Vehicle body structure and vehicle

Abstract

The utility model provides a vehicle body structure and a vehicle. The vehicle body structure comprises a vehicle body main body and an exhaust pipeline, the vehicle body comprises a rear longitudinal beam extending in the front-back direction of the vehicle body. The exhaust pipeline comprises a first pipe section and a second pipe section. The rear longitudinal beam is provided with an exhaust channel, and the exhaust channel is communicated with the first pipe section and the second pipe section. According to the utility model, the technical problems that the ground clearance of the whole vehicle is reduced and the overall trafficability of the vehicle is reduced due to the fact that the installation position of the exhaust pipeline in the existing vehicle is lower can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle body structure and a vehicle. Background Art

[0002] In existing technology, the exhaust pipe in a vehicle is typically installed below the subframe. However, this exhaust pipe layout places it at the lowest point of the vehicle. For a given vehicle height, this arrangement reduces ground clearance, thereby reducing the vehicle's overall maneuverability. Furthermore, the exhaust pipe is susceptible to collision with objects on the ground while the vehicle is in motion, causing damage and shortening its service life. Utility Model Content

[0003] In view of the above problems existing in the prior art, the present invention provides a vehicle body structure and a vehicle to improve the technical problem in existing vehicles that the ground clearance of the vehicle is reduced due to the lower installation position of the exhaust pipe, thereby reducing the overall passability of the vehicle.

[0004] To achieve the above-mentioned objectives and other related objectives, the first aspect of the present invention provides a vehicle body structure, including: a vehicle body main body and an exhaust pipe; the vehicle body main body includes a rear longitudinal beam extending along the front-to-rear direction of the vehicle body, and the exhaust pipe includes a first pipe section and a second pipe section; wherein, the rear longitudinal beam is provided with an exhaust channel, and the exhaust channel connects the first pipe section and the second pipe section.

[0005] This arrangement offers the following benefits: By providing an exhaust duct within the rear longitudinal beam, the beam can function as a partial exhaust pipe, eliminating the need for an additional exhaust pipe beneath the beam, i.e., beneath the vehicle body structure. This arrangement eliminates the need for the exhaust pipe to be installed around the rear subframe assembly beneath the rear longitudinal beam. This allows the exhaust pipe to be installed higher on the vehicle body structure, eliminating the need for the exhaust pipe to be located at the lowest point of the vehicle. This increases ground clearance and enhances vehicle maneuverability. Furthermore, since the exhaust duct is located within the longitudinal beam, the length of the exhaust pipe that protrudes from the underbody is reduced, better protecting the integrity of the exhaust pipe, reducing exhaust pipe failure rates, and increasing its service life.

[0006] Furthermore, compared to solutions in which the exhaust duct is disposed on the longitudinal beam of the subframe, this solution, because the exhaust duct is disposed on the longitudinal beam of the vehicle body, allows the first pipe section, the second pipe section, and the exhaust duct to be all fixed to the vehicle body. This makes it easier to ensure a sealed connection between the exhaust duct and the first and second pipe sections, thereby reducing the probability of abnormal exhaust emissions during vehicle operation and reducing operational malfunctions in the exhaust system. Furthermore, because the exhaust duct and the first and second pipe sections are installed away from the subframe mounting space below, the exhaust duct can be connected to the vehicle body before the subframe is mounted on the vehicle body. This facilitates exhaust duct installation, reduces installation difficulty, and improves exhaust duct installation efficiency.

[0007] In one embodiment of the present invention, the rear longitudinal beam is provided with a recessed portion, which is recessed toward a side away from the ground for accommodating the rear subframe assembly.

[0008] This design offers the following benefits: By providing a recessed portion on the rear longitudinal beam, space is reserved beneath the vehicle body for the rear subframe assembly, improving underbody space utilization, reducing the overall vehicle height, and enhancing the compactness of the vehicle design. Furthermore, the recessed rear longitudinal beam structure also increases the vehicle's main body's bending and torsional rigidity, improving the vehicle's maneuverability and stability.

[0009] In an embodiment of the present invention, the rear longitudinal beam includes a first longitudinal beam and a second longitudinal beam spaced apart from each other in a transverse direction of the vehicle body, and at least one of the first longitudinal beam and the second longitudinal beam is provided with an exhaust passage.

[0010] The beneficial effects of such a setting are as follows: by providing a first longitudinal beam and a second longitudinal beam, and providing at least one of the first longitudinal beam and the second longitudinal beam with an exhaust channel, the setting positions of the exhaust pipe can be enriched so as to better adapt to the exhaust pipes at different setting positions on the vehicle, thereby improving the applicability of the exhaust channel.

[0011] In an embodiment of the present invention, the first longitudinal beam and / or the second longitudinal beam includes a hollow cavity, and the hollow cavity forms the exhaust channel.

[0012] The beneficial effect of this arrangement is that it can realize the integral connection between the exhaust duct and the rear longitudinal beam, so there is no need to set additional parts such as exhaust pipes in the rear longitudinal beam, thereby saving the processing cost of the rear longitudinal beam and ensuring processing efficiency.

[0013] In one embodiment of the present invention, an air inlet connector and an air outlet connector are respectively provided at both ends of the exhaust passage, one of the air inlet connector and the air outlet connector is connected to the first pipe section, and the other is connected to the second pipe section.

[0014] The beneficial effect of such a configuration is that by providing the air inlet connector and the air outlet connector, the connection between the first pipe section and the second pipe section and the exhaust channel can be facilitated, thereby improving the connection efficiency.

[0015] In an embodiment of the present invention, the air inlet connector and the air outlet connector are respectively arranged on both sides of the exhaust passage along the transverse direction of the vehicle body.

[0016] The beneficial effect of this arrangement is that the air inlet connector and the air outlet connector extend toward both sides of the transverse direction of the vehicle body, respectively, so that the first pipe section and the second pipe section are arranged on both sides of the transverse direction of the vehicle body, respectively. This can not only further reduce the vehicle body height occupied by the first pipe section and the second pipe section when installed, but also reduce the probability of interference with the rear subframe assembly installed below the rear longitudinal beam.

[0017] In one embodiment of the present invention, the air inlet connector is provided on a wall of the exhaust passage facing the interior of the vehicle body, and the air outlet connector is provided on a wall of the exhaust passage facing the exterior of the vehicle body.

[0018] The beneficial effects of this arrangement are as follows: with this arrangement, the first pipe section can be set on one side inside the vehicle body to facilitate connection with the engine exhaust port in the front of the vehicle body; at the same time, the second pipe section can also be set on one side outside the vehicle body to facilitate connection to the rear end position of the vehicle body.

[0019] In one embodiment of the present invention, the cross section of the exhaust passage is larger than the cross section of the exhaust pipe.

[0020] The beneficial effects of this arrangement are as follows: With this arrangement, the larger cross-section inside the exhaust passage helps to improve the flow characteristics of the exhaust airflow, reduce the generation of turbulence and eddies inside the exhaust passage, thereby reducing the noise generated when the airflow flows through the exhaust passage, which is beneficial to reducing the noise generated when the exhaust pipe on the vehicle is working.

[0021] In an embodiment of the present invention, the exhaust passage includes at least one bent section along the length direction of the longitudinal beam.

[0022] The beneficial effect of this arrangement is that the bend helps optimize the airflow path within the exhaust passage, further reducing turbulence and eddies, thereby reducing noise. Furthermore, the bend, by altering the airflow path, increases exhaust flow resistance, further helping to reduce exhaust noise.

[0023] In one embodiment of the present invention, a partition is provided in the exhaust channel for changing the direction of airflow in the exhaust channel, and the partition is connected to the wall of the exhaust channel.

[0024] The beneficial effect of such a setting is that by arranging a partition inside the exhaust channel, the partition can increase the curvature and exhaust resistance of the airflow during the flow inside the exhaust channel, thereby increasing the flow path length of the airflow inside the exhaust channel, thereby further playing a role in sound insulation and noise reduction.

[0025] In one embodiment of the present invention, the wall of the exhaust passage and / or the partition is provided with a sound absorbing structure.

[0026] The beneficial effect of such a setting is that by providing a sound-absorbing structure, the noise generated when the airflow passes through the exhaust channel can be further reduced, thereby improving the sound-absorbing and noise-reducing effect of the exhaust channel.

[0027] In one embodiment of the present invention, a plurality of partitions are provided, and the plurality of partitions are spaced apart along the length direction of the exhaust passage.

[0028] The beneficial effect of such a setting is that by arranging a plurality of the baffles inside the exhaust passage, not only can the contact area between the baffles and the exhaust airflow be increased, thereby obtaining a better sound absorption and noise reduction effect; but a more uniform noise reduction effect can also be obtained in the length direction of the exhaust passage.

[0029] In one embodiment of the present invention, a plurality of partitions are spaced apart and arranged on two opposite side walls of the exhaust passage.

[0030] The beneficial effect of such a setting is that with such a setting, the multiple flow openings formed between the multiple partitions and the walls of the exhaust channel will form further undulating and bending changes inside the exhaust channel, thereby further increasing the flow path length of the airflow in the exhaust channel, thereby further increasing the sound absorption and noise reduction effect of the exhaust channel.

[0031] In one embodiment of the present invention, a through hole adapted to the partition is provided on the wall of the exhaust passage, and the partition is inserted into the interior of the exhaust passage through the through hole.

[0032] The beneficial effect of this arrangement is: by arranging a through hole on the wall of the exhaust channel, the partition can be inserted into the exhaust channel through the through hole. By controlling the opening position of the through hole on the exhaust channel, the arrangement position of the partition in the exhaust channel can be controlled and adjusted, thereby facilitating the adjustment of the installation position of the partition, and also facilitating the positioning and installation of the partition on the exhaust channel.

[0033] In one embodiment of the present invention, the partition is arranged to be inclined with respect to the cross section of the exhaust passage at a corresponding position along the insertion direction of the through hole.

[0034] Beneficial effects of such arrangement: Such arrangement can further increase the contact area between the partition and the airflow inside the exhaust channel, thereby further enhancing the sound absorption and noise reduction effect of the exhaust channel.

[0035] A second aspect of the present invention provides a vehicle, which includes the vehicle body structure in any one of the above embodiments.

[0036] The beneficial effects of such a setting are as follows: by adopting the above-mentioned body structure on the vehicle, the installation space under the body occupied by the exhaust pipe can be reduced, the passability of the vehicle bottom can be improved, and the structural design of the vehicle bottom can be made more compact, which facilitates the installation of structures such as the rear subframe assembly under the body structure.

[0037] In the vehicle body structure of the present invention, a rear longitudinal beam extending along the vehicle body is provided on the vehicle body. An exhaust duct is provided on the rear longitudinal beam, connecting the exhaust duct to the first and second pipe sections of the exhaust pipe. Compared to solutions in which the exhaust pipe is provided below the rear subframe, the rear longitudinal beam in this embodiment can function as a portion of the exhaust pipe. Therefore, there is no need to provide an exhaust pipe below the rear longitudinal beam, i.e., below the vehicle body structure. This allows the overall installation height of the exhaust pipe on the vehicle body structure to be raised, so that the exhaust pipe is no longer located at the lowest point of the vehicle, thereby increasing the ground clearance of the vehicle and improving its maneuverability. Furthermore, due to the increased ground clearance of the exhaust pipe, the probability of damage to the exhaust pipe due to collision with objects on the ground is reduced, thereby increasing the service life of the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying any creative work.

[0039] Figure 1This is a schematic diagram of the three-dimensional structure of the vehicle body structure of the present invention in one embodiment;

[0040] Figure 2 A top view of the vehicle body structure of the present invention in one embodiment;

[0041] Figure 3 This is a schematic diagram of the vehicle body structure of the present invention in another embodiment from another angle;

[0042] Figure 4 This is a schematic structural diagram of a vehicle body structure according to the present invention in which an exhaust passage is provided inside a rear longitudinal beam in one embodiment;

[0043] Figure 5 for Figure 4 A partial enlarged view of area A in the middle.

[0044] Component number description

[0045] 100. Vehicle body structure; 110. Vehicle body; 111. Rear longitudinal beam; 112. Hollow cavity; 1111. First longitudinal beam; 1112. Second longitudinal beam; 113. Cross beam; 114. Connector; 115. Mounting hole; 120. Exhaust pipe; 121. First pipe section; 122. Second pipe section; 130. Exhaust channel; 131. Inlet connector; 132. Outlet connector; 133. Bent section; 134. Through hole; 135. Flow port; 140. Recess; 141. Straight section; 142. Inclined section; 150. Partition; 160. Sound-absorbing structure; 170. Muffler; 200. Rear subframe assembly; 300. Engine. DETAILED DESCRIPTION

[0046] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation methods. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following examples and the features in the examples can be combined with each other unless there is a conflict. It should also be understood that the terms used in the examples of the present invention are for the purpose of describing specific implementation methods, not for the purpose of limiting the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0047] When numerical ranges are given in the examples, it should be understood that unless otherwise specified herein, both endpoints of each numerical range and any value between the endpoints may be used. Unless otherwise defined, all technical and scientific terms used in this utility model are consistent with the prior art as understood by those skilled in the art and the description of this utility model. Any prior art methods, equipment, and materials similar or equivalent to those in the examples of this utility model may also be used to implement this utility model.

[0048] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0049] Through long-term observation and research of vehicles, the inventors discovered that with the continuous optimization of automobile structures, many current models adopt a monocoque structure. This eliminates the separate chassis structure beneath the vehicle body. By improving and reinforcing the body structure, the body can now bear the vehicle's weight and load. Because monocoque vehicles lack a chassis structure, a rear subframe structure is typically installed beneath the body structure to accommodate components such as the body structure and suspension system.

[0050] Compared to the chassis structure, the installation space on the rear subframe below the body structure is relatively limited. In addition to the suspension system, the rear subframe also houses the vehicle's rear-drive system, such as the drive motor and other components. This makes it difficult to install other components within the space below the body, especially restricting the placement of the exhaust pipe under the body. The exhaust pipe often needs to bypass the lower part of the rear subframe before connecting to the tailpipe at the rear end of the body. This arrangement makes the exhaust pipe under the rear subframe the lowest point of the vehicle, thereby reducing the vehicle's ground clearance. Under the condition that the vehicle height remains unchanged, the vehicle's overall passability will be reduced.

[0051] To address the aforementioned issues, some manufacturers currently employ an approach whereby an exhaust duct is provided on the longitudinal beam of the subframe, connecting the exhaust duct to the intake and outlet sections of the exhaust pipe. The intake section, exhaust duct, and outlet section are connected to form the vehicle's exhaust duct. While this approach can improve ground clearance of the exhaust duct beneath the vehicle body, it results in a portion of the exhaust duct (i.e., the exhaust duct) being located on the subframe below, and a portion of the duct (i.e., the intake and outlet sections) being located on the vehicle body above. Since the subframe and vehicle body are typically elastically connected via a suspension structure, relative movement between the subframe and vehicle body is unavoidable during vehicle operation. This can lead to difficulties sealing the connection between the exhaust duct and the intake and outlet sections at both ends, increasing the likelihood of air leakage over extended periods of operation and affecting the proper exhaust flow of the exhaust duct. At the same time, when installing the exhaust pipe, the subframe and the body must be connected and assembled before the exhaust pipe can be assembled. This makes the assembly accuracy of the exhaust pipe significantly affected by the assembly accuracy of the subframe and the body. Therefore, it increases the difficulty of exhaust pipe assembly and reduces the installation efficiency of the exhaust pipe.

[0052] Based on the above reasons, the inventors of the present application propose a vehicle body structure and a vehicle.

[0053] See also Figures 1 to 5 The present invention provides a vehicle body structure 100 and vehicle. By providing an exhaust duct 130 on the rear longitudinal beam 111 of the vehicle body 110, the rear longitudinal beam 111 can function as a partial exhaust pipe. This eliminates the need for an exhaust pipe below the rear longitudinal beam 111, i.e., below the vehicle body structure 100. This allows the exhaust pipe 120 to be installed higher on the vehicle body structure 100, increasing the vehicle's ground clearance and improving its maneuverability. This also facilitates installation of the exhaust pipe on the vehicle body, improving installation efficiency.

[0054] See also Figure 1 and Figure 2 The vehicle body structure 100 of the present invention includes a vehicle body 110 and an exhaust pipe 120. The vehicle body 110 includes a rear longitudinal beam 111 extending along the front-rear direction of the vehicle body. Figure 2As shown in the direction of the middle X-axis. One or more rear longitudinal beams 111 may be provided to meet the support strength requirements of the vehicle body 110. The structural shape of the rear longitudinal beam 111 may be various, for example, it may be a straight line, a C-shaped, a curved shape, or a tubular shape with a circular cross-section. It should be noted that the vehicle body 110 may also include a crossbeam 113 and a connector 114. The crossbeam 113 is connected to the rear longitudinal beam 111 to form a frame structure. The connector 114 is respectively connected to the crossbeam 113 and the rear longitudinal beam 111 to form a mounting plane on the vehicle body 110, which facilitates the connection of other parts to the vehicle body 110. A mounting hole 115 is provided on the connector 114 to avoid components such as the drive motor on the rear subframe in the height direction of the vehicle body.

[0055] Please refer to 2 to Figure 4 The exhaust pipe 120 includes a first pipe section 121 and a second pipe section 122, which are spaced apart. The first and second pipe sections 121, 122 can be positioned in any manner, with the first pipe section 121 or the second pipe section 122 either connected to the exhaust port of the engine 300 at the front of the vehicle body or the second pipe section 122 at the front of the vehicle body. Alternatively, in this embodiment, the first pipe section 121 is connected to the exhaust port of the engine 300 at the front of the vehicle body, and the second pipe section 122 is positioned behind the first pipe section 121, i.e., at an end away from the exhaust port of the engine 300.

[0056] See also Figures 2 to 4 The rear longitudinal member 111 is provided with an exhaust duct 130, which extends along the length of the rear longitudinal member 111, that is, along the front-to-rear direction of the vehicle body. A first pipe section 121 and a second pipe section 122 are located at opposite ends of the exhaust duct 130 in the longitudinal direction. The ends of the exhaust duct 130 are connected to the first and second pipe sections 121, 122, respectively, to achieve communication between the first and second pipe sections 121, 122. The exhaust duct 130 can be formed in a variety of ways, such as by forming a cavity within the rear longitudinal member 111 and directly utilizing the cavity to form the exhaust duct 130. Alternatively, the exhaust duct 130 can be formed by inserting an exhaust pipe within the rear longitudinal member 111.

[0057] By providing the exhaust duct 130 within the rear longitudinal beam 111, the rear longitudinal beam 111 can function as a partial exhaust pipe, eliminating the need for an additional exhaust pipe beneath the rear longitudinal beam 111, i.e., beneath the vehicle body structure 100. This arrangement eliminates the need for the exhaust duct 120 to be installed around the rear subframe assembly 200 beneath the rear longitudinal beam 111. This allows the exhaust duct 120 to be installed higher on the vehicle body structure 100, eliminating the need for the exhaust duct 120 to be located at the lowest point of the vehicle. This increases the vehicle's ground clearance and enhances its maneuverability. Furthermore, since the exhaust duct 130 is located within the rear longitudinal beam 111, the length of the exhaust duct 120 that protrudes from the underbody is reduced, better protecting the integrity of the exhaust duct 120 and reducing the risk of exhaust duct 120 failure.

[0058] Furthermore, compared to solutions where exhaust duct 130 is installed on the longitudinal beam of the subframe, this solution installs exhaust duct 130 on the longitudinal beam of the vehicle body. Therefore, first pipe section 121, second pipe section 122, and exhaust duct 130 are all fixed to the vehicle body. This makes it easier to ensure a sealed connection between exhaust duct 130 and first and second pipe sections 121, 122, thereby reducing the probability of abnormal emissions from exhaust pipe 120 during vehicle operation and reducing operational malfunctions in the exhaust system. Furthermore, because exhaust duct 130 and first and second pipe sections 121, 122 are installed away from the subframe mounting space below, exhaust duct 120 can be connected to the vehicle body before the subframe is installed on the vehicle body. This facilitates installation of exhaust duct 120, reduces installation difficulty, and improves installation efficiency.

[0059] In one embodiment of the present invention, the rear longitudinal beam 111 is provided with a recess 140, which is recessed toward the side facing away from the ground to accommodate the rear subframe assembly 200. The specific shape of the recess 140 is not limited; for example, it can be an approximately arc-shaped structure, or a combination of straight and curved segments. Optionally, to facilitate the positioning and installation of the rear longitudinal beam 111 on the vehicle body structure 100, in this embodiment, the recess 140 includes two inclined sections 142 and a straight section 141, which is arranged approximately parallel to the ground. The two inclined sections 142 are respectively connected to the ends of the straight section 141. The straight section 141 is located at the uppermost end of the rear longitudinal beam 111, meaning that the distance between the straight section 141 and the ground is greater than the distance between other locations on the rear longitudinal beam 111 and the ground. By providing recessed portion 140 on rear longitudinal beam 111, space is reserved beneath the vehicle body for installing rear subframe assembly 200, improving underbody space utilization, reducing the overall installation height of the vehicle, and enhancing the compactness of the vehicle design. Furthermore, the structure of rear longitudinal beam 111 with recessed portion 140 also increases the bending and torsional rigidity of vehicle body 110, improving vehicle maneuverability and stability.

[0060] In one embodiment of the present invention, the rear longitudinal beam 111 includes a first longitudinal beam 1111 and a second longitudinal beam 1112 spaced apart along the transverse direction of the vehicle body 110. The first longitudinal beam 1111 and the second longitudinal beam 1112 are connected by a cross beam 113 and a connecting member 114. The transverse direction of the vehicle body 110 is the left-right direction of the vehicle body. Figure 2 As shown in the Y-axis direction. The first longitudinal beam 1111 and the second longitudinal beam 1112 can be symmetrically arranged along the transverse direction of the vehicle body 110, or can be asymmetrically arranged. Preferably, in this embodiment, the first longitudinal beam 1111 and the second longitudinal beam 1112 are symmetrically arranged along the transverse direction of the vehicle body 110, so as to facilitate the positioning, installation and processing of the rear longitudinal beam 111. The exhaust duct 130 can be arranged on the first longitudinal beam 1111, or on the second longitudinal beam 1112, or both the first longitudinal beam 1111 and the second longitudinal beam 1112 are provided with the exhaust duct 130, as long as at least one of the first longitudinal beam 1111 and the second longitudinal beam 1112 is provided with the exhaust duct 130. In the actual design and production process, the specific setting position of the exhaust duct 130 needs to be adapted to the arrangement position of the exhaust pipe 120 on the vehicle. Optionally, in this embodiment, the exhaust duct 130 is provided on the first longitudinal beam 1111. By providing a first longitudinal beam 1111 and a second longitudinal beam 1112, and providing at least one of the first longitudinal beam 1111 and the second longitudinal beam 1112 with an exhaust channel 130, the setting positions of the exhaust pipe 120 can be enriched so as to better adapt to the exhaust pipe 120 at different setting positions on the vehicle, thereby improving the applicability of the exhaust channel 130.

[0061] See also Figure 3 and Figure 4 In one embodiment of the present invention, the first longitudinal beam 1111 includes a hollow cavity 112, and the hollow cavity 112 forms an exhaust channel 130. The hollow cavity 112 can be a uniform cross-sectional structure, an unequal cross-sectional structure, etc. The hollow cavity 112 can be a circular cross-sectional structure, a rectangular cross-sectional structure, an irregular cross-sectional structure, etc. There are many ways to form the hollow cavity 112. For example, it can be a cavity structure formed by the first longitudinal beam 1111 during the casting process, or it can be a cavity structure formed by the first longitudinal beam 1111 during the welding process, etc. It should be noted that in other embodiments, the second longitudinal beam 1112 can also include a hollow cavity 112, and the hollow cavity 112 forms another exhaust channel 130. In other embodiments, only the second longitudinal beam 1112 can include the hollow cavity 112, and the first longitudinal beam 1111 does not include the hollow cavity 112. By providing a hollow cavity 112 on the rear longitudinal beam 111, the hollow cavity 112 forms an exhaust passage 130. This arrangement can achieve an integral connection between the exhaust passage 130 and the rear longitudinal beam 111. Therefore, there is no need to additionally provide an exhaust pipe or other parts in the rear longitudinal beam 111, thereby saving the processing cost of the rear longitudinal beam 111 and ensuring processing efficiency.

[0062] To facilitate the connection between the exhaust passage 130 and the external exhaust pipe 120, please refer to Figure 1 、 Figure 3 and Figure 4 In one embodiment of the present invention, an air inlet connector 131 and an air outlet connector 132 are provided at each end of the exhaust passage 130. The air inlet connector 131 and the air outlet connector 132 can be fixed to the rear longitudinal beam 111 by screws or welds. In this embodiment, the air inlet connector 131 is connected to the first pipe section 121, and the air outlet connector 132 is connected to the second pipe section 122. In other embodiments, the air inlet connector 131 can be connected to the second pipe section 122, and the air outlet connector 132 can be connected to the first pipe section 121. Various connection methods are possible between the air inlet connector 131 and the first pipe section 121, and between the air outlet connector 132 and the second pipe section 122, such as threaded connection, welded connection, or hose clamp connection. The provision of the air inlet connector 131 and the air outlet connector 132 facilitates the connection between the first pipe section 121 and the second pipe section 122 and the exhaust passage 130, improving connection efficiency.

[0063] The positions of the air inlet connector 131 and the air outlet connector 132 in the circumferential direction of the exhaust passage 130 are not limited. The air inlet connector 131 and the air outlet connector 132 can be arranged on the side wall of the exhaust passage 130 in the same direction, or respectively on two opposite side walls in the vertical direction of the exhaust passage 130, or respectively on two opposite side walls in the left and right directions of the exhaust passage 130. Preferably, please refer to Figure 1 and Figure 3 In one embodiment of the present invention, the air inlet connector 131 and the air outlet connector 132 are respectively disposed on opposite sides of the exhaust passage 130 in the transverse direction of the vehicle body 110. This arrangement allows the air inlet connector 131 and the air outlet connector 132 to extend toward opposite sides of the vehicle body 110 in the transverse direction, thereby arranging the first pipe section 121 and the second pipe section 122 on opposite sides of the vehicle body 110 in the transverse direction. This not only further reduces the vehicle height occupied by the first pipe section 121 and the second pipe section 122 when installed, but also reduces the probability of interference with the rear subframe assembly 200 installed below the rear longitudinal beam 111.

[0064] Further, in one embodiment of the present invention, please refer to Figure 1 and Figure 3 The air inlet connector 131 is disposed on the wall of the exhaust passage 130 facing the interior of the vehicle body 110, that is, the air inlet connector 131 extends toward the interior of the vehicle body 110; the air outlet connector 132 is disposed on the wall of the exhaust passage 130 facing the exterior of the vehicle body 110, that is, the air outlet connector 132 extends toward the exterior of the vehicle body 110. This arrangement allows the first pipe section 121 to be disposed on the interior side of the vehicle body 110, thereby facilitating communication with the exhaust port of the engine 300 at the front of the vehicle body; while the second pipe section 122 can also be disposed on the exterior side of the vehicle body 110, thereby facilitating connection to the rear end of the vehicle body.

[0065] Under the condition that the exhaust passage 130 meets the exhaust requirements of the vehicle, there is usually no specific restriction on the cross-sectional size of the exhaust passage 130. However, considering the noise reduction effect of the exhaust passage 130, preferably, refer to Figure 1 and Figure 3 In one embodiment of the present invention, the cross-section of the exhaust passage 130 is larger than the cross-section of the exhaust pipe 120. This configuration improves the flow characteristics of the exhaust gas flow, reduces turbulence and eddies within the exhaust passage 130, and thus reduces the noise generated when the air flows through the exhaust passage 130, thereby enhancing the noise reduction performance of the exhaust pipe 120 on the vehicle.

[0066] See also Figure 3 and Figure 4 In one embodiment of the present invention, the exhaust duct 130 includes a bent section 133 along the longitudinal direction of the longitudinal beam, that is, the front-to-rear direction of the vehicle body. The exhaust duct 130 can be provided with one bent section 133, or multiple bent sections 133, which are smoothly connected. The bent section 133 can be a conformal bending structure generated by the exhaust duct 130 to adapt to the shape change of the rear longitudinal beam 111 itself, such as Figure 3Alternatively, partitions in different directions may be provided inside the rear longitudinal beam 111 to form a plurality of bending sections 133 in the inner cavity of the exhaust passage 130, as shown in FIG. Figure 4 The provision of the bent section 133 helps optimize the flow path of the airflow within the exhaust passage 130, further reducing turbulence and eddies, thereby reducing noise. Furthermore, the bent section 133, by altering the airflow path, increases exhaust flow resistance, thereby further reducing exhaust noise.

[0067] See also Figure 4 In one embodiment of the present invention, a partition 150 for changing the direction of the airflow in the exhaust channel 130 is provided in the exhaust channel 130, and the partition 150 is connected to the wall of the exhaust channel 130. The partition 150 can be welded to the wall of the exhaust channel 130, or can be integrally cast and connected to the wall of the exhaust channel 130, etc. There can be one partition 150, or multiple partitions 150 can be provided. The shape of the partition 150 is adapted to the shape of the exhaust channel 130. For example, when the exhaust channel 130 has a circular cross-section, the partition 150 is a circular plate structure; when the exhaust channel 130 has a rectangular cross-section, the partition 150 is a rectangular plate structure. On the premise of ensuring that the airflow can flow smoothly in the exhaust channel 130, the setting position and setting direction of the partition 150 inside the exhaust channel 130 are not limited. By setting a partition 150 inside the exhaust channel 130, the partition 150 can increase the curvature and exhaust resistance of the airflow during the flow inside the exhaust channel 130, thereby increasing the flow path length of the airflow inside the exhaust channel 130, thereby further playing a role in sound insulation and noise reduction.

[0068] In order to further enhance the noise reduction effect of the exhaust passage 130, preferably, refer to Figure 4In one embodiment of the present invention, a sound-absorbing structure 160 is provided on the wall of the exhaust duct 130. The sound-absorbing structure 160 can have a variety of structures. For example, a sound-absorbing material, such as glass fiber, rock wool or foam material, can be directly provided on the wall of the exhaust duct 130 to form the sound-absorbing structure 160. Alternatively, a double-layer cavity structure can be provided inside the exhaust duct 130, wherein the inner cavity is used as the exhaust duct 130 and the outer cavity is filled with sound-absorbing material to form the sound-absorbing structure 160. In other embodiments, the sound-absorbing structure 160 can also be provided on the partition 150. For example, the partition 150 is made of a sound-absorbing material, such as rubber, ceramic, metal foam, etc., to form the sound-absorbing structure 160 on the partition 150. Alternatively, a plurality of holes can be provided on the partition 150 to form the sound-absorbing structure 160 on the partition 150. In other embodiments, a sound absorbing structure 160 may be provided on both the wall of the exhaust duct 130 and the partition 150. The provision of the sound absorbing structure 160 can further reduce the noise generated when the airflow passes through the exhaust duct 130, thereby improving the noise reduction effect of the exhaust duct 130.

[0069] See also Figure 4 In one embodiment of the present invention, a plurality of baffles 150 are provided, and the plurality of baffles 150 are spaced apart along the length direction of the exhaust duct 130. The location of the plurality of baffles 150 in the exhaust duct 130 is not limited. For example, they may all be provided on the wall on the same side of the exhaust duct 130, or they may be provided on the walls in different directions of the exhaust duct 130. The plurality of baffles 150 may be provided at equal intervals or at unequal intervals. A flow opening 135 is formed between each baffle 150 and the wall of the exhaust duct 130. The shapes and sizes of the flow openings 135 formed between the plurality of baffles 150 and the exhaust duct 130 may be equal or unequal. By providing a plurality of baffles 150 inside the exhaust duct 130, not only can the contact area between the baffles 150 and the exhaust airflow be increased, thereby achieving a better sound absorption and noise reduction effect, but also a more uniform noise reduction effect can be achieved along the length direction of the exhaust duct 130.

[0070] See also Figure 4In one embodiment of the present invention, a plurality of baffles 150 are spaced apart on opposite side walls of the exhaust duct 130. The opposite side walls of the exhaust duct 130 may be any opposite side walls of the exhaust duct 130 in the circumferential direction, for example, opposite side walls along the height direction of the vehicle body, or opposite side walls along the left-right direction of the vehicle body, etc. With this arrangement, the plurality of flow openings 135 formed between the plurality of baffles 150 and the walls of the exhaust duct 130 create further undulating and twisting changes within the exhaust duct 130, thereby further increasing the flow path length of the airflow within the exhaust duct 130, thereby further enhancing the noise reduction effect of the exhaust duct 130.

[0071] See also Figure 4 and Figure 5 In one embodiment of the present invention, a through hole 134 is provided on the wall of the exhaust duct 130, which is compatible with the partition 150. The partition 150 is inserted into the interior of the exhaust duct 130 through the through hole 134. As long as the partition 150 can be inserted into the exhaust duct 130, the through hole 134 can be formed through one side wall of the exhaust duct 130 or through two opposite walls of the exhaust duct 130. The through hole 134 being compatible with the partition 150 specifically means that the shape and size of the through hole 134 meet the insertion requirements of the partition 150, and the gap formed between the partition 150 and the through hole 134 is appropriate, which not only facilitates the insertion of the partition 150 but also allows for positioning of the insertion angle of the partition 150. One end of the partition 150 is inserted into the exhaust passage 130 through the through hole 134, and a flow opening 135 is formed between the partition 150 and the wall of the exhaust passage 130 at a corresponding position. The other end of the partition 150 is retained in the through hole 134 and fixed in the through hole 134 by welding or bonding. By providing the through hole 134 in the wall of the exhaust passage 130, the partition 150 can be inserted into the exhaust passage 130 through the through hole 134. In this way, by controlling the opening position of the through hole 134 on the exhaust passage 130, the arrangement position of the partition 150 in the exhaust passage 130 can be controlled and adjusted, thereby facilitating the adjustment of the installation position of the partition 150 and facilitating the positioning and installation of the partition 150 on the exhaust passage 130.

[0072] See also Figure 4In one embodiment of the present invention, the partition 150 is arranged to be inclined along the insertion direction of the through hole 134 and the cross section of the exhaust channel 130 at the corresponding position, and an inclined angle α is formed. The inclined direction of the partition 150 inside the exhaust channel 130 is not limited, and the specific angle of the inclined angle α formed is also not limited. When multiple partitions 150 are arranged in the exhaust channel 130, the inclined directions of the multiple partitions 150 can be the same or different, and the inclined angles α formed by the inclination of the multiple partitions 150 can be equal or different. This arrangement can further increase the contact area between the partition 150 and the airflow inside the exhaust channel 130, thereby further enhancing the sound absorption and noise reduction effect of the exhaust channel 130.

[0073] It should be noted that, in this embodiment, please refer to Figure 4 To further reduce exhaust noise generated by exhaust pipe 120, a muffler 170 may be installed at the rear end of second pipe section 122. Airflow through second pipe section 122 is further muffled and reduced in noise by muffler 170 at the outlet before being discharged to the exterior of the vehicle. In other embodiments, provided exhaust passage 130 meets exhaust noise reduction requirements, muffler 170 may be omitted from second pipe section 122. This can reduce the failure rate of exhaust pipe 120 and lower vehicle production costs.

[0074] A second aspect of the present invention provides a vehicle comprising the vehicle body structure 100 of any of the aforementioned embodiments. The vehicle in this embodiment may be a range-extended electric vehicle, a hybrid electric vehicle, a fuel cell electric vehicle, a hydrogen engine vehicle, or the like. The vehicle may further include an engine 300 and a rear subframe assembly 200. The engine 300 is mounted on the vehicle body structure 100, and the exhaust end of the engine 300 is connected to the first pipe section 121, so that exhaust gas from the engine 300 is sequentially discharged through the first pipe section 121, the exhaust passage 130, and the second pipe section 122 to the exterior of the vehicle. The rear subframe assembly 200 is mounted below the vehicle body structure 100 and may include various components, such as a subframe and a suspension system. The detailed structure of the rear subframe assembly 200 can be referenced to the relevant description of the existing rear subframe assembly 200 and will not be repeated here. It should be noted that other vehicle structures, such as the power system and control system, can also be referenced to the relevant description of the existing vehicle structures and will not be repeated here. By adopting the above-mentioned vehicle body structure 100 on the vehicle, the installation space occupied by the exhaust pipe 120 at the bottom of the vehicle body can be reduced, the passability of the vehicle bottom can be improved, and the structural design of the vehicle bottom can be made more compact, making it easier to install structures such as the rear subframe assembly 200 below the vehicle body structure 100.

[0075] The vehicle body structure provided by the present invention provides an exhaust channel on the rear longitudinal beam, and connects the exhaust channel to the first pipe section and the second pipe section on the exhaust pipe, so that the rear longitudinal beam can serve as part of the exhaust pipe. Therefore, there is no need to set up an exhaust pipe below the rear longitudinal beam, that is, below the vehicle body structure. As a result, the installation height of the exhaust pipe on the vehicle body structure can be raised as a whole, so that the installation position of the exhaust pipe is no longer the lowest point of the entire vehicle, thereby increasing the ground clearance of the entire vehicle and improving the vehicle's passability. At the same time, since the ground clearance of the exhaust pipe is increased, the probability of the exhaust pipe colliding with objects on the ground and causing damage to the exhaust pipe can also be reduced, thereby increasing the service life of the exhaust pipe. Therefore, the present invention effectively overcomes some practical problems in the prior art and has high utilization value and significance.

[0076] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.

Claims

1. A vehicle body structure, characterized in that: include: A vehicle body, the vehicle body including a rear longitudinal beam extending in a front-rear direction of the vehicle body; An exhaust pipe comprising a first pipe section and a second pipe section Wherein, the rear longitudinal beam is provided with an exhaust passage, and the exhaust passage is connected with the first pipe section and the second pipe section.

2. The vehicle body structure according to claim 1, characterized in that: The rear longitudinal beam is provided with a recessed portion, which is recessed toward a side away from the ground for accommodating the rear subframe assembly.

3. The vehicle body structure according to claim 1, wherein: The rear longitudinal member includes a first longitudinal member and a second longitudinal member spaced apart from each other in a transverse direction of the vehicle body, and at least one of the first longitudinal member and the second longitudinal member is provided with an exhaust passage.

4. The vehicle body structure according to claim 3, characterized in that: The first longitudinal beam and / or the second longitudinal beam comprises a hollow cavity, and the hollow cavity forms the exhaust channel.

5. The vehicle body structure according to claim 1, wherein: An air inlet connector and an air outlet connector are respectively provided at both ends of the exhaust channel. One of the air inlet connector and the air outlet connector is connected to the first pipe section, and the other is connected to the second pipe section.

6. The vehicle body structure according to claim 5, characterized in that: The air inlet connector and the air outlet connector are respectively arranged on both sides of the exhaust passage along the transverse direction of the vehicle body.

7. The vehicle body structure according to claim 6, characterized in that: The air inlet connector is arranged on a wall of the exhaust passage facing the interior of the vehicle body, and the air outlet connector is arranged on a wall of the exhaust passage facing the exterior of the vehicle body.

8. The vehicle body structure according to claim 1, wherein: The cross section of the exhaust passage is larger than the cross section of the exhaust line.

9. The vehicle body structure according to claim 1, wherein: Along the length direction of the longitudinal beam, the exhaust passage includes at least one bent section.

10. The vehicle body structure according to claim 1, wherein: A partition is provided in the exhaust channel for changing the direction of airflow in the exhaust channel, and the partition is connected to the wall of the exhaust channel.

11. The vehicle body structure according to claim 10, wherein: The wall of the exhaust passage and / or the partition are / is provided with a sound absorbing structure.

12. The vehicle body structure according to claim 10, wherein: A plurality of partitions are provided, and the plurality of partitions are spaced apart along the length direction of the exhaust passage.

13. The vehicle body structure according to claim 12, wherein: A plurality of partitions are arranged at intervals on two opposite side walls of the exhaust passage.

14. The vehicle body structure according to claim 10, wherein: A through hole adapted to the partition is provided on the wall of the exhaust channel, and the partition is inserted into the interior of the exhaust channel through the through hole.

15. The vehicle body structure according to claim 14, characterized in that: The partition is arranged to be inclined with respect to a cross section of the exhaust passage at a corresponding position along an insertion direction of the through hole.

16. A vehicle, characterized in that: The vehicle body structure comprises the vehicle body structure according to any one of claims 1 to 15.

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