Plugging device

Abstract

The utility model relates to the technical field of automobile air conditioning system detection, in particular to a plugging device. The plugging device is used for plugging the connecting port, the connecting port comprises a connecting seat and a connecting nozzle, the connecting seat is used for being communicated with a pipeline, and the connecting nozzle is communicated with the connecting seat; the plugging device comprises a plugging seat and an abutting piece; a plugging groove is formed in the plugging seat in the first direction, and the plugging groove is used for sealing the connecting nozzle when the connecting nozzle is inserted; the abutting piece is detachably arranged on the plugging base, and when the connecting nozzle is inserted into the plugging groove, the abutting piece abuts against the side, away from the connecting nozzle, of the connecting base. By means of the mode, the plugging base and the connecting port can be relatively fixed only through the single abutting piece so as to continuously seal the connecting nozzle, the abutting piece is detachably arranged on the plugging base, the efficiency of disassembling and assembling the plugging device to the connecting port can be improved, and the problem that the efficiency of plugging the connecting port is low is solved.

Description

Technical Field

[0001] This application relates to the field of automotive air conditioning system testing technology, and in particular to a sealing device. Background Technology

[0002] The automotive air conditioning system is a crucial component of a car. It requires its piping to connect to the vehicle's main piping to function properly; therefore, these piping connections have ports. Before leaving the factory, the automotive air conditioning system undergoes an airtightness test, necessitating the sealing of these connection ports.

[0003] In related technologies, a pressure plate is placed on the connection port to seal the pipeline, and the pressure plate is fixed to the connection port with screws or bolts. Each time the pressure plate is removed or installed, the screws or bolts need to be tightened, which consumes a lot of time, resulting in low efficiency in sealing the connection port and low efficiency in airtightness testing. Utility Model Content

[0004] The embodiments of this application aim to provide a blocking device that can at least improve the problem of low efficiency in blocking connection ports.

[0005] In order to solve the above-mentioned technical problems, the embodiments of this application adopt the following technical solutions:

[0006] This application provides a sealing device for sealing a connection port, the connection port including a connecting seat and a connecting nozzle, the connecting seat being used to communicate with a pipeline, and the connecting nozzle communicating with the connecting seat; the sealing device includes a sealing seat and a supporting member; the sealing seat has a sealing groove along a first direction, the sealing groove being used to seal the connecting nozzle when it is inserted; the supporting member is detachably disposed on the sealing seat, and when the connecting nozzle is inserted into the sealing groove, the supporting member abuts against the side of the connecting seat opposite to the connecting nozzle.

[0007] In some embodiments, the connecting nozzle is cylindrical and the sealing groove is cylindrical. When the connecting nozzle is inserted into the sealing groove, the inner wall of the sealing groove is in sealing contact with the outer peripheral surface of the connecting nozzle.

[0008] In some embodiments, the depth of the sealing groove along the axial direction of the connector is greater than or equal to the length of the connector.

[0009] In some embodiments, when the connector is inserted into the sealing groove, the sealing seat abuts against the side of the connector opposite to the abutment.

[0010] In some embodiments, the connecting seat has a limiting hole along the first direction, and the sealing seat has a limiting post along the first direction. When the connecting nozzle is inserted into the sealing groove, the limiting post is at least partially located in the limiting hole.

[0011] In some embodiments, the sealing seat includes a sealing portion and a connecting portion, the sealing groove is disposed on the sealing portion, the connecting portion is connected to the sealing portion and spaced apart from the sealing groove, the connecting portion has a connecting hole perpendicular to the first direction, and the abutment is inserted through the connecting hole.

[0012] In some embodiments, along the first direction, the projection of the connecting portion is spaced apart from the sealing groove; a limiting groove is provided on the side of the connecting portion adjacent to the sealing groove, and when the connecting nozzle is inserted into the sealing groove, the connecting seat abuts against the inner wall of the limiting groove.

[0013] In some embodiments, the connector includes a first abutment surface parallel to the first direction; the limiting groove extends along the first direction, and the limiting groove includes a second abutment surface parallel to the first direction; when the connector is inserted into the sealing groove, the second abutment surface at least partially abuts against the first abutment surface; wherein both the first abutment surface and the second abutment surface include at least one of a curved surface and a folded surface.

[0014] In some embodiments, along the first direction, the width of the limiting groove is greater than the length of the connecting nozzle.

[0015] In some embodiments, the abutment includes a column and a telescopic member; the column passes through the connecting hole, one end of the column has an enlarged portion for preventing the column from disengaging from the connecting hole in a direction away from the enlarged portion; the telescopic member is telescopically disposed at the other end of the column, the telescopic member is for extending out of the outer peripheral surface of the column to prevent the column from disengaging from the connecting hole in a direction toward the enlarged portion; the telescopic member is also for retracting to be concave to or flush with the outer peripheral surface of the column.

[0016] The sealing device of this application embodiment seals the connecting nozzle through a sealing groove, and a retaining member abuts against the side of the connecting seat opposite to the connecting nozzle, thereby fixing the sealing seat and the connecting port relative to each other to continuously seal the connecting nozzle. Notably, the sealing seat and the connecting port can be fixed relative to each other using only a single retaining member, and the retaining member is detachably mounted on the sealing seat, which improves the efficiency of installing and removing the sealing device from the connecting port and addresses the problem of low efficiency in sealing the connecting port.

[0017] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0018] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0019] Figure 1 This is a schematic diagram of the blocking device and connection port according to an embodiment of this application;

[0020] Figure 2 yes Figure 1 Exploded view of the central sealing device and connection port;

[0021] Figure 3 yes Figure 1 Exploded view of the central sealing device and connection port from another perspective;

[0022] Figure 4 yes Figure 1 Cross-sectional view of the sealing device and connection port.

[0023] The reference numerals in the detailed embodiments are as follows:

[0024] 100. Sealing device;

[0025] 1. Sealing seat; 11. Sealing part; 111. Sealing groove; 112. Limiting post; 12. Connecting part; 121. Connecting hole; 122. Limiting groove; 1221. Second abutment surface;

[0026] 2. Supporting component; 21. Column; 211. Enlarged part; 22. Telescopic component; 23. Button;

[0027] 200. Connection port;

[0028] 201, Connecting seat; 2011, Cavity; 2012, Mounting port; 2013, Limiting hole; 2014, First abutting surface; 202, Connecting nozzle;

[0029] X, the first direction. Detailed Implementation

[0030] To facilitate understanding of this application, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a more detailed account. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them.

[0031] 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0032] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0033] In the description of the embodiments of this application, the terms "first," "second," etc., are used to define components merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0035] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0036] This application provides a sealing device 100 for sealing a connection port 200. The connection port 200 is used to connect to a pipe, and can also be used to connect to another pipe, or to a female connection port connected to another pipe, thereby connecting the two pipes. The female connection port is adapted to the connection port 200.

[0037] In some application scenarios, the pipes of the automotive air conditioning system are equipped with the aforementioned connection port 200. The pipes on the vehicle body are directly connected to the connection port 200, or the pipes on the vehicle body are equipped with the aforementioned connection female port, which is connected to the connection port 200, thereby connecting the pipes of the automotive air conditioning system with the pipes on the vehicle body, so that the automotive air conditioning system can work normally.

[0038] To facilitate the description of the structural features and working principle of the sealing device 100, the structure of the connection port 200 will be described first. Please refer to... Figures 1 to 3 The connection port 200 includes a connector 201 and a connector 202. The connector 201 is used to communicate with a pipe, and the connector 202 communicates with the connector 201. For example, please refer to... Figure 4 The connector 201 has a cavity 2011 and an installation port 2012. The cavity 2011 communicates with the installation port 2012 and the connector 202. The installation port 2012 is used to connect and communicate with a pipe. The connector 202 can be inserted into another pipe or into a female connector, thereby connecting the two pipes.

[0039] For the aforementioned sealing device 100, please refer to Figures 1 to 3 The sealing device 100 includes a sealing seat 1 and a holding member 2.

[0040] The sealing seat 1 is used to seal the connecting nozzle 202. For example, please refer to... Figures 2 to 4 The sealing seat 1 has a sealing groove 111 along the first direction X. The sealing groove 111 is used to seal the connecting nozzle 202 when it is inserted. In some examples, the sealing groove 111 is adapted to the connecting nozzle 202. For example, the connecting nozzle 202 is cylindrical and the sealing groove 111 is cylindrical. When the connecting nozzle 202 is inserted into the sealing groove 111, the inner wall of the sealing groove 111 makes sealing contact with the outer peripheral surface of the connecting nozzle 202, thereby sealing the connecting nozzle 202. In other examples, when the connecting nozzle 202 is inserted into the sealing groove 111, the end face of the connecting nozzle 202 abuts against the bottom surface of the sealing groove 111 along the depth direction, which can also seal the connecting nozzle 202. In still other examples, when the connecting nozzle 202 is inserted into the sealing groove 111, the edge of the sealing groove 111 abuts against the connecting seat 201, and the contact surface surrounds the connecting nozzle 202, which can also seal the connecting nozzle 202.

[0041] The sealing contact between the inner wall of the sealing groove 111 and the outer peripheral surface of the connecting nozzle 202 means that their contact surfaces are tightly fitted, preventing the passage of gas and liquid. When the inner wall of the sealing groove 111 is in sealing contact with the outer peripheral surface of the connecting nozzle 202, a sealing ring, such as a rubber ring or silicone ring, can be fitted onto the connecting nozzle 202 to enhance the sealing effect between the sealing groove 111 and the connecting nozzle 202. Furthermore, when the connecting nozzle 202 is fitted with a sealing ring, the sealing groove 111 can have a clearance fit with the connecting nozzle 202, and the sealing ring seals the gap between them.

[0042] The retaining member 2 is used to prevent the connecting nozzle 202 from disengaging from the sealing seat 1. For example, please refer to... Figures 2 to 4 The abutment 2 is detachably disposed on the sealing seat 1. When the connecting nozzle 202 is inserted into the sealing groove 111, the abutment 2 abuts against the side of the connecting seat 201 opposite to the connecting nozzle 202. In some examples, the sealing seat 1 includes a sealing part 11 and a connecting part 12. The sealing groove 111 is disposed on the sealing part 11, and the connecting part 12 is connected to the sealing part 11 and spaced apart from the sealing groove 111. The connecting part 12 has a connecting hole 121 perpendicular to the first direction X, and the abutment 2 passes through the connecting hole 121. It is understood that the abutment 2 and the sealing part 11 are located on opposite sides of the connecting seat 201, thereby preventing the connecting nozzle 202 from detaching from the sealing seat 1, so as to fix the sealing seat 1 to the connecting port 200 and continuously seal the connecting nozzle 202.

[0043] It should be noted that the connection port 200 is only used to illustrate the structural features of the sealing device 100 and does not limit the application of the sealing device 100. For example, the sealing device 100 can also be used to seal other devices similar to the connection port 200, or other devices with a connection nozzle 202, or other devices with a cylindrical structure similar to the connection nozzle 202. It is only necessary that the device has a cylindrical structure that can be inserted into the sealing groove 111 and sealed by the sealing seat 1, and that the device has at least one surface that abuts against the side of the abutment 2 facing the sealing groove 111.

[0044] In related technologies, the sealing seat 1 (i.e., the pressure plate in the background technology) is fixed to the connection port 200 by screws or bolts. Each time the sealing seat 1 is disassembled and assembled, the screws or bolts need to be tightened, which consumes a lot of time, resulting in low efficiency in sealing the connection port 200 and low efficiency in airtightness testing. However, in the embodiment of this application, the sealing seat 1 and the connection port 200 can be fixed relative to each other by a single abutment 2, and the abutment 2 is detachably set on the sealing seat 1, which helps to improve the efficiency of disassembling and assembling the sealing device 100 to the connection port 200 and improves the problem of low efficiency in sealing the connection port 200.

[0045] In some embodiments, please refer to Figure 4Along the axial direction of the connecting nozzle 202, the depth of the sealing groove 111 is greater than the length of the connecting nozzle 202. This ensures that the end face of the connecting nozzle 202 is spaced apart from the bottom surface of the sealing groove 111 along its depth direction, thus mitigating the problem of the connecting nozzle 202 being too long and unable to be properly inserted into the sealing groove 111. Alternatively, the depth of the sealing groove 111 is equal to the length of the connecting nozzle 202, in which case the end face of the connecting nozzle 202 is in contact with the bottom surface of the sealing groove 111 along its depth direction, which also mitigates the problem of the connecting nozzle 202 being too long and unable to be properly inserted into the sealing groove 111.

[0046] In some embodiments, please refer to Figure 4 When the connector 202 is inserted into the sealing groove 111, the sealing seat 1 abuts against the side of the connector 201 away from the supporting member 2. By the sealing seat 1 abutting against the connector 201, the sealing seat 1, together with the supporting member 2, clamps the connector 201, reducing the stress on the connector 202 and improving the stability of the sealing seat 1 and the supporting member 2 clamping the connector 200.

[0047] In some embodiments, please refer to Figures 1 to 3 The connecting seat 201 has a limiting hole 2013 along the first direction X, and the sealing seat 1 has a limiting post 112 along the first direction X. When the connecting nozzle 202 is inserted into the sealing groove 111, the limiting post 112 is at least partially located in the limiting hole 2013. It is understood that the limiting hole 2013 is spaced from the connecting nozzle 202, and the limiting post 112 is spaced from the sealing groove 111. The limiting post 112 can limit the relative position between the sealing seat 1 and the connecting seat 201 along the direction perpendicular to X. When the connecting nozzle 202 is cylindrical, the limiting post 112 can also prevent the connecting nozzle 202 from rotating within the sealing groove 111. The limiting post 112 can be adapted to the limiting hole 2013. For example, the limiting hole 2013 is cylindrical, and the limiting post 112 is also cylindrical. The outer diameter of the limiting post 112 is equal to the inner diameter of the limiting hole 2013, thereby improving the limiting accuracy.

[0048] In some embodiments, please refer to Figures 1 to 3 Along the first direction X, the projection of the connecting portion 12 is spaced apart from the sealing groove 111; a limiting groove 122 is provided on the side of the connecting portion 12 adjacent to the sealing groove 111. When the connecting nozzle 202 is inserted into the sealing groove 111, the connecting seat 201 abuts against the inner wall of the limiting groove 122. By having the connecting seat 201 abut against the inner wall of the limiting groove 122, the stability of the sealing seat 1 and the holding member 2 in clamping the connecting port 200 can be further improved.

[0049] In some embodiments, please refer to Figures 1 to 3The connecting seat 201 includes a first abutting surface 2014 parallel to the first direction X; the limiting groove 122 extends along the first direction X and includes a second abutting surface 1221 parallel to the first direction X. When the connecting nozzle 202 is inserted into the sealing groove 111, the second abutting surface 1221 at least partially abuts against the first abutting surface 2014; wherein, both the first abutting surface 2014 and the second abutting surface 1221 include at least one of a curved surface and a folded surface. The curved surface can be an arc surface or an irregular curved surface. Taking the first abutment surface 2014 and the second abutment surface 1221 as arc surfaces as an example, when the second abutment surface 1221 is at least partially in contact with the first abutment surface 2014, the limiting groove 122 can not only limit the connecting seat 201 along the direction in which the connecting part 12 and the connecting seat 201 are arranged, but also along the direction perpendicular to the direction in which the connecting part 12 and the connecting seat 201 are arranged and the direction perpendicular to the first direction X, further improving the stability of the sealing seat 1 in cooperating with the abutment member 2 to clamp the connecting port 200. It can be understood that the first abutment surface 2014 and the second abutment surface 1221 are at least partially adapted to each other. When both the first abutment surface 2014 and the second abutment surface 1221 are folded surfaces or both include folded surfaces and curved surfaces, the above-mentioned limiting effect is also achieved.

[0050] In some embodiments, please refer to Figure 4 Along the first direction X, the width of the limiting groove 122 is greater than the length of the connecting nozzle 202. When installing the sealing seat 1 on the connecting port 200, the first abutting surface 2014 can be made to contact the second abutting surface 1221 first, and then the sealing seat 1 can be moved relative to the connecting port 200 along the first direction X, so that the connecting nozzle 202 can be accurately inserted into the sealing groove 111, which helps to improve the efficiency of installing the sealing device 100 on the connecting port 200.

[0051] For the aforementioned abutment 2, please refer to Figures 1 to 3The supporting member 2 includes a column 21 and a telescopic member 22. The column 21 passes through the connecting hole 121, and one end of the column 21 has an enlarged portion 211, which prevents the column 21 from disengaging from the connecting hole 121 in a direction away from the enlarged portion 211. The telescopic member 22 is telescopically disposed at the other end of the column 21. The telescopic member 22 extends out of the outer peripheral surface of the column 21 to prevent the column 21 from disengaging from the connecting hole 121 in a direction toward the enlarged portion 211. The telescopic member 22 is also used to retract to be concave to or flush with the outer peripheral surface of the column 21. For example, the telescopic member 22 is a glass ball nut. The column 21 has a threaded hole opened inward on its outer peripheral surface, and the glass ball nut is disposed in the threaded hole, so that the glass ball of the glass ball nut can extend out of the outer peripheral surface of the column 21, or retract to be concave to or flush with the outer peripheral surface of the column 21. It should be noted that the glass bead is usually spherical, and the height of its protrusion from the outer circumference of the column 21 is usually less than the radius of the glass bead. Therefore, when the glass bead contacts the edge of the connecting hole 121, applying a force parallel to the axial direction of the connecting hole 121 to the column 21 forces the glass bead back into the column 21. This allows the retaining member 2 to be quickly inserted into and removed from the connecting hole 121, improving the efficiency of installing and removing the retaining member 2 from the sealing seat 1. It is understood that the aforementioned force is one that can be easily applied by the operator and is greater than the weight of the retaining member 2, typically more than 10 times the weight of the retaining member 2, for example, 5N or 10N. Optionally, the column 21 is cylindrical.

[0052] In some other embodiments, please refer to Figure 3 The supporting member 2 also includes a button 23, which is movably disposed on the column 21 and is connected to the telescopic member 22. When the button 23 is pressed, the button 23 drives the telescopic member 22 to retract to be concave to or flush with the outer peripheral surface of the column 21. When the button 23 is released, the telescopic member 22 extends out of the outer peripheral surface of the column 21.

[0053] The sealing device 100 of this embodiment seals the connecting nozzle 202 through the sealing groove 111, and the abutment 2 abuts against the side of the connecting seat 201 opposite to the connecting nozzle 202, thereby fixing the sealing seat 1 and the connecting port 200 relative to each other to continuously seal the connecting nozzle 202. Only a single abutment 2 is needed to fix the sealing seat 1 and the connecting port 200 relative to each other, and the abutment 2 is detachably disposed on the sealing seat 1, which helps improve the efficiency of installing and removing the sealing device 100 from the connecting port 200 and improves the problem of low sealing efficiency of the connecting port 200. The limiting post 112 can limit the relative position between the sealing seat 1 and the connecting seat 201 along the direction perpendicular to the first direction X. When the connecting nozzle 202 is cylindrical, the limiting post 112 can also prevent the connecting nozzle 202 from rotating within the sealing groove 111. When the second abutment surface 1221 is in contact with the first abutment surface 2014, it can limit the connecting seat 201 in two directions, improving the stability of the sealing seat 1 and the abutment 2 in clamping the connecting port 200. The telescopic member 22 prevents the column 21 from disengaging from the connecting hole 121, which helps to improve the efficiency of the abutment 2 in disassembling and assembling the sealing seat 1.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this application as described above, which are not provided in detail for the sake of brevity; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and 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.

Claims

1. A sealing device, characterized in that, For sealing a connection port, the connection port includes a connector and a connector nozzle, the connector being for communicating with a pipe, and the connector nozzle communicating with the connector; the sealing device includes: The sealing seat has a sealing groove along a first direction, the sealing groove being used to seal the connecting nozzle when the connecting nozzle is inserted; A retaining member is detachably disposed on the sealing seat. When the connecting nozzle is inserted into the sealing groove, the retaining member abuts against the side of the connecting seat opposite to the connecting nozzle.

2. The sealing device according to claim 1, characterized in that, The connecting nozzle is cylindrical, and the sealing groove is cylindrical. When the connecting nozzle is inserted into the sealing groove, the inner wall of the sealing groove is in sealing contact with the outer circumferential surface of the connecting nozzle.

3. The sealing device according to claim 1, characterized in that, Along the axial direction of the connector, the depth of the sealing groove is greater than or equal to the length of the connector.

4. The sealing device according to claim 1, characterized in that, When the connector is inserted into the sealing groove, the sealing seat abuts against the side of the connector away from the abutting member.

5. The sealing device according to claim 1, characterized in that, The connecting seat has a limiting hole along the first direction, and the sealing seat has a limiting post along the first direction. When the connecting nozzle is inserted into the sealing groove, the limiting post is at least partially located in the limiting hole.

6. The sealing device according to any one of claims 1 to 5, characterized in that, The sealing seat includes a sealing part and a connecting part. The sealing groove is disposed on the sealing part. The connecting part is connected to the sealing part and spaced apart from the sealing groove. The connecting part has a connecting hole perpendicular to the first direction. The abutment is inserted through the connecting hole.

7. The sealing device according to claim 6, characterized in that, Along the first direction, the projection of the connecting portion is spaced apart from the sealing groove; A limiting groove is provided on the side of the connecting part adjacent to the sealing groove. When the connecting nozzle is inserted into the sealing groove, the connecting seat abuts against the inner wall of the limiting groove.

8. The sealing device according to claim 7, characterized in that, The connecting seat includes a first abutting surface parallel to the first direction; The limiting groove extends along the first direction, and the limiting groove includes a second abutting surface parallel to the first direction. When the connecting nozzle is inserted into the sealing groove, the second abutting surface at least partially fits against the first abutting surface. The first abutting surface and the second abutting surface each include at least one of a curved surface and a folded surface.

9. The sealing device according to claim 8, characterized in that, Along the first direction, the width of the limiting groove is greater than the length of the connecting nozzle.

10. The sealing device according to claim 6, characterized in that, The abutment includes: A column is inserted through the connecting hole, and one end of the column has an enlarged portion, which is used to prevent the column from dislodging from the connecting hole in a direction away from the enlarged portion; A telescopic member is telescopically disposed at the other end of the column. The telescopic member extends out of the outer peripheral surface of the column to prevent the column from disengaging from the connecting hole in the direction toward the enlarged portion. The telescopic member is also retracted to be concave to or flush with the outer peripheral surface of the column.

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