Suspension assembly and vehicle

Abstract

The utility model relates to a suspension assembly and a vehicle. The suspension assembly comprises an auxiliary frame, two control arms, a leaf spring and a connecting frame. The two control arms are arranged on the two sides of the auxiliary frame in the first direction and connected to the auxiliary frame. The two ends, in the first direction, of the leaf spring are connected with the control arms correspondingly, the leaf spring is connected with the auxiliary frame through a connecting frame, and the connecting frame is configured to be adjustable in position relative to the auxiliary frame and the leaf spring in the first direction. According to the suspension assembly, the leaf spring is connected with the auxiliary frame through the connecting frame, and the connecting frame is configured to be adjustable relative to the position of the auxiliary frame and the leaf spring in the first direction, so that the distance between the connecting position of the leaf spring and the auxiliary frame and the distance between the leaf spring and the control arm are adjustable; therefore, the rigidity of the suspension assembly is linearly adjustable, and the personalized requirements of different operators and different use scenes on the control and smoothness of the suspension assembly are met.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to suspension assemblies and vehicles. Background Technology

[0002] With the rapid development of the automotive industry, vehicles have become important means of travel and transportation, with their power primarily stored in batteries. However, with the continuous upgrading of vehicle functions and structures, vehicle diversity has become particularly important.

[0003] One of the functions of a vehicle's suspension assembly is to provide a certain vertical stiffness for the entire vehicle, ensuring the vehicle's chassis handling stability and ride comfort. Suspension assemblies typically use elastic elements to dampen impact forces. The elastic coefficient of these elements is a crucial factor affecting the stiffness of the suspension assembly. However, in current technologies, the stiffness of these elastic elements cannot be adjusted, failing to meet the diverse needs of different vehicles. Utility Model Content

[0004] This application provides a suspension assembly and a vehicle designed to achieve adjustable stiffness of the suspension assembly.

[0005] In a first aspect, this application proposes a suspension assembly for a vehicle, the suspension assembly including a subframe, two control arms, leaf springs and a connecting frame; the two control arms are disposed on both sides of the subframe along a first direction and connected to the subframe; the two ends of the leaf springs along the first direction are respectively connected to the control arms, and the leaf springs are connected to the subframe through the connecting frame, wherein the connecting frame is configured to be adjustable in position relative to the subframe and the leaf springs in the first direction.

[0006] According to one embodiment of this application, the suspension assembly further includes a connector, and the connector is movably connected to the subframe in a first direction via the connector.

[0007] According to one embodiment of this application, the subframe has a groove extending in a first direction, and the connector is configured to move within the groove.

[0008] According to one embodiment of this application, the suspension assembly includes a plurality of connectors and a plurality of limiting members spaced apart in a first direction within a groove.

[0009] According to one embodiment of this application, the suspension assembly further includes a limiting member connected to the connecting member, the limiting member being used to restrict the movement of the connecting member within the groove.

[0010] According to one embodiment of this application, the subframe is provided with a scale for indicating the size of the slide along a first direction.

[0011] According to one embodiment of this application, the connecting frame includes a first frame and a second frame arranged along a second direction. The first frame is disposed on the side of the second frame facing the leaf spring. The first frame and the second frame enclose a receiving cavity. The leaf spring passes through the receiving cavity along a first direction. The first direction and the second direction are perpendicular. The surface of the subframe facing the first frame has an inwardly recessed portion. The surface of the first frame facing the subframe has a protruding portion. The protruding portion and the recessed portion are fitted together.

[0012] According to one embodiment of this application, the subframe is provided with a groove, which is offset from the recess.

[0013] According to one embodiment of this application, the suspension assembly further includes a bushing disposed between the connecting frame and the leaf spring, and the bushing is sleeved on the outer periphery of the leaf spring, the bushing being configured to be positionally adjustable relative to the leaf spring in a first direction.

[0014] According to one embodiment of this application, the leaf spring includes a straight section and arcuate sections located at both ends of the straight section. The straight section is connected to the arcuate sections, and the arcuate sections are at least partially arcuate. The arcuate sections include a first arcuate surface and a second arcuate surface. The first arcuate surface is connected to the straight section and the second arcuate surface, and the second arcuate surface is connected to the control arm. The first arcuate surface is a concave surface facing the subframe recess, and the second arcuate surface is a convex surface facing the subframe protruding.

[0015] Secondly, this application proposes a vehicle that includes the suspension assembly as described above.

[0016] The suspension assembly provided in this application connects the leaf spring to the subframe via a connecting bracket, which is configured to be adjustable in position relative to the subframe and the leaf spring in a first direction. This allows for adjustment of the connection position between the leaf spring and the subframe, as well as the distance between the leaf spring and the control arm, thereby achieving linearly adjustable suspension assembly stiffness. This meets the personalized requirements of different operators and usage scenarios regarding suspension assembly handling and ride comfort. Applying this suspension assembly to vehicles enables vehicles to be diversified under different usage scenarios, functional positioning, and performance requirements.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the suspension assembly provided in some embodiments of this application;

[0020] Figure 2 This is a partial structural schematic diagram of a suspension assembly provided in some embodiments of this application;

[0021] Figure 3 This is a partial structural schematic diagram of a suspension assembly provided in other embodiments of this application;

[0022] Figure 4 This is a partial structural schematic diagram of a suspension assembly provided for some embodiments of this application.

[0023] The accompanying drawings may not be drawn to scale.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Suspension assembly;

[0026] 10. Subframe; 11. Slide groove; 12. Recess;

[0027] 20. Control arm;

[0028] 30. Leaf spring; 31. Straight section; 32. Arc section; 321. First arc surface; 322. Second arc surface;

[0029] 40. Connecting frame; 41. First frame; 411. Protrusion; 42. Second frame; 43. Receiving cavity;

[0030] 50. Connectors;

[0031] 60. Limiting components;

[0032] 70. Bushing;

[0033] First direction x; second direction y; third direction z. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0036] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0039] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0040] In this application, "multiple" means two or more (including two).

[0041] One of the functions of a vehicle's suspension assembly is to provide a certain vertical stiffness for the entire vehicle, ensuring the vehicle's handling stability and ride comfort. Setting the vertical stiffness of the suspension assembly typically requires preliminary calculations based on sprung mass to meet frequency offset targets, followed by chassis tuning and subjective evaluation to determine the final value. Different users and different usage scenarios have different requirements for suspension assembly stiffness. For example, a comfort-oriented chassis will have a softer suspension assembly, while a handling-oriented chassis will have a stiffer one. Furthermore, different application scenarios also have different requirements for suspension assembly stiffness. To control development costs, core components need to achieve maximum commonality. Common elastic elements such as coil springs, leaf springs, and torsion bar springs have constant stiffness within their operating range; that is, their stiffness is a fixed value. In existing suspension assemblies, using these elastic elements results in a single, non-adjustable stiffness, thus failing to meet the differentiated stiffness requirements of different users and usage scenarios. The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art.

[0042] In view of the above problems, after in-depth research, a suspension assembly is proposed. The leaf spring is connected to the subframe through a connecting bracket, and the connecting bracket is configured to be adjustable in position relative to the subframe and the leaf spring in the first direction. This makes the connection position between the leaf spring and the subframe and the distance between the leaf spring and the control arm adjustable, thereby realizing linear adjustable stiffness of the suspension assembly and meeting the personalized requirements of different operators and different usage scenarios for the control and ride comfort of the suspension assembly.

[0043] The suspension assembly can be applied to vehicles, which can be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended vehicles, etc. This application does not impose any special limitations on the aforementioned vehicles.

[0044] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the suspension assembly provided in some embodiments of this application; Figure 2 This is a partial structural schematic diagram of a suspension assembly provided in some embodiments of this application.

[0045] like Figure 1 and Figure 2As shown, this application proposes a vehicle suspension assembly 100, which includes a subframe 10, two control arms 20, leaf springs 30, and a connecting frame 40. The two control arms 20 are disposed on both sides of the subframe 10 along a first direction x and connected to the subframe 10. The leaf springs 30 are connected to the control arms 20 at both ends along the first direction x, and are connected to the subframe 10 via the connecting frame 40. The connecting frame 40 is configured to be adjustable in position relative to the subframe 10 and the leaf springs 30 in the first direction x.

[0046] The subframe 10 is closely related to the vehicle's suspension system. It is an intermediate component that connects the vehicle's suspension system and body, and can improve the vehicle's comfort and handling. The suspension system includes leaf springs 30 and control arms 20, etc.

[0047] For example, the subframe 10 includes two first beams and a second beam. The two first beams are spaced apart along a first direction x, and the two ends of the second beam connect to the two first beams. The second beam extends along the first direction x. The first beams extend along a third direction z. The first beams and the second beam form a frame structure. The third direction z is the front-rear direction of the vehicle body.

[0048] Optionally, the second beam is located between the two first beams.

[0049] Optionally, the control arm 20 is located on the outside of the first beam along the first direction x.

[0050] The first direction, x, refers to the left and right directions of the vehicle body.

[0051] In some examples, the cross-sectional shapes of the first and second beams are generally channel-shaped, while others are Z-shaped or box-shaped.

[0052] In some examples, the first and second beams can be made of various materials, such as steel, aluminum alloy, or other composite materials. One option is carbon fiber composite material, which has the advantages of being lightweight, high-strength, and highly impact-resistant.

[0053] The control arm 20 has a large lateral stiffness, which makes the vehicle with the control arm 20 less prone to body roll when turning.

[0054] For example, the control arm 20 includes a first arm body and a second arm body. One end of the first arm body is connected to the subframe 10, one end of the second arm body is connected to the subframe 10, and the other end of the first arm body is connected to the other end of the second arm body. Both the other end of the first arm body and the other end of the second arm body are connected to the end of the leaf spring 30.

[0055] In some examples, the leaf spring 30 includes a middle section and ends connected to both ends of the middle section along a first direction x, the ends being connected to their respective control arms 20, and the middle section being connected to a connecting frame 40.

[0056] For example, the subframe 10 includes two first beams and a second beam, the two first beams being spaced apart along a first direction x, and the two ends of the second beam being connected to the two first beams. The leaf spring 30 includes a middle portion and end portions connected to both ends of the middle portion along the first direction x, the end portions being connected to the control arm 20, and the middle portion being connected to the two first beams respectively via a connecting bracket 40.

[0057] The connecting bracket 40 is used to carry the leaf spring 30 and connect the leaf spring 30 to the subframe 10. In some examples, the connecting bracket 40 may be directly connected to the leaf spring 30; alternatively, the connecting bracket 40 may be connected to the leaf spring 30 by other components, such as elastic elements.

[0058] In some examples, the connecting frame 40 is an integral structure; alternatively, the connecting frame 40 is a separate structure.

[0059] For example, the connecting frame 40 is provided with a plurality of attracting members at intervals along the first direction x, and the leaf spring 30 is provided with attracted members, and the attracting members and attracted members are attracted to each other.

[0060] For example, one of the subframe 10 and the connecting frame 40 is provided with a slide rail, and the other is provided with a slider, with the slide rail and the slider slidingly engaged. The connecting frame 40 has a receiving cavity 43, through which the leaf spring 30 passes and is slidably connected to the connecting frame 40.

[0061] The leaf spring 30 can support vertical loads. When subjected to a large impact, the kinetic energy generated by the impact force can be converted into the elastic potential energy of the leaf spring 30 and stored. This energy is released when the spring bounces down or returns to its original driving state, thereby mitigating and suppressing vibrations and impacts caused by uneven road surfaces.

[0062] like Figure 2 As shown, F represents the elastic force of the leaf spring, with its point of application being the geometric center of the contact surface with the control arm 20. Its position is relatively fixed. The lever arm of this force is L, and the length of L depends on the distance from force F to the geometric center of the contact surface between the leaf spring 30 and the connecting frame 40. When the position of the connecting frame 40 changes, the lever arm L also changes accordingly. F can be understood as the reaction force of the wheel end load. When the wheel end load and the dimension of L remain unchanged, F also remains unchanged. When L changes by ΔL, that is, when the lever arm of F changes from L to L+ΔL, let the stiffness of the leaf spring 30 before and after the change of the lever arm L be K1 and K2, respectively. Then, using the principle of virtual work, it can be calculated as follows:

[0063]

[0064] That is, when L increases, the stiffness of the blade spring 30 decreases, and when L decreases, the stiffness of the blade spring 30 increases.

[0065] When the connecting frame 40 is close to the control arm 20, the connection point between the leaf spring 30 and the subframe 10 is shorter than the distance between the leaf spring 30 and the control arm 20, resulting in higher stiffness.

[0066] When the connecting frame 40 is far from the control arm 20, the connection position between the leaf spring 30 and the subframe 10 and the distance between the leaf spring 30 and the control arm 20 are relatively long, resulting in lower stiffness.

[0067] The suspension assembly 100 provided in this application has a leaf spring 30 connected to a subframe 10 via a connecting bracket 40. The connecting bracket 40 is configured to be adjustable in position relative to the subframe 10 and the leaf spring 30 in a first direction x. This allows for adjustment of the connection position between the leaf spring 30 and the subframe 10, as well as the distance between the leaf spring 30 and the control arm 20. This enables linearly adjustable stiffness of the suspension assembly 100, meeting the personalized handling and ride comfort requirements of different operators and usage scenarios. Applying the suspension assembly 100 to vehicles allows for versatility in different usage scenarios, functional positioning, and performance requirements.

[0068] According to one embodiment of this application, the suspension assembly 100 further includes a bushing disposed between the leaf spring 30 and the control arm 20. The bushing has the function of cushioning and vibration isolation.

[0069] See also Figure 3 and Figure 4 , Figure 3 This is a partial structural schematic diagram of a suspension assembly provided in other embodiments of this application; Figure 4 This is a partial structural schematic diagram of a suspension assembly provided for some embodiments of this application.

[0070] According to one embodiment of this application, such as Figure 1 , Figure 3 and Figure 4 As shown, the suspension assembly 100 also includes a connector 50, and the connector 40 is movably connected to the subframe 10 along the first direction x via the connector 50.

[0071] In some examples, the suspension assembly 100 includes connectors 50, and the number of connectors 50 can be one or more, with multiple connectors 50 spaced apart or connected together.

[0072] For example, the subframe 10 is provided with a plurality of threaded holes spaced apart along the first direction x, and the connector 50 is a bolt. The bolt is engaged with different threaded holes to connect the connecting frame 40 to the subframe 10 and adjust the position of the connecting frame 40 relative to the subframe 10 along the first direction x.

[0073] For example, the subframe 10 is provided with a slide rail along the first direction x, and the connector 50 is a slider, which drives the connector 40 to slide within the slide rail.

[0074] In some examples, the connecting frame 40 is slidably connected to the leaf spring 30.

[0075] In these alternative embodiments, the connector 50 is used to connect the subframe 10 and the connecting frame 40, and to drive the connecting frame 40 to move relative to the subframe 10 along the first direction x, thereby simplifying the connection method between the subframe 10 and the connecting frame 40.

[0076] According to one embodiment of this application, such as Figure 3 and Figure 4 As shown, the subframe 10 has a groove 11 extending along a first direction x, and the connector 50 is configured to move within the groove 11.

[0077] In some examples, the subframe 10 has multiple grooves 11, which are spaced apart along a third direction z. Each groove 11 contains at least one connector 50.

[0078] For example, the connector 50 is a bolt and a nut, and the connecting bracket 40 is provided with a threaded hole. The bolt passes through the threaded hole and is bolted to the threaded hole. The bolt slides in the slide groove 11. After sliding to a preset position, the bolt and nut are connected, so that the connecting bracket 40 is fixed to the subframe 10. When it is necessary to adjust the position of the connecting bracket 40, the connection between the bolt and the nut can be released, and the bolt can continue to slide in the slide groove 11 to adjust to the preset position.

[0079] Optionally, the slide 11 extends through the subframe 10 along the second direction y. The connecting bracket 40 is disposed on one side of the subframe 10 along the second direction y. The second direction y is perpendicular to the first direction x. The second direction y is parallel to the thickness direction of the leaf spring 30.

[0080] In these alternative embodiments, the connection between the connecting frame 40 and the subframe 10 is simplified, which facilitates processing and manufacturing.

[0081] According to one embodiment of this application, such as Figure 3 and Figure 4 As shown, the suspension assembly 100 includes a plurality of connectors 50 and a plurality of limiting members 60 arranged at intervals along a first direction x within the slide groove 11.

[0082] In some examples, the subframe 10 includes two first beams and a second beam, the two first beams being spaced apart along a first direction x, and the two ends of the second beam connecting the two first beams. The first beams are provided with grooves 11 extending along the first direction x. The suspension assembly 100 includes a plurality of connectors 50, and each groove 11 is provided with at least one connector 50.

[0083] For example, the subframe 10 includes two first beams and a second beam, the two first beams being spaced apart along a first direction x, and the two ends of the second beam connecting the two first beams. Each first beam has two grooves 11 extending along the first direction x. The suspension assembly 100 includes eight connectors 50, each groove 11 having two connectors 50, the two connectors 50 being spaced apart along the first direction x.

[0084] In these alternative embodiments, this arrangement improves the connection stability between the connecting frame 40 and the subframe 10.

[0085] According to one embodiment of this application, such as Figure 3 and Figure 4 As shown, the suspension assembly 100 also includes a limiting member 60, which is connected to the connector 50 and is used to restrict the movement of the connector 50 within the slide groove 11.

[0086] For example, the connector 50 is a slide rod, which is slidably connected to the slide groove 11. The limiting member 60 is a stop.

[0087] According to one embodiment of this application, the subframe 10 is provided with a scale for marking the dimensions of the slide 11 along a first direction x.

[0088] In these alternative embodiments, this arrangement facilitates the positioning reference of the connecting frame 40 and the quantification of stiffness adjustment.

[0089] According to one embodiment of this application, such as Figure 1 , Figure 3 and Figure 4 As shown, the connecting frame 40 includes a first frame 41 and a second frame 42 arranged along the second direction y. The first frame 41 is disposed on the side of the second frame 42 facing the leaf spring 30. The first frame 41 and the second frame 42 enclose a receiving cavity 43. The leaf spring 30 passes through the receiving cavity 43 along the first direction x, and the first direction x and the second direction y are perpendicular. The surface of the subframe 10 facing the first frame 41 has an inwardly recessed portion 12, and the surface of the first frame 41 facing the subframe 10 has a protruding portion 411, which fits into the recessed portion 12.

[0090] In some examples, different preset positions can be set on the leaf spring 30 according to different position stiffness settings. The first frame 41 and the second frame 42 are moved to the preset positions. The first frame 41 and the second frame 42 are connected and clamp the leaf spring 30.

[0091] In some examples, the connecting frame 40 includes a first frame 41 and a second frame 42 disposed along the second direction y. The first frame 41 is disposed on the side of the second frame 42 facing the leaf spring 30. The first frame 41 and the second frame 42 are detachably connected, and the first frame 41 and the second frame 42 enclose each other to form a receiving cavity 43.

[0092] In some examples, the first frame 41 includes a first body portion and a first connecting portion, the first connecting portion being connected to the end of the first body portion and bent outward in a direction perpendicular to the first body portion. The first frame 41 includes a second body portion and a second connecting portion, the second connecting portion being connected to the end of the second body portion and bent outward in a direction perpendicular to the second body portion. The first connecting portion and the second connecting portion are stacked. The first connecting portion and the second connecting portion are connected.

[0093] Optionally, the connector 50 is connected to the first connecting part and the second connecting part.

[0094] Alternatively, the connecting bracket 40 is also provided with a connecting hole through which the first connecting part and the second connecting part pass, and the connecting hole mates with the connecting piece 50.

[0095] In these alternative embodiments, the interlocking structure serves a positioning function, increasing the connection area between the connecting frame 40 and the subframe 10, thereby increasing contact stability and improving connection strength. The interlocking of the protrusion 411 and the recess 12 provides a certain guiding function, facilitating relative movement between the connecting frame 40 and the subframe 10.

[0096] According to one embodiment of this application, such as Figure 3 and Figure 4 As shown, the subframe 10 is provided with a slide groove 11, which is offset from the recess 12.

[0097] For example, the subframe 10 includes two first beams and a second beam, the two first beams being spaced apart along a first direction x, and the two ends of the second beam connecting the two first beams. The first beams are provided with two grooves 11 extending along the first direction x. A recess 12 is located between the two grooves 11.

[0098] Alternatively, the connecting frame 40 includes a first frame 41 and a second frame 42 arranged along the second direction y. The first frame 41 is disposed on the side of the second frame 42 facing the leaf spring 30. The first frame 41 and the second frame 42 enclose a receiving cavity 43. The leaf spring 30 passes through the receiving cavity 43 along the first direction x, and the first direction x is perpendicular to the second direction y. One end of the connecting member 50 is connected to the first frame 41 and the second frame 42, and the other end of the connecting member 50 is disposed in the slide groove 11.

[0099] According to one embodiment of this application, the suspension assembly 100 further includes a bushing 70 disposed between the connecting frame 40 and the leaf spring 30, and the bushing 70 is sleeved on the outer periphery of the leaf spring 30. The bushing 70 is configured to be adjustable in position relative to the leaf spring 30 in a first direction x.

[0100] Optionally, the bushing 70 includes a removable first base and a second base.

[0101] In these alternative embodiments, the bushing 70 can increase the friction between the mounting bracket and the leaf spring 30, improving the slippage of the leaf spring 30 from the connecting bracket 40. The bushing 70 has a cushioning and vibration isolation function.

[0102] According to one embodiment of this application, such as Figure 1 and Figure 2 As shown, the leaf spring 30 includes a straight section 31 and arcuate sections 32 located at both ends of the straight section 31. The straight section 31 is connected to the arcuate sections 32, and the arcuate sections 32 are at least partially arcuate. The arcuate sections 32 include a first arcuate surface 321 and a second arcuate surface 322. The first arcuate surface 321 is connected to the straight section 31 and the second arcuate surface 322, and the second arcuate surface 322 is connected to the control arm 20. The first arcuate surface 321 is a concave surface facing the subframe 10, and the second arcuate surface 322 is a convex surface facing the subframe 10.

[0103] For example, the subframe 10 includes two first beams and a second beam, the two first beams being spaced apart along a first direction x, and the two ends of the second beam connecting the two first beams. The leaf spring 30 includes a straight section 31 and arcuate sections 32 located at both ends of the straight section 31. The straight section 31 is connected to the first beam, and at least a portion of the straight section 31 is located between the two first beams. The arcuate sections 32 are located on the outer side of the first beam along the first direction x.

[0104] Optionally, the straight section 31 and the curved section 32 are an integral structure.

[0105] In these optional embodiments, the first arc surface 321 is a concave surface facing the recess of the subframe 10; the second arc surface 322 is a convex surface facing the protrusion of the subframe 10, which can increase the overall stress-bearing area of ​​the arc segment 32, disperse stress, improve stress concentration, and form a more stable structure.

[0106] Secondly, this application proposes a vehicle that includes the suspension assembly 100 as described above.

[0107] The vehicle can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended vehicles, etc. This application does not impose any special restrictions on the aforementioned vehicles.

[0108] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A suspension assembly for a vehicle, characterized in that, include: Subframe; Two control arms are disposed on both sides of the subframe along the first direction and connected to the subframe; The leaf spring and the connecting frame are provided. The two ends of the leaf spring along the first direction are respectively connected to the control arm, and the leaf spring is connected to the subframe through the connecting frame. The connecting frame is configured to be adjustable in position relative to the subframe and the leaf spring in the first direction.

2. The suspension assembly according to claim 1, characterized in that, The suspension assembly also includes a connector, and the connector is movably connected to the subframe along the first direction via the connector.

3. The suspension assembly according to claim 2, characterized in that, The subframe has a groove extending along the first direction, and the connector is configured to move within the groove.

4. The suspension assembly according to claim 2, characterized in that, The suspension assembly includes a plurality of the connecting members, and the plurality of the limiting members are spaced apart in the groove along the first direction.

5. The suspension assembly according to claim 2, characterized in that, The suspension assembly further includes a limiting member connected to the connecting member, the limiting member being used to restrict the movement of the connecting member within the slide groove; and / or The subframe is provided with a scale, which is used to indicate the size of the slide along the first direction.

6. The suspension assembly according to claim 1, characterized in that, The connecting frame includes a first frame and a second frame arranged along a second direction. The first frame is disposed on the side of the second frame facing the leaf spring. The first frame and the second frame enclose a receiving cavity. The leaf spring passes through the receiving cavity along the first direction, which is perpendicular to the second direction. The subframe has an inwardly recessed portion on its surface facing the first frame, and the first frame has a protruding portion on its surface facing the subframe, the protruding portion fitting into the recessed portion.

7. The suspension assembly according to claim 6, characterized in that, The subframe is provided with a sliding groove, which is offset from the recess.

8. The suspension assembly according to claim 7, characterized in that, The suspension assembly further includes a bushing disposed between the connecting frame and the leaf spring, and the bushing is sleeved on the outer periphery of the leaf spring. The bushing is configured to be positionally adjustable relative to the leaf spring in the first direction.

9. The suspension assembly according to claim 1, characterized in that, The leaf spring includes a straight section and arc-shaped sections at both ends of the straight section, the straight section being connected to the arc-shaped sections. Each arc-shaped section is at least partially arc-shaped, and includes a first arc surface and a second arc surface. The first arc surface connects to the straight section and the second arc surface, and the second arc surface connects to the control arm. The first arc surface is a concave surface facing the recess of the subframe; the second arc surface is a convex surface facing the protrusion of the subframe.

10. A vehicle, characterized in that, Includes the suspension assembly as described in any one of claims 1 to 9.

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