Waterproof valve

Abstract

A waterproof valve includes a housing, a valve assembly mounted in the housing, and a pivot shaft cooperating with the valve assembly. The pivot shaft is configured to be capable of driving the valve assembly to rotate in the shell. The shell comprises an inner cavity, and the valve assembly is installed in the inner cavity. The valve assembly comprises a mounting base and a metal sheet fixed to the mounting base. The installation base is provided with an installation part and a protruding part protruding out of the installation part in the axial direction of the shell. And the convex part is fixed with the pivot shaft. The installation part is located on one side of the pivot shaft in the axial direction of the shell. The metal sheet comprises a fixing part fixed to the mounting part and a flanging part protruding out of the mounting part in the radial direction of the shell. And the flanging part is configured to elastically abut against the inner wall of the shell in a sealing mode so as to separate the first space from the second space when the valve assembly is located at the closing position.

Description

Technical Field

[0001] This utility model relates to a waterproof valve and belongs to the technical field of engine exhaust system. Background Technology

[0002] With the continuous development of automobiles, vehicles may need to wade through water in some extreme situations. When a vehicle wades through water, water can enter the interior through the exhaust system, easily causing damage to related components.

[0003] Waterproof valves, as components that can prevent water from entering the vehicle through the exhaust system, are receiving increasing attention.

[0004] However, the waterproof valves installed in the exhaust system need to be able to withstand high temperatures and reliably shut off the exhaust system to prevent water from flowing in when the vehicle is wading through water. There is still room for improvement in the waterproof valves in related technologies. Utility Model Content

[0005] The purpose of this invention is to provide a waterproof valve with an improved structure.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a waterproof valve, comprising: a housing, a valve assembly installed in the housing, and a pivot shaft cooperating with the valve assembly; the pivot shaft is configured to drive the valve assembly to rotate in the housing; the housing includes an inner cavity, the inner cavity including a first space located on one side of the valve assembly and a second space located on the other side of the valve assembly; the valve assembly is installed in the inner cavity, the valve assembly including a mounting base and a metal plate fixed to the mounting base, the mounting base having a mounting portion and a protrusion extending from the mounting portion along the axial direction of the housing, the protrusion being fixed to the pivot shaft, the mounting portion being located on one side of the pivot shaft along the axial direction of the housing, the metal plate including a fixing portion fixed to the mounting portion and a flange portion extending from the mounting portion along the radial direction of the housing, the flange portion being configured to elastically abut against the inner wall of the housing to seal, thereby separating the first space and the second space when the valve assembly is in the closed position.

[0007] As a further improvement of this utility model, the protrusion is provided with a mounting hole through which the pivot shaft passes.

[0008] As a further improvement of the present invention, the protrusion includes a first protrusion and a second protrusion. The first protrusion is provided with a first mounting hole that penetrates the first protrusion radially along the housing. The second protrusion is provided with a first mounting hole that penetrates the second protrusion radially along the housing. The mounting hole includes the first mounting hole and the second mounting hole.

[0009] As a further improvement of the present invention, the first protrusion is provided with a first fixing hole perpendicular to the first mounting hole, and the pivot shaft is provided with a first mating hole aligned with the first fixing hole.

[0010] The second protrusion is provided with a second fixing hole perpendicular to the second mounting hole, and the pivot shaft is provided with a second mating hole aligned with the second fixing hole;

[0011] The valve assembly includes a first fastener and a second fastener, wherein the first fastener engages with the first fixing hole and the first mating hole to fix the pivot shaft to the first protrusion; and the second fastener engages with the second fixing hole and the second mating hole to fix the pivot shaft to the second protrusion.

[0012] As a further improvement of the present invention, the metal plate is provided with an annular notch located on the inner side of the flange portion, the flange portion is exposed inward in the annular notch, and the flange portion is configured to be able to elastically deform into the annular notch.

[0013] As a further improvement of this utility model, the annular notch is located on the periphery of the mounting portion.

[0014] As a further improvement of the present invention, the valve assembly further includes a pressure plate, and the metal plate is clamped between the mounting part and the pressure plate.

[0015] As a further improvement of the present invention, the valve assembly further includes a fastening element that fixes the pressure plate, the metal plate and the mounting part together.

[0016] As a further improvement of the present invention, the pressure plate is provided with a first through hole, the metal plate is provided with a second through hole, and the fastening element passes through the first through hole and the second through hole.

[0017] As a further improvement of the present invention, the mounting part is a solid structure, the metal plate is provided with a first hollow part located in the middle of the metal plate, and the pressure plate is provided with a second hollow part located in the middle of the pressure plate.

[0018] As a further improvement of the present invention, the housing is provided with a first mounting seat and a second mounting seat that protrude radially along the housing. The protrusion directions of the first mounting seat and the second mounting seat are opposite. The first mounting seat is provided with a first mounting space, and the second mounting seat is provided with a second mounting space.

[0019] The waterproof valve includes a first bushing housed in the first installation space and a second bushing housed in the second installation space. The first bushing has a first central hole, and the second bushing has a second central hole. The pivot shaft passes through the first central hole and the second central hole.

[0020] As a further improvement of the present invention, the waterproof valve is further provided with a cover fixed to the second mounting seat to cover the second bushing.

[0021] As a further improvement of the present invention, the first mounting base is provided with a limiting protrusion, and the waterproof valve includes a driving part fixed to one end of the pivot shaft. The driving part is provided with a limiting surface that cooperates with the limiting protrusion. The driving part is configured to cooperate directly or indirectly with a driving device. The driving device is used to drive the driving part and drive the pivot shaft to rotate together.

[0022] As a further improvement of the present invention, the housing is provided with a base portion protruding into the inner cavity, the base portion is provided with an abutment surface exposed in the inner cavity, the abutment surface is an inclined surface extending along the axial direction of the housing, and the flange portion elastically abuts and seals with the abutment surface.

[0023] Compared to existing technologies, the valve assembly of this invention includes a mounting base and a metal plate fixed to the mounting base. The mounting portion is located on one side of the pivot shaft along the axial direction of the housing. The flanged portion is configured to elastically abut against the inner wall of the housing to seal, thereby separating the first space from the second space when the valve assembly is in the closed position. This invention improves sealing performance by using the metal plate and the flanged portion to achieve sealing. Furthermore, when the valve assembly rotates, the flanged portion can better scrape against the inner wall of the housing, thus reducing the impact of dust and other foreign objects on the rotation of the valve assembly. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the waterproof valve of this utility model in one embodiment;

[0025] Figure 2 yes Figure 1 3D exploded view;

[0026] Figure 3 yes Figure 2 Exploded 3D view of the valve assembly;

[0027] Figure 4 This is a three-dimensional exploded view of the waterproof valve of this utility model from another angle;

[0028] Figure 5 yes Figure 1 The right view;

[0029] Figure 6 yes Figure 1 Top view;

[0030] Figure 7 yes Figure 1 Rear view;

[0031] Figure 8 yes Figure 1 The main view;

[0032] Figure 9 It is along Figure 6 Schematic diagram of the cross section of line AA in the middle;

[0033] Figure 10 yes Figure 9 A magnified view of part B circled in the middle. Detailed Implementation

[0034] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Where several specific embodiments exist, features in these embodiments can be combined with each other without conflict. When the description relates to the drawings, unless otherwise stated, the same numbers or symbols in different drawings represent the same or similar elements. The content described in the following exemplary embodiments does not represent all embodiments of this utility model; rather, they are merely examples of products consistent with this utility model and as described in the claims.

[0035] The terminology used in this invention is for the purpose of describing specific embodiments only and is not intended to limit the scope of protection of this invention. It should be understood that terms such as "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish the features.

[0036] Please refer to Figures 1 to 10 As shown, this utility model discloses a waterproof valve 100, which is applied in an exhaust system. The waterproof valve 100 includes a housing 1, a valve assembly 2 installed in the housing 1, and a pivot shaft 3 that cooperates with the valve assembly 2. The pivot shaft 3 is configured to drive the valve assembly 2 to rotate between an open position and a closed position within the housing 1.

[0037] In one embodiment of this utility model, the housing 1 is a metal housing, which includes an inner cavity 10. The inner cavity 10 includes a first space 101 located on one side (e.g., the left side) of the valve assembly 2 and a second space 102 located on the other side (e.g., the right side) of the valve assembly 2. Those skilled in the art will understand that the term "open position" means that the first space 101 and the second space 102 are connected; the term "closed position" means that the first space 101 and the second space 102 are almost not connected or not connected at all.

[0038] The valve assembly 2 is installed in the inner cavity 10. The valve assembly 2 includes a mounting base 21, a metal plate 22 fixed to the mounting base 21, and a pressure plate 23. The mounting base 21 has a mounting portion 211 and a protrusion 212 protruding from the mounting portion 211 along the axial direction of the housing 1. The protrusion 212 is fixed to the pivot shaft 3. The mounting portion 211 is located on one side (e.g., the right side) of the pivot shaft 3 along the axial direction of the housing 1. The protrusion 212 has a mounting hole 2120 through which the pivot shaft 3 passes.

[0039] In the embodiment illustrated in this utility model, the protrusion 212 includes a first protrusion 2121 and a second protrusion 2122. The first protrusion 2121 is provided with a first mounting hole 2121a that penetrates the first protrusion 2121 radially along the housing 1 and a first fixing hole 2121b that is perpendicular to the first mounting hole 2121a.

[0040] The second protrusion 2122 is provided with a first mounting hole 2121a that penetrates the second protrusion 2122 radially along the housing 1 and a second fixing hole 2122b that is perpendicular to the second mounting hole 2122a.

[0041] In the embodiment illustrated in this utility model, the mounting portion 211 and the protrusion 212 are integrally formed. The first protrusion 2121 and the second protrusion 2122 are arranged radially spaced along the housing 1. The mounting hole 2120 includes the first mounting hole 2121a and the second mounting hole 2122a.

[0042] The pivot shaft 3 is provided with a first mating hole 31 aligned with the first fixing hole 2121b and a second mating hole 32 aligned with the second fixing hole 2122b. The pivot shaft 3 is also provided with a limiting plate 33 and an end 34 protruding from the limiting plate 33.

[0043] When the pivot shaft 3 is inserted into the first mounting hole 2121a and the second mounting hole 2122a and is fully inserted, the first fixing hole 2121b aligns with the first mating hole 31, and the second fixing hole 2122b aligns with the second mating hole 32. In the embodiment illustrated in this utility model, the valve assembly 2 further includes a first fastener 24 and a second fastener 25. The first fastener 24 engages with the first fixing hole 2121b and the first mating hole 31 to fix the pivot shaft 3 to the first protrusion 2121; the second fastener 25 engages with the second fixing hole 2122b and the second mating hole 32 to fix the pivot shaft 3 to the second protrusion 2122. In one embodiment of this utility model, both the first fastener 24 and the second fastener 25 are screws.

[0044] The metal plate 22 includes a fixing portion 221 fixed to the mounting portion 211, a flange portion 222 protruding radially from the mounting portion 211 along the housing 1, and an annular recess 223 located inside the flange portion 222. The flange portion 222 is configured to elastically abut and seal against the inner wall of the housing 1 to separate the first space 101 from the second space 102 when the valve assembly 2 is in the closed position. The flange portion 222 is exposed inwardly in the annular recess 223, and the flange portion 222 is configured to elastically deform into the annular recess 223. In the embodiment illustrated in this utility model, the annular recess 223 is located on the periphery of the mounting portion 211 so that the elastic deformation of the flange portion 222 is not affected by the mounting portion 211.

[0045] In the embodiment illustrated in this utility model, the metal plate 22 is clamped between the mounting portion 211 and the pressure plate 23. Specifically, the valve assembly 2 further includes a fastening element 26 that secures the pressure plate 23, the metal plate 22, and the mounting portion 211 together. In one embodiment of this utility model, the fastening element 26 is a screw.

[0046] The pressure plate 23 is provided with a first through hole 230, the metal plate 22 is provided with a second through hole 220, and the fastening element 26 passes through the first through hole 230 and the second through hole 220.

[0047] In the embodiment illustrated in this utility model, the mounting part 211 is a solid structure to block water when the valve assembly 2 is in the closed position. The metal plate 22 has a first hollow part 224 located in the middle of the metal plate 22, and the pressure plate 23 has a second hollow part 234 located in the middle of the pressure plate 23, thereby facilitating weight reduction.

[0048] In the embodiment illustrated in this utility model, the housing 1 further comprises a first mounting seat 11 and a second mounting seat 12 protruding radially along the housing 1, wherein the protrusion directions of the first mounting seat 11 and the second mounting seat 12 are opposite. The first mounting seat 11 is provided with a first mounting space 111, and the second mounting seat 12 is provided with a second mounting space 121.

[0049] The waterproof valve 100 further includes a first bushing 4 housed in the first mounting space 111, a second bushing 5 housed in the second mounting space 121, a cover 6 that covers the second bushing 5, and a drive unit 7 fixed to one end of the pivot shaft 3. In the embodiment illustrated in this utility model, the cover 6 is welded and fixed to the second mounting base 12 and is located inside the second mounting base 12.

[0050] The first bushing 4 has a first central hole 41, and the second bushing 5 has a second central hole 51. The pivot shaft 3 passes through the first central hole 41 and the second central hole 51. The limiting plate 33 of the pivot shaft 3 abuts against the first bushing 4 to achieve limiting. The driving part 7 is welded and fixed to the end 34 of the pivot shaft 3. In the embodiment shown in the figure, the first mounting base 11 has a limiting protrusion 112, and the driving part 7 has a limiting surface 71 that cooperates with the limiting protrusion 112. The driving part 7 is configured to cooperate directly or indirectly with a driving device (not shown). The driving device is used to drive the driving part 7 and drive the pivot shaft 3 to rotate together, so that the valve assembly 2 can rotate between the open position and the closed position.

[0051] Please combine Figure 9 as well as Figure 10 As shown in the illustrated embodiment of this utility model, the housing 1 is provided with a base portion 13 protruding into the inner cavity 10. The base portion 13 is provided with an abutment surface 131 exposed in the inner cavity 10. The abutment surface 131 is an inclined surface extending along the axial direction of the housing 1. The flange portion 222 elastically abuts and seals with the abutment surface 131. By providing the abutment surface 131, it is beneficial to realize the rotation of the flange portion 222. In the illustrated embodiment of this utility model, the flange portion 222 is also provided with an inclined guide surface 225 located at the free end of the flange portion 222 and bent into the inner cavity 10. The inclined guide surface 225 is used to guide the flange portion 222 to cooperate with the abutment surface 131 when the flange portion 222 rotates.

[0052] Compared to existing technologies, the valve assembly 2 of this invention includes a mounting base 21 and a metal plate 22 fixed to the mounting base 21. The mounting portion 211 is located on one side of the pivot shaft 3 along the axial direction of the housing 1. The flange portion 222 is configured to elastically abut against the inner wall of the housing 1 to seal, thereby separating the first space 101 from the second space 102 when the valve assembly 2 is in the closed position. This invention improves sealing performance by setting the metal plate 22 and achieving sealing with the flange portion 222. In addition, when the valve assembly 2 rotates, the flange portion 222 can better scrape against the inner wall of the housing 1, thereby helping to reduce the impact of dust and other foreign objects on the rotation of the valve assembly 2.

[0053] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A waterproof valve, characterized in that, The device includes a housing, a valve assembly mounted in the housing, and a pivot shaft cooperating with the valve assembly. The pivot shaft is configured to drive the valve assembly to rotate within the housing. The housing includes an inner cavity, which includes a first space located on one side of the valve assembly and a second space located on the other side of the valve assembly. The valve assembly is mounted in the inner cavity and includes a mounting base and a metal plate fixed to the mounting base. The mounting base has a mounting portion and a protrusion extending from the mounting portion along the axial direction of the housing. The protrusion is fixed to the pivot shaft. The mounting portion is located on one side of the pivot shaft along the axial direction of the housing. The metal plate includes a fixing portion fixed to the mounting portion and a flange portion extending from the mounting portion radially along the housing. The flange portion is configured to elastically abut against the inner wall of the housing to seal and isolate the first space from the second space when the valve assembly is in a closed position.

2. The waterproof valve as described in claim 1, characterized in that: The protrusion is provided with a mounting hole through which the pivot shaft passes.

3. The waterproof valve as described in claim 2, characterized in that: The protrusion includes a first protrusion and a second protrusion. The first protrusion has a first mounting hole that penetrates the first protrusion radially along the housing. The second protrusion has a first mounting hole that penetrates the second protrusion radially along the housing. The mounting hole includes the first mounting hole and the second mounting hole.

4. The waterproof valve as described in claim 3, characterized in that: The first protrusion is provided with a first fixing hole perpendicular to the first mounting hole, and the pivot shaft is provided with a first mating hole aligned with the first fixing hole; The second protrusion is provided with a second fixing hole perpendicular to the second mounting hole, and the pivot shaft is provided with a second mating hole aligned with the second fixing hole; The valve assembly includes a first fastener and a second fastener, wherein the first fastener engages with the first fixing hole and the first mating hole to fix the pivot shaft to the first protrusion; and the second fastener engages with the second fixing hole and the second mating hole to fix the pivot shaft to the second protrusion.

5. The waterproof valve as described in claim 1, characterized in that: The metal plate has an annular notch located inside the flanged portion, the flanged portion is exposed inward in the annular notch, and the flanged portion is configured to elastically deform into the annular notch.

6. The waterproof valve as described in claim 5, characterized in that: The annular notch is located on the periphery of the mounting part.

7. The waterproof valve as described in claim 1, characterized in that: The valve assembly also includes a pressure plate, and the metal plate is clamped between the mounting portion and the pressure plate.

8. The waterproof valve as described in claim 7, characterized in that: The valve assembly also includes fastening elements that secure the pressure plate, the metal plate, and the mounting portion together.

9. The waterproof valve as described in claim 8, characterized in that: The pressure plate has a first through hole, the metal plate has a second through hole, and the fastening element passes through the first through hole and the second through hole.

10. The waterproof valve as described in claim 7, characterized in that: The mounting part is a solid structure, the metal plate has a first hollow part located in the middle of the metal plate, and the pressure plate has a second hollow part located in the middle of the pressure plate.

11. The waterproof valve as described in claim 1, characterized in that: The housing is provided with a first mounting seat and a second mounting seat that protrude radially along the housing. The protrusion directions of the first mounting seat and the second mounting seat are opposite. The first mounting seat is provided with a first mounting space, and the second mounting seat is provided with a second mounting space. The waterproof valve includes a first bushing housed in the first installation space and a second bushing housed in the second installation space. The first bushing has a first central hole, and the second bushing has a second central hole. The pivot shaft passes through the first central hole and the second central hole.

12. The waterproof valve as described in claim 11, characterized in that: The waterproof valve is also provided with a cover fixed to the second mounting base to cover the second bushing.

13. The waterproof valve as described in claim 11, characterized in that: The first mounting base is provided with a limiting protrusion. The waterproof valve includes a drive part fixed to one end of the pivot shaft. The drive part is provided with a limiting surface that cooperates with the limiting protrusion. The drive part is configured to cooperate directly or indirectly with a drive device. The drive device is used to drive the drive part and drive the pivot shaft to rotate together.

14. The waterproof valve according to any one of claims 1 to 13, characterized in that: The housing has a base portion protruding into the inner cavity, the base portion having an abutment surface exposed in the inner cavity, the abutment surface being an inclined surface extending along the axial direction of the housing, and the flange portion elastically abutting and sealing with the abutment surface.

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