Plug-in assembly for quick disassembly and assembly of pressure gauge

Abstract

The utility model provides a plug-in assembly for quick disassembly and assembly of a pressure gauge. The plug-in assembly comprises a driving component, a sleeving component and a fixing component, the sleeving component comprises a plurality of sleeving parts, and the sleeving parts are arranged in sequence, so that the sleeving component is of a cylindrical structure; a threaded connecting part and a fixing part are formed in the sleeving component; the fixing component is provided with a first connecting part, a second connecting part and a third connecting part; the driving component is of a cylindrical structure and is arranged on the fixing component and the second connecting part in a sleeving mode, and a first circular seam used for containing the first elastic piece is formed between the driving component, the part, close to the second connecting part, of the sleeving component and the second connecting part. The driving component moves in the first direction, the air inlet connector of the pressure gauge can be placed on the threaded connection part, and the air inlet connector of the pressure gauge can be locked to the threaded connection part when the driving part is stopped. The pressure gauge can be detached only by driving the driving component to move along the first direction again to open the threaded connection part, and the operation is simple and convenient.

Description

Technical Field

[0001] The present application relates to the technical field of connectors, and in particular to a plug-in assembly for quick disassembly and installation of a pressure gauge. Background Art

[0002] Pressure gauges, as sensitive components, are typically mounted on the device under test via connectors. They are also commonly used in thermal networks, oil and gas transmission, water and gas supply systems, and vehicle repair and maintenance shops. Mechanical pressure gauges are gaining increasing popularity in industrial process control and technical measurement, particularly due to their elastic sensitive elements' high mechanical strength and ease of production.

[0003] To ensure the normal use of pressure gauges, pressure gauge calibration is also a routine operation. Currently, during the pressure gauge calibration process, due to the single opening of traditional connectors, the pressure gauge needs to be screwed in or out to install or remove the pressure gauge. As a result, when the pressure gauge needs to be tested, it takes a long time to disassemble the pressure gauge, which reduces work efficiency.

[0004] Therefore, there is an urgent need for a plug-in assembly for quick disassembly and installation of a pressure gauge to solve the technical problems existing in the prior art to a certain extent. Utility Model Content

[0005] The purpose of the present application is to provide a plug-in assembly for quick disassembly and installation of a pressure gauge, which can, to a certain extent, enable the pressure gauge to be quickly installed on and quickly disassembled from the piece to be tested.

[0006] The present application provides a plug-in assembly for quick disassembly and installation of a pressure gauge, comprising a driving component, a sleeve component, and a fixing component;

[0007] The sleeve member includes a plurality of sleeve portions, which are sequentially arranged along the circumferential direction so that the sleeve member has a cylindrical structure; a threaded connection portion and a fixing portion are sequentially formed inside the sleeve member along a first direction;

[0008] The fixing member comprises a first connecting portion, a second connecting portion and a third connecting portion which are sequentially connected along the first direction; the fixing portion is sleeved on the first connecting portion;

[0009] The driving member is a cylindrical structure, which is sleeved on the fixing member and the second connecting portion, and a first annular gap is formed between the portion of the sleeve member close to the second connecting portion and the second connecting portion; a first elastic member is provided in the first annular gap;

[0010] When the driving member is driven to move along the first direction, the first elastic member is compressed, and the multiple sleeve parts move along the radial direction so that the diameter of the threaded connection part becomes larger, and the enlarged diameter is used to place the air inlet interface of the pressure gauge; when the driving member is stopped from being driven to move along the first direction, the first elastic member is reset, and the multiple sleeve parts are contracted along the radial direction to lock the air inlet interface of the pressure gauge to the threaded connection part.

[0011] In the above technical solution, further, the outer wall of the first connecting portion is sequentially formed with a plurality of first protruding stepped surfaces along the first direction; the interior of the first connecting portion is provided with a fixing hole extending along the first direction and communicating with the threaded connecting portion, and a sealing member is placed in the fixing hole;

[0012] The outer wall of the second connecting portion is sequentially formed with a plurality of second protruding stepped surfaces along the first direction; the outer wall of the third connecting portion is provided with a thread for connecting to the detection platform;

[0013] An air guide hole extending along the first direction is defined inside the second connection portion. One end of the air guide hole is connected to the fixing hole, and the other end passes through the third connection portion and is connected to the air outlet of the detection platform.

[0014] In the above technical solution, further, the sealing component includes a fixed gasket and a second elastic member;

[0015] The diameter of the fixing hole is larger than the diameter of the air guide hole;

[0016] One end of the second elastic member is connected to the fixing washer, and the other end abuts against the bottom wall of the second connecting portion;

[0017] When the second elastic member is at its maximum stroke, the fixing washer is higher than a preset height of the first connecting portion.

[0018] In the above technical solution, further, the fixing hole includes a first fixing hole segment and a second fixing hole segment connected along the first direction, the diameter of the first fixing hole segment is larger than the diameter of the second fixing hole segment, and the diameter of the second fixing hole segment is larger than the diameter of the air guide hole;

[0019] The fixing washer is arranged in the first fixing hole section, and the second elastic member is arranged in the second fixing hole section.

[0020] In the above technical solution, further, the sleeve portion is a sleeve plate with a preset curvature, and when a plurality of the sleeve plates are arranged in sequence along the circumferential direction, the sleeve member can be made into a cylindrical structure;

[0021] The inner side wall of the sleeve plate corresponding to the threaded connection portion has a thread;

[0022] The inner side wall of the sleeve plate corresponding to the fixing portion is sequentially formed with a plurality of concave stepped surfaces along the first direction; the concave stepped surfaces are adapted to the first convex stepped surfaces so that the fixing portion is sleeved on the first connecting portion.

[0023] In the above technical solution, further, a redundant groove is provided on the inner side wall of the sleeve plate corresponding to the threaded connection portion and close to the first connection portion.

[0024] In the above technical solution, further, a second annular gap is provided between the first convex stepped surface close to the second connecting portion and the corresponding concave stepped surface on the first connecting portion;

[0025] When the plurality of sleeve portions move in the radial direction, the second annular gap provides space for the fixing portion to move.

[0026] In the above technical solution, further, a fastening groove is provided on the outer side wall of the sleeve plate near the second connecting portion;

[0027] The fastening groove is used for sleeve-mounting the third elastic member.

[0028] In the above technical solution, further, the driving member includes a driving cylinder;

[0029] The driving cylinder is provided with a first mounting groove corresponding to a portion of the sleeve component close to the second connecting portion and a portion corresponding to the second connecting portion, so that the first annular gap is formed between the driving cylinder and the portion of the sleeve component close to the second connecting portion and the second connecting portion.

[0030] In the above technical solution, further, the inner side wall of the driving cylinder close to the third connecting portion is provided with a second mounting groove for mounting a clip spring;

[0031] A limiting groove is provided at one end of the inner side wall of the driving cylinder away from the third connecting part, and the sleeve plate corresponds to a limiting protrusion protruding toward the driving cylinder at the bottom of the second mounting groove; when the driving cylinder moves along the first direction, the limiting protrusion can be engaged with the limiting groove.

[0032] Compared with the prior art, this application has the following beneficial effects:

[0033] The present application provides a plug-in assembly for quick disassembly and installation of a pressure gauge, comprising a driving component, a sleeve component, and a fixing component;

[0034] The sleeve member includes a plurality of sleeve portions, which are sequentially arranged along the circumferential direction so that the sleeve member has a cylindrical structure; a threaded connection portion and a fixing portion are sequentially formed inside the sleeve member along a first direction;

[0035] The fixing member comprises a first connecting portion, a second connecting portion and a third connecting portion which are sequentially connected along the first direction; the fixing portion is sleeved on the first connecting portion;

[0036] The driving member is a cylindrical structure, which is sleeved on the fixing member and the second connecting portion, and a first annular gap is formed between the portion of the sleeve member close to the second connecting portion and the second connecting portion; a first elastic member is provided in the first annular gap;

[0037] When the driving member is driven to move along the first direction, the first elastic member is compressed, and the multiple sleeve parts move along the radial direction so that the diameter of the threaded connection part becomes larger, and the enlarged diameter is used to place the air inlet interface of the pressure gauge; when the driving member is stopped from being driven to move along the first direction, the first elastic member is reset, and the multiple sleeve parts are contracted along the radial direction to lock the air inlet interface of the pressure gauge to the threaded connection part.

[0038] In summary, the present application can place the air inlet interface of the pressure gauge on the threaded connection portion by driving the driving member to move in the first direction, and then stop driving the driving member to lock the air inlet interface of the pressure gauge to the threaded connection portion. Similarly, when the pressure gauge is to be removed, it is only necessary to drive the driving member to move in the first direction again to open the threaded connection portion. The entire operation is simple and convenient. Compared with the existing screw-in and screw-out method, the present application can quickly install the pressure gauge on the test piece and quickly remove it from the test piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 A schematic structural diagram of the plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application from a first perspective;

[0041] Figure 2 A schematic diagram of the structure of the plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application from a second perspective;

[0042] Figure 3 A cross-sectional view of a plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application;

[0043] Figure 4 A schematic structural diagram of a driving component in a plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application;

[0044] Figure 5 A cross-sectional view of a driving component in a plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application;

[0045] Figure 6 A schematic structural diagram of a hidden drive component in a plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application;

[0046] Figure 7 A schematic structural diagram of a sleeve component in a plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application;

[0047] Figure 8 A schematic structural diagram of a fixing member in a plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application, viewed from a first perspective;

[0048] Figure 9 This is a schematic structural diagram of the fixing component in the plug-in assembly for quick disassembly and installation of a pressure gauge provided in this application, viewed from a second perspective.

[0049] Figure markings: 2-sleeving part; 3-first direction; 4-threaded connection part; 5-fixing part; 6-first connection part; 7-second connection part; 8-third connection part; 9-first annular gap; 10-first protruding step surface; 11-fixing hole; 12-second protruding step surface; 13-air guide hole; 14-first fixing hole section; 15-second fixing hole section; 16-sleeving plate; 18-redundant groove; 19-second annular gap; 20-fastening groove; 21-driving cylinder; 22-first mounting groove; 23-second mounting groove; 24-limiting groove; 25-limiting protrusion. DETAILED DESCRIPTION

[0050] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.

[0051] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0052] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements intervening therebetween.

[0053] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0054] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.

[0055] For ease of description, spatial relational terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations "above" and "below," depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0056] The terms used herein are intended only to describe various examples and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, the singular is intended to include the plural. The terms "comprise," "include," and "have" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0057] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.

[0058] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0059] The present application provides a plug-in assembly for quick disassembly and installation of a pressure gauge, which can, to a certain extent, quickly install the pressure gauge on the piece to be tested and quickly remove it from the piece to be tested; Figures 1-9 As shown, taking the test piece as the test bench as an example, the plug-in assembly for quick disassembly and installation of the pressure gauge is explained in detail.

[0060] A plug-in assembly for quick disassembly and installation of a pressure gauge comprises a driving component, a sleeve component and a fixing component.

[0061] Specifically, the sleeve component includes a plurality of sleeve parts 2, which are arranged in sequence along the circumferential direction so that the sleeve component has a cylindrical structure; the interior of the sleeve component is sequentially formed with a threaded connection part 4 and a fixing part 5 along a first direction 3; further, after the plurality of sleeve parts 2 are arranged in the circumferential direction, the interior thereof is sequentially formed with a threaded connection part 4 and a fixing part 5 along a first direction 3; the threaded connection part 4 is used to connect the air inlet interface of the pressure gauge, and the fixing part 5 is used to sleeve the fixing component. Figure 3 Taking the angle of placement in the middle as an example, the first direction 3 is the vertical downward direction. Figure 1 、 Figure 6 as well as Figure 7 As shown, there are six sleeve parts 2, that is, the six sleeve parts 2 are arranged in sequence along the circumferential direction so that the sleeve component has a cylindrical structure.

[0062] Specifically, combined Figure 6 、 Figure 8 as well as Figure 9As shown, the fixing member comprises a first connecting portion 6, a second connecting portion 7 and a third connecting portion 8 sequentially connected along a first direction 3; the fixing portion 5 is sleeved on the first connecting portion 6. The third fixing portion 5 is used to connect to the detection platform.

[0063] Specifically, combined Figure 3 、 Figure 4 as well as Figure 5 As shown, the driving member is a cylindrical structure that is sleeved over the fixing member and the second connecting portion 7; that is, the cylindrical driving member has an installation space that can accommodate the fixing member and the second connecting portion 7. Furthermore, a first annular gap 9 is formed between the driving member and the portion of the sleeve member near the second connecting portion 7 and the second connecting portion 7; a first elastic member is disposed within the first annular gap 9; preferably, the first elastic member is a spring.

[0064] During operation, the driving member is first driven in the first direction 3, compressing the first elastic member and radially moving the multiple sleeve portions 2, thereby increasing the diameter of the threaded connection portion 4. This increased diameter accommodates the air inlet port of the pressure gauge. The driving member is then stopped in the first direction 3, causing the first elastic member to return to its original position and the multiple sleeve portions 2 to contract radially. The air inlet port of the pressure gauge is now locked to the threaded connection portion 4.

[0065] In summary, the present application can place the air inlet interface of the pressure gauge on the threaded connection portion 4 by driving the driving member to move along the first direction 3, and then stop driving the driving member to lock the air inlet interface of the pressure gauge to the threaded connection portion 4. Similarly, when the pressure gauge is to be removed, it is only necessary to drive the driving member to move along the first direction 3 again to open the threaded connection portion 4. The entire operation is simple and convenient. Compared with the existing screw-in and screw-out method, the present application can quickly install the pressure gauge on the test piece and quickly remove it from the test piece.

[0066] In this embodiment, specifically, Figure 8 As shown, the outer wall of the first connecting portion 6 is sequentially formed with a plurality of first convex stepped surfaces 10 along the first direction 3 (in Figure 8 4 first protruding stepped surfaces 10 are shown, namely, first protruding stepped surface 10 No. 1, first protruding stepped surface 10 No. 2, first protruding stepped surface 10 No. 3, and first protruding stepped surface 10 No. 4 from top to bottom. Furthermore, it can be understood that the first connecting portion 6 includes four circular rings, each of which is formed with one first protruding stepped surface 10.

[0067] Specifically, a fixing hole 11 extending along the first direction 3 and communicating with the threaded connection part 4 is defined inside the first connection part 6 , and a sealing member is placed in the fixing hole 11 .

[0068] Specifically, the outer wall of the second connecting portion 7 is sequentially formed with a plurality of second protruding stepped surfaces 12 along the first direction 3 ; preferably, there are two second protruding stepped surfaces 12 , which can be understood as: the second connecting portion 7 includes two circular rings, each of which is formed with one second protruding stepped surface 12 .

[0069] Specifically, the outer side wall of the third connecting portion 8 is provided with a thread for connecting to the detection platform.

[0070] Specifically, the interior of the second connection portion 7 defines an air guide hole 13 extending along the first direction 3. One end of the air guide hole 13 is connected to the fixing hole 11, and the other end passes through the third connection portion 8 and communicates with the air outlet of the test bench. In other words, when the pressure gauge's air inlet port is tightened to the threaded connection portion 4, the air inlet port precisely connects to the air outlet of the test bench.

[0071] In this embodiment, further, the sealing member (the sealing member is not shown in the figure, and the following description will be understood by those skilled in the art) includes a fixed gasket and a second elastic member.

[0072] Specifically, the diameter of the fixing hole 11 is larger than the diameter of the air guide hole 13; one end of the second elastic member is connected to the fixing washer, and the other end abuts against the bottom wall of the second connecting part 7; when the second elastic member is at the maximum stroke, the fixing washer is higher than the preset height of the first connecting part 6.

[0073] Preferably, the second elastic member is a spring.

[0074] Furthermore, the air inlet interface of the pressure gauge includes a threaded mounting portion and an air inlet connection portion. The fixing washer is provided with a through hole having the same diameter as the air inlet connection portion.

[0075] During actual use, when the threaded mounting portion of the pressure gauge is locked on the threaded connection portion 4, the air inlet connection portion abuts against the fixed washer, and the air inlet connection portion corresponds to the through hole, so that the air inlet interface can be connected to the air outlet of the test bench.

[0076] In summary, when the second elastic member is at its maximum travel, the fixed washer is elevated above the first connecting portion 6 by a predetermined height. This means that when the second spring is not in use, i.e., in its natural state, the fixed washer is elevated above the first connecting portion 6. However, it is worth noting that this elevation is only slight, not completely elevated above the first connecting portion 6. Therefore, when the air intake connection portion abuts the fixed washer, the second elastic member is compressed, exerting a certain elastic force. This elastic force reacts against the fixed washer, causing the fixed washer and the air intake connection portion to tightly abut against each other, thus ensuring overall sealing.

[0077] In addition, in the process of installing the air inlet interface of the pressure gauge on the plug-in assembly of the present application, the threads on the threaded connection part 4 may not correspond to the threads on the threaded mounting part, which is often called improper installation. Since the present application is provided with a second elastic member, as long as the air inlet interface of the pressure gauge is released by hand, the air inlet interface of the pressure gauge will be popped out under the reaction force of the second spring, and the threads on the threaded connection part 4 will correspond to the threads on the threaded mounting part. That is, for the situation of improper installation, the present application does not require manual adjustment with tools, and the position of the threaded connection can be automatically corrected through the rebound force of the second elastic member, thereby ensuring the accuracy of installation and convenient operation.

[0078] In this embodiment, further, combined with Figure 3 As shown, the fixing hole 11 includes a first fixing hole segment 14 and a second fixing hole segment 15 that are connected along the first direction 3. The diameter of the first fixing hole segment is larger than the diameter of the second fixing hole segment 15, and the diameter of the second fixing hole segment 15 is larger than the diameter of the air guide hole 13. A fixing washer is provided in the first fixing hole segment, and a second elastic member is provided in the second fixing hole segment 15.

[0079] Since the diameter of the first fixing hole section is larger than that of the second fixing hole section 15 , a step is formed between the first fixing hole section and the second fixing hole section 15 , and the maximum stroke position of the fixing gasket pressed down by the intake connection part is abutting against the step position.

[0080] In this embodiment, further, combined with Figure 6 As shown in the figure, the sleeve portion 2 is a sleeve plate 16 with a preset curvature. When a plurality of sleeve plates 16 are arranged in sequence along the circumferential direction, the sleeve component can be made into a cylindrical structure.

[0081] Specifically, the inner side wall of the sleeve plate 16 has threads corresponding to the threaded connection portion 4, and the threads can be adapted to the threaded mounting portion of the pressure transformer.

[0082] Specifically, the inner side wall of the sleeve plate 16 corresponding to the fixing portion 5 is sequentially formed with a plurality of concave stepped surfaces along the first direction 3; the concave stepped surfaces are adapted to the first convex stepped surfaces 10, so that the fixing portion 5 is sleeved on the first connecting portion 6. Figure 3 As shown, there are four concave stepped surfaces, which correspond one-to-one to the four first convex stepped surfaces 10 mentioned above.

[0083] Further, combined with Figure 3 As shown, a redundant groove 18 is formed on the inner side wall of the sleeve plate 16 corresponding to the threaded connection portion 4 and close to the first connection portion 6; the redundant groove 18 is annular.

[0084] During the actual testing process, since the pressure gauge is used for a long time, the threads of the threaded mounting part near the air inlet connection part will be damaged, and the damaged threads cannot be adapted to the threads of the threaded connection part 4. Therefore, a redundant groove 18 is opened on the inner side wall of the sleeve plate 16 corresponding to the threaded connection part 4 and close to the first connection part 6. This redundant groove 18 is used to place the damaged threaded mounting part.

[0085] In this embodiment, further, a second annular gap 19 is provided between the first convex stepped surface 10 on the first connecting portion 6 close to the second connecting portion 7 and the corresponding concave stepped surface.

[0086] In actual use, combined with Figure 3 As shown, when the multiple sleeve portions 2 move in the radial direction, the second annular gap 19 provides space for the movement of the fixing portion 5. Furthermore, when the multiple sleeve portions 2 open and move in the radial direction, the position of the sleeve plate 16 corresponding to the threaded connection portion 4 will be greatly opened, while the position of the sleeve plate 16 corresponding to the fixing portion 5 will only undergo a slight displacement, and still move toward the first connection portion 6. In this case, the second annular gap 19 provides space for the movement of the fixing portion 5.

[0087] In this embodiment, further, combined with Figure 3 As shown, a fastening groove 20 is formed on the outer wall of the sleeve plate 16 near the second connecting portion 7. The fastening groove 20 is used for sleeve mounting the third elastic member.

[0088] Preferably, the third elastic member is a rubber ring having a certain elastic force.

[0089] Specifically, the rubber ring can fasten the six sleeve plates 16 together to prevent the six sleeve plates 16 from loosening.

[0090] In this embodiment, further, combined with Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the drive member comprises a drive cylinder 21 .

[0091] Specifically, a first mounting groove 22 is provided in the portion of the driving cylinder 21 corresponding to the sleeve component close to the second connecting portion 7 and the portion corresponding to the second connecting portion 7, so that a first annular gap 9 is formed between the driving cylinder 21 and the portion of the sleeve component close to the second connecting portion 7 and the second connecting portion 7.

[0092] Furthermore, a second mounting groove 23 for mounting a retaining spring is formed on the inner side wall of the driving cylinder 21 close to the third connecting portion 8 .

[0093] Furthermore, a limiting groove 24 is defined on the inner sidewall of the driving cylinder 21 at one end facing away from the third connecting portion 8, and a limiting protrusion 25 is formed on the sleeve plate 16, corresponding to the bottom of the second mounting groove 23 and projecting toward the driving cylinder 21. In actual use, when the driving cylinder 21 moves in the first direction 3, the limiting protrusion 25 can engage with the limiting groove 24, thereby allowing the sleeve portion 2 to open to a certain extent.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A plug-in assembly for quick disassembly and installation of a pressure gauge, characterized in that: It includes a driving component, a sleeve component and a fixing component; The sleeve member includes a plurality of sleeve portions, which are sequentially arranged along the circumferential direction so that the sleeve member has a cylindrical structure; a threaded connection portion and a fixing portion are sequentially formed inside the sleeve member along a first direction; The fixing member comprises a first connecting portion, a second connecting portion and a third connecting portion which are sequentially connected along the first direction; the fixing portion is sleeved on the first connecting portion; The driving member is a cylindrical structure, which is sleeved on the fixing member and the second connecting portion, and a first annular gap is formed between the portion of the sleeve member close to the second connecting portion and the second connecting portion; a first elastic member is provided in the first annular gap; When the driving member is driven to move along the first direction, the first elastic member is compressed, and the multiple sleeve parts move along the radial direction so that the diameter of the threaded connection part becomes larger, and the enlarged diameter is used to place the air inlet interface of the pressure gauge; when the driving member is stopped from being driven to move along the first direction, the first elastic member is reset, and the multiple sleeve parts are contracted along the radial direction to lock the air inlet interface of the pressure gauge to the threaded connection part.

2. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 1, characterized in that: The outer wall of the first connection portion is sequentially formed with a plurality of first protruding stepped surfaces along the first direction; a fixing hole extending along the first direction and communicating with the threaded connection portion is formed inside the first connection portion, and a sealing member is placed in the fixing hole; The outer wall of the second connecting portion is sequentially formed with a plurality of second protruding stepped surfaces along the first direction; the outer wall of the third connecting portion is provided with a thread for connecting to the detection platform; An air guide hole extending along the first direction is defined inside the second connection portion. One end of the air guide hole is connected to the fixing hole, and the other end passes through the third connection portion and is connected to the air outlet of the detection platform.

3. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 2, characterized in that: The sealing member includes a fixed washer and a second elastic member; The diameter of the fixing hole is larger than the diameter of the air guide hole; One end of the second elastic member is connected to the fixing washer, and the other end abuts against the bottom wall of the second connecting portion; When the second elastic member is at its maximum stroke, the fixing washer is higher than a preset height of the first connecting portion.

4. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 3, characterized in that: The fixing hole includes a first fixing hole segment and a second fixing hole segment connected along the first direction, the diameter of the first fixing hole segment is larger than the diameter of the second fixing hole segment, and the diameter of the second fixing hole segment is larger than the diameter of the air guide hole; The fixing washer is arranged in the first fixing hole section, and the second elastic member is arranged in the second fixing hole section.

5. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 2, characterized in that: The sleeve portion is a sleeve plate having a preset curvature. When a plurality of the sleeve plates are arranged in sequence along the circumferential direction, the sleeve member can be made into a cylindrical structure. The inner side wall of the sleeve plate corresponding to the threaded connection portion has a thread; The inner side wall of the sleeve plate corresponding to the fixing portion is sequentially formed with a plurality of concave stepped surfaces along the first direction; the concave stepped surfaces are adapted to the first convex stepped surfaces so that the fixing portion is sleeved on the first connecting portion.

6. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 5, characterized in that: The sleeve plate body is provided with a redundant groove at a position corresponding to the inner side wall of the threaded connection portion and close to the first connection portion.

7. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 5, characterized in that: A second annular gap is provided between the first convex stepped surface close to the second connecting portion and the corresponding concave stepped surface on the first connecting portion; When the plurality of sleeve portions move in the radial direction, the second annular gap provides space for the fixing portion to move.

8. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 5, characterized in that: A fastening groove is formed on the outer side wall of the sleeve plate near the second connecting portion; The fastening groove is used for sleeve-mounting the third elastic member.

9. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 5, characterized in that: The driving member includes a driving cylinder; The driving cylinder is provided with a first mounting groove corresponding to a portion of the sleeve component close to the second connecting portion and a portion corresponding to the second connecting portion, so that the first annular gap is formed between the driving cylinder and the portion of the sleeve component close to the second connecting portion and the second connecting portion.

10. The plug-in assembly for quick disassembly and installation of a pressure gauge according to claim 9, characterized in that: The inner side wall of the driving cylinder close to the third connecting portion is provided with a second mounting groove for mounting a retaining spring; A limiting groove is formed on one end of the inner side wall of the driving cylinder away from the third connecting portion, and a limiting protrusion is protruded from the sleeve plate toward the driving cylinder corresponding to the bottom of the second mounting groove; When the driving cylinder moves along the first direction, the limiting protrusion can be engaged with the limiting groove.

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