Ventilation valve, transmission and vehicle

Abstract

The utility model provides a ventilation valve, a transmission and a vehicle, and relates to the technical field of ventilation valves. The ventilation valve comprises a valve body, a waterproof ventilation film, an oil absorption piece and an extrusion piece. A ventilation cavity is formed in the valve body, and an air inlet and an air outlet are formed in the inner surface of the ventilation cavity. The waterproof breathable film is arranged at the air outlet hole to seal the air outlet hole; the oil absorption piece is made of an elastic material, is arranged in the ventilation cavity and is positioned between the waterproof breathable film and the air inlet hole; the extrusion part comprises an elastic part and an extrusion part, the extrusion part abuts against the oil suction part, the elastic part is arranged between the extrusion part and the valve body, and elastic force facing the oil suction part is applied to the extrusion part, so that the extrusion part and the valve body jointly compress the oil suction part. The ventilation valve is used for ventilation, and the ventilation efficiency can be improved.

Description

Technical Field

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

[0002] The vent valve is located at the vent of the equipment. The vent valve has a waterproof and breathable membrane. On the one hand, the waterproof and breathable membrane allows the gas inside the equipment to be discharged to the outside of the equipment through the vent valve. On the other hand, it makes it difficult for water outside the equipment to enter the equipment through the vent valve, thus achieving the effect of waterproofing and breathability.

[0003] In related technologies, the air permeability of vent valves is relatively low. Utility Model Content

[0004] This application provides a vent valve, a transmission, and a vehicle that can improve venting efficiency.

[0005] In a first aspect, this application provides a vent valve, which includes a valve body, a waterproof and breathable membrane, an oil-absorbing component, and a squeezing component. The valve body has a venting cavity, and the inner surface of the venting cavity has an air inlet and an air outlet. The waterproof and breathable membrane is disposed at the air outlet, sealing the air outlet. The oil-absorbing component is made of an elastic material and is disposed in the venting cavity, located between the waterproof and breathable membrane and the air inlet. The squeezing component includes an elastic part and a squeezing part, the squeezing part abutting against the oil-absorbing component, and the elastic part being disposed between the squeezing part and the valve body. An elastic force is applied to the squeezing part toward the oil-absorbing component, so that the squeezing part and the valve body jointly compress the oil-absorbing component.

[0006] The vent valve provided in this application includes a pressing element, which comprises an elastic part and a pressing part. The elastic part applies an elastic force toward the oil-absorbing part to the pressing part, causing the pressing part and the valve body to jointly compress the oil-absorbing part. Vibrations generated during equipment operation cause the elastic part to elastically expand and contract. During this expansion and contraction, the pressing part compresses and releases the oil-absorbing part, squeezing out the oil absorbed by the oil-absorbing part. After the oil absorbed by the oil-absorbing part is squeezed out, on the one hand, the obstruction encountered by the gas passing through the oil-absorbing part is reduced, which helps to increase the gas flow rate and thus improve the venting efficiency; on the other hand, the oil absorption efficiency of the oil-absorbing part is improved, which helps to reduce oil accumulation at the waterproof and breathable membrane, thereby improving the venting efficiency. Therefore, the vent valve provided in this application, under the action of the pressing part, allows the oil inside the oil-absorbing part to be smoothly discharged, which helps to improve the venting efficiency of the vent valve.

[0007] In conjunction with the first aspect, in some possible implementations, the oil-absorbing component divides the venting chamber to form a first venting sub-chamber and a second venting sub-chamber, with an air inlet and an air outlet located in the first venting sub-chamber and the second venting sub-chamber, respectively; the extrusion component is disposed in the first venting sub-chamber, and the elastic force is directed from the oil-absorbing component to the second venting sub-chamber.

[0008] In this way, the oil-absorbing component divides the venting chamber, forming a first venting sub-chamber and a second venting sub-chamber. The air inlet and air outlet are located in the first venting sub-chamber and the second venting sub-chamber, respectively. This requires the gas to first enter one of the first venting sub-chamber and the second venting sub-chamber through the air inlet, then pass through the oil-absorbing component into the other of the first venting sub-chamber and the second venting sub-chamber, and finally exit the venting chamber through the air outlet. This allows the gas to fully contact the oil-absorbing component, enabling the oil-absorbing component to fully absorb the oil, thereby helping to reduce oil accumulation at the waterproof and breathable membrane. The extrusion member is disposed in the first ventilated sub-cavity, and the elastic force is directed from the oil-absorbing member to the second ventilated sub-cavity. This ensures that during the compression and release of the oil-absorbing member by the extrusion section, the length of the oil-absorbing member is less likely to change significantly in the direction perpendicular to the arrangement direction of the first and second ventilated sub-cavities. Consequently, the oil-absorbing member is less likely to form a gap with the inner surface of the ventilated cavity, making it difficult for gas to move through the gap between the oil-absorbing member and the inner surface of the ventilated cavity to the waterproof and breathable membrane. This allows the gas to fully contact the oil-absorbing member, enabling it to fully absorb oil and thus reducing oil accumulation at the waterproof and breathable membrane.

[0009] In combination with the first aspect and the above implementation, in some possible implementations, the elastic part is a spring, and a protrusion is formed on the inner surface of the first vent cavity, with the spring sleeved on the protrusion.

[0010] By fitting the spring onto the protruding post, the stability of the spring installation can be improved.

[0011] In conjunction with the first aspect and the above-described implementations, in some possible implementations, the air inlet includes a first portion and a second portion. The first portion is formed on the protrusion and extends along the extension direction of the protrusion, and a first end of the first portion communicates with the ventilation cavity; one end of the second portion communicates with the external space of the ventilation cavity, and the other end communicates with the second end of the first portion, with the second end of the first portion located on the side of the end face of the first end away from the protrusion.

[0012] In this way, the protruding post is not only used to install the spring, but also to form the first hole, making full use of the post and improving the compactness of the structure. The first hole extends along the extension direction of the protruding post, making full use of the length of the protruding post in the extension direction, which is beneficial to the compactness of the structure. The first hole communicates with the external space of the air chamber through the second hole. Gas can enter the second hole through one end away from the first hole, and then enter the first hole through the other end of the second hole. After entering the first hole, the gas moves a certain distance along the extension direction of the first hole before entering the venting chamber. During the movement, the inner wall of the first hole comes into contact with the gas, which can cool the gas and condense the gaseous oil carried by the gas, making it easier for the oil-absorbing component to absorb and reducing oil accumulation at the waterproof and breathable membrane.

[0013] In combination with the first aspect and the above-described implementation, in some possible implementations, the first end of the first hole has an opening located on the end face of the protrusion.

[0014] By positioning the opening at the first end of the first hole at the end face of the protrusion, the second hole is made longer in the direction of the protrusion's extension. This facilitates full contact between the inner wall of the first hole and the gas, thereby effectively cooling the gas.

[0015] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the second hole includes a damping hole section, the cross-sectional area of ​​which is smaller than the cross-sectional area of ​​the first hole.

[0016] By making the cross-sectional area of ​​the damping orifice section smaller than that of the first orifice section, the process of oil passing through the damping section is more easily hindered, making it less likely for oil to enter the venting cavity, which helps to reduce oil accumulation at the waterproof and breathable membrane.

[0017] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the oil-absorbing component and the waterproof and breathable membrane are arranged opposite to each other; the breathable valve also includes a separator, and along the direction in which the oil-absorbing component and the waterproof and breathable membrane are arranged opposite to each other, the surfaces of the opposite sides of the separator abut against the oil-absorbing component and the waterproof and breathable membrane respectively.

[0018] In this way, the separator separates the oil-absorbing component from the waterproof and breathable membrane, which helps to reduce the contamination of the waterproof and breathable membrane by the oil accumulated at the oil-absorbing component.

[0019] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the separator is fixedly connected to the valve body, the extrusion part is located on the side of the oil suction part away from the separator, and the elastic force is directed from the extrusion part to the separator.

[0020] The separator not only separates the oil-absorbing component from the waterproof and breathable membrane, but also works with the extrusion section to compress the oil-absorbing component. The extrusion section is fully utilized, which helps to improve the compactness of the structure.

[0021] Secondly, this application provides a transmission, which includes a housing, a transmission mechanism, and a vent valve provided in the first aspect of this application and the above-described implementation. The housing has a receiving cavity, and the inner surface of the receiving cavity has a mounting hole that connects the external space of the receiving cavity with the receiving cavity. The transmission mechanism is disposed in the receiving cavity, and the vent valve is disposed in the mounting hole.

[0022] The transmission provided in this application, including the vent valve provided in the first aspect of this application and the above-described implementation, can achieve the same effect, namely, improve ventilation efficiency.

[0023] Thirdly, this application provides a vehicle that includes the transmission provided in the second aspect of this application, and / or the vent valve provided in the first aspect of this application and the above-described implementation.

[0024] The vehicle provided in this application, including the transmission provided in the second aspect of this application, and / or the vent valve provided in the first aspect of this application and the above-described implementation, can achieve the same effect, namely, improve ventilating efficiency. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the vent valve in the embodiments of this application;

[0027] Figure 2 yes Figure 1 Cross-sectional view at point AA;

[0028] Figure 3 This is one of the exploded views of the vent valve in the embodiments of this application;

[0029] Figure 4 yes Figure 3 Cross-sectional view at point BB;

[0030] Figure 5 This is the second exploded view of the vent valve in the embodiments of this application;

[0031] Figure 6 This is the third exploded view of the vent valve in the embodiments of this application;

[0032] Figure 7 This is one of the structural schematic diagrams of the separator in the embodiments of this application;

[0033] Figure 8 This is the second schematic diagram of the structure of the separator in the embodiments of this application.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Valve body; 11. Vent chamber; 111. First vent sub-chamber; 1112. Protruding post; 112. Second vent sub-chamber; 12. Air inlet; 121. First hole; 122. Second hole; 1221. Damping hole section; 13. Air outlet; 14. External thread; 15. Second locking block; 2. Waterproof and breathable membrane; 3. Oil-absorbing component; 4. Extrusion component; 41. Elastic part; 42. Extrusion part; 5. Valve cover; 51. Cover plate; 52. Flanged edge; 53. Connecting arm; 531. First locking block; 6. Separator; 61. Vent chamber; 62. First support column; 63. Second support column; 7. Sealing ring. Detailed Implementation

[0036] The technical solutions in this application will now be described clearly and in detail with reference to the accompanying drawings.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0040] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0041] The vent valve is installed at the mounting hole of the equipment. The vent valve has a waterproof and breathable membrane. On the one hand, the waterproof and breathable membrane allows the gas inside the equipment to be discharged to the outside of the equipment through the vent valve. On the other hand, it makes it difficult for water outside the equipment to enter the equipment through the vent valve, thus achieving the effect of waterproofing and breathability.

[0042] In related technologies, the air permeability of vent valves is relatively low.

[0043] The following analysis addresses the reasons for the low air permeability of the breather valve in related technologies:

[0044] The gas inside the equipment often carries oil, which is often unable to pass through the waterproof and breathable membrane. As the gas passes through, the oil it carries tends to accumulate on the membrane, causing blockage and reducing ventilation efficiency. Therefore, ventilation valves often include an oil-absorbing component. This component absorbs the oil carried by the gas, allowing it to pass through the component before passing through the membrane, thus reducing oil accumulation and improving ventilation efficiency.

[0045] However, the oil-absorbing element easily reaches saturation. Once saturated, a significant amount of oil accumulates on it, hindering gas flow and reducing air permeability. Furthermore, the reduced oil absorption efficiency after saturation results in higher oil content in the gas at the waterproof and breathable membrane, leading to oil buildup and clogging, further reducing breathability.

[0046] In related technologies, once the oil suction component reaches saturation, the oil inside is difficult to discharge, resulting in low air permeability of the vent valve.

[0047] This application provides a vehicle, which can be of various types, such as a sedan, off-road vehicle, or sport utility vehicle (SUV).

[0048] The vehicle provided in this application embodiment includes a transmission, which includes a housing, a transmission mechanism, and a vent valve. The housing has a receiving cavity, and the inner surface of the receiving cavity has a mounting hole that connects the external space of the receiving cavity to the receiving cavity; the transmission mechanism is disposed within the receiving cavity; and the vent valve is disposed in the mounting hole.

[0049] In this embodiment of the application, at least one of the engine output shaft and the motor output shaft is connected to the axle via a transmission mechanism to drive the axle to rotate relative to the vehicle body.

[0050] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The vent valve provided in this application includes a valve body 1, a waterproof and breathable membrane 2, an oil-absorbing component 3, and a compression component 4. The valve body 1 forms a venting cavity 11, and the inner surface of the venting cavity 11 forms an air inlet 12 and an air outlet 13; the waterproof and breathable membrane 2 is disposed at the air outlet 13, sealing the air outlet 13; the oil-absorbing component 3 is made of an elastic material, and is disposed in the venting cavity 11, located between the waterproof and breathable membrane 2 and the air inlet 12; the compression component 4 includes an elastic part 41 and a compression part 42, the compression part 42 abuts against the oil-absorbing component 3, the elastic part 41 is disposed between the compression part 42 and the valve body 1, and applies an elastic force toward the oil-absorbing component 3 to the compression part 42, so that the compression part 42 and the valve body 1 jointly compress the oil-absorbing component 3.

[0051] In this structural form, the vent valve includes a squeezing member 4, which comprises an elastic part 41 and a squeezing part 42. The elastic part 41 applies an elastic force toward the oil-absorbing member 3 to the squeezing part 42, causing the squeezing part 42 and the valve body 1 to jointly compress the oil-absorbing member 3. During vehicle operation, the vehicle's bumps can cause the vent valve to vibrate. This vibration causes the elastic part 41 to elastically expand and contract. During this expansion and contraction, the squeezing part 42 compresses and releases the oil-absorbing member 3, squeezing out the oil absorbed by the member 3. After the oil absorbed by the member 3 is squeezed out, on the one hand, the obstruction encountered by the gas passing through the member 3 is reduced, which is conducive to increasing the gas flow rate and thus improving the venting efficiency. On the other hand, the oil absorption efficiency of the member 3 is improved, which is conducive to reducing the oil accumulation at the waterproof and breathable membrane 2, thereby improving the venting efficiency. Therefore, the vent valve provided in this application, under the action of the squeezing member 4, allows the oil in the oil-absorbing member 3 to be smoothly discharged, which is beneficial to improving the venting efficiency of the vent valve.

[0052] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 It is understood that, in this embodiment of the application, both the air inlet 12 and the air outlet 13 are connected to the external space of the ventilation cavity 11 and the ventilation cavity 11. Gas can enter the ventilation cavity 11 through the air inlet 12 and can be discharged from the ventilation cavity 11 through the air outlet 13.

[0053] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the air inlet 12 and the air outlet 13 are arranged opposite to each other. This facilitates the processing and manufacturing of the valve body 1.

[0054] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4In some embodiments of this application, the waterproof and breathable membrane 2 is disposed on the side of the vent 13 away from the vent cavity. This facilitates the assembly of the waterproof and breathable membrane 2 with the valve body 1. In some embodiments of this application, the waterproof and breathable membrane 2 is welded to the valve body 1. This ensures a more stable connection between the waterproof and breathable membrane 2 and the valve body 1.

[0055] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 It is understood that in this embodiment of the application, the mounting hole is used to install the vent valve. The mounting hole connects the external space of the receiving cavity with the receiving cavity. The vent valve is set in the mounting hole so that the venting cavity 11 is connected with the receiving cavity. The gas in the receiving cavity can enter the venting cavity 11 through the air inlet 12 and be discharged to the external environment of the transmission through the air outlet 13.

[0056] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the valve body 1 is threaded into the mounting hole. This ensures a more secure connection between the vent valve and the outer casing. In some embodiments of this application, the inner surface of the mounting hole is bonded to the valve body 1 with sealant. This further enhances the stability of the connection between the vent valve and the outer casing and also improves the sealing performance of the mounting hole.

[0057] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the transmission further includes a sealing ring 7, which is located outside the housing and surrounds the mounting hole. Along the depth direction of the mounting hole, the sealing ring 7 is supported between the end face of the mounting hole and the valve body 1. This improves the sealing performance of the mounting hole. In some embodiments of this application, the valve body 1 has a sealing groove, and the sealing ring 7 is embedded in the sealing groove. This improves the stability of the sealing groove installation.

[0058] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, the oil-absorbing component 3 is located between the waterproof and breathable membrane 2 and the air inlet 12, that is, the oil-absorbing component 3 is located upstream of the waterproof and breathable membrane 2. After the gas enters the ventilation chamber 11 through the air inlet 12, it first passes through the oil-absorbing component 3 and then moves to the waterproof and breathable membrane 2.

[0059] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4In this embodiment, when the vehicle is bumpy, the elastic part 41 undergoes elastic deformation, causing the force exerted by the squeezing part 42 on the oil-absorbing member 3 to change. When the force increases, the squeezing part 42 moves closer to the oil-absorbing member 3, compressing the oil-absorbing member 3 and squeezing out the oil inside. When the force decreases, the squeezing part 42 moves away from the oil-absorbing member 3, causing the oil-absorbing member 3 to elastically recover and be able to absorb oil again.

[0060] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment of the application, the material of the oil-absorbing component 3 can be various, for example, it can be sponge, natural cotton or porous polypropylene, etc.

[0061] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the elastic part 41 and the squeezing part 42 can be fixedly connected. This makes the connection between the elastic part 41 and the squeezing part 42 more stable, allowing the elastic part 41 to reliably apply elastic force to the squeezing part 42. Furthermore, the fixed connection between the elastic part 41 and the squeezing part 42 enables the elastic part 41 to not only move the squeezing part 42 closer to the oil-absorbing member 3, but also to move the squeezing part 42 away from the oil-absorbing member 3. This movement of the squeezing part 41 away from the oil-absorbing member 3 reduces the force between the squeezing part 42 and the oil-absorbing member 3, thus minimizing the force that the oil-absorbing member 3 needs to overcome during its elastic recovery process.

[0062] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment of the application, the fixed connection between the elastic part 41 and the extrusion part 42 can be implemented in various ways. For example, it can be riveting, welding, bonding, fastener connection or integral molding, etc.

[0063] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the oil-absorbing member 3 and the squeezing part 42 are arranged vertically, with the squeezing part 42 disposed below the oil-absorbing member 3, and the elastic force can be parallel to the vertical direction. Thus, when the upward elastic force exerted by the elastic part 41 on the squeezing part 42 decreases, the squeezing part 42 can move away from the oil-absorbing member 3 under the influence of gravity, resulting in a smaller force between the squeezing part 42 and the oil-absorbing member 3. This helps to reduce the force that needs to be overcome during the elastic recovery process of the oil-absorbing member 3.

[0064] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the extrusion part 42 is an extrusion plate, and the oil-absorbing member 3 is disposed on one side of the extrusion plate in the thickness direction, with the elastic force parallel to the thickness direction of the extrusion plate. In this way, the processing and manufacturing of the extrusion part 42 is relatively simple and the cost is low, and it is also beneficial to have a larger contact area between the oil-absorbing member 3 and the extrusion part 42, which is beneficial to make the abutment between the oil-absorbing member 3 and the extrusion part 42 more stable.

[0065] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In this embodiment, the elastic member may be in a stretched state to apply an elastic force toward the oil-absorbing member 3 to the extrusion part 42, so that the extrusion part 42 and the valve body 1 jointly compress the oil-absorbing member 3. The elastic member may also be in a compressed state to apply an elastic force toward the oil-absorbing member 3 to the extrusion part 42, so that the extrusion part 42 and the valve body 1 jointly compress the oil-absorbing member 3.

[0066] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the vent 13 is located above the oil suction member 3, and the oil suction member 3 is located above the air inlet 12. This allows the oil squeezed out from the oil suction member 3 to fall back to the air inlet 12 under gravity and return to the transmission through the air inlet 12. This prevents oil accumulation in the vent chamber 11 and allows for oil recycling. Furthermore, in some embodiments of this application, the depth direction of the air inlet 12 is vertical. This makes it easier for the oil squeezed out from the oil suction member 3 to flow back to the transmission through the air inlet 12.

[0067] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the oil-absorbing member 3 divides the venting chamber 11 to form a first venting sub-chamber 111 and a second venting sub-chamber 112, with the air inlet 12 and the air outlet 13 located in the first venting sub-chamber 111 and the second venting sub-chamber 112, respectively; the squeezing member 4 is disposed in the first venting sub-chamber 111, and the elastic force is directed from the oil-absorbing member 3 to the second venting sub-chamber 112.

[0068] In this way, the oil-absorbing component 3 divides the venting chamber 11 to form a first venting sub-chamber 111 and a second venting sub-chamber 112. The air inlet 12 and the air outlet 13 are located in the first venting sub-chamber 111 and the second venting sub-chamber 112, respectively. This means that the gas needs to first enter one of the first venting sub-chamber 111 and the second venting sub-chamber 112 through the air inlet 12, then pass through the oil-absorbing component 3 into the other of the first venting sub-chamber 111 and the second venting sub-chamber 112, and then be discharged from the venting chamber 11 through the air outlet 13. This allows the gas to fully contact the oil-absorbing component 3, enabling the oil-absorbing component 3 to fully absorb the oil, thereby helping to reduce the oil accumulation at the waterproof and breathable membrane 2. The extrusion member 4 is disposed in the first ventilated sub-cavity 111, and the elastic force is directed from the oil-absorbing member 3 to the second ventilated sub-cavity 112. During the process of the extrusion part 42 compressing and releasing the oil-absorbing member 3, the length of the oil-absorbing member 3 is not likely to change significantly in the direction perpendicular to the arrangement direction of the first ventilated sub-cavity 111 and the second ventilated sub-cavity 112. As a result, the oil-absorbing member 3 is less likely to form a gap with the inner surface of the ventilated cavity 11, making it difficult for gas to move to the waterproof and breathable membrane 2 through the gap between the oil-absorbing member 3 and the inner surface of the ventilated cavity 11. This allows the gas to fully contact the oil-absorbing member 3, enabling the oil-absorbing member 3 to fully absorb oil, thereby helping to reduce oil accumulation at the waterproof and breathable membrane 2.

[0069] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the elastic part 41 is a spring, and a protrusion 1112 is formed on the inner surface of the first vent cavity 111, with the spring sleeved on the protrusion 1112. By sleeved on the protrusion 1112, the stability of the spring installation is improved.

[0070] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 It should be noted that in the embodiments of this application, the protrusion 1112 is part of the valve body 1. In some embodiments of this application, the valve body 1 can be a one-piece molded structure, such as a one-piece cast structure or a one-piece injection molded structure, which makes the processing and manufacturing of the valve body 1 more convenient.

[0071] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4In some embodiments of this application, the air inlet 12 includes a first hole 121 and a second hole 122. The first hole 121 is formed on the protrusion 1112 and extends along the extension direction of the protrusion 1112. The first end of the first hole 121 communicates with the ventilation cavity 11. One end of the second hole 122 communicates with the external space of the ventilation cavity 11, and the other end communicates with the second end of the first hole 121. The second end of the first hole 121 is located on the side of the end face of the first end away from the protrusion 1112.

[0072] In this way, the protrusion 1112 is not only used to install the spring, but also to form the first hole 121. The protrusion 1112 is fully utilized, which helps to improve the compactness of the structure. The first hole 121 extends along the extension direction of the protrusion 1112, and the length of the protrusion 1112 in the extension direction is fully utilized, which helps to improve the compactness of the structure. The first hole 121 communicates with the external space of the air chamber through the second hole 122. Gas can enter the second hole 122 through one end away from the first hole 121, and then enter the first hole 121 through the other end of the second hole 122. After entering the first hole 121, the gas moves a certain distance along the extension direction of the first hole 121 and then enters the venting chamber 11. During the movement, the inner wall of the first hole 121 comes into contact with the gas, which can cool the gas and condense the gaseous oil carried by the gas, which is convenient for the oil-absorbing component 3 to absorb, and helps to reduce the oil accumulation at the waterproof and breathable membrane 2.

[0073] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the first end of the first hole 121 has an opening located on the end face of the protrusion 1112. By making the opening of the first end of the first hole 121 located on the end face of the protrusion 1112, the second hole 122 is longer in the extending direction of the protrusion 1112, which is beneficial to make the inner wall of the first hole 121 fully contact the gas, thereby fully cooling the gas.

[0074] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 It is understood that in this embodiment of the application, the gas enters the ventilation chamber 11 through the opening at the first end of the first hole 121.

[0075] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4In some embodiments of this application, the depth direction of the first hole 121 is the same as the depth direction of the second hole 122, both being the extension direction of the protrusion 1112. This facilitates the manufacturing of the first hole 121 and the second hole 122. In some embodiments of this application, the first hole 121 and the second hole 122 are coaxial. This also facilitates the manufacturing of the first hole 121 and the second hole 122.

[0076] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the second hole 122 includes a damping hole section 1221, the cross-sectional area of ​​which is smaller than that of the first hole 121. By making the cross-sectional area of ​​the damping hole section 1221 smaller than that of the first hole 121, the process of oil passing through the damping section is more easily hindered, making it less likely for oil to enter the venting cavity 11, which helps to reduce oil accumulation at the waterproof and breathable membrane 2.

[0077] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the vent valve further includes a valve cover 5, which is disposed opposite to the vent hole 13. A ventilation gap is formed between the valve cover 5 and the vent hole 13 along the depth direction of the vent hole 13. In this way, the valve cover 5 blocks the vent hole 13, which has the function of waterproofing and dustproofing, and the gas discharged from the vent hole 13 can be discharged to the external environment of the transmission through the ventilation gap.

[0078] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the valve cover 5 includes a cover plate 51 and a flange 52 disposed on the outer edge of the cover plate 51. The cover plate 51 is disposed opposite to the vent 13. The flange 52 extends toward the valve body 1 along the depth direction of the vent 13. Along the radial direction of the vent 13, the flange 52 is disposed on the side of the valve body 1 away from the vent 13. The flange 52 can extend circumferentially along the vent 13 to form a circumferential structure. In this way, the flange 52 can block the vent 13, and has the function of waterproofing and dustproofing.

[0079] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4In some embodiments of this application, a connecting arm 53 protrudes from the end of the flange 52 away from the cover plate 51 in a direction away from the cover plate 51. A first locking block 531 protrudes from the end of the connecting arm 53 away from the valve cover 5 in a radial direction along the vent hole 13. A second locking block 15 protrudes from the outer surface of the valve body 1 in a radial direction along the vent hole 13. Along the depth direction of the vent hole 13, the surface of the first locking block 531 near the valve cover 5 abuts against the second locking block 15. In this way, the movement of the valve cover 5 away from the valve body 1 is restricted by the abutment between the first locking block 531 and the second locking block 15, which helps to improve the stability of the installation of the valve cover 5 and the valve body 1.

[0080] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, the connecting arm 53 can be integrally formed with the cover plate 51. This makes the manufacturing of the valve cover 5 more convenient.

[0081] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, there are multiple connecting arms 53, each of which has a protruding first locking block 531. The multiple connecting arms 53 are arranged at intervals along the circumference of the air outlet 13. There are multiple second locking blocks 15, and the first locking block 531 and the second locking block 15 are arranged in a one-to-one correspondence. This helps to improve the stability of the valve cover 5 and the valve body 1 during installation.

[0082] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 In some embodiments of this application, along the depth direction of the vent hole 13, the surface of the second locking block 15 on the side away from the first locking block 531 abuts against the cover plate 51, so that a ventilation gap is formed between the valve cover 5 and the vent hole 13. In this way, the abutment between the second locking block 15 and the valve cover 5 restricts the movement of the valve cover 5 towards the valve body 1, which helps to improve the stability of the installation of the valve cover 5 and the valve body 1.

[0083] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 In some embodiments of this application, the oil-absorbing member 3 is disposed opposite to the waterproof and breathable membrane 2; the vent valve also includes a separator 6, and along the direction in which the oil-absorbing member 3 and the waterproof and breathable membrane 2 are disposed opposite to each other, the surfaces of opposite sides of the separator 6 abut against the oil-absorbing member 3 and the waterproof and breathable membrane 2 respectively. In this way, the separator 6 separates the oil-absorbing member 3 from the waterproof and breathable membrane 2, which helps to reduce the contamination of the waterproof and breathable membrane 2 by the oil accumulated at the oil-absorbing member 3.

[0084] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 It is understood that in this embodiment of the application, the direction in which the oil-absorbing member 3 and the waterproof and breathable membrane 2 are arranged opposite each other is also the thickness direction of the waterproof membrane, which is also the depth direction of the vent 13.

[0085] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 In some embodiments of this application, the separator 6 is fixedly connected to the valve body 1, and the compression part 42 is disposed on the side of the oil-absorbing member 3 away from the separator 6, with the elastic force directed from the compression part 42 to the separator 6. The separator 6 is not only used to separate the oil-absorbing member 3 from the waterproof and breathable membrane 2, but also to compress the oil-absorbing member 3 together with the compression part 42. The compression part 42 is fully utilized, which is beneficial to improving the compactness of the structure.

[0086] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 It is understood that, in this embodiment of the application, along the depth direction of the air outlet 13, the separator 6 and the extrusion part 42 are respectively disposed on opposite sides of the oil suction member 3.

[0087] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 In this embodiment of the application, the fixed connection between the separator 6 and the valve body 1 can be implemented in various ways. For example, it can be welding, bonding, fastener connection or integral molding, etc.

[0088] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8In some embodiments of this application, the vent 13 is a stepped hole, comprising a first diameter segment and a second diameter segment. Along the axial direction of the stepped hole, the first diameter segment is located on the side of the second diameter segment closer to the vent cavity 11. The diameter of the second diameter segment is larger than that of the first diameter segment. The separator 6 abuts against the end face of the first diameter segment near the second diameter segment. The surface of the separator 6 away from the first diameter segment is flush with the end face of the second support segment away from the first diameter segment. The waterproof and breathable membrane 2 covers the side of the second diameter segment away from the first diameter segment. Thus, by having the separator 6 abut against the end face of the first diameter segment near the second diameter segment, the stability of the separator 6 on the valve body 1 is improved. By having the surface of the separator 6 away from the first diameter segment flush with the end face of the second support segment away from the first diameter segment, and by having the waterproof and breathable membrane 2 cover the side of the second diameter segment away from the first diameter segment, the arrangement of the separator 6 is less likely to affect the arrangement of the waterproof and breathable membrane 2 at the vent 13.

[0089] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 In some embodiments of this application, the separator 6 has vent holes 61, which are through holes and are disposed opposite to the waterproof and breathable membrane 2. This allows gas passing through the oil-absorbing member 3 to move to the waterproof and breathable membrane 2 through the vent holes 61, reducing the obstruction of airflow by the separator 6 and improving breathability. In some embodiments of this application, there can be multiple vent holes 61. This further improves breathability. In some embodiments of this application, the multiple vent holes 61 can be arranged at circumferential intervals along the air inlet 12.

[0090] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 In some embodiments of this application, a support post is protruding from the surface of the separator 6 near the oil-absorbing member 3, and the end face of the support post abuts against the oil-absorbing member 3. In this way, by having the end face of the support post abut against the oil-absorbing member 3, the distance between the oil-absorbing member 3 and the waterproof and breathable membrane 2 is larger, which helps to reduce the phenomenon of oil contaminating the waterproof and breathable membrane 2 when it is squeezed out from the oil-absorbing member 3.

[0091] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 In some embodiments of this application, there are multiple support columns, and the arrangement direction of the multiple support columns is perpendicular to the depth direction of the vent hole 13. This increases the contact area between the separator 6 and the oil suction member 3, which is beneficial to improving the installation stability of the oil suction member 3.

[0092] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 In some embodiments of this application, a first support column 62 is included among the multiple support columns. Along the depth direction of the vent hole 13, the first support column 62 is aligned with the elastic part 41. This alignment ensures that the force exerted by the first support column 62 on the extrusion part 42 is consistent with the elastic force, improving the stability of the movement of the extrusion part 42 under the elastic force and preventing rotation. In some embodiments of this application, the elastic part 41 is located at the central axis of the vent hole 13, and the first support column 62 is located at the central axis of the first vent hole 13. This improves the stability of the elastic part 41 in supporting the oil-absorbing member 3.

[0093] Please refer to Figure 5 , Figure 6 , Figure 7 and Figure 8 In some embodiments of this application, the plurality of support columns include a plurality of second support columns 63, which are disposed at the outer edge of the vent 13, and the plurality of second support columns 63 are arranged at intervals along the circumference of the vent 13. This is beneficial to improving the stability of the separator 6 in supporting the oil suction member 3.

[0094] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A vent valve, characterized in that, include: The valve body has a venting cavity, and the inner surface of the venting cavity has an air inlet and an air outlet. A waterproof and breathable membrane is provided at the air outlet to seal the air outlet. An oil-absorbing component, made of elastic material, is disposed in the venting cavity and located between the waterproof and breathable membrane and the air inlet. The extrusion member includes an elastic part and an extrusion part, the extrusion part abutting against the oil-absorbing member, the elastic part being disposed between the extrusion part and the valve body, and applying an elastic force toward the oil-absorbing member to the extrusion part, so that the extrusion part and the valve body jointly compress the oil-absorbing member.

2. The vent valve according to claim 1, characterized in that, The oil-absorbing component divides the venting chamber to form a first venting sub-chamber and a second venting sub-chamber, with the air inlet and air outlet located in the first venting sub-chamber and the second venting sub-chamber, respectively. The extrusion member is disposed in the first ventilated sub-cavity, and the elastic force is directed from the oil-absorbing member to the second ventilated sub-cavity.

3. The vent valve according to claim 2, characterized in that, The elastic part is a spring, and a protrusion is formed on the inner surface of the first vent cavity, and the spring is sleeved on the protrusion.

4. The vent valve according to claim 3, characterized in that, The air inlet includes: A first hole is formed on the protrusion and extends along the extension direction of the protrusion, and a first end of the first hole communicates with the vent cavity. The second hole has one end connected to the external space of the ventilation cavity and the other end connected to the second end of the first hole. The second end of the first hole is located on the side of the end face of the first end away from the protrusion.

5. The vent valve according to claim 4, characterized in that, The first end of the first hole has an opening, which is located on the end face of the protrusion.

6. The vent valve according to claim 4, characterized in that, The second hole includes a damping hole section, the cross-sectional area of ​​which is smaller than the cross-sectional area of ​​the first hole.

7. The vent valve according to any one of claims 1 to 6, characterized in that, The oil-absorbing component is positioned opposite to the waterproof and breathable membrane; The vent valve also includes a separator, with the surfaces of the opposite sides of the separator abutting against the oil-absorbing element and the waterproof and breathable membrane, respectively, along the direction in which the oil-absorbing element and the waterproof and breathable membrane are arranged opposite to each other.

8. The vent valve according to claim 7, characterized in that, The separator is fixedly connected to the valve body, the squeezing part is disposed on the side of the oil suction member away from the separator, and the elastic force is directed from the squeezing part to the separator.

9. A transmission, characterized in that, include: The outer shell has a receiving cavity, the inner surface of which has a mounting hole that connects the external space of the receiving cavity to the receiving cavity; The transmission mechanism is disposed within the receiving cavity; The vent valve according to any one of claims 1 to 8, wherein the vent valve is disposed in the mounting hole.

10. A vehicle, characterized in that, Includes the vent valve as described in any one of claims 1 to 8, or the transmission as described in claim 9.

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