Exhaust system and vehicle
By introducing limiting parts into the exhaust system and using the combined structure of the bracket and elastic block, the problem of easy collision between the exhaust pipe and the vehicle body parts is solved, and the effect of reducing abnormal noise and improving reliability is achieved.
Patent Information
- Application Number
- CN202421830164.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In hybrid vehicles, the exhaust pipe and the rear drive motor or the rear subframe are prone to collision, causing abnormal collisions and noise, affecting the service life of the exhaust pipe and related parts.
An exhaust system is designed, including an exhaust pipe, a muffler and a limiting member. The limiting member is composed of a bracket and an elastic block, which is connected to the exhaust pipe or muffler. The elastic block has a stopper and the stopper contacts the components on the lower side of the vehicle body to prevent further movement of the exhaust pipe or muffler.
It effectively avoids collision between the exhaust pipe or muffler and the car body, reduces the occurrence of abnormal noise, improves the reliability of the exhaust system, simplifies the manufacturing process, and reduces costs.
Smart Images
Figure CN223035131U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, and particularly relates to an exhaust system and a vehicle. Background Art
[0002] With the development of new energy vehicles, the number of hybrid vehicles is gradually increasing. The layout of the whole vehicle needs to consider the layout of parts such as battery packs, rear drive motors, and subframes, as well as the ground clearance requirements. The layout of the exhaust pipe has become more difficult and complex. In order to meet the distance requirement between the exhaust pipe and the ground downward, the clearance between the exhaust pipe and parts such as the rear drive motor upward is often relatively close. During the driving process of the vehicle, especially under certain extreme working conditions, the exhaust pipe is prone to collide with the rear drive motor or the rear subframe, etc., generating collision abnormal noises, which affects the service life of the exhaust pipe and related parts. To solve the above problems, an airbag is provided on the exhaust pipe in the related art. The setting of the airbag makes the manufacturing process of the exhaust pipe complex, the cost high, and the reliability poor. Summary of the Utility Model
[0003] Therefore, the utility model provides an exhaust system to reduce the cost of the exhaust system and the risk of collision abnormal noises.
[0004] The exhaust system of the utility model includes an exhaust pipe, a muffler, and a limiting member. The exhaust pipe is connected to the muffler; the limiting member includes a bracket and an elastic block. The bracket is connected to the exhaust pipe or the muffler, the elastic block is connected to the bracket, and the elastic block has a stopping portion.
[0005] Optionally, the bracket includes a plate body and a first flanging. The elastic block is arranged on one side in the thickness direction of the plate body and is connected to the plate body. The first flanging is bent in a direction away from the elastic block and is connected to the plate body.
[0006] Optionally, the bracket further includes a second flanging. The second flanging is parallel to the plate body and is connected to the first flanging. The second flanging is connected to the exhaust pipe or the muffler.
[0007] Optionally, one end of the bracket is connected to the exhaust pipe or the muffler, and the other end of the bracket is suspended and connected to the elastic block.
[0008] Optionally, the elastic block includes a connected fixed section and a deformed section. The fixed section is connected to the bracket, and the end of the deformed section away from the fixed section forms the stopping portion. The cross-sectional area of the deformed section is smaller than the cross-sectional area of the fixed section.
[0009] Optionally, at least part of the cross-sectional area of the deformed section gradually decreases in a direction away from the fixed section.
[0010] Optionally, the bracket is a metal bracket, and the elastic block is a rubber block.
[0011] The present utility model also provides a vehicle.
[0012] The vehicle of the present utility model includes a vehicle body and an exhaust system. A first member is provided on the lower side of the vehicle body. The exhaust system is the exhaust system described in any one of the above, at least one of the exhaust pipe and the muffler is connected to the vehicle body, and the abutting portion abuts against the first member.
[0013] Optionally, the elastic block is in interference fit with the first member.
[0014] Optionally, a second member is further provided on the lower side of the vehicle body. Both the first member and the second member are provided on the upper side of the exhaust system. The abutting portion abuts upward against the lower surface of the first member, and the lower surface of the first member is arranged lower than the lower surface of the second member.
[0015] For the exhaust system of the present utility model, by connecting the bracket to the exhaust pipe or the muffler, the connection between the limiting member and the exhaust pipe or the muffler is realized. When the exhaust system is installed on a vehicle for use, the abutting portion of the elastic block abuts against the components on the lower side of the vehicle body. When the exhaust system shakes during vehicle driving, the elastic block is compressed and no longer changes after being compressed to a certain extent, so as to prevent the exhaust pipe or the muffler from further moving, thereby avoiding abnormal noises caused by the collision between the exhaust pipe or the muffler and the vehicle body. For the exhaust system of the present utility model, only the connection between the bracket and the exhaust pipe or between the bracket and the muffler, and the connection between the elastic block and the bracket need to be carried out. The manufacturing process is simple and the cost is relatively low. Moreover, the reliability of the elastic block is good, which can effectively improve the reliability of the exhaust system. Description of the Drawings
[0016] Figure 1 is a schematic structural diagram of an exhaust system according to an embodiment of the present utility model.
[0017] Figure 2 is a schematic structural diagram of a bracket in the exhaust system according to an embodiment of the present utility model.
[0018] Figure 3 is a schematic structural diagram of an elastic block in the exhaust system according to an embodiment of the present utility model.
[0019] Figure 4 is a schematic structural diagram of an elastic block in the exhaust system according to another embodiment of the present utility model.
[0020] Figure 5 is a schematic structural diagram of an elastic block in the exhaust system according to still another embodiment of the present utility model.
[0021] Figure 6It is a diagram of the use state of the exhaust system according to an embodiment of the present utility model.
[0022] Figure 7 It is a schematic diagram of a partial structure of the exhaust system according to an embodiment of the present utility model.
[0023] Figure 8 It is a schematic diagram of the structure of the exhaust system according to an embodiment of the present utility model before shaking occurs when it is in use state.
[0024] Figure 9 It is a schematic diagram of the structure of the exhaust system according to an embodiment of the present utility model after shaking occurs when it is in use state.
[0025] Reference numerals:
[0026] 100. Exhaust system;
[0027] 1. Exhaust pipe; 11. First hook; 12. Bellows;
[0028] 2. Limiting member; 21. Bracket; 211. Plate body; 212. First flanging; 213. Second flanging; 22. Elastic block; 221. Fixed section; 222. Deformed section; 2221. Abutting portion;
[0029] 3. Muffler; 31. Second hook;
[0030] 4. Vehicle body; 41. First lifting lug; 42. Second lifting lug;
[0031] 5. First piece;
[0032] 6. Second piece;
[0033] 7. Engine. Detailed implementation manners
[0034] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.
[0035] As Figure 1 shown, the exhaust system 100 of the embodiment of the present utility model includes an exhaust pipe 1, a muffler 3 and a limiting member 2. The exhaust pipe 1 is connected to the muffler 3. The limiting member 2 includes a bracket 21 and an elastic block 22. The bracket 21 is connected to the exhaust pipe 1 or the muffler 3. The elastic block 22 is connected to the bracket 21. The elastic block 22 has an abutting portion 2221.
[0036] As Figure 6As shown, in the exhaust system 100 of the embodiment of the present utility model, by connecting the bracket 21 to the exhaust pipe 1 or the muffler 3, the connection between the limiting member 2 and the exhaust pipe 1 or the muffler 3 is realized. When the exhaust system 100 is installed on a vehicle for use, the abutting portion 2221 of the elastic block 22 abuts against the components on the lower side of the vehicle body 4. When the exhaust system 100 shakes during vehicle driving, the elastic block 22 is compressed and no longer changes after being compressed to a certain extent, so as to prevent the exhaust pipe 1 or the muffler 3 from moving further, thereby avoiding abnormal noise generated by the collision between the exhaust pipe 1 or the muffler 3 and the vehicle body 4. For the exhaust system 100 of the embodiment of the present utility model, only the connections between the bracket 21 and the exhaust pipe 1 or between the bracket 21 and the muffler 3, and between the elastic block 22 and the bracket 21 need to be made, the manufacturing process is simple, and the cost is relatively low; and the reliability of the elastic block 22 is good, which can effectively improve the reliability of the exhaust system 100.
[0037] Therefore, the exhaust system 100 of the embodiment of the present utility model has the advantages of simple manufacturing process, relatively low cost, and good reliability.
[0038] In some embodiments, the bracket 21 is a metal frame, and the elastic block 22 is a rubber block.
[0039] For example, the material of the bracket 21 is stainless steel, and the material of the elastic block 22 is (EPDM, ethylene propylene diene monomer rubber) or silicone rubber.
[0040] The metal frame has good rigidity, which can not only ensure the connection reliability between the bracket 21 and the exhaust pipe 1 or the muffler 3, but also provide good support for the elastic block 22. The rubber block has the advantages of good elasticity, good anti-aging property, and good impact resistance. By setting the elastic block 22 as a rubber block, the reliability of the elastic block 22 can be further improved, and the risk of abnormal noise generated by collision of the exhaust system 100 can be further reduced.
[0041] Optionally, the elastic block 22 is vulcanized and fixed to the bracket 21. In other words, the elastic block 22 is fixed to the bracket 21 by vulcanization.
[0042] The elastic block 22 being vulcanized and fixed to the bracket 21 can effectively improve the connection reliability between the elastic block 22 and the bracket 21, and improve the reliability of the exhaust system 100.
[0043] Of course, in some other embodiments, the elastic block 22 can also be connected to the bracket 21 by bonding or screws, etc.
[0044] Optionally, the bracket 21 is a sheet metal part.
[0045] By setting the bracket 21 as a sheet metal part, it is beneficial to reduce the cost of the bracket 21, and thus beneficial to reduce the cost of the exhaust system 100.
[0046] Optionally, asFigure 2 As shown, the bracket 21 includes a plate body 211 and a first flanging 212. The elastic block 22 is provided on one side in the thickness direction of the plate body 211 and is connected to the plate body 211. The first flanging 212 is bent in a direction away from the elastic block 22 and is connected to the plate body 211.
[0047] For example, as Figure 2 shown, the first flangings 212 are provided on both sides in the width direction of the plate body 211, and the first flangings 212 are perpendicular to the plate body 211.
[0048] By setting the bracket 21 to include the plate body 211 and connecting the elastic block 22 to the plate body 211, the connection area between the elastic block 22 and the bracket 21 can be increased, and the connection reliability between the elastic block 22 and the bracket 21 can be improved; by providing the first flanging 212, the stiffness of the bracket 21 can be increased, and deformation of the bracket 21 can be avoided when the exhaust system 100 shakes, thereby further reducing the risk of collision abnormal noise generated by the exhaust system 100.
[0049] In some other embodiments, the bracket 21 can also be a metal rod. For example, the bracket 21 is a stainless steel rod.
[0050] Optionally, as Figure 2 shown, the bracket 21 further includes a second flanging 213. The second flanging 213 is parallel to the plate body 211 and is connected to the first flanging 212. The second flanging 213 is connected to the exhaust pipe 1 or the muffler 3.
[0051] For example, the second flanging 213 is welded to the exhaust pipe 1.
[0052] By providing the second flanging 213, the connection area between the bracket 21 and the exhaust pipe 1 can be increased, thereby improving the connection reliability between the limiting member 2 and the exhaust pipe 1 and improving the reliability of the exhaust system 100.
[0053] Optionally, as Figures 3 to 5 shown, the elastic block 22 includes a connected fixed section 221 and a deformed section 222. The fixed section 221 is connected to the bracket 21. One end of the deformed section 222 away from the fixed section 221 forms a stopping portion 2221. The cross-sectional area of the deformed section 222 is smaller than the cross-sectional area of the fixed section 221.
[0054] Wherein, the cross-section of the deformed section 222 means: the section of the deformed section 222 intercepted by a plane parallel to the deformation direction of the elastic block 22. The cross-section of the fixed section 221 means: the section of the fixed section 221 intercepted by a plane parallel to the deformation direction of the elastic block 22.
[0055] By setting the cross-sectional area of the deformation section 222 to be smaller than that of the fixed section 221, on the one hand, the cross-sectional area of the deformation section 222 is small, and it is more likely to deform under force, improving the buffering effect of the limiting member 2 on the exhaust pipe 1 or the muffler 3; on the other hand, the cross-sectional area of the fixed section 221 is large, and the connection area with the bracket 21 is larger, improving the connection reliability between the elastic block 22 and the bracket 21.
[0056] Optionally, as Figure 4 and Figure 5 shown, at least part of the cross-sectional area of the deformation section 222 gradually decreases in the direction away from the bracket 21.
[0057] It can be understood that when the exhaust system 100 shakes, the extrusion force of the vehicle body 4 on the elastic block 22 is transmitted from the abutting portion 2221 of the deformation section 222 in the direction towards the bracket 21, so that the part of the deformation section 222 closer to the abutting portion 2221 preferentially undergoes compressive deformation. During the extrusion deformation of the elastic block 22, the stiffness of the elastic block 22 gradually increases; and the larger the cross-sectional area of the deformation section 222, the faster the stiffness of the elastic block 22 changes. The greater the stiffness of the elastic block 22, the worse the elasticity of the elastic block 22, and the greater the force to prevent the exhaust pipe 1 or the muffler 3 from moving, reducing the risk of collision abnormal noise of the exhaust system 100.
[0058] By setting at least part of the cross-sectional area of the deformation section 222 to gradually decrease in the direction away from the bracket 21, during the extrusion deformation of the deformation section 222, the stiffness of the elastic block 22 increases faster with the increase of the deformation amount, and the risk of collision abnormal noise of the exhaust system 100 can be more effectively reduced.
[0059] In other embodiments, as Figure 3 shown, the cross-sectional area of the deformation section 222 is equal everywhere.
[0060] Optionally, the cross-section of the deformation section 222 is trapezoidal or elliptical.
[0061] By setting the cross-section of the deformation section 222 to be trapezoidal or elliptical, it is convenient for the processing and manufacturing of the deformation section 222, thereby facilitating the processing and manufacturing of the exhaust system 100 and further reducing the cost of the exhaust system 100.
[0062] Optionally, as Figures 7 to 9 shown, one end of the bracket 21 is connected to the exhaust pipe 1 or the muffler 3, and the other end of the bracket 21 is overhanging and connected to the elastic block 22.
[0063] For example, as Figure 7As shown, the exhaust pipe 1 extends in the front-rear direction, the bracket 21 extends in the left-right direction, the left end of the bracket 21 is connected to the exhaust pipe 1, and the right end of the bracket 21 is connected to the elastic block 22. Among them, the up-down direction and the left-right direction are as Figures 7 to 9 shown.
[0064] By designing the bracket 21 as described above, the elastic block 22 can abut against components other than directly above the exhaust pipe 1 or the muffler 3, facilitating the selection of the component abutted by the elastic block 22 according to requirements and facilitating the layout and installation of the exhaust system 100.
[0065] As Figure 6 shown, the vehicle of the embodiment of the present disclosure includes a vehicle body 4 and the exhaust system 100 described in any one of the above embodiments. At least one of the exhaust pipe 1 and the muffler 3 is connected to the vehicle body 4, and the abutting portion 2221 abuts against the first component 5.
[0066] Among them, the first component 5 can be a component with a relatively large stiffness such as a vehicle body beam or a subframe.
[0067] In some embodiments, as Figure 6 shown, the exhaust pipe 1 is provided with a first hook 11, the vehicle body 4 is provided with a first lug 41, and the first hook 11 is hook-connected to the first lug 41. The vehicle further includes a muffler 3 and an engine 7. The muffler 3 is provided with a second hook 31, the vehicle body 4 is provided with a second lug 42, and the second hook 31 is hook-connected to the second lug 42; the exhaust pipe 1 is provided with a bellows 12, and the bellows 12 is connected to the engine 7. Among them, the first lug 41 and the second lug 42 can be rubber lugs.
[0068] By hook-connecting the first hook 11 to the first lug 41, the second hook 31 to the second lug 42, and the bellows 12 to the engine 7, the exhaust pipe 1 is suspended below the vehicle body 4. Under a relatively large acceleration, the exhaust pipe 1 or the muffler 3 of the exhaust system will generate a relatively large displacement. When the gap between the exhaust pipe 1 or the muffler 3 and the components below the vehicle body 4 is small (for example, less than 20 mm), the exhaust pipe 1 or the muffler 3 is likely to collide with the components below the vehicle body 4. By abutting the abutting portion 2221 of the limiting member 2 against the first component 5, the displacement magnitude of the exhaust pipe 1 or the muffler 3 can be limited, thereby avoiding abnormal noise caused by the collision between the exhaust pipe 1 or the muffler 3 and the components below the vehicle body 4.
[0069] In some embodiments, the elastic block 22 is in interference fit with the first component 5. That is to say, when installing the exhaust system 100, when the abutting portion 2221 abuts against the first component 5, the elastic block 22 is in a compressed state.
[0070] Considering the assembly and manufacturing errors of the exhaust system 100, the interference fit between the elastic block 22 and the first part 5 can ensure that the abutting portion 2221 of the elastic block 22 abuts against the first part 5, avoiding a gap between the abutting portion 2221 of the elastic block 22 and the first part 5, and further reducing the risk of collision noise generated by the exhaust system 100.
[0071] In some embodiments, as Figures 6 to 9 shown, a second part 6 is further provided on the lower side of the vehicle body 4. Both the first part 5 and the second part 6 are provided on the upper side of the exhaust system 100. The abutting portion 2221 abuts upward against the lower surface of the first part 5, and the lower surface of the first part 5 is arranged lower than the lower surface of the second part 6. Among them, the second part 6 can be a drive motor, a subframe, etc.
[0072] For example, the distance between the lower surface of the first part 5 and the exhaust pipe 1 is L0, and the distance between the lower surface of the second part 6 and the exhaust pipe 1 is H0.
[0073] It can be understood that since the lower surface of the first part 5 is arranged lower than the lower surface of the second part 6, the first part 5 is more likely to collide with the exhaust pipe 1 or the muffler 3 relative to the second part 6. By abutting the abutting portion 2221 against the first part 5 with a lower lower surface, the displacement of the exhaust pipe 1 or the muffler 3 can be more effectively restricted, and the risk of collision noise generated by the exhaust system 100 can be further reduced.
[0074] As Figure 7 shown, after the exhaust system 100 is installed on the vehicle, when the vehicle is not running, the distance between the lower surface of the first part 5 and the exhaust pipe 1 is L1, and the distance between the lower surface of the second part 6 and the exhaust pipe 1 is H1. When the exhaust system 100 shakes in the up and down direction during vehicle driving, the elastic block 22 is compressed in the up and down direction. The distance between the lower surface of the first part 5 and the exhaust pipe 1 is L2, and the distance between the lower surface of the second part 6 and the exhaust pipe 1 is H2. Among them, L1 is less than H1, L2 is less than L1, and H2 is greater than L2.
[0075] Optionally, H1 is less than or equal to 20 mm, and L2 is greater than 5 mm.
[0076] In other embodiments, the lower surface of the first part 5 can also be arranged lower than the exhaust system 100, and the abutting portion 2221 abuts against the side surface of the first part 5.
[0077] For example, the first part 5 is arranged on the left side of the exhaust system 100, and the abutting portion 2221 abuts leftward against the right side surface of the first part 5. At this time, when the exhaust system 100 shakes in the left and right direction during vehicle driving, the abutting portion 2221 is used to abut against the first part 5 to limit the displacement of the exhaust pipe 1 or the muffler 3 in the left and right direction, avoiding the generation of collision noise by the exhaust system 100.
[0078] When specifically installing the exhaust system 100, the limiting member 2 should be as close as possible to the potential impact point to be protected, so as to avoid a large bending moment being generated at the potential impact point relative to the limiting point after the limiting member 2 is limited, causing the potential impact point to be impacted. For example, the second member 6 is the potential impact point, and the first member 5 is arranged close to the second member 6 to prevent the exhaust pipe 1 from colliding with the second member 6.
[0079] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.
Claims
1. An exhaust system, characterized in that: include: an exhaust pipe and a muffler, wherein the exhaust pipe is connected to the muffler; The limiting member includes a bracket and an elastic block, the bracket is connected to the exhaust pipe or the muffler, the elastic block is connected to the bracket, and the elastic block has a stop portion.
2. The exhaust system according to claim 1, characterized in that The bracket includes a plate body and a first flange, the elastic block is arranged on one side of the plate body in the thickness direction and connected to the plate body, and the first flange is bent along a direction away from the elastic block and connected to the plate body.
3. The exhaust system according to claim 2, characterized in that: The bracket further includes a second flange, the second flange is parallel to the plate body and connected to the first flange, and the second flange is connected to the exhaust pipe or the muffler.
4. The exhaust system according to claim 1, characterized in that One end of the bracket is connected to the exhaust pipe or the muffler, and the other end of the bracket is cantilevered and connected to the elastic block.
5. The exhaust system according to claim 1, characterized in that The elastic block includes a fixed section and a deformable section connected to each other, the fixed section is connected to the bracket, one end of the deformable section away from the fixed section forms the stop portion, and the cross-sectional area of the deformable section is smaller than the cross-sectional area of the fixed section.
6. The exhaust system according to claim 5, characterized in that The cross-sectional area of at least part of the deformation section gradually decreases in a direction away from the fixing section.
7. The exhaust system according to any one of claims 1 to 6, characterized in that: The bracket is a metal frame, and the elastic block is a rubber block.
8. A vehicle, characterized in that: include: a vehicle body, wherein a first member is provided on a lower side of the vehicle body; An exhaust system, wherein the exhaust system is the exhaust system according to any one of claims 1 to 7, wherein at least one of the exhaust pipe and the muffler is connected to the vehicle body, and the stop portion stops at the first piece.
9. The vehicle according to claim 8, characterized in that The elastic block is interference fit with the first piece.
10. The vehicle according to claim 8, characterized in that A second piece is also provided on the lower side of the vehicle body, the first piece and the second piece are both provided on the upper side of the exhaust system, the abutment portion abuts upward against the lower surface of the first piece, and the lower surface of the first piece is provided lower than the lower surface of the second piece.