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] The invention relates to a waterproof valve, belonging to the technical field of engine exhaust systems. Background Art

[0002] With the continuous development of automobiles, in some extreme cases, vehicles need to wade through water. When a vehicle wades through water, water will enter the interior through the vehicle's exhaust system, which can easily cause damage to related parts.

[0003] As a component that can prevent water from entering the interior of the vehicle through the exhaust system, the waterproof valve is becoming more and more important.

[0004] However, the waterproof valve provided in the exhaust system needs to be able to withstand high temperatures and needs to be able to reliably close the exhaust system to prevent water from flowing in when the vehicle is wading. There is still room for improvement in the waterproof valve in the related art. Summary of the invention

[0005] An object of the present invention is to provide a waterproof valve with an improved structure.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a waterproof valve, comprising: a housing, a valve assembly installed in the housing, and a pivot shaft matched with the valve assembly; the pivot shaft is configured to drive the valve assembly to rotate in the housing; the housing comprises an inner cavity, the inner cavity comprises 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 comprises a mounting base and a metal sheet fixed to the mounting base, the mounting base is provided with a mounting portion and a protruding portion protruding from the mounting portion along the axial direction of the housing, the protruding portion 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 sheet comprises a fixing portion fixed to the mounting portion and a flange portion protruding from the mounting portion along the radial direction of the housing, the flange portion is configured to elastically abut and seal with the inner wall of the housing to separate the first space from the second space when the valve assembly is in a closed position.

[0007] As a further improved technical solution of the present invention, the protruding portion is provided with a mounting hole for allowing the pivot shaft to pass through.

[0008] As a further improved technical solution 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 along the radial direction of the shell, the second protrusion is provided with a first mounting hole that penetrates the second protrusion along the radial direction of the shell, and the mounting holes include the first mounting hole and the second mounting hole.

[0009] As a further improved technical solution 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 matching 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 matching hole aligned with the second fixing hole;

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

[0012] As a further improved technical solution of the present invention, the metal plate is provided with an annular recess located on the inner side of the flange portion, the flange portion is exposed inwardly in the annular recess, and the flange portion is configured to be able to undergo elastic deformation into the annular recess.

[0013] As a further improved technical solution of the present invention, the annular recess is located at the periphery of the mounting portion.

[0014] As a further improved technical solution of the present invention, the valve assembly further includes a pressure plate, and the metal sheet is clamped between the mounting portion and the pressure plate.

[0015] As a further improved technical solution of the present invention, the valve assembly further includes a fastening element for fixing the pressure plate, the metal sheet and the mounting portion together.

[0016] As a further improved technical solution of the present invention, the pressing 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 improved technical solution of the present invention, the mounting portion is a solid structure, the metal plate is provided with a first hollow portion located in the middle of the metal plate, and the pressing plate is provided with a second hollow portion located in the middle of the pressing plate.

[0018] As a further improved technical solution of the present invention, the shell is provided with a first mounting seat and a second mounting seat protruding in the radial direction of the shell, the protruding 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 received in the first installation space and a second bushing received in the second installation space, the first bushing is provided with a first center hole, the second bushing is provided with a second center hole, and the pivot shaft passes through the first center hole and the second center hole.

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

[0021] As a further improved technical solution of the present invention, the first mounting seat is provided with a limiting protrusion, the waterproof valve includes a driving part fixed to one end of the pivot shaft, the driving part is provided with a limiting surface matching with the limiting protrusion, the driving part is configured to directly or indirectly match with the driving device, and the driving device is used to drive the driving part and drive the pivot shaft to rotate together.

[0022] As a further improved technical solution of the present invention, the shell 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 shell, and the flange portion elastically abuts and seals with the abutment surface.

[0023] Compared with the prior art, the valve assembly of the present invention includes a mounting base and a metal sheet fixed to the mounting base, the mounting portion is located on one side of the pivot shaft along the axial direction of the housing, and the flange portion is configured to elastically abut and seal with the inner wall of the housing to separate the first space from the second space when the valve assembly is in the closed position. The present invention improves the sealing performance by providing the metal sheet and achieving sealing with the aid of the flange portion; in addition, when the valve assembly rotates, the flange portion can better scrape against the inner wall of the housing, thereby helping to reduce the impact of foreign matter such as dust on the rotation of the valve assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a three-dimensional schematic diagram of a waterproof valve of the present invention in one embodiment;

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

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

[0027] Figure 4 is a three-dimensional exploded view of the waterproof valve of the present invention at another angle;

[0028] Figure 5 yes Figure 1 Right view of;

[0029] Figure 6 yes Figure 1 A top view of

[0030] Figure 7 yes Figure 1 Rear view of

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

[0032] Fig. 9 is along Figure 6 Schematic diagram of the cross section along the AA line;

[0033] Fig.10 yes Fig. 9 A partial enlarged view of the circled portion B. DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, where if there are several specific embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers or symbols in different drawings represent the same or similar elements. The contents described in the following exemplary specific embodiments do not represent all embodiments of the present invention. On the contrary, they are only examples of products consistent with the present invention as recorded in the claims of the present invention.

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

[0036] Please refer to Figures 1 to 10 As shown, the present invention discloses a waterproof valve 100, which is applied to an exhaust system, and the waterproof valve 100 comprises a housing 1, a valve assembly 2 installed in the housing 1, and a pivot shaft 3 matched 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 in the housing 1.

[0037] In one embodiment of the present invention, the housing 1 is a metal housing, which includes an inner cavity 10, and 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 so-called "open position" means that the first space 101 is connected to the second space 102; the so-called "closed position" means that the first space 101 is almost not connected to the second space 102 or is not connected at all.

[0038] The valve assembly 2 is installed in the inner cavity 10, and 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 is provided with a mounting portion 211 and a protruding portion 212 protruding from the mounting portion 211 along the axial direction of the housing 1, and the protruding portion 212 is fixed to the pivot shaft 3. The mounting portion 211 is located at one side (e.g., the right side) of the pivot shaft 3 along the axial direction of the housing 1. The protruding portion 212 is provided with a mounting hole 2120 for the pivot shaft 3 to pass through.

[0039] In the illustrated embodiment of the present invention, 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 passing through the first protrusion 2121 in the radial direction of the shell 1 and a first fixing hole 2121b perpendicular to the first mounting hole 2121a.

[0040] The second protruding portion 2122 is provided with a first mounting hole 2121 a penetrating the second protruding portion 2122 in a radial direction of the housing 1 and a second fixing hole 2122 b perpendicular to the second mounting hole 2122 a .

[0041] In the illustrated embodiment of the present invention, the mounting portion 211 is integrally formed with the protruding portion 212. The first protruding portion 2121 and the second protruding portion 2122 are spaced apart along the radial direction of 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 matching hole 31 aligned with the first fixing hole 2121b and a second matching hole 32 aligned with the second fixing hole 2122b. The pivot shaft 3 is also provided with a limit plate 33 and an end portion 34 protruding from the limit plate 33.

[0043] When the pivot shaft 3 is inserted into the first mounting hole 2121a and the second mounting hole 2122a and is in place, the first fixing hole 2121b is aligned with the first matching hole 31, and the second fixing hole 2122b is aligned with the second matching hole 32. In the illustrated embodiment of the present invention, the valve assembly 2 further includes a first fastener 24 and a second fastener 25. The first fastener 24 cooperates with the first fixing hole 2121b and the first matching hole 31 to fix the pivot shaft 3 and the first protrusion 2121 together; the second fastener 25 cooperates with the second fixing hole 2122b and the second matching hole 32 to fix the pivot shaft 3 and the second protrusion 2122 together. In one embodiment of the present invention, the first fastener 24 and the second fastener 25 are both screws.

[0044] The metal plate 22 includes a fixing portion 221 fixed to the mounting portion 211, a flange portion 222 protruding from the mounting portion 211 in the radial direction of the housing 1, and an annular recess 223 located on the inner side of the flange portion 222. The flange portion 222 is configured to elastically abut and seal with 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 be able to elastically deform into the annular recess 223. In the illustrated embodiment of the present invention, the annular recess 223 is located at the periphery of the mounting portion 211 so that the elastic deformation of the flange portion 222 will not be affected by the mounting portion 211.

[0045] In the illustrated embodiment of the present invention, the metal sheet 22 is clamped between the mounting portion 211 and the pressure plate 23. Specifically, the valve assembly 2 further includes a fastening element 26 for fixing the pressure plate 23, the metal sheet 22 and the mounting portion 211 together. In one embodiment of the present invention, the fastening element 26 is a screw.

[0046] The pressing 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 illustrated embodiment of the present invention, the mounting portion 211 is a solid structure to block water when the valve assembly 2 is in the closed position. The metal sheet 22 is provided with a first hollow portion 224 located in the middle of the metal sheet 22, and the pressing plate 23 is provided with a second hollow portion 234 located in the middle of the pressing plate 23, thereby facilitating weight reduction.

[0048] In the illustrated embodiment of the present invention, the housing 1 is further provided with a first mounting seat 11 and a second mounting seat 12 protruding in the radial direction of the housing 1, and the protruding 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 accommodated in the first installation space 111, a second bushing 5 accommodated in the second installation space 121, a shielding cover 6 shielding the second bushing 5, and a driving part 7 fixed to one end of the pivot shaft 3. In the illustrated embodiment of the present invention, the shielding cover 6 is welded and fixed to the second mounting seat 12, and is located on the inner side of the second mounting seat 12.

[0050] The first bushing 4 is provided with a first center hole 41, the second bushing 5 is provided with a second center hole 51, and the pivot shaft 3 passes through the first center hole 41 and the second center hole 51. The limiting plate 33 of the pivot shaft 3 abuts 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 illustrated embodiment of the present invention, the first mounting seat 11 is provided with a limiting protrusion 112, and the driving part 7 is provided with a limiting surface 71 that cooperates with the limiting protrusion 112. The driving part 7 is configured to directly or indirectly cooperate with a driving device (not shown), and 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 Fig. 9 as well as Fig.10 As shown, in the illustrated embodiment of the present invention, the shell 1 is provided with a base portion 13 protruding into the inner cavity 10, and the base portion 13 is provided with an abutment surface 131 exposed in the inner cavity 10, and the abutment surface 131 is an inclined surface extending along the axial direction of the shell 1, and the flange portion 222 elastically abuts and seals with the abutment surface 131. The provision of the abutment surface 131 facilitates the rotation of the flange portion 222. In the illustrated embodiment of the present invention, the flange portion 222 is further provided with an inclined guide surface 225 located at the free end of the flange portion 222 and bent into the inner cavity 10, and 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 with the prior art, the valve assembly 2 of the present invention comprises a mounting base 21 and a metal sheet 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, and the flange portion 222 is configured to elastically abut and seal with 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 present invention improves the sealing performance by providing the metal sheet 22 and achieving sealing with the aid of the flange portion 222; in addition, when the valve assembly 2 rotates, the flange portion 222 can better scrape with the inner wall of the housing 1, thereby helping to reduce the influence of foreign matter such as dust on the rotation of the valve assembly 2.

[0053] The above embodiments are only used to illustrate the present invention but not to limit the technical solutions described in the present invention. The understanding of this specification should be based on the technicians in the relevant technical field. Although this specification has described the present invention in detail with reference to the above embodiments, ordinary technicians in the field should understand that technicians in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A waterproof valve, characterized in that: The invention comprises a shell, a valve assembly installed in the shell and a pivot shaft matched with the valve assembly; the pivot shaft is configured to drive the valve assembly to rotate in the shell; the shell comprises an inner cavity, the inner cavity comprises 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 comprises a mounting base and a metal plate fixed to the mounting base, the mounting base is provided with a mounting portion and a protruding portion protruding from the mounting portion along the axial direction of the shell, the protruding portion is fixed to the pivot shaft, the mounting portion is located on one side of the pivot shaft along the axial direction of the shell, the metal plate comprises a fixing portion fixed to the mounting portion and a flange portion protruding from the mounting portion along the radial direction of the shell, the flange portion is configured to elastically abut and seal with the inner wall of the shell to separate the first space from the second space when the valve assembly is in a closed position.

2. The waterproof valve according to claim 1, characterized in that: The protruding portion is provided with a mounting hole for the pivot shaft to pass through.

3. The waterproof valve according to claim 2, characterized in that: 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 along the radial direction of the shell, the second protrusion is provided with a first mounting hole that penetrates the second protrusion along the radial direction of the shell, and the mounting holes include the first mounting hole and the second mounting hole.

4. The waterproof valve according to 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 matching 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 matching hole aligned with the second fixing hole; The valve assembly includes a first fastener and a second fastener, wherein the first fastener cooperates with the first fixing hole and the first matching hole to fix the pivot shaft and the first protrusion together; the second fastener cooperates with the second fixing hole and the second matching hole to fix the pivot shaft and the second protrusion together.

5. The waterproof valve according to claim 1, characterized in that: The metal plate is provided with an annular recess located at the inner side of the flange portion, the flange portion is exposed inwardly in the annular recess, and the flange portion is configured to be able to elastically deform into the annular recess.

6. The waterproof valve according to claim 5, characterized in that: The annular recess is located at the periphery of the mounting portion.

7. The waterproof valve according to claim 1, characterized in that: The valve assembly further includes a pressure plate, and the metal sheet is clamped between the mounting portion and the pressure plate.

8. The waterproof valve according to claim 7, characterized in that: The valve assembly further includes a fastening element for fixing the pressure plate, the metal sheet, and the mounting portion together.

9. The waterproof valve according to claim 8, characterized in that: The pressing 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.

10. The waterproof valve according to claim 7, characterized in that: The mounting portion is a solid structure, the metal plate is provided with a first hollow portion located in the middle of the metal plate, and the pressing plate is provided with a second hollow portion located in the middle of the pressing plate.

11. The waterproof valve according to claim 1, characterized in that: The housing is provided with a first mounting seat and a second mounting seat protruding in the radial direction of the housing, the protruding 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 received in the first installation space and a second bushing received in the second installation space, the first bushing is provided with a first center hole, the second bushing is provided with a second center hole, and the pivot shaft passes through the first center hole and the second center hole.

12. The waterproof valve according to claim 11, characterized in that: The waterproof valve is also provided with a shielding cover fixed to the second mounting seat to shield the second bushing.

13. The waterproof valve according to claim 11, characterized in that: The first mounting seat 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 matching with the limiting protrusion, and the driving part is configured to directly or indirectly match with a driving device, and the driving device is used to drive the driving 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 shell 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 shell, and the flange portion elastically abuts and seals with the abutment surface.

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