engine compartment framework; and in the third aspect, the energy is transmitted to the central base part by means of the first part/second part on the outer side, further transmitted to the cross beam by means of the three sled boards (that is, the connecting components (41, 42, 43)), and then transmitted from the cross beam to the rocker panels on the two sides.

[0078] It can be seen that, when the front longitudinal beam rear section member is subjected to a direct impact, the energy in areas on two sides is transmitted mainly by means of the rocker panel on a corresponding side, and the energy in a central area is transmitted to the cross beam by means of the three sled boards, so that requirements for small overlap crash at 56 km/h FFB, 64 km/h ODB, 25% 64 km/h, etc. can be met. According to the disclosure, based on the structural design of the new front longitudinal beam rear section member, a force transmission path after a vehicle collision is re-planned, so that the structure is more stable, and the energy transmission efficiency after the collision is higher. Experiments prove that, especially in a 25% small overlap crash test, the vehicle body front engine compartment framework provided with the front longitudinal beam rear section member according to the disclosure can obviously resist the impact of a wheel hub.

[0079] Heretofore, the technical solutions of the disclosure have been described with reference to the preferred implementations shown in the accompanying drawings. However, those skilled in the art can readily understand that the scope of protection of the disclosure is apparently not limited to these specific implementations. Those skilled in the art may make equivalent changes or substitutions to the related technical features without departing from the principle of the disclosure, and all the technical solutions with such changes or substitutions shall fall within the scope of protection of the disclosure.