Ventilation plug and vehicle

Abstract

The utility model discloses a ventilation plug and a vehicle, and the ventilation plug comprises a plug body which is provided with a first ventilation channel; the plug cap is movably arranged on the plug body, a second ventilation channel is formed in the plug cap, an inlet of the second ventilation channel is communicated with the first ventilation channel, and an outlet of the second ventilation channel is selectively sealed by the inner circumferential wall of the first ventilation channel and protrudes out of the first ventilation channel; the elastic piece is arranged in the first ventilation channel, and the elastic piece is connected between the plug body and the plug cap in an abutting mode so as to provide elastic reset force for the plug cap. Therefore, through the arrangement of the ventilation plug, the effect of automatically adjusting the air pressure balance of the inner side and the outer side of the ventilation plug can be achieved through the interaction between the elastic force generated by the elastic piece and the pressure difference of the inner side and the outer side of the ventilation plug, the peripheral wall of the plug cap and the inner wall of the plug body are in sealing fit in the tangential direction, and the waterproof reliability of the ventilation plug in the exhaust process can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vent plug and a vehicle. Background Art

[0002] At present, the rainfall in summer is relatively heavy, especially in the south, and water is prone to accumulation. When a vehicle passes through excessively high water, water will enter the transmission, causing the oil to emulsify, resulting in insufficient clutch pressure, rust on the shaft and gears, and leading to failure.

[0003] In the related technology, in order for vehicles to meet higher wading requirements, the normally open vent plug currently used in the market presses the valve plate onto the vent plug seat through a spring, and the internal pressure acts on the valve plate. When the internal pressure is greater than the external pressure, the internal air pressure overcomes the spring pressure and pushes the valve plate to achieve ventilation. The valve plate is prone to aging and failure. Once water accumulates in the valve body of this structure, it will enter the transmission when the valve plate is opened, posing a risk of water ingress. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a vent plug, which can realize the effect of automatically adjusting the air pressure balance inside and outside the vent plug by utilizing the interaction between the elastic force generated by the elastic member and the pressure difference between the inside and outside of the vent plug, and the peripheral wall of the plug cap and the inner wall of the plug body are tangentially sealed, which can also improve the waterproof reliability of the vent plug during exhaust.

[0005] The utility model further provides a vehicle.

[0006] According to the first aspect of the utility model, the vent plug includes: a plug body, the plug body forming a first vent channel; a plug cap, the plug cap is movably arranged on the plug body, the plug cap forms a second vent channel, the inlet of the second vent channel is connected to the first vent channel, and the outlet of the second vent channel is selectively closed by the inner circumferential wall of the first vent channel and protrudes from the first vent channel; an elastic member, the elastic member is arranged in the first vent channel, the elastic member abuts between the plug body and the plug cap to provide an elastic restoring force to the plug cap.

[0007] Therefore, by setting up the vent plug, it is possible to utilize the interaction between the elastic force generated by the elastic member and the pressure difference between the inside and outside of the vent plug to achieve the effect of automatically adjusting the air pressure balance inside and outside the vent plug, and the tangential sealing cooperation between the peripheral wall of the plug cap and the inner wall of the plug body can also improve the waterproof reliability of the vent plug during exhaust.

[0008] In some examples of the utility model, the plug cap includes: a plug cap body, the plug cap body forming the second ventilation channel; a connecting rod, one end of the connecting rod is connected to the plug cap body; an abutment seat, the abutment seat is connected to the other end of the connecting rod, and the elastic member abuts against the abutment seat.

[0009] In some examples of the present invention, the elastic member is a spring, and the spring is sleeved on the connecting rod.

[0010] In some examples of the present invention, the plug body includes: a plug body, the plug body forming the first ventilation channel; an abutment portion, the abutment portion is arranged in the first ventilation channel, the abutment portion is formed with a through hole, the connecting rod passes through the through hole, and the elastic member abuts against the abutment portion.

[0011] In some examples of the present invention, the abutting portion is formed with a plurality of ventilation holes, and the plurality of ventilation holes are arranged around the through hole.

[0012] In some examples of the present invention, the inlet of the second ventilation channel is formed on the bottom wall of the plug cap body, and the outlet of the second ventilation channel is formed on the outer peripheral wall of the plug cap body.

[0013] In some examples of the present invention, the second ventilation channel has a plurality of corresponding inlets on the bottom wall of the plug cap body, and both ends of the second ventilation channel are located on the outer peripheral wall of the plug cap body and are both provided with the outlets.

[0014] In some examples of the present invention, there are multiple second ventilation channels, and the multiple second ventilation channels are cross-arranged and connected in the plug cap body.

[0015] In some examples of the present invention, the plug cap is formed with a flange sealing edge, and the flange sealing edge is sealingly matched with the top end surface of the plug body.

[0016] A vehicle according to a second aspect of the utility model includes: the above-mentioned vent plug.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a schematic diagram of the structure of the vent plug according to an embodiment of the utility model;

[0020] Figure 2 is an exploded view of a vent plug according to an embodiment of the utility model;

[0021] Figure 3 is another exploded view of the vent plug according to an embodiment of the utility model;

[0022] Figure 4 is a front view of a vent plug according to an embodiment of the utility model;

[0023] Figure 5 yes Figure 4 Sectional view in the AA direction;

[0024] Figure 6 is a front exploded view of a vent plug according to an embodiment of the utility model;

[0025] Figure 7 yes Figure 6 Cross-sectional view in the BB direction;

[0026] Figure 8 yes Figure 6 Cross-sectional view along CC direction.

[0027] Reference numerals:

[0028] 100. Ventilation plug;

[0029] 1. plug body; 11. first ventilation channel; 12. plug body; 13. abutment portion; 131. perforation; 132. ventilation hole;

[0030] 2. plug cap; 21. second ventilation channel; 22. plug cap body; 221. inlet; 222. outlet; 23. connecting rod; 24. abutment seat; 25. flange sealing edge;

[0031] 3. Elastic parts; 4. Sealing parts. DETAILED DESCRIPTION

[0032] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0033] Reference below Figure 1-Figure 8 The vent plug 100 according to the embodiment of the utility model can utilize the interaction between the elastic force generated by the elastic member 3 and the pressure difference between the inside and outside of the vent plug 100 to achieve the effect of automatically adjusting the air pressure balance inside and outside the vent plug 100, and the peripheral wall of the plug cap 2 and the inner wall of the plug body 1 are tangentially sealed, which can also improve the waterproof reliability of the vent plug 100 during exhaust.

[0034] Combination Figure 1-Figure 8As shown, the vent plug 100 according to the first embodiment of the utility model mainly includes a plug body 1, a plug cap 2 and an elastic member 3.

[0035] Specifically, the plug body 1 is formed with a first ventilation channel 11, the plug cap 2 is movably arranged on the plug body 1, the plug cap 2 is formed with a second ventilation channel 21, the inlet 221 of the second ventilation channel 21 is connected with the first ventilation channel 11, the outlet 222 of the second ventilation channel 21 is selectively closed by the inner peripheral wall of the first ventilation channel 11 and protrudes from the first ventilation channel 11, the elastic member 3 is arranged in the first ventilation channel 11, and the elastic member 3 abuts between the plug body 1 and the plug cap 2 to provide elastic reset force to the plug cap 2. The plug body 1 is usually threadedly matched on the boss of the transmission.

[0036] In addition, a first ventilation channel 11 is formed inside the plug body 1 to allow gas to flow, and the plug cap 2 can be axially (such as attached Figure 1 The plug body 1 is movably arranged in the upper and lower directions as shown in the figure, and the plug cap 2 is formed with a second ventilation channel 21 allowing gas to flow, and the inlet 221 of the second ventilation channel 21 is interconnected with the first ventilation channel 11; the elastic member 3 can produce elastic deformation to form an elastic force, and the elastic member 3 is axially abutted between the plug body 1 and the plug cap 2. Since the plug body 1 is fixed on the transmission, the elastic member 3 can provide an elastic restoring force to the plug cap 2 to make it move.

[0037] For example, when the external air pressure of the vent plug 100 is not less than the internal air pressure of the vent plug 100, the elastic member 3 is in a slightly compressed state, which can provide an elastic force for the plug cap 2 to press toward one side of the plug body 1, so that the outlet 222 of the second vent channel 21 is tightly closed by the inner circumferential wall of the first vent channel 11, avoiding the risk that the gas in the vent plug 100 can escape to the outside of the vent plug 100 through the inlet 221 and outlet 222 of the first vent channel 11 and the second vent channel 21 in turn, thereby ensuring the air pressure stability inside the vent plug 100.

[0038] For another example, when the external air pressure of the vent plug 100 is lower than the internal air pressure of the vent plug 100, the pressure difference on the plug cap 2 is greater than the elastic force of the elastic member 3, and the elastic member 3 is further compressed (the pressure overcomes the compression elastic force and the gravity of the plug cap 2 to do work), and the plug cap 2 also moves toward the side away from the plug body 1, so that the outlet 222 of the second ventilation channel 21 can extend axially out of the inner peripheral wall edge of the first ventilation channel 11, so that the gas in the vent plug 100 can smoothly pass through the first ventilation channel 11 in sequence. The air is discharged to the outside of the vent plug 100 through the inlet 221 and the outlet 222 of the second vent channel 21 until the air pressure inside and outside the vent plug 100 is roughly equal, and the elastic force of the elastic member 3 is greater than the pressure difference exerted on the plug cap 2. At this time, the plug cap 2 is reset and moved under the action of the reset elastic force of the elastic member 3 and the gravity of the plug cap 2, and the outlet 222 of the second vent channel 21 is closed by the inner wall of the first vent channel 11 again, so that the dynamic balance effect of automatically adjusting the air pressure in the transmission can be achieved through the vent plug 100.

[0039] Moreover, when the vent plug 100 discharges the gas inside the transmission to the outside, the outlet 222 of the second ventilation channel 21 is closed by the inner circumferential wall of the first ventilation channel 11, so the inner circumferential wall of the first ventilation channel 11 and the outer circumferential wall of the second ventilation channel 21 fit tightly together. This can avoid the risk of external water droplets penetrating into the transmission along the gap between the inner circumferential wall of the first ventilation channel 11 and the outer circumferential wall of the second ventilation channel 21, thereby improving the waterproof reliability of the vent plug 100 during exhaust.

[0040] Compared with the traditional normally open vent plug (which presses the valve plate onto the vent plug seat through a spring, and the internal pressure acts on the valve plate. When the internal pressure is greater than the external pressure, the internal air pressure overcomes the spring pressure and pushes the valve plate to achieve ventilation), the embodiment in the present case eliminates the rubber valve plate, and directly presses the plug cap 2 onto the plug body 1 through the elastic member 3. The plug cap 2 and the plug body 1 fit tightly together to prevent water from accumulating on the vent plug 100, thereby extending the service life of the vent plug 100 and improving the waterproof reliability.

[0041] Therefore, by setting up the vent plug 100, it is possible to utilize the interaction between the elastic force generated by the elastic member 3 and the pressure difference between the inside and outside of the vent plug 100 to achieve the effect of automatically adjusting the air pressure balance inside and outside the vent plug 100, and the circumferential wall of the plug cap 2 and the inner wall of the plug body 1 are tangentially sealed, which can also improve the waterproof reliability of the vent plug 100 during exhaust.

[0042] According to some optional embodiments of the present invention, combined with Figure 2 , Figure 3 , Figure 5-Figure 7As shown, the plug cap 2 includes a plug cap body 22, a connecting rod 23 and an abutment seat 24. The plug cap body 22 is formed with a second ventilation channel 21. One end of the connecting rod 23 is connected to the plug cap body 22. The abutment seat 24 is connected to the other end of the connecting rod 23. The elastic member 3 abuts against the abutment seat 24.

[0043] Among them, along the direction away from the plug body 1, the abutment seat 24, the connecting rod 23 and the plug cap body 22 are connected in sequence, the abutment seat 24 and the plug cap body 22 are respectively located at the axial ends of the connecting rod 23, and the connecting rod 23 is axially movable and penetrates the plug body 1, and the plug body 1 separates the abutment seat 24 and the plug cap body 22 on both sides thereof, and the elastic member 3 abuts between the abutment seat 24 and the plug body 1, so that the abutment seat 24 can be driven to move by the deformation of the elastic member 3, thereby changing the relative position between the plug cap body 22 and the plug body 1, thereby achieving the effect of opening or closing the second ventilation channel 21. In addition, the abutment seat 24 can play a role in preventing the plug cap 2 from falling off, thereby preventing the plug cap 2 from falling off from the plug body 1.

[0044] Specifically, combined Figure 2 and Figure 3 As shown, the elastic member 3 is a spring, and the spring is sleeved on the connecting rod 23. It can be understood that the spring can be elastically deformed when subjected to external force, and can return to its original shape when the external force is removed. Therefore, the spring is sleeved on the connecting rod 23, and the elastic restoring force of the spring can be used to automatically drive the connecting rod 23 to move, that is, when the air pressure inside and outside the vent plug 100 is roughly equal, the spring can apply a force toward one side of the plug body 1 to the connecting rod 23, thereby achieving the effect of automatically closing the vent plug 100.

[0045] Furthermore, combined with Figure 5 As shown, the plug body 1 includes a plug body 12 and an abutment portion 13 . The plug body 12 forms a first ventilation channel 11 . The abutment portion 13 is arranged in the first ventilation channel 11 . The abutment portion 13 forms a through hole 131 . The connecting rod 23 passes through the through hole 131 . The elastic member 3 abuts against the abutment portion 13 .

[0046] That is, the through hole 131 on the abutment portion 13 can provide a position for the connecting rod 23 to penetrate, so that the connecting rod 23 can be connected to the plug cap body 22 and the abutment seat 24 on both sides of the abutment portion 13, respectively, and the axial movement range of the plug cap body 22 and the abutment seat 24 can be limited to avoid the risk of the plug cap 2 being separated from the plug body 1, thereby ensuring the normal exhaust and sealing work of the vent plug 100. In addition, the abutment portion 13 can also play a role in supporting the elastic member 3, thereby providing the elastic member 3 with a stable support fixed end, thereby ensuring the working stability of the vent plug 100.

[0047] Specifically, combined Figure 3 , Figure 5 and Figure 7 As shown, the abutment portion 13 is formed with a plurality of vent holes 132, and the plurality of vent holes 132 are arranged around the through hole 131. The abutment portion 13 is provided with a plurality of vent holes 132 at intervals along the circumferential direction, and the plurality of vent holes 132 surround the outer periphery of the through hole 131, so that the gas in the first vent channel 11 can flow from the end away from the plug cap body 22 to the second vent channel 21 after passing through the plurality of vent holes 132 on the abutment portion 13, thereby providing the gas in the vent plug 100 with a flow condition to flow to the second vent channel 21, thereby ensuring the normal exhaust work of the vent plug 100.

[0048] Furthermore, combined with Figure 3 , Figure 5 and Figure 7 As shown, the inlet 221 of the second ventilation channel 21 is formed on the bottom wall of the plug cap body 22 , and the outlet 222 of the second ventilation channel 21 is formed on the outer peripheral wall of the plug cap body 22 .

[0049] It can be understood that the inlet 221 and the outlet 222 of the second ventilation channel 21 are respectively located on the bottom wall and the outer peripheral wall of the plug cap body 22, and the bottom wall of the second ventilation channel 21 is closer to the first ventilation channel 11, while the outer peripheral wall of the second ventilation channel 21 is slightly farther from the first ventilation channel 11. Therefore, the gas in the first ventilation channel 11 will flow to the inlet 221 of the bottom wall of the second ventilation channel 21 which is closer in advance, and then flow from the inlet 221 along the guidance of the second ventilation channel 21 to the outlet 222, thereby improving the rationality of the layout of the exhaust flow path.

[0050] Specifically, combined Figure 2 As shown, the second ventilation channel 21 has a plurality of corresponding inlets 221 on the bottom wall of the plug cap body 22 , both ends of the second ventilation channel 21 are located on the outer peripheral wall of the plug cap body 22 , and both ends of the second ventilation channel 21 are provided with outlets 222 .

[0051] That is to say, when the vent plug 100 is venting, the multiple inlets 221 can increase the inflow position and inflow amount of the gas in the first ventilation channel 11 into the second ventilation channel 21, and outlets 222 are provided at both ends of the second ventilation channel 21. This can also increase the outflow amount of the gas in the second ventilation channel 21 flowing out of the gas outflow position outside the vent plug 100, thereby improving the exhaust efficiency.

[0052] In addition, both ends of the second ventilation channel 21 are located on the outer peripheral wall of the plug cap body 22, so that when there is no need to exhaust the vent plug 100, the outlet 222 of the second exhaust channel is tightly closed by the inner peripheral wall of the first ventilation channel 11, thereby ensuring the stability of the air pressure inside the vent plug 100.

[0053] According to some optional embodiments of the present invention, combined with Figure 6-Figure 8 As shown, there are multiple second ventilation channels 21, and the multiple second ventilation channels 21 are cross-arranged in the plug cap body 22, and the multiple second ventilation channels 21 are connected.

[0054] Among them, multiple second ventilation channels 21 can increase the number of exhaust flow paths, thereby improving the exhaust efficiency of the vent plug 100 when exhausting; and multiple second ventilation channels 21 are arranged to cross each other in the plug cap body 22, so that the gas flowing in from the inlet 221 can flow to different outlets 222 at the same time through the multiple second ventilation channels 21 that cross each other, thereby further improving the exhaust efficiency, and avoiding the outlet 222 from being exposed to the outside of the vent plug 100 for too long, reducing the risk of debris entering the inside of the vent plug 100 through the outlet 222 when the vent plug 100 is exhausting.

[0055] According to some optional embodiments of the present invention, combined with Figure 2 , Figure 6 and Figure 7 As shown, the plug cap 2 is formed with a flange sealing edge 25, and the flange sealing edge 25 is sealed with the top end surface of the plug body 1. With such an arrangement, a shielding protection effect can be formed on the upper part of the outlet 222, thereby avoiding the risk of water droplets entering the interior of the vent plug 100 along the gap between the inner circumferential wall of the first vent channel 11 and the outer circumferential wall of the second vent channel 21, thereby improving the waterproof reliability; it can also form a secondary sealing effect on the gas in the vent plug 100, preventing the gas in the vent plug 100 from unexpectedly leaking along the gap between the inner circumferential wall of the first vent channel 11 and the outer circumferential wall of the second vent channel 21, thereby ensuring the gas sealing in the vent plug 100.

[0056] Optionally, the plug body 1 is sealed with the transmission housing through a seal 4, which can further improve the waterproof reliability of the vent plug 100.

[0057] The assembly process of the vent plug 100 is introduced below: a spring and a connecting rod 23 are provided at the lower end of the plug cap body 22, the connecting rod 23 is clearance-matched with the through hole 131, and the connecting rod 23 can move up and down. During assembly, after the plug cap 2 and the plug body 1 are matched, the spring is inserted into the connecting rod 23 from the bottom of the plug body 1, the upper end of the spring is limited on the abutment 13, and the abutment seat 24 is installed at the lower end of the spring. After the vent plug 100 is assembled, the whole is installed on the shell boss through the connecting thread.

[0058] In addition, there are evenly distributed inlets 221 on the plug cap 2 in the vertical direction, the side walls of the plug cap 2 are tightly fitted with the inner wall of the plug body 1 to prevent air leakage, and there are evenly distributed outlets 222 on the side of the plug cap 2, and the outlets 222 and the inlets 221 are connected inside the plug cap 2; there is a flange sealing edge 25 at the top of the plug cap 2, when the plug cap 2 is pressed onto the plug body 1 by the action of the spring, the flange sealing edge 25 on the plug cap 2 is pressed onto the top of the plug body 1, and the flange sealing edge 25 and the top of the plug body 1 have a sealing effect.

[0059] During operation, when the internal pressure of the transmission increases and the internal and external pressure difference is sufficiently greater than the spring force, the internal gas will pass through the vent holes 132 evenly distributed on the plug body 1 and act on the lower end of the plug cap 2, pushing the plug cap 2 to move upward, and when the outlet 222 of the plug cap 2 moves upward to expose the air, the gas is discharged from the atmosphere through the inlet 221-outlet 222 to achieve ventilation; after the pressure is unloaded, the plug cap 2 is pressed against the abutment 13 again under the spring return force, and the entire vent plug 100 is relatively waterproof and does not retain water.

[0060] The vehicle according to the embodiment of the second aspect of the utility model includes the vent plug 100 of the above embodiment. The vehicle with the vent plug 100 can achieve the effect of automatically adjusting the air pressure balance inside and outside the vent plug 100, and can also improve the waterproof reliability of the vent plug 100 during exhaust, thereby improving the market competitiveness of the vehicle.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A vent plug (100), characterized in that: include: A plug body (1), wherein the plug body (1) is formed with a first ventilation channel (11); a plug cap (2), the plug cap (2) being movably arranged on the plug body (1), the plug cap (2) being formed with a second ventilation channel (21), the inlet (221) of the second ventilation channel (21) being in communication with the first ventilation channel (11), and the outlet (222) of the second ventilation channel (21) being selectively closed by the inner peripheral wall of the first ventilation channel (11) and protruding from the first ventilation channel (11); An elastic member (3), the elastic member (3) being arranged in the first ventilation channel (11), the elastic member (3) being in contact between the plug body (1) and the plug cap (2) so as to provide an elastic restoring force to the plug cap (2).

2. The vent plug (100) according to claim 1, characterized in that: The plug cap (2) comprises: A plug cap body (22), wherein the plug cap body (22) is formed with the second ventilation channel (21); A connecting rod (23), one end of the connecting rod (23) being connected to the plug cap body (22); An abutment seat (24), the abutment seat (24) being connected to the other end of the connecting rod (23), and the elastic member (3) abutting against the abutment seat (24).

3. The vent plug (100) according to claim 2, characterized in that: The elastic member (3) is a spring, and the spring is sleeved on the connecting rod (23).

4. The vent plug (100) according to claim 2, characterized in that: The plug body (1) comprises: A plug body (12), wherein the plug body (12) is formed with the first ventilation channel (11); An abutment portion (13), the abutment portion (13) being arranged in the first ventilation channel (11), the abutment portion (13) being formed with a through hole (131), the connecting rod (23) being penetrated by the through hole (131), and the elastic member (3) being in abutment with the abutment portion (13).

5. The vent plug (100) according to claim 4, characterized in that: The abutment portion (13) is formed with a plurality of ventilation holes (132), and the plurality of ventilation holes (132) are arranged around the through hole (131).

6. The vent plug (100) according to claim 2, characterized in that: The inlet (221) of the second ventilation channel (21) is formed on the bottom wall of the plug cap body (22), and the outlet (222) of the second ventilation channel (21) is formed on the outer peripheral wall of the plug cap body (22).

7. The vent plug (100) according to claim 6, characterized in that: The second ventilation channel (21) has a plurality of corresponding inlets (221) on the bottom wall of the plug cap body (22), and both ends of the second ventilation channel (21) are located on the outer peripheral wall of the plug cap body (22) and are both provided with outlets (222).

8. The vent plug (100) according to claim 2, characterized in that: There are a plurality of second ventilation channels (21), and the plurality of second ventilation channels (21) are cross-arranged and connected in the plug cap body (22).

9. The vent plug (100) according to claim 1, characterized in that: The plug cap (2) is formed with a flange sealing edge (25), and the flange sealing edge (25) is in sealing engagement with the top end surface of the plug body (1).

10. A vehicle, characterized in that: include: The vent plug (100) according to any one of claims 1 to 9.

Images