Valve for silencer, silencer assembly and vehicle

Abstract

The utility model provides a valve piece for a silencer, a silencer assembly and a vehicle. The valve piece for the silencer comprises a valve body with a valve cavity, a valve block rotationally arranged on the valve body and an elastic piece arranged between the valve body and the valve block. The valve body is used for being connected to an air outlet pipe of a silencer in series, the valve block is transversely arranged in the valve cavity under the action of the elastic piece, an avoiding gap is formed between the valve block and the cavity wall of the valve cavity, the valve block is driven to rotate relative to the valve body, and the elastic piece is located outside the valve cavity and used for driving the rotating valve block to return. According to the valve piece for the silencer, the flow can be adjusted according to the size of air flow in the valve cavity, the flow can be reduced when an engine rotates at a low speed so as to reduce order noise of the engine, the flow can be increased when the engine rotates at a high speed so as to reduce exhaust back pressure, and therefore the noise reduction effect can be improved on the premise that a silencer assembly meets the noise reduction requirement. And the volume of a silencer connected with the valve body in series is effectively reduced. And the elastic piece is arranged outside the valve cavity, so that the elastic piece can be prevented from being influenced by a corrosion environment in the valve cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of muffling and exhausting, in particular to a valve component for a muffler. At the same time, the utility model also relates to a muffler assembly provided with the valve component for the muffler, and a vehicle provided with the muffler assembly. Background Technique

[0002] With the continuous improvement of the noise limit requirements for the external noise of a vehicle during acceleration, the stationary noise, the compressed air noise, etc., and with the development of the electrification and intelligence of the whole vehicle, more and more electrical components (controllers, batteries, etc.) and additional on-vehicle tools (electric trailer hooks, etc.) are integrated in the lower vehicle body, which intensifies the reduction of the exhaust system layout space, resulting in insufficient volume of the main muffling components and poor subjective feelings of customers. Among them, as the name implies, the muffler is a device used to eliminate or reduce sound. In the field of acoustics, it mainly achieves the purpose of noise reduction by changing the propagation path, speed or energy of sound waves.

[0003] To solve the problems of small exhaust system layout space, insufficient muffler volume, and decreased muffling effect, valve body structures are usually added at different positions. By controlling the opening and closing angle of the valve, matching the air flow size, reducing the muffler volume, and improving the sound quality of the exhaust tailpipe noise, so as to meet the applications of various vehicle models. However, the traditional exhaust system uses multiple mufflers connected in series, and eliminates the tail gas noise through the maze structure of the pipes in the muffler, sound-absorbing materials, etc., resulting in an over-large muffler volume, not meeting the requirements of the surrounding safety and disaster prevention layout, and having poor versatility, making it difficult to meet the applications of hybrid vehicle models.

[0004] In addition, adding a valve body in the main muffler, which is pushed by the air flow to open the valve, has high requirements for elastic components (rotating shafts, springs, shrapnel, etc.). Moreover, when the valve body is assembled with the partition board, the gas flow area is small, the exhaust back pressure is high at high speeds, and the air flow noise is large. When the valve body is assembled with the end of the inner core pipe, the valve is opened passively, and there are defects such as the risk of friction between the valve piece and the pipe wall and the valve piece not opening in place. Content of the Utility Model

[0005] In view of this, the purpose of the present utility model is to propose a valve component for a muffler, which is beneficial to reducing the volume of the muffler assembly on the premise of meeting the muffling requirements of the muffler assembly.

[0006] To achieve the above object, the technical solution of the present utility model is realized as follows:

[0007] A valve component for a muffler, comprising a valve body having a valve cavity, a valve piece rotatably arranged on the valve body through a rotating shaft, and an elastic member arranged between the valve body and the valve piece;

[0008] The valve body is used to be connected in series to the outlet pipe of the muffler. Under the action of the elastic member, the valve plate is horizontally arranged in the valve cavity, and a clearance is formed between the valve plate and the cavity wall of the valve cavity. Moreover, the valve plate is driven to be able to rotate relative to the valve body. The elastic member is located outside the valve cavity and is used to drive the rotating valve plate to return to its original position.

[0009] Furthermore, ventilation holes are provided on the valve plate; and / or,

[0010] a weight block is provided on the valve plate.

[0011] Furthermore, the cross-section of the valve cavity is circular, and the rotating shaft is rotatably arranged on the valve body along the radial direction of the valve cavity;

[0012] the rotating shaft is offset to one side of the center line of the valve cavity.

[0013] Furthermore, the valve body includes a valve body main body having the valve cavity, a first mounting bracket arranged outside the valve body main body, and a bracket arranged on the first mounting bracket. Moreover, a first mounting groove communicating with the valve cavity is provided on the first mounting bracket;

[0014] One end of the rotating shaft passes through the first mounting groove and is rotatably arranged on the first mounting bracket, and a sealing portion is provided between the rotating shaft and the first mounting bracket;

[0015] The elastic member includes a torsion spring sleeved on the rotating shaft, and two ends of the torsion spring are respectively connected to the rotating shaft and the bracket.

[0016] Furthermore, the sealing portion includes a sealing bushing arranged between the rotating shaft and the first mounting bracket, and the sealing bushing is located in the first mounting groove;

[0017] A radially outward convex sealing protrusion is provided on the rotating shaft. The sealing bushing is sleeved on the rotating shaft and abuts between the sealing protrusion and the bottom of the first mounting groove.

[0018] Furthermore, the valve body includes a second mounting bracket arranged on the valve body main body, and the second mounting bracket is provided with a second mounting groove communicating with the valve cavity;

[0019] The other end of the rotating shaft is rotatably arranged in the second mounting groove.

[0020] Compared with the prior art, the present utility model has the following advantages:

[0021] The valve component for a muffler described in the present utility model rotates a valve plate on the valve body and horizontally arranges the valve plate in the valve cavity. The flow rate of the valve component for the muffler can be adjusted according to the size of the air flow in the valve cavity, reducing the flow rate at low engine speeds to reduce the order noise of the engine, and increasing the flow rate at high engine speeds to reduce the exhaust back pressure. Thus, under the condition that the muffler assembly meets the silencing requirements, the volume of the muffler connected in series with the valve body can be effectively reduced. By arranging the elastic member outside the valve cavity, it can prevent the elastic member from being affected by the corrosive environment inside the valve cavity. At the same time, the setting of the avoidance gap not only facilitates the rotation of the valve plate but also allows the valve plate to have a larger adjustment angle.

[0022] In addition, by arranging vent holes on the valve plate, the ventilation requirement can be met even when the air flow is not sufficient to drive the rotation of the valve plate. By arranging counterweights on the valve plate, the valve plate can be prevented from resonating under the impact of the air flow. By offsetting the rotating shaft to one side of the center line of the valve cavity, the driving force for driving the rotation of the valve plate can be reduced, which is beneficial to the air flow passing through the valve component for the muffler. At the same time, the length of the rotating shaft can be reduced, and the overall occupied space of the valve component for the muffler can be reduced.

[0023] Secondly, by arranging a first mounting bracket with a first mounting groove outside the valve body, and arranging a sealing part between the rotating shaft and the first mounting bracket, it is not only convenient to arrange the rotating shaft but also beneficial to ensure the airtightness of the whole valve component for the muffler. The sealing part includes a sealing bushing arranged in the first mounting groove, and a sealing protrusion is arranged on the rotating shaft and abuts against the sealing bushing. The structure is simple and convenient for design and implementation. By arranging a second mounting bracket and rotatably arranging the other end of the rotating shaft in the second mounting groove of the second mounting bracket, the setting stability of the rotating shaft can be improved, thereby improving the smoothness of the rotation of the valve plate.

[0024] Another object of the present utility model is to propose a muffler assembly, including a muffler and a valve component for the muffler as described in any one of the above.

[0025] Further, the muffler includes a muffler body having a muffling cavity, and an intake pipe and an outlet pipe arranged at both ends of the muffler body. The valve body is connected to the outlet pipe.

[0026] A partition is arranged in the muffling cavity. Along the intake direction, the partition sequentially divides the muffling cavity into a first cavity and a second cavity, and a communication part for communicating the first cavity and the second cavity is arranged on the partition.

[0027] Further, the intake pipe has an extending part extending into the muffling cavity. The extending part passes through the first cavity and is inserted into the second cavity, and air outlet holes are arranged on the inner wall of the extending part; and / or

[0028] The outlet pipe has an extended portion extending into the muffling chamber, and the extended portion passes through the second cavity and is inserted into the first cavity.

[0029] For the muffler assembly of the present utility model, by providing the valve member for muffler as described above, while meeting the muffling requirements, the volume of the muffler can be reduced, which is beneficial to the arrangement of the peripheral components of the muffler assembly.

[0030] In addition, the muffler includes a muffler body and a partition provided in the muffling chamber, and the partition divides the muffling chamber into a first cavity and a second cavity. The structure is simple, facilitating design and implementation, and can have a good muffling effect. Passing the extending portion through the first cavity and inserting it into the second cavity, or passing the extended portion through the second cavity and inserting it into the first cavity is beneficial to improving the muffling effect of the muffler.

[0031] In addition, the present utility model also provides a vehicle, on which the above-mentioned muffler assembly is provided.

[0032] The vehicle of the present utility model has all the beneficial effects of the above-mentioned muffler assembly, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0034] Figure 1 is an assembly state diagram of a pre-stage muffler and a post-stage muffler in the prior art;

[0035] Figure 2 is a schematic structural diagram of a pre-stage muffler in the prior art;

[0036] Figure 3 is a schematic structural diagram of the valve member for muffler according to an embodiment of the present utility model from a first perspective;

[0037] Figure 4 is a schematic structural diagram of the valve member for muffler according to an embodiment of the present utility model from a second perspective;

[0038] Figure 5 is a schematic structural diagram of the valve member for muffler according to an embodiment of the present utility model from a third perspective;

[0039] Figure 6 is a schematic structural diagram of the valve member for muffler according to an embodiment of the present utility model from a fourth perspective;

[0040] Figure 7 is Figure 6Cross-sectional view along line A-A;

[0041] Figure 8 is Figure 6 Cross-sectional view along line B-B;

[0042] Figure 9 Assembly state diagram of the first mounting bracket and the bracket according to the embodiment of the present utility model;

[0043] Figure 10 Assembly state diagram of the first mounting bracket and the bracket according to the embodiment of the present utility model from another perspective;

[0044] Figure 11 Assembly state diagram of the rotating shaft and the connecting frame according to the embodiment of the present utility model;

[0045] Figure 12 Structural schematic diagram of the muffler assembly according to the embodiment of the present utility model;

[0046] Figure 13 Structural schematic diagram of the muffler assembly according to the embodiment of the present utility model from another perspective.

[0047] Explanation of reference numerals:

[0048] 1. Valve body; 2. Valve plate; 3. Counterweight; 4. First mounting bracket; 5. Bracket; 6. Torsion spring; 7. Rotating shaft; 8. Connecting frame; 9. Second mounting bracket; 10. Sealing bushing; 11. Intake pipe; 12. Exhaust pipe; 13. Flange; 14. Partition; 15. Hook; 16. Muffler; A. Front-stage muffler assembly; B. Rear-stage muffler assembly; K. Avoidance gap;

[0049] 201. Vent hole; 501. Notch; 701. Sealing protrusion; 1101. Inserted part; 1201. Extended part. Detailed implementation manners

[0050] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0051] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0052] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "linkage", and "connector" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific circumstances.

[0053] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0054] Embodiment 1

[0055] Combined with Figure 1 and Figure 2 As shown in [relevant figures], the traditional vehicle exhaust system usually adopts a series arrangement of a front-stage muffler assembly A and a rear-stage muffler assembly B. And to meet the muffling requirements, the muffler 16 of the front-stage muffler assembly A is internally divided into three muffling sub-chambers by a partition 14 and the two muffling sub-chambers at both ends are connected through a resonance tube. Therefore, the volume of the muffler 16 of the existing front-stage muffler assembly A is relatively large, which is not convenient for the arrangement of other components on the vehicle. For this reason, this embodiment particularly proposes a valve member for the muffler 16 that can be applied to the front-stage muffler A assembly, which can effectively reduce the volume of the front-stage muffler 16 on the premise of meeting the muffling requirements.

[0056] Among them, the valve member for the muffler in this embodiment, in terms of the overall composition, includes a valve body having a valve cavity, a valve plate 2 rotatably provided on the valve body, and an elastic member provided between the valve body and the valve plate 2. The valve body is used to be connected in series on the outlet pipe 12 of the muffler 16. Under the action of the elastic member, the valve plate 2 is horizontally arranged in the valve cavity, and there is a clearance K formed between the valve plate 2 and the cavity wall of the valve cavity. And the valve plate 2 is driven to be able to rotate relative to the valve body. The elastic member is located outside the valve cavity and is used to drive the rotating valve plate 2 to return to its original position.

[0057] The valve member for the muffler in this embodiment, by rotatably arranging the valve plate 2 on the valve body and horizontally arranging the valve plate 2 in the valve cavity, can adjust the flow rate of this valve member for the muffler according to the size of the air flow in the valve cavity. It can reduce the flow rate at low engine speeds to reduce the engine order noise, and increase the flow rate at high engine speeds to reduce the exhaust back pressure. Thus, it can effectively reduce the volume of the muffler 16 connected in series with the valve body while the muffler assembly meets the muffling requirements. And by arranging the elastic member outside the valve cavity, it can prevent it from being affected by the corrosive environment inside the valve cavity. At the same time, the setting of the clearance K not only facilitates the rotation of the valve plate 2 but also allows the valve plate 2 to have a larger adjustment angle.

[0058] Based on the above overall introduction, an exemplary structure of the valve component for the muffler in this embodiment is referred to Figures 3 to 8 as shown in. Among them, for the convenience of connecting the valve component for this muffler in series with the outlet pipe 12 of the muffler 16, as a preferred embodiment, the cross-section of the valve cavity is circular. And specifically in implementation, the diameter of the following valve body 1 is generally set to 50 mm - 80 mm. For example, it can be set to other values such as 50 mm, 55 mm, 60 mm, 65 mm, 70 mm, 75 mm, 80 mm, etc. The valve plate 2 is also a circular plate conforming to the shape of the valve body 1. And to further prevent the valve plate 2 from rubbing against the cavity wall of the valve cavity and to allow the valve plate 2 to rotate by a large angle, the avoidance gap K provided between the valve plate 2 and the cavity wall of the valve cavity is preferably set to not less than 4 mm.

[0059] In addition, as Figure 3 and Figure 5 shown in, as a further implementation manner, the valve plate 2 is provided with a ventilation hole 201. With this design, it can meet the ventilation requirement even when the air flow is not sufficient to drive the valve plate 2 to rotate. Among them, the ventilation hole 201 is preferably provided at the center of the valve plate 2 to further facilitate the air flow in the valve cavity to pass through the valve plate 2. Further, as Figure 5 shown in, the avoidance gap K corresponding to the position of the ventilation hole 201 is larger to further facilitate the air flow through the valve cavity. Specifically in implementation, the diameter of the ventilation hole 201 can be set between 12 mm - 14 mm to ensure the air flow passage area and ensure that the exhaust back pressure is not affected.

[0060] It should be noted that in addition to the above settings, it is also possible to make the avoidance gap K between each part of the valve plate 2 in the circumferential direction and the cavity wall of the valve cavity the same. In addition, in addition to setting the ventilation hole 201 at the center of the valve plate 2, it can also be set at other positions of the valve plate 2.

[0061] As Figure 3 and Figure 5 shown in, as a preferred implementation manner, the valve plate 2 is provided with a groove adapted to the rotation shaft 7, and the rotation shaft 7 is fixed in this groove by welding or bonding. In this embodiment, by providing a groove on the valve plate 2, it is not only convenient for it to be connected to the rotation shaft 7, but also can improve the structural strength of the valve plate 2. At this time, to prevent the valve plate 2 from generating resonance under the impact of the air flow, as a further implementation manner, a counterweight 3 is also provided on the valve plate 2, and the two can be connected by bonding, welding, etc.

[0062] Here, it should be noted that in addition to setting the ventilation hole 201 and the counterweight 3 on the valve plate 2 at the same time, according to the design requirements, only the ventilation hole 201 can be set on the valve plate 2, or only the counterweight 3 can be set.

[0063] In addition, in combination with Figure 5 andFigure 7 As shown, as a preferred embodiment, the rotating shaft 7 is rotatably arranged on the valve body along the radial direction of the valve cavity, and the rotating shaft 7 is offset to one side of the center line of the valve cavity. In this embodiment, by offsetting the rotating shaft 7 to one side of the center line of the valve cavity, the driving force for driving the valve plate 2 to rotate can be reduced, which is beneficial for the airflow to pass through the valve component for the muffler. At the same time, the length of the rotating shaft 7 can also be reduced, and the overall occupied space of the valve component for the muffler can be reduced.

[0064] At this time, to ensure the overall airtightness of the valve component for the muffler, in combination with Figure 3 , Figure 4 and Figure 7 As shown, as a preferred embodiment, the valve body includes a valve body main body 1 having a valve cavity, a first mounting bracket 4 arranged outside the valve body main body 1, and a bracket 5 arranged on the first mounting bracket 4. The first mounting bracket 4 is provided with a first mounting groove communicating with the valve cavity. Among them, one end of the rotating shaft 7 passes through the first mounting groove and is rotatably arranged on the first mounting bracket 4, and a sealing portion is arranged between the rotating shaft 7 and the first mounting bracket 4. The elastic member includes a torsion spring 6 sleeved on the rotating shaft 7, and both ends of the torsion spring 6 are respectively connected to the rotating shaft 7 and the bracket 5.

[0065] In this embodiment, by arranging the first mounting bracket 4 with the first mounting groove outside the valve body main body 1 and arranging the sealing portion between the rotating shaft 7 and the first mounting bracket 4, it is not only convenient to arrange the rotating shaft 7, but also beneficial to ensure the overall airtightness of the valve component for the muffler, and it can prevent gas from flowing out through the through holes arranged on the first mounting bracket 4.

[0066] In combination with Figure 9 and Figure 10 As shown, to facilitate the connection between the first mounting bracket 4 and the valve body main body 1, the first mounting bracket 4 of this embodiment is integrally hexagonal, so as to be clamped when connected to the valve body main body 1. The first mounting groove in the first mounting bracket 4 is a circular groove, so as to facilitate the rotational arrangement of the rotating shaft 7. In addition, to achieve the seal between the first mounting bracket 4 and the valve body main body 1, as a preferred embodiment, one end of the first mounting bracket 4 is adapted to be arranged on the outer surface of the valve body main body 1, and the other end is a plane and is formed with a through hole for the rotating shaft 7 to pass through. Moreover, the first mounting bracket 4 and the valve body main body 1 are preferably connected by welding.

[0067] In addition, the structure of the bracket 5 in this embodiment continues to refer to the setting in Figure 9 and Figure 10 As shown, it includes an end plate connected to the first mounting bracket 4 and side plates arranged along the circumference of the end plate, and a receiving groove is formed between the side plates and the end plate. One end of the above-mentioned torsion spring 6 is arranged in the receiving groove to limit the radial displacement of the torsion spring 6. At the same time, as Figure 9As shown in the figure, a notch 501 is also provided on the side plate, and one end of the torsion spring 6 is inserted into the notch 501, thereby realizing the connection between the torsion spring 6 and the valve body 1.

[0068] In addition, to facilitate the connection between the torsion spring 6 and the rotating shaft 7, as Figure 3 and Figure 4 shown in the figure, one end of the rotating shaft 7 extending out of the valve cavity is also provided with a connecting frame 8, and the structure of the connecting frame 8 is substantially the same as that of the above-mentioned bracket 5. That is to say, a notch is also provided on the side wall of the connecting frame 8, and the other end of the torsion spring 6 is clamped in the notch, thereby realizing the connection between the torsion spring 6 and the rotating shaft 7. It should be noted that in addition to providing a connecting frame 8 with a notch, it is also possible not to provide a connecting frame 8 on the rotating shaft 7, and it is also feasible to provide a jack on the rotating shaft 7 for the other end of the torsion spring 6 to be inserted.

[0069] Combined with Figure 7 and Figure 11 shown in the figure, as a preferred embodiment, the sealing part of this embodiment includes a sealing bushing 10 provided between the rotating shaft 7 and the first mounting bracket 4, and the sealing bushing 10 is located in the first mounting groove. At the same time, a radially protruding sealing projection 701 is provided on the rotating shaft 7, and the sealing bushing 10 is sleeved on the rotating shaft 7 and abuts between the sealing projection 701 and the bottom of the first mounting groove. In this way, one end of the sealing bushing 10 can be abutted against the sealing projection 701 to prevent air flow from entering the sealing bushing 10. At the same time, the other end of the sealing bushing 10 can be abutted against the first mounting bracket 4 and cover the through hole to prevent air flow from flowing out of the through hole.

[0070] Among them, as a further implementation method, the sealing projection 701 is arranged along the radial direction of the rotating shaft 7, and as Figure 11 shown in the figure, the side of the sealing projection 701 abutting against the sealing bushing 10 is configured as an arc surface to improve the sealing performance between it and the sealing bushing 10. In addition, the sealing bushing 10 can specifically adopt the structure commonly used in the exhaust system. In addition, as a further implementation method, combined with Figure 3 、 Figure 4 and Figure 7 shown in the figure, the valve body of this embodiment further includes a second mounting bracket 9 provided on the valve body 1. The second mounting bracket 9 is provided with a second mounting groove communicating with the valve cavity, and the other end of the rotating shaft 7 is rotatably arranged in the second mounting groove.

[0071] In this embodiment, by providing the second mounting bracket 9 and rotatably arranging the other end of the rotating shaft 7 in the second mounting groove of the second mounting bracket 9, the setting stability of the rotating shaft 7 can be improved, thereby improving the rotation smoothness of the valve plate 2. In addition, to improve the rotation smoothness of the rotating shaft 7, the rotating shaft 7 can specifically rotate in the second mounting bracket 9 through a bearing or a self-lubricating bushing.

[0072] By adopting the above structure, the valve component for the muffler in this embodiment can control the pre-tightening force of the torsion spring 6 to match the exhaust gas flow rate, thereby controlling the opening angle of the valve plate 2. Preferably, the opening angle is not greater than 60°. Thus, the opening angle can be reduced at low engine speeds, which is only beneficial for the muffler 16 to reduce noise and lower the engine order noise. At high engine speeds, the opening angle is increased to utilize the mufflers 16 and the subsequent muffler assembly B for noise reduction simultaneously, which can reduce the exhaust back pressure and improve the power performance of the engine.

[0073] In addition, different from the passive valves installed on the internal partition 14 or the pipe end of the muffler 16 in the prior art, the valve component for the muffler in this embodiment can be connected in series on the outlet pipe 12 of the muffler 16. The internal air flow is concentrated, and the valve plate 2 is more easily pushed open by the air flow at high speeds. Moreover, the torsion spring 6 and each frame outside the valve cavity are not affected by the internal corrosion environment, effectively avoiding problems such as the valve plate 2 not opening in place due to friction between the valve plate 2 and the cavity wall, rust and jamming of the torsion spring 6.

[0074] Embodiment Two

[0075] This embodiment relates to a muffler assembly, which includes a muffler 16 and a valve component for the muffler as in Embodiment One provided downstream of the muffler 16. Specifically, when in use, this muffler assembly can be used as the Figure 1 front-stage muffler assembly A shown in and cooperate with the subsequent muffler assembly B for noise reduction.

[0076] Combined with Figure 12 and Figure 13 As shown in, as a preferred embodiment, the muffler 16 of this embodiment includes a muffler body with a muffler cavity, and an inlet pipe 11 and an outlet pipe 12 provided at both ends of the muffler body. The above valve body 1 is connected to the outlet pipe 12. And a partition 14 is provided in the muffler cavity. Along the intake direction, the partition 14 divides the muffler cavity into a first cavity and a second cavity in sequence, and a communication part for connecting the first cavity and the second cavity is provided on the partition 14. Among them, as Figure 13 shown in, the communication part is specifically a plurality of small holes provided on the partition 14. The muffler 16 of this embodiment includes a muffler body and a partition 14 provided in the muffler cavity, and the partition 14 divides the muffler cavity into a first cavity and a second cavity. The structure is simple, which is convenient for design and implementation, and can have a good sound absorption effect.

[0077] In addition, the inlet pipe 11 has an extending part 1101 extending into the muffler cavity. The extending part 1101 passes through the first cavity and is inserted into the second cavity, and air outlet holes are provided on the cavity wall of the extending part 1101. And / or, the outlet pipe 12 has an extending part 1201 extending into the muffler cavity. The extending part 1201 passes through the second cavity and is inserted into the first cavity. Among them, as Figure 13As shown, as a preferred embodiment, the extending portion 1101 of the intake pipe 11 of this embodiment passes through the first cavity and is inserted into the second cavity, and air outlet holes are provided on the wall of the extending portion 1101. At the same time, the extending portion 1201 of the exhaust pipe 12 passes through the second cavity and is inserted into the first cavity. Thus, an expansion chamber type sound absorption structure can be formed, and a better sound absorption effect can be achieved.

[0078] In addition, for the convenience of connecting the muffler assembly to other components, flanges 13 are provided at one end of the valve body 1 away from the exhaust pipe 12 and on the intake pipe 11 of the muffler 16. In addition, the same as the prior art, a hook 15 is also provided on the muffler 16, and its structure can refer to the prior art.

[0079] Combined Figure 2 and Figure 13 As shown, the muffler assembly of this embodiment includes the above-mentioned muffler 16 and the valve member for the muffler in Embodiment 1. Compared with the muffler 16 in the existing pre-stage muffler assembly A, one sound absorption sub-cavity can be reduced, and the resonance pipe and a partition 14 can be omitted, which can effectively reduce the volume of the muffler 16, facilitate meeting the layout requirements of peripheral components of various vehicle models, and also facilitate meeting the lightweight requirements. Moreover, compared with Figure 1 the pre-stage muffler assembly A shown, the muffler assembly of this embodiment can effectively reduce the second-order and fourth-order noises, especially with obvious improvement during the medium and low engine speeds, and can effectively reduce the low-frequency rumbling.

[0080] In addition, this embodiment also relates to a vehicle, on which the above-mentioned muffler assembly is provided.

[0081] The vehicle of this embodiment has all the beneficial effects of the above-mentioned muffler assembly, which will not be elaborated here.

[0082] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A valve member for a muffler, characterized in that: It comprises a valve body having a valve cavity, a valve plate (2) arranged on the valve body which is rotated by a rotating shaft (7), and an elastic member arranged between the valve body and the valve plate (2); The valve body is used to be connected in series to the outlet pipe (12) of the muffler (16); the valve plate (2) is placed horizontally in the valve cavity under the action of the elastic member, and an avoidance gap (K) is formed between the valve plate (2) and the cavity wall of the valve cavity, and the valve plate (2) is driven to rotate relative to the valve body; the elastic member is located outside the valve cavity and is used to drive the rotating valve plate (2) to return to its original position.

2. The muffler valve according to claim 1, characterized in that: The valve plate (2) is provided with a vent hole (201); and / or, A counterweight block (3) is provided on the valve plate (2).

3. The valve member for a muffler according to claim 1, characterized in that: The cross section of the valve cavity is circular, and the rotating shaft (7) is rotatably arranged on the valve body along the radial direction of the valve cavity; The rotating shaft (7) is offset to one side of the center line of the valve cavity.

4. The muffler valve according to any one of claims 1 to 3, characterized in that: The valve body comprises a valve body (1) having the valve cavity, a first mounting frame (4) arranged outside the valve body (1), and a bracket (5) arranged on the first mounting frame (4), and the first mounting frame (4) is provided with a first mounting groove communicating with the valve cavity; One end of the rotating shaft (7) passes through the first mounting groove and is rotatably mounted on the first mounting frame (4), and a sealing portion is provided between the rotating shaft (7) and the first mounting frame (4); The elastic member comprises a torsion spring (6) sleeved on the rotating shaft (7), and two ends of the torsion spring (6) are respectively connected to the rotating shaft (7) and the bracket (5).

5. The valve member for a muffler according to claim 4, characterized in that: The sealing portion comprises a sealing sleeve (10) arranged between the rotating shaft (7) and the first mounting frame (4), and the sealing sleeve (10) is located in the first mounting groove; The rotating shaft (7) is provided with a radially outwardly protruding sealing protrusion (701), and the sealing bushing (10) is sleeved on the rotating shaft (7) and abuts between the sealing protrusion (701) and the bottom of the first mounting groove.

6. The valve member for a muffler according to claim 4, characterized in that: The valve body comprises a second mounting frame (9) arranged on the valve body main body (1), and the second mounting frame (9) is provided with a second mounting groove communicating with the valve cavity; The other end of the rotating shaft (7) is rotatably disposed in the second mounting groove.

7. A muffler assembly, characterized in that: The invention comprises a muffler (16), and a muffler valve according to any one of claims 1 to 6, which is arranged downstream of the muffler (16).

8. The muffler assembly according to claim 7, characterized in that: The muffler (16) comprises a muffler body having a muffler cavity, and an air inlet pipe (11) and an air outlet pipe (12) arranged at two ends of the muffler body, and the valve body is connected to the air outlet pipe (12); A partition (14) is provided in the muffler chamber, and along the air intake direction, the partition (14) divides the muffler chamber into a first cavity and a second cavity in sequence, and a connecting portion connecting the first cavity and the second cavity is provided on the partition (14).

9. The muffler assembly according to claim 8, characterized in that: The air inlet pipe (11) has an extending portion (1101) extending into the muffler cavity, the extending portion (1101) passes through the first cavity and is inserted into the second cavity, and an air outlet is provided on a side wall of the extending portion (1101); and / or, The air outlet pipe (12) has an extension portion (1201) extending into the muffler cavity, and the extension portion (1201) passes through the second cavity and is inserted into the first cavity.

10. A vehicle, characterized in that: The vehicle is provided with the muffler assembly according to any one of claims 7 to 9.

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