Exhaust silencer and vehicle

Abstract

The utility model provides an exhaust silencer and a vehicle, and belongs to the technical field of vehicle parts, a shell of the exhaust silencer comprises a main body wound into a barrel shape and end plates connected to the two ends of the main body respectively. Wherein after the main body is wound, the two connected edges are mutually hooked and connected to form a lock seam structure which is meshed together, and the lock seam structure is welded with the outer wall of the main body, so that a welding bead which is arranged along the extension direction of the lock seam structure is formed. According to the exhaust silencer, after the main body of the shell is wound, the two connected edges are connected in a hooked mode to form the lock seam structure, the connection tightness between the edges of the main body can be improved, and better structural strength and compression strength can be provided. Besides, the lock seam structure and the outer wall of the main body are welded together, so that the sealing performance and the firmness degree of the connecting part can be further enhanced, the pressure resistance degree of the shell of the silencer can be improved, and the silencer can be effectively prevented from being exploded due to large internal pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle parts technical field, especially a kind of exhaust muffler, simultaneously, the utility model also relates to a kind of vehicle with the exhaust muffler. BACKGROUND

[0002] Vehicle engine in normal operation, fuel combustion will generate a certain amount of water, usually set drain hole in the bottom of muffler. Under normal circumstances, water will be under the joint action of exhaust pressure and gravity, smoothly from drain hole and tail pipe discharge. But in extremely cold environment, self-starting device makes engine frequent automatic starting, and each starting time is short, and idling exhaust temperature is at a low level, which leads to condensate water continuously accumulated in the bottom of muffler and gradually frozen into ice, and cannot be naturally thawed, eventually causing drain hole and tail pipe to be completely blocked by ice. When the vehicle starts again, the pressure in the muffler rises sharply, exceeding its limit, and then causing the muffler to burst. SUMMARY

[0003] Therefore, the utility model aims at providing an exhaust muffler to improve the pressure strength of its shell, which can effectively prevent the muffler from bursting under ice blocking.

[0004] To achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] An exhaust muffler, the shell of the exhaust muffler includes a main body wound into a cylindrical shape, and end plates connected to the two ends of the main body respectively.

[0006] The two edges of the main body after winding are connected to each other and form a lock seam structure engaged together, and the lock seam structure is welded with the outer wall of the main body to form a weld along the extension direction of the lock seam structure.

[0007] Further, the weld is a plurality of segments arranged at intervals along the extension direction of the lock seam structure, and the number of segments of the weld satisfies: L≥n*D.

[0008] Wherein, L is the extension length of the lock seam structure, n is the number of segments of the weld, and D is the lower limit design value of the length of the shell.

[0009] Further, the shell is provided with an electric heating part, which is used for heating the gas entering the exhaust muffler.

[0010] Further, the shell is provided with a detection part for detecting the temperature of the gas.

[0011] Further, the shell is provided with a through hole for the wire harness of the electric heating part to pass through, and a mounting seat fixed on the shell is arranged at the through hole;

[0012] The mounting seat is provided with a mounting cavity communicated with the through hole, the wire harness passes through the mounting cavity and is positioned in the mounting seat by a positioning part.

[0013] Further, the positioning part comprises a positioning seat fixed on the wire harness and a positioning groove arranged in the mounting seat, and the positioning seat is provided with a positioning block protruding radially outward, and the mounting seat is further provided with an avoiding groove communicated with the positioning groove;

[0014] The positioning block can enter the positioning groove from the avoiding groove, and the positioning seat can be rotated relative to the mounting seat to enable the positioning block to be clamped in the positioning groove.

[0015] Further, the wire harness is provided with a fixing seat capable of sliding along the wire harness;

[0016] When the positioning block is clamped in the positioning groove, the fixing seat can be connected to the mounting seat and constrain the positioning seat in the mounting seat.

[0017] Further, the fixing seat is connected to the mounting seat through a screwing structure.

[0018] Further, the inner wall of the main body is provided with an embedding groove, the electric heating part has an electric heating sheet, and the electric heating sheet is embedded in the embedding groove.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The exhaust muffler, by the two edges of the main body of the shell being connected by hooking each other to form a lock seam structure, can not only increase the connection tightness between the edges of the main body to prevent gas leakage, but also provide better structural strength and pressure resistance; in addition, by welding the lock seam structure and the outer wall of the main body together and forming a weld along the extension direction of the lock seam structure, the sealing property and the firmness of the connection part can be further strengthened, so that the pressure resistance of the shell of the muffler can be improved, and the muffler can be effectively prevented from exploding due to high internal pressure.

[0021] In addition, the weld is arranged in multiple sections along the extension direction of the lock seam structure, which can not only improve the welding efficiency, but also effectively disperse stress concentration and reduce heat accumulation generated by welding, so that the heat affected zone is relatively dispersed, which helps to better control the thermal deformation of the muffler main body during welding.

[0022] Secondly, by setting the electric heating part in the shell, the electric heating part can improve the gas temperature by heating the entering gas, which can not only melt the ice, but also effectively avoid the condensation of liquid water and ice in the low temperature area inside the muffler, thereby effectively preventing the problems of muffler drain hole blockage, shell burst and the like caused by ice.

[0023] By setting the detection part for detecting the gas temperature in the shell, the abnormal condition of the exhaust system can be found in time, and accurate feedback control can be provided for the operation of the electric heating part.

[0024] Furthermore, the positioning part includes a positioning seat provided with a positioning block and a positioning groove in the mounting seat, the positioning block only needs to be inserted into the avoidance groove, and then the positioning seat is gently rotated, so that the positioning block is clamped in the positioning groove, the wire harness is firmly fixed, complex tools or operation skills are not required, the wire harness can be easily disassembled and assembled in the mounting seat, and the disassembly and assembly efficiency is improved.

[0025] By setting the fixing seat which can slide on the wire harness, the fixing seat can be connected with the mounting seat, and in the connected state, the fixing seat can constrain the positioning seat and stably keep it in the mounting seat, so that the fixing stability of the wire harness in the mounting seat is further enhanced, and the working reliability of the electric heating is ensured.

[0026] In addition, the fixing seat is connected to the mounting seat through the screwing structure, the screwing structure can provide strong connection force, the fixing seat can be stably connected to the mounting seat under various working conditions, the loosening or falling off of the fixing seat caused by vehicle vibration and bumping can be effectively prevented, the constraint effect on the wire harness is continuously and effectively ensured, and the stable operation of the electric heating part of the exhaust muffler is maintained.

[0027] The embedding groove is arranged on the inner wall of the main body, and the electric heating sheet of the electric heating part is embedded in the embedding groove, so that the electric heating sheet has a large heating area, the heat utilization efficiency is effectively improved, the ice can be quickly melted, the stability and reliability of the electric heating sheet in the muffler are enhanced, the additional occupation of the internal space of the muffler is avoided, and interference with other structures is prevented.

[0028] Another purpose of the utility model is to provide a vehicle, wherein the vehicle is provided with the exhaust muffler.

[0029] The vehicle, through the exhaust silencer as described above, can effectively prevent the silencer from cracking due to the large internal pressure, and is beneficial to ensure the normal operation of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The embodiments of the application will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

[0031] Figure 1 A structure schematic view of the exhaust silencer according to the embodiment of the application;

[0032] Figure 2 A structure schematic view of the structure schematic view of the exhaust silencer according to the embodiment of the application in another view;

[0033] Figure 3 A structure schematic view of the structure schematic view of the exhaust silencer according to the embodiment of the application in still another view;

[0034] Figure 4 A sectional view of the shell of the exhaust silencer according to the embodiment of the application along the line A-A;

[0035] Figure 5 A Figure 4 Enlarged view of part B;

[0036] Figure 6 A connection state view of the electric heating sheet and the wire harness according to the embodiment of the application;

[0037] Figure 7 A Figure 6 Enlarged view of part C;

[0038] Figure 8 An assembly state view between the mounting seat, the fixing seat and the positioning seat according to the embodiment of the application;

[0039] Figure 9 A structure schematic view of the mounting seat according to the embodiment of the application;

[0040] Figure 10 A structure schematic view of the mounting seat according to the embodiment of the application in another view;

[0041] Figure 11 An axial sectional view of the mounting seat according to the embodiment of the application;

[0042] Figure 12 An assembly state view of the fixing seat and the positioning seat according to the embodiment of the application.

[0043] Marked for explanation:

[0044] 1, main body; 2, welding; 3, wire harness; 4, mounting seat; 5, fixing seat; 6, electric heating sheet; 7, temperature sensor; 8, positioning seat;

[0045] 101, lock seam structure; 401, positioning groove; 402, avoiding groove; 403, convex ring;

[0046] 801, positioning block. DETAILED DESCRIPTION

[0047] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0048] In the description of the utility model, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0049] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms "mounting", "connecting", "connecting", "connecting piece" should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with the specific situation.

[0050] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0051] The exhaust muffler in the prior art is easily completely blocked by ice due to the drain hole and tail pipe in extremely cold environment. When the vehicle starts again, the pressure in the muffler rises sharply, exceeding the limit it can withstand, and then causing the muffler to burst. Therefore, the embodiment proposes a new exhaust muffler, the shell of which comprises a main body 1 wound into a cylindrical shape, and end plates connected at both ends of the main body 1.

[0052] Among them, the two edges of the main body 1 after winding are connected with each other and form a lock seam structure 101 engaged together, and the lock seam structure 101 is welded together with the outer wall of the main body 1, and the welding 2 is arranged along the extension direction of the lock seam structure 101.

[0053] The shell body 1 of the embodiment is wound to form a lock seam structure 101 by hooking the two edges of the body 1 that are connected to each other, which not only increases the tightness of the connection between the edges of the body 1 to prevent gas leakage, but also provides better structural strength and pressure resistance. In addition, by welding the lock seam structure 101 with the outer wall of the body 1 and forming a weld 2 arranged along the extension direction of the lock seam structure 101, the sealing and firmness of the connection part can be further strengthened, thereby improving the pressure resistance of the shell of the muffler, and effectively preventing the muffler from exploding due to high internal pressure.

[0054] Based on the above overall introduction, an exemplary structure of the exhaust muffler of the embodiment is described with reference to Figures 1 to 5 In the figure, the structure of the shell is mainly shown, and other structures of the exhaust muffler can refer to the prior art. In addition, as a specific embodiment, as shown in Figure 4 The cross section of the shell is generally long strip-shaped. In addition, the exhaust pipe is arranged on one side of the shell, and the exhaust pipe is arranged at both ends of the shell in the length direction. It should be noted that the position and number of the inlet pipe and the outlet pipe can be adjusted according to actual needs.

[0055] As a preferred embodiment, the weld 2 of the embodiment is arranged in multiple segments along the extension direction of the lock seam structure 101, and the number of segments of the weld 2 satisfies: L≥n*D. Wherein, L is the extension length of the lock seam structure 101, n is the number of segments of the weld 2, and D is the lower limit design value of the preset shell length. In addition, the length of each segment of the weld 2 can be determined according to actual needs, for example, the length of each segment of the weld 2 can be set to 110mm. In addition, for the lower limit design value D of the preset shell length, the lower limit design value of the shell length of the exhaust muffler commonly used in the art is generally 230mm.

[0056] In the embodiment, by arranging the weld 2 in multiple segments along the extension direction of the lock seam structure 101, not only the welding efficiency can be improved, but also the stress concentration can be effectively dispersed by the multiple segments of the weld 2, and the heat accumulation generated by welding can be reduced, so that the heat affected zone is relatively dispersed, which helps to better control the thermal deformation of the muffler body 1 during welding.

[0057] In addition, the shell can be provided with an electric heating part for heating the gas entering the exhaust muffler. By providing the electric heating part, the electric heating part can melt the ice inside the shell by heating the entering gas. In addition, the electric heating part can also increase the temperature of the gas, so that the water vapor remains in the gaseous state, which can effectively prevent the condensation of liquid water and ice in the low-temperature area inside the muffler, thereby effectively preventing the problems of muffler drain hole blockage, shell burst, etc. caused by ice. As a specific embodiment, the inner wall of the main body 1 is provided with an embedded groove (not shown in the figure), and the embedded groove can be formed by the main body 1 itself protruding outward. In addition, as shown in Figure 6 , the electric heating part has an electric heating sheet 6, and the electric heating sheet 6 is embedded in the embedded groove.

[0058] The electric heating part of the present embodiment adopts the form of an electric heating sheet 6. This sheet-shaped structure has a large surface area, which can more efficiently convert electrical energy into heat energy and dissipate heat to the surrounding gas. Embedding the electric heating sheet 6 in the embedded groove on the inner wall of the main body 1 can increase the heating area of the electric heating sheet 6, effectively improve the utilization efficiency of heat, and facilitate rapid melting of ice. In addition, it can also make the electric heating sheet 6 fully contact with the gas entering the shell, effectively prevent the water vapor from freezing and blocking the water exhaust hole due to the excessively low temperature of the exhaust gas in cold environments, and further prevent the shell from bursting. On the other hand, it can also enhance the stability and reliability of the electric heating sheet 6 inside the muffler, which helps to reduce electrical faults and safety hazards caused by loose or damaged parts. In addition, it can also avoid the additional occupation of space inside the muffler by the electric heating sheet 6, and prevent interference with other structures.

[0059] As a specific embodiment, as shown in Figure 2 and Figure 7 and Figure 8 , the shell is provided with a through hole through which the wire harness 3 of the electric heating part passes, and a mounting seat 4 fixed to the shell is provided at the through hole. In addition, the mounting seat 4 is provided with a mounting cavity communicating with the through hole, and the wire harness 3 passes through the mounting cavity and is positioned in the mounting seat 4 by the positioning part. This arrangement can fix and protect the wire harness 3 in all directions through the cooperation of the through hole, the mounting seat 4, the mounting cavity and the positioning part, effectively avoiding problems such as power interruption or instability of the electric heating part caused by loose, displacement or damage of the wire harness 3.

[0060] In addition, as shown in Figures 9 to 11 , as a preferred embodiment, the mounting seat 4 of the present embodiment is cylindrical as a whole and has a first end and a second end arranged oppositely, and the second end is inserted into the shell and connected with the shell by welding. In order to facilitate the installation of the positioning seat 8, as shown in Figure 9 and Figure 11As shown in FIG. 1, the opening of the first end of the mounting cavity is larger to facilitate the positioning seat 8 to enter, and the opening of the second end is smaller and is adapted to the wiring harness 3 to have a better sealing effect. In addition, to improve the mounting effect of the mounting seat 4 on the shell, as shown in FIG. 2, a protruding ring 403 is arranged on the first end of the fixing seat 5 and protrudes radially outward. Thus, when the second end of the mounting seat 4 is inserted into the through hole of the shell, the protruding ring 403 can abut against the shell to limit the insertion displacement of the mounting seat 4, and the protruding ring 403 can also be welded to the shell. Figure 11

[0061] As a preferred embodiment, the positioning part of the present embodiment includes the positioning seat 8 fixed on the wiring harness 3 and the positioning groove 401 arranged in the mounting seat 4, and the positioning seat 8 is provided with a radially outward protruding positioning block 801, and the mounting seat 4 is further provided with an avoiding groove 402 communicating with the positioning groove 401. The positioning block 801 can enter the positioning groove 401 through the avoiding groove 402, and the rotation of the positioning seat 8 relative to the mounting seat 4 can enable the positioning block 801 to be clamped in the positioning groove 401.

[0062] By designing the radially outward protruding positioning block 801 on the positioning seat 8 and arranging the avoiding groove 402 communicating with the positioning groove 401 in the mounting seat 4, the positioning block 801 can smoothly enter the positioning groove 401 through the avoiding groove 402 during the mounting process, and the problem of being unable to mount due to structural interference is avoided.

[0063] In combination with Figures 7 to 12 As a preferred embodiment, the positioning seat 8 is fixed on the wiring harness 3, the positioning groove 401 is arranged close to the second end of the mounting seat 4 and extends to the first end, and the positioning seat 8 is in a cylindrical shape. Thus, after the positioning block 801 enters the positioning groove 401 along the avoiding groove 402, the positioning block 801 can be disengaged from the avoiding groove 402 by rotating the positioning seat 8, so as to be clamped between the upper and lower side walls of the positioning groove 401, thereby achieving the preliminary positioning of the wiring harness 3. This structure does not require complex tools or operation skills, and when the wiring harness 3 needs to be disassembled for maintenance or replacement, the positioning seat 8 is rotated in the reverse direction to align the positioning block 801 with the avoiding groove 402, so that the wiring harness 3 can be easily taken out, thereby greatly improving the efficiency of mounting and dismounting and reducing the difficulty and time cost of maintenance.

[0064] As a further embodiment, as shown in Figure 7 and Figure 12 To further improve the fixing effect of the wiring harness 3, the wiring harness 3 is provided with the fixing seat 5 capable of sliding along the wiring harness 3, and when the positioning block 801 is clamped in the positioning groove 401, the fixing seat 5 can be connected to the mounting seat 4 and constrain the positioning seat 8 in the mounting seat 4.

[0065] ​In this embodiment, the connection of the fixing seat 5 and the mounting seat 4 and the constraint of the positioning seat 8 provide double protection for the fixation of the wire harness 3 in the mounting seat 4. Even if strong vibration, impact or frequent bumps are encountered during the driving of the vehicle, this additional constraint mechanism can effectively prevent the positioning seat 8 from being pulled out of the positioning groove 401 due to accidental force, thereby avoiding the loosening or displacement of the wire harness 3, and is conducive to ensuring that the wire harness 3 of the electric heating part always maintains stable electrical connection, greatly improving the reliability and durability of the exhaust muffler electric heating system, and ensuring the continuous and effective play of the muffler heating function in cold environments.

[0066] And, as shown in Figure 12 , as a preferred embodiment, the fixing seat 5 of this embodiment is in a cylindrical shape adapted to the mounting cavity. In addition, in order to further improve the constraint effect of the positioning seat 8 and ensure the firmness of the wire harness 3, as shown in Figure 12 , the fixing seat 5 of this embodiment is connected to the mounting seat 4 by a screwing structure. Since the screwing structure can provide strong connection force, it is conducive to ensuring that the fixing seat 5 can be stably connected to the mounting seat 4 under various working conditions, and can effectively prevent the fixing seat 5 from loosening or falling off due to factors such as vehicle vibration and bumping, thereby ensuring the continuous and effective constraint effect on the wire harness 3 and maintaining the stable operation of the exhaust muffler electric heating system.

[0067] As a further embodiment, as shown in Figure 12 , when the fixing seat 5 is connected to the mounting seat 4, one end of the fixing seat 5 is exposed outside the fixing seat 5. And, the end of the fixing seat 5 is hexagonal to be able to adapt to external tools to screw the fixing seat 5 and the mounting seat 4 together. In this way, the fixing seat 5 can be quickly screwed into the mounting seat 4 by cooperating with the one end of the fixing seat 5 through the external tool. And, as the fixing seat 5 penetrates into the mounting seat 4, it can press against the positioning seat 8 and tightly press the positioning seat 8 against the sidewall on the lower side of the positioning groove 401, thereby effectively limiting the axial and circumferential displacement of the positioning seat 8 and firmly installing it in the mounting seat 4.

[0068] It should be noted that in addition to screwing the fixing seat 5 to the mounting seat 4, it can also be clamped or welded to the mounting seat 4, but at this time it may not be convenient to insert and is not conducive to repairing the wire harness 3.

[0069] Here, it should be noted that in order to facilitate the connection of the wire harness 3 with the electric heating sheet 6 and the external power supply device (such as a storage battery), as shown in Figure 6 , the wire harness 3 of this embodiment includes a hard first part and a soft second part, and the above-mentioned positioning seat 8 and fixing seat 5 are provided on the first part, and both of them can adopt the structure commonly used in the art.

[0070] In addition, as a further embodiment, a detection unit for detecting the temperature of the gas is arranged in the shell. By arranging the detection unit, it can be in contact with the gas inside the muffler, and can timely sense the actual temperature of the gas, so that the abnormal condition of the exhaust system can be found in time, and accurate feedback control can be provided for the operation of the electric heating unit. Among them, as shown in Figure 7 As a preferred embodiment, the detection unit of the present embodiment is a temperature sensor 7 arranged on the wire harness 3, which can be connected with the vehicle control unit.

[0071] Based on the above overall description, the exhaust muffler of the present embodiment can prevent the exhaust holes in the muffler from being blocked by ice in cold environments by turning on the electric heating sheet 6 through the in-vehicle switch when the ambient temperature is continuously below the preset threshold, thereby effectively preventing the pressure inside the shell from being too large. The winding and lock seam welding of the main body 1 can help to ensure the pressure resistance and sealing performance of the shell, thereby further preventing the shell from exploding due to excessive internal pressure.

[0072] In addition, the present embodiment also provides a vehicle provided with the exhaust muffler as described above.

[0073] The vehicle of the present embodiment can effectively prevent the muffler from exploding due to excessive internal pressure by arranging the exhaust muffler as described above, thereby ensuring the normal operation of the vehicle.

[0074] The above description is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An exhaust muffler characterized in that: the shell of the exhaust muffler comprises a main body (1) wound in a cylindrical shape, and end plates connected to the two ends of the main body (1) respectively; the two edges of the main body (1) after winding are connected to each other and form a lock seam structure (101) engaged together, and the lock seam structure (101) is welded with the outer wall of the main body (1) to form a weld (2) arranged along the extension direction of the lock seam structure (101).

2. The exhaust muffler according to claim 1, characterized in that: the weld (2) is arranged in multiple sections along the extension direction of the lock seam structure (101), and the number of sections of the weld (2) satisfies: L≥n*D; wherein L is the extension length of the lock seam structure (101), n is the number of sections of the weld (2), and D is a preset lower limit design value of the length of the shell.

3. The exhaust muffler according to claim 1, characterized in that: an electric heating part is arranged in the shell, and the electric heating part is used for heating the gas entering the exhaust muffler.

4. The exhaust muffler according to claim 3, characterized in that: a detection part for detecting the temperature of the gas is arranged in the shell.

5. The exhaust muffler according to claim 3, characterized in that: a through hole is arranged on the shell for the wire harness (3) of the electric heating part to pass through, and a mounting seat (4) fixed on the shell is arranged at the through hole; an installation cavity in communication with the through hole is arranged on the mounting seat (4), the wire harness (3) passes through the installation cavity, and is positioned in the mounting seat (4) by a positioning part.

6. The exhaust muffler according to claim 5, characterized in that: the positioning part comprises a positioning seat (8) fixed on the wire harness (3), and a positioning groove (401) arranged in the mounting seat (4), and a positioning block (801) radially protruding outward is arranged on the positioning seat (8), and an avoiding groove (402) in communication with the positioning groove (401) is further arranged in the mounting seat (4); the positioning block (801) can enter the positioning groove (401) from the avoiding groove (402), and the positioning seat (8) can be rotated relative to the mounting seat (4) to make the positioning block (801) clamped in the positioning groove (401).

7. The exhaust muffler according to claim 6, characterized in that: a fixing seat (5) capable of sliding along the wire harness (3) is arranged on the wire harness (3); when the positioning block (801) is clamped in the positioning groove (401), the fixing seat (5) can be connected to the mounting seat (4) to constrain the positioning seat (8) in the mounting seat (4).

8. The exhaust muffler according to claim 7, characterized in that: the fixing seat (5) is connected to the mounting seat (4) by a screwing structure.

9. The exhaust muffler according to any one of claims 3 to 8, characterized in that: The inner wall of the main body (1) is provided with an embedded groove, the electric heating part has an electric heating sheet (6), and the electric heating sheet (6) is embedded in the embedded groove.

10. A vehicle characterized by comprising: The vehicle is provided with the exhaust silencer according to any one of claims 1 to 9.

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