Pull-out device of ventilation plug

Abstract

The utility model discloses a device for pulling out a ventilation plug, the ventilation plug comprises a plug main body and a clamping part which are connected, the clamping part is suitable for being clamped in a mounting hole of a shell, and the device for pulling out the ventilation plug comprises a pulling-out handle; the pulling-out seat is provided with an avoiding space used for avoiding the plug main body, the pulling-out seat is provided with a supporting part, the supporting part is suitable for extending to the position between the plug main body and the shell, the pulling-out handle is connected to the side, away from the supporting part, of the pulling-out seat, and the pulling-out handle is used for driving the supporting part to drive the plug main body to pull out the clamping part from the mounting hole. According to the pulling-out device of the ventilation plug, the ventilation plug can be stably pulled out of the shell, in the pulling-out process, stress on the ventilation plug is even, the situation that the ventilation plug is damaged due to the fact that the clamping portion is broken in the installation hole due to uneven stress on the ventilation plug is avoided, and the pulling-out device of the ventilation plug is compact in structure, easy to operate, low in cost, reliable in performance and low in requirement for the operation environment. The adaptability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle accessories, in particular to a device for pulling out a vent plug. Background Art

[0002] The electric power steering system is installed on the lower column of the car steering wheel or on the steering gear to play the role of power steering. The air pressure guarantee part of the electric power steering system cavity is composed of a vent plug and a shell. The vent plug is installed in the hole of the shell. The vent plug ensures that the electric power steering system is consistent with the external atmospheric pressure, reduces the pressure difference of continuous gas entering and leaving the shell during the electric power steering process, and prevents water, dirt, mud and other pollutants from entering the shell.

[0003] At present, the vent plug is press-fitted into the housing mounting hole through a snap-fit ​​form, and is sealed by an internal O-ring with an interference fit with the housing. However, during the test process, the recycled use of the sample leads to the need for repeated disassembly and assembly of the vent plug in the steering system. If the snap is unevenly stressed during the disassembly and assembly process, the snap part structure will directly cause it to fold inside the housing, causing foreign matter to enter, and the sample cannot be recycled, resulting in losses. In addition, the vent plug is mostly disassembled with a screwdriver, which makes one side of the vent plug warped and difficult to pull out with other personnel. The disassembly process can also easily cause serious scratches on the surface of the housing, resulting in failure of the cooperation with the O-ring and failure of the sample seal. There is room for improvement. 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, the utility model proposes a vent plug extraction device, which can smoothly extract the vent plug from the shell. During the extraction process, the vent plug is evenly stressed, which avoids the vent plug being unevenly stressed, causing the clamping part to break in the installation hole, resulting in damage to the vent plug. The utility model has a compact structure, simple operation, low cost, reliable performance, low requirements on the operating environment, and strong adaptability.

[0005] According to the extraction device of the vent plug in the embodiment of the utility model, the vent plug includes a connected plug body and a clamping portion, the clamping portion is suitable for being clamped in the mounting hole of the shell, and the extraction device includes: a extraction handle; a extraction seat, the extraction seat is formed with an escape space for avoiding the plug body, and the extraction seat is formed with a supporting portion, the supporting portion is suitable for extending between the plug body and the shell, the extraction handle is connected to a side of the extraction seat away from the supporting portion, and the extraction handle is used to drive the supporting portion to drive the plug body to extract the clamping portion from the mounting hole.

[0006] The extraction device of the vent plug according to the embodiment of the utility model can be used to extract the vent plug, which is convenient for operators to operate without using a screwdriver to extract it. The supporting part is supported between the plug body and the shell, so that the vent plug can be evenly stressed when a torque is applied to pull it out, thereby avoiding uneven stress on the vent plug that causes the clamping part to break in the mounting hole, resulting in damage to the vent plug, and achieving smooth extraction of the vent plug from the mounting hole. The extraction device has a compact structure, simple operation, low cost, reliable performance, low requirements on the operating environment, and strong adaptability.

[0007] According to the vent plug extraction device of some embodiments of the utility model, the extraction seat includes a first plate portion, a connecting portion and a second plate portion, the connecting portion is connected between the first plate portion and the second plate portion, the first plate portion and the second plate portion are spaced apart and relatively distributed and define the avoidance space, the supporting portion is arranged on the second plate portion, and the extraction handle is connected to the side of the first plate portion facing away from the second plate portion.

[0008] According to the vent plug extraction device of some embodiments of the utility model, the second plate portion is further formed with an escape opening, the escape opening is communicated with the escape space, and the escape opening is used to avoid the clamping portion.

[0009] According to the vent plug extraction device of some embodiments of the utility model, the support portion is constructed as two support plates, the two support plates are located on both sides of the avoidance port, and the two support plates are suitable for extending together between the plug body and the shell.

[0010] According to the vent plug extraction device of some embodiments of the present invention, the second plate portion is also formed with an arcuate limiting surface, the arcuate limiting surface is connected to the support plate, and the arcuate limiting surface is suitable for limiting and pressing against the outer peripheral surface of the plug body.

[0011] According to the vent plug extraction device of some embodiments of the present invention, the connecting portion is constructed to include at least two connecting columns, and the at least two connecting columns are distributed and spaced apart and respectively connected between the first plate portion and the second plate portion.

[0012] According to the vent plug extraction device of some embodiments of the present invention, the first plate portion is formed with a penetration hole, and the extraction handle is penetrated through the penetration hole.

[0013] According to the vent plug extraction device of some embodiments of the utility model, the extraction handle includes a limit end, a middle section and a gripping end, and the limit end and the gripping end are respectively connected to the two ends of the middle section; the middle section is penetrated through the penetration hole, the outer diameter of the limit end and the outer diameter of the gripping end are both larger than the aperture of the penetration hole, and the gripping end is formed with a spherical gripping portion.

[0014] According to the vent plug extraction device of some embodiments of the utility model, the extraction handle includes a connecting end and a gripping end, the connecting end is connected to the first plate portion, and the gripping end is formed with a spherical gripping portion.

[0015] According to the vent plug extraction device of some embodiments of the present invention, an inclined guide surface is formed at the end of the support portion, and the support portion is suitable for extending along the inclined guide surface to between the plug body and the shell.

[0016] 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

[0017] 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:

[0018] Figure 1 It is a structural schematic diagram of the assembly of the extraction device and the vent plug according to an embodiment of the utility model;

[0019] Figure 2 is a schematic structural diagram of a housing according to an embodiment of the utility model;

[0020] Figure 3 is a cross-sectional view of a vent plug installed on a housing according to an embodiment of the utility model;

[0021] Figure 4 yes Figure 3 A partial enlarged view of

[0022] Figure 5 It is a structural schematic diagram of the extraction device for extracting the vent plug according to an embodiment of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the extraction device according to an embodiment of the utility model;

[0024] Figure 7 It is a schematic structural diagram of a vent plug according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] Vent plug extraction device 100, vent plug 200, plug body 201, clamping portion 202, housing 300, mounting hole 301,

[0027] Pull out the handle 1, the connecting end 11, the gripping end 12, the spherical gripping portion 122,

[0028] The pull-out seat 2 , the first plate portion 21 , the through hole 211 , the connecting portion 22 , the second plate portion 23 , the avoidance opening 231 , the arc-shaped limiting surface 241 , the avoidance space 24 , the supporting portion 25 , and the inclined guiding surface 251 . DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 the present invention can be understood according to specific circumstances.

[0032] Reference below Figure 1-Figure 7 A vent plug extraction device 100 according to an embodiment of the utility model is described. The vent plug extraction device 100 can smoothly extract the vent plug 200 from the shell 300. During the extraction process, the vent plug 200 is subjected to uniform force, thereby avoiding uneven force on the vent plug 200 causing the clamping part to break in the mounting hole, resulting in damage to the vent plug 200. The vent plug 200 has a compact structure, simple operation, low cost, reliable performance, low requirements on the operating environment, and strong adaptability.

[0033] like Figure 1-Figure 7As shown, the extraction device 100 of the vent plug according to the embodiment of the utility model comprises: an extraction handle 1 and an extraction seat 2 .

[0034] The vent plug 200 is installed on the housing of the electric power steering system to adjust the pressure balance between the inside and outside of the system so that during the driving of the vehicle, the electric power steering system is consistent with the external atmospheric pressure, thereby maintaining the stability of the internal pressure of the electric power steering system. At the same time, it can prevent external impurities such as water and dust from entering the housing 300 and affecting the normal operation of the electric power steering system.

[0035] The vent plug 200 includes a connected plug body 201 and a snap-on portion 202. The plug body 201 is the main body of the vent plug 200 and is installed on the outside of the shell 300 to allow gas to flow freely between the inside and outside of the electric power steering system. At the same time, it can cover the mounting hole 301 of the shell 300 to prevent foreign matter from entering the shell 300. The snap-on portion 202 is the connecting portion of the vent plug 200. The snap-on portion 202 is suitable for snapping into the mounting hole 301 of the shell 300. That is to say, the snap-on portion 202 is located at the lower part of the vent plug 200, and its shape and size match those of the mounting hole 301 of the shell 300, so that the snap-on portion 202 can be snapped into the mounting hole 301 to achieve snap-on fit, thereby achieving a stable installation of the vent plug 200 on the shell 300 and preventing the vent plug 200 from loosening or falling off. Figure 4 As shown, the side wall of the mounting hole 301 can be designed to be tapered, and the snap-fit ​​portion 202 can be set as a buckle. In this way, when the vent plug 200 is actually installed, the buckle is snapped into the corresponding mounting hole 301 to provide axial clamping force, and an O-ring can be installed on the outer periphery of the connection between the mounting hole 301 and the mounting hole 301 to form a cone, thereby sealing the mounting hole 301, thereby achieving a tight and stable installation of the vent plug 200 and ensuring the sealing.

[0036] The extraction device 100 is used to extract the vent plug 200, wherein the extraction handle 1 is located at the upper part of the extraction device 100, for the operator to hold, so as to facilitate applying torque to extract the vent plug 200. The extraction seat 2 is connected to the lower part of the extraction handle 1, which is the main part of the extraction device 100, and is used to support and position the vent plug 200. The extraction seat 2 is formed with an escape space 24 for avoiding the plug body 201, so as to avoid interference between the extraction seat 2 and the plug body 201 during the use of the extraction device 100, thereby protecting the plug body 201 and preventing it from being damaged.

[0037] The extraction seat 2 is formed with a support portion 25, which is suitable for extending between the plug body 201 and the shell 300. The extraction handle 1 is connected to the side of the extraction seat 2 away from the support portion 25. The extraction handle 1 is used to drive the support portion 25 to drive the plug body 201 to pull the clamping portion 202 out of the mounting hole 301.

[0038] That is to say, the support portion 25 can be located below the extraction handle 1 and connected to the lower part of the extraction seat 2. When the extraction device 100 is actually used to extract the vent plug 200, the electric power steering system can be fixed first, and the support portion 25 extends to and supports between the plug body 201 and the shell 300. When the operator holds the extraction handle 1 and applies an upward axial force to move the vent plug 200 away from the shell 300, the extraction handle 1 drives the support portion 25 through the support of the extraction seat 2 to provide a uniform upward axial force to the support portion 25, so that the support portion 25 pushes the plug body 201 upward, that is, moves in the direction of the mounting hole 301 away from the shell 300, so as to drive the clamping portion 202 to be stably extracted from the mounting hole 301, thereby realizing the extraction of the vent plug 200 from the mounting hole 301.

[0039] Therefore, by using the extraction device 100 to extract the vent plug 200, the operator can conveniently operate without using a screwdriver to extract it. The support portion 25 is supported between the plug body 201 and the shell 300, so that when a torque is applied to extract it, the vent plug 200 is evenly stressed, thereby avoiding uneven stress on the vent plug 200 causing the clamping portion 202 to break in the mounting hole 301, resulting in damage to the vent plug 200, and achieving smooth extraction of the vent plug 200 from the mounting hole 301. The extraction device 100 has a compact structure, simple operation, low cost, reliable performance, low requirements on the operating environment, and strong adaptability.

[0040] In some embodiments, the extraction seat 2 includes a first plate portion 21, a connecting portion 22 and a second plate portion 23, the connecting portion 22 is connected between the first plate portion 21 and the second plate portion 23, the first plate portion 21 and the second plate portion 23 are spaced apart and relatively distributed and define an avoidance space 24, the support portion 25 is provided on the second plate portion 23, and the extraction handle 1 is connected to the side of the first plate portion 21 away from the second plate portion 23.

[0041] Specifically, Figure 6 As shown, the first plate portion 21 and the second plate portion 23 are constructed as a rectangular plate structure, and the first plate portion 21 and the second plate portion 23 are relatively distributed with a certain distance therebetween, and the distance therebetween is greater than the height dimension of the plug body 201. One end of the connecting portion 22 is connected to the end of the first plate portion 21, and the other end is connected to the end of the second plate portion 23, and is connected to the same side of the first plate portion 21 and the second plate portion 23, thereby defining an avoidance space 24 that can accommodate the plug body 201. Therefore, the first plate portion 21 and the second plate portion 23 are connected by the connecting portion 22 to form a "concave" structure of the extraction seat 2, which can enhance the strength and stability of the extraction device 100 and adapt to the extraction process.

[0042] Among them, Figure 6As shown, the support portion 25 is arranged on the second plate portion 23, that is, arranged below the first plate portion 21, which can provide stable support and positioning during the extraction process. The extraction handle 1 is connected to the upper side of the first plate portion 21, that is, the side away from the second plate portion 23, which is convenient for the user to operate. Figure 5 As shown, the support portion 25 can be radially extended between the plug body 201 and the shell 300, that is, the support portion 25 can be pressed and supported between the lower end surface of the plug body 201 and the outer side surface of the shell 300. At this time, the plug body 201 is accommodated in the avoidance space 24 as a whole, and the extraction handle 1 is supported by the first plate portion 21. The operator can hold the extraction handle 1 and apply a torque to make the lower end surface of the plug body 201 tightly pressed against the upper end surface of the support portion 25, evenly bearing the upward axial force, ensuring that the vent plug 200 is smoothly pulled out, and the clamping portion 202 is detached from the mounting hole 301.

[0043] It should be noted that there is a certain gap distance between the lower end surface of the plug body 201 and the outer side surface of the shell 300, and the thickness of the support portion 25 should be set to be slightly smaller than this gap distance. As a result, the support portion 25 can be smoothly extended between the plug body 201 and the shell 300, making it easy to pull out the vent plug 200 without damaging the lower end surface of the plug body 201 and the outer side surface of the shell 300, thereby avoiding scratches on the surface of the shell 300, resulting in failure of the cooperation with the O-ring and failure of the seal of the vent plug 200.

[0044] In some embodiments, the second plate portion 23 is further formed with an escape opening 231. Figure 6 As shown, the avoidance opening 231 is arranged at the middle position of the second plate portion 23 and is connected to the avoidance space 24 for avoiding the clamping portion 202. That is to say, when the plug body 201 of the vent plug 200 is accommodated in the avoidance space 24, the clamping portion 202 thereon can pass through the avoidance opening 231 smoothly without hindrance, i.e., avoiding interference between the second plate portion 23 and the clamping portion 202, and the size of the avoidance opening 231 should be greater than or equal to the size of the clamping portion 202 to ensure that the avoidance opening 231 can completely avoid accommodating the clamping portion 202, thereby ensuring the smoothness of the extraction process and improving the extraction efficiency.

[0045] In some embodiments, Figure 6 As shown, the support portion 25 is constructed as two support plates, and the two support plates are located on both sides of the avoidance opening 231 and extend along the same end of the second plate portion 23. In this way, interference between the support plates and the clamping portion 202 is avoided, and support points at two positions can be provided. When actually pulled out, the two support plates are suitable for extending together between the plug body 201 and the shell 300, so that the support plates can be effectively, evenly and stably supported between the plug body 201 and the shell 300, avoiding shaking and tilting of the vent plug 200, resulting in uneven force on the vent plug 200 and easy breakage of the clamping portion 202.

[0046] In some embodiments, Figure 6 As shown, the second plate portion 23 is also formed with an arc-shaped limiting surface 241, and the arc-shaped limiting surface 241 is connected to the support plate. At the connection between the arc-shaped limiting surface 241 and the support plate, the end surface of the support plate is arc-shaped to adapt to the shape of the arc-shaped limiting surface 241, so that the two are smoothly and reliably connected, wherein the arc-shaped limiting surface 241 is suitable for limiting and pressing against the outer peripheral surface of the plug body 201, that is, the shape and size of the arc-shaped limiting surface 241 are adapted to the shape and size of the outer peripheral surface of the plug body 201, thereby, when the extraction device 100 is used to extract the vent plug 200, the arc-shaped limiting surface 241 fits and supports the outer peripheral surface of the plug body 201, and acts together with the support plate on the vent plug 200, providing more stable and comprehensive support, enhancing the supporting force, and ensuring the stability of the vent plug 200 during the extraction process.

[0047] In some embodiments, the connecting portion 22 is constructed to include at least two connecting columns, that is, the connecting portion 22 can be constructed as two, three or even more connecting columns. Setting a plurality of connecting columns can provide more supporting connection points, enhance the supporting force and connection strength between the first plate portion 21 and the second plate portion 23, achieve a more stable and reliable connection between the two, and ensure the supporting force.

[0048] At least two connection posts are spaced apart and respectively connected between the first plate portion 21 and the second plate portion 23 , so that the connection posts can be more stably connected between the first plate portion 21 and the second plate portion 23 to maintain the balance of the extraction seat 2 .

[0049] Specifically, Figure 6 As shown, two connecting columns are provided, which are connected between the first plate portion 21 and the second plate portion 23 at a certain distance from each other, and are both connected to the end positions of the first plate portion 21 and the second plate portion 23, so that the first plate portion 21 and the second plate portion 23 can be supported and connected as a whole, ensuring that the overall structure of the extraction device 100 is stable and the extraction process is carried out smoothly.

[0050] It should be noted that the number of connecting columns is not limited to that described in this embodiment and can be flexibly selected according to actual specific circumstances.

[0051] In some embodiments, the first plate portion 21 is formed with a penetration hole 211 , and the extraction handle 1 is penetrated through the penetration hole 211 .

[0052] Specifically, Figure 6 As shown, a through hole 211 adapted to the extraction handle 1 is provided at the middle position of the first plate portion 21, and the lower end of the extraction handle 1 is penetrated through the through hole 211, so that the extraction handle 1 can be stably and firmly installed on the first plate portion 21, ensuring that the extraction handle 1 will not fall off during the extraction process.

[0053] In some embodiments, Figure 6 As shown, the extraction handle includes a limit end, a middle section and a holding end 12, the upper end is the holding end 12, the lower end is the limit end, and the middle is the middle section, which is used to connect the limit end and the holding end 12, so that the limit end and the holding end 12 are respectively connected to the two ends of the middle section to form a complete extraction handle 1.

[0054] Among them, the middle section is penetrated in the penetration hole 211, and the outer diameter of the limiting end and the outer diameter of the holding end 12 are both larger than the aperture of the penetration hole 211, so that the limiting end and the holding end 12 will not completely penetrate through the penetration hole 211, so that the limiting end is tightly connected with the first plate portion 21 to prevent the extraction handle 1 from being disengaged from the first plate portion 21. The spherical holding portion 122 formed at the holding end 21 is for the convenience of the user to hold and operate the extraction handle 1. In actual operation, the operator can hold the extraction handle 1 through the spherical holding portion 122 of the holding end 21, and then apply force. At this time, the middle section penetrates through the penetration hole 211, and the limiting end is limited to prevent it from being separated from the first plate portion 21, so that the vent plug 200 is pulled out of the housing 300. In some embodiments, the extraction handle 1 includes a connecting end 11 and a holding end 12, the connecting end 11 is connected to the first plate portion 21, and the holding end 12 is formed with a spherical holding portion 122.

[0055] like Figure 6 As shown, the upper end of the extraction handle 1 is the gripping end 12, and the gripping end 12 is formed with a spherical gripping portion 122. The size of the spherical gripping portion 122 conforms to the natural gripping posture of the palm, so that the operator's use experience can be improved, hand fatigue can be reduced, torque can be easily applied, and extraction operation is convenient. The lower end of the extraction handle 1 is the connecting end 11, and the connecting end 11 is penetrated at the penetration hole 211 to be firmly connected with the first plate portion 21, so as to achieve the stability and reliability of the extraction handle 1. In some embodiments, the end of the support portion 25 is formed with an inclined guide surface 251, and the support portion 25 is suitable for extending along the inclined guide surface 251 to between the plug body 201 and the shell 300.

[0056] Specifically, Figure 6 As shown, an inclined guide surface 251 with a gradually decreasing thickness dimension is formed at one end of the support portion 25 away from the arc-shaped limiting surface 241, that is, an end surface with a triangular cross-section is formed. The inclined guide surface 251 can guide the support portion 25 so that the support portion 25 can quickly and smoothly extend between the plug body 201 and the shell 300, thereby reducing the friction between the plug body 201 and the shell 300 and improving the extraction efficiency.

[0057] In some embodiments, the extraction device 100 is made of plastic.

[0058] The extraction device 100 is made of plastic material, which can reduce the weight of the extraction device 100, making the extraction device 100 lighter and more convenient to extract, while ensuring the durability of the extraction device 100. Plastic material is low in cost and easy to process and manufacture, which can reduce the manufacturing cost of the extraction device 100.

[0059] In actual design, the extraction device 100 can be manufactured in an integrated manner by assembly or 3D printing.

[0060] 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 representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] 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 device for removing a vent plug, characterized in that: The vent plug comprises a connected plug body and a clamping portion, wherein the clamping portion is suitable for clamping in a mounting hole of the housing, and the extraction device comprises: Pull out the handle; A pull-out seat, wherein the pull-out seat is formed with an escape space for escaping the plug body, and the pull-out seat is formed with a support portion, wherein the support portion is suitable for extending between the plug body and the shell, and the pull-out handle is connected to a side of the pull-out seat away from the support portion, and the pull-out handle is used to drive the support portion to drive the plug body to pull the clamping portion out of the mounting hole.

2. The vent plug extraction device according to claim 1, characterized in that: The extraction seat includes a first plate portion, a connecting portion and a second plate portion, the connecting portion is connected between the first plate portion and the second plate portion, the first plate portion and the second plate portion are spaced apart and relatively distributed and define the avoidance space, the supporting portion is arranged on the second plate portion, and the extraction handle is connected to a side of the first plate portion facing away from the second plate portion.

3. The vent plug extraction device according to claim 2, characterized in that: The second plate portion is further formed with an escape opening, the escape opening is communicated with the escape space, and the escape opening is used to escape the clamping portion.

4. The vent plug extraction device according to claim 3, characterized in that: The support portion is constructed as two support plates, the two support plates are located on both sides of the avoidance opening, and the two support plates are suitable for extending between the plug body and the shell together.

5. The vent plug extraction device according to claim 4, characterized in that: The second plate portion is further formed with an arc-shaped limiting surface, the arc-shaped limiting surface is connected to the support plate, and the arc-shaped limiting surface is suitable for limiting and pressing against the outer peripheral surface of the plug body.

6. The vent plug extraction device according to claim 2, characterized in that: The connecting portion is configured to include at least two connecting columns, and the at least two connecting columns are spaced apart and respectively connected between the first plate portion and the second plate portion.

7. The vent plug extraction device according to claim 2, characterized in that: The first plate portion is formed with a penetration hole, and the extraction handle is penetrated through the penetration hole.

8. The vent plug extraction device according to claim 7, characterized in that: The extraction handle comprises a limit end, a middle section and a gripping end, wherein the limit end and the gripping end are respectively connected to two ends of the middle section; The middle section is penetrated in the penetration hole, the outer diameter of the limiting end and the outer diameter of the holding end are both larger than the hole diameter of the penetration hole, and the holding end is formed with a spherical holding portion.

9. The vent plug extraction device according to claim 2, characterized in that: The extraction handle comprises a connecting end and a holding end, wherein the connecting end is connected to the first plate portion, and the holding end is formed with a spherical holding portion.

10. The vent plug extraction device according to claim 1, characterized in that: An inclined guide surface is formed at the end of the support portion, and the support portion is suitable for extending between the plug body and the housing along the inclined guide surface.

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