Rear auxiliary frame assembly and vehicle

Abstract

The utility model discloses a rear subframe assembly and a vehicle, an exhaust passage is formed in the rear subframe assembly, the exhaust passage is provided with an air inlet and an air outlet, a noise reduction structure is arranged in the exhaust passage, and the exhaust passage is suitable for being communicated with an exhaust pipe. According to the rear auxiliary frame assembly, the exhaust channel is arranged in the rear auxiliary frame assembly, and the silencing structure is arranged in the exhaust channel, so that the rear auxiliary frame assembly can replace a rear silencer in the related technology to save the installation space occupied by the rear silencer; therefore, a larger installation space can be reserved for structures such as a trunk and a rear suspension installed on the rear portion of the vehicle, and the utilization rate of the bottom space of the vehicle is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile, especially to a rear subframe assembly and vehicle. BACKGROUND

[0002] In the process of vehicle driving, the exhaust gas generated by the engine needs to be discharged to the tail of the vehicle through the exhaust pipe, therefore, the rear end of the exhaust pipe needs to be extended to the tail of the vehicle, and the tail of the exhaust pipe is usually provided with a rear silencer, wherein the volume of the rear silencer is about 10 times of the engine displacement, for example, a 1.5L displacement engine needs to be configured with a rear silencer of about 15L, and the rear silencer occupies a large volume and occupies the rear trunk and rear suspension space. Therefore, it needs to be improved. SUMMARY

[0003] The utility model provides a rear subframe assembly which has the advantages of being capable of replacing the traditional rear silencer to realize exhaust silencing function and improve the utilization rate of the bottom space of the vehicle.

[0004] According to the rear subframe assembly of the first aspect of the utility model, the exhaust passage is formed in the rear subframe assembly, the exhaust passage has an air inlet and an exhaust outlet, and the exhaust passage is provided with a silencing structure, and the exhaust passage is adapted to communicate with the exhaust pipe.

[0005] According to the rear subframe assembly of the first aspect of the utility model, the exhaust passage is arranged in the rear subframe assembly, and the silencing structure is arranged in the exhaust passage, so that the rear subframe assembly can replace the rear silencer in the related art to save the installation space occupied by the rear silencer, thereby reserving a larger installation space for the structures such as the trunk and the rear suspension installed at the rear of the vehicle, to improve the utilization rate of the bottom space of the vehicle.

[0006] According to some embodiments of the utility model, the exhaust passage is formed in the longitudinal beam of the rear subframe assembly.

[0007] According to some embodiments of the utility model, the air inlet is located at the front end of the longitudinal beam, the exhaust outlet is located at the rear end of the longitudinal beam, and / or each exhaust passage has at least two exhaust outlets, and the at least two exhaust outlets are distributed on the left and right sides of the longitudinal beam.

[0008] According to some embodiments of the utility model, the silencing structure is provided with a plurality of structures arranged in the front-rear direction.

[0009] According to some embodiments of the utility model, the interval between any two adjacent silencing structures is the same.

[0010] According to some embodiments of the present application, the sound attenuation structure is formed with a sound attenuation hole extending through in the front-rear direction, the sound attenuation hole is in a long strip shape extending in a first direction, and the first direction is perpendicular to the front-rear direction.

[0011] According to some embodiments of the present application, the sound attenuation structure is formed with a sound attenuation hole extending through in the front-rear direction, the sound attenuation hole is in a long strip shape extending in a first direction, and the first direction is perpendicular to the front-rear direction.

[0012] The present application provides a vehicle.

[0013] According to the vehicle of the second aspect of the present application, the exhaust pipe is connected to the front side of the rear subframe assembly, and the exhaust pipe is in communication with the exhaust passage through the air inlet.

[0014] According to the vehicle of the second aspect of the present application, the exhaust passage is arranged in the rear subframe assembly, and the sound attenuation structure is arranged in the exhaust passage, so that the rear subframe assembly can replace the rear silencer in the related art to save the installation space occupied by the rear silencer, thereby reserving more installation space for the structures such as the trunk and the rear suspension arranged at the rear of the vehicle, to improve the utilization rate of the bottom space of the vehicle.

[0015] According to some embodiments of the present application, the exhaust pipe includes a connecting pipe and two branch pipes connected to the downstream side of the connecting pipe, and the rear subframe assembly includes two longitudinal beams, the exhaust passage is formed in each of the two longitudinal beams, and the connecting pipe is in communication with the two exhaust passages through the two branch pipes.

[0016] According to some embodiments of the present application, the flow area of the exhaust passage is greater than the flow area of the branch pipe.

[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of a rear subframe assembly and an exhaust pipe according to an embodiment of the present application;

[0019] Figure 2 is a top view of a rear subframe assembly and an exhaust pipe according to an embodiment of the present application;

[0020] Figure 3 is a schematic view of a rear subframe assembly and an exhaust pipe according to an embodiment of the present application;

[0021] Figure 4 This is a partial enlarged view of the rear end of the longitudinal beam of the rear subframe assembly according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of a noise reduction structure according to an embodiment of the present utility model.

[0023] Figure label:

[0024] 10. Rear subframe assembly;

[0025] 1. Exhaust passage; 11. Exhaust port;

[0026] 2. Noise-absorbing structure; 21. Noise-absorbing hole; 22. Flow guide groove; 23. Fixing structure;

[0027] 3. Longitudinal beam; 3a. Left longitudinal beam; 3b. Right longitudinal beam; 4. Crossbeam; 4a. Front crossbeam; 4b. Rear crossbeam;

[0028] 20. Exhaust pipe; 20a. Connecting pipe; 20b. Diverter pipe;

[0029] e1, First direction. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0032] The rear subframe assembly 10 according to a first aspect of the present invention is described below with reference to the accompanying drawings.

[0033] like Figures 1-5As shown, according to the first aspect embodiment of the present invention, a rear subframe assembly 10 has an exhaust channel 1 formed within it. The exhaust channel 1 has an air inlet and an exhaust outlet 11, and a muffler structure 2 is provided within it. The exhaust channel 1 is adapted to communicate with an exhaust pipe 20. The rear subframe assembly 10 is composed of two crossbeams 4 and two longitudinal beams 3, wherein the two crossbeams 4 are a front crossbeam 4a and a rear crossbeam 4b, and the two longitudinal beams 3 are a left longitudinal beam 3a and a right longitudinal beam 3b.

[0034] Understandably, the intake end of the exhaust pipe 20 is connected to the engine cylinder, and the exhaust gas generated during engine operation is discharged through the exhaust pipe 20. Since the exhaust pipe 20 is connected to the exhaust passage 1 of the rear subframe assembly 10, the exhaust gas entering the exhaust pipe 20 can enter the exhaust passage 1 through the intake port and finally be discharged to the rear side of the rear subframe assembly 10 through the exhaust port 11. Furthermore, when the exhaust gas flows along the exhaust passage 1 and passes through the muffler structure 2, the muffler structure 2 can effectively dissipate the exhaust gas energy, thereby reducing exhaust noise. In other words, the rear subframe assembly 10 can replace the rear muffler in related technologies.

[0035] Therefore, by providing an exhaust channel 1 within the rear subframe assembly 10 and a muffler structure 2 within the exhaust channel 1, the rear subframe assembly 10 can replace the rear muffler in related technologies to save the installation space occupied by the rear muffler. This allows for more installation space to be reserved for structures such as the trunk and rear suspension installed at the rear of the vehicle, thereby improving the utilization rate of the vehicle's bottom space.

[0036] According to the rear subframe assembly 10 of the first aspect of the present invention, by providing an exhaust channel 1 and a muffler structure 2 in the exhaust channel 1, the rear subframe assembly 10 can replace the rear muffler in the related art to save the installation space occupied by the rear muffler, thereby reserving more installation space for structures such as the trunk and rear suspension installed at the rear of the vehicle, so as to improve the utilization rate of the vehicle's bottom space.

[0037] According to some embodiments of the present invention, the exhaust passage 1 is formed within the longitudinal beam 3 of the rear subframe assembly 10. The longitudinal beam 3 extends in the front-rear direction, facilitating the exhaust passage 1 to be configured to extend in the front-rear direction, thereby enabling the exhaust passage 1 to transport exhaust gas to the rear of the vehicle in the front-rear direction and discharge it.

[0038] According to some embodiments of this utility model, the air intake is located at the front end of the longitudinal beam 3, and the exhaust port 11 is located at the rear end of the longitudinal beam 3. That is, the exhaust gas in the exhaust pipe 20 enters the exhaust passage 1 through the front end of the longitudinal beam 3, and the exhaust gas in the exhaust passage 1 is finally discharged at the rear end of the longitudinal beam 3, ensuring that the engine exhaust gas can be smoothly discharged to the rear of the vehicle. Furthermore, the exhaust pipe 20 only needs to be connected between the engine and the front end of the longitudinal beam 3, which can effectively shorten the length of the exhaust pipe 20 and reduce costs.

[0039] According to some embodiments of this utility model, each exhaust channel 1 has at least two exhaust ports 11, and the at least two exhaust ports 11 are distributed on the left and right sides of the longitudinal beam 3. Therefore, the gas in the exhaust channel 1 can be divided into two streams and discharged from the two exhaust ports 11 on the left and right sides respectively, which can avoid the airflow from the two exhaust ports 11 from affecting each other and improve exhaust efficiency.

[0040] According to some embodiments of this utility model, the silencing structure 2 is provided with multiple structures arranged at intervals along the front-to-back direction. That is to say, the exhaust gas entering the exhaust channel 1 needs to pass through multiple silencing structures 2 in sequence before being discharged through the exhaust port 11. Therefore, during the exhaust gas discharge process, the sound wave energy can be weakened multiple times by the multiple silencing structures 2 in the exhaust channel 1, thereby improving the weakening effect of the exhaust channel 1 on the exhaust gas energy and further reducing exhaust noise.

[0041] According to some embodiments of this utility model, the spacing between any two adjacent silencing structures 2 is the same. That is, multiple silencing structures 2 are evenly distributed in the exhaust channel 1 along the front-to-back direction, so that the sound waves are reflected and interfered in a regular manner during propagation, thereby more efficiently reducing noise in a specific frequency range. Moreover, the uniform distribution of silencing structures 2 can more comprehensively cover the entire exhaust channel 1, which can improve the uniformity of noise reduction by the silencing structures 2.

[0042] According to some embodiments of this utility model, a silencing structure 2 has a through-hole 21 extending in the front-to-back direction. The silencing hole 21 is elongated in shape and extends along a first direction e1, which is perpendicular to the front-to-back direction. By providing the silencing hole 21 on the silencing structure 2, only the portion of the airflow directly opposite the silencing hole 21 in the upstream airflow can be directly discharged through it. The remaining airflow will collide with the silencing structure 2 and be reflected, thereby consuming sound wave energy during airflow reflection and reducing exhaust noise. Furthermore, by providing the elongated silencing hole 21, the flow area of ​​the silencing hole 21 can be controlled while requiring only one hole, simplifying the processing steps of the silencing structure 2. Simultaneously, reducing the number of silencing holes 21 lowers the difficulty of guiding airflow towards them.

[0043] According to some embodiments of this utility model, a guide groove 22 is formed on the front wall of the silencing structure 2. In the direction from front to back, the inner circumferential surface of the guide groove 22 extends obliquely towards the center of the silencing hole 21. The silencing hole 21 is formed on the inner bottom wall of the guide groove 22. Here, the inner bottom wall of the guide groove 22 refers to the inner wall surface of the guide groove 22 facing the airflow in the exhaust channel 1. After entering the guide groove 22, the airflow will flow along the inner circumferential surface of the guide groove 22 towards the inner bottom wall of the guide groove 22, i.e., the silencing hole 21. The inner circumferential surface of the guide groove 22 is tapered in the airflow direction, which can effectively guide the airflow towards the inner bottom wall of the guide groove 22, thereby reducing exhaust noise while allowing exhaust gas to be discharged smoothly to improve exhaust efficiency.

[0044] In some embodiments, the outer peripheral surface of the muffler structure 2 is sealed to the inner peripheral surface of the exhaust channel 1, thereby preventing the escape of the gap between the exhaust channel muffler structure 2 and the inner peripheral surface of the exhaust channel 1, that is, ensuring that the airflow flowing through the muffler structure 2 passes through the muffler hole 21, so as to ensure the muffler effect of the muffler structure 2.

[0045] In a specific example, the outer peripheral wall of the muffler structure 2 is provided with multiple fixed structures 23 arranged at intervals along its circumference. The fixed structures 23 can be formed as flanged structures, etc., without specific limitations. Therefore, the connection strength between the muffler structure 2 and the inner peripheral surface of the exhaust channel 1 can be improved by the fixed structures 23.

[0046] The vehicle according to a second aspect embodiment of the present invention is described below with reference to the accompanying drawings.

[0047] According to a second aspect embodiment of the present invention, a vehicle includes a rear subframe assembly 10 and an exhaust pipe 20. The exhaust pipe 20 is connected to the front side of the rear subframe assembly 10 and is connected to an exhaust passage 1 via an air intake. The air intake end of the exhaust pipe 20 is connected to the cylinder of the engine. Exhaust gas generated during engine operation is discharged through the exhaust pipe 20. Since the exhaust pipe 20 is connected to the exhaust passage 1 of the rear subframe assembly 10, the exhaust gas entering the exhaust pipe 20 can enter the exhaust passage 1 through the air intake and finally be discharged to the rear side of the rear subframe assembly 10 through the exhaust port 11. Furthermore, when the exhaust gas flows along the exhaust passage 1 and passes through the muffler structure 2, the muffler structure 2 can effectively dissipate the exhaust gas energy, thereby reducing exhaust noise. In other words, the rear subframe assembly 10 can replace the rear muffler in related technologies.

[0048] According to the second aspect of the present invention, the vehicle has an exhaust channel 1 and a muffler structure 2 provided in the exhaust channel 10, so that the rear subframe assembly 10 can replace the rear muffler in the related art to save the installation space occupied by the rear muffler. This allows for more installation space to be reserved for structures such as the trunk and rear suspension installed at the rear of the vehicle, thereby improving the utilization rate of the vehicle's bottom space.

[0049] According to some embodiments of this utility model, the exhaust pipe 20 includes a connecting pipe 20a and two branch pipes 20b connected downstream of the connecting pipe 20a. The rear subframe assembly 10 includes two longitudinal beams 3, each containing an exhaust channel 1. The connecting pipe 20a is connected to the two exhaust channels 1 via the two branch pipes 20b. The intake end of the connecting pipe 20a is connected to the engine cylinder, and exhaust gas from the engine cylinder is discharged into the connecting pipe 20a. The rear subframe assembly 10 has two exhaust channels 1, and the connecting pipe 20a is connected to the two exhaust channels 1 via the two branch pipes 20b. Exhaust gas entering the connecting pipe 20a can be branched into the two branch pipes 20b, and the exhaust gas entering the two branch pipes 20b is discharged to the rear of the vehicle via the corresponding two exhaust channels 1. Therefore, the exhaust flow can be increased to improve the exhaust efficiency of the rear subframe assembly 10. At the same time, the two split pipes 20b distribute the exhaust gas to the two side longitudinal beams 3, which can reduce the heat load of the single side longitudinal beam 3. This can prevent the high temperature exhaust gas from flowing out through the single side longitudinal beam 3, causing the heat load to exceed the upper limit, and thus improve the heat dissipation performance of the rear subframe assembly 10.

[0050] In a specific example, the air intake is formed on the side surface of the longitudinal beam 3 connected to the front crossbeam 4a, i.e., the front end face, and the end of the diverter pipe 20b away from the connecting pipe 20a is inserted into the front crossbeam 4a and connected to the air intake.

[0051] According to some embodiments of this utility model, the flow area of ​​the exhaust channel 1 is larger than that of the diverter pipe 20b. It can be understood that as airflow flows into the exhaust channel 1 through the diverter pipe 20b, the increased flow area reduces the pressure and velocity of the airflow entering the exhaust channel 1. The expanded airflow can change direction, thereby generating turbulence through the interference of airflows with different directions. This effectively dissipates the pulsating energy of the exhaust gas, thus reducing exhaust noise.

[0052] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear subframe assembly, characterized in that, An exhaust channel is formed within the rear subframe assembly. The exhaust channel has an air inlet and an air outlet and is equipped with a muffler structure. The exhaust channel is adapted to communicate with an exhaust pipe and is formed within the longitudinal beam of the rear subframe assembly.

2. The rear subframe assembly according to claim 1, characterized in that, The air inlet is located at the front end of the longitudinal beam, and the exhaust outlet is located at the rear end of the longitudinal beam; and / or, each exhaust channel has at least two exhaust outlets, and at least two exhaust outlets are distributed on the left and right sides of the longitudinal beam.

3. The rear subframe assembly according to claim 1 or 2, characterized in that, The noise reduction structure has multiple components arranged at intervals along the front-to-back direction.

4. The rear subframe assembly according to claim 3, characterized in that, The spacing between any two adjacent noise-reducing structures is the same.

5. The rear subframe assembly according to claim 4, characterized in that, The silencing structure has a silencing hole that runs through the front and back directions. The silencing hole is an elongated strip extending along a first direction, which is perpendicular to the front and back directions.

6. The rear subframe assembly according to claim 5, characterized in that, A flow guide groove is formed on the front wall of the silencing structure. In the direction from front to back, the inner circumferential surface of the flow guide groove extends obliquely toward the center of the silencing hole. The silencing hole is formed on the inner bottom wall of the flow guide groove.

7. A vehicle, characterized in that, include: Rear subframe assembly according to any one of claims 1-6; An exhaust pipe is connected to the front side of the rear subframe assembly, and the exhaust pipe communicates with the exhaust passage through the air intake.

8. The vehicle according to claim 7, characterized in that, The exhaust pipe includes a connecting pipe and two branch pipes connected to the downstream side of the connecting pipe. The rear subframe assembly includes two longitudinal beams, and the exhaust passages are formed in both longitudinal beams. The connecting pipe is connected to the two exhaust passages through the two branch pipes respectively.

9. The vehicle according to claim 8, characterized in that, The flow area of ​​the exhaust channel is larger than the flow area of ​​the diversion pipe.

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