Air tightness detection device and air tightness detection system

Abstract

The utility model provides an air tightness detection device, which is used for carrying out air tightness detection on an inserted hose and comprises a first joint assembly, a second joint assembly and a third joint assembly, the first joint assembly is provided with a closed accommodating space, and the inserted hose is communicated with the accommodating space when one end of the inserted hose is kept by the first joint assembly; the second connector assembly is used for keeping the other end of the insertion hose, and the second connector assembly comprises an air inlet, so that air with pressure is provided into the insertion hose through the air inlet. The utility model also provides an air tightness detection system.

Description

Technical Field

[0001] The present invention relates to an airtightness detection device and an airtightness detection system, and belongs to the technical field of detection equipment. Background Art

[0002] An endoscope is a common medical optical instrument that can enter the body through the mouth, other natural orifices or artificial incisions, and directly observe lesions through image sensors, optical lenses and other components, making it easier for doctors to observe and diagnose.

[0003] An endoscope usually has an insertion hose that can be inserted into the body. The insertion hose consists of an inner tube and an outer tube wrapped around the inner tube. Accordingly, cables, instrument channels, traction ropes and other components are all set in the inner tube, while the outer tube is used to isolate body fluids to prevent body fluids from entering the inner tube and corroding internal parts. Therefore, the outer tube of the insertion hose cannot be damaged or have holes.

[0004] Based on this, before the endoscope is assembled or shipped, the insertion hose needs to be tested for tightness. The most commonly used test method is to inflate the insertion hose of the endoscope and maintain the pressure, and judge whether the insertion hose of the endoscope is leaking according to the change of air pressure, so as to judge whether there is damage or hole on the surface of the insertion hose of the endoscope.

[0005] Chinese utility model patent publication CN220104427U discloses a hose sealing test device, which can detect the air tightness of the insertion hose of an endoscope, but the document has the following disadvantages: 1. The structure is complex and the cost is high. 2. It can only detect the finished endoscope, and cannot detect the insertion hose alone. If the test is performed after the endoscope is assembled, if the insertion hose is found to be damaged or leaky, it will take a lot of time to replace the insertion hose, and other parts and consumables may be scrapped. 3. The length of the insertion hose to be tested is limited by the size of the tooling, and it is impossible to detect an insertion hose that exceeds the detection range of the tooling. Utility Model Content

[0006] In order to solve one of the above technical problems, the present disclosure provides an airtightness detection device and an airtightness detection system.

[0007] According to one aspect of the present disclosure, there is provided an airtightness detection device for performing airtightness detection on an insertion hose, comprising:

[0008] A first connector assembly, wherein the first connector assembly has a sealed accommodation space, and when the first connector assembly holds one end of the insertion hose, the insertion hose is in communication with the accommodation space;

[0009] The second joint assembly is used to hold the other end of the insertion hose, wherein the second joint assembly includes an air inlet to provide pressurized gas into the insertion hose through the air inlet.

[0010] According to the airtightness detection device of at least one embodiment of the present disclosure, the first joint assembly includes: a first sealing joint, and the first sealing joint forms the accommodating space.

[0011] According to the airtightness detection device of at least one embodiment of the present disclosure, the first sealing joint has an axial direction, one end of the inserted hose includes a passive bending section, and along the axial direction, the length of the accommodating space is greater than or equal to the length of the passive bending section, wherein at least a portion of the passive bending section is located within the accommodating space.

[0012] According to the airtightness detection device of at least one embodiment of the present disclosure, the first joint assembly includes:

[0013] a first fastening element, the first fastening element being disposed on the first sealing joint and causing at least a portion of the first sealing joint to deform;

[0014] A first sealing component, at least a portion of which is located inside the first sealing joint, so that the first sealing component forms a sealing connection with the insertion hose through deformation of the first sealing joint.

[0015] According to the airtightness detection device of at least one embodiment of the present disclosure, the first sealing component is provided with a through hole along its axial direction, at least a portion of the inserted hose is located in the through hole of the first sealing component, and when the first sealing component is squeezed by the first sealing joint, the inner wall of the through hole of the first sealing component is in sealing contact with the outer tube of the inserted hose.

[0016] According to the airtightness detection device of at least one embodiment of the present disclosure, a through hole is provided on the first fastening element, and one end of the insertion hose can be inserted into the accommodating space through the through hole of the first fastening element.

[0017] According to the airtightness detection device of at least one embodiment of the present disclosure, the first sealing joint includes:

[0018] a first seat component, the first seat component being configured to be easily accessible by a tool;

[0019] The cavity portion is arranged on one side of the first seat component, and the cavity portion and the first seat component form the accommodating space, wherein the first seat component has a center hole, and one end of the insertion hose is inserted into the accommodating space through the center hole.

[0020] According to the airtightness detection device of at least one embodiment of the present disclosure, the first sealing joint also includes: a first threaded component, the first threaded component is located on the other side of the first seat component, and the first threaded component includes an external thread formed on its outer surface; wherein the first fastening element includes an internal thread formed on its inner surface, so that the first fastening element and the first sealing joint are threadedly connected.

[0021] According to the airtightness detection device of at least one embodiment of the present disclosure, the first sealing joint further includes:

[0022] A first deformation portion, one end of which is connected to the first threaded component, and the other end of which is in contact with and matched with the inner surface of the first fastening element, so that the first deformation portion is deformed.

[0023] According to the airtightness detection device of at least one embodiment of the present disclosure, the first deformation portion includes a plurality of deformation pieces, the deformation pieces are distributed along a preset circumference, and there is a gap between two deformation pieces adjacent to each other in the circumferential direction.

[0024] According to the airtightness detection device of at least one embodiment of the present disclosure, a step surface is provided at a connection between the first deformation portion and the first threaded component, and the step surface is used to limit the position of the first sealing component in the axial direction.

[0025] According to the air tightness detection device of at least one embodiment of the present disclosure, the second joint assembly includes: a second sealing joint, and the second sealing joint includes an air inlet.

[0026] According to the airtightness detection device of at least one embodiment of the present disclosure, the second joint assembly further includes:

[0027] a second fastening element, the second fastening element being disposed at the second sealing joint and causing at least a portion of the second sealing joint to deform;

[0028] A second sealing component, at least a portion of which is located inside the second sealing joint, so that the second sealing component forms a sealing connection with the insertion hose through deformation of the second sealing joint.

[0029] According to the airtightness detection device of at least one embodiment of the present disclosure, the second sealing component is provided with a through hole along its axial direction, and at least a portion of the inserted hose is located in the through hole of the second sealing component. When the second sealing component is squeezed by the second sealing joint, the inner wall of the through hole of the second sealing component is in sealing contact with the outer tube of the inserted hose.

[0030] According to the airtightness detection device of at least one embodiment of the present disclosure, a through hole is provided on the second fastening element, and the other end of the insertion hose can be inserted into the through hole of the second sealing component via the through hole of the second fastening element.

[0031] According to the airtightness detection device of at least one embodiment of the present disclosure, the second sealing joint includes:

[0032] a second seat component, the second seat component being configured to be easily accessible by a tool;

[0033] The air inlet portion is arranged at one side of the second seat component and comprises an air inlet, wherein the second seat component has a central hole, and the air inlet is communicated with the central hole.

[0034] According to the airtightness detection device of at least one embodiment of the present disclosure, the second sealing joint also includes: a second threaded component, the second threaded component is located on the other side of the second seat component, and the second threaded component includes an external thread formed on its outer surface; wherein the second fastening element includes an internal thread formed on its inner surface, so that the second fastening element and the second sealing joint are threadedly connected.

[0035] According to the airtightness detection device of at least one embodiment of the present disclosure, the second sealing joint further includes:

[0036] A second deformation portion, one end of which is connected to the second threaded component, and the other end of which is in contact with and matched with the inner surface of the second fastening element, so that the second deformation portion is deformed.

[0037] According to the airtightness detection device of at least one embodiment of the present disclosure, the second deformation portion includes a plurality of deformation pieces, the deformation pieces are distributed along a preset circumference, and there is a gap between two deformation pieces adjacent to each other in the circumferential direction.

[0038] According to the airtightness detection device of at least one embodiment of the present disclosure, a step surface is provided at a connection between the second deformation portion and the second threaded component, and the step surface is used to limit the position of the second sealing component in the axial direction.

[0039] According to another aspect of the present disclosure, an airtightness detection system is provided, which includes the airtightness detection device mentioned above.

[0040] According to at least one embodiment of the present disclosure, the air tightness detection system further includes: a leak detector, which is connected to the air inlet of each air tightness detection device through a pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0042] Figure 1 It is a schematic structural diagram of an insertion hose of an endoscope according to one embodiment of the present disclosure.

[0043] Figure 2 It is a schematic structural diagram of an airtightness detection device according to an embodiment of the present disclosure.

[0044] Figure 3 It is a schematic cross-sectional structural diagram of a first joint assembly according to an embodiment of the present disclosure.

[0045] Figure 4 is a schematic diagram of an exploded structure of a first joint assembly according to one embodiment of the present disclosure.

[0046] Figure 5 is a schematic diagram of an exploded structure of a first joint assembly according to one embodiment of the present disclosure.

[0047] Figure 6 It is a schematic cross-sectional structural diagram of a first joint assembly according to an embodiment of the present disclosure.

[0048] Figure 7 It is a schematic structural diagram of a leak detector according to one embodiment of the present disclosure.

[0049] The specific reference numerals in the figure are:

[0050] 100 first joint assembly

[0051] 110 first sealing joint

[0052] 111 First seat component

[0053] 112 Cavity

[0054] 113 first threaded component

[0055] 114 first deformation part

[0056] 120 first fastening element

[0057] 130 first sealing component

[0058] 200 Second joint assembly

[0059] 210 Second sealing joint

[0060] 211 Second seat parts

[0061] 212 air intake

[0062] 213 second threaded member

[0063] 214 Second deformation part

[0064] 220 second fastening element

[0065] 230 second sealing component

[0066] 300 Leak Detector

[0067] 310 High Pressure Gas Generator

[0068] 320 valve parts

[0069] 330 Release knob

[0070] 340 exhaust pipe

[0071] 350 connection joint

[0072] 360 Pressure Gauge

[0073] 900 Insert the hose. DETAILED DESCRIPTION

[0074] The present disclosure is further described in detail below in conjunction with the accompanying drawings and implementations. It is understood that the specific implementations described herein are only used to explain the relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only the parts related to the present disclosure are shown in the accompanying drawings.

[0075] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0076] Unless otherwise specified, the exemplary embodiments / embodiments shown will be understood as providing exemplary features of various details of some ways in which the technical concept of the present disclosure can be implemented in practice. Therefore, unless otherwise specified, the features of the various embodiments / embodiments can be combined, separated, interchanged and / or rearranged without departing from the technical concept of the present disclosure.

[0077] The use of cross-hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise specified, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the described order. In addition, the same figure numbers represent the same components.

[0078] When a component is referred to as being "on" or "over," "connected to," or "coupled to" another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being "directly on," "directly connected to," or "directly coupled to" another component, there are no intervening components. For this purpose, the term "connected" may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0079] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "down," "over," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would subsequently be positioned "over" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0080] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0081] Figure 1 It is a schematic structural diagram of an insertion hose of an endoscope according to one embodiment of the present disclosure.

[0082] Considering that some endoscopes have insertion hoses with passive bending sections, e.g. Figure 1 The right end of the inserted hose is formed into a passive bending section, which has only an inner tube but no outer tube. The pipeline air tightness detection device in the prior art cannot effectively seal and maintain the passive bending section, and thus cannot detect the inserted hose.

[0083] To this end, the present invention redesigns the structure of an airtightness detection device and provides a new airtightness detection device.

[0084] Figure 2 It is a schematic structural diagram of an airtightness detection device according to an embodiment of the present disclosure.

[0085] like Figure 2 As shown, the present disclosure provides an air tightness detection device, which can be used to detect the air tightness of a pipeline, and in particular, it can be used to detect the air tightness of an insertion hose 900 of an endoscope. The insertion hose 900 is preferably Figure 1 The insertion hose 900 shown has a passive bending section at one end, and the passive bending section of the insertion hose 900 can be designed to have different lengths according to the needs of the endoscope. In the present disclosure, the insertion hose 900 is a prior art, and its structure will not be described in detail in the present disclosure.

[0086] The airtightness detection device disclosed in the present invention may include a first joint assembly 100 and a second joint assembly 200 and other structures.

[0087] The first joint assembly 100 has a sealed accommodating space. When the first joint assembly 100 holds one end of the insertion hose 900, at least a portion of the insertion hose 900 can be located in the accommodating space; for example, when the insertion hose 900 includes a passive bending section, the passive bending section can be located in the accommodating space, so that the first joint assembly 100 can hold the portion of the insertion hose 900 having the outer tube, that is, the first joint assembly 100 can hold the outer tube near the passive bending section of the insertion hose 900, thereby achieving stable holding of one end of the insertion hose 900.

[0088] The second joint assembly 200 is used to hold the other end of the insertion hose 900, wherein the second joint assembly 200 includes an air inlet to provide pressurized gas into the insertion hose 900 through the air inlet. Specifically, the air inlet can be connected to the leak detector 300 (see Figure 7 ), the leak detector 300 can provide pressurized gas and keep the gas in the insertion hose 900 at a preset pressure, thereby realizing the detection of the air tightness of the insertion hose 900.

[0089] The structures of the first joint assembly 100 and the second joint assembly 200 will be described in detail below with reference to the accompanying drawings.

[0090] Figure 3 It is a schematic cross-sectional structural diagram of a first joint assembly according to an embodiment of the present disclosure. Figure 4 is a schematic diagram of an exploded structure of a first joint assembly according to one embodiment of the present disclosure.

[0091] like Figure 3 and Figure 4 As shown, the first joint assembly 100 of the present disclosure includes: a first sealing joint 110 , a first fastening element 120 , a first sealing component 130 and other components.

[0092] The first sealing joint 110 has an axial direction; when the first joint assembly 100 remains inserted into the hose 900 , the axial direction of the inserted hose 900 can coincide with the axial direction of the first sealing joint 110 .

[0093] In a specific embodiment, the first sealing joint 110 may include: a first seat component 111, a cavity portion 112, a first threaded component 113, and a first deformation portion 114. The first sealing joint 110 of the present disclosure is preferably integrally formed, for example, the first sealing joint 110 can be integrally injection molded by materials such as plastic, so that the first sealing joint 110 of the present disclosure has good sealing performance.

[0094] The first seat component 111 is configured to be easy to operate with tools; in a preferred embodiment, the first seat component 111 is formed as a whole in a prism shape, for example, in the shape of a regular hexagonal prism, so that the first seat component 111 can be operated by a tool such as a wrench, and relative rotation can be generated between the first sealing joint 110 and the first fastening element 120.

[0095] like Figure 3 and Figure 4 As shown, the cavity portion 112 is disposed on one side of the first seat component 111, and the cavity portion 112 and the first seat component 111 form an internal space, which forms at least a part of the accommodating space. In a preferred embodiment, the internal space is formed into a substantially cylindrical shape, and accordingly, the cavity portion 112 can also be formed into a cylindrical shape.

[0096] In some preferred embodiments, along the axial direction of the accommodation space, or along the axial direction of the first sealing joint 110, the length of the accommodation space is greater than or equal to the length of the passive bending section, so that the passive bending section can be at least partially or completely placed in the accommodation space without being rolled up in the accommodation space, thereby facilitating the application of pressurized gas to the insertion hose 900. In other words, along the axial direction of the accommodation space, the length of the accommodation space can be determined according to the length of the passive bending section, for example, the length of the accommodation space can be greater than or equal to the length of the longest passive bending section of the insertion hose 900 to be tested, so that the airtightness detection device of the present disclosure can test most or even all insertion hoses 900.

[0097] The first seat component 111 has a central hole, and one end of the insertion hose 900 is inserted into the accommodating space via the central hole, that is, the central hole of the first seat component 111 of the present disclosure forms a part of the accommodating space. More preferably, the central hole and the internal space may have the same central axis. In addition, the size of the central hole of the first seat component 111 is set to allow the insertion hose 900 to pass through, for example, the diameter of the central hole of the first seat component 111 is larger than the diameter of the insertion hose 900. More preferably, the diameter of the internal space is larger than the diameter of the central hole of the first seat component 111, so that one end of the insertion hose 900 can be easily inserted into the internal space.

[0098] The first threaded component 113 is located on the other side of the first seat component 111, and the first threaded component 113 includes an external thread formed on its outer surface; accordingly, the first threaded component 113 is also provided with a center hole, and the center hole of the first threaded component 113 can have the same center axis and the same size as the center hole of the first seat component 111, so that when the first sealing joint 110 of the present disclosure is processed, the center hole of the first seat component 111 and the center hole of the first threaded component 113 can be processed and formed at one time, which reduces the processing technology and reduces the processing cost. In the present disclosure, at least part of the center hole of the first threaded component 113 is formed as at least part of the accommodating space.

[0099] One end of the first deformation portion 114 is connected to the first threaded component 113, and the other end of the first deformation portion 114 is suspended, so that when an external force is applied to the other end of the first deformation portion 114, and the external force is a radially inward force or there is a radially inward component force, the first deformation portion 114 can be deformed and contract inward; in addition, when the external force applied to the first deformation portion 114 disappears, the first deformation portion 114 can expand outward and return to its original state.

[0100] In the present disclosure, the outward expansion process of the first deformation portion 114 can be achieved based on its own elastic deformation. In this case, the first deformation portion 114 can be made of a material that can produce elastic deformation, or can be achieved based on the restoring force of the first sealing component 130 .

[0101] In a specific embodiment, the first deformation portion 114 includes a plurality of deformation sheets, and the deformation sheets are distributed along a preset circumference, and there is a gap between two deformation sheets adjacent to each other in the circumferential direction, so that when the first deformation portion 114 contracts inwardly, the two adjacent deformation sheets will not interfere with each other. In other words, in the present disclosure, the value of the gap between two adjacent deformation sheets can be determined according to the amount of deformation required for the deformation sheets. For example, when the deformation sheet is required to have a larger amount of inward contraction, the value of the gap can be set to a larger value.

[0102] In the present disclosure, the inner wall surface of the first deformation portion 114, that is, the inner wall surface of each deformation piece is distributed on a circumference, which has the same central axis as the central hole of the first threaded component 113, and the diameter of the circumference is larger than the diameter of the central hole of the first threaded component 113. Therefore, the connection between the first deformation portion 114 and the first threaded component 113 has a step surface, and the step surface is used to limit the position of the first sealing component 130 in the axial direction.

[0103] Specifically, at least a portion of the first sealing component 130 is located inside the first sealing joint 110 , so that the first sealing component 130 forms a sealing connection with the insertion hose 900 through deformation of the first sealing joint 110 .

[0104] like Figure 3 and Figure 4 As shown, the first sealing component 130 can be cylindrical, that is, the first sealing component 130 is provided with a through hole along its axial direction, and can be made of easily deformable materials such as rubber or silicone; in the present disclosure, when no external force is applied to the first sealing component 130, the diameter of the through hole (inner hole) of the first sealing component 130 is greater than or equal to the outer diameter of the insert hose 900, so that the insert hose 900 can easily pass through the first sealing component 130. In other words, the diameter of the through hole of the first sealing component 130 can be set to be greater than or equal to the maximum outer diameter of the insert hose 900 to be detected, so that the airtightness detection device of the present disclosure can detect most of the insert hoses 900 or even all of the insert hoses 900.

[0105] The first fastening element 120 is arranged on the first sealing joint 110, and causes at least a portion of the first sealing joint 110 to be deformed; thus, when the first sealing joint 110 is deformed, the first sealing component 130 can be deformed, and accordingly, the inner diameter of the first sealing component 130 will become smaller, and when at least a portion of the inserted hose 900 is located in the through hole of the first sealing component 130, the inner wall of the through hole of the first sealing component 130 is in sealing contact with the outer tube of the inserted hose 900, so that the first joint assembly 100 of the present disclosure can be inserted into inserted hoses of different diameters, and the first joint assembly 100 can be in sealing contact with inserted hoses of different diameters.

[0106] In a specific embodiment, the first fastening element 120 includes an internal thread formed on an inner surface thereof, so that the first fastening element 120 and the first sealing joint 110 are threadedly connected.

[0107] At the same time, at least part of the inner surface of at least part of the first fastening element 120 is formed as a curved surface or an inclined surface, so that when the first fastening element 120 rotates relative to the first sealing joint 110 and approaches the first seat component 111, the inner surface of the first fastening element 120 can contact the other end of the first deformation portion 114, so that the first deformation portion 114 is deformed, that is, the first fastening element 120 contracts inwardly, and further causes the first sealing component 130 to contract inwardly. At this time, the first sealing component 130 can hold the insertion hose and maintain a sealed connection with the insertion hose.

[0108] In the present disclosure, a through hole is provided on the first fastening element 120, and one end of the insertion hose 900 can be inserted into the accommodation space through the through hole of the first fastening element 120. Preferably, the through hole of the first fastening element 120 may have the same axis as the central hole of the first seat component 111. More preferably, the diameter of the through hole of the first fastening element 120 may be smaller than the diameter of the central hole of the first seat component 111, and may have substantially the same size as the through hole of the first sealing component 130.

[0109] Figure 5 is a schematic diagram of an exploded structure of a first joint assembly according to one embodiment of the present disclosure. Figure 6 It is a schematic cross-sectional structural diagram of a first joint assembly according to an embodiment of the present disclosure.

[0110] like Figure 5 and Figure 6 As shown, the second joint assembly 200 of the present disclosure includes: a second sealing joint 210 , a second fastening element 220 , a second sealing component 230 and other components.

[0111] The second sealing joint 210 has an axial direction; when the second joint assembly 200 keeps the inserted hose 900, the axial direction of the inserted hose 900 can coincide with the axial direction of the second sealing joint 210. That is, when the airtightness detection device of the present disclosure is in use, the central axes of the first joint assembly 100 and the second joint assembly 200 can be the same, so that the inserted hose 900 is kept in a straight state, which facilitates the airtightness detection of the inserted hose 900.

[0112] In a specific embodiment, the second sealing joint 210 may include: a second seat component 211, an air inlet 212, a second threaded component 213, a second deformation portion 214 and other components. The second sealing joint 210 of the present disclosure is preferably integrally formed, for example, the second sealing joint 210 can be integrally injection molded by materials such as plastic, so that the second sealing joint 210 of the present disclosure has good sealing performance.

[0113] The second seat component 211 is configured to be easy to operate with tools; in a preferred embodiment, the second seat component 211 is formed as a whole in the shape of a prism, for example, in the shape of a regular hexagonal prism, so that the second seat component 211 can be operated by a tool such as a wrench, and the second sealing joint 210 can produce relative rotation with the second fastening element 220.

[0114] like Figure 5 and Figure 6 As shown, the air inlet 212 includes an air inlet and is disposed on one side of the second seat component 211. When the air tightness detection device of the present disclosure is in use, the air inlet 212 can be connected to the leak detector 300 (see Figure 7 ), the leak detector 300 can be a manual leak detector or an automatic leak detector, and the leak detector 300 can provide pressurized gas and keep the gas in the insertion hose 900 at a preset pressure, thereby realizing the detection of the airtightness of the insertion hose 900.

[0115] The second seat component 211 has a central hole, and the central hole of the second seat component 211 of the present disclosure can be communicated with the air inlet 212 , so that the pressurized gas applied by the air inlet 212 can be provided to the other end of the insertion hose 900 through the central hole of the second seat component 211 .

[0116] In a preferred embodiment, the central hole of the second seat component 211 and the air inlet portion 212 may have the same central axis. In addition, the diameter of the central hole of the second seat component 211 may be greater than the diameter of the insertion hose 900 .

[0117] The second threaded component 213 is located on the other side of the second seat component 211, and the second threaded component 213 includes an external thread formed on its outer surface; accordingly, the second threaded component 213 is also provided with a center hole, and the center hole of the second threaded component 213 can have the same center axis as the center hole of the second seat component 211 and have the same size. Therefore, when the second sealing joint 210 of the present invention is processed, the center hole of the second seat component 211 and the center hole of the second threaded component 213 can be processed and formed at one time, which reduces the processing technology and reduces the processing cost.

[0118] One end of the second deformation portion 214 is connected to the second threaded component 213, and the other end of the second deformation portion 214 is suspended, so that when an external force is applied to the other end of the second deformation portion 214, and the external force is a radially inward force or there is a radially inward component force, the second deformation portion 214 can be deformed and contract inward; in addition, when the external force applied to the second deformation portion 214 disappears, the second deformation portion 214 can expand outward and return to its original state.

[0119] In the present disclosure, the outward expansion process of the second deformation portion 214 can be achieved based on its own elastic deformation. In this case, the second deformation portion 214 can be made of a material that can produce elastic deformation, or can be achieved based on the restoring force of the second sealing component 230 .

[0120] In a specific embodiment, the second deformation portion 214 includes a plurality of deformation sheets, which are distributed along a preset circumference, and there is a gap between two deformation sheets adjacent to each other in the circumferential direction, so that when the second deformation portion 214 contracts inwardly, the two adjacent deformation sheets will not interfere with each other. In other words, in the present disclosure, the value of the gap between two adjacent deformation sheets can be determined according to the amount of deformation required for the deformation sheets. For example, when the deformation sheet is required to have a larger amount of inward contraction, the value of the gap can be set to a larger value.

[0121] In the present disclosure, the inner wall surface of the second deformation part 214, that is, the inner wall surface of each deformation piece is distributed on a circumference, which has the same central axis as the central hole of the second threaded component 213, and the diameter of the circumference is larger than the diameter of the central hole of the second threaded component 213. Therefore, the connection between the second deformation part 214 and the second threaded component 213 has a step surface, and the step surface is used to limit the position of the second sealing component 230 in the axial direction.

[0122] Specifically, at least a portion of the second sealing component 230 is located inside the second sealing joint 210 , so that the second sealing component 230 and the insert hose 900 form a sealed connection through deformation of the second sealing joint 210 .

[0123] like Figure 5 and Figure 6 As shown, the second sealing component 230 can be cylindrical, that is, the second sealing component 230 is provided with a through hole along its axial direction, and can be made of easily deformable materials such as rubber or silicone; in the present disclosure, when no external force is applied to the second sealing component 230, the diameter of the through hole (inner hole) of the second sealing component 230 is greater than or equal to the outer diameter of the insert hose 900, so that the insert hose 900 can easily pass through the second sealing component 230. In other words, the diameter of the through hole of the second sealing component 230 can be set to be greater than or equal to the maximum outer diameter of the insert hose 900 to be detected, so that the airtightness detection device of the present disclosure can detect most of the insert hoses 900 or even all of the insert hoses 900.

[0124] The second fastening element 220 is arranged on the second sealing joint 210, and causes at least a portion of the second sealing joint 210 to be deformed; thus, when the second sealing joint 210 is deformed, the second sealing component 230 can be deformed, and accordingly, the inner diameter of the second sealing component 230 will become smaller, and when at least a portion of the inserted hose 900 is located in the through hole of the second sealing component 230, the inner wall of the through hole of the second sealing component 230 is in sealing contact with the outer tube of the inserted hose 900, so that the second joint assembly 200 of the present disclosure can be inserted into inserted hoses of different diameters, and the second joint assembly 200 can be in sealing contact with inserted hoses of different diameters.

[0125] In a specific embodiment, the second fastening element 220 includes an internal thread formed on an inner surface thereof, so that the second fastening element 220 and the second sealing joint 210 are threadedly connected.

[0126] At the same time, at least part of the inner surface of at least part of the second fastening element 220 is formed as a curved surface or an inclined surface, so that when the second fastening element 220 rotates relative to the second sealing joint 210 and approaches the second seat component 211, the inner surface of the second fastening element 220 can contact the other end of the second deformation portion 214, so that the second deformation portion 214 is deformed, that is, the second fastening element 220 contracts inwardly, and further causes the second sealing component 230 to contract inwardly. At this time, the second sealing component 230 can hold the insertion hose and maintain a sealed connection with the insertion hose.

[0127] In the present disclosure, a through hole is provided on the second fastening element 220, and the other end of the insertion hose 900 can be inserted into the interior of the second sealing component 230 through the through hole of the second fastening element 220. Preferably, the through hole of the second fastening element 220 may have the same axis as the central hole of the second seat component 211. More preferably, the diameter of the through hole of the second fastening element 220 may be smaller than the diameter of the central hole of the second seat component 211, and may have substantially the same size as the through hole of the second sealing component 230.

[0128] When the air tightness detection device of the present invention is in use, the first joint assembly 100 and the second joint assembly 200 are separately arranged and respectively connected to the two ends of the insertion hose, so that the insertion hose of various lengths can be detected without being limited by the length of the insertion hose.

[0129] Therefore, the airtightness detection device disclosed in the present invention can detect the insertion hose separately, without the need to detect the insertion hose after assembling it into a finished endoscope. Defects such as damage or holes in the insertion hose can be discovered in advance, saving the time and possible scrapping of parts when defects such as damage or holes in the insertion hose occur after assembling it into a finished endoscope.

[0130] In addition, when the airtightness detection device of the present invention is used, the deformation of the first sealing component and the second sealing component can realize the detection of inserted hoses of various outer diameters. The airtightness detection device of the present invention has low cost, convenient operation, low learning cost, and will not cause human-induced poor detection problems; moreover, the airtightness detection device of the present invention is small in size and occupies a small area, which can save the manufacturer's space occupied by the airtightness detection device; it is easy to carry, and the device can be carried around, thereby increasing the working range and use place of the airtightness detection device.

[0131] According to another aspect of the present disclosure, an airtightness detection system is provided, which includes a plurality of the above-mentioned airtightness detection devices, so that the airtightness detection system of the present disclosure can detect a plurality of inserted hoses at one time, thereby improving work efficiency.

[0132] Figure 7 is a schematic structural diagram of a leak detector 300 according to an embodiment of the present disclosure.

[0133] like Figure 7 As shown, the air tightness detection system of the present disclosure may further include a leak detector 300. In the present disclosure, the number of the leak detector 300 may be one, and the leak detector 300 may be respectively connected to the air inlet of each air tightness detection device through a multi-vent pipe joint, so that the pressurized gas provided by the leak detector 300 may be delivered to each air tightness detection device, thereby realizing the air tightness detection of the inserted hose 900.

[0134] More specifically, if Figure 7 As shown, the leak detector shown is a manual leak detector, and the leak detector 300 may include a high-pressure gas generator 310 and a valve component 320 connected to the high-pressure gas generator 310, wherein the high-pressure gas generator 310 may be a manually driven rubber airbag having an outlet, and the valve component 320 is connected to the outlet of the rubber airbag.

[0135] The valve member 320 is provided with a release knob 330, which is used to release the gas at a preset pressure. Specifically, when the release knob 330 is in a closed state, the gas at a preset pressure generated by the high-pressure gas generator 310 can be provided to the exhaust pipe 340, and provided to the insertion hose 900 via the exhaust pipe 340; when the release knob 330 is in an open state, the gas at the preset pressure can be released to the atmosphere via the release knob 330, thereby achieving pressure relief of the insertion hose 900.

[0136] The valve component 320 is connected to one end of the exhaust pipe 340, and the other end of the exhaust pipe 340 may be provided with a connecting joint 350, which can be connected to a multi-vent pipe joint and connected to the air inlet of the air-tightness detection device through the multi-vent pipe joint; or, the connecting joint 350 is directly connected to the air inlet of the air-tightness detection device.

[0137] Moreover, a pressure gauge 360 ​​may be provided on the valve component 320 , and the pressure gauge 360 ​​may be connected to the exhaust pipe 340 , so that the pressure in the exhaust pipe 340 can be displayed by the pressure gauge 360 ​​, thereby the pressure value of the gas in the inserted hose 900 can be displayed by the pressure gauge 360 ​​.

[0138] When the leak detector disclosed in the present invention is in use, the high-pressure gas generator 310 can be held and released by hand to provide gas of preset pressure to the insertion hose 900, and the pressure value of the gas in the insertion hose 900 can be displayed in real time through the pressure gauge 360, making the air tightness detection process of the insertion hose 900 safer and more convenient.

[0139] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments / methods or examples described in this specification and the features of the different embodiments / methods or examples, unless they are contradictory.

[0140] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0141] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. An air tightness detection device for detecting the air tightness of an inserted hose, characterized in that: include: a first joint assembly, the first joint assembly having a sealed accommodation space, and when the first joint assembly holds one end of the insertion hose, the insertion hose is in communication with the accommodation space; and The second joint assembly is used to hold the other end of the insertion hose, wherein the second joint assembly includes an air inlet to provide pressurized gas into the insertion hose through the air inlet.

2. The airtightness detection device according to claim 1, characterized in that: The first joint assembly includes: a first sealing joint, and the first sealing joint forms the accommodating space.

3. The airtightness detection device according to claim 2, characterized in that: The first sealing joint has an axial direction, one end of the inserted hose includes a passive bending section, along the axial direction, the length of the accommodating space is greater than or equal to the length of the passive bending section, wherein at least part of the passive bending section is located in the accommodating space.

4. The airtightness detection device according to claim 2, characterized in that: The first joint assembly comprises: a first fastening element, which is disposed on the first sealing joint and deforms at least a portion of the first sealing joint; and A first sealing component, at least a portion of which is located inside the first sealing joint, so that the first sealing component forms a sealing connection with the insertion hose through deformation of the first sealing joint.

5. The airtightness detection device according to claim 4, characterized in that: The first sealing component is provided with a through hole along its axial direction, and at least a portion of the insertion hose is located in the through hole of the first sealing component. When the first sealing component is squeezed by the first sealing joint, the inner wall of the through hole of the first sealing component is in sealing contact with the outer tube of the insertion hose.

6. The airtightness detection device according to claim 5, characterized in that: The first fastening element is provided with a through hole, and one end of the insertion hose can be inserted into the accommodating space through the through hole of the first fastening element.

7. The airtightness detection device according to claim 4, characterized in that: The first sealing joint comprises: a first seat component, the first seat component being configured to be easily accessible by a tool; and The cavity portion is arranged on one side of the first seat component, and the cavity portion and the first seat component form the accommodating space, wherein the first seat component has a center hole, and one end of the insertion hose is inserted into the accommodating space through the center hole.

8. The airtightness detection device according to claim 7, characterized in that: The first sealing joint further comprises: a first threaded component, the first threaded component is located on the other side of the first seat component, and the first threaded component comprises an external thread formed on its outer surface; wherein the first fastening element comprises an internal thread formed on its inner surface, so that the first fastening element and the first sealing joint are threadedly connected.

9. The airtightness detection device according to claim 8, characterized in that: The first sealing joint also includes: A first deformation portion, one end of which is connected to the first threaded component, and the other end of which is in contact with and matched with the inner surface of the first fastening element, so that the first deformation portion is deformed.

10. The airtightness detection device according to claim 9, characterized in that: The first deformation portion includes a plurality of deformation pieces, the deformation pieces are distributed along a preset circumference, and there is a gap between two adjacent deformation pieces in the circumferential direction.

11. The airtightness detection device according to claim 9, characterized in that: A step surface is provided at a connection between the first deformation portion and the first threaded component, and the step surface is used to limit a position of the first sealing component in an axial direction.

12. The airtightness detection device according to claim 1, characterized in that: The second joint assembly includes: a second sealing joint, and the second sealing joint includes an air inlet.

13. The airtightness detection device according to claim 12, characterized in that: The second joint assembly also includes: a second fastening element, which is disposed at the second sealing joint and deforms at least a portion of the second sealing joint; and A second sealing component, at least a portion of which is located inside the second sealing joint, so that the second sealing component forms a sealing connection with the insertion hose through deformation of the second sealing joint.

14. The airtightness detection device according to claim 13, characterized in that: The second sealing component is provided with a through hole along its axial direction, and at least a portion of the insertion hose is located in the through hole of the second sealing component. When the second sealing component is squeezed by the second sealing joint, the inner wall of the through hole of the second sealing component is in sealing contact with the outer tube of the insertion hose.

15. The airtightness detection device according to claim 13, characterized in that: The second fastening element is provided with a through hole, and the other end of the insertion hose can be inserted into the through hole of the second sealing component through the through hole of the second fastening element.

16. The airtightness detection device according to claim 13, characterized in that: The second sealing joint comprises: a second seat member configured to be easily accessible by a tool; and The air inlet portion is arranged at one side of the second seat component and comprises an air inlet port, wherein the second seat component has a central hole, and the air inlet port is communicated with the central hole.

17. The airtightness detection device according to claim 16, characterized in that: The second sealing joint further comprises: a second threaded component, the second threaded component is located on the other side of the second seat component, and the second threaded component comprises an external thread formed on its outer surface; wherein the second fastening element comprises an internal thread formed on its inner surface, so that the second fastening element and the second sealing joint are threadedly connected.

18. The airtightness detection device according to claim 17, characterized in that: The second sealing joint also includes: A second deformation portion, one end of which is connected to the second threaded component, and the other end of which is in contact with and matched with the inner surface of the second fastening element, so that the second deformation portion is deformed.

19. The airtightness detection device according to claim 18, characterized in that: The second deformation portion includes a plurality of deformation pieces, the deformation pieces are distributed along a preset circumference, and there is a gap between two adjacent deformation pieces in the circumferential direction.

20. The airtightness detection device according to claim 18, characterized in that: A step surface is provided at a connection between the second deformation portion and the second threaded component, and the step surface is used to limit a position of the second sealing component in the axial direction.

21. An airtightness detection system, characterized in that: It comprises a plurality of airtightness detection devices as described in any one of claims 1-20.

22. The airtightness detection system according to claim 21, characterized in that: Also includes: A leak detector is connected to the air inlet of each air tightness detection device through a pipeline.

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