Automobile auxiliary frame and automobile comprising same

Abstract

The utility model provides an automobile auxiliary frame and an automobile comprising the same, the automobile auxiliary frame comprises a rear cross beam and a middle cross beam, the rear cross beam and the middle cross beam are arranged at intervals, at least one supporting structure is installed between the rear cross beam and the middle cross beam, one end of the supporting structure is fixedly connected with the rear cross beam, and the other end of the supporting structure is fixedly connected with the middle cross beam. And the other end part is fixedly connected with the middle cross beam. According to the utility model, the relative deformation of the rear cross beam and the middle cross beam at the frequency band of 150Hz can be obviously improved, so that the rigidity of a rear suspension mounting point at the frequency band is improved. Through analysis, the dynamic stiffness performance of the rear suspension mounting point in the frequency band of 50-200Hz is improved by 20%.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to an automobile auxiliary frame and an automobile comprising the auxiliary frame. Background Art

[0002] In the prior art, the vehicle subframe is an important assembly structure in the chassis system, and its dynamic stiffness performance is of great significance for improving the NVH performance of the vehicle.

[0003] During the development and design of the subframe structure, the dynamic stiffness of the subframe should be strictly controlled and optimized to ensure that it can meet the vehicle's ride comfort requirements.

[0004] At present, during the design process of the vehicle subframe, the dynamic stiffness of the powertrain rear suspension point of the frame usually fails to meet its performance requirements.

[0005] Therefore, in order to ensure the dynamic stiffness performance of the rear suspension point of the subframe, it is necessary to modify the structure of the subframe to ensure that its dynamic stiffness performance meets the target requirements.

[0006] Figure 1 It is a structural schematic diagram of a subframe in the prior art. Figure 2 Schematic diagram of the connection position between the rear suspension of the subframe and the rear crossbeam and the middle crossbeam.

[0007] like Figure 1 and Figure 2 As shown, the dynamic stiffness performance of the subframe rear suspension mounting point in the prior art in the 50-200 Hz frequency band does not meet the performance requirements. The rear suspension mounting bracket is connected to the rear cross beam 10 and the middle cross beam 20 by four bolts 30 .

[0008] The relative deformation of the existing subframe rear crossbeam and middle crossbeam in the 150Hz frequency band is relatively large, which affects the stiffness performance of the rear suspension mounting point in this frequency band, and further affects the dynamic stiffness performance of the rear suspension mounting point in the 50-200Hz frequency band as a whole.

[0009] In view of this, the inventor of the present application has designed an automobile subframe and an automobile comprising the same, in order to overcome the above technical problems. Utility Model Content

[0010] The technical problem to be solved by the utility model is to overcome the defect that the point dynamic stiffness performance of the rear suspension of the auxiliary frame in the prior art cannot meet the requirements, and to provide an automobile auxiliary frame and an automobile comprising the same.

[0011] The utility model solves the above technical problems through the following technical solutions:

[0012] A vehicle subframe is characterized in that the vehicle subframe comprises a rear crossbeam and a middle crossbeam, the rear crossbeam and the middle crossbeam are arranged at intervals from each other, at least one supporting structure is installed between the rear crossbeam and the middle crossbeam, one end of the supporting structure is fixedly connected to the rear crossbeam, and the other end is fixedly connected to the middle crossbeam.

[0013] According to an embodiment of the present invention, the supporting structure is a plate-shaped structure.

[0014] According to an embodiment of the present invention, the plate-like structure is a reinforcement plate.

[0015] According to an embodiment of the utility model, two supporting structures are arranged between the rear cross beam and the middle cross beam.

[0016] According to an embodiment of the present invention, the support structures are distributed symmetrically to each other.

[0017] According to an embodiment of the present invention, the thickness of the reinforcement plate is 2 mm.

[0018] According to an embodiment of the present invention, the reinforcing plate has a width of 70 mm and a length of 80 mm.

[0019] According to an embodiment of the utility model, at least one through hole is formed on the reinforcing plate.

[0020] According to an embodiment of the utility model, the support structure is fixedly connected to the rear cross beam and the middle cross beam by welding.

[0021] The utility model also discloses a car, which is characterized in that the car adopts the car auxiliary frame as described above.

[0022] The positive and progressive effects of the utility model are:

[0023] The automobile subframe of the utility model and the automobile including the same can significantly improve the relative deformation of the rear cross beam and the middle cross beam in the 150Hz frequency band, thereby improving the stiffness of the rear suspension mounting point in this frequency band. Through analysis, it is found that the dynamic stiffness performance of the rear suspension mounting point in the 50-200Hz frequency band is improved by 20%. 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 always represent the same features, wherein:

[0025] Figure 1 It is a structural schematic diagram of a subframe in the prior art.

[0026] Figure 2 Schematic diagram of the connection position between the rear suspension of the subframe and the rear crossbeam and the middle crossbeam.

[0027] Figure 3 It is a structural schematic diagram of the automobile subframe of the utility model.

[0028] Figure 4 for Figure 3 Enlarged view of part A.

[0029] [Reference Signs]

[0030] Rear beam 10, 100

[0031] Middle beam 20, 200

[0032] Bolt 30

[0033] Support structure 300

[0034] One end 310 of the support structure

[0035] The other end 320 of the support structure

[0036] Through hole 330 DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0038] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.Preferred embodiments of the present invention will now be described in detail, examples of which are shown in the accompanying drawings.Where possible, the same reference numerals will be used throughout the drawings to represent the same or similar parts.

[0039] 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.

[0040] Furthermore, it is required that the present invention be understood not only by the actual terms used but also by the meanings contained in each term.

[0041] Figure 3 It is a structural schematic diagram of the automobile subframe of the utility model. Figure 4 for Figure 3 Enlarged view of part A.

[0042] like Figure 3 and Figure 4As shown, the utility model discloses an automobile subframe, which includes a rear cross beam 100 and a middle cross beam 200, and the rear cross beam 100 and the middle cross beam 200 are arranged at intervals from each other. At least one support structure 300 is installed between the rear cross beam 100 and the middle cross beam 200, and one end 310 of the support structure 300 is fixedly connected to the rear cross beam 100, and the other end 320 is fixedly connected to the middle cross beam 200.

[0043] Preferably, the support structure 300 here can be fixedly connected to the rear cross beam 100 and the middle cross beam 200 by welding.

[0044] Preferably, the support structure 300 is configured as a plate-like structure, which may further preferably be a reinforcing plate.

[0045] As shown in this embodiment, two support structures 300 are arranged between the rear cross beam 100 and the middle cross beam 200. The support structures 300 may preferably be distributed symmetrically to each other.

[0046] Furthermore, the thickness of the reinforcing plate may preferably be 2 mm.

[0047] Furthermore, the width of the reinforcing plate may preferably be 70 mm, and the length may preferably be 80 mm.

[0048] In addition, at least one through hole 330 may be provided on the reinforcing plate for mounting components.

[0049] The utility model also discloses a car, which adopts the above-mentioned car auxiliary frame.

[0050] According to the above structural description, in order to ensure the dynamic stiffness performance of the rear suspension mounting point of the subframe, the utility model makes some supporting structures between the rear cross beam and the middle cross beam to effectively reduce deformation, improve structural stiffness, and thus improve the dynamic stiffness performance of the rear suspension mounting point in the 50-200Hz frequency band.

[0051] The improved automobile subframe is connected between the rear crossbeam and the middle crossbeam by two reinforcement plates (such as Figure 3 and Figure 4 shown).

[0052] In summary, the automobile subframe of the utility model and the automobile including the same can significantly improve the relative deformation of the rear cross beam and the middle cross beam in the 150Hz frequency band, thereby improving the stiffness of the rear suspension mounting point in this frequency band. Through analysis, it is found that the dynamic stiffness performance of the rear suspension mounting point in the 50-200Hz frequency band is improved by 20%.

[0053] For those skilled in the art, the above invention disclosure is only used as an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary implementation of the present application.

[0054] At the same time, the present application uses specific words to describe the embodiments of the present 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 the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.

[0055] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus facilitate the understanding of one or more embodiments of the invention, in the foregoing description of the embodiments of this application, multiple features are sometimes grouped into one embodiment, drawing, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those mentioned in the claims. In fact, the features of an embodiment are less than all the features of a single embodiment disclosed above.

[0056] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope 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 principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. An automobile subframe, characterized in that: The automobile subframe comprises a rear cross beam and a middle cross beam, the rear cross beam and the middle cross beam are arranged at intervals from each other, at least one supporting structure is installed between the rear cross beam and the middle cross beam, one end of the supporting structure is fixedly connected to the rear cross beam, and the other end is fixedly connected to the middle cross beam.

2. The automobile subframe according to claim 1, characterized in that: The supporting structure is a plate-shaped structure.

3. The automobile subframe according to claim 2, characterized in that: The plate-like structure is a reinforcement plate.

4. The automobile subframe according to claim 1, characterized in that: Two supporting structures are arranged between the rear cross beam and the middle cross beam.

5. The automobile subframe according to claim 4, characterized in that: The supporting structures are distributed symmetrically with respect to each other.

6. The automobile subframe according to claim 3, characterized in that: The thickness of the reinforcing plate is 2 mm.

7. The automobile subframe according to claim 3, characterized in that: The reinforcing plate has a width of 70 mm and a length of 80 mm.

8. The automobile subframe according to claim 3, characterized in that: At least one through hole is formed on the reinforcing plate.

9. The automobile subframe according to claim 1, characterized in that: The support structure is fixedly connected to the rear cross beam and the middle cross beam by welding.

10. An automobile, characterized in that: The automobile adopts the automobile subframe as described in any one of claims 1-9.

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