Built-in spring adjusting exhaust valve

Abstract

The utility model provides a built-in spring adjusting exhaust valve, which comprises a cylinder body which extends along the axial direction and comprises an air inlet end and an air outlet end, the side edge of the cylinder body is provided with a through hole, the through hole penetrates through the cylinder body along the radial direction, the through hole is provided with a rotating shaft assembly, and the extending direction of the rotating shaft assembly is vertical to the radial direction; the valve plate is arranged in the barrel, and the valve plate is rotationally connected with the rotating shaft assembly and can be opened or closed towards the air outlet end; the elastic piece is arranged on the rotating shaft assembly, one end of the elastic piece is connected with the cylinder body, and the other end of the elastic piece is connected with the valve plate; and the adjusting assembly is connected with the end part of the elastic piece, and the adjusting assembly is used for adjusting the initial elastic force of the elastic piece. The built-in spring adjusting exhaust valve is simple in structure, the elastic piece is installed in the exhaust valve, the overall size is reduced, and cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive exhaust system NVH, and particularly relates to an in - built spring - regulated exhaust valve. Background Technique

[0002] With the improvement of consumers' requirements for the comfort of passenger cars, the requirements for the noise control of the whole vehicle should also be correspondingly improved to meet the noise requirements of the whole vehicle under driving, accelerating and idling conditions. Reducing exhaust noise is the main way to reduce vehicle noise.

[0003] The exhaust system transmits high - temperature exhaust gases from the engine through exhaust system components, such as mufflers, resonators, etc. Although mufflers and resonators are effective in eliminating the sound waves carried by the exhaust gases, these components are usually relatively large in size and provide limited noise attenuation. Summary of the Invention

[0004] To solve at least one technical problem in the prior art, an embodiment of the utility model provides an in - built spring - regulated exhaust valve, which is small in volume and can reduce noise. To achieve the above technical purposes, the technical solution adopted in the embodiment of the utility model is as follows:

[0005] An embodiment of the utility model provides an in - built spring - regulated exhaust valve, including:

[0006] A cylinder body extending along the axial direction, including an air inlet end and an air outlet end. A through - hole is provided on the side of the cylinder body, the through - hole penetrates the cylinder body along the radial direction, and a rotating shaft assembly is provided at the through - hole, and the extending direction of the rotating shaft assembly is perpendicular to the radial direction;

[0007] A valve plate is arranged in the cylinder body, the valve plate is rotatably connected with the rotating shaft assembly and can be opened or closed towards the air outlet end;

[0008] An elastic member is arranged on the rotating shaft assembly, one end of the elastic member is connected with the cylinder body, and the other end of the elastic member is connected with the valve plate;

[0009] An adjusting assembly is connected to the end of the elastic member, and the adjusting assembly is used to adjust the initial elastic force of the elastic member.

[0010] Further, the cylinder body includes:

[0011] A first cylinder body, one end of the first cylinder body is the air inlet end, and the other end is provided with the valve plate;

[0012] A second cylinder body, one end of the second cylinder body is the air outlet end, the other end is provided with the through - hole, and the other end of the second cylinder body is fixedly connected with the other end of the first cylinder body.

[0013] Furthermore, the shaft assembly includes:

[0014] A shell is provided in a U-shaped structure, with an opening of the shell facing the second cylinder and covering the through hole;

[0015] A rotating shaft is provided in the housing, wherein the extending direction of the rotating shaft is perpendicular to the radial direction, and support bushings are provided at both ends of the rotating shaft, and any one of the support bushings is connected to the housing;

[0016] The valve plate and / or the elastic member are sleeved on the rotating shaft.

[0017] Furthermore, a positioning groove is provided on the first cylinder and / or the second cylinder, and a positioning boss is provided on the side of the shell, and the positioning groove corresponds to the position of the positioning boss.

[0018] Furthermore, the valve plate is provided with an extension portion, and both ends of the extension portion are bent toward the same side to form a bent portion;

[0019] Any of the bending portions is provided with a groove, and the rotating shaft is sleeved in the groove.

[0020] Furthermore, it also includes a partition plate, which is arranged between the first cylinder and the valve plate, and has air holes.

[0021] The area of the valve plate is larger than the area of the air hole and smaller than the area of the partition.

[0022] Furthermore, a gasket is included, and the gasket is arranged between the partition and the valve plate.

[0023] Furthermore, the adjustment component includes:

[0024] an adjusting hole, provided on the valve plate and penetrating the valve plate in the axial direction;

[0025] An adjusting bolt and an adjusting nut, wherein the adjusting bolt passes through the adjusting hole, is connected to the adjusting nut, and abuts against the end of the elastic member.

[0026] Furthermore, a fixing hole is provided on a side of the shell facing away from the cylinder;

[0027] The elastic member is a torsion spring, and the torsion spring is sleeved on the rotating shaft;

[0028] One end of the torsion spring extends toward the outside of the cylinder and passes through the fixing hole.

[0029] The other end of the torsion spring extends toward the inner side of the cylinder and abuts against the adjustment component.

[0030] Further, a support portion is provided on the rotating shaft, and the diameter of the support portion is adapted to the inner diameter of the torsion spring.

[0031] The beneficial effects brought by the technical solution provided by the embodiment of the present invention are as follows:

[0032] (1) In the embodiment of the present invention, the built-in spring-adjustable exhaust valve has a simple structure. The elastic member is installed inside the exhaust valve, reducing the overall volume and cost. Moreover, by setting an adjusting bolt on the valve plate to adjust the pre-tightening force of the torsion spring, continuous and precise adjustment of the pre-tightening force of the torsion spring can be achieved, which can meet the muffling requirements of different vehicle models, optimizing the problem of limited number of holes drilled on the valve body of the current built-in torsion spring and poor adjustability. In addition, a support portion for supporting the torsion spring is provided on the rotating shaft, enabling the torsion spring to always contract perpendicular to the axial direction during rotation, ensuring the torque consistency of the torsion spring and guaranteeing the stability of the built-in spring-adjustable exhaust valve in controlling the back pressure.

[0033] (2) In the embodiment of the present invention, the first cylinder body and the second cylinder body are adopted, and the connecting part between the valve plate and the rotating shaft assembly is designed with a groove structure, which is beneficial to the installation of components and convenient for subsequent maintenance and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is the front view of the built-in spring-adjustable exhaust valve in the embodiment of the present invention.

[0035] Figure 2 It is the left view of the built-in spring-adjustable exhaust valve in the embodiment of the present invention.

[0036] Figure 3 It is the exploded view of the built-in spring-adjustable exhaust valve in the embodiment of the present invention.

[0037] Figure 4 It is the partial exploded view of the built-in spring-adjustable exhaust valve in the embodiment of the present invention.

[0038] Figure 5 It is the structural schematic diagram of the rotating shaft in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It 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", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should 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 directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two elements. It can be a wireless connection or a wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0042] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0043] The embodiments of the present utility model provide an in - built spring - adjustable exhaust valve, including:

[0044] A cylinder body 1, extending along the axial direction, including an air inlet end 1a and an air outlet end 1b. A through - hole is provided on the side of the cylinder body 1, and the through - hole penetrates the cylinder body 1 along the radial direction. A rotating shaft assembly 2 is provided at the through - hole, and the extending direction of the rotating shaft assembly 2 is perpendicular to the radial direction;

[0045] A valve plate 3 is arranged in the cylinder body 1. The valve plate 3 is rotatably connected to the rotating shaft assembly 2 and can be opened or closed towards the air outlet end 1b;

[0046] An elastic member 4 is arranged on the rotating shaft assembly 2. One end of the elastic member 4 is connected to the cylinder body 1, and the other end of the elastic member 4 is connected to the valve plate 3;

[0047] An adjusting assembly 5 is connected to the end of the elastic member 4, and the adjusting assembly 5 is used to adjust the initial elastic force of the elastic member 4.

[0048] The in - built spring exhaust valve of the present application is used in the components of a muffler. As Figure 1 shown, the cylinder body 1 extends from left to right, and the air flow enters the cylinder body 1 from the left. As Figure 2As shown, the valve plate 3 is sleeved on the rotating shaft assembly 2 and can be opened or closed. Since one end of the elastic member 4 is connected to the cylinder body 1 and the other end is connected to the valve plate 3, when the air flow is small, the initial elastic force of the elastic member 4 can make the valve plate 3 open at a small angle to increase the back pressure inside the built-in spring-adjusted exhaust valve and reduce high-frequency noise; when the air flow is large, the valve plate 3 is fully opened to increase the gas flow area, and the air flow flows out from the right side of the cylinder body 1 to reduce flow noise.

[0049] The rotating shaft assembly 2, the valve plate 3, the elastic member 4, and the adjusting assembly 5 can be arranged at the end of the cylinder body 1 or in the middle of the cylinder body 1. In a specific embodiment, the cylinder body 1 includes:

[0050] The first cylinder body 11, one end of the first cylinder body 11 is the air inlet end 1a, and the other end is provided with the valve plate 3;

[0051] The second cylinder body 12, one end of the second cylinder body 12 is the air outlet end 1b, and the other end is provided with the through hole. The other end of the second cylinder body 12 is fixedly connected to the other end of the first cylinder body 11.

[0052] As Figure 1 shown, the first cylinder body 11 and the second cylinder body 12 are connected in sequence from left to right. The left end of the first cylinder body 11 is the air inlet end 1a, and the right end is provided with the valve plate 3. The left end of the second cylinder body 12 is provided with the through hole, and the right end is the air outlet end 1b. This structure is conducive to installing components and combining them into a whole, facilitating installation in the components of the muffler. The first cylinder body 11 and the second cylinder body 12 can be connected by welding.

[0053] Further, the rotating shaft assembly 2 includes:

[0054] The housing 21, which is arranged in a U-shaped structure. The opening of the housing 21 faces the second cylinder body 12 and covers the through hole;

[0055] The rotating shaft 22, which is arranged in the housing 21. The extending direction of the rotating shaft 22 is perpendicular to the radial direction. Both ends of the rotating shaft 22 are provided with support liners 23, and any one of the support liners 23 is connected to the housing 21;

[0056] The valve plate 3 and / or the elastic member 4 is sleeved on the rotating shaft 22.

[0057] As Figure 2 and Figure 3As shown, the rotating shaft assembly 2 is provided in the through hole. The valve plate 3 is sleeved on the rotating shaft 22 and can be opened or closed towards the right end. During installation, both ends of the rotating shaft 22 are respectively fixed to both ends of the housing 21 through the support bushings 23, and then the opening of the housing 21 covers the through hole. The housing 21 and the cylinder 1 are welded and connected, and then the first cylinder 11 and the second cylinder 12 are welded and connected to complete the installation.

[0058] Further, a positioning groove 110 is provided on the first cylinder 11 and / or the second cylinder 12, and a positioning boss 211 is provided on the side of the housing 21. The positions of the positioning groove 110 and the positioning boss 211 correspond. It can be understood that the positioning boss 211 and the positioning groove 110 are beneficial to quickly position the housing 21 on the second cylinder 12 and are beneficial to quick installation.

[0059] The valve plate 3 is sleeved on the rotating shaft 22. In a specific embodiment, as Figure 3 shown, the valve plate 3 is provided with an extension part 31. Both ends of the extension part 31 are bent towards the same side to form a bent part;

[0060] A groove 32 is provided on any one of the bent parts, and the groove 32 is sleeved on the rotating shaft 22.

[0061] As Figure 3 shown, this structural design is stable and reasonable, which can ensure the stability of the valve plate 3 during rotation and prevent the valve plate 3 from deflecting or colliding with the cylinder 1 during rotation. Further, the groove 32 is semi-circular.

[0062] Further, a partition plate 6 is further included. The partition plate 6 is provided between the first cylinder 11 and the valve plate 3, and air holes 6a are provided on the partition plate 6.

[0063] The area of the valve plate 3 is larger than the area of the air holes 6a and smaller than the area of the partition plate 6. As Figure 3 shown, when the valve plate 3 is not opened, the partition plate 6 can improve the sealing performance between the valve plate 3 and the cylinder 1.

[0064] Further, the partition plate 6 includes a flanging. The flanging extends axially, and the flanging is fixedly connected to the first cylinder 11. As Figure 3 shown, the flanging extends towards the left, and the flanging and the right side of the first cylinder 11 are spot welded to improve the stability of the position of the partition plate 6.

[0065] Further, a gasket 7 is further included. The gasket 7 is provided between the partition plate 6 and the valve plate 3. As Figure 3As shown, when the air flow becomes smaller, the valve plate 3 returns to its original state under the elastic force of the elastic member 4. The gasket 7 can play a buffering role and prevent abnormal noise caused by collision between the valve plate 3 and the partition plate 6. The material of the gasket 7 is not limited. The gasket 7 can be rubber, elastic plastic, etc. In a specific embodiment, the material of the gasket 7 is a steel wire gasket 7, and the steel wire gasket 7 is corrosion-resistant and has a long service life.

[0066] In the present application, the position and specific configuration of the adjusting assembly 5 are not limited. The adjusting assembly 5 is provided on the cylinder body 1 and connected to the end of the elastic member 4, or can also be provided on the valve plate 3 and connected to the end of the elastic member 4. In a specific embodiment, as Figure 3 and Figure 4 shown, the adjusting assembly 5 includes:

[0067] An adjusting hole is provided on the valve plate 3 and axially penetrates the valve plate 3;

[0068] An adjusting bolt 51 and an adjusting nut. The adjusting bolt 51 passes through the adjusting hole, is connected to the adjusting nut, and abuts against the end of the elastic member 4.

[0069] During installation, by rotating the adjusting bolt 51, the interval between the head of the adjusting bolt 51 and the valve plate 3 can be adjusted, and the initial angle of the elastic member 4 can be adjusted, thereby changing the initial pre-tightening force of the elastic member 4, and thus adjusting the torque value when the valve plate 3 is opened. By adjusting the screwing depth of the adjusting bolt 51 and observing the scale value on the adjusting bolt 51, continuous and precise adjustment can be achieved. This structural design has a wide application range and can be applied to the muffling requirements of different vehicle models.

[0070] Further, a fixing hole is provided on the side of the housing 21 facing away from the cylinder body 1;

[0071] The elastic member 4 is a torsion spring, and the torsion spring is sleeved on the rotating shaft 22;

[0072] One end of the torsion spring extends towards the outside of the cylinder body 1 and passes through the fixing hole,

[0073] The other end of the torsion spring extends towards the inside of the cylinder body 1 and abuts against the adjusting assembly 5.

[0074] As Figure 4 shown, the left end of the torsion spring passes upward through the fixing hole, and thus this end can be kept fixed. The right end of the torsion spring extends downward and abuts against the adjusting bolt 51. By adjusting the adjusting assembly 5, the elastic force of the torsion spring can be changed, and thus the initial elastic force required for the valve plate 3 to rotate can be changed. In the present application, torsion springs with different stiffnesses or numbers of turns can be replaced according to actual needs.

[0075] Further, a support portion 221 is provided on the rotating shaft 22, and the diameter of the support portion 221 is adapted to the inner diameter of the torsion spring. As Figure 4 and Figure 5 shown, the support portion 221 can be provided in one or more segments, and the length of the support portion 221 can be unlimited. Further, both ends of the rotating shaft 22 are provided with the support portions 221, and the two support portions 221 are arranged at intervals. The support portion 221 can support the torsion spring. When the adjusting assembly 5 adjusts the initial pre-tightening force of the torsion spring, the support portion 221 can ensure the uniformity of the torsion of the torsion spring, prevent out-of-roundness, and ensure the stability and consistency of the performance of the torsion spring.

[0076] During installation, the torsion spring is sleeved on the rotating shaft 22, and then the rotating shaft 22 is clamped into the groove 32 of the bent portion of the valve plate 3. Support seats 23 are respectively installed at both ends of the rotating shaft 22. The torsion spring is rotated so that one end of the torsion spring is inserted into the fixing hole of the housing 21, and at the same time the support seat 23 is clamped into both ends of the housing 21. At this time, the other end of the torsion spring abuts against the adjusting bolt 51 on the valve plate 3. The adjusting bolt 51 is rotated to adjust the initial pre-tightening force of the torsion spring, and then the adjusting nut is installed on the adjusting bolt 51, and the adjusting nut is welded to the valve plate 3 to prevent the adjusting bolt 51 from loosening, and then the housing 21 and the second cylinder 12 are welded. At the same time, the partition plate 6 and the gasket 7 are successively welded on the first cylinder 11, and finally the first cylinder 11 and the second cylinder 12 are welded, so as to complete the installation of the built-in spring-adjusting exhaust valve. Then, the whole built-in spring-adjusting exhaust valve is inserted into the square groove opened in the rear end pipe of the muffler.

[0077] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A built-in spring-regulated exhaust valve, characterized in that: Comprising: A cylinder body (1), extending axially, including an air inlet end (1a) and an air outlet end (1b). A through hole is provided on the side of the cylinder body (1), the through hole penetrates the cylinder body (1) radially, and a rotating shaft assembly (2) is provided at the through hole. The extending direction of the rotating shaft assembly (2) is perpendicular to the radial direction; A valve plate (3), arranged in the cylinder body (1), the valve plate (3) is rotatably connected to the rotating shaft assembly (2) and can be opened or closed towards the air outlet end (1b); An elastic member (4), arranged on the rotating shaft assembly (2), one end of the elastic member (4) is connected to the cylinder body (1), and the other end of the elastic member (4) is connected to the valve plate (3); An adjusting assembly (5), the adjusting assembly (5) is connected to the end of the elastic member (4), and the adjusting assembly (5) is used to adjust the initial elastic force of the elastic member (4).

2. The built-in spring-adjustable exhaust valve according to claim 1, wherein The cylinder body (1) includes: A first cylinder body (11), one end of the first cylinder body (11) is the air inlet end (1a), and the other end is provided with the valve plate (3); A second cylinder body (12), one end of the second cylinder body (12) is the air outlet end (1b), and the other end is provided with the through hole. The other end of the second cylinder body (12) is fixedly connected to the other end of the first cylinder body (11).

3. The built-in spring-adjustable exhaust valve according to claim 2, characterized in that, The rotating shaft assembly (2) includes: A housing (21), arranged in a U-shaped structure, the opening of the housing (21) faces the second cylinder body (12) and covers the through hole; A rotating shaft (22), arranged in the housing (21), the extending direction of the rotating shaft (22) is perpendicular to the radial direction, and support pads (23) are provided at both ends of the rotating shaft (22). Any one of the support pads (23) is connected to the housing (21); The valve plate (3) and / or the elastic member (4) is sleeved on the rotating shaft (22).

4. The built-in spring-adjusting exhaust valve according to claim 3, wherein A positioning groove (110) is provided on the first cylinder body (11) and / or the second cylinder body (12), and a positioning boss (211) is provided on the side of the housing (21). The position of the positioning groove (110) corresponds to that of the positioning boss (211).

5. The built-in spring-adjusting exhaust valve according to claim 3, wherein The valve plate (3) is provided with an extension part (31), and both ends of the extension part (31) are bent towards the same side to form a bent part; A groove (32) is provided on any one of the bent parts, and the groove (32) is sleeved on the rotating shaft (22).

6. The built-in spring-adjusting exhaust valve according to claim 2, wherein It further includes a partition plate (6), the partition plate (6) is arranged between the first cylinder body (11) and the valve plate (3), and air holes (6a) are provided on the partition plate (6), The area of the valve plate (3) is larger than the area of the air holes (6a) and smaller than the area of the partition plate (6).

7. The built-in spring-adjusting exhaust valve according to claim 6, wherein It further includes a gasket (7), and the gasket (7) is arranged between the partition plate (6) and the valve plate (3).

8. The built-in spring-adjustable exhaust valve according to claim 3, characterized in that, The adjusting assembly (5) includes: An adjusting hole is provided on the valve plate (3) and axially penetrates the valve plate (3); An adjusting bolt (51) and an adjusting nut, the adjusting bolt (51) passes through the adjusting hole, is connected to the adjusting nut, and abuts against the end of the elastic member (4).

9. The built-in spring-adjustable exhaust valve according to claim 8, wherein A fixing hole is provided on the side of the housing (21) facing away from the cylinder body (1); The elastic member (4) is a torsion spring, and the torsion spring sleeves the rotating shaft (22); One end of the torsion spring extends towards the outside of the cylinder body (1) and passes through the fixing hole, The other end of the torsion spring extends towards the inside of the cylinder body (1) and abuts against the adjusting assembly (5).

10. The built-in spring-adjustable exhaust valve according to claim 9, wherein A support portion (221) is provided on the rotating shaft (22), and the diameter of the support portion (221) is adapted to the inner diameter of the torsion spring.

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