High-protection air tightness detection device and system thereof

Abstract

The invention discloses a high-protection air tightness detection device and system, the high-protection air tightness detection device comprises two joint assemblies and a lining assembly, each joint assembly is provided with a connecting hole in a penetrating manner along the front-back direction, one section of each connecting hole is used for one-to-one corresponding insertion of a front pipe section and a rear pipe section inserted into a main body, and the other section of each connecting hole is used for one-to-one corresponding insertion of a front pipe section and a rear pipe section inserted into the main body; the other section of one connecting hole is used for being communicated and connected with a gas measuring device, and the other section of the other connecting hole is closed; the lining assembly is inserted into the front pipe section and / or the rear pipe section of the insertion body and supports the insertion body outwards. The lining assembly is inserted into the insertion main body in advance and can be matched with the shape and the size in the pipe of the insertion main body, external supporting of the insertion main body is achieved, and therefore when the insertion main body is sleeved with the connecting hole of the connector assembly and is continuously clamped, the insertion main body can be tightly clamped; the connector assembly is effectively prevented from being inserted into the main body to be deformed and even broken, and finally the reliability of air tightness detection is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of production and assembly of endoscopes, and in particular to a high-protection airtightness detection device and a system thereof. Background Art

[0002] An endoscope is a common medical optical instrument that can enter the body through natural orifices such as the mouth, or artificial channels such as incisions. The image sensor, optical lens and other components installed at the front end of the endoscope can then be used to directly observe the lesions, making it easier for doctors to observe and diagnose.

[0003] An endoscope usually includes an insertion body that can be inserted into the body. The insertion body usually consists of a tube body with a channel and a hose wrapped around the outside of the tube body. In addition, the insertion body of some endoscopes includes an active bending section and a passive bending section. The channel of the tube body is used to install parts such as cables and traction ropes, and to insert diagnostic and treatment instruments, while the hose is used to isolate body fluids to prevent body fluids from entering the channel and corroding internal parts. Therefore, at least the outer wall of the insertion body cannot be damaged or leaky.

[0004] In the existing production and assembly process of the insert body, it is generally necessary to conduct a sealing test on the insert body at least before leaving the factory. For example, in the prior art disclosed in patent CN220104427U, there are the following problems: First, the structure is complex and the cost is high. Second, only the finished endoscope can be inspected, and the insert body cannot be inspected alone. At this time, if it is detected that the insert body is damaged or has a hole, it will take a lot of time to repair and replace it, and other parts and consumables may be scrapped. Third, the detection device cannot be adapted to insert bodies of different specifications. Especially when it is not adapted, the detection device is likely to cause structural damage to the insert body, such as breaking the insert body, reducing the reliability of the detection. Summary of the invention

[0005] The main purpose of the present invention is to propose a high-protection airtightness detection device and its system, aiming to solve the problem that traditional technology can only perform airtightness detection on finished endoscopes and the detection process is likely to cause damage to the insertion body.

[0006] To achieve the above-mentioned purpose, the present invention proposes a high-protection airtightness detection device, which is used for the insertion body of an endoscope, and the high-protection airtightness detection device comprises:

[0007] Two joint assemblies, each of which is provided with a connecting hole in the front-to-back direction, one section of the two connecting holes is used for correspondingly plugging the front pipe section and the rear pipe section of the insertion body, the other section of one connecting hole is used for communicating with the gas measuring device, and the other section of the other connecting hole is closed; and,

[0008] At least one lining assembly is used to be inserted into the front pipe section and / or the rear pipe section of the insertion body and to support the insertion body outward.

[0009] Optionally, the outer diameter of at least the portion of the lining assembly that is inserted into the insertion body can be adjusted.

[0010] Optionally, the lining assembly comprises:

[0011] a rigid pipe, at least a portion of which is inserted into the insertion body; and

[0012] The elastic member is sleeved between the outer side of the rigid tube and the inner side of the insertion body, and is limited along the front-to-back direction at the outer side of the rigid tube and / or the inner side of the insertion body. When subjected to a driving force along the front-to-back direction, the elastic member has an expanded state of being squeezed to an expanded deformation, and / or a contracted state of being stretched to a contracted deformation, so as to achieve an adjustable outer diameter of the elastic member.

[0013] Optionally, the rigid tube comprises an insertion tube section inserted into the insertion body, and an extension tube section extending outward from the insertion body, and the elastic member is at least sleeved on the insertion tube section;

[0014] A stop protrusion is protruded laterally from a section of the inserted tube section away from the extended tube section, and the stop protrusion is in stop contact with the elastic member.

[0015] Optionally, the rigid tube comprises an insertion tube section inserted into the insertion body, and an extension tube section extending outward from the insertion body, and the elastic member is at least sleeved on the insertion tube section;

[0016] The lining assembly also includes an adjusting member, which is movably installed at the protruding pipe section along the front-rear direction, and during the movement, the adjusting member applies a driving force along the front-rear direction to the elastic member.

[0017] Optionally, the adjusting member and the joint assembly are independently arranged; or,

[0018] At least some of the components of the joint assembly constitute the adjusting member.

[0019] Optionally, the extended pipe section is provided with a first external thread;

[0020] The adjusting member includes a first nut, which is sleeved on the protruding pipe section and has a first internal thread corresponding to the first external thread. During the threaded connection between the first nut and the protruding pipe section, the first nut drives the elastic member to move to the expanded state or to the contracted state.

[0021] Optionally, the joint assembly comprises:

[0022] The joint body comprises a flange-shaped body and a first boss protruding from one side of the body in the front-back direction, the connecting hole sequentially passes through the body and the first boss, a section of the first boss close to the body is provided with a second external thread, and a section of the first boss away from the body is provided with a plurality of slots spaced apart along the circumference of the connecting hole, so as to form a plurality of spring structures at the free section of the first boss; and,

[0023] The second nut is provided with a through hole in the front-to-back direction corresponding to the connecting hole, and the through hole includes a first hole section, a second hole section and a third hole section formed with a second internal thread, and the third hole section is suitable for the outer shape setting of the insertion body at the position, and the aperture of the second hole section is reduced in the direction away from the first hole section. The through hole is sleeved on the outer side of the first protrusion, and the second internal thread is connected to the second external thread, so that during the screw connection process, it has a tightening stroke that drives the second hole section to squeeze each of the spring leaf structures to move towards each other, and a releasing stroke that drives the second hole section to give way to allow each of the spring leaf structures to move and reset.

[0024] Optionally, during the threaded connection between the second internal thread and the second external thread, the second hole section may be driven to be connected with the elastic member or the adjusting member.

[0025] Optionally, the second nut is provided with an abutment protrusion at least at the third hole section in the direction of the first hole section, and during the threaded connection of the second internal thread and the second external thread, the abutment protrusion can be driven to connect with the elastic member or the adjusting member.

[0026] Optionally, the extended pipe section is provided with a first external thread;

[0027] The third hole section is provided with a first internal thread, and the second nut constitutes the adjusting member, which is threadedly connected to the protruding pipe section so as to drive the elastic member to move to the expanded state or the contracted state during the threaded connection process.

[0028] Optionally, the lining assembly further includes a gasket, which is made of a rigid material and connected between the adjusting member and the elastic member.

[0029] Optionally, the gasket comprises a first circle segment and a second circle segment connected in sequence along the front-rear direction, the outer diameter of the second circle segment is greater than the outer diameter of the first circle segment, so as to form an abutment surface between the first circle segment and the second circle segment;

[0030] The first ring segment is sleeved on the outside of the rigid tube and inserted into the insertion body, and the end of the first ring segment away from the second ring segment abuts against the elastic member;

[0031] The second ring section is sleeved on the outer side of the rigid pipe and extends out of the insertion body, and the abutment surface is used to stop and limit the end of the insertion body.

[0032] In addition, to achieve the above-mentioned purpose, the present invention also provides a high-protection airtightness detection system, including a gas measuring device and the high-protection airtightness detection device as described above.

[0033] In the technical solution provided by the present invention, two joint assemblies are sealed and connected to the front and rear sections of the insertion body in a one-to-one correspondence, and because the connection hole of one joint assembly is connected to the gas measuring device, the connection hole of the other joint assembly remains closed, and can form a complete air tightness detection system together with the gas measuring device. Since the two joint assemblies are independently arranged, the entire air tightness detection process is not limited by the processing and assembly state of the insertion body, and the air tightness detection can be performed on the insertion body itself separately, and the air tightness detection can also be performed on the semi-finished endoscope after partial assembly, so as to realize the sealing detection of the insertion body in a variety of processing and assembly states; the lining assembly is pre-inserted inside the insertion body, and can be adapted to the inner shape and size of the tube of the insertion body, so as to realize the external support of the insertion body, so that when the connection hole of the joint assembly is sleeved on the outside of the insertion body and continuously clamped, it is effectively prevented that the joint assembly clamps the insertion body and even breaks it, which ultimately helps to improve the reliability of air tightness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0035] Figure 1 A three-dimensional schematic diagram of a first embodiment of a high-protection airtightness detection device provided by the present invention;

[0036] Figure 2 for Figure 1 A schematic diagram of the main structure of the first joint assembly;

[0037] Figure 3 for Figure 1 Schematic diagram of the main structure of the middle lining assembly;

[0038] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of the first joint component;

[0039] Figure 5 for Figure 1 A schematic diagram of the cross-sectional structure of the second joint assembly;

[0040] Figure 6 A schematic cross-sectional structure diagram of a first joint assembly in a second embodiment of a high-protection airtightness detection device provided by the present invention;

[0041] Figure 7 This is a schematic diagram of the cross-sectional structure at the first joint assembly in the third embodiment of the high-protection airtightness detection device provided by the present invention.

[0042] Description of Figure Numbers:

[0043] 100a first joint assembly; 100b second joint assembly; 110 joint body; 110a connecting hole; 111 body; 112 first boss; 112a second external thread; 112b slot; 112c spring sheet structure; 113 second boss; 113a step section; 114 third boss; 120 second nut; 121 through hole; 121a first hole section; 121b second hole section; 121c third hole section; 121d second internal thread; 122 Abutment protrusion; 130 elastic sealing ring; 140 connecting pipe body; 200 lining assembly; 210 rigid pipe fitting; 211 inserted pipe section; 211a stop protrusion; 212 extended pipe section; 212a first external thread; 220 elastic member; 230 adjusting member; 230a first internal thread; 231 first nut; 240 washer; 241 first circle section; 242 second circle section; 243 abutment surface; 300 inserted main body; 311 front pipe section; 321 rear pipe section.

[0044] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] See also Figures 1 to 7 The present invention provides a high-protection air-tightness detection system. It can be understood that the high-protection air-tightness detection system is mainly used for high-protection air-tightness detection of the insertion body 300 of the endoscope.

[0049] An endoscope generally includes an operating body and an insertion body 300. The insertion body 300 is the part that is mainly used to be inserted into the patient's body during surgery. The front end of the insertion body 300 is preset with electronic components such as imaging devices and lighting devices. When inserted into the patient's body, with the assistance of the lighting device, the imaging device can capture images of the lesions in the patient's body. In addition, the insertion body 300 is provided with a working channel along its length, that is, in the front and back directions. The working channel can be used for surgical forceps, stone removal baskets and other diagnostic and treatment instruments to be inserted, so that the lesions in the patient's body can be diagnosed and treated. Of course, the working channel or the channel structure additionally opened in the insertion body 300 can also allow liquids to circulate inside and outside. The operating body is the part that is mainly used for medical staff to hold and operate during surgery.

[0050] The existing insertion body 300 can generally be configured to include an active bending section. Correspondingly, the endoscope also includes a traction mechanism, which can generally include a reel and a traction line. The front end of the traction line is connected to one side of the active bending section, and the rear end of the traction line is connected to the reel, and the winding process and the unwinding process can be realized under the winding action of the reel. When the winding process is performed, the traction line drives the active bending section to bend laterally; when the unwinding process is performed, the traction line releases the active bending section to reset. In addition, the insertion body 300 can also include a passive bending section according to actual needs. The passive bending section is generally connected to the rear end of the active bending section, and can be driven to adaptively bend and deform when the active bending section bends.

[0051] The above-mentioned insertion body 300 generally includes a tube body and a hose coated on the outside of the tube body. The hose is generally coated on the outside of the active bending section, but not on the outside of the passive bending section. The object to be tested for high-protection airtightness detection in this embodiment can be the hose itself, or the entire insertion body 300 coated with the hose, or a module structure including the insertion body 300, etc. However, for ease of understanding, the following description will take the insertion body 300 as an example of the object to be tested. Based on this, the front tube section 311 of the insertion body 300 in the following refers to the front section of the active bending section coated with the hose; the rear tube section 321 refers to the rear section of the active bending section coated with the hose and the passive bending section.

[0052] The high-protection air-tightness detection system provided by the present invention comprises an air measuring device and a high-protection air-tightness detection device.

[0053] The gas measuring device at least includes a gas source device for providing the detection gas, and a sensor device which may be, but is not limited to, used for detecting parameters such as gas flow and gas pressure.

[0054] The high-protection airtightness detection device includes two joint components and at least one liner component 200 .

[0055] Each joint assembly is provided with a connecting hole 110a along the front-to-back direction, one section of the two connecting holes 110a is used for one-to-one connection with the front pipe section 311 and the rear pipe section 321 of the insertion body 300, the other section of one connecting hole 110a is used to communicate with the gas measuring device, and the other section of the other connecting hole 110a is closed; the lining assembly 200 is used to be inserted into the front pipe section 311 and / or the rear pipe section 321 of the insertion body 300, and to support the insertion body 300 outward.

[0056] In the technical solution provided by the present invention, two joint assemblies are sealed and connected to the front and rear sections of the insertion body 300 in a one-to-one correspondence, and because the connection hole 110a of one joint assembly is connected to the gas measuring device, the connection hole 110a of the other joint assembly remains closed, and can form a complete air tightness detection system together with the gas measuring device. Since the two joint assemblies are independently arranged, the entire air tightness detection process can be not limited by the processing and assembly state of the insertion body 300, and the air tightness detection can be performed on the insertion body 300 itself separately, and the air tightness detection can also be performed on the semi-finished endoscope after partial assembly, so as to realize the sealing detection of the insertion body 300 in various processing and assembly states; the lining assembly 200 is pre-inserted inside the insertion body 300, and can be adapted to the shape and size of the tube inside the insertion body 300, so as to realize the external support for the insertion body 300, so that when the connection hole 110a of the joint assembly is sleeved on the outside of the insertion body 300 and continuously clamped, it is effectively prevented that the joint assembly clamps the insertion body 300 and deforms or even breaks it, which ultimately helps to improve the reliability of air tightness detection.

[0057] About the connector assembly:

[0058] For ease of understanding, in the following embodiments, the two joint assemblies are respectively the first joint assembly 100a and the second joint assembly 100b. Among them, the rear end of the connecting hole 110a of the first joint assembly 100a is inserted and connected with the front pipe section 311 of the insertion body 300; the front end of the connecting hole 110a of the second joint assembly 100b is inserted and connected with the rear pipe section 321 of the insertion body 300. And among them, at least the front end of the connecting hole 110a of the first joint assembly 100a is used to connect with the gas measuring device. The rear end of the connecting hole 110a of the second joint assembly 100b can be closed by its own structural design, for example, the connecting hole 110a is set as a blind hole structure with a rear end seal; of course, it can also be closed by the cooperation of external components, such as blocking by a plunger, connecting with another gas port of the gas measuring device, etc.

[0059] Whether it is the first joint assembly 100a or the second joint assembly 100b, at least part of the hole section of its connection hole 110a needs to be sealed and connected with the corresponding pipe section of the insert body 300. Therefore, in one embodiment, the connection hole 110a of the first joint assembly 100a and / or the second joint assembly 100b includes a plug-in hole section for plugging with the insert body 300, and the size of the hole diameter of at least part of the hole section of the plug-in hole section can be movably adjusted. In this way, the connection hole 110a can be adapted to be plugged in with insert bodies 300 of different outer diameters, so that the high-protection airtightness detection device can be adapted to perform high-protection airtightness detection on insert bodies 300 of different sizes and different assembly states, which helps to increase the versatility of the high-protection airtightness detection device.

[0060] There are many ways to achieve the movable adjustment of the aperture of the connecting hole 110a. For example, in one embodiment, the connecting hole 110a can be set as a stepped hole or a conical hole with a gradually increasing inner diameter. By adjusting the insertion depth between the insertion body 300 and the connecting hole 110a, a sealed connection between the connecting hole 110a and the plug-in pipe fittings with different outer diameters can be achieved.

[0061] Alternatively, in one embodiment, the portion of the connector assembly forming the connecting hole 110a may be made of an elastic material, and before the plug-in operation with the insertion body 300 is performed, the connecting hole 110a may first be expanded to a position suitable for the insertion of the insertion body 300 by other means; when plugged into place, the external force applied to the portion is removed, so that the connecting hole 110a fits tightly against the outer wall of the insertion body 300.

[0062] Please combine Figures 2 to 7 In one embodiment, the first joint assembly 100a and the second joint assembly 100b may both include a joint body 110 and a second nut 120. The joint body 110 includes a flange-shaped body 111 and a first boss 112 protruding from one side of the body 111 in the front-to-back direction. The connecting hole 110a sequentially penetrates the body 111 and the first boss 112. A section of the first boss 112 close to the body 111 is provided with a second external thread 112a. A section of the first boss 112 away from the body 111 is provided with a plurality of slots 112b spaced apart along the circumference of the connecting hole 110a, so as to form a plurality of spring structures 112c at the free section of the first boss 112. The second nut 120 is penetrated with a through hole 121 in the front-to-back direction. The through hole 121 It includes a first hole segment 121a formed with a second internal thread 121d, and a remaining second hole segment 121b. In the direction away from the first hole segment 121a, the aperture of the second hole segment 121b is reduced. The through hole 121 is sleeved on the outer side of the first boss 112, and the first hole segment 121a is connected to the second external thread 112a, so that during the screw connection process, it has a tightening stroke of driving the second hole segment 121b to squeeze the elastic leaf structures 112c to move towards each other, and a releasing stroke of driving the second hole segment 121b to give way to allow the elastic leaf structures 112c to move back to their original positions.

[0063] On the one hand, the flange-shaped main body 111 helps the user to manually hold it, and when necessary, it helps to clamp the plate in a mounting hole of a corresponding shape; on the other hand, the main body 111 can be formed with a stop surface facing the first boss 112, and the stop surface can limit the second nut 120 when the second nut 120 is screwed close.

[0064] The body 111 and the first protruding column 112 may be integrally formed, or may be separately formed and then connected in a detachable or non-detachable manner.

[0065] When the first convex column 112 is provided with a plurality of slots 112b and the aforementioned plurality of spring structures 112c are formed, the spring structure 112c has a mounting end and a movable end which are arranged opposite to each other. Under the action of external force, the spring structure 112c is subjected to force so that the movable end can flip around the mounting end along the radial inner side of the connecting hole 110a, and flip along the radial outer side of the connecting hole 110a. Among them, when the movable end flips along the radial inner side of the connecting hole 110a, the aperture of the hole section of the connecting hole 110a enclosed and defined by each spring structure 112c is reduced, and can be adapted to the insertion body 300 with a smaller outer diameter; conversely, when the movable end flips along the radial outer side of the connecting hole 110a, the aperture of the hole section of the connecting hole 110a enclosed and defined by each spring structure 112c is increased, and can be adapted to the insertion body 300 with a larger outer diameter.

[0066] In this embodiment, the flipping movement of each of the elastic structures 112c is driven by the second nut 120. The first hole section 121a of the second nut 120 is provided with a second internal thread 121d, which is threadedly connected with the second external thread 112a of the first boss 112, and can drive the second nut 120 to move relative to the first boss 112 toward the body 111, and move away from the body 111. Since the aperture of the second hole segment 121b is reduced, that is, when the second nut 120 moves toward the body 111 relative to the first boss 112, the smaller aperture of the second hole segment 121b gradually squeezes each spring structure 112c, driving each spring structure 112c to flip toward the radial inner side of the connecting hole 110a to perform a tightening stroke; conversely, when the second nut 120 moves away from the body 111 relative to the first boss 112, the smaller aperture of the second hole segment 121b gradually moves out and away from each spring structure 112c, and the squeezing force applied to each spring structure 112c is cancelled, so that each spring structure 112c can flip and reset toward the radial outer side of the connecting hole 110a to perform a releasing stroke.

[0067] In view of the above, at least the portion of the first protrusion 112 constituting each spring sheet structure 112c can be directly made of elastic material, such as a rubber material with a certain structural strength, so that when performing a tightening stroke, each spring sheet structure 112c can be flexibly pressed into the main body 300.

[0068] Alternatively, the first convex column 112 is made of a rigid material, such as a metal material, and has sufficient structural strength. Furthermore, the joint assembly also includes an elastic sealing ring 130, which is fixed in the connection hole 110a and arranged at least corresponding to the position of each spring structure 112c. The elastic sealing ring 130 can convert the rigid pressing of each spring structure 112c into elastic pressing of the insert body 300, thereby improving the structural protection strength of the insert body 300.

[0069] Then, the elastic sealing ring 130 extends in a direction away from the first protruding column 112 until it partially extends out of the connecting hole 110a. In this way, when the second nut 120 performs a tightening stroke, the elastic sealing ring 130 extending out of the connecting hole 110a is squeezed and expanded and deformed, and the hole section in the second hole section 121b that is not sleeved with the first protruding column 112 can be further elastically squeezed, which is equivalent to a secondary seal for the plug-in connection between the joint assembly and the insert body 300. And conversely, the part of the elastic sealing ring 130 that appropriately extends out of the connecting hole 110a can also release excessive squeezing force through deformation, avoiding the elastic sealing ring 130 from being excessively squeezed and damaged. In addition, the appropriate extension of the elastic sealing ring 130 can provide transitional support between the pipe section in the insert body 300 that is plugged into the connecting hole 110a and the remaining pipe section, avoiding the generation of a pressure crack at the end face of the first protruding column 112 when the insert body 300 is bent relative to the first protruding column 112.

[0070] The opening of the second hole section 121b away from the first hole section 121a is at least larger than the outer diameter of the front tube section 311 of the insertion body 300, so as to facilitate the front tube section 311 of the insertion body 300 to be inserted into the connecting hole 110a more smoothly through the second hole section 121b in sequence. In addition, the aperture of the opening of the second hole section 121b is not less than the inner diameter of the elastic sealing ring 130, and is not larger than the outer diameter of the elastic sealing ring 130. That is, the orthographic projection of the opening of the second hole section 121b in the front-to-back and upward direction falls within the orthographic projection area of ​​the elastic sealing ring 130, and the elastic sealing ring 130 can be used to elastically abut the second nut 120 in the front-to-back and upward direction, and the opening of the second hole section 121b can be sealed and covered.

[0071] In the above, in the direction in which the first convex column 112 is away from the body 111, the aperture of the second hole segment 121b is set to decrease, which can be a step-like decrease, or a straight inclined surface that gradually decreases, or the hole wall of the second hole segment 121b is set in a concave arc shape, that is, it gradually decreases in an arc shape. The arc surface can avoid the formation of sharp corners and other structures, and avoid stress concentration on the elastic sealing ring 130, the spring structure 112c, etc.

[0072] Of course, correspondingly, the thickness of the spring sheet structure 112c can be gradually reduced in the direction along the first convex column 112 away from the body 111, that is, it is in the shape of a gradually thinning sheet. Alternatively, the spring sheet structure 112c can also be adapted to the hole wall of the concave arc-shaped second hole section 121b, and its outer surface is set to be convex arc-shaped.

[0073] In the first joint assembly 100a, in addition to the above-mentioned main body 111, the first boss 112 and the second nut 120, a second boss 113 is convexly provided on the side of the joint body 110 facing away from the first boss 112, and the connecting hole 110a passes through the second boss 113; the high-protection airtightness detection device also includes a connecting tube body 140, and the connecting tube body 140 connects the gas measuring device and the first boss 112. The connecting tube body 140 can specifically be a hard tube body or an elastic tube body, which is adapted to the structural setting of the gas measuring device. Of course, when the structure is adapted, the second boss 113 can also be directly inserted into the socket in the gas measuring device to achieve the docking of the gas measuring device and the first joint assembly 100a.

[0074] Specifically, the second boss 113 is arranged in a multi-stepped shape, that is, a pagoda plug. And in the direction close to the body 111, the outer diameter of each step section 113a of the second boss 113 is gradually increased. In this way, each step section 113a can form a different outer diameter to adapt to the connecting tube body 140 with different inner diameters. And different step sections 113a can form different outer diameter ranges. The step surface formed between every two adjacent step sections 113a can stop the connecting tube body 140 in the front and back directions, increase the connection strength between the connecting tube body 140 and the second boss 113, and prevent the connecting tube body 140 from slipping out of the second boss 113.

[0075] In the second joint assembly 100b, a third protrusion 114 is protruded on the side of the joint body 110 facing away from the first protrusion 112, and the connection hole 110a extends to the third protrusion 114 and does not penetrate the third protrusion 114. The connection hole 110a does not penetrate the third protrusion 114, that is, the other opening of the connection hole 110a of the second joint assembly 100b is naturally sealed by the third protrusion 114.

[0076] In actual application, the length of the hole section of the connection hole 110a formed in the third protruding column 114 is not less than the length of the passive bending section. In this way, when the rear tube section 321 of the insertion body 300 is inserted into the connection hole 110a of the third protruding column 114, the spring structure 112c can elastically clamp the rear section of the active bending section covered with the hose; the third protruding column 114 can accommodate the passive bending section to prevent the passive bending section from being squeezed and bent in the third protruding column 114 and causing structural damage.

[0077] And / or the hole diameter of the connecting hole 110a formed in the third protrusion 114 is not less than the outer diameter of the passive bending section. In this way, on the one hand, it is helpful to smoothly insert the rear tube section 321 of the insertion body 300, and on the other hand, when the passive bending section is bent, sufficient radial space can be reserved for the bending deformation of the passive bending section.

[0078] Based on any of the above embodiments, the first connector assembly 100a and the second connector assembly 100b are independently arranged, that is, they can be defined as the first connector assembly 100a and the second connector assembly 100b are not related to each other in assembly and disassembly, and thus will not interfere with each other. The relative position of the first connector assembly 100a and the second connector assembly 100b includes a relative position and a relative orientation.

[0079] When the relative positions of the first connector assembly 100a and the second connector assembly 100b are flexibly adjustable, at least the distance between the connecting hole 110a of the first connector assembly 100a and the connecting hole 110a of the second connector assembly 100b is adjustable, thereby fixing the insertion body 300 of different lengths.

[0080] When the relative orientation of the first joint assembly 100a and the second joint assembly 100b can be flexibly adjusted, the insertion body 300 is allowed to bend and deform to a certain extent during the high-protection airtightness detection process, further improving the practicality of the high-protection airtightness detection device. At this time, in the direction of approaching each other in the front-to-back direction, the connection hole 110a / second hole section 121b in the first joint assembly 100a and / or the second joint assembly 100b can be set to expand, reserving a certain inclination angle to provide lateral support for the bent and deformed insertion body 300.

[0081] Based on one or more of the above embodiments, further, regarding the lining assembly 200:

[0082] In one design, the outer diameter of the liner assembly 200 can be set to be constant, so that the shapes and sizes of the liner assembly 200 and the corresponding pipe section of the insertion body 300 to be tested correspond to each other. When the liner assembly 200 is inserted into the corresponding pipe section of the corresponding insertion body 300, the liner assembly 200 can provide appropriate radial support to the insertion body 300 to maintain the natural expansion state of the insertion body 300.

[0083] Alternatively, in one design, the outer diameter of at least the portion of the liner assembly 200 that is inserted into the insert body 300 is adjustable. It can be understood that when at least a portion of the outer diameter of the liner assembly 200 is adjustable, the same liner assembly 200 can be adapted to insert bodies 300 of various specifications, thereby making the high-protection airtightness detection device more versatile and flexible as a whole.

[0084] There are many solutions for adjusting the outer diameter of at least part of the liner component 200, for example, when the liner component 200 is defined to have a natural state and a deformed state:

[0085] The deformation state can be specifically an expansion state in which the outer diameter is increased compared to the natural state. At this time, it can be specifically set that when the liner component 200 is in a natural state before being inserted into the insertion body 300, its outer diameter is smaller than the inner diameter of the corresponding pipe section of the insertion body 300, so that at least part of the liner component 200 can be inserted more smoothly; and when the liner component 200 is inserted into the insertion body 300, the expansion deformation with an increased outer diameter is generated, and it is in an expansion state, so that at least part of the outer wall of the liner component 200 and the inner wall of the corresponding pipe section of the insertion body 300 are mutually abutted, so that the liner component 200 can support the corresponding pipe section of the insertion body 300 externally.

[0086] Or the deformation state can specifically be a contraction state in which the outer diameter is reduced compared to the natural state. At this time, it can be specifically set that when the liner component 200 is in a contraction state before being inserted into the insertion body 300, its outer diameter is smaller than the inner diameter of the corresponding pipe section of the insertion body 300, so that at least part of the liner component 200 can be inserted more smoothly; and when the liner component 200 is inserted into the insertion body 300, the deformation is restored. During the deformation restoration process, at least part of the outer diameter of the liner component 200 increases until at least part of the outer wall of the liner component 200 abuts against the inner wall of the corresponding pipe section of the insertion body 300 (at this time, it can be just in the natural state, or it can be any deformation degree between the natural state and the contraction state), so as to achieve the purpose of the liner component 200 supporting the corresponding pipe section of the insertion body 300 externally.

[0087] Of course, the above-mentioned method of causing at least a portion of the liner assembly 200 to switch between the natural state and the deformed state is not limited:

[0088] For example, in one embodiment, at least a portion of the lining component 200 is configured to expand or contract when subjected to a specific stimulus after being inserted into the insertion body 300. The specific stimulus may be, but is not limited to, a specific temperature, a specific humidity, a specific electric field, or a specific magnetic field, and correspondingly, at least a portion of the lining component 200 is made of a temperature-dependent expansion material, a water-absorbing expansion material, an electrostrictive material, or a magnetostrictive material.

[0089] Or in another embodiment, the liner assembly 200 is movably arranged relative to the insert body 300, and during the movable stroke, the outer diameter of at least part of the liner assembly 200 is increased or decreased. Specifically, the movable direction of the liner assembly 200 relative to the insert body 300 is not limited, and can be along the circumferential direction (i.e., front-to-back direction), circumferential direction, radial direction and / or tangential direction of the insert body 300. For ease of understanding, the following specifically lists the axial (i.e., front-to-back direction) movement of the liner assembly 200 relative to the insert body 300 as an example for explanation.

[0090] In view of the above, in one embodiment, at least a portion of the lining component 200 can be configured as a conical structure or a multi-step structure. That is, the lining component 200 forms different plug-in parts along the front-back direction, and the outer diameters of the plug-in parts are different. In this way, by adjusting the plug-in depth of the lining component 200 and the insertion body 300, the plug-in parts with different outer diameters can be correspondingly inserted into the insertion body 300, thereby achieving the purpose of matching the corresponding pipe sections of the insertion hangers with different inner diameters.

[0091] Or in one embodiment, at least part of the lining component 200 is made of an elastically deformable material, and by extruding or stretching the elastically deformable material in the front-back direction, the outer diameter of the part can be expanded by extrusion, and reduced by stretching. Figures 1 to 7 In one embodiment, the liner assembly 200 includes a rigid tube 210 and an elastic member 220. At least a partial section of the rigid tube 210 is inserted into the insert body 300; the elastic member 220 is sleeved between the outer side of the rigid tube 210 and the inner side of the insert body 300, and is limited to the outer side of the rigid tube 210 and / or the inner side of the insert body 300 in the front-to-back direction. When subjected to a driving force in the front-to-back direction, the elastic member 220 has an expansion state of being squeezed to an expansion deformation, and / or a contraction state of being stretched to a contraction deformation, so that the outer diameter of the elastic member 220 can be adjusted.

[0092] It should be noted that the rigid pipe 210 can be directly made of a rigid material; or the rigid pipe 210 can also be made of an elastic material, but it is necessary to ensure that the rigidity of the rigid pipe 210 is greater than the rigidity of the elastic member 220. In this way, the rigid pipe 210 can form sufficient structural strength to form radial support with sufficient strength for the elastic member 220 and the inserted main body 300. The rigid pipe 210 is hollow, so that when the rigid pipe 210 is inserted into the inserted main body 300, the connection between the inserted main body 300 and, for example, a gas measuring device can still be ensured. In actual application, in order to facilitate the insertion, the rigid pipe 210 generally extends in the front-to-back direction, and the maximum outer diameter of the rigid pipe 210 is smaller than the minimum outer diameter at the corresponding pipe section of the inserted main body 300. The rigid pipe 210 includes an inserted pipe section 211 and an extended pipe section 212 connected in sequence in the front-to-back direction. The inserted pipe section 211 is used to be inserted into the inserted main body 300. An annular gap is reserved between the inner side of the insertion body 300 and the outer side of the insertion tube section 211. The extension tube section 212 extends outward from the insertion body 300, so that the extension tube section 212 reserves sufficient operating space, which can facilitate the user to insert and withdraw the liner assembly 200 relative to the insertion tube.

[0093] The elastic member 220 is sleeved on the insertion tube section 211 and is located between the outer side of the insertion tube section 211 and the inner side of the insertion body 300, so that the above-mentioned annular gap can be filled by the deformation of the elastic member 220. Since the elastic member 220 is configured to produce radial deformation when subjected to the front-to-back external force, it is necessary to limit the elastic member 220 at the outer side of the rigid tube 210 and / or the inner side of the insertion body 300 in advance to prevent the elastic member 220 from being driven to move in the front-to-back direction without radial deformation when subjected to the front-to-back external force. Specifically in one embodiment, a stop protrusion 211a can be provided on the side of the insertion tube section 211 away from the protruding tube section 212, and the stop protrusion 211a is stopped and abutted against the elastic member 220. The stop protrusion 211a can extend in the circumferential direction of the rigid tube 210 in an annular shape. Or the stop protrusion 211a is only provided on the partial outer side wall of the insertion tube section 211. Since the stop protrusion 211a is disposed on the side of the elastic member 220 away from the extended tube section 212, that is, located inside the insertion body 300, when the elastic member 220 receives the driving force in the front-back direction, the elastic member 220 is driven to have a displacement tendency toward the stop protrusion 211a. However, due to the stop limit of the stop protrusion 211a, the elastic member 220 cannot be displaced and can only be deformed radially.

[0094] It can be understood that the elastic member 220 can be sleeved on the outside of the entire inserted tube segment 211, or the elastic member 220 can be sleeved on the outside of a local tube segment of the inserted tube segment 211 according to actual needs, but it should be emphasized that in the radial direction, the positive projection area of ​​the elastic member 220 must at least cover the positive projection area of ​​the above-mentioned spring structure 112c, for example, to ensure that the tube segment clamped by the spring structure 112c in the insertion body 300 must correspond to the radial support of the elastic member 220 and the rigid tube 210.

[0095] As described above, the elastic member 220 is in a natural state before being inserted into the insert body 300, and its outer diameter is smaller than the inner diameter of the corresponding pipe section of the insert body 300; and after the elastic member 220 is inserted into the insert body 300, it will be driven to move to an expanded state, so that at least a part of the outer wall of the elastic member 220 and the inner wall of the corresponding pipe section of the insert body 300 abut against each other, so that the elastic member 220 supports the corresponding pipe section of the insert body 300. Or the elastic member 220 is in a contracted state before being inserted into the insert body 300, and its outer diameter is smaller than the inner diameter of the corresponding pipe section of the insert body 300; and after the elastic member 220 is inserted into the insert body 300, it is deformed and reset. During the deformation restoration process, at least a portion of the outer diameter of the elastic member 220 increases until at least a portion of the outer wall of the elastic member 220 abuts against the inner wall of the corresponding tube section of the insertion body 300 (at this time, it can be in a natural state, or it can be at any degree of deformation between the natural state and the contracted state), thereby achieving the purpose of the elastic member 220 providing external support to the corresponding tube section of the insertion body 300.

[0096] The elastic member 220 mentioned above can directly receive the external driving force, so as to realize the active switching between the natural state and the expanded state, or between the contracted state and the natural state. Or in one embodiment, the lining assembly 200 also includes an adjusting member 230, which is movably installed at the extended pipe section 212 along the front-back direction, and during the movement, the adjusting member 230 applies the driving force along the front-back direction to the elastic member 220. The adjusting member 230 can directly receive the external force, and convert the external force into the driving force and transmit it to the elastic member 220, so as to realize the active switching of the elastic member 220 between the natural state and the expanded state, or between the contracted state and the natural state.

[0097] Specifically, the external force borne by the adjusting member 230 and the driving force transmitted to the elastic member 220 may be in the same direction, that is, the external force along the axial direction (that is, the front-to-back direction) is directly converted into the driving force along the axial direction. Alternatively, the external force borne by the adjusting member 230 and the driving force transmitted to the elastic member 220 may be in different directions. For example, the external force along the radial direction / circumferential direction / tangential direction is converted into the driving force along the axial direction.

[0098] In addition, the adjusting member 230 and the joint assembly are independently arranged. That is, the adjusting member 230 is used alone in the lining assembly 200 to adjust the elastic member 220 to switch between the natural state and the expanded state, or between the contracted state and the natural state, so as to ensure that the structures between the lining assembly 200 and the joint assembly are independent of each other and do not interfere with each other.

[0099] Based on this, in a specific embodiment, the extended pipe section 212 is provided with a first external thread 212a; the adjusting member 230 includes a first nut 231, the first nut 231 is sleeved on the extended pipe section 212, and a first internal thread 230a is provided corresponding to the first external thread 212a. The first nut 231 drives the elastic member 220 to move to an expanded state or a contracted state during the threaded connection with the extended pipe section 212. By operating the threaded connection of the first internal thread 230a and the first external thread 212a, the first nut 231 can be displaced in the axial direction under the driving of the external force in the circumferential direction, and then when it moves close to the elastic member 220, the axial extrusion force is applied to the elastic member 220, driving the elastic member 220 to move to an expanded state; or when the first nut 231 and the end of the elastic member 220 are connected and fixed, and when it moves away from the elastic member 220, the axial tensile force is applied to the elastic member 220, driving the elastic member 220 to move to a contracted state.

[0100] In addition, it should be noted that the threaded connection between the first external thread 212a and the first internal thread 230a has a self-locking function, that is, when the external force is removed, the first external thread 212a and the first internal thread 230a can be maintained at the current threaded position, ensuring that the elastic member 220 is in the current deformation state, and providing continuous radial support to the insertion body 300.

[0101] When the adjustment member 230 and the joint assembly are arranged independently of each other, in a specific application, the lining assembly 200 can be first inserted into the interior of the insertion body 300 to achieve radial outward support for the insertion body 300, and then the lining assembly 200 and the insertion body 300 are inserted as a whole into the connecting hole 110a of the joint assembly as described in the above embodiment, and the radial inward clamping of the insertion body 300 is achieved through the joint assembly.

[0102] In addition, at least part of the components of the joint assembly constitutes the adjusting member 230. That is, the adjusting member 230 is not used in the lining assembly 200 alone, but is used in the joint assembly and the lining assembly 200 at the same time, and has a composite function, which helps to simplify the overall structure of the high-protection airtightness detection device, and makes the operation of the joint assembly and the operation of the lining assembly 200 more simplified.

[0103] Alternatively, at least some components of the joint assembly may apply the above-mentioned external force to the adjusting member 230 and / or the elastic member 220. In a specific embodiment, the joint assembly may include the joint body 110 and the second nut 120 as described above. However, further, the through hole 121 of the second nut 120 also includes a third hole segment 121c disposed at an end of the second hole segment 121b away from the first hole segment 121a. The third hole segment 121c can be inserted into the main body 300. Based on this:

[0104] In one solution, during the process of threading the second internal thread 121d and the second external thread 112a, the second hole section 121b can be driven to connect with the elastic member 220 or the adjusting member 230. As can be seen from the above, during the process of threading the second internal thread 121d at the first hole section 121a of the second nut 120 with the second external thread 112a at the first boss 112, the second nut 120 can be driven to move toward the body 111 relative to the first boss 112, and to move away from the body 111. Since the aperture of the second hole section 121b is reduced, that is, when the second nut 120 moves toward the body 111 relative to the first boss 112, the smaller aperture of the second hole section 121b gradually squeezes each spring structure 112c, driving each spring structure 112c to flip toward the radial inner side of the connecting hole 110a, and performing the tightening stroke. At the same time or in advance, the smaller aperture of the second hole section 121b will also drive the adjusting member 230 and / or the elastic member 220 to move axially, so that the elastic member 220 is squeezed and deformed to an expanded state. On the contrary, when the second nut 120 moves away from the body 111 relative to the first boss 112, the smaller aperture of the second hole section 121b gradually moves out and away from each spring structure 112c, and the squeezing force applied to each spring structure 112c is cancelled, so that each spring structure 112c can be flipped and reset toward the radial outer side of the connecting hole 110a to perform a release stroke. At the same time, in advance or delayed, the smaller aperture of the second hole section 121b gradually moves out and away from the adjusting member 230 and / or the elastic member 220, so that it moves in the opposite direction along the axial direction, so that the elastic member 220 is reset to a natural state, or continues to be stretched and deformed to a contracted state.

[0105] And / or in another embodiment, the second nut 120 is provided with abutment protrusion 122 at least at the third hole section 121c in the direction of the first hole section 121a, and during the threading process of the second internal thread 121d and the second external thread 112a, the abutment protrusion 122 can be driven to connect with the elastic member 220 or the adjusting member 230. At this time, the abutment protrusion 122 is equivalent to the smaller aperture of the second hole section 121b mentioned above. When the second nut 120 moves toward the body 111 relative to the first boss 112, the abutment protrusion 122 is driven to squeeze the adjusting member 230 and / or the elastic member 220, so that the elastic member 220 is deformed to an expanded state. On the contrary, when the second nut 120 moves away from the body 111 relative to the first boss 112, the abutment protrusion 122 gradually moves out and away from the adjusting member 230 and / or the elastic member 220, so that the elastic member 220 is reset to a natural state, or continues to be stretched and deformed to a contracted state.

[0106] It can be understood that through the above two schemes, the radial inward clamping of the joint assembly on the insert body 300 and the radial outward support of the liner assembly 200 on the insert body 300 can be achieved simultaneously or in a time-sharing manner by directly adjusting the second nut 120. In the above, the second nut 120 can be directly used to replace the adjusting member 230, or the adjusting member 230 can be additionally provided on the basis of the second nut 120. When the second nut 120 and the adjusting member 230 are provided at the same time, the second nut 120 can directly apply an external force in the axial direction to the adjusting member 230. Or, for example, the second nut 120 can apply an external force in the radial direction to the adjusting member 230, at which time a wedge-shaped surface transmission can be performed between the adjusting member 230 and the second nut 120, and / or between the adjusting member 230 and the elastic member 220, that is, the purpose of converting the external force in the radial direction into the driving force in the axial direction applied to the elastic member 220 can be achieved.

[0107] Further, in one embodiment, the extended pipe section 212 is provided with a first external thread 212a; the third hole section 121c is provided with a first internal thread 230a, and the second nut 120 constitutes an adjusting member 230, which is threadedly connected to the extended pipe section 212, so as to drive the elastic member 220 to move to an expanded state or a contracted state during the threaded connection process. In this way, the second nut 120 directly constitutes the above-mentioned adjusting member 230, and the thread directions between the first internal thread 230a and the second internal thread 121d, and between the first external thread 212a and the second external thread 112a are consistent, so that when the second nut 120 drives the spring structure 112c to perform a tightening stroke, the second internal thread 121d and the second external thread 112a are simultaneously or preliminarily driven to screw in, so as to realize the transition of the elastic member 220 from the natural state to the expanded state, or from the stretched state to the natural state. On the contrary, when the second nut 120 drives the spring structure 112c to perform a release stroke, it simultaneously, in advance or delayedly drives the second internal thread 121d and the second external thread 112a to be screwed out, thereby realizing the transition of the elastic member 220 from the expanded state to the natural state, or from the natural state to the stretched state.

[0108] It should be noted that, based on any of the above-mentioned embodiments, the lining assembly 200 further includes a washer 240, which is made of a rigid material and connected between the adjusting member 230 and the elastic member 220. At this time, the adjusting member 230 can be the above-mentioned first nut 231, the second hole section 121b in the second nut 120, the abutment protrusion 122 in the second nut 120, etc., without limitation. The rigidity of the washer 240 can make the driving force transmitted from the adjusting member 230 to the elastic member 220 more uniform and stable, and prevent the elastic member 220 from being deformed or structurally damaged due to local stress.

[0109] Specifically, in one embodiment, the gasket 240 includes a first ring segment 241 and a second ring segment 242 connected in sequence along the front-back direction, the outer diameter of the second ring segment 242 is larger than the outer diameter of the first ring segment 241, so as to form a contact surface 243 between the first ring segment 241 and the second ring segment 242; the first ring segment 241 is sleeved on the outer side of the rigid pipe 210 and inserted into the insertion body 300, and the end of the first ring segment 241 away from the second ring segment 242 contacts the elastic member 220. That is, the first ring segment 241 can make the driving force transmitted from the adjustment member 230 to the elastic member 220 more uniform and stable. The second ring segment 242 is sleeved on the outer side of the rigid pipe 210 and extends out of the insertion body 300, and the contact surface 243 is used to stop and limit the end of the insertion body 300. That is, the second ring segment 242 can effectively prevent the gasket 240 from being driven to be fully inserted into the insertion body 300, and can ensure to a certain extent that the elastic member 220 will not be excessively deformed in the insertion body 300, which helps to improve the reliability of the radial support of the liner assembly 200 for the insertion body 300.

[0110] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A high-protection airtightness detection device for an insertion body of an endoscope, characterized in that: The high protection air tightness detection device comprises: Two joint assemblies, each of which is provided with a connecting hole in the front-to-back direction, one section of the two connecting holes is used for correspondingly plugging the front pipe section and the rear pipe section of the insertion body, the other section of one connecting hole is used for communicating with the gas measuring device, and the other section of the other connecting hole is closed; and, At least one lining assembly is used to be inserted into the front pipe section and / or the rear pipe section of the insertion body and to support the insertion body outward.

2. The high protection airtightness detection device according to claim 1, characterized in that: The outer diameter of at least the portion of the liner assembly that is inserted into the insertion body can be adjusted.

3. The high protection airtightness detection device according to claim 1, characterized in that: The lining assembly comprises: a rigid pipe, at least a portion of which is inserted into the insertion body; and The elastic member is sleeved between the outer side of the rigid tube and the inner side of the insertion body, and is limited along the front-to-back direction at the outer side of the rigid tube and / or the inner side of the insertion body. When subjected to a driving force along the front-to-back direction, the elastic member has an expanded state of being squeezed to an expanded deformation, and / or a contracted state of being stretched to a contracted deformation, so as to achieve an adjustable outer diameter of the elastic member.

4. The high protection airtightness detection device as claimed in claim 3, characterized in that: The rigid pipe member includes an insertion pipe section inserted into the insertion body and an extension pipe section extending outward from the insertion body, and the elastic member is at least sleeved on the insertion pipe section; A stop protrusion is protruded laterally from a section of the inserted tube section away from the extended tube section, and the stop protrusion is in stop contact with the elastic member.

5. The high protection airtightness detection device as claimed in claim 3, characterized in that: The rigid pipe member includes an insertion pipe section inserted into the insertion body and an extension pipe section extending outward from the insertion body, and the elastic member is at least sleeved on the insertion pipe section; The lining assembly also includes an adjusting member, which is movably installed at the protruding pipe section along the front-rear direction, and during the movement, the adjusting member applies a driving force along the front-rear direction to the elastic member.

6. The high protection airtightness detection device as claimed in claim 5, characterized in that: The adjusting member and the joint assembly are arranged independently of each other; or, At least some of the components of the joint assembly constitute the adjusting member.

7. The high protection airtightness detection device as claimed in claim 5, characterized in that: The extended pipe section is provided with a first external thread; The adjusting member includes a first nut, which is sleeved on the protruding pipe section and has a first internal thread corresponding to the first external thread. During the threaded connection between the first nut and the protruding pipe section, the first nut drives the elastic member to move to the expanded state or to the contracted state.

8. The high protection airtightness detection device as claimed in claim 5, characterized in that: The joint assembly comprises: The joint body comprises a flange-shaped body and a first boss protruding from one side of the body in the front-back direction, the connecting hole sequentially passes through the body and the first boss, a section of the first boss close to the body is provided with a second external thread, and a section of the first boss away from the body is provided with a plurality of slots spaced apart along the circumference of the connecting hole, so as to form a plurality of spring structures at the free section of the first boss; and, The second nut is provided with a through hole in the front-to-back direction corresponding to the connecting hole, and the through hole includes a first hole section, a second hole section and a third hole section formed with a second internal thread, and the third hole section is suitable for the outer shape setting of the insertion body at the position, and the aperture of the second hole section is reduced in the direction away from the first hole section. The through hole is sleeved on the outer side of the first protrusion, and the second internal thread is connected to the second external thread, so that during the screw connection process, it has a tightening stroke that drives the second hole section to squeeze each of the spring leaf structures to move towards each other, and a releasing stroke that drives the second hole section to give way to allow each of the spring leaf structures to move and reset.

9. The high protection airtightness detection device as claimed in claim 8, characterized in that: During the screw connection process between the second internal thread and the second external thread, the second hole section may be driven to be connected with the elastic member or the adjusting member.

10. The high protection airtightness detection device according to claim 8, characterized in that: The second nut is provided with an abutment protrusion at least at the third hole section in the direction of the first hole section, and during the threaded connection between the second internal thread and the second external thread, the abutment protrusion can be driven to connect with the elastic member or the adjusting member.

11. The high protection airtightness detection device according to claim 8, characterized in that: The extended pipe section is provided with a first external thread; The third hole section is provided with a first internal thread, and the second nut constitutes the adjusting member, which is threadedly connected to the protruding pipe section so as to drive the elastic member to move to the expanded state or the contracted state during the threaded connection process.

12. The high protection airtightness detection device according to any one of claims 5 to 11, characterized in that: The lining assembly further includes a gasket, which is made of a rigid material and is connected between the adjusting member and the elastic member.

13. The high protection airtightness detection device according to claim 12, characterized in that: The gasket comprises a first circle segment and a second circle segment connected in sequence along the front-rear direction, the outer diameter of the second circle segment is larger than the outer diameter of the first circle segment, so as to form an abutment surface between the first circle segment and the second circle segment; The first ring segment is sleeved on the outside of the rigid tube and inserted into the insertion body, and the end of the first ring segment away from the second ring segment abuts against the elastic member; The second ring section is sleeved on the outer side of the rigid pipe and extends out of the insertion body, and the abutment surface is used to stop and limit the end of the insertion body.

14. A high protection air tightness detection system, characterized in that: It comprises a gas measuring device and a high protection air tightness detection device as described in any one of claims 1 to 13.

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