Auxiliary frame of pure electric vehicle

Abstract

The utility model provides an auxiliary frame of a pure electric vehicle, which comprises a front cross beam, a first rear cross beam, a first longitudinal beam and a second longitudinal beam, one end part of the first longitudinal beam and one end part of the second longitudinal beam are respectively connected with two end parts of the front cross beam through a first connecting bracket; the other end part of the first longitudinal beam and the other end part of the second longitudinal beam are respectively connected with the two end parts of the first rear cross beam through a second connecting bracket to form a frame structure; the front cross beam, the first rear cross beam, the first longitudinal beam and the second longitudinal beam are all square tube beams, and the section of each square tube beam is rectangular. The utility model has the advantages of simple structure, less welding pass sequence, less welding thermal deformation, high dimensional accuracy and simple and convenient process. According to the auxiliary frame of the pure electric vehicle, the overall performance and the overall material utilization rate of the auxiliary frame can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicles, in particular to a subframe of a pure electric vehicle. Background Art

[0002] In the automotive industry, with increasing demands for environmental protection, pure electric vehicles are becoming the mainstream of the market. Among them, the subframe, as a key component of the vehicle chassis and axles, is responsible for eliminating noise and vibration transmitted from the wheel end.

[0003] Figure 1 It is a three-dimensional diagram of a subframe in the prior art.

[0004] Figure 2 It is a top view of the auxiliary frame in the prior art.

[0005] like Figure 1 and Figure 2 As shown, the cross beams (front cross beam 100 and rear cross beam 200 ) and longitudinal beam 300 of the existing subframe are assembled by welding upper and lower large pieces together, resulting in poor bending and torsional resistance of the subframe as a whole.

[0006] At the same time, there are many welding sequences, the welds are too long, the thermal deformation during welding is large, the size is difficult to control, the process is difficult, and the material utilization rate of the existing subframe is low.

[0007] In view of this, the inventor of the present application has designed a subframe of a pure electric vehicle in order to overcome the above technical problems. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the defects of the prior art such as multiple welding sequences, excessively long welding time, large thermal deformation during welding, etc. of the auxiliary frame, and provide an auxiliary frame for a pure electric vehicle.

[0009] The utility model solves the above technical problems through the following technical solutions:

[0010] A subframe for a pure electric vehicle, characterized in that the subframe comprises a front crossbeam, a first rear crossbeam, a first longitudinal beam, and a second longitudinal beam, wherein one end of the first longitudinal beam and one end of the second longitudinal beam are respectively connected to two ends of the front crossbeam via a first connecting bracket, and the other end of the first longitudinal beam and the other end of the second longitudinal beam are respectively connected to two ends of the first rear crossbeam via a second connecting bracket, thereby forming a frame structure;

[0011] The front cross beam, the first rear cross beam, the first longitudinal beam and the second longitudinal beam are all square tube beams, and the cross section of the square tube beam is rectangular.

[0012] According to one embodiment of the present invention, the pure electric vehicle subframe includes a second rear crossbeam, the two ends of the second rear crossbeam are respectively connected to the first longitudinal beam and the second longitudinal beam, and the second rear crossbeam is located between the first rear crossbeam and the front crossbeam.

[0013] According to an embodiment of the present invention, the first rear cross beam, the second rear cross beam, the first longitudinal beam and the second longitudinal beam all adopt a square tube beam structure.

[0014] According to one embodiment of the present invention, the second rear cross beam is close to the first rear cross beam.

[0015] According to one embodiment of the present invention, the pure electric vehicle subframe further includes a first reinforcing beam and a second reinforcing beam, wherein the first reinforcing beam is connected between the first longitudinal beam and the second rear cross beam, and the second reinforcing beam is connected between the second longitudinal beam and the second rear cross beam.

[0016] According to one embodiment of the present invention, one end of the first connecting bracket is set as a first connecting part, the end of the front cross beam is connected to the first connecting part, the other end of the first connecting bracket is set as a second connecting part, and the first longitudinal beam and the second longitudinal beam are connected to the second connecting part.

[0017] According to an embodiment of the present invention, the first connecting portion and the second connecting portion are perpendicular to each other.

[0018] According to one embodiment of the present invention, one end of the second connecting bracket is set as a third connecting part, the end of the first rear cross beam is connected to the third connecting part, and the other end of the second connecting bracket is set as a fourth connecting part, and the first longitudinal beam and the second longitudinal beam are connected to the fourth connecting part.

[0019] According to an embodiment of the present invention, the third connecting portion and the fourth connecting portion are perpendicular to each other.

[0020] According to an embodiment of the present invention, the first connecting bracket and the second connecting bracket are hollow frame structures.

[0021] The positive progress effect of this utility model is:

[0022] The utility model discloses a sub-frame for a pure electric vehicle, which has a simple structure, fewer welding sequences, less welding thermal deformation, high dimensional accuracy and simple process.

[0023] The pure electric vehicle subframe can effectively improve the overall performance and overall material utilization of the subframe. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which the same reference numerals represent the same features throughout, wherein:

[0025] Figure 1 It is a three-dimensional diagram of a subframe in the prior art.

[0026] Figure 2 It is a top view of the auxiliary frame in the prior art.

[0027] Figure 3 It is a three-dimensional diagram of the auxiliary frame of the pure electric vehicle of the present utility model.

[0028] Figure 4 This is a top view of the auxiliary frame of the pure electric vehicle of the present utility model.

[0029] Figure 5 It is a structural schematic diagram of the first longitudinal beam, the second longitudinal beam, the first rear cross beam and the second rear cross beam in the auxiliary frame of the pure electric vehicle of the present utility model.

[0030] Figure 6 for Figure 5 Cross-sectional view taken along line AA.

[0031] Figure 7 This is a structural diagram of the first connecting bracket in the auxiliary frame of the pure electric vehicle of the present invention.

[0032] Figure 8 This is a schematic diagram of the structure of the second connecting bracket in the auxiliary frame of the pure electric vehicle of the utility model. Figure 1 .

[0033] Figure 9 This is a schematic diagram of the structure of the second connecting bracket in the auxiliary frame of the pure electric vehicle of the utility model. Figure 2 .

[0034] Reference numerals

[0035] Front crossbeam 10, 100

[0036] Rear crossbeam 200

[0037] Stringer 300

[0038] First rear cross member 20

[0039] First longitudinal beam 30

[0040] Second longitudinal beam 40

[0041] First connecting bracket 50

[0042] Second connecting bracket 60

[0043] Second rear cross member 70

[0044] First reinforcement beam 80

[0045] Second reinforcement beam 81

[0046] First connecting portion 51

[0047] Second connecting portion 52

[0048] The third connecting portion 61

[0049] Fourth connecting portion 62 DETAILED DESCRIPTION

[0050] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0051] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0052] In addition, although the terms used in the present invention are selected from well-known and commonly used terms, some terms mentioned in the specification of the present invention may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article.

[0053] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings connoted by each term.

[0054] like Figures 3 to 9 As shown, the present invention discloses a subframe for a pure electric vehicle, comprising a front crossbeam 10, a first rear crossbeam 20, a first longitudinal beam 30, and a second longitudinal beam 40. One end of the first longitudinal beam 30 and one end of the second longitudinal beam 40 are connected to the ends of the front crossbeam 10 via a first connecting bracket 50, respectively. The other ends of the first longitudinal beam 30 and the other ends of the second longitudinal beam 40 are connected to the ends of the first rear crossbeam 20 via a second connecting bracket 60, respectively, to form a frame structure. The front crossbeam 10, the first rear crossbeam 20, the first longitudinal beam 30, and the second longitudinal beam 40 are all square tubular beams, each having a rectangular cross-section.

[0055] Preferably, the pure electric vehicle subframe further includes a second rear crossbeam 70 , the two ends of which are respectively connected to the first longitudinal beam 30 and the second longitudinal beam 40 , and the second rear crossbeam 70 is located between the first rear crossbeam 20 and the front crossbeam 10 .

[0056] Here, the first rear cross beam 20 , the second rear cross beam 70 , the first longitudinal beam 30 and the second longitudinal beam 40 are preferably all of a square tube beam structure.

[0057] Further preferably, the pure electric vehicle subframe further includes a first reinforcing beam 80 and a second reinforcing beam 81 , wherein the first reinforcing beam 80 is connected between the first longitudinal beam 30 and the second rear cross beam 70 , and the second reinforcing beam 81 is connected between the second longitudinal beam 40 and the second rear cross beam 70 .

[0058] One end of the first connecting bracket 50 is provided as a first connecting portion 51, connecting the end of the front cross beam 10 to the first connecting portion 51. The other end of the first connecting bracket 50 is provided as a second connecting portion 52, connecting the first longitudinal beam 30 and the second longitudinal beam 40 to the second connecting portion 52.

[0059] Preferably, the first connecting portion 51 and the second connecting portion 52 are perpendicular to each other.

[0060] Similarly, one end of the second connecting bracket 60 is set as the third connecting part 61, connecting the end of the first rear cross beam 20 to the third connecting part 61, and the other end of the second connecting bracket 60 is set as the fourth connecting part 62, connecting the first longitudinal beam 30 and the second longitudinal beam 40 to the fourth connecting part 62.

[0061] Preferably, the third connecting portion and the fourth connecting portion are perpendicular to each other.

[0062] Here, the first connecting bracket 50 and the second connecting bracket 60 are preferably hollow frame structures.

[0063] According to the above structural description, the subframe of the pure electric vehicle of the present invention is mainly composed of five square tube beams. The cross beams and longitudinal beams both adopt square tube beam structures, which reduces the welding sequence required for the original upper and lower piece buckling structure, reduces the weld length, and has a rectangular cross-section.

[0064] The first and second longitudinal beams are constructed from the same tubular beam specifications, requiring only one set of square tubular beam forming molds. This simplifies the structure and reduces manufacturing costs. The front crossbeam and longitudinal beams are welded together via a first connecting bracket. The first rear crossbeam is directly welded to the longitudinal beams, and the second connecting bracket welds the first rear crossbeam and longitudinal beams together, forming a solid frame with excellent structural performance.

[0065] The subframe has a simple overall structure, with crossbeams and longitudinal beams adopting a square tube beam structure. This can reduce the weight of the subframe while ensuring strength, thereby meeting the lightweight requirements of the entire vehicle. The added square tube second rear crossbeam provides effective Y-axis support for the subframe, greatly improving the overall performance of the subframe.

[0066] At the same time, square tube forming reduces the welding requirements of the subframe, reduces the number of welding passes, and simplifies the process. In addition, this type of subframe has a high material utilization rate, reduces waste generation, and reduces production costs.

[0067] Therefore, the pure electric vehicle subframe of the present invention can improve the bending and torsional resistance of the subframe, while simplifying the process difficulty and improving the material utilization rate.

[0068] In summary, the subframe of the pure electric vehicle of the present invention has a simple structure, fewer welding sequences, less welding thermal deformation, high dimensional accuracy, and simple process.

[0069] The pure electric vehicle subframe can effectively improve the overall performance and overall material utilization of the subframe.

[0070] For those skilled in the art, the above utility model disclosure is intended only as an example and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0071] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0072] Similarly, it should be noted that, in order to simplify the description of the present disclosure and thus facilitate understanding of one or more utility model embodiments, the foregoing descriptions of the present disclosure embodiments sometimes combine multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not mean that the subject matter of the present disclosure requires more features than those mentioned in the claims. In fact, the features of an embodiment may be fewer than the total features of a single disclosed embodiment.

[0073] Although specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications shall fall within the scope of protection of the present invention.

Claims

1. A subframe of a pure electric vehicle, characterized in that: The pure electric vehicle subframe includes a front crossbeam, a first rear crossbeam, a first longitudinal beam, and a second longitudinal beam, wherein one end of the first longitudinal beam and one end of the second longitudinal beam are respectively connected to two ends of the front crossbeam via a first connecting bracket, and the other end of the first longitudinal beam and the other end of the second longitudinal beam are respectively connected to two ends of the first rear crossbeam via a second connecting bracket to form a frame structure; The front cross beam, the first rear cross beam, the first longitudinal beam and the second longitudinal beam are all square tube beams, and the cross section of the square tube beam is rectangular.

2. The pure electric vehicle subframe according to claim 1, characterized in that: The pure electric vehicle subframe includes a second rear cross beam, both ends of which are respectively connected to the first longitudinal beam and the second longitudinal beam, and the second rear cross beam is located between the first rear cross beam and the front cross beam.

3. The pure electric vehicle subframe according to claim 2, characterized in that: The first rear cross beam, the second rear cross beam, the first longitudinal beam and the second longitudinal beam all adopt a square tube beam structure.

4. The pure electric vehicle subframe according to claim 2, characterized in that: The second rear cross beam is close to the first rear cross beam.

5. The pure electric vehicle subframe according to claim 2, characterized in that: The pure electric vehicle subframe further includes a first reinforcement beam and a second reinforcement beam, wherein the first reinforcement beam is connected between the first longitudinal beam and the second rear cross beam, and the second reinforcement beam is connected between the second longitudinal beam and the second rear cross beam.

6. The pure electric vehicle subframe according to claim 1, characterized in that: One end of the first connecting bracket is set as a first connecting part, the end of the front cross beam is connected to the first connecting part, the other end of the first connecting bracket is set as a second connecting part, the first longitudinal beam and the second longitudinal beam are connected to the second connecting part.

7. The pure electric vehicle subframe according to claim 6, characterized in that: The first connecting portion and the second connecting portion are perpendicular to each other.

8. The pure electric vehicle subframe according to claim 1, characterized in that: One end of the second connecting bracket is set as a third connecting part, the end of the first rear cross beam is connected to the third connecting part, and the other end of the second connecting bracket is set as a fourth connecting part, the first longitudinal beam and the second longitudinal beam are connected to the fourth connecting part.

9. The pure electric vehicle subframe according to claim 8, characterized in that: The third connecting portion and the fourth connecting portion are perpendicular to each other.

10. The pure electric vehicle subframe according to claim 1, characterized in that: The first connecting bracket and the second connecting bracket are hollow frame structures.

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