Waterproof ventilation device and transmission device

Abstract

The utility model relates to a waterproof ventilation device and a transmission device. The waterproof ventilation device comprises a ventilation plug base body, and the ventilation plug base body is internally provided with a pressure discharge oil channel and a pressure relief hole communicating with the pressure discharge oil channel; the positioning cover is connected with the ventilation plug base body, a containing groove is formed in the surface of the side, close to the ventilation plug base body, of the positioning cover, and the containing groove is communicated with the pressure relief hole; the floating air bag is movably arranged in the accommodating groove; according to the waterproof ventilation device, the floating air bag is arranged between the positioning cover and the ventilation plug base body, when the waterproof ventilation device does not wade into water, the floating air bag is located at the first position, and the gap between the floating air bag and the containing groove communicates with the pressure relief hole to form a pressure relief channel; when the waterproof ventilation device wades into water and the floating air bag is located at the second position, at least one position of the floating air bag is attached to the containing groove to block the pressure relief channel, so that the effective waterproof ventilation effect is achieved, and the waterproof ventilation device is simple, easy to assemble and capable of effectively saving cost.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a waterproof and ventilated device and a transmission device. Background Technology

[0002] With the rapid development of the automotive industry, customers are increasingly demanding that vehicles adapt to various extreme operating environments, especially in terms of performance requirements under conditions of heavy rainfall or wading. For example, modern users expect their vehicles to have stronger wading capabilities and be protected against damage caused by water accumulation during heavy rainfall.

[0003] To address these issues, traditional solutions typically focus on extending the venting lines of the transmission box or using costly "gas-through, oil-through" filter membrane devices.

[0004] However, each of these methods has significant limitations. While extending the venting line can improve a vehicle's waterproofing to some extent, this approach is not only costly overall but also requires additional valuable interior space, increasing assembly difficulty and complexity. On the other hand, the "gas-only" filter membrane technology, although providing an effective means of waterproofing and ventilation, is expensive and its ventilation performance needs improvement. Therefore, neither of the existing solutions can simultaneously meet the comprehensive requirements of low cost, ease of installation, and efficient waterproofing and ventilation. Summary of the Invention

[0005] The purpose of this application is to provide a waterproof and ventilated device and a transmission device to solve the problems of high cost, complex assembly, and poor ventilation effect of the prior art.

[0006] This application provides a waterproof and breathable device, comprising:

[0007] The breather plug base has a pressure relief oil passage inside and a pressure relief hole communicating with the pressure relief oil passage on the breather plug base.

[0008] A positioning cover is connected to the vent plug base. The surface of the positioning cover near the vent plug base is provided with a receiving groove, which is connected to the pressure relief hole.

[0009] The floating airbag is movably disposed within the receiving groove. When the floating airbag is in the first position, the gap between the floating airbag and the receiving groove is connected to the pressure relief hole, forming a pressure relief channel. When the floating airbag is in the second position, at least one position of the floating airbag is in contact with the receiving groove to block the pressure relief channel.

[0010] In one embodiment, the receiving grooves are provided with multiple recesses, and the floating airbag is provided with multiple protrusions, which are embedded one-to-one into the multiple receiving grooves.

[0011] In one embodiment, at least one first sealing point is provided in the receiving groove; a second sealing point corresponding to the first sealing point is provided on the surface of the protrusion.

[0012] When the floating airbag is in the first position, there is a gap between the first sealing point and the second sealing point; when the floating airbag is in the second position, the first sealing point and the second sealing point are in contact.

[0013] In one embodiment, at least one third sealing point is provided between any two adjacent receiving grooves, and a fourth sealing point corresponding to the third sealing point is provided between any two adjacent protrusions;

[0014] When the floating airbag is in the first position, there is a gap between the third sealing point and the fourth sealing point;

[0015] When the floating airbag is in the second position, the third sealing point is in contact with the fourth sealing point.

[0016] In one embodiment, the receiving groove is annular and centered on the vent plug substrate.

[0017] In one embodiment, the waterproof and ventilated device further includes:

[0018] A sliding sealing block is disposed between the floating airbag and the vent plug base to seal the gap between the floating airbag and the vent plug base. The floating airbag is connected to the sliding sealing block to drive the sliding sealing block to move axially along the vent plug base.

[0019] In one embodiment, a first thread is provided on the upper part of the vent plug base;

[0020] The center of the positioning cover is provided with a second thread;

[0021] The vent plug body and the positioning cap are connected by a first thread and a second thread.

[0022] In one embodiment, the lower part of the vent plug base is provided with a third thread for connecting with the transmission housing.

[0023] In one embodiment, a sealing ring is provided on the end of the third thread near the positioning cover to seal the vent plug base and the transmission housing.

[0024] This application also provides a transmission device, including a transmission box and a waterproof and ventilated device of any of the above, wherein the vent plug base of the waterproof and ventilated device is connected to the housing of the transmission box.

[0025] The advantages of this application compared to the prior art are:

[0026] This application achieves effective waterproof and ventilated performance by placing a floating airbag between the positioning cover and the vent plug base. When the waterproof and ventilated device is not submerged in water, the floating airbag is in the first position, and the gap between the floating airbag and the receiving groove is connected to the pressure relief hole to form a pressure relief channel. When the waterproof and ventilated device is submerged in water, the floating airbag is in the second position, and at least one position of the floating airbag is in contact with the receiving groove, blocking the pressure relief channel. Furthermore, this device is simple, easy to assemble, and can effectively save costs. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a waterproof and ventilated device according to an embodiment of this application;

[0029] Figure 2 This is a schematic diagram illustrating the ventilation principle of a waterproof and ventilated device according to an embodiment of this application;

[0030] Figure 3 This is a schematic diagram illustrating the waterproof working principle of a waterproof and ventilated device according to an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the positioning cover structure shown in one embodiment of this application;

[0032] Figure 5 This is a schematic diagram of a floating airbag structure according to an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of a vent plug substrate shown in one embodiment of this application;

[0034] Figure 7 This is a schematic diagram illustrating the assembly steps of a waterproof and ventilated device according to an embodiment of this application.

[0035] The above figures include the following reference numerals:

[0036] 1-Vent plug base; 2-Positioning cap; 3-Floating airbag; 4-Pressure relief hole; 5-Pressure discharge oil passage; 6-Accommodation groove; 7-Pressure relief channel; 8-First position; 9-Second position; 10-Side wall; 11-Protrusion; 12-First sealing point; 13-Second sealing point; 14-Third sealing point; 15-Fourth sealing point; 16-Sliding sealing block; 17-Positioning surface; 18-First thread; 19-Second thread; 20-Third thread; 21-Sealing ring. Detailed Implementation

[0037] The terms “first,” “second,” “third,” etc., are used only for distinguishing descriptions and do not indicate a sequence number, nor should they be interpreted as indicating or implying relative importance.

[0038] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of this application, it should be noted that the terms "inner", "outer", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] In the description of this application, unless otherwise expressly specified and limited, the terms “set up,” “install,” “connect,” and “link” shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0041] This application provides a waterproof and breathable device. Figure 1 This is a schematic diagram of a waterproof and ventilated device according to an embodiment of this application. Figure 2 This is a schematic diagram illustrating the ventilation principle of a waterproof and ventilated device according to an embodiment of this application. Figure 3 This is a schematic diagram illustrating the waterproof working principle of a waterproof and ventilated device according to an embodiment of this application, as shown below. Figure 1-3 As shown, the waterproof and ventilated device includes: a vent plug base 1, a positioning cover 2, and a floating airbag 3. The vent plug base 1 has a pressure discharge channel 5 and a pressure relief hole 4 inside, which are connected. The positioning cover 2 is connected to the vent plug base 1, and the surface of the positioning cover 2 near the vent plug base 1 has a receiving groove 6, which is connected to the pressure relief hole 4. The pressure discharge channel 5, the pressure relief hole 4, and the receiving groove 6 are sequentially connected to form an exhaust channel. The floating airbag 3 is movably disposed within the receiving groove 6. The floating airbag 3 is made of a relatively lightweight plastic material, with a stable outer frame structure and a hollow interior.

[0042] Specifically, when the waterproof ventilator is not submerged in water, the floating airbag 3 is in the first position 8 due to gravity. At this time, the bottom of the floating airbag 3 will naturally droop down and fit against the positioning surface 17 of the vent plug base 1, so that the gap formed between the floating airbag 3 and the receiving groove 6 is connected to the pressure relief hole 4, forming a pressure relief channel 7. The internal gas is discharged from the waterproof ventilator through the pressure relief oil passage 5, the pressure relief hole 4 and the pressure relief channel 7 in sequence, smoothly releasing the pressure to the outside (the gas direction is...). Figure 2 (Direction indicated by the middle arrow).

[0043] When the waterproof and ventilated device is submerged in water, the buoyancy of the water gradually acts on the floating airbag 3. Figure 3 The direction indicated by the middle arrow represents the direction of buoyancy. The buoyancy of the water gradually overcomes the weight of the floating airbag 3 and the downward force within the waterproof venting device, thus pushing the floating airbag 3 upwards. At this point, the floating airbag 3 is in the second position 9. At least one position of the floating airbag 3 is in contact with the receiving groove 6, partially blocking the pressure relief channel 7. External liquid cannot enter the waterproof venting device through the pressure relief channel 7, thus achieving a waterproof effect. At this time, the gas inside the device passes sequentially through the pressure relief oil channel 5, the pressure relief hole 4, and another unblocked pressure relief channel 7, returning to the pressure relief hole 4 at the blocked pressure relief channel 7 (the gas direction is...). Figure 3 (The arrows indicate the direction of the pressure relief passage 5, pressure relief hole 4, and unblocked pressure relief channel 7).

[0044] Furthermore, the pressure relief oil passage 5 extends axially inside the vent plug base 1, and there are multiple pressure relief holes 4, which are evenly distributed radially inside the vent plug base 1. The pressure relief oil passage 5 communicates with the multiple pressure relief holes 4. The positioning cover 2 is perpendicularly connected to the vent plug base 1, and the radial surface of the positioning cover 2 near the vent plug base 1 is provided with a receiving groove 6. The floating airbag 3 can be slidably disposed in the receiving groove 6 along the axial direction.

[0045] Furthermore, since the floating airbag 3 is set in the receiving groove 6, the side wall 10 of the positioning plate wraps around the floating airbag 3, and the height of the side wall 10 of the positioning plate is higher than the height of the floating airbag 3. When water directly impacts the waterproof ventilation device, it can effectively prevent water from directly impacting the exhaust channel under such working conditions.

[0046] This application provides a movable floating airbag 3 inside the positioning cover 2. When the gap between the receiving groove 6 and the floating airbag 3 is connected to the pressure relief hole 4, the gas inside the waterproof ventilation device can be smoothly discharged to the outside. When the waterproof ventilation device is submerged in water, due to the water pressure, at least one position between the receiving groove 6 and the floating airbag 3 will be in contact, and the pressure relief channel 7 will be closed, preventing water from entering the waterproof ventilation device, thus achieving the effect of waterproof ventilation. Furthermore, this device has a simple structure, is easy to assemble, and has a low cost.

[0047] In one embodiment, Figure 4 This is a schematic diagram of the positioning cover structure according to an embodiment of this application. Figure 5 This is a schematic diagram of a floating airbag structure according to an embodiment of this application, as shown below. Figure 2-5 As shown, the positioning cover 2 has multiple receiving grooves 6, and the floating airbag 3 has multiple protrusions 11. The positioning cover 2, receiving grooves 6, floating airbag 3, and protrusions 11 are all annular structures. At least one first sealing point 12 is provided within the receiving groove 6; the surface of the protrusion 11 is provided with a second sealing point 13 corresponding to the first sealing point 12. When the floating airbag 3 is in the first position 8 (i.e., when the waterproof ventilator is not submerged), there is a gap between the first sealing point 12 and the second sealing point 13, allowing the gas inside the waterproof ventilator to be smoothly discharged through the pressure relief channel 7. When the floating airbag 3 is in the second position 9 (i.e., when the waterproof ventilator is submerged), the first sealing point 12 and the second sealing point 13 are in contact, blocking the pressure relief channel 7, preventing water from entering the waterproof ventilator.

[0048] Furthermore, at least one third sealing point 14 is provided between any two adjacent receiving grooves 6, and a fourth sealing point 15 corresponding to the third sealing point 14 is provided between any two adjacent protrusions 11; when the floating airbag 3 is in the first position 8 (i.e., when the waterproof ventilator is not submerged in water), there is a gap between the third sealing point 14 and the fourth sealing point 15, and the gas inside the waterproof ventilator can be smoothly discharged from the pressure relief channel 7; when the floating airbag 3 is in the second position 9, the third sealing point 14 and the fourth sealing point 15 are in contact, the pressure relief channel 7 is blocked, so that water cannot enter the interior of the waterproof ventilator, thereby effectively achieving the effect of waterproof ventilation;

[0049] In this configuration, the first sealing point 12 is concave, the second sealing point 13 is convex, the third sealing point 14 is concave, and the fourth sealing point 15 is convex. Alternatively, the first sealing point 12 is convex, the second sealing point 13 is concave, the third sealing point 14 is convex, and the fourth sealing point 15 is concave. All four sealing points—first, second, third, and fourth—can achieve a sealing effect with a certain degree of deformation.

[0050] In one embodiment, Figure 6 This is a schematic diagram of the vent plug substrate 1 shown in one embodiment of this application, as follows: Figure 1 , Figure 4 and Figure 6As shown, the upper part of the vent plug base 1 is provided with a first thread 18, and the center of the positioning cover 2 is provided with a second thread 19; the vent plug base 1 and the positioning cover 2 are connected by tightening the first thread 18 and the second thread 19, thereby limiting the axial positioning distance between the vent plug base 1 and the positioning cover 2; wherein, the positioning cover 2 is made of metal; when the positioning cover 2 is a flange, it is a conventional external hexagonal tightening structure.

[0051] Furthermore, a third thread 20 is provided at the lower part of the vent plug base 1 for connecting with the transmission housing. A sealing ring 21 is provided on the end of the third thread 20 near the positioning cover 2 for sealing the vent plug base 1 and the transmission housing. The sealing ring 21 is an O-ring 21.

[0052] In one embodiment, such as Figure 1 , Figure 4-6 As shown, the waterproof and ventilated device also includes: a sliding sealing block 16; the sliding sealing block 16 is disposed between the floating airbag 3 and the vent plug base 1, and is used to seal the gap between the floating airbag 3 and the vent plug base 1. The floating airbag 3 is connected to the sliding sealing block 16, and is used to drive the sliding sealing block 16 to move axially along the vent plug base 1 while ensuring sealing.

[0053] The pressure relief hole 4 is radially disposed in the middle of the vent plug base 1 (between the first thread 18 and the third thread 20 of the vent plug base 1) and connected to the pressure relief oil passage 5; the sliding sealing block 16 is disposed between the positioning surface 17 of the vent plug base 1 and the pressure relief hole 4. When the sliding sealing block 16 moves axially with the floating airbag 3 at the first position 8 and the second position 9, the sliding sealing block 16 moves axially between the positioning surface 17 and the pressure relief hole 4.

[0054] In one embodiment, Figure 7 This is a schematic diagram illustrating the assembly steps of a waterproof and ventilated device according to an embodiment of this application, as shown below. Figure 7 As shown, the specific assembly steps for the waterproof and ventilated device are as follows:

[0055] Step S710: Install the O-ring 21 on the end of the third thread 20 of the vent plug base 1 near the positioning cover 2;

[0056] Step S720: Place the floating airbag 3 and the sliding sealing block 16 onto the positioning surface 17 of the vent plug base 1;

[0057] Step S730: Install the positioning cover 2 on the vent plug base 1, and tighten the first thread 18 and the second thread 19 to make the positioning cover 2 and the vent plug base 1 tighten together.

[0058] Step S740: Verify the airtightness of the gas channel to ensure that the pressure condition meets the requirements;

[0059] Step S750: Simulate applying a force below the floating airbag 3 to push the floating airbag 3 to make axial displacement and check the sealing effect.

[0060] This application also provides a transmission device, including a transmission box and a waterproof and ventilated device of any of the above. The vent plug base 1 of the waterproof and ventilated device is connected to the housing of the transmission box, and the transmission box achieves the effect of waterproofing and ventilation through the waterproof and ventilated device.

[0061] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other. The above are merely preferred embodiments of this application and are not intended to limit this application. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A waterproof venting device, characterized by, It comprises: a breather plug base with a pressure discharge channel inside, and a pressure release hole communicating with the pressure discharge channel; a positioning cover connected with the breather plug base, and a containing groove provided on the surface of the side of the positioning cover close to the breather plug base, the containing groove communicating with the pressure release hole; a floating air bag movably arranged in the containing groove, when the floating air bag is in a first position, the gap between the floating air bag and the containing groove communicates with the pressure release hole to form a pressure release channel, and when the floating air bag is in a second position, at least one position of the floating air bag is in close contact with the containing groove to block the pressure release channel.

2. The waterproof vent device of claim 1, wherein, The containing groove is provided with a plurality of containing grooves, and the floating air bag is provided with a plurality of protruding parts, and the plurality of protruding parts are embedded in the plurality of containing grooves one by one.

3. The waterproof vent device of claim 2, wherein, The containing groove is provided with at least one first sealing point, and the surface of the protruding part is provided with a second sealing point corresponding to the first sealing point. When the floating air bag is in the first position, there is a gap between the first sealing point and the second sealing point, and when the floating air bag is in the second position, the first sealing point is in close contact with the second sealing point.

4. The waterproof vent of claim 2, wherein, At least one third sealing point is arranged between any two adjacent containing grooves, and a fourth sealing point corresponding to the third sealing point is arranged between any two adjacent protruding parts. When the floating air bag is in the first position, there is a gap between the third sealing point and the fourth sealing point, and when the floating air bag is in the second position, the third sealing point is in close contact with the fourth sealing point.

5. The waterproof vent of claim 1, wherein, The containing groove is annular and centered on the breather plug base.

6. The waterproof vent of claim 1, wherein, It also comprises: a sliding sealing block arranged between the floating air bag and the breather plug base, for sealing the gap between the floating air bag and the breather plug base, the floating air bag being connected with the sliding sealing block for driving the sliding sealing block to move along the axial direction of the breather plug base.

7. The waterproof breather device according to claim 1, wherein a first thread is arranged on the upper part of the breather plug base; a second thread is arranged at the center of the positioning cover; the breather plug base and the positioning cover are connected through the first thread and the second thread.

8. The waterproof breather device according to claim 7, wherein a third thread is arranged on the lower part of the breather plug base for cooperating with the transmission case shell.

9. The waterproof breather device according to claim 8, wherein a sealing ring is arranged on the end of the side of the third thread close to the positioning cover, for sealing the breather plug base and the transmission case shell.

10. A transmission characterized by, It comprises a transmission case and the waterproof breather device according to any one of claims 1 to 9, and the breather plug base of the waterproof breather device is connected with the shell of the transmission case.

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