CN219584284U - Auxiliary frame and automobile - Google Patents

Abstract

The utility model discloses an auxiliary frame and an automobile, which comprise a front cross beam, a first front longitudinal beam, a second front longitudinal beam, a first front automobile body mounting bracket, a second front automobile body mounting bracket, a first lower swing arm front end mounting bracket and a second lower swing arm front end mounting bracket, wherein the first front longitudinal beam is connected between the front cross beam and the first lower swing arm front end mounting bracket, the second front longitudinal beam is connected between the front cross beam and the second lower swing arm front end mounting bracket, the front cross beam is formed by extrusion of aluminum alloy, the rear side of the front cross beam is provided with a first flanging formed by extrusion, the first front longitudinal beam and the second front longitudinal beam are lapped on the first flanging and are welded with the front cross beam, the front side of the first lower swing arm front end mounting bracket and the front side of the second lower swing arm front end mounting bracket are provided with a second flanging formed by extrusion, the first front longitudinal beam is lapped on the second flanging and are welded, and the second front longitudinal beam is lapped on the second flanging and are welded. The utility model can effectively improve the operation stability of the vehicle and ensure the least increase of cost and weight.

Description

Auxiliary frame and automobile

Technical Field

The utility model is used in the field of automobiles, and particularly relates to an auxiliary frame and an automobile.

Background

In recent years, with the popularization of electric vehicles, consumers have higher and higher driving feeling requirements, auxiliary frames are used as important chassis parts of the vehicles, the auxiliary frames play a vital role in reducing the input of road surfaces and motor vibration and isolating the road surfaces and the motor vibration, aluminum alloy materials have higher yield strength and extensibility, and light weight effects are obvious, so that the electric vehicles are beneficial to improving riding comfort, stability and endurance mileage, and have wider and higher popularization degree.

The prior art has the technical defects that: because the aluminum alloy section is produced by an extrusion process, the surface cannot be manufactured into an irregular curved surface, and in order to reduce noise and improve stability, the aluminum alloy section can be thickened only or cast, so that the aluminum alloy section is not beneficial to light weight and the cost is increased. The prior art can not realize effective noise reduction and effective improvement of stability performance under the premise of ensuring optimal cost and lightest weight.

Disclosure of Invention

The utility model aims to at least solve one of the technical problems in the prior art and provide an auxiliary frame and an automobile, which can effectively improve the operation stability of the automobile and ensure the least increase of cost and weight.

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

in a first aspect, an auxiliary frame, including front cross beam, first front longitudinal beam, second front longitudinal beam, first front body installing support, second front body installing support, first swing arm front end installing support and second swing arm front end installing support down, the front cross beam transversely extends to the second end by first end, first front body installing support set up in the first end of front cross beam, second front body installing support set up in the second end of front cross beam, first front longitudinal beam connect in front cross beam with between the first swing arm front end installing support down, second front longitudinal beam connect in front cross beam with between the swing arm front end installing support down in the second, first front longitudinal beam and second front longitudinal beam each other be the mirror image, the front cross beam adopts aluminum alloy extrusion, the rear side of front cross beam be equipped with through extrusion the first turn-ups that form, first front longitudinal beam with the second front overlap joint in first turn-ups and with the front cross beam welding, first front end installing support down the second swing arm front end adopt the first swing arm front end and the second swing arm front end to adopt the second swing arm front end to install the first swing arm front end and the second swing arm front end installing support down the overlap joint, the first front longitudinal beam and the second swing arm front end installing support down the side of swing arm front end installing support down the mirror image.

With reference to the first aspect, in certain implementation manners of the first aspect, the first front longitudinal beam and the second front longitudinal beam are formed by extrusion of an aluminum alloy, and a section of the first front longitudinal beam and the second front longitudinal beam is rectangular with a width larger than a height.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, the first flange includes a first up-flange and a first down-flange, and a first groove space overlapping the first front side member and the second front side member is formed between the first up-flange and the first down-flange.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, the second flange includes a second up-flange and a second down-flange, and a second groove space overlapping the first front side member and the second front side member is formed between the second up-flange and the second down-flange.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, a support plane is disposed on a rear side of the front cross member, and the support plane is connected with end surfaces of the first front side member and the second front side member through a weld seam.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the first front body mounting bracket and the second front body mounting bracket are formed by extrusion of an aluminum alloy, the first front body mounting bracket is connected to a first end of the front cross beam through a welding seam, and the second front body mounting bracket is connected to a second end of the front cross beam through a welding seam.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, a plurality of first reinforcing ribs are disposed inside the first front vehicle body mounting bracket and the second front vehicle body mounting bracket, a plurality of triangular cavities are formed inside the first front vehicle body mounting bracket by separating the first reinforcing ribs, and a plurality of triangular cavities are formed inside the second front vehicle body mounting bracket by separating the first reinforcing ribs.

With reference to the first aspect and the foregoing implementation manners, in certain implementation manners of the first aspect, the first front body mounting bracket and the second front body mounting bracket are provided with a front suspension mounting groove, and the first front body mounting bracket and the second front body mounting bracket are provided with a second reinforcing rib outside the front suspension mounting groove.

With reference to the first aspect and the foregoing implementation manner, in certain implementation manners of the first aspect, a bottom portion of the front beam is provided with a convex surface, and the convex surface has a front end inclined plane and a rear end inclined plane, and the front end inclined plane and the rear end inclined plane form a V-shaped section at the bottom portion of the front beam.

In a second aspect, an automobile includes the subframe according to any one of the first aspects.

One of the above technical solutions has at least one of the following advantages or beneficial effects: according to the technical scheme, the first front vehicle body mounting bracket and the second front vehicle body mounting bracket are connected through the front cross beam, the first front longitudinal beam and the second front longitudinal beam are respectively connected with the front cross beam, the first lower swing arm front end mounting bracket and the second lower swing arm front end mounting bracket, so that the strength and the rigidity of the front longitudinal beam are effectively improved, and the structural complexity is avoided. Through adopting turn-ups overlap joint and welded mode, increase the contact surface of front longitudinal beam and lower swing arm front end installing support, and then promote the welding strength of front longitudinal beam and lower swing arm front end installing support overlap joint position, the vehicle can effectively resist external force impact under the limit turning condition, is favorable to promoting the steady performance of operating. The technical scheme of the utility model can effectively improve the operation stability of the vehicle and ensure that the cost and the weight are increased least.

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 schematic structural view of an embodiment of a subframe 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 structure of one embodiment shown in FIG. 1;

fig. 4 is a schematic view of a first front body mounting bracket structure of the one 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.

Referring to fig. 1 and 2, an embodiment of the present utility model provides an auxiliary frame, which includes a front cross member 100, a first front longitudinal member 200, a second front longitudinal member 300, a first front body mounting bracket 400, a second front body mounting bracket 500, a first swing arm front end mounting bracket 600 and a second swing arm front end mounting bracket 700, wherein the front cross member 100 extends from a first end to a second end in a transverse direction, the first front body mounting bracket 400 is disposed at the first end of the front cross member 100, the second front body mounting bracket 500 is disposed at the second end of the front cross member 100, the first front longitudinal member 200 and the second front longitudinal member 300 extend in a longitudinal direction, the first front longitudinal member 200 is connected between the front cross member 100 and the first swing arm front end mounting bracket 600, the second front longitudinal member 300 is connected between the front cross member 100 and the second swing arm front end mounting bracket 700, the first front longitudinal member 200 and the second front longitudinal member 300 are mirror images, the rear side of the front cross member 100 is provided with a first flange 101 formed by extrusion, the first front longitudinal member 200 and the second front longitudinal member 300 are disposed at the first swing arm front end of the first swing arm 100 and the second swing arm front end of the swing arm bracket 600, the first swing arm front end of the first swing arm 300 is welded with the first swing arm front end of the first swing arm 700, and the second swing arm front end of the first swing arm 300 is welded with the first swing arm front end of the first swing arm front end 700, and the first swing arm front end of the first swing arm 300 is welded 601, and the front end of the front longitudinal member is welded to the front end of the front frame is welded to the front end of the front side of the front frame 700.

Referring to fig. 1, in the technical solution of the present utility model, a front cross member 100 is used to connect a first front body mounting bracket 400 and a second front body mounting bracket 500, and a first front longitudinal beam 200 and a second front longitudinal beam 300 are respectively connected with the front cross member 100, a first lower swing arm front end mounting bracket 600 and a second lower swing arm front end mounting bracket 700, so that the strength and rigidity of the front longitudinal beam are effectively improved, and the structural complexity is avoided. Through adopting turn-ups overlap joint and welded mode, increase the contact surface of front longitudinal beam and lower swing arm front end installing support, and then promote the welding strength of front longitudinal beam and lower swing arm front end installing support overlap joint position, the vehicle can effectively resist external force impact under the limit turning condition, is favorable to promoting the steady performance of operating. The technical scheme of the utility model can effectively improve the operation stability of the vehicle and ensure that the cost and the weight are increased least.

In some embodiments, referring to fig. 1 and 2, the first front side member 200 and the second front side member 300 are formed by extrusion of an aluminum alloy, and the cross sections of the first front side member 200 and the second front side member 300 are rectangular with a width greater than a height. The width of the first front side member 200 and the second front side member 300 is appropriately increased, which has the advantages that: 1) The contact surface of the front longitudinal beam and the front end mounting bracket of the lower swing arm is increased, so that the welding strength of the lap joint position of the front longitudinal beam and the front end mounting bracket of the lower swing arm is improved, and the high-strength front longitudinal beam can effectively resist external force impact under the condition of extreme turning of the vehicle; 2) The transverse dimension of the front longitudinal beam is wider, so that the rigidity is improved, and even if the front longitudinal beam is impacted by larger external force, the deformation of the front longitudinal beam is smaller, so that the stability performance is improved.

In some embodiments, referring to fig. 1, 2 and 3, the first flange 101 includes a first up-flange and a first down-flange, and a first groove space overlapping the first front side member 200 and the second front side member 300 is formed between the first up-flange and the first down-flange, and the first groove space increases the length of a weld seam and an effective seat surface area at an overlapping position of the front cross member 100 and the front side member, so as to further improve the strength and rigidity of the overlapping position, and finally facilitate improving the performance of the whole vehicle.

In some embodiments, referring to fig. 1 and 2, the second flange 601 includes a second upper flange and a second lower flange, and a second groove space overlapping the first front side member 200 and the second front side member 300 is formed between the second upper flange and the second lower flange, and the second groove space increases the length of a welding seam and the effective seat area of the overlapping position of the front end mounting bracket of the lower swing arm and the front side member, thereby improving the strength and the rigidity of the overlapping position, and finally being beneficial to improving the performance of the whole vehicle.

Referring to fig. 3, a supporting plane 102 is disposed at the rear side of the front cross beam 100, the supporting plane 102 is connected with the end surfaces of the first front longitudinal beam 200 and the second front longitudinal beam 300 through welding seams, the supporting plane 102 further increases the welding seam length and the effective seat surface area of the lap joint position of the front cross beam 100 and the front longitudinal beam, and further improves the strength and the rigidity of the lap joint position, and finally facilitates the improvement of the performance of the whole vehicle.

In some embodiments, referring to fig. 1, the first front body mounting bracket 400 and the second front body mounting bracket 500 are formed by extrusion of an aluminum alloy, the entire subframe is a fully extruded aluminum alloy subframe, the first front body mounting bracket 400 and the second front body mounting bracket 500 have mating surfaces that are welded to the top end surface of the front cross member 100, the first front body mounting bracket 400 is connected to the first end of the front cross member 100 by a weld, and the second front body mounting bracket 500 is connected to the second end of the front cross member 100 by a weld.

Further, referring to fig. 4, a plurality of first reinforcing ribs 401 are provided inside the first front body mounting bracket 400 and the second front body mounting bracket 500, a plurality of triangular cavities are formed by separating the first reinforcing ribs 401 inside the first front body mounting bracket 400, and a plurality of triangular cavities are formed by separating the first reinforcing ribs 401 inside the second front body mounting bracket 500. The automobile body noise can be transmitted to the automobile body panel beating through the up end mounting hole of preceding automobile body installing support, adopts the reasonable first strengthening rib 401 of structural layout, is favorable to filtering the noise at the maximum under the optimal prerequisite of cost and weight.

Further, referring to fig. 4, the first front body mounting bracket 400 and the second front body mounting bracket 500 are provided with a front suspension mounting groove 402, the first front body mounting bracket 400 and the second front body mounting bracket 500 are provided with a second reinforcing rib 403 on the outer side of the front suspension mounting groove 402, when the vehicle runs on a complex road condition, the section bars at the two ends of the front suspension mounting groove 402 of the front body mounting bracket can swing left and right due to the influence of external force, and then resonance is generated, at the moment, the second reinforcing rib 403 can effectively inhibit swing, reduce resonance occurrence, and further reduce noise transmission to the vehicle body.

In recent years, consumers have increasingly tended to drive themselves to suburb play, and the protruding barriers on suburb road surfaces are more, in order to ensure consumer driving safety, it is necessary to consider the influence of protruding barriers on complex and severe roads on the safety of vehicles, and the sub-frame cross beam is located at the front end position below the vehicles, is nearer to the ground, and is easy to contact with ground barriers, and when the vehicles advance or back through ground bumps, the cross beam of the conventional sub-frame is horizontal due to the fact that the lower surface of the cross beam interferes with the bumps, so that the vehicles cannot smoothly pass through.

Referring to fig. 2, in some embodiments of the present utility model, the bottom of the front cross member 100 is provided with a convex surface having a front end inclined surface 103 and a rear end inclined surface 104, the convex surface being composed of front and rear two inclined surfaces having a set length value and an angle value, the front end inclined surface 103 and the rear end inclined surface 104 forming a V-shaped cross section at the bottom of the front cross member 100.

When the vehicle advances through the ground bump, the front end inclined surface of the convex surface is firstly contacted with the bump, the front end inclined surface 103 slides to buffer the impact force of the bump, meanwhile, the cross beam is slowly jacked up, then the bump is contacted with the rear end inclined surface 104 and gradually separated, the cross beam slowly drops until the vehicle drops to a normal state, and finally the vehicle smoothly passes through the ground bump;

when the vehicle backs a car and passes through the ground lug, the rear end inclined plane 104 of the convex surface is firstly contacted with the lug, the impact force of the lug is buffered through the sliding of the inclined plane, meanwhile, the cross beam is slowly jacked up, then the lug is contacted with the front end inclined plane 103 and gradually separated, the cross beam slowly drops until the vehicle drops to a normal state, and finally the vehicle smoothly passes through the ground lug.

The embodiment of the utility model also provides an automobile, which comprises the auxiliary frame in any embodiment. The manufactured auxiliary frame is installed on a real vehicle for comparison and verification, so that the auxiliary frame has high lifting amplitude for noise reduction and lifting operation stability, and the weight and cost increase are small, and the auxiliary frame is beneficial to mass production feasibility of products and customer satisfaction.

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, its characterized in that includes front beam, first front longitudinal beam, second front longitudinal beam, first front body installing support, second front body installing support, first front longitudinal beam and second front swing arm front end installing support down, the front beam transversely extends to the second end by first end, first front body installing support set up in the first end of front beam, second front body installing support set up in the second end of front beam, first front longitudinal beam connect in the front beam with between the first swing arm front end installing support, the second front longitudinal beam connect in the front beam with between the second swing arm front end installing support down, first front longitudinal beam and second front longitudinal beam are the mirror image each other, the front beam adopts aluminum alloy extrusion, the rear side of front beam be equipped with through extrusion formation first turn-ups, first front longitudinal beam with second front overlap joint in first turn-ups and with the front beam, first front swing arm front end installing support down the second front end adopt the first swing arm front end and second swing arm front end installing support down the first side of second swing arm front longitudinal beam with the second swing arm front end and the first swing arm front end of swing arm front end installing support down the first swing arm front-end of swing arm front-side of swing arm front-end installing support and the second front side of swing arm front-end installing support down, the first front longitudinal beam and second front side swing arm front-end and the second swing arm front-end installing support down the front-end of swing arm front-end installing support down vice.

2. The subframe of claim 1 wherein said first and second front side members are extruded from an aluminum alloy, and wherein said first and second front side members have a rectangular cross-section with a width greater than a height.

3. The subframe of claim 2 wherein said first flange includes a first upturn and a first downturn, said first upturn and first downturn defining a first channel space therebetween overlapping said first front side rail and said second front side rail.

4. The subframe of claim 2 wherein said second flange includes a second upper flange and a second lower flange, said second upper flange and second lower flange defining a second channel space therebetween overlapping said first front side rail and second front side rail.

5. The subframe according to claim 1, wherein a support plane is provided on the rear side of the front cross member, and the support plane is connected to end surfaces of the first front side member and the second front side member by a weld.

6. The subframe of claim 1 wherein said first and second front body mounting brackets are formed from an aluminum alloy extrusion, said first front body mounting bracket being connected to a first end of said front cross member by a weld, said second front body mounting bracket being connected to a second end of said front cross member by a weld.

7. The subframe of claim 6 wherein said first and second front body mounting brackets are internally provided with a plurality of first reinforcing ribs, said first front body mounting brackets being internally divided by said first reinforcing ribs to form a plurality of triangular cavities, said second front body mounting brackets being internally divided by said first reinforcing ribs to form a plurality of triangular cavities.

8. The subframe of claim 7 wherein said first and second front body mounting brackets are provided with front suspension mounting slots, said first and second front body mounting brackets being provided with second reinforcing ribs outboard of said front suspension mounting slots.

9. The subframe of claim 1 wherein the bottom of the front cross member is provided with a convex surface having a front end bevel and a rear end bevel, the front and rear end bevels forming a V-shaped cross-section at the bottom of the front cross member.

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