Sub-frame assembly and vehicle

Abstract

A sub-frame assembly, comprising: a sub-frame body (11) and a muffler (20). The sub-frame body (11) is configured to be a frame structure having an opening (4), the muffler (20) is provided at the opening (4) and connected to the sub-frame body (11), and the muffler (20) and the sub-frame body (11) jointly define a ring-shaped frame structure. Further disclosed is a vehicle (3). The muffler (20) is integrated on a sub-frame, and does not occupy the space of a chassis, such that the integration level of the vehicle (3) is improved.

Description

Sub-frame assembly and vehicle

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to the Chinese patent application No. 202421250774.5, filed on May 31, 2024, and entitled “Sub-frame assembly and vehicle”, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of vehicles, in particular, to a sub-frame assembly and a vehicle. BACKGROUND

[0004] In the existing vehicle, the exhaust system includes a catalytic muffler assembly, a muffler and a rear exhaust assembly, wherein the engine and the front catalytic assembly are usually arranged above the sub-frame of the vehicle, and the exhaust pipe connecting between the engine and the muffler needs to extend from the front compartment to the rear compartment of the vehicle. With this arrangement, the exhaust system has many parts, and the structure is complex and occupies a lot of chassis space, which is not conducive to improving the integration of the vehicle. SUMMARY

[0005] The purpose of the present disclosure is to provide a sub-frame assembly and a vehicle to solve the technical problems existing in the related art.

[0006] To achieve the above purpose, the first aspect of the present disclosure provides a sub-frame assembly, comprising:

[0007] a sub-frame body configured as a frame structure with an opening; and

[0008] a muffler arranged at the opening and connected with the sub-frame body, the muffler and the sub-frame body together forming a ring-shaped frame structure.

[0009] Optionally, the sub-frame body comprises a cross beam and two longitudinal beams, the two longitudinal beams are arranged in a first direction and spaced apart, the cross beam is connected between the first ends of the two longitudinal beams, and the muffler is connected between the second ends of the two longitudinal beams.

[0010] Optionally, the muffler is detachably connected with the sub-frame body.

[0011] Optionally, the muffler comprises a muffler body and two connecting portions, the two connecting portions are respectively connected to the two sides of the muffler body, and the two connecting portions are respectively connected with the sub-frame body located on the two sides of the opening.

[0012] Optionally, the two connecting portions are symmetrically arranged about the center line of the muffler body.

[0013] Optionally, the connecting portion is detachably connected to the muffler body at one end close to the muffler body, and is welded to the auxiliary frame body at an end away from the muffler body.

[0014] The connecting portion is detachably connected to the muffler body at one end close to the muffler body, and is welded to the auxiliary frame body at an end away from the muffler body.

[0015] Optionally, each of the connecting portions comprises a first connecting plate and a second connecting plate, the first connecting plate and the second connecting plate are arranged in a second direction and are connected to two side walls of the auxiliary frame body, respectively.

[0016] Optionally, the shape of the first connecting plate matches the shape of the side wall of the auxiliary frame body, and the shape of the second connecting plate matches the shape of the side wall of the auxiliary frame body.

[0017] Optionally, the auxiliary frame assembly further comprises a fastener, a first fastening hole is formed on the auxiliary 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.

[0018] Optionally, the material of the connecting portion is the same as that of the auxiliary frame body.

[0019] Optionally, the muffler further comprises an air inlet interface and an air outlet interface, the muffler body has a muffling cavity inside, the air inlet interface and the air outlet interface are connected to two sides of the muffler body and communicate with the muffling cavity, and the air inlet interface and the air outlet interface are located on different sides of the muffler body from the two connecting portions.

[0020] The second aspect of the present disclosure provides a vehicle comprising the auxiliary frame assembly as described above.

[0021] Optionally, the vehicle further comprises a catalytic muffling assembly, an engine assembly, and a driving motor assembly, the catalytic muffling assembly communicates with the air inlet interface of the muffler, and the catalytic muffling assembly, the engine assembly, and the driving motor assembly are all arranged above the annular frame structure.

[0022] Optionally, the vehicle further comprises a rear exhaust assembly, and the rear exhaust assembly communicates with the air outlet interface of the muffler.

[0023] By the above technical scheme, since the muffler can jointly form a ring structure with the auxiliary frame body to form the auxiliary frame assembly, that is, the muffler is part of the auxiliary frame assembly, on the one hand, no space is reserved above the auxiliary frame body for arranging the muffler, and no related structure is arranged above the auxiliary frame body for fixing or avoiding the muffler, thereby saving the occupied space of the muffler, on the other hand, the muffler can also play a connecting role, thereby simplifying the overall structure of the auxiliary frame assembly, reducing the overall weight of the auxiliary frame assembly, improving the utilization rate of the auxiliary frame assembly, increasing the integration of the auxiliary frame assembly, and reducing the production and processing cost of the auxiliary frame assembly.

[0024] Moreover, since the muffler is integrated on the auxiliary frame in the present scheme, the muffler does not occupy the chassis space, and therefore, the battery pack of the hybrid vehicle and the battery pack assembly of the pure electric vehicle can be universally exchanged, and the hybrid vehicle and the pure electric vehicle can be produced on the same platform.

[0025] Other features and advantages of the present disclosure will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings are included to provide a further understanding of the present disclosure and constitute a part of the specification, and are used together with the following specific embodiments to explain the present disclosure, but do not constitute a limitation on the present disclosure. In the drawings:

[0027] FIG. 1 is a perspective view of an auxiliary frame assembly according to an exemplary embodiment of the present disclosure.

[0028] FIG. 2 is a perspective view of a muffler of an auxiliary frame assembly according to an exemplary embodiment of the present disclosure.

[0029] FIG. 3 is an assembly view of an auxiliary frame assembly, a catalytic muffler assembly, an engine assembly, a drive motor assembly, and a rear exhaust assembly according to an exemplary embodiment of the present disclosure.

[0030] FIG. 4 is a structural block diagram of a distribution box according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0031] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0032] In the present disclosure, the orientation words used without the opposite description are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, and a specific orientation configuration and operation, and therefore cannot be understood as a limitation on the present disclosure. The terms "inner, outer" refer to the inner and outer of the corresponding structure profile.

[0033] In addition, the "first direction" and the "second direction" can refer to the first direction and the second direction shown in FIG. 1. In addition, it should be noted that the terms such as "first", "second" used are for distinguishing one element from another element, and do not have sequential or important meaning. In addition, in the description referring to the drawings, the same reference signs in different drawings represent the same element.

[0034] In the description of the present disclosure, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "connected", "linked", "mounted" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0035] Referring to FIGS. 1-3, the first aspect of the present disclosure provides a subframe assembly 1, comprising a subframe body 11 and a muffler 20, the subframe body 11 is configured as a frame structure with an opening 4, the muffler 20 is arranged at the opening 4 and connected with the subframe body 11, and the muffler 20 and the subframe body 11 jointly enclose a ring-shaped frame structure.

[0036] Through the above technical solution, since the muffler 20 can jointly enclose the ring-shaped frame structure of the subframe assembly 1 with the subframe body 11, that is, the muffler 20 is part of the subframe assembly 1, on the one hand, there is no need to reserve space above the subframe body 11 for arranging the muffler 20, and there is no need to set relevant structures above the subframe body 11 for fixing or avoiding the muffler 20, saving the occupied space of the muffler 20, on the other hand, the muffler 20 can also play a connecting role, simplifying the overall structure of the subframe assembly 1 and reducing the overall weight of the subframe assembly 1, the utilization rate of the subframe assembly 1 is higher, so that the subframe assembly 1 has higher integration, and the production and processing cost of the subframe assembly 1 can be reduced.

[0037] Moreover, it is because the muffler 20 is integrated on the subframe in the present solution, and the muffler 20 does not occupy the chassis space, so the battery pack assembly of the hybrid power vehicle and the battery pack assembly of the pure electric vehicle can be universally exchanged, and the hybrid power vehicle and the pure electric vehicle can be produced on the same platform.

[0038] It should be noted that, in the case of 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 the original strength and modal of the subframe can be maintained, so as to ensure that the NVH (Noise, Vibration, Harshness) performance and steering stability of the subframe are not affected.

[0039] Optionally, as shown in FIGS. 1-3, the subframe body 11 can include a cross beam 111 and two longitudinal beams 112, the two longitudinal beams 112 are spaced apart along the first direction, the cross beam 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 ring-shaped subframe assembly 1 together with the cross beam 111 and the two longitudinal beams 112, that is, the muffler 20 plays the role of another cross beam 111 in the process of connecting the two longitudinal beams 112, in other words, the arrangement of the muffler 20 reduces one cross beam 111 of the subframe, which can achieve the purposes of lightweight and cost saving, and also does not need to specially arrange space for arranging the muffler 20, which is beneficial to the arrangement of the chassis related structural members, and can make the chassis arrangement simple and beautiful.

[0040] Alternatively, the above-mentioned subframe body 11 can also be integrally formed by injection molding or die casting.

[0041] The present disclosure does not limit the specific connection mode between the muffler 20 and the subframe body 11, as long as the strength requirement of the above-mentioned subframe assembly 1 can be met, for example, in an exemplary embodiment provided by the present disclosure, the muffler 20 and the subframe body 11 are detachably connected. In this way, on the one hand, the muffler 20 and the subframe body 11 can be detached, thereby facilitating the maintenance and repair of the muffler 20 and / or the subframe body 11, and on the other hand, the above-mentioned muffler 20 and subframe body 11 can be produced and designed separately, which can reduce the design and processing cost of the above-mentioned subframe assembly 1.

[0042] For the embodiment in which the subframe body 11 includes the cross beam 111 and the longitudinal beam 112, the muffler 20 can be connected to the cross beam 111 in a detachable manner, or can be connected to the longitudinal beam 112 in a detachable manner, and the connection relationship between the muffler 20 and the subframe body 11 can be adaptively adjusted according to the specific assembly of the chassis, and the present disclosure does not limit this.

[0043] Alternatively, in other embodiments provided by the present disclosure, the muffler 20 can also be connected to the subframe body 11 in a non-detachable manner such as welding, riveting, etc., so that the muffler 20 and the subframe body 11 have better structural strength, thereby prolonging the service life of the subframe assembly 1. Alternatively, as shown in FIG. 2, the muffler 20 includes a muffler body 21 and two connecting portions 22, the two connecting portions 22 are respectively connected to the two sides of the muffler body 21, and the two connecting portions 22 are respectively connected to the subframe body 11 located on the two sides of the opening 4. The connecting portions 22 provided on the two sides of the muffler body 21 can be connected to the subframe body 11 located on the two sides of the muffler body 21, and during the above connection process, the structure of the muffler body 21 will not be changed or modified, thereby avoiding the problem that the change of the structure of the muffler body 21 affects the change of the function of the muffler body 21, and further improving the stability of the muffler body 21.

[0044] Alternatively, as shown in FIG. 2, the two connecting portions 22 are symmetrically arranged about the center line of the muffler body 21. The two connecting portions 22 are symmetrically arranged about the center line of the muffler body 21, so that the stress of the muffler body 21 is more uniform, thereby improving the stability of the muffler body 21 during the operation of the vehicle 3.

[0045] Here, for the embodiment in which the subframe body 11 includes the cross beam 111 and the longitudinal beam 112, the muffler body 21 can be connected between the two longitudinal beams 112 through the two connecting portions 22, so that the two connecting portions 22 are symmetrically arranged about the muffler body 21, which can make the gravity distribution of the connecting portion 22 in the first direction of the subframe assembly 1 more uniform, thereby improving the stability of the subframe assembly 1 during operation.

[0046] Specifically, the present disclosure does not limit the specific connection mode between the muffler body 21 and the subframe body 11, for example, one end of the connecting portion 22 close to the muffler body 21 is welded to the muffler body 21, and the other end of the connecting portion 22 away from the muffler body 21 is detachably connected to the subframe body 11. In this way, when the muffler body 21 needs to be disassembled, the other end of the two connecting portions 22 away from the muffler body 21 located on the two sides of the muffler body 21 can be respectively detached from the subframe body 11, thereby realizing the disassembly of the muffler body 20 from the subframe body 11.

[0047] Alternatively, in another way provided by the present disclosure, the connecting portion 22 is detachably connected to the muffler body 21 at one end thereof, and is welded to the auxiliary frame body 11 at the other end thereof. In this way, when the muffler body 21 needs to be repaired or maintained, the muffler body 21 can be directly detached from the connecting portion 22, without affecting the connection between the connecting portion 22 and the auxiliary frame body 11.

[0048] Optionally, as shown in FIG. 2, each connecting portion 22 includes a first connecting plate 221 and a second connecting plate 222, the first connecting plate 221 and the second connecting plate 222 are spaced apart in the second direction, and the first connecting plate 221 and the second connecting plate 222 are respectively connected to the two side walls of the auxiliary frame body 11. In this way, the first connecting plate 221 and the second connecting plate 222 are respectively connected to the two side walls of the auxiliary frame body 11, which can increase the connection area and the connection thickness between the first connecting plate 221, the second connecting plate 222 and the auxiliary frame body 11, thereby improving the connection strength between the first connecting plate 221, the second connecting plate 222 and the auxiliary frame body 11. In addition, the first connecting plate 221 and the second connecting plate 222 can also limit and position the auxiliary frame body 11 between the first connecting plate 221 and the second connecting plate 222, which is more convenient for the assembly of the muffler body 21.

[0049] 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 auxiliary frame body 11 (i.e., the cross section of the first connecting plate 221 and the second connecting plate 222 is formed in an L shape), or the first connecting plate 221 and the second connecting plate 222 can be respectively connected to two opposite side walls of the auxiliary 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.

[0050] The first direction mentioned above can be the width direction of the vehicle 3, and the second direction can be the height direction of the vehicle 3.

[0051] Optionally, as shown in FIGS. 1-3, the shape of the first connecting plate 221 matches the shape of the side wall of the auxiliary frame body 11, so that the first connecting plate 221 is arranged in close contact with the side wall of the auxiliary frame body 11. The shape of the second connecting plate 222 matches the shape of the side wall of the auxiliary frame body 11, so that the second connecting plate 222 is arranged in close contact with the side wall of the auxiliary frame body 11. That is, the outer contour of the first connecting plate 221 and the outer contour of the second connecting plate 222 respectively match the outer contour of the side wall of the auxiliary frame body 11, so that when the first connecting plate 221 and the second connecting plate 222 are connected to the auxiliary frame body 11, the first connecting plate 221 and the second connecting plate 222 can be tightly attached to the two side walls of the auxiliary frame body 11. On the one hand, the connection strength between the first connecting plate 221, the second connecting plate 222 and the auxiliary frame body 11 can be improved. On the other hand, it can also avoid rainwater, sewage and the like from entering the gap between the first connecting plate 221 and the side wall of the auxiliary frame body 11 and / or the gap between the second connecting plate 222 and the side wall of the auxiliary frame body 11, thereby preventing corrosion and oxidation of the first connecting plate 221, the second connecting plate 222 and the auxiliary frame body 11, and further improving the service life of the first connecting plate 221, the second connecting plate 222 and the auxiliary frame body 11.

[0052] In an exemplary embodiment provided by the present disclosure, as shown in FIG. 2, the auxiliary frame assembly 1 can further include a fastener 30. The first fastening hole 110 is formed on the auxiliary frame body 11, and the second fastening hole 201 is formed on the muffler 20. The fastener 30 is locked in the first fastening hole 110 and the second fastening hole 201. When it is necessary to fasten the muffler 20 and the auxiliary frame body 11, the fastener 30 can be connected and locked in the first fastening hole 110 and the second fastening hole 201 in sequence, so as to achieve the fastening connection between the muffler 20 and the auxiliary frame body 11, and facilitate the operation of the operator.

[0053] It should be noted that the above-mentioned fastener 30 can be a fastening bolt or a fastening screw. For the embodiment in which the fastener 30 is a fastening screw, the above-mentioned first fastening hole 110 and second fastening hole 201 can be formed as threaded holes. In this way, the fastening screw can be threadedly connected in the first fastening hole 110 and the second fastening hole 201 while being arranged in the first fastening hole 110 and the second fastening hole 201, thereby further improving the connection strength of the muffler 20 and the auxiliary frame body 11.

[0054] In another exemplary embodiment provided by the present disclosure, the muffler 20 and the auxiliary frame body 11 can also be detachably connected by clamping.

[0055] Optionally, the material of the connecting portion 22 is the same as that of the auxiliary frame body 11. On the one hand, the same material of the connecting portion 22 and the auxiliary frame body 11 facilitates the connecting (such as welding) operation between the two, and on the other hand, after the connecting portion 22 is connected to the auxiliary frame body 11, the connecting portion 22 and the auxiliary frame body 11 have better strength and structural consistency.

[0056] Optionally, as shown in FIG. 2, the muffler 20 can further include an air inlet interface 23 and an air outlet interface 24, the muffler body 21 has a muffling cavity 210 inside, the air inlet interface 23 and the air outlet interface 24 are connected to the two sides of the muffler body 21 and communicate with the muffling cavity 210, 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 portions 22. The air inlet interface 23 and the air outlet interface 24 of the muffler 20 are arranged on different sides from the two connecting portions 22, so that interference or interference between the air inlet interface 23, the air outlet interface 24 and the two connecting portions 22 can be avoided, and more space for arranging the air inlet and outlet pipelines of the muffler 20 is provided.

[0057] As shown in FIG. 4, the second aspect of the present disclosure provides a vehicle 3 comprising the auxiliary frame assembly 1 as above. The vehicle 3 has all the beneficial effects of the auxiliary frame assembly 1 described above, and the present disclosure does not limit this.

[0058] In addition, the present disclosure does not limit the specific type of the vehicle 3 mentioned above, which can be a pure electric vehicle, a hybrid vehicle or a fuel vehicle.

[0059] Optionally, as shown in FIG. 3, the vehicle 3 further comprises a catalytic muffler assembly 100, an engine assembly 200 and a drive motor assembly 300, the catalytic muffler assembly 100 communicates with the air inlet interface 23 of the muffler 20, and the catalytic muffler assembly 100, the engine assembly 200 and the drive motor assembly 300 are arranged above the annular frame structure. Among them, the air outlet of the engine assembly 200 communicates with the air inlet of the catalytic muffler assembly 100, and the air outlet of the catalytic muffler assembly 100 communicates with the air inlet interface 23 of the muffler 20. As shown in FIG. 3, since the above-mentioned muffler 20 can be integrated on the auxiliary frame, the gas in the catalytic muffler assembly 100 can be directly transmitted 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 arranged from above or below the cross beam 111, thereby reducing the occupation of the part of the pipeline to the space above or below the auxiliary frame assembly 1, and facilitating the arrangement of the above-mentioned catalytic muffler assembly 100, engine assembly 200 and drive motor assembly 300.

[0060] It should be noted that the driving motor assembly 300 described above can be arranged as a single motor assembly, or a left-right symmetrical double motor assembly. When the driving motor is arranged as a double motor assembly, the double-sided wheels can be driven individually. When the driving motor assembly 300 is arranged below the engine assembly 200, the included angle of the transmission shaft is within the allowable angle range.

[0061] Optionally, as shown in FIG. 3, the vehicle 3 can further include a rear exhaust assembly 400, which is in communication with the gas outlet 24 of the muffler 20. In this way, the exhaust gas from the gas outlet of the engine assembly 200 enters the catalytic muffler assembly 100, the muffler 20 in sequence, and is discharged from the gas outlet 24 through the rear exhaust assembly 400.

[0062] The present disclosure does not limit the connection mode between the rear exhaust assembly 400 and the gas outlet 24 of the muffler 20. The rear exhaust assembly 400 and the gas outlet 24 of the muffler 20 can be connected by a detachable connection mode or a non-detachable mode. For example, for the rear exhaust assembly 400 and the gas outlet 24 of the muffler 20 connected by a detachable mode, in an embodiment provided by the present disclosure, the rear exhaust assembly 400 and the gas outlet 24 of the muffler 20 can be connected by a flange.

[0063] The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details in the above-described embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

[0064] In addition, it should be noted that each specific technical feature described in the above-described specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0065] Furthermore, various different embodiments of the present disclosure can also be combined in any appropriate manner, as long as they do not deviate from the idea of the present disclosure, and they should also be considered as disclosed by the present disclosure.

Claims

1. A subframe assembly (1), characterized in that, include: The subframe body (11) is constructed as a frame structure with an opening (4); as well as A muffler (20) is provided at the opening (4) and connected to the subframe body (11). The muffler (20) and the subframe body (11) together form a ring frame structure.

2. The subframe assembly (1) according to claim 1, characterized in that, The subframe body (11) includes a crossbeam (111) and two longitudinal beams (112), the two longitudinal beams (112) are spaced apart along a 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).

3. The subframe assembly (1) according to claim 2, characterized in that, The muffler (20) is detachably connected to the subframe body (11).

4. The subframe assembly (1) according to any one of claims 1-3, characterized in that, The muffler (20) includes a muffler body (21) and two connecting parts (22). The two connecting parts (22) are respectively connected to both sides of the muffler body (21) and respectively connected to the subframe body (11) located on both sides of the opening (4).

5. The subframe assembly (1) according to claim 4, characterized in that, The two connecting parts (22) are symmetrically arranged about the center line of the muffler body (21).

6. The subframe assembly (1) according to claim 4 or 5, characterized in that, The end of the connecting part (22) near the muffler body (21) is welded to the muffler body (21), and the end of the connecting part (22) away from the muffler body (21) is detachably connected to the subframe body (11); or, The end of the connecting part (22) near the muffler body (21) is detachably connected to the muffler body (21), and the end of the connecting part (22) away from the muffler body (21) is welded to the subframe body (11).

7. The subframe assembly (1) according to any one of claims 4-6, characterized in that, Each of the connecting parts (22) includes a first connecting plate (221) and a second connecting plate (222), the first connecting plate (221) and the second connecting plate (222) are spaced apart along a second direction, and the first connecting plate (221) and the second connecting plate (222) are respectively connected to the two side walls of the subframe body (11).

8. The subframe assembly (1) according to claim 7, characterized in that, The shape of the first connecting plate (221) matches the shape of the side wall of the subframe body (11) that it cooperates with, and the shape of the second connecting plate (222) matches the shape of the side wall of the subframe body (11) that it cooperates with.

9. The subframe assembly (1) according to claim 3, characterized in that, The subframe assembly (1) also includes a fastener (30), a first fastening hole (110) is formed on the subframe body (11), a second fastening hole (201) is formed on the muffler (20), and the fastener (30) is locked in the first fastening hole (110) and the second fastening hole (201).

10. The subframe assembly (1) according to any one of claims 4-8, characterized in that, The material of the connecting part (22) is the same as that of the subframe body (11).

11. The subframe assembly (1) according to any one of claims 4-8, characterized in that, The muffler (20) further includes an air inlet (23) and an air outlet (24). The muffler body (21) has a silencing cavity (210) inside. The air inlet (23) and the air outlet (24) are respectively connected to the two sides of the muffler body (21) and communicate with the silencing cavity (210). The air inlet (23) and the air outlet (24) are located on different sides of the muffler body (21) with the two connecting parts (22).

12. A vehicle (3), characterized in that, Includes the subframe assembly (1) according to any one of claims 1-11.

13. The vehicle (3) according to claim 12, characterized in that, The vehicle (3) also 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 intake interface (23) of the muffler (20). The catalytic muffler assembly (100), the engine assembly (200), and the drive motor assembly (300) are all located above the annular frame structure.

14. The vehicle (3) according to claim 13, characterized in that, The vehicle (3) also includes a rear exhaust assembly (400) connected to the exhaust port (24) of the muffler (20).

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