Auxiliary frame and vehicle

Abstract

The utility model is suitable for the technical field of vehicles, and provides an auxiliary frame and a vehicle, the vehicle comprises the auxiliary frame, and the auxiliary frame comprises a main frame and a connecting structure. The main frame is connected with a vehicle body; the connecting structure comprises a first support and a second support rigidly connected to the first support. The first support is arranged on the main frame and used for being connected with the stabilizer bar. The second support is arranged on the main frame and used for being connected with the power assembly. The first support used for being connected with the stabilizer bar and the second support used for being connected with the power assembly on the auxiliary frame are arranged to be in rigid connection, so that the structural rigidity of the first support can be enhanced under the rigid connection effect of the second support; the structural rigidity of the second support can also be enhanced under the rigid connection effect of the first support. In this way, the static rigidity of the first support can be improved, the modal and dynamic rigidity of the second support can be improved, in other words, the structural rigidity of the auxiliary frame can be improved, and therefore the performance of the vehicle can be improved.

Description

Technical Field

[0001] This application belongs to the technical field of vehicles, and more specifically, relates to a subframe and a vehicle. Background Art

[0002] In the related art, the subframe is the skeleton of the front and rear axles of a vehicle. The subframe is connected to the vehicle body, so that the axles are mounted on the vehicle body through the subframe. The vehicle may further include a powertrain and a stabilizer bar. The subframe is connected to the powertrain to mount the powertrain on the vehicle body. The stabilizer bar is mounted on the subframe.

[0003] In some cases, the structural stiffness of the subframe is poor. Specifically, the dynamic stiffness of the mounting bracket for the powertrain on the subframe, the static stiffness of the stabilizer bar bracket for mounting the stabilizer bar on the subframe, the modal of the subframe, etc. are poor, which is not conducive to improving the performance of the vehicle. Summary of the Utility Model

[0004] In view of the above problems, the embodiments of this application provide a subframe and a vehicle, which can solve the technical problem of poor structural stiffness of the subframe.

[0005] In a first aspect, the embodiments of this application provide a subframe, including:

[0006] A main frame for connecting to the vehicle body;

[0007] A connection structure, including a first bracket and a second bracket rigidly connected to the first bracket; the first bracket is disposed on the main frame and is used to connect the stabilizer bar; the second bracket is disposed on the main frame and is used to connect the powertrain.

[0008] For the subframe provided by the embodiments of this application, by setting the first bracket for connecting the stabilizer bar and the second bracket for connecting the powertrain on the subframe to be rigidly connected, the structural stiffness of the first bracket can be enhanced under the rigid connection action of the second bracket, and the structural stiffness of the second bracket can also be enhanced under the rigid connection action of the first bracket. In this way, it is beneficial to improve the static stiffness of the first bracket, and it is also beneficial to improve the modal and dynamic stiffness of the second bracket, that is, it is beneficial to improve the structural stiffness of the subframe, thereby being beneficial to improving the performance of the vehicle.

[0009] In some embodiments, the first bracket and the second bracket are in mutual abutment.

[0010] By the first bracket and the second bracket abutting against each other, a rigid connection between the first bracket and the second bracket is achieved. In this way, on the one hand, the use of other components between the first bracket and the second bracket can be reduced to lower the weight of the subframe. On the other hand, the first bracket and the second bracket abutting against each other can improve the rigid connection effect between the first bracket and the second bracket. Specifically, it can improve the effect of the first bracket and the second bracket providing tensile forces, supporting forces and other acting forces to each other, thereby facilitating the improvement of the static stiffness of the first bracket, the dynamic stiffness of the second bracket and the mode.

[0011] In some embodiments, the first bracket and the second bracket are integrally formed or welded and fixed or bolted and fixed or riveted and fixed between them.

[0012] By adopting the above technical solution, the first bracket and the second bracket can be integrated together by means of integral formation or welding and fixing or bolt fixing or riveting and fixing to achieve a rigid connection between the first bracket and the second bracket. Moreover, the rigid connection method between the first bracket and the second bracket is relatively flexible.

[0013] In some embodiments, in the distribution direction of the main frame and the first bracket, the second bracket extends beyond one end of the first bracket away from the main frame, and a connecting portion for connecting the power assembly is provided on the portion of the second bracket that extends beyond the first bracket.

[0014] In this way, the portion of the first bracket for connecting the stabilizer bar and the portion of the second bracket for connecting the power assembly can be effectively avoided, so as to improve the problem of position interference between the stabilizer bar and the power assembly, and facilitate the connecting structure to be respectively connected to the stabilizer bar and the power assembly.

[0015] In some embodiments, the subframe further includes a third bracket provided on the main frame, and the third bracket and the second bracket are used to cooperate in connecting the power assembly.

[0016] By providing the third bracket, the third bracket and the second bracket are used to cooperate in connecting the power assembly, which facilitates the connection of the subframe to the power assembly and can improve the connection reliability between the subframe and the power assembly.

[0017] In some embodiments, the number of connecting structures is multiple, and two of the connecting structures are set in a group;

[0018] The subframe further includes a mounting assembly, the mounting assembly is provided on the main frame and is used to connect the power assembly; in a direction intersecting with the distribution direction of the two connecting structures in a group, the mounting assembly and the connecting structures are spaced apart.

[0019] By suspending the component at intervals in a direction crossing the distribution direction of the two grouped connecting structures, the suspension component and the connecting structures are distributed at intervals, so that the second bracket of the two grouped connecting structures and the suspension component can be located at the three vertices of a triangle. In this way, the two grouped connecting structures and the suspension component can form a stable relationship to install the powertrain, thereby improving the installation and support reliability of the subframe for the powertrain.

[0020] In some embodiments, the main frame includes:

[0021] A first cross beam;

[0022] A second cross beam, disposed opposite to the first cross beam in a first direction;

[0023] A first longitudinal beam, connected to the first cross beam and the second cross beam;

[0024] A second longitudinal beam, connected to the first cross beam and the second cross beam, and disposed opposite to the first longitudinal beam in a second direction;

[0025] Wherein, the first direction and the second direction cross; the first bracket is disposed on at least one of the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam, and the second bracket is disposed on at least one of the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam.

[0026] With such a setting, the main frame is a frame structure formed by enclosing four beams. On the one hand, the main frame has better stability, and on the other hand, the applicability of the subframe is higher, and it can be applied to a variety of vehicle models.

[0027] In some embodiments, both the first bracket and the second bracket are disposed on the first cross beam;

[0028] Or, both the first bracket and the second bracket are disposed on the second cross beam;

[0029] Or, both the first bracket and the second bracket are disposed on the first longitudinal beam;

[0030] Or, both the first bracket and the second bracket are disposed on the second longitudinal beam.

[0031] By adopting the above technical solution, the first bracket and the second bracket are disposed on the same cross beam or longitudinal beam, which is beneficial to the first bracket and the second bracket to be close to each other and rigidly connected, that is, the first bracket and the adjacent second bracket are rigidly connected, which is beneficial to improving the static stiffness of the subframe for connecting the stabilizer bar, the dynamic stiffness and mode of the subframe for connecting the powertrain.

[0032] In some embodiments, the first bracket and the second bracket are disposed on one side of the main frame along a third direction, and the third direction crosses the first direction and the second direction respectively;

[0033] The main frame further includes a third cross beam, which is connected to the second cross beam and partially disposed on the side of the first longitudinal beam and the second longitudinal beam away from the first bracket along the third direction.

[0034] By partially disposing the third cross beam on the side of the first longitudinal beam and the second longitudinal beam away from the first bracket along the third direction, the third cross beam can achieve the effect of bottom support and bracing for the first longitudinal beam and the second longitudinal beam, thereby improving the stability and rigidity of the main frame.

[0035] In some embodiments, on the projection plane perpendicular to the third direction, the dimension of the projection of the third cross beam in the first direction is smaller than the dimension of the projection of the second cross beam in the first direction.

[0036] With such a setting, by adding the third cross beam and, on the projection plane perpendicular to the third direction, the dimension of the projection of the third cross beam in the first direction being smaller than the dimension of the projection of the second cross beam in the first direction, the third cross beam can achieve the bottom support effect for the first longitudinal beam and the second longitudinal beam, and the weight of the third cross beam is relatively small. Compared with the solution of increasing the thickness dimension of the second cross beam to achieve the bottom support effect for the first longitudinal beam and the second longitudinal beam, the weight reduction effect can be achieved for the subframe.

[0037] In some embodiments, on the projection plane perpendicular to the third direction, the projection of the second cross beam extends beyond the opposite sides of the projection of the third cross beam in the first direction.

[0038] By adopting the above technical solution, on the one hand, on the projection plane perpendicular to the third direction, the dimension of the projection of the third cross beam in the first direction is smaller than the dimension of the projection of the second cross beam in the first direction, so that on the basis that the third cross beam can achieve the bottom support effect for the first longitudinal beam and the second longitudinal beam, the weight reduction effect can be achieved for the subframe. On the other hand, on the projection plane perpendicular to the third direction, the projection of the second cross beam is located at the middle position of the projection of the third cross beam in the first direction. In this way, on the basis of the connection between the second cross beam and the third cross beam, the third cross beam can effectively bear and disperse the stress of the second cross beam, and then can jointly bear the stress of the subframe with the second cross beam, thereby effectively improving the stability and reliability of the subframe.

[0039] In some embodiments, in the third direction, the side of the first longitudinal beam away from the first bracket is flush with or extends beyond the second cross beam;

[0040] and / or, in the third direction, the side of the second longitudinal beam away from the first bracket is flush with or extends beyond the second cross beam.

[0041] By adopting the above technical solution, on the basis of the third cross beam achieving the bottom support effect for the first longitudinal beam and the second longitudinal beam, the dimension of the second cross beam in the third direction can be reduced, thereby effectively reducing the weight of the subframe.

[0042] In some embodiments, the third crossbeam includes a first beam portion and a second beam portion connected along a third direction; the first beam portion is connected to a side of the second crossbeam away from the first bracket along the third direction, and is disposed between the first longitudinal beam and the second longitudinal beam; the second beam portion extends beyond the first beam portion along a second direction, and is disposed on a side of the first longitudinal beam and the second longitudinal beam away from the first bracket along the third direction.

[0043] By adopting the above technical solution, the third crossbeam can be effectively connected to the second crossbeam, and can achieve a bottom support effect on the first longitudinal beam and the second longitudinal beam.

[0044] In some embodiments, the first beam portion is connected to the first longitudinal beam and the second longitudinal beam;

[0045] And / or, the second beam portion is connected to the first longitudinal beam and the second longitudinal beam.

[0046] By setting the third crossbeam as the first beam portion and the second beam portion, and the relative two ends of the second beam portion extending beyond the first beam portion along the second direction, a relatively large contact area can be provided between the third crossbeam and the first longitudinal beam, and between the third crossbeam and the second longitudinal beam, thereby facilitating the improvement of the connection reliability between the third crossbeam and the first longitudinal beam, and between the third crossbeam and the second longitudinal beam, so as to effectively improve the bottom support effect of the third crossbeam on the first longitudinal beam and the second longitudinal beam, and can effectively improve the stability and rigidity of the subframe.

[0047] In some embodiments, the third crossbeam and the second crossbeam are fixedly welded or integrally provided;

[0048] And / or, the third crossbeam and the first longitudinal beam are fixedly welded or integrally provided;

[0049] And / or, the third crossbeam and the second longitudinal beam are fixedly welded or integrally provided.

[0050] By adopting the above technical solution, the connection methods between the third crossbeam and the first longitudinal beam, and between the third crossbeam and the second longitudinal beam can be various, which is very flexible and conducive to the processing and forming of the subframe.

[0051] In a second aspect, an embodiment of the present application provides a vehicle, including a subframe.

[0052] For the vehicle provided by the embodiment of the present application, by adopting the subframe involved in the above embodiments, it is beneficial to improve the static stiffness of the first bracket, and is also beneficial to improve the mode and dynamic stiffness of the second bracket, that is, it is beneficial to improve the structural stiffness of the subframe, thereby being beneficial to the performance improvement of the vehicle.

[0053] The above description is only an overview of the technical solution of the present application. In order to better understand the technical means of the present application, it can be implemented according to the content of the specification. In order to make the above and other purposes, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically described. Description of the Drawings

[0054] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0055] Figure 1 Schematic diagram of a vehicle provided for some embodiments of the present application;

[0056] Figure 2 Stereoscopic structure diagram of a subframe provided for some embodiments of the present application;

[0057] Figure 3 For Figure 2 Stereoscopic structure diagram of the connection structure of the subframe and the third bracket provided;

[0058] Figure 4 For Figure 2 Partial structure diagram of the subframe provided;

[0059] Figure 5 For Figure 4 Enlarged view of part A in;

[0060] Figure 6 For Figure 2 Bottom view of the subframe provided;

[0061] Figure 7 For Figure 2 Stereoscopic structure diagram of the third crossbeam of the subframe provided.

[0062] Among them, the reference numerals in the drawings:

[0063] 1000 - Vehicle; 100 - Battery; 200 - Controller; 300 - Powertrain; 400 - Subframe; 10 - Main Frame; 11 - First Cross Beam; 12 - Second Cross Beam; 13 - First Longitudinal Beam; 14 - Second Longitudinal Beam; 15 - Third Cross Beam; 151 - First Beam Portion; 152 - Second Beam Portion; 20 - Connection Structure; 201 - First Connection Hole; 202 - Second Connection Hole; 21 - First Bracket; 22 - Second Bracket; 221 - Connection Portion; 30 - Third Bracket; 301 - Third Connection Hole; 40 - Mounting Assembly; 401 - Fourth Connection Hole; 41 - Fourth Bracket; L1 - First Dimension; L2 - Second Dimension; Y - First Direction; X - Second Direction; Z - Third Direction. Detailed Embodiment

[0064] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application and should not be construed as limiting the present application.

[0065] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

[0066] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0067] In the description of the present application, "a plurality of" means more than two, unless otherwise specifically defined. "More than two" includes two. Correspondingly, "multiple groups" means more than two groups, including two groups.

[0068] In the description of the present application, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0069] In the description of the present application, the term "and / or" is merely an association relationship describing associated objects, indicating that three relationships may exist. For example, A and / or B may represent: the existence of A, the simultaneous existence of A and B, and the existence of B. In addition, in the present application, the character " / " generally represents an "or" relationship between the associated objects before and after.

[0070] In the description of the embodiments of the present application, unless otherwise clearly specified and defined, the technical terms "proximity" and "adjacent" refer to being close in position. For example, for three components A1, A2, and B, if the distance between A1 and B is greater than the distance between A2 and B, then A2 is closer to B than A1, that is, A2 is in proximity to B, or it can also be said that B is in proximity to A2. In other words, A2 is adjacent to B. Another example is when there are multiple C components, which are respectively C1, C2... CN. When one of the C components, such as C2, is closer to the B component than other C components, then B is in proximity to C2, or it can also be said that C2 is in proximity to B. In other words, C2 is adjacent to B.

[0071] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0072] In the related art, the subframe is the framework of the front and rear axles of a vehicle. The subframe is connected to the vehicle body, so that the axles are installed on the vehicle body through the subframe.

[0073] The vehicle may further include a powertrain and a stabilizer bar. The subframe is connected to the powertrain to install the powertrain on the vehicle body. And the stabilizer bar is installed on the subframe.

[0074] In some cases, the structural stiffness of the subframe is poor. Specifically, the dynamic stiffness of the mounting bracket for the powertrain on the subframe, the static stiffness of the stabilizer bar bracket for mounting the stabilizer bar on the subframe, and the modal properties of the subframe are poor, which is not conducive to improving the vehicle performance.

[0075] For example, the mounting brackets and the stabilizer bar brackets on the subframe are arranged independently of each other. Such an arrangement is not conducive to improving the modal properties of the subframe and the dynamic stiffness of the mounting brackets, nor is it conducive to improving the static stiffness of the stabilizer bar brackets.

[0076] Based on the above considerations, the embodiments of the present application provide a subframe and a vehicle. By rigidly connecting the first bracket for connecting the stabilizer bar and the second bracket for connecting the powertrain on the subframe, the structural stiffness of the first bracket can be enhanced under the action of the rigid connection of the second bracket, and the structural stiffness of the second bracket can also be enhanced under the action of the rigid connection of the first bracket. In this way, it is conducive to improving the static stiffness of the first bracket, and also conducive to improving the modal properties and dynamic stiffness of the second bracket, that is, conducive to improving the structural stiffness of the subframe, thereby conducive to improving the vehicle performance.

[0077] In some embodiments, the subframe involved in the embodiments of the present application is applied to a vehicle.

[0078] Among them, classified by the power source, the vehicle can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. Classified by the drive mode, the vehicle can be a front-wheel drive vehicle, a rear-wheel drive vehicle or a four-wheel drive vehicle.

[0079] In some embodiments, please refer to Figure 1 , Figure 1 is a schematic diagram of a vehicle 1000 provided by some embodiments of the present application. A powertrain 300 is arranged inside the vehicle 1000, and the powertrain 300 is used to provide power for the vehicle 1000.

[0080] In some embodiments, the powertrain 300 may include a motor, and the motor is used as the power source of the powertrain 300 to provide power for the vehicle.

[0081] In some embodiments, the powertrain 300 may further include a transmission, and the transmission is connected to the motor to change the torque of the motor. Specifically, the transmission can be a mechanism for changing the speed and torque from the motor, and it can fix or shift the transmission ratio between the output shaft and the input shaft.

[0082] In some embodiments, please continue to refer to Figure 1, the vehicle 1000 may further include a battery 100 and a controller 200. The battery 100 may be disposed at the bottom, head, or tail of the vehicle 1000 for supplying power to the vehicle 1000. For example, the battery 100 may serve as the operating power source of the vehicle 1000. The controller 200 is used to control the battery 100 to supply power to the powertrain 300, such as for the startup, navigation, and working power requirements during driving of the vehicle 1000.

[0083] In some embodiments, the battery 100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0084] The battery 100 can be a single physical module including one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or a combination of series and parallel through a busbar component. A combination of series and parallel means that there are both series and parallel connections among the multiple battery cells.

[0085] In some embodiments, the battery 100 can be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0086] In some embodiments, the battery 100 can be a battery pack, and the battery pack can include a box body and battery cells. As an example, the battery cells can be directly accommodated in the box body. As an example, the battery cells can also first form a battery module and then be accommodated in the box body.

[0087] As an example, multiple battery cells can be fixed to form a battery module by means of cable ties or the like.

[0088] As an example, multiple battery cells can also be fixed to form a battery module by means of end plates, side plates, or the like.

[0089] A battery cell refers to the smallest unit for storing and outputting electric energy. Among them, the battery cell can be a secondary battery or a primary battery. The battery cell can be, but is not limited to, a metal battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, etc.

[0090] In some embodiments, please refer to Figure 1 and Figure 2 , and in combination with other drawings. Among them, Figure 2 is a three-dimensional structure diagram of a subframe 400 provided by some embodiments of the present application. The vehicle 1000 may further include a vehicle body and a subframe 400. The subframe 400 is connected to the powertrain 300 and the vehicle body to mount the powertrain 300 on the vehicle body.

[0091] The vehicle body is the main skeletal structure of the vehicle 1000. Among them, the vehicle body may include vehicle body longitudinal beams and vehicle body cross beams, and the vehicle body longitudinal beams and vehicle body cross beams are arranged vertically and horizontally. The subframe 400 may be connected to the vehicle body longitudinal beam or the vehicle body cross beam.

[0092] The subframe 400 may be the front subframe of the vehicle 1000 or the rear subframe of the vehicle 1000.

[0093] In some embodiments, the vehicle 1000 may further include a stabilizer bar, and the stabilizer bar is connected to the subframe 400. The stabilizer bar can effectively share the lateral force received by the whole vehicle 1000, improve the roll performance of the vehicle 1000, so as to improve the reliability of the vehicle 1000 during driving.

[0094] Please refer to Figure 2 and Figure 3 together, and in combination with other drawings. Among them, Figure 3 is Figure 2 a three-dimensional structural diagram of the connection structure 20 of the subframe 400 and the third bracket 30 provided. The subframe 400 provided in the embodiment of the present application includes a main frame 10 and a connection structure 20. The main frame 10 is used to connect the vehicle body. The connection structure 20 includes a first bracket 21 and a second bracket 22, and the second bracket 22 is rigidly connected to the first bracket 21. The first bracket 21 is arranged on the main frame 10 and is used to connect the stabilizer bar. The second bracket 22 is arranged on the main frame 10 and is used to connect the power assembly 300.

[0095] The main frame 10 is the main frame structure of the subframe 400. The main frame 10 is used to connect the vehicle body, and specifically, it may be connected to the vehicle body longitudinal beam of the vehicle body or to the vehicle body cross beam of the vehicle body.

[0096] The connection structure 20 is a structure of the subframe 400 for connecting the stabilizer bar and the power assembly 300. The first bracket 21 and the second bracket 22 are respectively two types of brackets of the connection structure 20. The first bracket 21 is a bracket of the connection structure 20 for connecting the stabilizer bar, generally called a stabilizer bar bracket. The second bracket 22 is a bracket of the connection structure 20 for connecting the power assembly 300, generally called a mounting bracket.

[0097] Rigid connection means that in an ideal state, the two parts used for connection are fixed to each other, limited to each other, and restricted from each other, so as to be relatively stationary and will not generate relative movement, so that relative supporting forces, tensile forces and other acting forces can be stably generated, and its rigidity is strengthened.

[0098] The second bracket 22 is rigidly connected to the first bracket 21, such that in an ideal state, the portion of the second bracket 22 for connecting to the first bracket 21 and the portion of the first bracket 21 for connecting to the second bracket 22 are mutually constrained and no relative displacement will occur. The second bracket 22 can provide acting forces such as tensile force and supporting force to the first bracket 21, so that the structural stiffness of the second bracket 22 is strengthened under the rigid connection of the first bracket 21. Thus, when the first bracket 21 is connected to the stabilizer bar, the second bracket 22 provides acting forces such as tensile force and supporting force to the first bracket 21, so that the first bracket 21 and the second bracket 22 can cooperate with each other to jointly constrain the stabilizer bar, thereby enabling the first bracket 21 to connect the stabilizer bar more stably and reliably, so as to improve the static stiffness of the first bracket 21. Correspondingly, the first bracket 21 can also provide acting forces such as tensile force and supporting force to the second bracket 22, so that the structural stiffness of the first bracket 21 is strengthened under the rigid connection of the second bracket 22. Thus, when the second bracket 22 is connected to the powertrain 300, the first bracket 21 provides acting forces such as tensile force and supporting force to the second bracket 22, so that the first bracket 21 and the second bracket 22 can cooperate with each other to jointly constrain the powertrain 300, thereby enabling the second bracket 22 to connect the powertrain 300 more stably and reliably, so as to improve the mode and dynamic stiffness of the second bracket 22.

[0099] Among them, the rigid connection can include two ways: split connection and integrally formed setting. The split connection method can include at least one of the ways such as riveting fixation, bolt fixation, and welding fixation. It can be understood that the first bracket 21 and the second bracket 22 can be rigidly connected by means such as bolt fixation, welding fixation, and integrally formed setting.

[0100] For the subframe 400 provided by the embodiment of the present application, by setting the first bracket 21 for connecting the stabilizer bar and the second bracket 22 for connecting the powertrain 300 on the subframe 400 to be rigidly connected, the structural stiffness of the first bracket 21 can be strengthened under the rigid connection of the second bracket 22, and the structural stiffness of the second bracket 22 can also be strengthened under the rigid connection of the first bracket 21, that is, the structural stiffnesses of the first bracket 21 and the second bracket 22 can strengthen each other. Thus, it is beneficial to improve the static stiffness of the first bracket 21 and is also beneficial to improve the mode and dynamic stiffness of the second bracket 22. Therefore, it is beneficial to improve the structural stiffness of the subframe 400 to improve the performance of the vehicle 1000.

[0101] In some embodiments, the first bracket 21 is disposed on the main frame 10 and is rigidly connected to the main frame 10.

[0102] The first bracket 21 is rigidly connected to the main frame 10, so that in an ideal state, the parts of the first bracket 21 for connecting the main frame 10 and the parts of the main frame 10 for connecting the first bracket 21 are mutually constrained and no relative displacement will occur. The first bracket 21 and the main frame 10 can provide tensile forces, supporting forces and other acting forces to each other, so that the structural rigidity of the first bracket 21 and the main frame 10 can be mutually strengthened, thereby improving the structural rigidity of the subframe 400.

[0103] Wherein, the rigid connection between the first bracket 21 and the main frame 10 can be a split connection or an integrally formed setting. The split connection mode between the first bracket 21 and the main frame 10 can include at least one of the ways such as riveting fixation, bolt fixation, welding fixation and the like.

[0104] In some embodiments, the second bracket 22 is disposed on the main frame 10 and is rigidly connected to the main frame 10.

[0105] The second bracket 22 is rigidly connected to the main frame 10, so that in an ideal state, the parts of the second bracket 22 for connecting the main frame 10 and the parts of the main frame 10 for connecting the second bracket 22 are mutually constrained and no relative displacement will occur. The second bracket 22 and the main frame 10 can provide tensile forces, supporting forces and other acting forces to each other, so that the structural rigidity of the second bracket 22 and the main frame 10 can be mutually strengthened, thereby improving the structural rigidity of the subframe 400.

[0106] Wherein, the rigid connection between the second bracket 22 and the main frame 10 can be a split connection or an integrally formed setting. The split connection mode between the second bracket 22 and the main frame 10 can include at least one of the ways such as riveting fixation, bolt fixation, welding fixation and the like.

[0107] In some embodiments, please refer to Figure 2 and Figure 3 together, and in combination with other attached drawings. The first bracket 21 and the second bracket 22 are in mutual abutment.

[0108] It can be understood that the first bracket 21 and the second bracket 22 are in mutual abutment and connection to achieve the rigid connection between the first bracket 21 and the second bracket 22.

[0109] The first bracket 21 and the second bracket 22 are in mutual abutment to achieve a rigid connection between the first bracket 21 and the second bracket 22. In this way, on the one hand, the use of other components between the first bracket 21 and the second bracket 22 can be reduced to reduce the weight of the subframe 400. On the other hand, the mutual abutment of the first bracket 21 and the second bracket 22 can improve the rigid connection effect between the first bracket 21 and the second bracket 22. Specifically, it can improve the effects of the first bracket 21 and the second bracket 22 providing tensile forces, supporting forces and other acting forces for each other, thereby facilitating the improvement of the static stiffness of the first bracket 21, the dynamic stiffness and the mode of the second bracket 22.

[0110] In some embodiments, the first bracket 21 and the second bracket 22 can be spaced apart on the main frame 10, and the first bracket 21 and the second bracket 22 are fixed by bolts, rivets, etc., that is, bolt fixation, riveting fixation, etc. are achieved to achieve the rigid connection between the first bracket 21 and the second bracket 22.

[0111] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other drawings. The first bracket 21 and the second bracket 22 are integrally formed.

[0112] The integral formation of the first bracket 21 and the second bracket 22 makes the connection structure 20 an integral structure.

[0113] The integral formation of the first bracket 21 and the second bracket 22 achieves the rigid connection between the first bracket 21 and the second bracket 22, and makes the first bracket 21 and the second bracket 22 abut against each other.

[0114] The integral formation of the first bracket 21 and the second bracket 22 achieves the rigid connection between the first bracket 21 and the second bracket 22. And, on the one hand, the formation of the first bracket 21 and the second bracket 22 can be simplified, which is beneficial to the formation of the subframe 400. On the other hand, it is beneficial to improve the connection reliability between the first bracket 21 and the second bracket 22 to improve the rigid connection effect between the first bracket 21 and the second bracket 22, thereby facilitating the improvement of the structural stiffness of the first bracket 21 and the second bracket 22, and strengthening the effects of the first bracket 21 and the second bracket 22 providing tensile forces, supporting forces and other acting forces for each other. In this way, it is beneficial to improve the static stiffness of the first bracket 21 and is beneficial to improving the mode and dynamic stiffness of the second bracket 22.

[0115] In some embodiments, the first bracket 21 and the second bracket 22 are fixed by welding.

[0116] The rigid connection between the first bracket 21 and the second bracket 22 is realized by welding and fixing between the first bracket 21 and the second bracket 22. Moreover, the first bracket 21 and the second bracket 22 can be abutted against each other. In this way, it is beneficial to improve the rigid connection effect between the first bracket 21 and the second bracket 22, so that the first bracket 21 and the second bracket 22 can provide tensile forces, supporting forces and other acting forces for each other, thereby being beneficial to improving the static stiffness of the first bracket 21 and being beneficial to improving the mode and dynamic stiffness of the second bracket 22.

[0117] In some embodiments, the first bracket 21 and the second bracket 22 can also be fixed by bolts.

[0118] Specifically, bolts are passed through the first bracket 21 and the second bracket 22 to realize the rigid connection between the first bracket 21 and the second bracket 22.

[0119] Among them, when the first bracket 21 and the second bracket 22 are fixed by bolts, the first bracket 21 and the second bracket 22 can be abutted against each other or can be spaced apart.

[0120] In some embodiments, the first bracket 21 and the second bracket 22 can also be fixed by riveting.

[0121] Specifically, rivets are passed through the first bracket 21 and the second bracket 22 to realize the rigid connection between the first bracket 21 and the second bracket 22.

[0122] When the first bracket 21 and the second bracket 22 are fixed by riveting, the first bracket 21 and the second bracket 22 can be abutted against each other or can be spaced apart.

[0123] By adopting the above technical solutions, the first bracket 21 and the second bracket 22 can be integrated together by means of integral molding setting, welding and fixing, bolt fixing or riveting fixing to realize the rigid connection between the first bracket 21 and the second bracket 22, so that the first bracket 21 and the second bracket 22 can provide tensile forces, supporting forces and other acting forces for each other, and improve the structural stiffness of the first bracket 21 and the second bracket 22. Moreover, the rigid connection method between the first bracket 21 and the second bracket 22 is relatively flexible.

[0124] It should be supplemented and explained here that the number of the connection structures 20 can be one or more. The rigid connection between the first bracket 21 and the second bracket 22 of the connection structure 20 can be realized by connection methods such as welding and fixing, integral molding setting, etc. Among them, when the number of the connection structures 20 is multiple, the connection methods between the first bracket 21 and the second bracket 22 of any two connection structures 20 can be the same or different.

[0125] In some embodiments, please refer to Figure 2and Figure 3 and in combination with other drawings. The first bracket 21 is provided with a first connection hole 201 for connecting the stabilizer bar.

[0126] In some embodiments, please refer to Figure 2 and Figure 3 and in combination with other drawings. The second bracket 22 is provided with a second connection hole 202 for connecting the power assembly 300.

[0127] In some embodiments, please refer to Figure 2 and Figure 3 and in combination with other drawings. In the distribution direction of the main frame 10 and the first bracket 21, the second bracket 22 extends beyond one end of the first bracket 21 away from the main frame 10, and a connecting portion 221 is provided on the portion where the second bracket 22 extends beyond the first bracket 21 for connecting the power assembly 300.

[0128] The distribution direction of the main frame 10 and the first bracket 21 refers to the distribution direction of the main body portions of the main frame 10 and the first bracket 21.

[0129] Among them, the distribution direction of the main frame 10 and the first bracket 21 is the third direction Z involved below. Specifically, the first bracket 21 is disposed on one side of the main frame 10 along the third direction Z, that is, the main body portion of the first bracket 21 is disposed on one side of the main frame 10 along the third direction Z.

[0130] By making the second bracket 22 extend beyond one end of the first bracket 21 away from the main frame 10 in the distribution direction of the main frame 10 and the first bracket 21, and a connecting portion 221 for connecting the power assembly 300 is provided on the portion where the second bracket 22 extends beyond the first bracket 21, and the first bracket 21 is used to connect the stabilizer bar, the portion of the first bracket 21 for connecting the stabilizer bar and the connecting portion 221 of the second bracket 22 for connecting the power assembly 300 can be effectively avoided, so as to improve the problem of position interference between the stabilizer bar and the power assembly 300 and facilitate the connecting structure 20 to be respectively connected to the stabilizer bar and the power assembly 300.

[0131] Specifically, the second connection hole 202 is provided on the connecting portion 221. The subframe 400 can be connected to the power assembly 300 by bolts. By making the connecting portion 221 of the second bracket 22 extend beyond the first bracket 21, the bolts can effectively avoid the stabilizer bar when passing through the second connection hole 202.

[0132] In some embodiments, please refer to Figure 2 and Figure 3, and in combination with other attached drawings. The second bracket 22 further includes a bracket portion 222, and the bracket portion 222 is the part of the second bracket 22 rigidly connected to the first bracket 21. The bracket portion 222 and the connecting portion 221 are connected.

[0133] Specifically, the bracket portion 222 and the connecting portion 221 are sequentially connected along the third direction Z.

[0134] Among them, the connection between the bracket portion 222 and the connecting portion 221 can be achieved by means such as integrally molding setting and welding fixation.

[0135] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other attached drawings. At one end of the first bracket 21 away from the main frame 10 in the third direction Z, the above-mentioned first connection hole 201 is provided.

[0136] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other attached drawings. The second bracket 22 is provided with the above-mentioned second connection hole 202 penetrating along the second direction X involved below. Specifically, the connecting portion 221 of the second bracket 22 is provided with the above-mentioned second connection hole 202 penetrating along the second direction X.

[0137] With such a setting, the problem of position interference between the stabilizer bar and the power assembly 300 can be effectively improved.

[0138] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other attached drawings. In the connecting structure 20, the first bracket 21 and the second bracket 22 are sequentially connected substantially along the second direction X.

[0139] Specifically, the bracket portion 222 of the first bracket 21 and the second bracket 22 are sequentially connected along the second direction X.

[0140] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other attached drawings. The subframe 400 further includes a third bracket 30. The third bracket 30 is disposed on the main frame 10, and the third bracket 30 and the second bracket 22 are used to cooperatively connect the power assembly 300.

[0141] The third bracket 30 refers to the bracket of the subframe 400 for connecting the power assembly 300, and is generally called a mounting bracket.

[0142] By providing the third bracket 30, the third bracket 30 and the second bracket 22 are used to cooperatively connect the power assembly 300, which facilitates the connection of the subframe 400 to the power assembly 300, and can improve the connection reliability between the subframe 400 and the power assembly 300.

[0143] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other attached drawings. The second brackets 22 and the third brackets 30 are arranged in groups, and the grouped second brackets 22 and third brackets 30 are cooperatively connected to the power assembly 300.

[0144] Among them, in the grouped second brackets 22 and third brackets 30, the number of the second brackets 22 can be one or more, and the number of the third brackets 30 can also be one or more. As an example, as Figure 2 and Figure 3 shown, each of the second brackets 22 and each of the third brackets 30 are arranged in groups.

[0145] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other attached drawings. The third brackets 30 and the second brackets 22 are distributed along the second direction X involved below, and the third brackets 30 are provided with third connection holes 301 penetrating along the second direction X. The second connection holes 202 and the third connection holes 301 are used to cooperatively connect the power assembly 300.

[0146] Specifically, the subframe 400 can be connected to the power assembly 300 through fasteners. The fasteners sequentially pass through the second connection holes 202, the power assembly 300, and the third connection holes 301 along the second direction X, so as to realize the connection between the power assembly 300 and the subframe 400.

[0147] In some embodiments, the third brackets 30 are arranged on the main frame 10 and are rigidly connected to the main frame 10.

[0148] The rigid connection between the third brackets 30 and the main frame 10 enables, in an ideal state, the parts of the third brackets 30 for connecting the main frame 10 and the parts of the main frame 10 for connecting the third brackets 30 to be mutually constrained and not generate relative displacement. The third brackets 30 and the main frame 10 can provide tensile forces, supporting forces and other acting forces to each other, so that the structural rigidity of the third brackets 30 and the main frame 10 can be mutually enhanced, thereby improving the structural rigidity of the subframe 400.

[0149] Among them, the rigid connection between the third brackets 30 and the main frame 10 can be a split connection or an integrally formed setting. The split connection mode between the third brackets 30 and the main frame 10 can include at least one of bolt fixation, welding fixation and other methods.

[0150] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other attached drawings. The number of the connection structures 20 is multiple, and two of the connection structures 20 are arranged in groups.

[0151] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other drawings. The subframe 400 further includes a suspension assembly 40. The suspension assembly 40 is disposed on the main frame 10 and is used to connect the powertrain 300. In a direction intersecting the distribution direction of the set of two connection structures 20, the suspension assembly 40 and the connection structures 20 are spaced apart.

[0152] The suspension assembly 40 refers to the component structure of the subframe 400 for connecting the powertrain 300.

[0153] Among them, the intersection of the two directions means that the two directions can form an angle greater than 0° and less than 180°, that is, the two directions are not parallel. The two directions can be perpendicular to each other or not perpendicular. The two directions can be directions intersecting on the same plane, or can be directions on planes that are skew to each other, and the projection of one direction on the plane where the other direction is located can intersect with the other direction.

[0154] By arranging the suspension assembly 40 and the connection structures 20 to be spaced apart in a direction intersecting the distribution direction of the set of two connection structures 20, the second brackets 22 of the set of two connection structures 20 and the suspension assembly 40 can be located at the three vertices of a triangle. In this way, the set of two connection structures 20 and the suspension assembly 40 can form a stable relationship to install the powertrain 300, thereby improving the installation and support reliability of the subframe 400 for the powertrain 300.

[0155] In some embodiments, please refer to Figure 2 and Figure 3 , and in combination with other drawings. The set of two connection structures 20 are generally spaced apart along the second direction X. Among them, the direction intersecting the second direction X can be the first direction Y and the third direction Z below, or other directions.

[0156] In some embodiments, please refer to Figure 2 , and in combination with other drawings. In the second direction X, the suspension assembly 40 is located between the set of two connection structures 20.

[0157] In this way, the second brackets 22 of the set of two connection structures 20 and the suspension assembly 40 can be located at the three vertices of an acute triangle, which is beneficial to improving the installation and support reliability of the subframe 400 for the powertrain 300.

[0158] In some embodiments, the suspension assembly 40 is disposed on the main frame 10 and rigidly connected to the main frame 10. The explanation of the rigid connection between the suspension assembly 40 and the main frame 10 can refer to the explanation of the rigid connection between the first bracket 21 and the second bracket 22 and the rigid connection between the first bracket 21 and the main frame 10, which will not be repeated here.

[0159] In some embodiments, please refer to Figure 2 and, in combination with other drawings. The suspension assembly 40 includes a plurality of fourth brackets 41, and the plurality of fourth brackets 41 are spaced apart along the second direction X on the main frame 10, and the plurality of fourth brackets 41 cooperate together to connect the powertrain 300.

[0160] As an example, as Figure 2 shown, the suspension assembly 40 includes two fourth brackets 41 spaced apart along the second direction X.

[0161] Among them, the fourth bracket 41 can be rigidly connected to the main frame 10 by means such as welding fixation, integral molding, bolt fixation, riveting fixation, etc.

[0162] In some embodiments, please refer to Figure 2 and, in combination with other drawings. The fourth bracket 41 is provided with a fourth connection hole 401 penetrating along the second direction X, and the fourth connection hole 401 is used to connect the powertrain 300.

[0163] Specifically, the subframe 400 can be connected to the powertrain 300 through fasteners, and the fasteners pass through the fourth connection hole 401 and the powertrain 300 along the second direction X, so as to realize the connection between the powertrain 300 and the subframe 400.

[0164] In some embodiments, in the two connection structures 20 in a group, the second bracket 22 on each connection structure 20 forms a group with the adjacent third bracket 30 to cooperate in connecting the powertrain 300.

[0165] In some embodiments, please refer to Figure 2 and, in combination with other drawings. The main frame 10 includes a first cross beam 11, a second cross beam 12, a first longitudinal beam 13 and a second longitudinal beam 14. The second cross beam 12 is disposed opposite to the first cross beam 11 along the first direction Y. The first longitudinal beam 13 is connected to the first cross beam 11 and the second cross beam 12. The second longitudinal beam 14 is connected to the first cross beam 11 and the second cross beam 12. And the second longitudinal beam 14 is disposed opposite to the first longitudinal beam 13 along the second direction X. Among them, the first direction Y and the second direction X intersect. The first bracket 21 is disposed on at least one of the first cross beam 11, the second cross beam 12, the first longitudinal beam 13 and the second longitudinal beam 14, and the second bracket 22 is disposed on at least one of the first cross beam 11, the second cross beam 12, the first longitudinal beam 13 and the second longitudinal beam 14.

[0166] The first cross beam 11 and the second cross beam 12 are two cross beams of the main frame 10, and the first longitudinal beam 13 and the second longitudinal beam 14 are two longitudinal beams of the main frame 10. Among them, the first cross beam 11 and the second cross beam 12 may be parallel to each other or not. The first longitudinal beam 13 and the second longitudinal beam 14 may be parallel to each other or not.

[0167] The first cross beam 11 and the second cross beam 12 are spaced apart and oppositely arranged along the first direction Y, the first longitudinal beam 13 and the second longitudinal beam 14 are spaced apart and oppositely arranged along the second direction X, the first longitudinal beam 13 is connected to the first cross beam 11 and the second cross beam 12, and the second longitudinal beam 14 is connected to the first cross beam 11 and the second cross beam 12, so that the first cross beam 11, the second cross beam 12, the first longitudinal beam 13 and the second longitudinal beam 14 are arranged in a crisscross manner.

[0168] Among them, the connection between the first cross beam 11 and the first longitudinal beam 13, between the first cross beam 11 and the second longitudinal beam 14, between the second cross beam 12 and the first longitudinal beam 13, and between the second cross beam 12 and the second longitudinal beam 14 can be rigid connections, which may specifically include at least one of the methods such as integrally formed setting, welding fixation, bolt fixation, riveting fixation, etc. Among them, the rigid connection here can refer to the explanation of the rigid connection between the first bracket 21 and the second bracket 22 and the rigid connection between the first bracket 21 and the main frame 10, and will not be repeated here.

[0169] Among them, at least one of the first cross beam 11, the second cross beam 12, the first longitudinal beam 13 and the second longitudinal beam 14 is used to connect the vehicle body. As an example, the first cross beam 11, the second cross beam 12, the first longitudinal beam 13 and the second longitudinal beam 14 are all connected to the vehicle body.

[0170] With such a setting, the main frame 10 is a frame structure formed by enclosing four beams. On the one hand, the main frame 10 has better stability, and on the other hand, the applicability of the subframe 400 is higher and it can be applied to a variety of vehicle models.

[0171] It should be supplemented and explained here that the third bracket 30 is arranged on at least one of the first cross beam 11, the second cross beam 12, the first longitudinal beam 13 and the second longitudinal beam 14, and the suspension assembly 40 is arranged on at least one of the first cross beam 11, the second cross beam 12, the first longitudinal beam 13 and the second longitudinal beam 14. As an example, as Figure 2 shown, the third bracket 30 is arranged on the first cross beam 11, and the suspension assembly 40 is arranged on the second cross beam 12.

[0172] Among them, the first direction Y and the second direction X intersect, the first direction Y and the third direction Z intersect, and the second direction X and the third direction Z intersect.

[0173] The first direction Y and the second direction X intersect, which means that the first direction Y and the second direction X can form an angle greater than 0° and less than 180°, that is, the first direction Y and the second direction X are not parallel. The first direction Y and the second direction X can be perpendicular to each other or not. The first direction Y and the second direction X can be directions that intersect on the same plane, or can be directions on planes that are skew to each other, and the projection of the second direction X on the plane where the first direction Y is located can intersect with the first direction Y. Correspondingly, the meanings of the intersection of the first direction Y and the third direction Z, and the intersection of the second direction X and the third direction Z can be similarly explained and will not be repeated here.

[0174] As an example, the first direction Y is perpendicular to the second direction X, the first direction Y is perpendicular to the third direction Z, and the second direction X is perpendicular to the third direction Z.

[0175] In some embodiments, please refer to Figure 2 , and in combination with other drawings. Both the first bracket 21 and the second bracket 22 are disposed on the first cross beam 11.

[0176] As an example, as Figure 2 shown, both the first bracket 21 and the second bracket 22 are disposed on the first cross beam 11, and the first bracket 21 can also be partially disposed on the first longitudinal beam 13 or the second longitudinal beam 14.

[0177] In some embodiments, both the first bracket 21 and the second bracket 22 are disposed on the second cross beam 12.

[0178] In some embodiments, both the first bracket 21 and the second bracket 22 are disposed on the first longitudinal beam 13.

[0179] In some embodiments, both the first bracket 21 and the second bracket 22 are disposed on the second longitudinal beam 14.

[0180] By adopting the above technical solution, the first bracket 21 and the second bracket 22 are disposed on the same cross beam or longitudinal beam, which is beneficial for the first bracket 21 and the second bracket 22 to be close to each other and rigidly connected, that is, the first bracket 21 and the adjacent second bracket 22 are rigidly connected, which is beneficial to improve the static stiffness of the subframe 400 for connecting the stabilizer bar, the dynamic stiffness and mode of the subframe 400 for connecting the power assembly 300.

[0181] In some embodiments, please refer to Figure 2 , and in combination with other drawings. The first bracket 21 and the second bracket 22 are disposed on one side of the main frame 10 along the third direction Z. Among them, the third direction Z intersects with the first direction Y, and the third direction Z intersects with the second direction X.

[0182] In some embodiments, please refer to Figure 2 ,Figure 4 and Figure 5 , and in combination with other drawings. Among them, Figure 4 is Figure 2 a partial structural diagram of the subframe 400 provided, Figure 5 is Figure 4 an enlarged view of the position A in

[0183] The third cross beam 15 is a cross beam of the main frame 10.

[0184] In some cases, during the application of the subframe 400, the third direction Z can be the vertical direction, and the first bracket 21 and the second bracket 22 can be arranged on the top of the main frame 10. Based on this, a part of the third cross beam 15 is arranged at the bottom of the first longitudinal beam 13 and the second longitudinal beam 14 to achieve the effect of supporting the bottom of the first longitudinal beam 13 and the second longitudinal beam 14.

[0185] The connection between the third cross beam 15 and the second cross beam 12 can be achieved by means such as riveting fixation, bolt fixation, welding fixation, integral molding, etc.

[0186] By arranging a part of the third cross beam 15 on the side of the first longitudinal beam 13 and the second longitudinal beam 14 away from the first bracket 21 along the third direction Z, the third cross beam 15 can achieve the effects of bottom support and bracing for the first longitudinal beam 13 and the second longitudinal beam 14, thereby improving the stability and rigidity of the main frame 10.

[0187] It can be understood that the third cross beam 15 and the second cross beam 12 are rigidly connected. The explanation of this rigid connection can refer to the rigid connection between the first bracket 21 and the second bracket 22 and the rigid connection between the first bracket 21 and the main frame 10, which will not be repeated here.

[0188] In some cases, in order to achieve the effect of supporting the bottom of the first longitudinal beam 13 and the second longitudinal beam 14, generally, the thickness dimension of the second cross beam 12 in the third direction Z can be set to be greater than the thickness of the first longitudinal beam 13 in the third direction Z, so that the second cross beam 12 can extend to the side of the first longitudinal beam 13 and the second longitudinal beam 14 away from the first bracket 21 along the third direction Z, thereby achieving the effect of supporting the bottom of the first longitudinal beam 13 and the second longitudinal beam 14. However, such a setting makes the weight of the second cross beam 12 very large, thus increasing the weight of the subframe 400.

[0189] In some embodiments, please refer to Figures 4 to 6 , and in combination with other drawings. Among them, Figure 6 is Figure 2An upward view of the provided subframe 400, specifically a schematic view of the subframe 400 from the perspective of the third direction Z. Figure 6 The view of Figure 6 is similar to the projection view of the subframe 400 on the projection plane perpendicular to the third direction Z. On the projection plane perpendicular to the third direction Z, the dimension of the projection of the third cross member 15 in the first direction Y is smaller than the dimension of the projection of the second cross member 12 in the first direction Y.

[0190] On the projection plane perpendicular to the third direction Z, the dimension of the projection of the third cross member 15 in the first direction Y is the first dimension L1. On the projection plane perpendicular to the third direction Z, the dimension of the projection of the second cross member 12 in the first direction Y is the second dimension L2. The first dimension L1 is smaller than the second dimension L2.

[0191] With such a setting, by adding the third cross member 15, and on the projection plane perpendicular to the third direction Z, the dimension of the projection of the third cross member 15 in the first direction Y is smaller than the dimension of the projection of the second cross member 12 in the first direction Y, so that the third cross member 15 can achieve the underbody support effect on the first longitudinal beam 13 and the second longitudinal beam 14, and the weight of the third cross member 15 is relatively small. Compared with the solution of increasing the thickness dimension of the second cross member 12 to achieve the underbody support effect on the first longitudinal beam 13 and the second longitudinal beam 14, the weight reduction effect can be achieved for the subframe 400.

[0192] In some embodiments, please refer to Figures 4 to 6 together with other drawings. On the projection plane perpendicular to the third direction Z, the projection of the second cross member 12 extends beyond the opposite sides of the projection of the third cross member 15 along the first direction Y.

[0193] By adopting the above technical solution, on the one hand, on the projection plane perpendicular to the third direction Z, the dimension of the projection of the third cross member 15 in the first direction Y is smaller than the dimension of the projection of the second cross member 12 in the first direction Y, so that on the basis that the third cross member 15 can achieve the underbody support effect on the first longitudinal beam 13 and the second longitudinal beam 14, the weight reduction effect can be achieved for the subframe 400. On the other hand, on the projection plane perpendicular to the third direction Z, the projection of the second cross member 12 is located at the middle position of the projection of the third cross member 15 in the first direction Y. In this way, on the basis of the connection between the second cross member 12 and the third cross member 15, the third cross member 15 can effectively bear and disperse the stress of the second cross member 12, and then can jointly bear the stress of the subframe 400 with the second cross member 12, thereby effectively improving the stability and reliability of the subframe 400.

[0194] In some embodiments, please refer to Figures 4 to 6 together with other drawings. In the third direction Z, the side of the first longitudinal beam 13 away from the first bracket 21 extends beyond the second cross member 12.

[0195] In some embodiments, on the third direction Z, one side of the first longitudinal beam 13 away from the first bracket 21 is flush with the second cross beam 12.

[0196] In some embodiments, please refer to Figures 4 to 6 , and in combination with other drawings. On the third direction Z, one side of the second longitudinal beam 14 away from the first bracket 21 extends beyond the second cross beam 12.

[0197] In some embodiments, on the third direction Z, one side of the second longitudinal beam 14 away from the first bracket 21 is flush with the second cross beam 12.

[0198] By adopting the above technical solution, on the basis that the third cross beam 15 bottoms the first longitudinal beam 13 and the second longitudinal beam 14, the size of the second cross beam 12 in the third direction Z can be reduced, so that the subframe 400 can be effectively lightened.

[0199] In some embodiments, please refer to Figures 4 to 7 , and in combination with other drawings. Among them, Figure 7 is Figure 2 a three-dimensional structure diagram of the third cross beam 15 of the provided subframe 400. The third cross beam 15 includes a first beam portion 151 and a second beam portion 152. The first beam portion 151 and the second beam portion 152 are distributed along the third direction Z and are connected. The first beam portion 151 is connected to one side of the second cross beam 12 away from the first bracket 21 along the third direction Z, and is disposed between the first longitudinal beam 13 and the second longitudinal beam 14. The second beam portion 152 extends beyond the first beam portion 151 along the second direction X, and is disposed on one side of the first longitudinal beam 13 and the second longitudinal beam 14 away from the first bracket 21 along the third direction Z.

[0200] The first beam portion 151 and the second beam portion 152 are two cross beam parts of the third cross beam 15. On the third direction Z, the second cross beam 12, the first beam portion 151 and the second beam portion 152 are distributed in sequence and are connected.

[0201] Among them, the first beam portion 151 and the second beam portion 152 can be connected by means of riveting fixation, welding fixation, integral molding, bolt fixation, etc.

[0202] The connection between the first beam portion 151 and one side of the second cross beam 12 away from the first bracket 21 along the third direction Z can be realized by means of welding fixation, integral molding, bolt fixation, riveting fixation, etc.

[0203] Specifically, the second beam portion 152 has a dimension in the second direction X that is greater than the dimension of the first beam portion 151 in the second direction X. In the second direction X, the second beam portion 152 extends beyond the opposite ends of the first beam portion 151, and the portions of the second beam portion 152 that extend beyond the opposite ends of the first beam portion 151 are respectively disposed on the sides of the first longitudinal beam 13 and the second longitudinal beam 14 that are away from the first bracket 21 along the third direction Z.

[0204] It can be understood that in the third cross beam 15, the first beam portion 151 is used to connect the side of the second cross beam 12 that is away from the first bracket 21 along the third direction Z, and the portions of the second beam portion 152 that extend beyond the opposite ends of the first beam portion 151 in the second direction X are used to achieve a bottom support effect on the first longitudinal beam 13 and the second longitudinal beam 14.

[0205] By adopting the above technical solution, the third cross beam 15 can be effectively connected to the second cross beam 12, and can achieve a bottom support effect on the first longitudinal beam 13 and the second longitudinal beam 14.

[0206] In addition, the first beam portion 151 is disposed between the first longitudinal beam 13 and the second longitudinal beam 14. It can be understood that the first longitudinal beam 13 and the second longitudinal beam 14 extend beyond the side of the second cross beam 12 that is away from the first bracket 21 along the third direction Z, so that a space for accommodating the first beam portion 151 is formed between the first longitudinal beam 13 and the second longitudinal beam 14. In this way, the dimension of the second cross beam 12 in the third direction Z can be reduced, thereby effectively reducing the weight of the subframe 400.

[0207] It should be additionally noted here that on the projection plane perpendicular to the third direction Z, the dimension of the projection of the first beam portion 151 in the first direction Y is smaller than the dimension of the projection of the second cross beam 12 in the first direction Y, and the dimension of the projection of the second beam portion 152 in the first direction Y is smaller than the dimension of the projection of the second cross beam 12 in the first direction Y. Among them, on the projection plane perpendicular to the third direction Z, the dimension of the projection of the first beam portion 151 in the first direction Y and the dimension of the projection of the second beam portion 152 in the first direction Y may be the same or different.

[0208] It should also be additionally noted here that on the projection plane perpendicular to the third direction Z, the projection of the second cross beam 12 extends beyond the opposite ends of the first beam portion 151 in the first direction Y, and the projection of the second cross beam 12 also extends beyond the opposite ends of the second beam portion 152 in the first direction Y.

[0209] In some embodiments, please refer to Figures 4 to 7 together with other drawings. In the third cross beam 15, the number of the first beam portions 151 can be one or more.

[0210] Among them, in the third cross beam 15, when the number of the first beam parts 151 is multiple, the multiple first beam parts 151 are arranged at intervals along the first direction Y.

[0211] As an example, as Figure 7 shown, in the third cross beam 15, the number of the first beam parts 151 is two, and the two first beam parts 151 are respectively connected to the opposite ends of the second beam part 152 along the first direction Y. It can be understood that the opposite ends of the second beam part 152 are bent along the first direction Y to form the first beam parts 151.

[0212] In some embodiments, please refer to Figure 4 and Figure 5 together, and in combination with other drawings. The first beam part 151 is connected to the first longitudinal beam 13 and the second longitudinal beam 14.

[0213] Among them, the first beam part 151 can be connected to the first longitudinal beam 13 by means of welding fixation, integral molding, bolt fixation, riveting fixation, etc., and the first beam part 151 can be connected to the second longitudinal beam 14 by means of welding fixation, integral molding, bolt fixation, riveting fixation, etc.

[0214] In some embodiments, please refer to Figure 4 and Figure 5 together, and in combination with other drawings. The second beam part 152 is connected to the first longitudinal beam 13 and the second longitudinal beam 14.

[0215] Among them, the second beam part 152 can be connected to the first longitudinal beam 13 by means of welding fixation, integral molding, bolt fixation, riveting fixation, etc., and the second beam part 152 can be connected to the second longitudinal beam 14 by means of welding fixation, integral molding, bolt fixation, etc.

[0216] By setting the third cross beam 15 as the first beam part 151 and the second beam part 152, and the second beam part 152 extending beyond the opposite ends of the first beam part 151 along the second direction X, a relatively large contact area can be provided between the third cross beam 15 and the first longitudinal beam 13, and between the third cross beam 15 and the second longitudinal beam 14, thereby facilitating the improvement of the connection reliability between the third cross beam 15 and the first longitudinal beam 13, and between the third cross beam 15 and the second longitudinal beam 14, effectively improving the bottom support effect of the third cross beam 15 on the first longitudinal beam 13 and the second longitudinal beam 14, and effectively improving the stability and structural rigidity of the subframe 400.

[0217] In some embodiments, please refer to Figure 4 and Figure 5 together, and in combination with other drawings. The third cross beam 15 and the second cross beam 12 are integrally formed.

[0218] Specifically, the first beam portion 151 of the third cross beam 15 and the second cross beam 12 are integrally formed on the side away from the first bracket 21 along the third direction Z.

[0219] In some embodiments, the third cross beam 15 and the second cross beam 12 are fixedly welded.

[0220] Specifically, the first beam portion 151 of the third cross beam 15 and the second cross beam 12 are fixedly welded on the side away from the first bracket 21 along the third direction Z.

[0221] In some embodiments, please refer to Figure 4 and Figure 5 , and in combination with other drawings. The third cross beam 15 and the first longitudinal beam 13 are integrally provided.

[0222] Specifically, the first beam portion 151 of the third cross beam 15 can be integrally provided with the first longitudinal beam 13, and the second beam portion 152 of the third cross beam 15 can also be integrally provided with the first longitudinal beam 13.

[0223] In some embodiments, the third cross beam 15 and the first longitudinal beam 13 are fixedly welded.

[0224] Specifically, the first beam portion 151 of the third cross beam 15 can be fixedly welded to the first longitudinal beam 13, and the second beam portion 152 of the third cross beam 15 can also be fixedly welded to the first longitudinal beam 13.

[0225] In some embodiments, please refer to Figure 4 and Figure 5 , and in combination with other drawings. The third cross beam 15 and the second longitudinal beam 14 are integrally provided.

[0226] Specifically, the first beam portion 151 of the third cross beam 15 can be integrally provided with the second longitudinal beam 14, and the second beam portion 152 of the third cross beam 15 can also be integrally provided with the second longitudinal beam 14.

[0227] In some embodiments, the third cross beam 15 and the second longitudinal beam 14 are fixedly welded.

[0228] Specifically, the first beam portion 151 of the third cross beam 15 can be fixedly welded to the second longitudinal beam 14, and the second beam portion 152 of the third cross beam 15 can also be fixedly welded to the second longitudinal beam 14.

[0229] By adopting the above technical solutions, the connection manners between the third cross beam 15 and the first longitudinal beam 13 and between the third cross beam 15 and the second longitudinal beam 14 can be various, which is very flexible and beneficial to the processing and forming of the subframe 400.

[0230] In some embodiments, rigid connections can also be achieved between the third cross beam 15 and the second cross beam 12, between the third cross beam 15 and the first longitudinal beam 13, and between the third cross beam 15 and the second longitudinal beam 14 by means such as riveting or bolting.

[0231] Please refer to Figure 1 and Figure 2 , and in combination with other drawings. The vehicle 1000 provided by the embodiments of the present application includes a subframe 400. Among them, the subframe 400 in this embodiment is the same as the subframe 400 in the previous embodiment. For specific details, please refer to the relevant description of the subframe 400 in the previous embodiment, which will not be elaborated here.

[0232] The vehicle 1000 provided by the embodiments of the present application, by adopting the above-mentioned subframe 400, is beneficial to improving the static stiffness of the first bracket 21, and is also beneficial to improving the mode and dynamic stiffness of the second bracket 22, that is, beneficial to improving the structural stiffness of the subframe 400, thereby being beneficial to improving the performance of the vehicle 1000.

[0233] As one of the embodiments of the present application, as Figures 2 to 6 shown, the subframe 400 includes a main frame 10 and a connection structure 20. The connection structure 20 includes a first bracket 21 and a second bracket 22. The first bracket 21 is arranged on the main frame 10 and is used to connect the stabilizer bar. The second bracket 22 is arranged on the main frame 10 and is used to connect the powertrain 300. The first bracket 21 and the second bracket 22 are integrally formed. The main frame 10 includes a first cross beam 11, a second cross beam 12, a first longitudinal beam 13, a second longitudinal beam 14, and a third cross beam 15. The first cross beam 11 and the second cross beam 12 are spaced apart and opposite to each other along the first direction Y, the first longitudinal beam 13 and the second longitudinal beam 14 are spaced apart and opposite to each other along the second direction X, the first longitudinal beam 13 is connected to the first cross beam 11 and the second cross beam 12, and the second longitudinal beam 14 is connected to the first cross beam 11 and the second cross beam 12. The first bracket 21 and the second bracket 22 are arranged on one side of the main frame 10 along the third direction Z. The third cross beam 15 is connected to the side of the second cross beam 12 away from the first bracket 21 along the third direction Z, and is arranged on the side of the first longitudinal beam 13 and the second longitudinal beam 14 away from the first bracket 21 along the third direction Z. The first bracket 21 and the second bracket 22 are both arranged on the first cross beam 11. On the projection plane perpendicular to the third direction Z, the projection of the second cross beam 12 extends beyond the relative two sides of the projection of the third cross beam 15 along the first direction Y.

[0234] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A subframe, characterized in that: include: Main frame, used to connect the vehicle body; The connecting structure comprises a first bracket and a second bracket rigidly connected to the first bracket; the first bracket is arranged on the main frame and used for connecting the stabilizer bar; the second bracket is arranged on the main frame and used for connecting the powertrain.

2. The subframe according to claim 1, characterized in that: The first bracket and the second bracket abut against each other.

3. The subframe according to claim 1, characterized in that: The first bracket and the second bracket are integrally formed or fixed by welding or bolts or rivets.

4. The subframe according to any one of claims 1 to 3, characterized in that: In the distribution direction of the main frame and the first bracket, the second bracket extends beyond an end of the first bracket away from the main frame, and a portion of the second bracket extending beyond the first bracket is provided with a connecting portion for connecting to the powertrain.

5. The subframe according to any one of claims 1 to 3, characterized in that: The sub-frame also includes a third bracket arranged on the main frame, and the third bracket and the second bracket are used to cooperate and connect the power assembly.

6. The subframe according to any one of claims 1 to 3, characterized in that: The number of the connection structures is multiple, wherein two of the connection structures are arranged in a group; The sub-frame also includes a suspension component, which is arranged on the main frame and is used to connect the powertrain. In a direction intersecting with the distribution direction of the two connecting structures in a group, the suspension component and the connecting structure are spaced apart and distributed.

7. The subframe according to any one of claims 1 to 3, characterized in that: The main framework includes: First beam; a second crossbeam, arranged opposite to the first crossbeam along a first direction; a first longitudinal beam connected to the first transverse beam and the second transverse beam; a second longitudinal beam connected to the first transverse beam and the second transverse beam, and arranged opposite to the first longitudinal beam along a second direction; wherein the first direction and the second direction intersect; The first bracket is disposed on at least one of the first cross beam, the second cross beam, the first longitudinal beam, and the second longitudinal beam, and the second bracket is disposed on at least one of the first cross beam, the second cross beam, the first longitudinal beam, and the second longitudinal beam.

8. The subframe according to claim 7, characterized in that: The first bracket and the second bracket are both arranged on the first crossbeam; Alternatively, the first bracket and the second bracket are both arranged on the second crossbeam; Alternatively, the first bracket and the second bracket are both arranged on the first longitudinal beam; Alternatively, the first bracket and the second bracket are both arranged on the second longitudinal beam.

9. The subframe according to claim 7, characterized in that: The first bracket and the second bracket are arranged on one side of the main frame along a third direction, and the third direction intersects with the first direction and the second direction respectively; The main frame further includes a third cross beam, which is connected to the second cross beam and is partially disposed on a side of the first longitudinal beam and the second longitudinal beam away from the first bracket along the third direction.

10. The subframe according to claim 9, characterized in that: On a projection plane perpendicular to the third direction, a size of a projection of the third crossbeam in the first direction is smaller than a size of a projection of the second crossbeam in the first direction.

11. The subframe according to claim 9, characterized in that: On a projection plane perpendicular to the third direction, the projection of the second crossbeam extends beyond two opposite sides of the projection of the third crossbeam along the first direction.

12. The subframe according to claim 9, characterized in that: In the third direction, a side of the first longitudinal beam away from the first bracket is flush with or exceeds the second transverse beam; And / or, in the third direction, a side of the second longitudinal beam away from the first bracket is flush with or exceeds the second transverse beam.

13. The subframe according to claim 9, characterized in that: The third cross beam includes a first beam portion and a second beam portion connected along the third direction; the first beam portion is connected to a side of the second cross beam away from the first bracket along the third direction, and is arranged between the first longitudinal beam and the second longitudinal beam; the second beam portion extends beyond the first beam portion along the second direction, and is arranged on a side of the first longitudinal beam and the second longitudinal beam away from the first bracket along the third direction.

14. The subframe according to claim 13, characterized in that: The first beam portion is connected to the first longitudinal beam and the second longitudinal beam; And / or, the second beam portion is connected to the first longitudinal beam and the second longitudinal beam.

15. The subframe according to claim 9, characterized in that: The third cross beam and the second cross beam are fixed by welding or integrally arranged; And / or, the third cross beam and the first longitudinal beam are fixed by welding or integrally arranged; And / or, the third cross beam and the second longitudinal beam are fixed by welding or integrally arranged.

16. A vehicle, characterized in that: Comprising the subframe according to any one of claims 1-15.

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