Auxiliary frame assembly and vehicle

Abstract

The utility model relates to an auxiliary frame assembly and a vehicle, the auxiliary frame assembly comprises an auxiliary frame body and a silencer, the auxiliary frame body is constructed to be of a frame structure with an opening, the silencer is arranged at the opening and connected with the auxiliary frame body, and the silencer and the auxiliary frame body jointly define an annular frame structure. Due to the fact that the silencer and the auxiliary frame body can jointly define the auxiliary frame assembly of the annular structure, that is, the silencer is a part forming the auxiliary frame assembly, a space used for arranging the silencer does not need to be reserved above the auxiliary frame body, and a related structure used for fixing or avoiding the silencer does not need to be arranged above the auxiliary frame body. According to the auxiliary frame assembly, the occupied space of the silencer is saved, the silencer can also play a connecting role, the overall structure of the auxiliary frame assembly is simplified, the overall weight of the auxiliary frame assembly is reduced, the utilization rate of the auxiliary frame assembly is higher, the auxiliary frame assembly has higher integration degree, and the production and machining cost of the auxiliary frame assembly can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and in particular to a subframe assembly and a vehicle. Background Art

[0002] Traditional fuel vehicles and hybrid vehicles are equipped with engines, which provide power through air combustion, and the exhaust gas after combustion is discharged through the exhaust system. In existing vehicles, the exhaust system includes a catalytic muffler assembly, a muffler, and a rear exhaust assembly. Among them, the engine and the front catalytic muffler assembly are usually arranged above the subframe of the vehicle, and the exhaust pipe connected between the engine and the muffler needs to extend from the front cabin to the rear cabin of the vehicle. With this arrangement, the exhaust system has many parts and components, and there is a problem of complex structure occupying chassis space, which is not conducive to improving the integration of the vehicle. Utility Model Content

[0003] The purpose of the present disclosure is to provide a subframe assembly and a vehicle to solve the technical problems existing in the related art.

[0004] In order to achieve the above-mentioned objectives, a first aspect of the present disclosure provides a subframe assembly, including a subframe body and a muffler, wherein the subframe body is constructed as a frame structure with an opening, the muffler is arranged at the opening and connected to the subframe body, and the muffler and the subframe body together form an annular frame structure.

[0005] Optionally, the subframe body includes a crossbeam and two longitudinal beams, the two longitudinal beams are spaced apart along a first direction, the crossbeam is connected between first ends of the two longitudinal beams, and the muffler is connected between second ends of the two longitudinal beams.

[0006] Optionally, the muffler is detachably connected to the sub-frame body.

[0007] Optionally, the muffler includes a muffler body and two connecting parts, the two connecting parts are respectively connected to two sides of the muffler body, and the two connecting parts are respectively connected to the sub-frame body located on two sides of the opening.

[0008] Optionally, the two connecting parts are symmetrically arranged about the center line of the muffler body.

[0009] Optionally, one end of the connecting portion close to the muffler body is welded to the muffler body, and one end of the connecting portion away from the muffler body is detachably connected to the sub-frame body; or,

[0010] One end of the connecting portion close to the muffler body is detachably connected to the muffler body, and one end of the connecting portion away from the muffler body is welded to the sub-frame body.

[0011] Optionally, each of the connecting parts includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are arranged at intervals along the second direction, and the first connecting plate and the second connecting plate are respectively connected to two side walls of the sub-frame body.

[0012] Optionally, the shape of the first connecting plate matches the shape of the side wall of the sub-frame body matched therewith, and the shape of the second connecting plate matches the shape of the side wall of the sub-frame body matched therewith.

[0013] Optionally, the sub-frame assembly further includes a fastener, a first fastening hole is formed on the sub-frame body, a second fastening hole is formed on the muffler, and the fastener is locked in the first fastening hole and the second fastening hole.

[0014] Optionally, the material of the connecting portion is the same as that of the sub-frame body.

[0015] Optionally, the muffler also includes an air inlet interface and an air outlet interface, the interior of the muffler body has a muffler cavity, the air inlet interface and the air outlet interface are respectively connected to the two sides of the muffler body and communicate with the muffler cavity, and the air inlet interface and the air outlet interface and the two connecting parts are located on different sides of the muffler body.

[0016] A second aspect of the present disclosure provides a vehicle comprising the subframe assembly as described above.

[0017] Optionally, the vehicle further includes a catalytic muffler assembly, an engine assembly and a drive motor assembly, the catalytic muffler assembly is connected to the air intake interface of the muffler, and the catalytic muffler assembly, the engine assembly and the drive motor assembly are all arranged above the annular frame structure.

[0018] Optionally, the vehicle further includes a rear exhaust assembly, and the rear exhaust assembly is connected to an air outlet interface of the muffler.

[0019] Through the above technical solution, since the muffler can form a sub-frame assembly with a ring structure together with the sub-frame body, that is, the muffler is a part of the sub-frame assembly, on the one hand, there is no need to reserve a space above the sub-frame body for arranging the muffler, and there is no need to set up a related structure for fixing or avoiding the muffler above the sub-frame body, which saves the space occupied by the muffler. On the other hand, the muffler can also play a connecting role, which simplifies the overall structure of the above-mentioned sub-frame assembly, reduces the overall weight of the sub-frame assembly, and increases the utilization rate of the sub-frame assembly, so that the sub-frame assembly has a higher degree of integration and can reduce the production and processing costs of the above-mentioned sub-frame assembly.

[0020] Moreover, because the muffler is integrated into the subframe in this solution, the muffler does not occupy chassis space, so the battery pack of the hybrid vehicle and the battery pack assembly of the pure electric vehicle can be interchangeable, and the hybrid vehicle and the pure electric vehicle can be produced on the same platform.

[0021] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0023] Figure 1 is a perspective view of a subframe assembly provided by an exemplary embodiment of the present disclosure;

[0024] Figure 2 is a perspective view of a muffler of a subframe assembly provided by an exemplary embodiment of the present disclosure;

[0025] Figure 3 It is an assembly diagram between a subframe assembly, a catalytic muffler assembly, an engine assembly, a drive motor assembly, and a rear exhaust assembly provided in an exemplary embodiment of the present disclosure.

[0026] Description of Reference Numerals

[0027] 1-subframe assembly; 11-subframe body; 111-crossbeam; 112-longitudinal beam; 20-muffler; 201-second fastening hole; 21-muffler body; 22-connecting portion; 221-first connecting plate; 222-second connecting plate; 23-intake interface; 24-outlet interface; 30-fastener; 100-catalytic muffler assembly; 200-engine assembly; 300-drive motor assembly; 400-rear exhaust assembly. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In the present disclosure, unless otherwise stated, the directional words used are only for the convenience of describing the present disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation structure and operation. Therefore, they cannot be understood as limitations on the present disclosure. The terms "inside and outside" refer to the inside and outside of the corresponding structural contour.

[0030] In addition, the “first direction” and “second direction” can be found in Figure 1 In addition, it should be noted that the terms used, such as "first", "second", etc., are used to distinguish one element from another element and do not have order or importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0031] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0032] refer to Figures 1 to 3 As shown, the first aspect of the present disclosure provides a subframe assembly 1, including a subframe body 11 and a muffler 20, wherein the subframe body 11 is constructed as a frame structure with an opening, the muffler 20 is arranged at the opening and connected to the subframe body 11, and the muffler 20 and the subframe body 11 together form an annular frame structure.

[0033] Through the above technical solution, since the muffler 20 can form a sub-frame assembly 1 with an annular frame structure together with the sub-frame body 11, that is, the muffler 20 is a part of the sub-frame assembly 1. On the one hand, there is no need to reserve a space above the sub-frame body 11 for arranging the muffler 20, and there is no need to set a related structure for fixing or avoiding the muffler 20 above the sub-frame body 11, which saves the space occupied by the muffler 20. On the other hand, the muffler 20 can also play a connecting role, which simplifies the overall structure of the above-mentioned sub-frame assembly 1, reduces the overall weight of the sub-frame assembly 1, and the utilization rate of the sub-frame assembly 1 is higher, so that the sub-frame assembly 1 has a higher degree of integration, and can reduce the production and processing costs of the above-mentioned sub-frame assembly 1.

[0034] Furthermore, because the muffler 20 is integrated into the subframe in this solution, the muffler 20 does not occupy chassis space, so the battery pack of a hybrid vehicle and the battery pack assembly of a pure electric vehicle can be interchanged, and hybrid vehicles and pure electric vehicles can be produced on the same platform.

[0035] It should be noted that, while ensuring that the muffler 20 can reach a certain strength, the structure of the muffler 20 will not affect the original manufacturing process of the subframe assembly 1, and can also maintain the original strength and mode of the subframe, ensuring that the NVH (Noise, Vibration, Harshness) performance and handling stability of the subframe and other functions are not affected.

[0036] Alternatively, if Figures 1 to 3 As shown, the sub-frame body 11 may include a crossbeam 111 and two longitudinal beams 112, the two longitudinal beams 112 are arranged at intervals along the first direction, the crossbeam 111 is connected between the first ends of the two longitudinal beams 112, and the muffler 20 is connected between the second ends of the two longitudinal beams 112. That is, the muffler 20 connected between the two longitudinal beams 112 can form a sub-frame assembly 1 with a ring structure together with the crossbeam 111 and the two longitudinal beams 112, that is, the muffler 20 plays the role of another crossbeam 111 in the process of connecting the two longitudinal beams 112. In other words, the arrangement of the muffler 20 reduces one crossbeam 111 of the sub-frame, which can achieve the purpose of lightweight and cost saving, and there is no need to specially set up a space for arranging the muffler 20, which is conducive to the arrangement of chassis-related structural parts and can make the chassis layout simple and beautiful.

[0037] Alternatively, the sub-frame body 11 may also be integrally formed by injection molding or die casting.

[0038] The present disclosure does not limit the specific connection method between the muffler 20 and the sub-frame body 11, as long as it can meet the strength requirements of the above-mentioned sub-frame assembly 1. For example, in an exemplary embodiment provided by the present disclosure, the muffler 20 is detachably connected to the sub-frame body 11. In this way, on the one hand, the muffler 20 and the sub-frame body 11 can be disassembled, so as to facilitate the inspection and maintenance of the muffler 20 and / or the sub-frame body 11. On the other hand, the muffler 20 and the sub-frame body 11 can be produced and designed separately, which can reduce the design and processing costs of the above-mentioned sub-frame assembly 1.

[0039] In the embodiment in which the sub-frame body 11 includes a cross beam 111 and a longitudinal beam 112, the muffler 20 can be connected to the cross beam 111 in a detachable manner, and can also be connected to the longitudinal beam 112 in a detachable manner. The connection relationship between the muffler 20 and the sub-frame body 11 can be adaptively adjusted according to the specific assembly conditions of the chassis, and the present disclosure does not impose any restrictions on this.

[0040] Alternatively, in other embodiments provided by the present disclosure, the muffler 20 may also be connected to the sub-frame body 11 by welding, riveting or other non-detachable means, so that the muffler 20 and the sub-frame body 11 have better structural strength, thereby improving the service life of the sub-frame assembly 1. Figure 2As shown, the muffler 20 includes a muffler body 21 and two connecting parts 22, the two connecting parts 22 are respectively connected to the two sides of the muffler body 21, and the two connecting parts 22 are respectively connected to the sub-frame body 11 located on both sides of the opening. The connection parts 22 arranged on both sides of the muffler body 21 can be connected to the sub-frame body 11 located on both sides of the muffler body 21, and in the above connection process, the structure of the muffler body 21 will not be changed or modified, so the problem of changing the function of the muffler body 21 due to the change of the structure of the muffler body 21 can be avoided, and the stability of the muffler body 21 is further improved.

[0041] Alternatively, if Figure 2 As shown, the two connecting parts 22 are symmetrically arranged about the center line of the muffler body 21. The two connecting parts 22 are symmetrically arranged about the center line of the muffler body 21, so that the force on the muffler body 21 can be more uniform, thereby improving the stability of the muffler body 21 during vehicle operation.

[0042] Here, for the implementation in which the subframe body 11 includes a crossbeam 111 and a longitudinal beam 112, the muffler body 21 can be connected between the two longitudinal beams 112 via two connecting portions 22. In this way, the two connecting portions 22 are symmetrically arranged with respect to the muffler body 21, so that the gravity distribution of the connecting portions 22 in the first direction of the subframe assembly 1 can be more uniform, thereby improving the stability of the subframe assembly 1 during operation.

[0043] Specifically, the present disclosure does not limit the specific connection method between the muffler body 21 and the sub-frame body 11. For example, one end of the connection part 22 close to the muffler body 21 is welded to the muffler body 21, and one end of the connection part 22 away from the muffler body 21 is detachably connected to the sub-frame body 11. In this way, when the muffler body 21 needs to be disassembled, the ends of the two connection parts 22 on both sides of the muffler body 21 away from the muffler body 21 can be disassembled from the sub-frame body 11 respectively, so that the muffler body 20 can be disassembled from the sub-frame body 11.

[0044] Alternatively, in another embodiment provided by the present disclosure, one end of the connecting portion 22 close to the muffler body 21 is detachably connected to the muffler body 21, and one end of the connecting portion 22 away from the muffler body 21 is welded to the sub-frame body 11. In this way, when the muffler body 21 needs to be inspected or maintained, the muffler body 21 can be directly removed from the connecting portion 22, without affecting the connection between the connecting portion 22 and the sub-frame body 11.

[0045] Alternatively, if Figure 2As shown, each connection part 22 includes a first connection plate 221 and a second connection plate 222, and the first connection plate 221 and the second connection plate 222 are arranged at intervals along the second direction, and the first connection plate 221 and the second connection plate 222 are respectively connected to the two side walls of the sub-frame body 11. In this way, the first connection plate 221 and the second connection plate 222 are respectively connected to the two side walls of the sub-frame body 11, which can increase the connection area and connection thickness with the sub-frame body 11, thereby improving the connection strength between the first connection plate 221, the second connection plate 222 and the sub-frame body 11. In addition, the arrangement of the first connection plate 221 and the second connection plate 222 can also limit and position the sub-frame body 11 located between the first connection plate 221 and the second connection plate 222, making it easier to assemble the muffler body 21.

[0046] It should be noted that the first connecting plate 221 and the second connecting plate 222 can be respectively connected to two adjacent side walls of the sub-frame body 11 (that is, the cross-section of the first connecting plate 221 and the second connecting plate 222 is formed into an L shape), and the first connecting plate 221 and the second connecting plate 222 can also be respectively connected to two opposite side walls of the sub-frame body 11 (in this case, the first connecting plate 221 and the second connecting plate 222 are opposite and spaced apart), and the present disclosure does not limit this.

[0047] The first direction mentioned above may be a width direction of the vehicle, and the second direction may be a height direction of the vehicle.

[0048] Alternatively, if Figures 1 to 3As shown, the shape of the first connecting plate 221 matches the shape of the side wall of the sub-frame body 11 matched therewith, so that the first connecting plate 221 is fitted with the side wall of the sub-frame body 11, and the shape of the second connecting plate 222 matches the shape of the side wall of the sub-frame body 11 matched therewith, so that the second connecting plate 222 is fitted with the side wall of the sub-frame body 11. That is to say, the outer contour of the first connecting plate 221 and the outer contour of the second connecting plate 222 are matched with the outer contour of the side wall of the sub-frame body 11 respectively. In this way, when the first connecting plate 221 and the second connecting plate 222 are connected to the sub-frame body 11, the first connecting plate 221 and the second connecting plate 222 can be tightly fitted on the two side walls of the sub-frame body 11. On the one hand, the connection strength between the first connecting plate 221, the second connecting plate 222 and the sub-frame body 11 can be improved. On the other hand, it can also prevent rainwater, sewage, etc. from entering the gap between the first connecting plate 221 and the side wall of the sub-frame body 11 and / or the gap between the second connecting plate 222 and the side wall of the sub-frame body 11, causing corrosion and oxidation problems to the first connecting plate 221, the second connecting plate 222 and the sub-frame body 11, thereby improving the service life of the first connecting plate 221, the second connecting plate 222 and the sub-frame body 11.

[0049] In an exemplary embodiment provided by the present disclosure, optionally, as Figure 2 As shown, the sub-frame assembly 1 may further include a fastener 30, a first fastening hole is formed on the sub-frame body 11, a second fastening hole 201 is formed on the muffler 20, and the fastener 30 is locked in the first fastening hole (not shown) and the second fastening hole 201. When the muffler 20 and the sub-frame body 11 need to be fastened, the fastener 30 may be sequentially connected and locked in the first fastening hole and the second fastening hole 201, so that the fastening connection between the muffler 20 and the sub-frame body 11 can be achieved, which is convenient for operators to operate.

[0050] It should be noted that the fastener 30 may be a fastening bolt or a fastening screw. For the embodiment in which the fastener 30 is a fastening screw, the first fastening hole and the second fastening hole 201 may both be formed as threaded holes. In this way, the fastening screw may be threadedly connected to the first fastening hole and the second fastening hole 201 while being inserted into the first fastening hole and the second fastening hole 201, thereby further improving the connection strength between the muffler 20 and the sub-frame body 11.

[0051] In another exemplary embodiment provided by the present disclosure, the muffler 20 and the sub-frame body 11 may also be detachably connected by means of a snap connection.

[0052] Optionally, the material of the connection part 22 is the same as that of the sub-frame body 11. On the one hand, the material of the connection part 22 is the same as that of the sub-frame body 11, which facilitates the connection (such as welding) between the two. On the other hand, after the connection part 22 is connected to the sub-frame body 11, the connection part 22 and the sub-frame body 11 can have better strength and structural consistency.

[0053] Alternatively, if Figure 2 As shown, the muffler 20 may also include an air inlet interface 23 and an air outlet interface 24, the interior of the muffler body 21 has a muffler cavity, the air inlet interface 23 and the air outlet interface 24 are respectively connected to both sides of the muffler body 21 and communicate with the muffler cavity, and the air inlet interface 23 and the air outlet interface 24 are located on different sides of the muffler body 21 from the two connecting parts 22. The air inlet interface 23 and the air outlet interface 24 of the muffler 20 are arranged at positions on different sides from the two connecting parts 22, so that interference or interference between the air inlet interface 23, the air outlet interface 24 and the two connecting parts 22 can be avoided, providing a larger layout space for the air inlet and outlet pipes of the muffler 20.

[0054] The second aspect of the present disclosure provides a vehicle, comprising the above subframe assembly 1. The vehicle has all the beneficial effects of the above subframe assembly 1, which is not limited by the present disclosure.

[0055] In addition, the present disclosure does not limit the specific type of the above-mentioned vehicle, which may be a pure electric vehicle, a hybrid vehicle, or a fuel vehicle.

[0056] Alternatively, if Figure 3 As shown, the vehicle further includes a catalytic muffler assembly 100, an engine assembly 200 and a drive motor assembly 300. The catalytic muffler assembly 100 is connected to the air inlet interface 23 of the muffler 20. The catalytic muffler assembly 100, the engine assembly 200 and the drive motor assembly 300 are all arranged above the annular frame structure. The air outlet of the engine assembly 200 is connected to the air inlet of the catalytic muffler assembly 100, and the air outlet of the catalytic muffler assembly 100 is connected to the air inlet interface 23 of the muffler 20. Figure 3 As described above, precisely because the above-mentioned muffler 20 can be integrated on the subframe, the gas in the catalytic muffler assembly 100 can be directly transferred to the rear-end exhaust assembly through the muffler 20, that is, the pipeline connected between the catalytic muffler assembly 100 and the rear-end exhaust assembly does not need to be routed from above or below the crossbeam 111, thereby reducing the occupation of the space above or below the subframe assembly 1 by this part of the pipeline, thereby facilitating the arrangement of the above-mentioned catalytic muffler assembly 100, the engine assembly 200 and the drive motor assembly 300.

[0057] It should be noted that the drive motor assembly 300 can be arranged as a single motor assembly or a bilaterally symmetrical dual motor assembly. When the drive motor is arranged as a dual motor assembly, the wheels on both sides can be driven separately. When the drive motor assembly 300 is arranged below the engine assembly 200, the angle of the transmission shaft is within the allowable angle range.

[0058] Alternatively, if Figure 3 As shown, the vehicle may further include a rear exhaust assembly 400, which is connected to the outlet port 24 of the muffler 20. In this way, the exhaust gas enters the catalytic muffler assembly 100 and the muffler 20 in sequence from the outlet port of the engine assembly 200, and is discharged from the outlet port 24 through the rear exhaust assembly 400.

[0059] The present disclosure does not limit the connection method between the above-mentioned rear-end exhaust assembly 400 and the air outlet interface 24 of the muffler 20. The rear-end exhaust assembly 400 and the air outlet interface 24 of the muffler 20 can be connected in a detachable manner or a non-detachable manner. For example, with respect to the method of connecting the rear-end exhaust assembly 400 and the air outlet interface 24 of the muffler 20 in a detachable manner, in an embodiment provided in the present disclosure, the rear-end exhaust assembly 400 and the air outlet interface 24 of the muffler 20 can be connected by a flange.

[0060] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0062] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A subframe assembly, characterized in that: The vehicle comprises a sub-frame body and a muffler, wherein the sub-frame body is constructed as a frame structure with an opening, the muffler is arranged at the opening and connected to the sub-frame body, and the muffler and the sub-frame body together form an annular frame structure.

2. The subframe assembly according to claim 1, characterized in that: The sub-frame body comprises a cross beam and two longitudinal beams, the two longitudinal beams are arranged at intervals along a first direction, the cross beam is connected between first ends of the two longitudinal beams, and the muffler is connected between second ends of the two longitudinal beams.

3. The subframe assembly according to claim 2, characterized in that: The muffler is detachably connected to the auxiliary frame body.

4. The subframe assembly according to any one of claims 1 to 3, characterized in that: The muffler comprises a muffler body and two connecting parts, wherein the two connecting parts are respectively connected to two sides of the muffler body, and the two connecting parts are respectively connected to the sub-frame body located at two sides of the opening.

5. The subframe assembly according to claim 4, characterized in that: The two connecting parts are symmetrically arranged about the center line of the muffler body.

6. The subframe assembly according to claim 4, characterized in that: One end of the connecting portion close to the muffler body is welded to the muffler body, and one end of the connecting portion away from the muffler body is detachably connected to the sub-frame body; or, One end of the connecting portion close to the muffler body is detachably connected to the muffler body, and one end of the connecting portion away from the muffler body is welded to the sub-frame body.

7. The subframe assembly according to claim 4, characterized in that: Each of the connecting parts includes a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are arranged at intervals along the second direction, and the first connecting plate and the second connecting plate are respectively connected to two side walls of the sub-frame body.

8. The subframe assembly according to claim 7, characterized in that: The shape of the first connecting plate matches the shape of the side wall of the sub-frame body matched therewith, and the shape of the second connecting plate matches the shape of the side wall of the sub-frame body matched therewith.

9. The subframe assembly according to claim 3, characterized in that: The sub-frame assembly further includes a fastener. A first fastening hole is formed on the sub-frame body, a second fastening hole is formed on the muffler, and the fastener is locked in the first fastening hole and the second fastening hole.

10. The subframe assembly according to claim 5, characterized in that: The material of the connecting portion is the same as that of the sub-frame body.

11. The subframe assembly according to claim 5, characterized in that: The muffler also includes an air inlet interface and an air outlet interface. The interior of the muffler body has a muffler cavity. The air inlet interface and the air outlet interface are respectively connected to the two sides of the muffler body and communicate with the muffler cavity, and the air inlet interface and the air outlet interface are located on different sides of the muffler body from the two connecting parts.

12. A vehicle, characterized in that: The invention comprises the subframe assembly according to any one of claims 1 to 11.

13. The vehicle according to claim 12, characterized in that The vehicle also includes a catalytic muffler assembly, an engine assembly and a drive motor assembly. The catalytic muffler assembly is connected to the air intake interface of the muffler. The catalytic muffler assembly, the engine assembly and the drive motor assembly are all arranged above the annular frame structure.

14. The vehicle according to claim 13, characterized in that The vehicle also includes a rear exhaust assembly, which is connected to the air outlet interface of the muffler.

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