Air conditioning system pressure sensor quick connector

Abstract

The utility model relates to a factory building air conditioning technical field, specifically disclose a kind of air conditioning system pressure sensor quick connector, including the plug-in pipe for installing pressure sensor, with the coaxial communication of plug-in pipe and the sleeve of being wrapped in plug-in pipe outside, the sleeve of being wrapped in sleeve outside and for the fixing assembly of the sleeve and plug-in pipe fixed;The pressure sensor is located in sleeve, plug-in pipe and sleeve seal fit;Fixing assembly includes the locking mechanism of being wrapped in sleeve outside and with the rotation cooperation of sleeve, the locking mechanism of being wrapped in sleeve outside and passing through sleeve and with the plug-in fit of plug-in pipe outside, and the elastic abutment of being elastically connected with locking mechanism and located sleeve outside;The utility model can effectively realize the quick installation of pressure sensor disassembly, and need not tool auxiliary realization convenient disassembly, effectively solved the problem that traditional device disassembly is complicated, maintenance is difficult, improved maintenance efficiency, realized convenient operation, with good sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of factory air conditioning technology, and more specifically, to a quick connector for an air conditioning system pressure sensor. Background Technology

[0002] In the field of energy-saving monitoring of factory air conditioning, pressure sensors installed inside refrigerant pipes, cooling water pipes, heat exchange pipes, etc., of the air conditioning system are used to monitor pressure changes in the system, ensure the efficient operation and stability of the air conditioning equipment, and promptly detect possible system problems (such as pipe blockage, leakage, compressor failure, etc.). Through these pressure sensors, the air conditioning system can be adjusted in real time to optimize energy use and prevent equipment damage. However, the current air conditioning energy-saving monitoring devices on the market still have many technical defects in practical applications. These problems not only affect the efficiency of system maintenance, but may also lead to equipment damage and operational failures.

[0003] The primary problem is the unreasonable design of the pressure sensor installation structure, and the existing monitoring devices have significant defects: First, the pipeline disassembly and assembly structure is complex, which increases the difficulty of maintaining the pressure sensor; second, the pressure sensor replacement process is cumbersome, which prolongs the maintenance time and increases the labor intensity of workers. This design deficiency not only reduces maintenance efficiency, but may also cause system damage due to improper operation, affecting system operation and increasing maintenance costs and operational difficulty.

[0004] More prominently, the sealing performance of pipeline connections is imperfect. Although some equipment has achieved quick connection, there are serious problems. The sealing structure is simple, and gaps are easily generated at the connection, which can easily lead to fluid leakage. System pressure fluctuations can easily cause seal failure. This design deficiency not only affects the operating efficiency of the system, but may also lead to energy waste or environmental pollution due to leakage, affecting operational safety and system performance.

[0005] Crucially, the connection structure suffers from poor stability. While some equipment achieves convenient pipeline installation through quick-connect mechanisms, serious problems exist: First, the connection structure design is simple and lacks reliability; second, fluid pressure impacts can easily cause the structure to loosen; third, vibrations generated during equipment operation can easily cause displacement at the connection point; furthermore, the connection strength is prone to decrease after long-term operation. This design deficiency not only affects the reliability of the connection but may also lead to system failures and fluid leaks due to structural failure. This structural defect not only reduces the service life of the equipment but may also lead to safety hazards due to poor stability, affecting system safety and operational efficiency. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a quick connector for a pressure sensor in an air conditioning system; The solution adopted by this utility model to solve the technical problem is: A quick connector for a pressure sensor in an air conditioning system includes a connector for mounting the pressure sensor, a sleeve coaxially connected to the connector and fitted outside the connector, and a fixing assembly fitted outside the sleeve for fixing the sleeve and the connector; the pressure sensor is located inside the sleeve, and the connector is sealed to the sleeve. The fixing assembly includes a locking mechanism fitted on the outside of the sleeve and rotatably engaged with the sleeve, a tightening mechanism fitted on the outside of the sleeve, passing through the sleeve and inserted into the outside of the insertion tube, and an elastic abutment member elastically connected to the tightening mechanism and located on the outside of the sleeve; the tightening mechanism is located between the locking mechanism and the elastic abutment member.

[0007] In some possible implementations, the locking mechanism includes a control sleeve fitted on the outside of the sleeve and located between the locking mechanism and the sleeve at one end near the locking mechanism; a reducing bracket fitted on the outside of the sleeve and inserted into the control sleeve at the end away from the locking mechanism; a snap-fit ​​member slidably mounted on the reducing bracket and having one end pass through the sleeve and inserted into the outside of the insertion tube; and an elastic connector disposed on the side of the control sleeve near the locking mechanism for connecting the sleeve and the control sleeve; the end of the reducing bracket away from the locking mechanism is elastically engaged with the elastic abutment member.

[0008] In some possible implementations, a top block that abuts against the snap-fit ​​member and a linkage groove that inserts into the reducer are provided on the side of the control sleeve near the reducer; an annular snap-fit ​​groove for use with the snap-fit ​​member is provided on the outer side of the insertion tube; and a locking groove for insertion into the elastic connector is provided on the outer side of the sleeve.

[0009] In some possible implementations, the control sleeve includes a body fitted over the outside of the sleeve, and an annular plate disposed on the side of the body near the locking mechanism and fitted over the outside of the sleeve; the elastic connector is mounted on the annular plate. The elastic connector includes a locking rod arranged radially along the sleeve and extending into the locking groove through the annular plate at one end, and a connecting spring installed on the outside of the annular plate and connected to the other end of the locking rod, wherein the connecting spring is fitted on the outside of the locking rod.

[0010] In some possible implementations, the variable diameter frame includes two sets of identical ring frames fitted on the outside of the sleeve, a connecting plate located outside the two sets of ring frames and used to connect the two sets of ring frames, an arc plate connected to the side of the connecting plate away from the ring frame and forming an arc-shaped variable diameter groove between the connecting plate and the outside of the ring frame, and a linkage block disposed on the ring frame near the locking mechanism and inserted into the control sleeve. Between the two sets of ring frames, the arc plates are set one-to-one to form mounting grooves for installing snap-fit ​​parts; The distance between the inner side of the arc-shaped variable diameter groove and the center of the sleeve is greater than the distance between the inner side of the arc-shaped variable diameter groove and the center of the sleeve; the inner and outer sides of the arc-shaped variable diameter groove have the same structure and are equally spaced.

[0011] In some possible implementations, the snap-fit ​​component includes a cross-shaped fitting bracket installed in the arc-shaped reducing groove, and a snap-fit ​​rod connected to the fitting bracket near the sleeve side; The locking rod includes an upper rod disposed between the control sleeve and the annular frame near the control sleeve and connected to the mating frame, a middle rod located between the two sets of annular frames and connected to the mating frame, and a lower rod located at the bottom of the annular frame away from the control sleeve and connected to the mating frame; the upper rod abuts against the top block.

[0012] In some possible implementations, the sleeve is provided with a waist-shaped groove through which the snap-fit ​​rod passes, the long axis of the waist-shaped groove being arranged along the axial direction of the sleeve, and the annular snap-fit ​​groove being three sets and corresponding to the snap-fit ​​rod.

[0013] In some possible implementations, the elastic abutment includes an annular boss disposed on the outside of the sleeve and a push spring mounted on the annular boss and axially arranged radially along the sleeve; the push spring is disposed between the reducing bracket and the annular boss and is in a compressed state when the insertion tube is locked to the sleeve.

[0014] In some possible implementations, the locking mechanism includes a shifting plate fitted onto the outside of the sleeve and sealingly fitted with the sleeve, a push plate inserted into the shifting plate and fitted onto the outside of the sleeve, a shifting rod disposed near one end of the push plate and inserted into the shifting plate, and a shifting spring mounted on the push plate and fitted onto the outside of the shifting rod; a shifting hole is provided on the shifting plate for inserting into the shifting rod; the push plate is disposed between the shifting plate and the locking mechanism; an annular groove is formed between the end of the push plate near the locking mechanism and the sleeve, and the end of the locking mechanism near the push plate is inserted into the annular groove.

[0015] In some possible implementations, the insertion tube includes a main tube and a secondary tube coaxially arranged with the main tube and having a pressure sensor installed at the end away from the main tube; the sleeve includes a first tube fitted over the outside of the main tube and a second tube coaxially connected to the main tube; the secondary tube passes through the first tube and extends into the second tube, the outer diameter of the first tube is larger than the outer diameter of the second tube and they cooperate to form a support surface, and a sealing sleeve is installed on the support surface; the inner diameter of the first tube is larger than the inner diameter of the second tube and forms an abutment surface that cooperates with the support surface; a sealing ring is fitted over the outside of the secondary tube, and a sealing groove is provided on the inside of the second tube to cooperate with the sealing ring.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model constructs a complete quick connection system through the precise cooperation of the insertion pipe, control sleeve, snap-fit ​​component, sleeve, reducer, arc-shaped reducer groove, linkage groove, mating frame, linkage block, waist-shaped slot, top block, annular snap-fit ​​groove, and mounting frame. The sleeve design provides the installation foundation, the cooperation between the insertion pipe, snap-fit ​​component, and annular snap-fit ​​groove achieves snap-fit, and the linkage between the reducer and control sleeve ensures convenient operation. This structure not only achieves rapid installation and disassembly of the pressure sensor through mechanical linkage, but also achieves convenient disassembly and assembly without the need for tools. It effectively solves the problems of cumbersome disassembly and assembly and difficult maintenance of traditional devices, improves maintenance efficiency, and achieves convenient operation. This utility model forms a multi-seal system through the coordinated work of sealing rings, sealing grooves, and sealing sleeves. The opening of the sealing groove provides the installation foundation, the cooperation of multiple sealing rings and sealing grooves achieves multi-layer sealing, and the setting of the sealing sleeve ensures compression sealing. This structure not only achieves reliable sealing at the connection through multiple seals, but also ensures uniform sealing through the ring design, effectively solving the problems of poor sealing and easy leakage of traditional devices, and improving the sealing effect. This invention constructs a reliable locking system through the precise cooperation of components such as a shift plate, shift hole, push plate, and shift rod. The rotational design of the shift plate provides the basis for operation, the cooperation between the push plate and the shift rod realizes position locking, and the setting of the shift spring ensures automatic reset. This structure not only achieves stable fixation of the connection structure through multiple locking, but also provides automatic reset through the elastic mechanism, and the rounded corner design ensures smooth operation. It effectively solves the problem of structural loosening of traditional devices under pressure impact and vibration, adapts to harsh environments, and ensures long-term stability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the dispersed structure in this utility model; Figure 3 This is a cross-sectional view of the structure of this utility model; Figure 4 This is a structural schematic diagram of the control sleeve and the snap-fit ​​part in this utility model; Figure 5 This is a schematic diagram of the sleeve and reducing bracket in this utility model; Figure 6 This is a structural schematic diagram of the variable diameter bracket and snap-fit ​​component in this utility model; Figure 7 This is a cross-sectional view of the assembled version of this utility model; in: 1. Pressure sensor; 2. Connector; 201. Supervisor; 202. Deputy Supervisor; 3. Control kit; 4. Snap-fit ​​connectors; 5. Sleeve; 501, Pipe 1; 502, Pipe 2; 6. Variable diameter frame; 61. Ring frame; 61. Connecting plate; 63. Arc plate; 7. Arc-shaped variable diameter groove; 8. Linkage groove; 9. Fitting frame; 91. Connecting rod; 10. Linkage block; 11. Waist-shaped groove; 12. Top block; 13. Annular snap-fit ​​groove; 14. Mounting bracket; 15. Shift plate; 16. Displacement hole; 17. Push the sleeve; 18. Shift rod; 19. Sealing ring; 20. Sealing groove; 21. Sealing sleeve; 22. Shifting spring; 23. Push plate; 24. Lock slot; 25. Locking bar; 26. Connecting spring; 27. Push spring. Detailed Implementation

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple sets" means two or more. For example, multiple sets of positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] The present invention will now be described in detail.

[0020] like Figures 1-7 As shown; This utility model provides a quick connector for a pressure sensor in an air conditioning system, including a connector 2 for installing a pressure sensor 1, a sleeve 5 coaxially connected to the connector 2 and fitted outside the connector 2, and a fixing assembly fitted outside the sleeve 5 for fixing the sleeve 5 and the connector 2; the pressure sensor 1 is located inside the sleeve 5, and the connector 2 and the sleeve 5 are sealed together. The fixing assembly includes a locking mechanism that is fitted on the outside of the sleeve 5 and rotates with the sleeve 5, a tightening mechanism that is fitted on the outside of the sleeve 5, passes through the sleeve 5 and is inserted into the outside of the insertion tube 2, and an elastic abutment that is elastically connected to the tightening mechanism and located on the outside of the sleeve 5; the tightening mechanism is located between the locking mechanism and the elastic abutment. Pressure sensor 1 is installed at one end of insertion tube 2 and fitted inside sleeve 5. Assembly is achieved through the cooperation of locking mechanism, tightening mechanism and elastic abutment. Pressure sensor 1 effectively performs pressure testing, while sleeve 5 and insertion tube 2 are sealed together to prevent fluid leakage. After assembly, the tightening mechanism is connected and fixed by abutting its two ends with the locking mechanism and elastic abutment respectively. The elastic abutment will always apply an elastic force along the axial direction of sleeve 5 to the tightening mechanism after assembly, so that the connection between insertion tube 2 and sleeve 5 is reliable.

[0021] In some possible implementations, in order to effectively lock and fix the insertion tube 2 and the sleeve 5 through the locking mechanism and to enable the insertion tube 2 and the sleeve 5 to be quickly separated when needed; The locking mechanism includes a control sleeve 3 fitted on the outside of the sleeve 5 and located between the locking mechanism and the sleeve 5 at one end near the locking mechanism; a reducing bracket 6 fitted on the outside of the sleeve 5 and inserted into the control sleeve 3 at the end away from the locking mechanism; a snap-fit ​​member 4 slidably mounted on the reducing bracket 6 and with one end passing through the sleeve 5 and inserted into the outside of the insertion tube 2; and an elastic connecting member disposed on the side of the control sleeve 3 near the locking mechanism for connecting the sleeve 5 and the control sleeve 3; the end of the reducing bracket 6 away from the locking mechanism is elastically engaged with the elastic abutment member; the control sleeve 3 and the sleeve 5 are rotatably engaged; When the sleeve 5 and the insertion tube 2 are locked and fixed, the side of the control sleeve 3 near the locking mechanism will be located between the locking mechanism and the sleeve 5. The elastic connector will be limited by the locking mechanism and cannot move, thus limiting and fixing the control sleeve 3. At this time, the snap-fit ​​4 will pass through the sleeve 5 and be inserted into the insertion tube 2. The side of the snap-fit ​​4 near the insertion tube 2 will abut against the control sleeve 3. The elastic abutment will apply force to the reducer 6, so that the snap-fit ​​4 and the control sleeve 3 always remain in contact, preventing the snap-fit ​​4 from moving radially along the sleeve 5, thus achieving the connection and fixation of the insertion tube 2 and the sleeve 5. When the sleeve 5 and the insertion tube 2 need to be separated, the locking mechanism no longer limits the control sleeve 3, and controls the control sleeve 3 to rotate around the axis of the sleeve 5. The control sleeve 3 and the snap-fit ​​4 will change from the contact state to the separation state. At the same time, due to the insertion of the reducer 6 and the control sleeve 3, the rotation of the control sleeve 3 will drive the reducer 6 to rotate and drive the snap-fit ​​4 to move along the radial direction of the sleeve 5, so that it no longer inserts into the insertion tube 2; thus, the insertion tube 2 and the sleeve 5 are separated.

[0022] In some possible implementations, in order to effectively control the sleeve 3 and the snap-fit ​​member 4 to achieve abutment engagement and enable the control sleeve 3 to drive the reducer frame 6 to rotate, a top block 12 that abuts against the snap-fit ​​member 4 and a linkage groove 8 that inserts into the reducer frame 6 are provided on the side of the control sleeve 3 near the reducer frame 6; an annular snap-fit ​​groove 13 that cooperates with the snap-fit ​​member 4 is provided on the outer side of the insertion tube 2; and a locking groove 24 that is inserted into the elastic connector is provided on the outer side of the sleeve 5. The variable diameter frame 6 includes two sets of identical ring frames 61 fitted on the outside of the sleeve 5, a connecting plate 62 located outside the two sets of ring frames 61 and used to connect the two sets of ring frames 61, an arc plate 63 connected to the side of the connecting plate 62 away from the ring frame 61 and forming an arc-shaped variable diameter groove 7 between it and the outside of the ring frame 61, and a linkage block 10 disposed on the ring frame 61 near the locking mechanism and inserted into the control sleeve 3. Between the two sets of ring frames 61, the arc plates 63 are respectively set to form mounting grooves for installing the snap-fit ​​parts 4; The distance between the inner side of the arc-shaped variable diameter groove 7 and the center of the sleeve 5 near the end of the connecting plate 62 forming the arc-shaped variable diameter groove 7 is greater than the distance between the inner side of the arc-shaped variable diameter groove 7 and the center of the sleeve 5 away from the end of the connecting plate 62 forming the arc-shaped variable diameter groove 7; the same applies to the outer side of the arc-shaped variable diameter groove 7; the inner and outer sides of the arc-shaped variable diameter groove 7 have the same structure and are equally spaced. Furthermore, the annular frame 61 includes multiple sets of arc-shaped frames connected in sequence to form an internal circular through hole; the outer side of the arc-shaped frame is provided with a variable diameter arc surface, and the connecting plate 62 is provided on the outer side of the connection between two adjacent sets of arc-shaped frames; the inner side of the arc plate 63 has the same structure as the variable diameter arc surface; the variable diameter arc surface of the arc-shaped frame serves as the inner side of the arc-shaped variable diameter groove, and the inner side of the arc plate 63 serves as the outer side of the variable diameter arc groove; The distance between the inner side of the arc-shaped variable diameter groove 7 and the center of the sleeve 5 near the end of the connecting plate 62 forming the arc-shaped variable diameter groove 7 is A, and the distance between the inner side of the arc-shaped variable diameter groove 7 and the center of the sleeve 5 away from the end of the connecting plate 62 forming the arc-shaped variable diameter groove 7 is B, i.e., B < A; the distance between the outer side of the arc-shaped variable diameter groove 7 and the center of the sleeve 5 away from the end of the connecting plate 62 forming the arc-shaped variable diameter groove 7 is C, and the distance between the outer side of the arc-shaped variable diameter groove 7 and the center of the sleeve 5 near the end of the connecting plate 62 forming the arc-shaped variable diameter groove 7 is D, i.e., C < D; the inner and outer sides of the arc-shaped variable diameter groove 7 have the same structure and are equally spaced.

[0023] Specifically, the linkage block 10 will always be located in the linkage groove 8 and the bottom of the linkage groove 8 will be in clearance fit with the top surface of the linkage block 10; when the top block 12 does not abut against the snap-fit ​​member 4, the elastic snap-fit ​​member will apply an elastic force to the variable diameter frame to make it move closer to the locking mechanism. When the insertion tube 2 is connected and fixed to the sleeve 5, the top block 12 and the snap fastener 4 abut against the side away from the elastic abutment. The snap fastener 4 will pass through the sleeve 5 and extend into the annular snap fastener groove 13. Under the action of the elastic abutment, the top block 12 and the arc-shaped variable diameter groove 7, the snap fastener 4 cannot move radially along the sleeve 5. At this time, one end of the elastic connector is inserted into the locking groove 24, so that the control sleeve 3 is fixedly connected to the sleeve 5 and is limited and fixed by the locking mechanism.

[0024] In some possible implementations, the control sleeve 3 includes a body fitted over the outside of the sleeve 5, and an annular plate disposed on the side of the body near the locking mechanism and fitted over the outside of the sleeve 5; the elastic connector is mounted on the annular plate. The elastic connector includes a locking rod 25 arranged radially along the sleeve 5 and one end passing through the annular plate and extending into the locking groove 24, and a connecting spring 26 installed on the outside of the annular plate and connected to the other end of the locking rod 25. The connecting spring 26 is fitted on the outside of the locking rod 25. One end of the connecting spring 26 is installed on the outside of the annular plate and the other end is connected to the end of the locking rod 25 away from the sleeve 5. The elastic connectors are in multiple sets and are arranged along the circumference of the sleeve 5. The number of locking grooves 24 is greater than or equal to the number of elastic connectors. When the control sleeve 3 is limited and fixed, one end of the locking rod 25 will be located in the locking groove 24, and the other end of the locking rod 25 will abut against the locking mechanism, so that the locking rod 25 cannot move along the radial direction of the sleeve 5. At this time, the connecting spring 26 is in a compressed state. When the sleeve 5 separates from the insertion tube 2, the locking mechanism no longer limits the locking rod 25, and the connecting spring 26 returns from the compressed state to the initial state, causing the locking rod 25 to stretch and move along its axial direction, disengaging from the locking groove 24, thereby controlling the control sleeve 3 to rotate around the axial direction of the sleeve 5.

[0025] In some possible implementations, the snap-fit ​​component 4 includes a cross-shaped fitting bracket 9 installed in the arc-shaped variable diameter groove 7, and a snap-fit ​​rod 91 connected to the fitting bracket 9 near the sleeve 5; the fitting bracket 9 is slidably installed in the arc-shaped variable diameter groove 7 and contacts the inner and outer sides of the arc-shaped variable diameter groove 7. The locking rod 91 includes an upper rod disposed between the control sleeve 3 and the annular frame near the control sleeve 3 and connected to the mating frame 9, a middle rod located between the two sets of annular frames and connected to the mating frame 9, and a lower rod located at the bottom of the annular frame away from the control sleeve 3 and connected to the mating frame 9; the upper rod abuts against the top block 12; the mating frame 9 will be located in the arc-shaped variable diameter groove 7. When the control sleeve 3 rotates and drives the variable diameter frame 6 to rotate towards the opening side of the arc-shaped variable diameter groove 7, since B < A, C < D, and the inner and outer sides of the arc-shaped variable diameter groove 7 are spaced apart, the inner side of the arc-shaped variable diameter groove 7 will squeeze the mating frame 9 during the rotation, thereby causing the mating frame 9 to move away from the sleeve 5, and thus driving the locking rod 91 to disengage from the annular locking groove 13; conversely, the corresponding locking piece 4 will move towards the sleeve 5 and the locking piece 4 will be fixed.

[0026] In some possible implementations, the sleeve 5 is provided with a slotted groove 11 through which the snap-fit ​​rod 91 passes. The long axis of the slotted groove 11 is arranged along the axial direction of the sleeve 5. There are three sets of annular snap-fit ​​grooves 13, which are arranged corresponding to the snap-fit ​​rod 91. The slotted groove 11 is used to guide the movement direction of the snap-fit ​​rod 91. When the mating frame 9 moves to the bottom of the arc-shaped variable diameter groove 7, the snap-fit ​​rod 91 exits the annular snap-fit ​​groove 13 and the end of the snap-fit ​​rod 91 away from the mating frame 9 will be inside the slotted groove 11. Specifically, such as Figure 4 As shown, there are two sets of middle rods, and one set each for the upper and lower rods. At this time, there are four sets of waist-shaped slots 11, which are set in correspondence with the middle rod, upper rod, and lower rod. Furthermore, the snap-fit ​​component 4 is in multiple sets, and the arc-shaped variable diameter groove 7 is set one-to-one with the snap-fit ​​component 4, and the opening direction is consistent.

[0027] In some possible implementations, the elastic abutment includes an annular boss disposed on the outside of the sleeve 5 and a push spring 27 mounted on the annular boss and axially arranged radially along the sleeve 5; the push spring 27 is disposed between the reducing bracket 6 and the annular boss and is in a compressed state when the insertion tube 2 is locked to the sleeve 5, and the annular boss and the sleeve 5 are integrally formed.

[0028] In some possible embodiments, the locking mechanism includes a shift plate 15 fitted around the outside of the sleeve 5 and sealingly fitted with the sleeve 5; a push plate 23 inserted into the shift plate 15 and fitted around the outside of the sleeve 5; a shift rod 18 disposed on the push plate 23 near the shift plate 15 and inserted into the shift plate 15; and a shift spring 22 mounted on the push plate 23 and fitted around the outside of the shift rod 18; a shift hole 16 is provided on the shift plate 15 to insert into the shift rod 18; the push plate 23 is disposed between the shift plate 15 and the locking mechanism; an annular groove is formed between the end of the push plate 23 near the locking mechanism and the sleeve 5, and the end of the locking mechanism near the push plate 23 is inserted into the annular groove; Specifically, after assembly, the end of the moving rod away from the push plate 23 will abut against the moving plate; restricting the movement of the push sleeve 17 along the axial direction of the sleeve 5, the annular plate of the locking mechanism will be located in the annular groove; the locking rod 25 will be inserted into the locking groove 24; Conversely, during disassembly, the shift plate 15 is rotated so that the shift rod 18 is inserted into the shift hole 16, and the push sleeve 17 is moved closer to the shift plate 15 so that the push sleeve 17 no longer restricts the locking rod 25. The locking rod 25 will separate from the locking groove 24, and the control sleeve 3 can be rotated. Furthermore, a push sleeve 17 is provided on the side of the push plate 23 away from the shift plate 15, and an annular groove is located between the push sleeve 17 and the sleeve 5. The annular plate will be located in the annular groove after assembly.

[0029] In some possible embodiments, the insertion tube 2 includes a main tube 201 and a secondary tube 202 coaxially arranged with the main tube 201 and having a pressure sensor 1 installed at one end away from the main tube 201; the sleeve 5 includes a first tube 501 fitted around the outside of the main tube 201 and a second tube 502 coaxially connected to the first tube 501; the secondary tube 202 passes through the first tube 501 and extends into the second tube 502 and is sealed together, the outer diameter of the first tube 501 is larger than the outer diameter of the second tube 502 and they cooperate to form a support surface, and a sealing sleeve 21 is installed on the support surface; the inner diameter of the first tube 501 is larger than the inner diameter of the second tube 502 and forms an abutment surface that cooperates with the support surface; a sealing ring 19 is fitted around the outside of the secondary tube 202, and a sealing groove 20 that cooperates with the sealing ring 19 is provided on the inside of the second tube 502.

[0030] Specifically, the sealing rings 19 are in multiple sets and are equally spaced along the axial direction of the secondary pipe 202; the sealing grooves 20 are provided in a one-to-one correspondence with the sealing rings 19; Mounting bracket 14 includes a support plate for pressure sensor 1 and connecting rods for connecting the support plate to the inside of tube 2 502. There are at least two sets of connecting rods, thereby fixing pressure sensor 1 and ensuring communication between insertion tube 2 and sleeve 5.

[0031] Example 1: It should be noted that: the forward rotation described in this embodiment refers to the rotation around the axis of the sleeve 5 from the bottom of the arc-shaped variable diameter groove to the opening side; the reverse is the reverse rotation. A quick connector for an air conditioning system sensor includes a connector 2 for mounting a pressure sensor 1 at one end, a control sleeve 3, a snap-fit ​​component 4, a sleeve 5, a reducer 6, an arc-shaped reducer groove 7, a linkage groove 8, a linkage block 10, an oblong groove 11, a top block 12, an annular snap-fit ​​groove 13, and a mounting bracket 14. The snap-fit ​​component 4 includes a mating bracket 9 and a snap-fit ​​rod 91. A locking mechanism is installed on the outside of the sleeve 5. The connector 2 is detachably inserted into the sleeve 5. The control sleeve 3 is rotatably mounted on the outside of the sleeve 5. The snap-fit ​​rod 91 is fixedly connected to one side of the mating bracket 9, with one end of the snap-fit ​​rod 91 passing through the oblong groove 11 and inserting into the annular snap-fit ​​groove 13. The reducer 6 is movably mounted. The arc-shaped variable diameter groove 7 is located on the outside of the sleeve 5, the arc-shaped variable diameter groove 7 is located on the inside of the variable diameter frame 6, the linkage groove 8 is located on the side of the control sleeve 3 away from the locking mechanism, the mating frame 9 is slidably disposed in the arc-shaped variable diameter groove 7, the linkage block 10 is fixedly connected to the side of the variable diameter frame 6 near the locking mechanism and is inserted into the linkage groove 8, and the linkage block 10 is slidably disposed in the linkage groove 8; the waist-shaped hole groove 11 is located on the side wall of the sleeve 5, the annular snap-fit ​​groove 13 is located on the outside of the insertion tube 2, the top block 12 is fixedly disposed on the side of the control sleeve 3 away from the locking mechanism and abuts against the mating frame 9, and the mounting bracket 14 is fixedly installed on the inside of the insertion tube 2 and is used for the installation of the pressure sensor 1; The locking mechanism includes a shift plate 15, a shift hole 16, a push sleeve 17, a shift rod 18, and a shift spring 22. The shift plate 15 is rotatably mounted on the outside of the sleeve 5 and rotates about the axial direction of the sleeve 5. The shift hole 16 is opened on the shift plate 15 and the number of shift rods 18 is the same. The push sleeve 17 is slidably disposed on the outside of the sleeve 5. The shift rod 18 is fixedly mounted on the side of the push sleeve 17 near the locking mechanism. The length direction of the shift rod 18 is parallel to the axial direction of the sleeve 5. One end of the shift spring 22 is connected to the push sleeve 17 and the other end is in contact with the shift plate 15.

[0032] Multiple sets of sealing grooves 20 are formed on the inner wall of the sleeve 5, and multiple sets of sealing rings 19 are installed on the outer side of the insertion tube 2, and the sealing rings 19 are all inserted into the corresponding sealing grooves 20.

[0033] A sealing sleeve 21 is detachably provided at one end of the insertion tube 2 for installing the pressure sensor 1. It should be noted that when it is necessary to remove pressure sensor 1: First, rotate the shift plate 15 in the positive direction around the axis of the sleeve 5, so that the shift plate 15 drives the shift hole 16 to rotate to a position concentric with the shift rod 18, pushing the push plate 23 to move closer to the shift hole 16, so that the push sleeve 17 drives the shift rod 18 to slide into the shift hole 16. The push sleeve 17 and the shift plate 15 cooperate to compress the shift spring 22. The push sleeve 17 no longer limits the locking rod 25, and the control sleeve 3 is no longer limited and can rotate around the axis of the sleeve 5. At this time, the shift spring 22 is in a compressed state. Then, the control sleeve 3 is rotated forward, which drives multiple sets of locking rods 25 to move. The inner wall of the locking groove 24 presses against the end of the locking rod 25, causing one end of the locking rod 25 to slide out of the locking groove 24, and the other end of the locking rod 25 drives the connecting spring 26 to stretch. At the same time, the control sleeve 3 drives the linkage groove 8 and the top block 12 to rotate. At this time, the variable diameter frame 6 is driven to rotate forward through the linkage block 10 located in the linkage groove 8. The top block 12 is an arc-shaped protrusion, with its arc surface positioned away from the locking mechanism. Specifically, the number of top blocks 12 is the same as the number of locking rods, ensuring that each set of locking components can be fixed. When the top block 12 rotates, it gradually separates from the upper rod in the locking rod 91, thus no longer limiting the locking component 4. This allows the variable diameter frame 6 and the locking component 4 to slide closer to the locking mechanism under the push of the compressed push spring 27. The locking component 4 drives the insertion tube 2 to move outward from the sleeve 5 through the annular locking groove 13, and the sealing ring 19 no longer engages in the sealing groove 20, and the insertion tube 2 no longer presses the sealing sleeve 21. The movement of the variable diameter frame 6 will cause the linkage block 10 to slide along the linkage groove 8. When the control sleeve 3 rotates in the forward direction, the variable diameter bracket 6 will drive the arc-shaped variable diameter groove 7 to rotate in the forward direction, so that the mating bracket 9 slides from the opening side of the arc-shaped variable diameter groove 7 to the bottom. The inner side of the arc-shaped variable diameter groove 7 will drive one end of the snap-fit ​​rod 91 to gradually slide out from the annular snap-fit ​​groove 13. When the end of the snap-fit ​​rod 91 is located in the waist-shaped hole groove 11, the insertion pipe 2 can be removed from the sleeve 5. At the same time, the mounting bracket 14 on one side of the insertion pipe 2 will drive the pressure sensor 1 to be removed from the sleeve 5. Then the pressure sensor 1 can be removed from the mounting bracket 14.

[0034] Furthermore, the inner edge of the lock groove 24 and the end of the lock rod 25 are both designed with rounded corners.

[0035] When it is necessary to install pressure sensor 1: First, install the pressure sensor 1 on one side of the mounting bracket 14, and then insert the connector 2 into the sleeve 5; When one end of the insertion tube 2 abuts against the sealing sleeve 21, the push sleeve 17 moves away from the control sleeve 3 and does not limit the control sleeve 3. The control sleeve 3 rotates in the opposite direction, and the control sleeve 3 drives the locking rod 25 and the connecting spring 26 to rotate in the opposite direction. The control sleeve 3 will drive the variable diameter frame 6 to rotate in the opposite direction through the cooperation of the linkage groove 8 and the linkage block 10. As the reducing bracket 6 rotates, it drives the arc-shaped reducing groove 7 to rotate in the opposite direction. The top block 12 on the control sleeve 3 gradually limits the locking rod 91. The locking piece 4 slides away from the locking mechanism along the long axis of the waist-shaped groove 11, and, in conjunction with the reverse-rotating arc-shaped reducing groove 7, the locking rod 91 passes through the waist-shaped groove 11 and extends into the annular locking groove 13, driving the insertion tube 2 to press against the sealing sleeve 21, ensuring the sealing performance of the connection. The multiple sets of sealing rings 19 on the outside of the insertion tube 2 simultaneously lock... The sleeve 5 is inserted into the sealing groove 20 on the inner side to form a multi-layer sealing structure, thereby further enhancing the sealing performance of the connection and preventing leakage at the connection. At the same time, the snap-fit ​​4 drives the reducing frame 6 away from the locking mechanism through the mating frame 9. The reducing frame 6 will drive the linkage block 10 set on one side to move along the linkage groove 8. The reducing frame 6 will gradually come into contact with the push spring 27 and squeeze the push spring 27, so that the push spring 27 is compressed. Under the clamping of the top block 12 and the push spring 27, the reducing frame 6 will no longer rotate. When the reducing frame 6 cannot rotate, the control sleeve 3 will also be unable to rotate. The snap-fit ​​rod 91 will pass through the waist-shaped slot 11 and be fully inserted into the annular snap-fit ​​slot 13. At the same time, the connecting spring 26 will drive the locking rod 25 to reset and be inserted into the original locking slot 24. Release the push plate 23, and the shift spring 22 pushes the push sleeve 17 and the push plate 23 to reset; The push sleeve 17 drives the shift rod 18 to reset. After the shift spring 22 is fully reset, the shift plate 15 is rotated in the opposite direction, so that the shift plate 15 drives the shift hole 16 to rotate to a position that does not correspond to the shift rod 18. The shift rod 18 supports the push sleeve 17 to prevent the push sleeve 17 from sliding. At this time, the inner wall of the push sleeve 17 limits the outer end of the locking rod 25, so that the locking rod 25 and the locking groove 24 cooperate to lock and position the control sleeve 3, thereby ensuring the stability of the connection structure and ensuring the stable use of the equipment.

[0036] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. A quick connector for a pressure sensor in an air conditioning system, characterized in that, It includes a connector for mounting a pressure sensor, a sleeve coaxially connected to the connector and fitted outside the connector, and a fixing assembly fitted outside the sleeve for fixing the sleeve and the connector; the pressure sensor is located inside the sleeve, and the connector is sealed to the sleeve. The fixing assembly includes a locking mechanism fitted on the outside of the sleeve and rotatably engaged with the sleeve, a tightening mechanism fitted on the outside of the sleeve, passing through the sleeve and inserted into the outside of the insertion tube, and an elastic abutment member elastically connected to the tightening mechanism and located on the outside of the sleeve; the tightening mechanism is located between the locking mechanism and the elastic abutment member.

2. The quick connector for a pressure sensor in an air conditioning system according to claim 1, characterized in that, The locking mechanism includes a control sleeve fitted on the outside of the sleeve and located between the locking mechanism and the sleeve at one end near the locking mechanism; a reducing bracket fitted on the outside of the sleeve and inserted into the control sleeve at the end away from the locking mechanism; a snap-fit ​​component slidably mounted on the reducing bracket and having one end pass through the sleeve and inserted into the outside of the insertion tube; and an elastic connecting component located on the side of the control sleeve near the locking mechanism for connecting the sleeve and the control sleeve; the end of the reducing bracket away from the locking mechanism is elastically engaged with the elastic abutment component.

3. A quick connector for a pressure sensor in an air conditioning system according to claim 2, characterized in that, A top block that abuts against the snap-fit ​​component and a linkage groove that inserts into the reducer are provided on the side of the control sleeve near the reducer frame; an annular snap-fit ​​groove for use with the snap-fit ​​component is provided on the outer side of the insertion tube; and a locking groove for insertion into the elastic connector is provided on the outer side of the sleeve.

4. A quick connector for a pressure sensor in an air conditioning system according to claim 3, characterized in that, The control sleeve includes a body fitted on the outside of the sleeve, and an annular plate disposed on the side of the body near the locking mechanism and fitted on the outside of the sleeve; the elastic connector is mounted on the annular plate. The elastic connector includes a locking rod arranged radially along the sleeve and extending into the locking groove through the annular plate at one end, and a connecting spring installed on the outside of the annular plate and connected to the other end of the locking rod, wherein the connecting spring is fitted on the outside of the locking rod.

5. A quick connector for a pressure sensor in an air conditioning system according to claim 3, characterized in that, The variable diameter frame includes two sets of ring frames with the same structure that are fitted on the outside of the sleeve, a connecting plate located outside the two sets of ring frames and used to connect the two sets of ring frames, an arc plate connected to the side of the connecting plate away from the ring frame and forming an arc-shaped variable diameter groove between it and the outside of the ring frame, and a linkage block set on the ring frame near the locking mechanism and inserted into the control sleeve. Between the two sets of ring frames, the arc plates are set one-to-one to form mounting grooves for installing snap-fit ​​parts; The distance between the inner side of the arc-shaped variable diameter groove and the center of the sleeve is greater than the distance between the inner side of the arc-shaped variable diameter groove and the center of the sleeve; the inner and outer sides of the arc-shaped variable diameter groove have the same structure and are equally spaced.

6. A quick connector for a pressure sensor in an air conditioning system according to claim 5, characterized in that, The snap-fit ​​component includes a cross-shaped fitting bracket installed in the arc-shaped reducing groove, and a snap-fit ​​rod connected to the fitting bracket near the sleeve side; The locking rod includes an upper rod disposed between the control sleeve and the annular frame near the control sleeve and connected to the mating frame, a middle rod located between the two sets of annular frames and connected to the mating frame, and a lower rod located at the bottom of the annular frame away from the control sleeve and connected to the mating frame; the upper rod abuts against the top block.

7. A quick connector for a pressure sensor in an air conditioning system according to claim 6, characterized in that, The sleeve is provided with a waist-shaped groove through which the clamping rod passes. The long axis of the waist-shaped groove is arranged along the axial direction of the sleeve. There are three sets of annular clamping grooves, which are arranged corresponding to the clamping rod.

8. A quick connector for a pressure sensor in an air conditioning system according to claim 2, characterized in that, The elastic abutment includes an annular boss disposed on the outside of the sleeve and a push spring mounted on the annular boss and axially arranged radially along the sleeve; the push spring is disposed between the reducing bracket and the annular boss and is in a compressed state when the insertion tube is locked to the sleeve.

9. A quick connector for a pressure sensor in an air conditioning system according to any one of claims 1-8, characterized in that, The locking mechanism includes a shift plate fitted on the outside of the sleeve and sealingly fitted with the sleeve, a push plate inserted into the shift plate and fitted on the outside of the sleeve, a shift rod disposed on the push plate near the shift plate and inserted into the shift plate, and a shift spring mounted on the push plate and fitted on the outside of the shift rod; a shift hole is provided on the shift plate to insert into the shift rod; the push plate is disposed between the shift plate and the locking mechanism; an annular groove is formed between the end of the push plate near the locking mechanism and the sleeve, and the end of the locking mechanism near the push plate is inserted into the annular groove.

10. A quick connector for a pressure sensor in an air conditioning system according to claim 9, characterized in that, The insertion tube includes a main tube and a secondary tube coaxially arranged with a pressure sensor installed at the end away from the main tube; the sleeve includes a first tube fitted on the outside of the main tube and a second tube coaxially connected to the main tube; the secondary tube passes through the first tube and extends into the second tube, the outer diameter of the first tube is larger than the outer diameter of the second tube and they cooperate to form a support surface, and a sealing sleeve is installed on the support surface; the inner diameter of the first tube is larger than the inner diameter of the second tube and forms an abutment surface that cooperates with the support surface; a sealing ring is fitted on the outside of the secondary tube, and a sealing groove is provided on the inside of the second tube to cooperate with the sealing ring.

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