CN213921213U

CN213921213U - Sub vehicle frame assembly and vehicle that has it

Info

Publication number: CN213921213U
Application number: CN202022812872.1U
Authority: CN
Inventors: 陈石金; 林波; 何鹏; 李启想
Original assignee: BYD Co Ltd; Huizhou BYD Battery Co Ltd
Current assignee: BYD Co Ltd; Huizhou BYD Battery Co Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-08-10
Anticipated expiration: 2030-11-27

Abstract

The utility model discloses a sub vehicle frame assembly and vehicle that has it, sub vehicle frame assembly includes: the auxiliary frame comprises a first cross beam, a second cross beam and two longitudinal beams, the second cross beam is arranged behind the first cross beam, grooves are formed in the second cross beam, the two longitudinal beams are arranged at intervals from left to right, the front end of each longitudinal beam is connected with the first cross beam, and the rear end of each longitudinal beam is connected with the second cross beam; a suspension bracket, at least a portion of the suspension bracket being disposed within the recess, and the suspension bracket being fixed with the second beam. According to the utility model discloses a sub vehicle frame assembly, the suspended support can be great with the connection size of second crossbeam, avoids producing stress concentration, can effectively improve the fatigue durability of suspended support to can guarantee the stable output of engine power. Moreover, the connection firmness between the suspension bracket and the second beam can be improved, and the suspension bracket is prevented from deforming.

Description

Sub vehicle frame assembly and vehicle that has it

Technical Field

The utility model belongs to the technical field of the vehicle technique and specifically relates to a sub vehicle frame assembly and vehicle that has it are related to.

Background

In the related art, the rear suspension bracket of the vehicle is less firmly connected with the rear cross beam, and is easy to deform. Further, stress concentration is easily generated at a portion of the rear suspension bracket connected to the rear cross member, and fatigue durability of the rear suspension bracket is reduced, thereby possibly affecting stable output of engine power.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an auxiliary frame assembly, auxiliary frame assembly's suspension support has higher firm nature of being connected with the second crossbeam, is difficult for producing the deformation, and the suspension support has higher fatigue durability.

Another object of the present invention is to provide a vehicle having the above subframe assembly.

According to the utility model discloses sub vehicle frame assembly of first aspect embodiment includes: the auxiliary frame comprises a first cross beam, a second cross beam and two longitudinal beams, the second cross beam is arranged behind the first cross beam, grooves are formed in the second cross beam, the two longitudinal beams are arranged at intervals from left to right, the front end of each longitudinal beam is connected with the first cross beam, and the rear end of each longitudinal beam is connected with the second cross beam; a suspension bracket, at least a portion of the suspension bracket being disposed within the recess, and the suspension bracket being fixed with the second beam.

According to the utility model discloses sub vehicle frame assembly is through being formed with the recess on making the second crossbeam to make at least some of suspension support establish in the recess and suspension support and second crossbeam are fixed, suspension support can be great with the connection size of second crossbeam, avoids producing stress concentration, can effectively improve suspension support's fatigue durability ability, thereby can guarantee the stable output of engine power. Moreover, the arrangement can improve the connection firmness between the suspension bracket and the second beam and avoid the deformation of the suspension bracket.

According to some embodiments of the invention, the whole outer peripheral edge of the groove with the suspension bracket welded connection is in order to realize the suspension bracket with the fixing of second crossbeam.

According to some embodiments of the invention, the groove penetrates through an upper surface and a lower surface of the second beam, and a height of the suspension bracket in the up-down direction is greater than a width of the groove in the up-down direction; or the height of the suspension bracket in the vertical direction is equal to the width of the groove in the vertical direction.

According to some embodiments of the invention, at least a portion of the outer periphery of the suspension bracket is provided with a flange.

According to some embodiments of the invention, the suspension bracket comprises: the two first bracket parts are arranged at intervals; a second bracket portion connected between one end of the two first bracket portions adjacent to the second cross beam, the one end of the two first bracket portions and the second bracket portion being located in the groove.

According to some embodiments of the invention, the first frame parts are provided with bosses on surfaces thereof facing each other.

According to some embodiments of the invention, the second bracket part is formed with at least one lightening hole.

According to some embodiments of the present invention, the subframe assembly further comprises: and the reinforcing piece is fixed in the second cross beam, and the part of the suspension bracket, which is positioned in the groove, is fixed with the reinforcing piece.

According to some embodiments of the invention, the recess is open on the side facing the first beam, the suspension support being fixed on the front side of the second beam.

According to the utility model discloses vehicle of second aspect embodiment, include according to the utility model discloses above-mentioned first aspect embodiment's sub vehicle frame assembly.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a subframe assembly according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a second cross beam and suspension bracket according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a second cross member according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a second cross beam and a suspension bracket according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a reinforcing member according to an embodiment of the present invention.

Reference numerals:

100: a subframe assembly;

1: an auxiliary frame; 11: a first cross member; 12: a second cross member;

121: a groove; 122: a sub-section; 123: a first plug weld hole;

124: a second plug weld hole; 13: a stringer; 2: a suspension bracket;

21: flanging; 22: a first frame part; 221: a boss;

23: a second bracket part; 231: lightening holes; 3: a reinforcement.

Detailed Description

Embodiments of the present invention are described in detail below, and the embodiments described with reference to the drawings are exemplary.

A subframe assembly 100 according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 5.

As shown in fig. 1, the subframe assembly 100 according to the embodiment of the present invention includes a subframe 1 and a suspension bracket 2.

The auxiliary frame 1 comprises a first cross beam 11, a second cross beam 12 and two longitudinal beams 13, wherein the second cross beam 12 is arranged behind the first cross beam 11, grooves 121 are formed in the second cross beam 12, the two longitudinal beams 13 are arranged at left and right intervals, the front end of each longitudinal beam 13 is connected with the first cross beam 11, and the rear end of each longitudinal beam 13 is connected with the second cross beam 12. Here, it should be noted that the direction "rear" is understood to be a direction toward the rear of the vehicle, and the opposite direction is defined as "front", i.e., a direction toward the front of the vehicle.

For example, in the example of fig. 1, the subframe 1 is formed in a frame-shaped structure. Therefore, the auxiliary frame 1 can weaken the impact of road vibration on the vehicle body and improve the comfort and stability of the vehicle. Moreover, because the in-process of traveling at the vehicle, vehicle suspension can lead to the fact the impact to the automobile body, and the automobile body can bring various deformations because of the atress inequality, and the sub vehicle frame 1 that so sets up can replace the automobile body to bear the frame deformation condition such as load bending, non-horizontal wrench movement, transverse bending and horizontal rhombus wrench movement, promotes automobile body torsional resistance, can direct atress when the emergence is collided, improves whole car collision security performance. In addition, the subframe 1 can reduce noise caused by vibration of an engine and a road surface, and improve the mute level in the cabin.

As shown in fig. 2 and 3, at least a portion of the suspension bracket 2 is disposed in the groove 121, and the suspension bracket 2 is fixed with the second beam 12. From this, at least a part of suspension support 2 can inlay and establish in recess 121, compares with current back suspension support, can reduce the size of the unsettled part of suspension support 2, strengthens the lateral rigidity of suspension support 2 to can provide sufficient installation rigidity and installation intensity for engine suspension system. In addition, the connecting size of the suspension bracket 2 and the second beam 12 can be larger, so that the stress of the suspension bracket 2 can be more uniform, the stress concentration is avoided, the fatigue durability of the suspension bracket 2 can be effectively improved, and the stable output of the power of the engine can be ensured. In addition, by the arrangement, the connection firmness between the suspension bracket 2 and the second cross beam 12 can be improved, and the suspension bracket 2 is prevented from deforming. In addition, since at least a part of the suspension bracket 2 is disposed in the groove 121, the occupied space of the suspension bracket 2 can be reduced, and the arrangement is convenient.

According to the utility model discloses sub vehicle frame assembly 100 is through making being formed with recess 121 on the second crossbeam 12 to make at least some of suspension support 2 establish in recess 121 and suspension support 2 fixed with second crossbeam 12, suspension support 2 can be great with the connection size of second crossbeam 12, avoids producing stress concentration, can effectively improve the fatigue durability of suspension support 2, thereby can guarantee the stable output of engine power. Moreover, by the arrangement, the connection firmness between the suspension bracket 2 and the second cross beam 12 can be improved, and the suspension bracket 2 is prevented from deforming.

In some embodiments of the present invention, referring to fig. 2 and 3, the entire outer periphery of the groove 121 is welded to the suspension bracket 2 to fix the suspension bracket 2 to the second beam 12. Therefore, the size of the outer periphery of the groove 121 is large, so that the welding size between the suspension bracket 2 and the second cross beam 12 can be increased, the connection strength between the suspension bracket 2 and the second cross beam 12 can be improved, and the mode and the fatigue durability of the suspension bracket 2 are improved. Moreover, because the shape of the whole outer periphery of the groove 121 is regular and flat relatively, the quality of the welding seam between the suspension bracket 2 and the outer periphery of the groove 121 can be ensured, the welding difficulty is reduced, and the stress of the suspension bracket 2 can be more uniform, so that the risk of stress concentration of the welding seam can be further reduced. For example, the entire outer circumference of the groove 121 and the suspension bracket 2 may be arc-welded. But is not limited thereto.

In some optional embodiments of the present invention, referring to fig. 2 and 3, the groove 121 runs through the upper surface and the lower surface of the second beam 12, and the height of the suspension bracket 2 in the up-down direction is greater than the width of the groove 121 in the up-down direction. For example, it may be that the lower end of the suspension bracket 2 is flush with the lower surface of the second beam 12, and the upper end of the suspension bracket 2 extends beyond the upper surface of the second beam 12; or the upper end of the suspension bracket 2 is flush with the upper surface of the second beam 12, and the lower end of the suspension bracket 2 extends to exceed the lower surface of the second beam 12; of course, it is also possible that the upper end of the suspension bracket 2 extends beyond the upper surface of the second beam 12 and the lower end of the suspension bracket 2 extends beyond the lower surface of the second beam 12. Thus, by making the height of the suspension bracket 2 greater than the width of the groove 121, the size of the connection between the suspension bracket 2 and the second cross member 12 can be increased, thereby making the connection between the suspension bracket 2 and the second cross member 12 more secure. Moreover, the arrangement can reduce the installation difficulty between the suspension bracket 2 and the second cross beam 12, and the operation is more convenient.

Of course, the present invention is not limited thereto, and the height of the suspension bracket 2 in the up-down direction and the width of the groove 121 in the up-down direction may be equal. In this way, a larger connecting dimension between the suspension bracket 2 and the second cross beam 12 can be ensured, and the connection firmness between the suspension bracket 2 and the second cross beam 12 can be improved. Moreover, the suspension bracket 2 thus provided occupies a small space in the vertical direction, so that the size of the entire subframe assembly 100 in the vertical direction can be reduced, and the space can be saved.

Optionally, as shown in fig. 2, at least a portion of the outer circumference of the suspension bracket 2 is provided with a flange 21. For example, in the example of fig. 2, a portion of the outer periphery of the suspension holder 2 outside the groove 121 is provided with a flange 21, and the flange 21 extends in a direction away from the center of the suspension holder 2. Therefore, by arranging the turned-over edge 21, the bending deformation of the suspension bracket 2 caused by bearing load can be avoided, so that the structural strength and the structural stability of the suspension bracket 2 are effectively improved, and the suspension bracket 2 can provide enough installation rigidity and installation strength for an engine suspension system.

In some embodiments of the present invention, referring to fig. 2-4, the suspension bracket 2 comprises a second bracket portion 23 and two first bracket portions 22. Specifically, two first bracket portions 22 are provided at a distance, a second bracket portion 23 is connected between one ends of the two first bracket portions 22 adjacent to the second cross member 12, and the one ends of the two first bracket portions 22 and the second bracket portion 23 are located in the grooves 121.

It should be noted that "the one ends of the two first bracket parts 22 and the second bracket part 23 are located in the groove 121" may be understood as meaning that the one ends of the two first bracket parts 22 and the second bracket part 23 are located within the range of the groove 121 in the front-rear direction. The one end of the two first frame portions 22 and the second frame may extend beyond the groove 121 in the vertical direction.

For example, in the example of fig. 2 to 4, the second leg portion 23 extends in the up-down direction, and the second leg portion 23 is connected to the rear edge of the groove 121. Two first bracket parts 22 are respectively connected to left and right sides of the second bracket part 23 and are opposite to each other, the two first bracket parts 22 are perpendicular to the second bracket part 23, each first bracket part 22 extends in the front-rear direction, and one ends of the two first bracket parts 22 adjacent to the second cross member 12 are respectively connected to left and right edges of the groove 121. Therefore, the suspension bracket 2 is simple in structure, convenient to process and low in cost by arranging the second bracket part 23 and the two first bracket parts 22. Moreover, since the one ends of the two first bracket parts 22 and the second bracket part 23 are located in the groove 121, the one ends of the two first bracket parts 22 and the entire second bracket part 23 may be connected to the outer periphery of the groove 121, so that the connection strength between the suspension bracket 2 and the second cross member 12 may be further improved.

Alternatively, referring to fig. 2 to 4, bosses 221 are provided on surfaces of the two first frame parts 22 facing each other. Thus, since the two first bracket portions 22 are usually connected to the engine suspension system, the local rigidity of the two first bracket portions 22 can be enhanced by the arrangement of the bosses 221, so that the two first bracket portions 22 have higher installation rigidity and installation strength, and the structure of the whole suspension bracket 2 is more stable and reliable.

Optionally, in conjunction with fig. 2, the second bracket part 23 is formed with at least one lightening hole 231. For example, one lightening hole 231 is shown in the example of fig. 2, and the lightening hole 231 penetrates the second bracket part 23 in the thickness direction of the second bracket part 23. Thus, by providing the lightening hole 231, the weight of the entire suspension bracket 2 can be reduced, and the suspension bracket 2 can be lightened. Moreover, since the lightening holes 231 are provided on the second bracket part 23 and the second bracket part 23 is located in the recess 121, the structural strength of the suspension bracket 2 can be prevented from being affected while lightening.

One lightening hole 231 is shown in fig. 2 for illustrative purposes, but it is obvious to those skilled in the art after reading the technical solution of the present application that the solution can be applied to other numbers of lightening holes 231, which also falls within the protection scope of the present invention.

In a further embodiment of the present invention, as shown in fig. 3 and 5, the subframe assembly 100 further includes a reinforcement 3, the reinforcement 3 is fixed in the second cross member 12, and the portion of the suspension bracket 2 located in the groove 121 is fixed to the reinforcement 3. For example, in the example of fig. 3 and 5, the second cross member 12 includes two sub portions 122 that are engaged with each other in the up-down direction, a receiving space is defined between the two sub portions 122, and the reinforcing member 3 is located in the receiving space. The upper end of the reinforcing member 3 may be welded to one of the two sub-portions 122 through the first plug welding hole 123, the lower end of the reinforcing member 3 may be welded to the other of the two sub-portions 122 through the second plug welding hole 124, and the second bracket portion 23 is welded to the reinforcing member 3. Therefore, by arranging the reinforcing part 3, the suspension bracket 2 can be connected with the reinforcing part 3, the integrity of the suspension bracket 2, the second cross beam 12 and the reinforcing part 3 is improved, the connection rigidity between the suspension bracket 2 and the second cross beam 12 is further enhanced, and the connection between the suspension bracket 2 and the second cross beam 12 can be firmer.

In some embodiments of the present invention, referring to fig. 2 in combination with fig. 1, the side of the groove 121 facing the first beam 11 is open, and the suspension bracket 2 is fixed at the front side of the second beam 12. For example, in the example of fig. 1 and 2, the groove 121 is formed in a U-shape, and a portion of the suspension bracket 2 is provided in the groove 121 and is adapted to the shape of the groove 121. From this, through making recess 121 open towards one side of first crossbeam 11, during the installation, suspension support 2 can stretch into recess 121 from the open side of recess 121 in fixed with second crossbeam 12 to it is more convenient to make suspension support 2's installation, can effectively improve machining efficiency.

According to a second aspect of the present invention, a vehicle (not shown) includes the subframe assembly 100 according to the first aspect of the present invention.

According to the utility model discloses vehicle, through setting up foretell sub vehicle frame assembly 100, suspension support 2 can be great with the connection size of second crossbeam 12, avoids producing stress concentration, can effectively improve suspension support 2's fatigue durability, guarantees the stable output of engine power, and can improve the firm nature of being connected between suspension support 2 and the second crossbeam 12, avoids suspension support 2 to produce and warp to the performance that makes whole car is more excellent.

Other configurations and operations of vehicles according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A subframe assembly, comprising:

the auxiliary frame comprises a first cross beam, a second cross beam and two longitudinal beams, the second cross beam is arranged behind the first cross beam, grooves are formed in the second cross beam, the two longitudinal beams are arranged at intervals from left to right, the front end of each longitudinal beam is connected with the first cross beam, and the rear end of each longitudinal beam is connected with the second cross beam;

a suspension bracket, at least a portion of the suspension bracket being disposed within the recess, and the suspension bracket being fixed with the second beam.

2. The subframe assembly of claim 1 wherein the entire periphery of said recess is welded to said suspension bracket to secure said suspension bracket to said second cross member.

3. The subframe assembly of claim 1 wherein said recess extends through an upper surface and a lower surface of said second cross member,

the height of the suspension bracket in the vertical direction is larger than the width of the groove in the vertical direction; or

The height of the suspension bracket in the vertical direction is equal to the width of the groove in the vertical direction.

4. The subframe assembly of claim 1 wherein at least a portion of an outer perimeter of said suspension bracket is flanged.

5. The subframe assembly of claim 1 wherein said suspension bracket comprises:

the two first bracket parts are arranged at intervals;

a second bracket portion connected between one end of the two first bracket portions adjacent to the second cross beam, the one end of the two first bracket portions and the second bracket portion being located in the groove.

6. The subframe assembly of claim 5 wherein said first frame portions have bosses on opposite surfaces thereof.

7. The subframe assembly of claim 5 wherein said second bracket portion has at least one lightening hole formed therein.

8. The subframe assembly of any one of claims 1-7 further comprising:

and the reinforcing piece is fixed in the second cross beam, and the part of the suspension bracket, which is positioned in the groove, is fixed with the reinforcing piece.

9. The subframe assembly of any one of claims 1-7 wherein said recess is open on a side facing said first cross member and said suspension bracket is secured to a front side of said second cross member.

10. A vehicle comprising the subframe assembly of any one of claims 1-9.