CN219584285U - Auxiliary frame structure and car - Google Patents

Abstract

The utility model discloses an auxiliary frame structure and an automobile, which comprise a front cross beam, a front longitudinal beam, a lower swing arm front end mounting bracket, a rear longitudinal beam, a middle cross beam and a rear cross beam which are manufactured by adopting aluminum profiles, wherein the front longitudinal beam comprises a left front longitudinal beam and a right front longitudinal beam which are arranged in a mirror mode, the front ends of the left front longitudinal beam and the right front longitudinal beam are connected to the front cross beam, the rear longitudinal beam comprises a left rear longitudinal beam and a right rear longitudinal beam which are arranged in a mirror mode, the lower swing arm front end mounting bracket comprises a lower swing arm left front end mounting bracket and a lower swing arm right front end mounting bracket which are arranged in a mirror mode, the lower swing arm left front end mounting bracket is connected between the rear end of the left front longitudinal beam and the front end of the left rear longitudinal beam, the lower swing arm right front end mounting bracket is connected between the rear end of the right front longitudinal beam and the front end of the right rear longitudinal beam, the two ends of the rear cross beam are connected to the left rear longitudinal beam and the right rear longitudinal beam, and the two ends of the middle cross beam are positioned between the front cross beam and the rear cross beam. The extrusion profiles with different structures are combined, so that the rigidity and strength of the auxiliary frame are greatly improved.

Description

Auxiliary frame structure and car

Technical Field

The utility model is used in the field of automobiles, and particularly relates to a subframe structure and an automobile.

Background

In recent years, with the popularization of electric vehicles, consumers have higher and higher requirements on driving feeling, and auxiliary frames are used as important chassis parts of the vehicles, and play a vital role in reducing the input of road surface and motor vibration and isolating the road surface and motor vibration. At present, due to cost limitation and technical capability limitation, many auxiliary frames are difficult to consider all the optimal performances.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art, and provides an auxiliary frame structure and an automobile, which are combined through extruded profiles with different structures, so that the rigidity and the strength of the auxiliary frame are greatly improved.

The technical scheme adopted for solving the technical problems is as follows:

in a first aspect, an auxiliary frame structure comprises a front cross beam, a front longitudinal beam, a lower swing arm front end mounting bracket, a rear longitudinal beam, a middle cross beam and a rear cross beam which are made of aluminum profiles, wherein the front longitudinal beam comprises a left front longitudinal beam and a right front longitudinal beam which are arranged in a mirror mode, the front ends of the left front longitudinal beam and the right front longitudinal beam are connected to the front cross beam, the rear longitudinal beam comprises a left rear longitudinal beam and a right rear longitudinal beam which are arranged in a mirror mode, the lower swing arm front end mounting bracket comprises a lower swing arm left front end mounting bracket and a lower swing arm right front end mounting bracket which are arranged in a mirror mode, the lower swing arm left front end mounting bracket is connected between the left front longitudinal beam rear end and the left rear longitudinal beam front end, the lower swing arm right front end mounting bracket is connected between the right front longitudinal beam rear end and the right rear longitudinal beam front end, the two ends of the rear cross beam are connected to the left rear longitudinal beam and the right rear longitudinal beam, and the two ends of the middle cross beam are connected to the left rear longitudinal beam and the right rear longitudinal beam.

With reference to the first aspect, in certain implementation manners of the first aspect, a first flange formed by extrusion is disposed on a rear side of the front cross beam, the first flange includes a first upper flange and a first lower flange, a first groove space is formed between the first upper flange and the first lower flange, and front ends of the left front longitudinal beam and the right front longitudinal beam are embedded into the first groove space and overlap with the first flange and are welded with the front cross beam.

With reference to the first aspect and the foregoing implementation manners, in some implementation manners of the first aspect, a front side of the lower swing arm left front end mounting bracket and a front side of the lower swing arm right front end mounting bracket are provided with second flanges formed by extrusion, the second flanges include a second upper flange and a second lower flange, a second groove space is formed between the second upper flange and the second lower flange, a rear end of the left front longitudinal beam is embedded into the second groove space of the lower swing arm left front end mounting bracket and is lapped with the second flange and is welded with the lower swing arm left front end mounting bracket, and a rear end of the right front longitudinal beam is embedded into the second groove space of the lower swing arm right front end mounting bracket and is welded with the lower swing arm right front end mounting bracket.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a third flange formed by extrusion is disposed on a rear side of the lower swing arm left front end mounting bracket and a rear side of the lower swing arm right front end mounting bracket, the third flange includes a third upper flange and a third lower flange, a third groove space is formed between the third upper flange and the third lower flange, a front end of the left rear longitudinal beam is embedded into the third groove space of the lower swing arm left front end mounting bracket and is lapped with the third flange, and is welded with the lower swing arm left front end mounting bracket, and a front end of the right rear longitudinal beam is embedded into the third groove space of the lower swing arm right front end mounting bracket and is welded with the lower swing arm right front end mounting bracket.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a fourth groove space is provided at the top of the lower swing arm left front end mounting bracket and the lower swing arm right front end mounting bracket, a left intermediate vehicle body mounting bracket is welded in the fourth groove space of the lower swing arm left front end mounting bracket, and a right intermediate vehicle body mounting bracket is welded in the fourth groove space of the lower swing arm right front end mounting bracket.

With reference to the first aspect and the foregoing implementation manner, in some implementation manners of the first aspect, a steering engine rear end mounting bracket is disposed between the middle cross beam and the rear cross beam, and one side of the steering engine rear end mounting bracket is mounted on the left rear longitudinal beam.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the rear ends of the left rear longitudinal beam and the right rear longitudinal beam incline toward the middle part, the left rear longitudinal beam, the right rear longitudinal beam, the middle cross beam and the rear cross beam form a trapezoid frame, a lower swing arm left rear end mounting bracket is arranged at the outer side of the rear end of the left rear longitudinal beam, a left rear side reinforcing vehicle body mounting bracket is arranged at the rear side of the lower swing arm left rear end mounting bracket, a lower swing arm right rear end mounting bracket is arranged at the outer side of the rear end of the right rear longitudinal beam, and a right rear side reinforcing vehicle body mounting bracket is arranged at the rear side of the lower swing arm right rear end mounting bracket.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, the left rear side reinforced vehicle body mounting bracket and the right rear side reinforced vehicle body mounting bracket are made of aluminum profiles, and the left rear side reinforced vehicle body mounting bracket and the right rear side reinforced vehicle body mounting bracket have grid-shaped reinforcing ribs.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the left rear longitudinal beam is provided with a left stabilizer sleeve, the left stabilizer sleeve penetrates through the left rear longitudinal beam, the right rear longitudinal beam is provided with a right stabilizer sleeve, the right stabilizer sleeve penetrates through the right rear longitudinal beam, the front cross beam is provided with a front suspension mounting point, and the middle cross beam is provided with a rear suspension mounting point.

In a second aspect, an automobile includes the subframe structure according to any implementation manner of the first aspect.

One of the above technical solutions has at least one of the following advantages or beneficial effects: the technical scheme of the utility model combines extruded profiles with different structures, avoids interference with peripheral parts, increases rigidity and strength of the profile, ensures reasonable structural design and optimal cost control. On the premise of ensuring each excellent performance of the auxiliary frame, the weight is reduced as much as possible by structural optimization, and finally the cost is reduced, thereby being beneficial to the mass production feasibility of products and achieving the satisfaction of customers.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a structural top view of one embodiment of the subframe structure of the present utility model;

FIG. 2 is a side view of the structure of one embodiment shown in FIG. 1;

FIG. 3 is a schematic view of the front cross member, front side rail, and lower swing arm front end mounting bracket of one embodiment shown in FIG. 1;

fig. 4 is a schematic view of a left front end mounting bracket and a left rear side member connection structure of the lower swing arm of the embodiment shown in fig. 1.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the present utility model, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present utility model, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number; "above", "below", "within" and the like are understood to include this number. In the description of the present utility model, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the present utility model, unless clearly defined otherwise, terms such as "disposed," "mounted," "connected," and the like should be construed broadly and may be connected directly or indirectly through an intermediate medium, for example; the connecting device can be fixedly connected, detachably connected and integrally formed; can be mechanically connected, electrically connected or capable of communicating with each other; may be a communication between two elements or an interaction between two elements. The specific meaning of the words in the utility model can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.

In which fig. 1 shows a reference direction coordinate system of an embodiment of the present utility model, and the embodiment of the present utility model is described below with reference to the directions shown in fig. 1.

Referring to fig. 1, an embodiment of the present utility model provides a subframe structure, which includes a front cross member 1 made of an aluminum profile, a front longitudinal member, a lower swing arm front end mounting bracket, a rear longitudinal member, a middle cross member 2, and a rear cross member 3, wherein the front cross member 1 is laterally arranged, one end of the front cross member 1 is provided with a left front vehicle body mounting bracket 4, and the other end is provided with a right front vehicle body mounting bracket 5. The front longitudinal beam comprises a left front longitudinal beam 6 and a right front longitudinal beam 7 which are arranged in a mirror mode, the front ends of the left front longitudinal beam 6 and the right front longitudinal beam 7 are connected to the front transverse beam 1, the rear longitudinal beam comprises a left rear longitudinal beam 8 and a right rear longitudinal beam 9 which are arranged in a mirror mode, the front longitudinal beam and the rear longitudinal beam extend longitudinally, the front end mounting bracket of the lower swing arm comprises a left front end mounting bracket 10 of the lower swing arm and a right front end mounting bracket 11 of the lower swing arm, which are arranged in a mirror mode, the front end mounting bracket 10 of the lower swing arm is connected between the rear end of the left front longitudinal beam 6 and the front end of the left rear longitudinal beam 8, the front end mounting bracket 11 of the right front end of the lower swing arm is connected between the rear end of the right front longitudinal beam 7 and the front end of the right rear longitudinal beam 9, the two ends of the rear transverse beam 3 are connected to the left rear longitudinal beam 8 and the right rear longitudinal beam 9, and the two ends of the middle transverse beam 2 are connected to the left rear longitudinal beam 8 and the right rear longitudinal beam 9, and are located between the front transverse beam 1 and the rear transverse beam 3.

According to the technical scheme, the extrusion profiles with different structures are combined to form the full extrusion aluminum alloy auxiliary frame, so that interference with peripheral parts is avoided, meanwhile, the rigidity and strength of the profile are increased, the structural design is reasonable, and the cost control is optimal. On the premise of ensuring each excellent performance of the auxiliary frame, the weight is reduced as much as possible by structural optimization, and finally the cost is reduced, thereby being beneficial to the mass production feasibility of products and achieving the satisfaction of customers.

Referring to fig. 2 and 3, the upper front ends and the lower rear ends of the two front longitudinal beams are respectively provided with a crumple hole 12, the strength grade of the rear side reinforced vehicle body mounting bracket and the vehicle body connecting bolt is improved, the front longitudinal beam fully absorbs energy and crumples when the vehicle collides, the rear side reinforced vehicle body mounting bracket does not fall off, the battery pack is not extruded and deformed, the cabin compression amount is increased, and the safety of passengers is ensured.

The cross sections of the two front longitudinal beams are rectangular with the width being larger than the height, the transverse width of the two front longitudinal beams is increased, the rigidity is improved, and even if the front longitudinal beams are impacted by larger external force, the deformation of the front longitudinal beams is smaller, so that the stability performance is improved; the front end and the rear end of the front longitudinal beam are respectively increased with the flanging contact areas of the front cross beam 1 and the front end mounting bracket of the lower swing arm, so that the welding strength of the connecting position is improved, and the durability of the whole vehicle is improved.

Referring to fig. 3, the left front body mounting bracket 4 and the right front body mounting bracket 5 are internally provided with reinforcing ribs, and the noise of the road surface and the motor vibration input is reduced while the rigidity strength is improved through the optimization of the reinforcing ribs, so that the noise comfort of passengers in the vehicle is greatly improved.

In some embodiments, referring to fig. 2 and 3, the rear side of the front cross member 1 is provided with a first flange formed by extrusion, the first flange includes a first upper flange 13 and a first lower flange 14, a first groove space is formed between the first upper flange 13 and the first lower flange 14, and the front ends of the left front side member 6 and the right front side member 7 are embedded in the first groove space to overlap the first flange and welded with the front cross member 1. The rear side of the front cross beam 1 forms an arch-shaped structure through a first groove-shaped space, the first groove-shaped space increases the welding seam length and the effective seat surface area of the lap joint position of the front cross beam 1 and the front longitudinal beam, and further the strength and the rigidity of the lap joint position are improved, the durability of the lap joint position is ensured, and the whole vehicle performance is improved.

In some embodiments, referring to fig. 2 and 3, the front sides of the lower swing arm left front end mounting bracket 10 and the lower swing arm right front end mounting bracket 11 are provided with a second flange formed by extrusion, the second flange comprises a second upper flange 15 and a second lower flange 16, a second groove space is formed between the second upper flange 15 and the second lower flange 16, the rear end of the left front longitudinal beam 6 is embedded into the second groove space of the lower swing arm left front end mounting bracket 10 and is lapped with the second flange and is welded with the lower swing arm left front end mounting bracket 10, and the rear end of the right front longitudinal beam 7 is embedded into the second groove space of the lower swing arm right front end mounting bracket 11 and is welded with the lower swing arm right front end mounting bracket 11. The front side of lower swing arm front end installing support forms bow style of calligraphy structure through the second cell type space, and the second cell type space has increased the weld length and the effective seat area of front longitudinal beam and lower swing arm front end installing support's overlap joint position, and then promotes overlap joint position's intensity and rigidity, guarantees overlap joint position's durability, finally does benefit to and promotes whole car performance.

In some embodiments, referring to fig. 2, 3 and 4, the rear sides of the lower swing arm left front end mounting bracket 10 and the lower swing arm right front end mounting bracket 11 are provided with a third flange formed by extrusion, the third flange comprises a third upper flange 17 and a third lower flange 18, a third groove space is formed between the third upper flange 17 and the third lower flange 18, the front end of the left rear longitudinal beam 8 is embedded into the third groove space of the lower swing arm left front end mounting bracket 10 and is lapped with the third flange and welded with the lower swing arm left front end mounting bracket 10, and the front end of the right rear longitudinal beam 9 is embedded into the third groove space of the lower swing arm right front end mounting bracket 11 and is welded with the lower swing arm right front end mounting bracket 11. The rear side of the front end installing support of the lower swing arm forms an arch-shaped structure through a third groove-shaped space, the third groove-shaped space increases the welding seam length and the effective seat surface area of the lap joint position of the rear longitudinal beam and the front end installing support of the lower swing arm, and further the strength and the rigidity of the lap joint position are improved, the durability of the lap joint position is guaranteed, and finally the performance of the whole vehicle is improved.

In some embodiments, referring to fig. 1, 2, 3 and 4, a fourth groove space 21 is provided at the top of the lower swing arm left front end mounting bracket 10 and the lower swing arm right front end mounting bracket 11, a left side intermediate vehicle body mounting bracket 19 is welded in the fourth groove space 21 of the lower swing arm left front end mounting bracket 10, and a right side intermediate vehicle body mounting bracket 20 is welded in the fourth groove space 21 of the lower swing arm right front end mounting bracket 11. The fourth groove space 21 is convenient for increasing the contact area with the left side intermediate body mounting bracket 19 and the right side intermediate body mounting bracket 20, and improving the strength and rigidity of the welding position.

In some embodiments, referring to fig. 1, a steering rear end mounting bracket 22 is arranged between the middle cross beam 2 and the rear cross beam 3, one side of the steering rear end mounting bracket 22 is mounted on the left rear longitudinal beam 8, in this embodiment, the steering rear end mounting bracket 22 is welded between the middle cross beam 2, the rear cross beam 3 and the left rear longitudinal beam 8, the structure strengthens the connection of the two cross beams, local stress concentration is avoided, and lateral and longitudinal rigidity of a steering rear point is ensured.

In some embodiments, referring to fig. 1, the rear ends of the left and right rear stringers 8, 9 are inclined to the middle, the left, right, middle and rear stringers 8, 9, 2 and 3 form a ladder frame to reduce the weight lifting structural strength, the rear end outer side of the left rear stringer 8 is provided with a lower swing arm left rear end mounting bracket 23, the rear side of the lower swing arm left rear end mounting bracket 23 is provided with a left rear side reinforcement vehicle body mounting bracket 24, the rear end outer side of the right rear stringer 9 is provided with a lower swing arm right rear end mounting bracket 25, and the rear side of the lower swing arm right rear end mounting bracket 25 is provided with a right rear side reinforcement vehicle body mounting bracket 26.

Further, referring to fig. 1, the left and right rear side reinforcement vehicle body mounting brackets 24, 26 are made of aluminum profiles, and the left and right rear side reinforcement vehicle body mounting brackets 24, 26 have lattice-like reinforcing ribs. The strength durability is guaranteed, the weight and the cost can be reduced, and the mounting hole core of the rear side reinforced vehicle body mounting bracket further absorbs energy generated by collision in the stress crushing direction of the front longitudinal beam, so that the auxiliary frame is ensured not to extrude a rear battery pack.

In some embodiments, referring to fig. 4, the left rear rail 8 is provided with a left stabilizer sleeve 27, the left stabilizer sleeve 27 extending through the left rear rail 8, and the right rear rail 9 is provided with a right stabilizer sleeve extending through the right rear rail 9. The stabilizer bar sleeve penetrates through the rear inclined longitudinal beam, so that the length of a welding line and the welding strength are increased, the durability is ensured to meet the requirement, and meanwhile, the flatness and the parallelism precision of the surface of the stabilizer bar sleeve can be ensured.

Furthermore, the front cross member 1 is provided with a front suspension mounting point 28, and the middle cross member 2 is provided with a rear suspension mounting point 29.

The embodiment of the utility model also provides an automobile, which comprises the auxiliary frame structure in any embodiment. Through the topology simulation analysis of many rounds, single article and real car collision are to standard analysis, adopt the sub vehicle frame structure in any embodiment above, not only effectively solve real car noise, steady performance and collision security, can also manage and control the fluctuation in the cost and be minimum.

In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The present utility model is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and these equivalent modifications or substitutions are intended to be included in the scope of the present utility model as defined in the appended claims.

Claims (10)

1. The utility model provides a sub vehicle frame structure, its characterized in that, including front cross beam, front longitudinal beam, lower swing arm front end installing support, rear longitudinal beam, well crossbeam and the rear cross beam that adopts aluminium alloy preparation, front longitudinal beam includes left front longitudinal beam and right front longitudinal beam that the mirror image was arranged, left front longitudinal beam and right front longitudinal beam's front end connect in front cross beam, the rear longitudinal beam includes left rear longitudinal beam and right rear longitudinal beam that the mirror image was arranged, lower swing arm front end installing support includes lower swing arm left front end installing support and lower swing arm right front end installing support that the mirror image was arranged, lower swing arm left front end installing support connect in left front longitudinal beam rear end with between the left rear longitudinal beam front end, lower swing arm right front end installing support connect in between right front longitudinal beam rear end with right rear longitudinal beam front end, the both ends of rear cross beam connect in left rear longitudinal beam and right rear longitudinal beam, and be located between front longitudinal beam and the rear cross beam.

2. The subframe structure according to claim 1, wherein a first flange formed by extrusion is provided on a rear side of the front cross member, the first flange includes a first upper flange and a first lower flange, a first groove-shaped space is formed between the first upper flange and the first lower flange, and front ends of the left front side member and the right front side member are embedded in the first groove-shaped space to overlap the first flange and welded with the front cross member.

3. The subframe structure of claim 1, wherein the front sides of the lower swing arm left front end mounting bracket and the lower swing arm right front end mounting bracket are provided with second flanges formed by extrusion, the second flanges comprise second upper flanges and second lower flanges, a second groove space is formed between the second upper flanges and the second lower flanges, the rear end of the left front longitudinal beam is embedded into the second groove space of the lower swing arm left front end mounting bracket and is lapped with the second flanges and is welded with the lower swing arm left front end mounting bracket, and the rear end of the right front longitudinal beam is embedded into the second groove space of the lower swing arm right front end mounting bracket and is welded with the lower swing arm right front end mounting bracket.

4. The subframe structure according to claim 1, wherein the rear sides of the lower swing arm left front end mounting bracket and the lower swing arm right front end mounting bracket are provided with third flanges formed by extrusion, the third flanges include third upper flanges and third lower flanges, a third groove space is formed between the third upper flanges and the third lower flanges, the front end of the left rear side member is embedded into the third groove space of the lower swing arm left front end mounting bracket and is lapped with the third flanges and is welded with the lower swing arm left front end mounting bracket, and the front end of the right rear side member is embedded into the third groove space of the lower swing arm right front end mounting bracket and is welded with the lower swing arm right front end mounting bracket.

5. The subframe structure of claim 1, wherein the top of the lower swing arm left front end mounting bracket and the lower swing arm right front end mounting bracket is provided with a fourth slot-type space, wherein a left side intermediate vehicle body mounting bracket is welded in the fourth slot-type space of the lower swing arm left front end mounting bracket, and wherein a right side intermediate vehicle body mounting bracket is welded in the fourth slot-type space of the lower swing arm right front end mounting bracket.

6. The subframe structure of claim 1, wherein a steering engine rear end mounting bracket is provided between said center cross member and said rear cross member, one side of said steering engine rear end mounting bracket being mounted to said left rear side member.

7. The subframe structure according to claim 1, wherein the rear ends of the left and right rear stringers are inclined toward the middle, the left, right, center and rear cross members form a ladder frame, a lower swing arm left rear end mounting bracket is provided on the rear end outer side of the left rear stringer, a left rear side reinforcement vehicle body mounting bracket is provided on the rear side of the lower swing arm left rear end mounting bracket, a lower swing arm right rear end mounting bracket is provided on the rear end outer side of the right rear stringer, and a right rear side reinforcement vehicle body mounting bracket is provided on the rear side of the lower swing arm right rear end mounting bracket.

8. The subframe structure of claim 7 wherein said left and right rear side reinforcement body mounting brackets are made of aluminum profiles, said left and right rear side reinforcement body mounting brackets having lattice-like reinforcing ribs.

9. The subframe structure of claim 1, wherein the left rear rail is provided with a left stabilizer bushing, the left stabilizer bushing extends through the left rear rail, the right rear rail is provided with a right stabilizer bushing, the right stabilizer bushing extends through the right rear rail, the front cross member is provided with a front suspension mounting point, and the middle cross member is provided with a rear suspension mounting point.

10. An automobile comprising the subframe structure according to any one of claims 1 to 9.