Rear auxiliary frame for electric automobile and automobile comprising rear auxiliary frame
By using hydraulic beam structure and optimizing the flare connecting rod bracket in the electric vehicle subframe, the problems of complex structure and numerous parts in the existing technology are solved, and the structure is streamlined, reducing welds and reducing welding difficulty is achieved.
Patent Information
- Application Number
- CN202421770513.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The subframe of the existing electric vehicle has complex structure, many parts and many welds, which makes it difficult to adjust the welding process and difficult to adjust the size.
The hydraulic beam structure is adopted, the internal reinforcement plate is cancelled, and the camber connecting rod bracket is optimized to two parts. The integrated wiring harness installation bracket is in the spring connecting rod bracket to reduce the number of parts and weld length.
The structure is streamlined, the number of parts and weld length is reduced, the difficulty of welding is reduced, and the overall stiffness and life is improved.
Smart Images
Figure CN222780471U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electric vehicles, in particular to a rear auxiliary frame for an electric vehicle and a vehicle comprising the rear auxiliary frame. Background Art
[0002] Figure 1 It is a structural schematic diagram of the original design subframe in the prior art. Figure 2 It is a structural schematic diagram of four major beams in the prior art.
[0003] like Figure 1 As shown, the existing subframe 10 is entirely made of stamped parts, and has many parts. Excluding fasteners, there are a total of 55 parts. Figure 2 As shown, since the front beam 11, the longitudinal beam 12 (left / right), and the rear beam 13 are all welded by two punching sheets, the welds are very long, with a total length of more than 22 meters.
[0004] Figure 3 The figure is a schematic diagram of the installation of the lower plate of the longitudinal beam and the inner reinforcement plate in the prior art. Figure 4 The figure is a schematic diagram of the installation of the lower plate of the front beam and the inner reinforcement plate in the prior art.
[0005] like Figure 3 and Figure 4 As shown, in order to enhance the overall rigidity, three reinforcing plates 14 are added to the longitudinal beam cavity 121, and there are six reinforcing plates on the left and right sides. Two reinforcing plates 14 are added to the front beam cavity 111. The addition of these reinforcing plates 14 not only leads to an increase in parts, but also greatly increases the number of welds, and the welding process is difficult and the size adjustment is difficult.
[0006] Figure 5 It is an assembly diagram of a subframe in the prior art. Figure 6 It is a structural schematic diagram of the camber connecting rod bracket in the prior art.
[0007] like Figure 5 and Figure 6 As shown, in the prior art, the subframe 10 is further provided with a camber link bracket 15, which includes a camber link bracket front piece 151, a camber link bracket upper reinforcement plate 152, and a camber link bracket rear piece 153. The overall structure of the camber link bracket 15 is not simple enough, and three parts are used, which has a large number of parts, poor positioning, and great welding difficulty.
[0008] Figure 7 It is a structural schematic diagram of a spring connecting rod bracket in the prior art. Figure 8 It is a schematic diagram of the installation of a spring connecting rod bracket in the prior art.
[0009] like Figure 7 and Figure 8As shown, there is a harness bracket 17 next to the spring link bracket 16, and a harness mounting hole 171 is provided on the harness bracket 17. The spring link bracket 16 is provided with a flange, which is difficult to stamp and weld. In order to install multiple brackets of the harness, the spring link bracket 16 not only increases the number of parts, but also leads to poor welding positioning and great welding difficulty.
[0010] In view of this, the inventor of the present application has designed a rear subframe for an electric vehicle and a vehicle including the same, in order to overcome the above technical problems. Utility Model Content
[0011] The technical problem to be solved by the utility model is to overcome the defects of the prior art such as the complicated structure of the auxiliary frame, numerous parts, and many welds, and to provide a rear auxiliary frame for an electric vehicle and a vehicle comprising the same.
[0012] The utility model solves the above technical problems through the following technical solutions:
[0013] A rear subframe for an electric vehicle, characterized in that the rear subframe for an electric vehicle comprises a front beam, a rear beam, a left longitudinal beam, a right longitudinal beam and an outward-inclined connecting rod bracket, the left longitudinal beam and the right longitudinal beam are respectively installed between the front beam and the rear beam and are located on both sides of the front beam and the rear beam, and the front beam, the rear beam, the left longitudinal beam and the right longitudinal beam are all hydraulic beams;
[0014] The outward-leaning connecting rod bracket includes a front plate and a rear plate, the upper edges of the front plate and the rear plate are connected to the left longitudinal beam and the right longitudinal beam, and the lower edges are extended outwards and connected to the left longitudinal beam and the right longitudinal beam.
[0015] According to an embodiment of the utility model, two ends of the rear beam wrap around the rear bushing tube.
[0016] According to an embodiment of the utility model, the two ends of the rear beam wrap around 2 / 3 of the rear bushing tube.
[0017] According to an embodiment of the present utility model, the cross-sections of the left longitudinal beam and the right longitudinal beam are an integrated annular structure.
[0018] According to an embodiment of the present utility model, the cross section of the front beam is an integrated annular structure.
[0019] According to an embodiment of the utility model, the lower end surface of the rear beam is welded to the rear motor sleeve.
[0020] According to an embodiment of the utility model, the rear subframe for an electric vehicle further comprises a spring link bracket and a wire harness mounting bracket, and the wire harness mounting bracket is integrated in the spring link bracket.
[0021] According to an embodiment of the utility model, the spring link bracket and the wiring harness mounting bracket are stamped.
[0022] The utility model also provides a car, which is characterized in that the car comprises the rear subframe for the electric car as described above.
[0023] The positive and progressive effects of the utility model are:
[0024] The utility model electric vehicle rear subframe and the vehicle including the same have the following advantages:
[0025] 1. Simplified structure, reduced number of parts, reduced assembly weight and weld length;
[0026] Second, the longitudinal beam and front beam adopt hydraulic beams, eliminating the internal reinforcement plate and reducing the welds;
[0027] 3. The rear beam is changed to a hydraulic beam, and the lower end surface of the rear beam is directly welded to the rear motor sleeve, which can greatly enhance the axial stiffness of the motor sleeve, reduce stress, and increase service life;
[0028] 4. The camber link bracket is optimized into two parts, which can effectively improve stiffness, reduce weight, and reduce welds. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] 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:
[0030] Figure 1 It is a structural schematic diagram of the original design subframe in the prior art.
[0031] Figure 2 It is a structural schematic diagram of four major beams in the prior art.
[0032] Figure 3 The figure is a schematic diagram of the installation of the lower plate of the longitudinal beam and the inner reinforcement plate in the prior art.
[0033] Figure 4 The figure is a schematic diagram of the installation of the lower plate of the front beam and the inner reinforcement plate in the prior art.
[0034] Figure 5 It is an assembly diagram of a subframe in the prior art.
[0035] Figure 6 It is a structural schematic diagram of the camber connecting rod bracket in the prior art.
[0036] Figure 7 It is a structural schematic diagram of a spring connecting rod bracket in the prior art.
[0037] Figure 8 It is a schematic diagram of the installation of a spring connecting rod bracket in the prior art.
[0038] Fig. 9 The utility model is a schematic structural diagram of a rear auxiliary frame for an electric vehicle.
[0039] Fig.10 The utility model is a top view of the rear subframe for an electric vehicle.
[0040] Fig.11 The utility model is a schematic structural diagram of the left longitudinal beam / right longitudinal beam in the rear subframe for electric vehicles.
[0041] Fig.12 for Fig.11 Schematic diagram of the cross section taken along line AA.
[0042] Fig.13 It is a three-dimensional diagram of the front beam in the rear subframe for an electric vehicle of the utility model.
[0043] Fig.14 The utility model is a front view of the front beam of the rear auxiliary frame for electric vehicles.
[0044] Fig.15 for Fig.14 Schematic diagram of the cross section taken along line BB.
[0045] Fig.16 The utility model is a three-dimensional diagram of a rear beam in a rear auxiliary frame for an electric vehicle.
[0046] Fig.17 The utility model is a front view of a rear beam in a rear auxiliary frame for an electric vehicle.
[0047] Fig.18 for Fig.16 Schematic diagram of the cross section taken along line CC.
[0048] Fig.19 The utility model is a schematic diagram of a rear beam enclosing a motor sleeve in a rear auxiliary frame for an electric vehicle.
[0049] Fig. 20 The utility model is a three-dimensional diagram of the outward-inclined connecting rod bracket in the rear auxiliary frame for electric vehicles.
[0050] Fig.21 The utility model is a side view of the outward-inclined connecting rod bracket in the rear auxiliary frame for electric vehicles.
[0051] Fig. 22 The utility model is a schematic diagram of the installation of the outward-inclined connecting rod bracket in the rear auxiliary frame for electric vehicles.
[0052] Fig.23The utility model is a three-dimensional diagram of a spring connecting rod bracket in a rear auxiliary frame for an electric vehicle.
[0053] Fig.24 The utility model is a schematic diagram of the installation of a spring connecting rod bracket in a rear auxiliary frame for an electric vehicle.
[0054] [Reference Signs]
[0055] Subframe 10
[0056] Front beam 11
[0057] Stringer 12
[0058] Back beam 13
[0059] Stringer cavity 121
[0060] Front beam cavity 111
[0061] Reinforcement plate 14
[0062] Camber connecting rod bracket 15
[0063] Camber connecting rod bracket front piece 151
[0064] Camber connecting rod bracket upper reinforcement plate 152
[0065] Camber connecting rod bracket rear piece 153
[0066] Spring connecting rod bracket 16
[0067] Wiring harness bracket 17
[0068] Front beam 100
[0069] Back beam 200
[0070] Left longitudinal beam 300
[0071] Right longitudinal beam 400
[0072] Camber connecting rod bracket 500
[0073] Front piece 510
[0074] Back film 520
[0075] Rear bushing 600
[0076] Rear motor sleeve 700
[0077] Spring connecting rod bracket 800
[0078] Wiring harness mounting bracket 900 DETAILED DESCRIPTION
[0079] 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.
[0080] 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.
[0081] 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.
[0082] 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.
[0083] like Figures 9 to 24 As shown, the utility model discloses a rear subframe for an electric vehicle, which includes a front beam 100, a rear beam 200, a left longitudinal beam 300, a right longitudinal beam 400 and an outward-leaning connecting rod bracket 500. The left longitudinal beam 300 and the right longitudinal beam 400 are respectively installed between the front beam 100 and the rear beam 200, and are located on both sides of the front beam 100 and the rear beam 200. The front beam 100, the rear beam 200, the left longitudinal beam 300 and the right longitudinal beam 400 are all hydraulic beams.
[0084] The camber link bracket 500 includes a front plate 510 and a rear plate 520 , the upper edges of the front plate 510 and the rear plate 520 are connected to the left longitudinal beam 300 and the right longitudinal beam 400 , and the lower edges are extended outward to connect the left longitudinal beam 300 and the right longitudinal beam 400 .
[0085] In this embodiment, the camber link bracket 500 is optimized into two parts, the top cover plate is removed, the upper edges of the front piece 510 and the rear piece 520 are connected to the longitudinal beam, and the lower edges are extended outward and connected to the longitudinal beam, which can effectively improve the rigidity, reduce the weight, and reduce the welds.
[0086] Preferably, the two ends of the rear beam 200 wrap around the rear bushing tube 600. For example, the two ends of the rear beam 200 preferably wrap around 2 / 3 of the rear bushing tube 600. This structure not only improves rigidity, but also reduces stress and improves life.
[0087] The cross-section of the left longitudinal beam 300 and the right longitudinal beam 400 is an integrated annular structure.
[0088] Since the left longitudinal beam 300 and the right longitudinal beam 400 adopt the structure of the hydraulic beam, the internal reinforcement plate is eliminated, the welding seams are reduced, and the cross section forms an integrated ring structure.
[0089] Similarly, the cross section of the front beam 100 is an integrated ring structure.
[0090] Since the front beam 100 also adopts the structure of a hydraulic beam, the internal reinforcement plate is eliminated, and the welds are reduced, so that the cross section forms an integrated ring structure.
[0091] Further preferably, the lower end surface of the rear beam 200 is welded to the rear motor sleeve 700 .
[0092] After the rear beam 200 is changed into a hydraulic beam in the present application, the lower end surface of the rear beam 200 is directly welded to the rear motor sleeve 600, which greatly enhances the isotropic stiffness of the rear motor sleeve 700.
[0093] In addition, the rear subframe for the electric vehicle further includes a spring link bracket 800 and a wire harness mounting bracket 900 , and the wire harness mounting bracket 900 is integrated into the spring link bracket 800 .
[0094] The spring link bracket 800 and the harness mounting bracket 900 are preferably formed by stamping. The spring link bracket 700 is all edge-matched, which greatly reduces the difficulty of stamping and also reduces the difficulty of welding.
[0095] In this embodiment, the rear subframe optimizes the design of the spring link bracket 800 and integrates the wiring harness mounting bracket 900 into the spring link bracket 800, thereby simplifying the structure and making stamping more convenient.
[0096] The utility model also provides an automobile, which comprises the rear auxiliary frame for the electric automobile as described above.
[0097] According to the above structural description, in order to simplify the structure, reduce the number of parts, and reduce the length of the heavyweight weld of the assembly, the rear subframe of the electric vehicle of the utility model changes the front beam, the left longitudinal beam, the right longitudinal beam and the rear beam into hydraulic beams, which not only simplifies the structure but also reduces the parts.
[0098] In addition, fasteners can be removed, with a total of 45 parts, 10 fewer than the original design (see Table 1 for details). At the same time, since the four girders use hydraulic beams, the number of welds is reduced, and the total weld length is about 13.5m, about 9m less than the original design.
[0099] Table 1:
[0100]
[0101] In summary, the utility model electric vehicle rear subframe and the vehicle including the same have the following advantages:
[0102] 1. Simplified structure, reduced number of parts, reduced assembly weight and weld length;
[0103] Second, the longitudinal beam and front beam adopt hydraulic beams, eliminating the internal reinforcement plate and reducing the welds;
[0104] 3. The rear beam is changed to a hydraulic beam, and the lower end surface of the rear beam is directly welded to the rear motor sleeve, which can greatly enhance the axial stiffness of the motor sleeve, reduce stress, and increase service life;
[0105] 4. The camber link bracket is optimized into two parts, which can effectively improve stiffness, reduce weight, and reduce welds.
[0106] 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.
[0107] 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.
[0108] 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.
[0109] 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. A rear subframe for an electric vehicle, characterized in that: The rear subframe for electric vehicles comprises a front beam, a rear beam, a left longitudinal beam, a right longitudinal beam and an outward-inclined connecting rod bracket, wherein the left longitudinal beam and the right longitudinal beam are respectively installed between the front beam and the rear beam and are located on both sides of the front beam and the rear beam, and the front beam, the rear beam, the left longitudinal beam and the right longitudinal beam are all hydraulic beams; The outward-leaning connecting rod bracket includes a front plate and a rear plate, the upper edges of the front plate and the rear plate are connected to the left longitudinal beam and the right longitudinal beam, and the lower edges are extended outwards and connected to the left longitudinal beam and the right longitudinal beam.
2. The rear subframe for an electric vehicle according to claim 1, characterized in that: The two ends of the rear beam wrap around the rear bushing tube.
3. The rear subframe for an electric vehicle as claimed in claim 2, characterized in that: The two ends of the rear beam wrap around the rear bushing tube for 2 / 3 of a circle.
4. The rear subframe for an electric vehicle according to claim 1, characterized in that: The cross-sections of the left longitudinal beam and the right longitudinal beam are an integrated annular structure.
5. The rear subframe for an electric vehicle according to claim 1, characterized in that: The cross section of the front beam is an integrated annular structure.
6. The rear subframe for an electric vehicle according to claim 1, characterized in that: The lower end surface of the rear beam is welded to the rear motor sleeve.
7. The rear subframe for an electric vehicle according to claim 1, characterized in that: The rear subframe for the electric vehicle further comprises a spring link bracket and a wire harness mounting bracket, wherein the wire harness mounting bracket is integrated in the spring link bracket.
8. The rear subframe for an electric vehicle as claimed in claim 7, characterized in that: The spring link bracket and the wiring harness mounting bracket are formed by stamping.
9. A car, characterized in that: The vehicle comprises a rear subframe for an electric vehicle as described in any one of claims 1 to 8.