CN212332771U

CN212332771U - Front auxiliary frame of electric vehicle

Info

Publication number: CN212332771U
Application number: CN202020471505.7U
Authority: CN
Inventors: 袁德文; 高旻; 刘紫平; 陈双喜
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2021-01-12
Anticipated expiration: 2030-04-02

Abstract

The utility model discloses an electric vehicle front auxiliary frame, which comprises a front side cross beam, a rear side cross beam and a left longitudinal beam and a right longitudinal beam which are connected with the front side cross beam and the rear side cross beam, wherein the front side cross beam, the rear side cross beam and the left longitudinal beam and the right longitudinal beam form an inverted trapezoidal frame; the longitudinal beam is F-shaped and is provided with two transverse extending ends, and the two transverse extending ends are respectively connected with the front side cross beam and the rear side cross beam. The utility model discloses be trapezoidal frame structure of falling with preceding sub vehicle frame setting, and trapezoidal main aspects installs at whole car front portion, and the tip is installed at whole car rear portion. When the whole vehicle is subjected to 25% offset collision, the front auxiliary frame can be overlapped with the collision barrier, the collision capacity can be well transmitted to the front auxiliary frame, and the energy concentration in the collision process on the vehicle body is reduced.

Description

Front auxiliary frame of electric vehicle

Technical Field

The utility model relates to the technical field of automobiles, concretely relates to sub vehicle frame before electric motor car.

Background

With the strong support of national policies and the more mature market, the requirements of collision safety regulations are more and more strict, and the safety, comfort, endurance mileage, cost performance and the like become the requirements of customers for purchasing electric vehicles. Therefore, it is a necessary trend to develop an electric vehicle that is comfortable and safe while being cost-effective.

With the stricter requirements of national safety regulations, the change of offset collision from original 40% collision to 25% collision means that the front auxiliary frame is required to play more roles in the 25% offset collision process and absorb more energy to ensure the collision safety.

The patent (publication number: CN105109555A) provides a full extrusion-molded aluminum alloy auxiliary frame, which has high yield, low cost and easy control of welding. However, the aluminum alloy extrusion forming can only be regular and linear, the variable cross-section design and large-amplitude bending cannot be carried out, the bracket can only be trimmed by machining, the flanging cannot be carried out, and meanwhile, the aluminum alloy material is soft and easy to crush. Due to the defects of the aluminum alloy extruded section, the design of the auxiliary frame longitudinal beam and the auxiliary frame cross beam with variable cross sections and bending structures is difficult to realize, and finally the required collision bending requirement and the energy-absorbing crumpling requirement are difficult to realize in the collision process. Meanwhile, in order to meet various performance requirements of the whole automobile, the number of surplus parts is large, and meanwhile, the welding stability is relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art the defect, satisfy collision installation performance, whole car NVH performance and the whole car travelling comfort of whole car, the utility model provides an electric motor car front sub vehicle frame.

The utility model discloses a solve the technical scheme that its problem adopted and be:

the utility model provides an electric motor car front sub vehicle frame, includes front side crossbeam, rear side crossbeam and connects two longerons of the left and right sides of front side crossbeam and rear side crossbeam, wherein:

the front side cross beam, the rear side cross beam and the left and right longitudinal beams form an inverted trapezoidal frame;

the longitudinal beam is F-shaped and is provided with two transverse extending ends, and the two transverse extending ends are respectively connected with the front side cross beam and the rear side cross beam.

The utility model discloses a preceding sub vehicle frame adopts frame structure, and front side crossbeam, rear side crossbeam wholly present a trapezoidal frame after being connected with left and right sides two longerons, and trapezoidal main aspects is installed at whole car front portion, and the tip is installed at whole car rear portion. When the whole vehicle is subjected to 25% offset collision, the front auxiliary frame can be overlapped with the collision barrier, the collision capacity can be well transmitted to the front auxiliary frame, and the energy concentration in the collision process on the vehicle body is reduced.

Furthermore, the two transverse extending ends are respectively welded with the front side cross beam and the rear side cross beam in a surrounding mode.

Therefore, by adopting the surrounding type welding, the whole body is formed into a structure similar to a full-frame vacuum casting, so that the strength and the durability of the front auxiliary frame are improved.

Furthermore, a preset bending part is arranged at the corner position of the longitudinal beam.

Therefore, the preset bending part is designed at the corner position of the longitudinal beam, so that bending energy absorption can be realized in the collision process, and the collision safety performance of the whole vehicle is well improved.

Furthermore, the cross beam is of a butterfly structure with two large ends and a small middle.

Therefore, the cross beam adopting the butterfly-shaped structural design can realize rigidity and flexibility, the dynamic stiffness of the cross beam can be well improved by designing large sections at two ends, the NVH performance of the whole vehicle is improved, the bending mode and the torsion mode of the cross beam are staggered well by designing small sections at the middle sections, the NVH performance of the whole vehicle is improved, the weight reduction can be realized, and certain contribution is also made to the endurance mileage of the whole vehicle.

Furthermore, a front vehicle body connecting support and a lower swing arm mounting support are further arranged on the longitudinal beam.

Furthermore, flanges are arranged on the front vehicle body connecting support and the lower swing arm mounting support, and the flanges and the longitudinal beams form overlapping joints.

From this, adopt overlap joint mode between this preceding automobile body linking bridge and the lower swing arm installing support and the longeron to the improvement that can be better matches between the singleness, improves welding stability.

Furthermore, the front side cross beam, the rear side cross beam, the left longitudinal beam, the right longitudinal beam, the front vehicle body connecting bracket and the lower swing arm mounting bracket are all manufactured by adopting a sheet metal stamping process.

Therefore, the sheet metal stamping product has the advantages of high precision, light weight, high strength and the like, and meanwhile, the stamping process can also be used for processing workpieces which are difficult to process by other processing methods, such as thin-shell parts, workpieces with flanges and the like.

Compared with the prior art, the utility model discloses an electric motor car front sub vehicle frame has following beneficial effect:

(1) the utility model discloses a preceding sub vehicle frame is down trapezoidal frame structure with its setting, and trapezoidal main aspects installs at whole car front portion, and the tip is installed at whole car rear portion. When the whole vehicle is subjected to 25% offset collision, the front auxiliary frame can be overlapped with the collision barrier, the collision capacity can be well transmitted to the front auxiliary frame, and the energy concentration in the collision process on the vehicle body is reduced.

(2) The utility model discloses a preceding sub vehicle frame adopts butterfly structural design's crossbeam, can realize just gentle and help, designs realization that the large cross-section can be fine at both ends and improves its dynamic stiffness, promotes whole car NVH performance, and the crooked mode of realization that interlude cross-section design can be fine staggers with the mode of twisting reverse, improves whole car NVH performance, also can realize subtracting the weight, also has certain contribution to whole car continuation of the journey mileage.

(3) The utility model discloses a preceding sub vehicle frame adopts the overlap joint mode between its preceding automobile body linking bridge and lower swing arm installing support and the longeron to matching between the improvement singleness that can be better improves welding stability.

Drawings

Fig. 1 is the utility model relates to a sub vehicle frame's structural schematic before electric motor car.

FIG. 2 is a schematic structural view of the front cross member of FIG. 1;

FIG. 3 is a schematic structural view of the rear cross member of FIG. 1;

FIG. 4 is a schematic structural view of the stringer of FIG. 1;

FIG. 5 is a schematic structural view of the front body attachment bracket of FIG. 1;

FIG. 6 is a schematic view of the lower swing arm mounting bracket of FIG. 1;

fig. 7 is a schematic structural view of a part of the front car assembly.

Wherein the reference numerals have the following meanings:

1. a front side cross member; 11. mounting points for front motor suspension; 2. a rear side cross member; 21. mounting points are suspended on the rear motor; 3. a stringer; 31. a laterally projecting end; 32. presetting a bending part; 33. a steering gear mounting point; 34. a stabilizer bar and a lower swing arm mounting point; 35. a rear body mount point; 4. the front vehicle body is connected with a bracket; 41. a front body mount point; 5. a lower swing arm mounting bracket; 51. a lower swing arm mounting point; 6. a front motor is suspended; 7. the rear motor is suspended; 8. a lower swing arm; 9. a steering machine; 10. a stabilizer bar.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example one

Referring to fig. 1-6, the utility model provides an electric motor car front auxiliary frame, including front side crossbeam 1, rear side crossbeam 2 and connect front side crossbeam 1 and rear side crossbeam 2 about two longerons 3, this front side crossbeam 1, rear side crossbeam 2 with about two longerons 3 interconnect and constitute and be the trapezoidal frame of falling. In this embodiment, the large end of the trapezoid is installed at the front of the whole vehicle, and the small end is installed at the rear of the whole vehicle. The longitudinal beam 3 is F-shaped and has two laterally protruding ends 31, and the two laterally protruding ends 31 are connected to the front side cross member 1 and the rear side cross member 2, respectively. Specifically, the two laterally protruding ends 31 are respectively welded to the front cross member 1 and the rear cross member 2 in a surrounding manner.

Therefore, when the whole vehicle is subjected to 25% offset collision, the front auxiliary frame can be overlapped with the collision barrier, the collision capacity can be well transmitted to the front auxiliary frame, and the energy concentration in the collision process on the vehicle body is reduced. In addition, by adopting the surrounding type welding, a similar full-frame vacuum casting structure is integrally formed, so that the strength and the durability of the front auxiliary frame are improved.

Referring to fig. 2-3, the front cross member 1 and the rear cross member 2 are each in a butterfly structure with two large ends and a small middle. Therefore, the cross beam designed by the butterfly structure can realize rigidity and flexibility, and the large sections designed at the two ends can well improve the dynamic rigidity and the NVH performance of the whole vehicle; the cross section of the middle section is designed to be small, the bending mode and the torsion mode can be well staggered, the NVH performance of the whole vehicle is improved, the weight reduction can be realized, and certain contribution is made to the endurance mileage of the whole vehicle.

Referring to fig. 4, a predetermined bending portion 32 is further provided at a corner position of the longitudinal beam 3. In the present embodiment, there are two predetermined bending portions 32. Therefore, the preset bending part 32 is arranged, so that bending energy absorption can be realized in the collision process, and the collision safety performance of the whole vehicle is improved.

Referring to fig. 4, the longitudinal beam 3 is further provided with a front vehicle body connecting bracket 4 and a lower swing arm mounting bracket 5, the peripheries of the front vehicle body connecting bracket 4 and the lower swing arm mounting bracket 5 are both provided with flanges 42, and the flanges 42 and the longitudinal beam 3 form an overlapping joint. From this, all adopt overlap joint mode between this preceding automobile body linking bridge 4, lower swing arm installing support 5 and the longeron 3 to the improvement that can be better matches between the singleness, improves welding stability.

In addition, in the embodiment, the front cross beam 1, the rear cross beam 2, the left and right longitudinal beams 3, the front vehicle body connecting bracket 4 and the lower swing arm mounting bracket 5 are all manufactured by adopting a sheet metal stamping process. Therefore, the sheet metal stamping product has the advantages of high precision, light weight, high strength and the like.

Example two

Referring to fig. 7, the present invention further provides a partial front vehicle assembly, which includes the first front subframe, and the front motor suspension 6, the rear motor suspension 7, the lower swing arm 8, the steering gear 9 and the stabilizer bar 10 mounted on the first front subframe.

Referring to fig. 2, the front cross member 1 is provided with a front motor suspension mounting point 11 for mounting the front motor suspension 6. In the present embodiment, the front motor suspension mounting points 11 have two points and are symmetrically disposed on the front side cross member 1.

Referring to fig. 3, a rear motor suspension mounting point 21 for mounting the rear motor suspension 7 is provided on the rear cross member 2. In the present embodiment, the rear motor suspension mounting point 21 is provided at a middle position of the rear side cross member 2.

Referring to fig. 4, the side member 3 is provided with a steering gear mounting point 33 for mounting the steering gear 9, a stabilizer bar and lower swing arm mounting point 34 for mounting the stabilizer bar 10 and a part of the lower swing arm 8, and a rear vehicle body mounting point 35 for mounting the rear vehicle body.

Referring to fig. 5, the front vehicle body connecting bracket 4 is provided with a front vehicle body mounting point 41 for mounting a front vehicle body.

Referring to fig. 6, the lower swing arm mounting bracket 5 is provided with a lower swing arm mounting point 51 for mounting the lower swing arm 8.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. The utility model provides an electric motor car front sub vehicle frame, includes front side crossbeam (1), rear side crossbeam (2) and connects two longerons (3) of the left and right sides of front side crossbeam (1) and rear side crossbeam (2), its characterized in that:

the front side cross beam (1), the rear side cross beam (2) and the left and right longitudinal beams (3) form an inverted trapezoidal frame;

the longitudinal beam (3) is F-shaped and is provided with two transverse extending ends (31), and the two transverse extending ends (31) are respectively connected with the front side cross beam (1) and the rear side cross beam (2).

2. Front sub-frame according to claim 1, characterised in that said two laterally projecting ends (31) are respectively surround welded with the front (1) and rear (2) side cross members.

3. Front sub frame according to claim 1, characterised in that the corner positions of the longitudinal beams (3) are provided with predetermined bends (32).

4. The front subframe according to claim 1 wherein the front cross member (1) and the rear cross member (2) each have a butterfly-shaped structure with two large ends and a small middle.

5. Front sub-frame according to any of claims 1-4, characterised in that the longitudinal beams (3) are further provided with front body attachment brackets (4) and a rocker arm mounting bracket (5).

6. The front subframe according to claim 5 wherein the front body attachment bracket (4) and the rocker mounting bracket (5) are each provided with a flange (42), the flanges (42) forming an overlap joint with the side member (3).

7. The front auxiliary frame according to claim 6, wherein the front side cross beam (1), the rear side cross beam (2), the left and right longitudinal beams (3), the front vehicle body connecting bracket (4) and the lower swing arm mounting bracket (5) are all manufactured by adopting a sheet metal stamping process.