Joint device

Abstract

Through optimal design of the structure of the connector device, the female connector comprises the core rod, the core rod is provided with the through hole, the connector device is provided with the circulation channel S, part of the inner wall of the connector body forms part of the wall face of the circulation channel S, and the peripheral wall of the core body head and the peripheral wall of the core rod head form at least part of the wall face of the circulation channel S. A path for a medium to circulate is formed by utilizing the optimal design of the structures of parts, and in the state that the male connector and the female connector are matched, in the actual application scene, the medium enters from the male connector side or the female connector side, so that communication among the circulation channel S, the through hole and the core rod cavity can be achieved; the flow resistance of the fluid can be relatively reduced, and the pressure loss of the fluid is relatively reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of refrigeration control, in particular to a joint device. BACKGROUND

[0002] A household air conditioner comprises an indoor unit and an outdoor unit, and the two units are connected through a connecting pipe. In order to realize quick disassembly and assembly at a market end, a quick joint is usually used for connection. The quick joint comprises a first joint and a second joint. The first joint and the second joint are connected through a nut. The first joint comprises a top rod and a bushing. The second joint comprises a valve core. The top rod pushes the valve core to separate the valve core from a sealing cone surface of the second joint. Meanwhile, a front end step of the second joint pushes the bushing to separate the bushing from the top rod. The first joint and the second joint are simultaneously opened and communicated with each other to form a medium channel. After the two joints are connected, a plurality of product parts are needed, and a plurality of flow passage throttling factors are needed, such as the bushing, a stopper and a base, and a plurality of measuring holes need to be formed. The fluid changes the flow direction after passing through each part, and the flow resistance is large, and the pressure loss is large. SUMMARY

[0003] The application aims to provide a joint device with a new structure, which can relatively reduce flow resistance and pressure loss.

[0004] The application provides a joint device, which comprises a male joint and a female joint. The male joint and the female joint are detachably connected. The male joint comprises a joint body and a core body in the joint body. The core body comprises a core body head. The female joint comprises a core rod and a bushing sleeved on an outer circumferential part of the core rod. The core rod comprises a core body head, a core rod cavity and a through hole. The through hole penetrates the inner and outer surfaces of the core rod. The joint device is provided with a flow passage S. Part of the inner wall of the joint body forms part of the wall surface of the flow passage S. The outer circumferential wall of the core body head and the outer circumferential wall of the core rod head form at least another part of the wall surface of the flow passage S.

[0005] When the male joint and the female joint are in a connected state, the core body head abuts against the core rod head, the end surface part of the joint body abuts against the bushing abutting part of the bushing, one side part of the bushing is in sealing cooperation with the core rod, and the other side part of the bushing is in sealing cooperation with the joint body. The flow passage S, the through hole and the core rod cavity are communicated.

[0006] The application optimizes the structure of the joint device, so that the female joint comprises a core rod, the core rod is provided with a through hole, the joint device is provided with a flow channel S, part of the inner wall of the joint body forms part of the wall surface of the flow channel S, the outer peripheral wall of the core body head and the outer peripheral wall of the core rod head form at least another part of the wall surface of the flow channel S, the path for the medium flow is formed by optimizing the structure of the parts themselves, and the connection between the flow channel S, the through hole and the core rod cavity can be realized when the medium enters from the male joint or the female joint in the actual application scene, so that the blockage is relatively reduced, the flow resistance of the fluid is relatively reduced, and the pressure loss of the fluid is relatively reduced.

[0007] The application also provides a joint device, which comprises a female joint, the female joint comprises a core rod, a sleeve, a bushing, a second elastic element and a connecting nut, the core rod comprises a connecting part, the connecting part is fixedly connected with the sleeve or is an integral structure, the bushing is sleeved on the outer peripheral part of the core rod, the bushing is sealingly connected with the core rod and can axially displace relative to the core rod, part of the bushing is located between the sleeve and the core rod, the second elastic element is sleeved on the outer peripheral part of the core rod and directly or indirectly abuts between the bushing and the connecting part, the connecting nut is sleeved on the outer peripheral part of the sleeve, the core rod is provided with a through hole penetrating through the inner and outer surfaces of the core rod, and the through hole is connected with the core rod cavity of the core rod.

[0008] The application optimizes the structure of the female joint of the joint device, comprises a core rod, a sleeve, a bushing, a second elastic element and a connecting nut, the core rod is provided with a through hole penetrating through the inner and outer surfaces of the core rod, and the through hole is connected with the core rod cavity of the core rod, the path for the medium flow is formed by optimizing the structure of the parts themselves, so that the blockage is relatively reduced, the flow resistance of the fluid is relatively reduced, and the pressure loss of the fluid is relatively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 A perspective view of the male and female joints of the joint device in a separated state is provided in the application.

[0010] Figure 2 A whole structure sectional view of the male joint of the joint device is provided in the application.

[0011] Figure 3 A whole structure sectional view of the female joint of the joint device is provided in the application.

[0012] Figure 4 A perspective structure view of the core body of the joint device is provided in the application.

[0013] Figure 5 A perspective structure view of the female joint of the joint device is provided in the application.

[0014] Figure 6A cross-sectional view of the male and female connectors of the joint device provided by the present application in a connected state

[0015] Reference signs

[0016] Male connector 10, joint nut 11, abutting portion 111, first clamping portion 112, joint body 12, joint body inner cavity 12a, sub-cavity 121a, base 121, end face portion 1211, extension portion 122, extension portion end face 122a, core 13, first sealing fitting portion 131, first abutting portion 132, support leg 133, gasket 14, first elastic member 15, sealing member 16, fourth sealing member 17, external threaded portion 18, ramp portion 19, second internal threaded portion 20

[0017] Female connector 20, core rod 21, core rod cavity 21a, second sealing fitting portion 211, second abutting portion 212, through hole 213, connecting portion 214, core rod step portion 215, third sealing fitting portion 216

[0018] Sleeve 22, first abutting portion 221, second abutting portion 222, third abutting portion 223

[0019] Bushing 23, bushing abutting portion 231, bushing abutting portion 232, bushing step portion 233; first mounting groove 11, second mounting groove 12, third mounting groove 13, first sealing member 1A, second sealing member 2A, third sealing member 3A, second elastic member 25, connecting nut 26, first internal threaded portion 261, nut abutting portion 262, second clamping portion 263, connector 200, inner cavity 201, flow-through passage S

DETAILED DESCRIPTION

[0020] In order for those skilled in the art to better understand the technical solutions provided by the present application, the technical solutions of the present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0022] Please refer to Figures 1-3 , the three-dimensional view of the male and female connectors of the joint device provided by the present application in a connected state is shown, Figure 1 , the three-dimensional view of the male and female connectors of the joint device provided by the present application in a connected state is shown, Figure 2 , the three-dimensional view of the male and female connectors of the joint device provided by the present application in a connected state is shown, Figure 3The overall structure of the female joint of the joint device provided in the present application is shown in the sectional view. The joint device comprises a male joint 10 and a female joint 20. The male joint 10 comprises a joint nut 11 and a joint body 12. Part of the joint nut 11 is located in the joint body 12 and is fixedly connected to the joint body 12 by welding or the like. The joint body 12 is provided with an external thread part 18 which is threadedly engaged with a connecting nut 26 of the female joint 20. The joint nut 11 comprises an abutting part 111, a second internal thread part 20 and a first clamping part 112. The second internal thread part 20 is used to be threadedly engaged with an external thread part of a stop valve. The first clamping part 112 comprises a hexagonal surface part structure which is used to be operated by an external wrench to achieve a thread tightening cooperation with the stop valve. The joint nut 11 is further provided with a fourth sealing member 17 which is used to be abutted with a connecting end of the stop valve to prevent leakage of refrigerant. The male joint further comprises a core body 13, a gasket 14, a first elastic member 15 and a sealing member 16. The core body 13, the gasket 14 and the sealing member 16 are located in an inner cavity 12a of the joint body 12. The first elastic member 15 is at least partially located in the inner cavity 12a. Referring to Figure 4 In combination Figure 2 The core body 13 comprises a core body head and support feet 133 which can be slidably engaged with the joint body 12. A sub-flow passage is formed between adjacent two support feet 133. One end of the first elastic member 15 can be directly abutted with the abutting part 111. The other end is abutted with the support feet 133 through the gasket 14. Specifically, one side of the gasket 14 is abutted with the support feet 133 and the other side is abutted with the first elastic member 15. The core body head comprises a first sealing cooperation part 131 and a first abutting part 132. The joint body 12 is provided with a mounting groove. The sealing member 16 is at least partially limited in the mounting groove. The sealing member 16 is sealingly cooperated with the first sealing cooperation part 131 and the sealing member 16 is sealingly cooperated with the joint body 12. Alternatively, the core body head can be provided with a mounting groove. Similarly, the sealing member 16 is at least partially limited in the mounting groove. In a separated state, the sealing member 16 can achieve a sealing cooperation between the core body and the joint body. The joint body comprises a base part 121 and an extension part 122 which protrudes from an end surface part 1211 of the base part 121. The joint body 12 is further provided with a slope part 19. A tapered surface part of the core body 13 is abutted with the slope part 19. The core body 13 can approach or move away from the slope part 19. Through the direct abutment of one end of the first elastic member 15 with the abutting part 111 and the above structural design, in a connected state of the male joint 10 and the female joint 20, refrigerant can directly flow out from the sub-flow passage through the inner space of the first elastic member 15 after flowing into the inner cavity of the joint nut 11 from the side of the stop valve. The use of stop members and other components can be greatly reduced. The refrigerant flow resistance is relatively reduced and the pressure loss is reduced. The inner cavity 12a comprises a sub-cavity 121a. In a separated state, the sub-cavity 121a is located on one side of the first abutting part 132.

[0023] The following will be described with reference to Figure 3 , Figure 5 in combinationFigure 2The structure of the female connector 20 is introduced, including a core rod 21, a sleeve 22, a bushing 23, a second elastic member 25 and a connecting nut 26. The core rod 21 includes a connecting part 214. The sleeve 22 is located at the outer peripheral part of the core rod 21 and is fixedly connected with the connecting part 214 or is an integral structure. The sleeve 22 can be fixedly connected with the outer side part of the connecting part 214 by welding or the like. The inner side part of the connecting part 214 can be connected with an external connecting member. For example, the external connecting member can be a connecting pipe or a threaded member. The inner side part can be welded with the connecting pipe or is threadedly connected with the threaded member. The bushing 23 is sleeved on the outer peripheral part of the core rod 21, and part of the bushing 23 is located between the sleeve 22 and the core rod 21. The second elastic member 25 directly or indirectly abuts between the core rod 21 and the bushing 23. The connecting nut 26 is sleeved on the outer peripheral part of the sleeve 22. The core rod 21 includes a core rod head, which includes a second sealing cooperation part 211 and a second abutting part 212. In the connected state of the male and female connectors, the second abutting part 212 abuts with the first abutting part 132. The core body 13 is provided with a core rod cavity 21a and a through hole 213. The through hole 213 penetrates the inner and outer surfaces of the core body 13. The through hole 213 and the core rod cavity 21a are connected in communication. When the external connecting member is connected with the connecting part of the female connector, the through hole 213, the core rod cavity 21a and the inner cavity of the external connecting member are connected in communication. For example, when the external connecting member is the connecting pipe 200, the through hole 213, the core rod cavity 21a and the inner cavity 201 are connected in communication. When the external connecting member is the threaded member, the through hole, the core rod cavity and the inner cavity of the threaded member are connected in communication. The passage for the flow of refrigerant is formed by the optimized design of the structure of the core rod itself, which can reduce the use of parts and accordingly reduce the flow resistance, the refrigerant pressure loss and the like. The core rod 21 is provided with a core rod step part 215 and a third sealing cooperation part 216. The second sealing cooperation part 211 and the third sealing cooperation part 216 are located at different sides of the through hole 213. In the embodiment, the inner peripheral part of the bushing 23 is provided with a first mounting groove 11 and a second mounting groove 12. The first mounting groove 11 and the second mounting groove 12 are formed by being recessed inward from the inner peripheral wall of the bushing 23. The female connector 20 includes a first sealing member 1A and a second sealing member 2A. The first sealing member 1A is at least partially limited in the first mounting groove 11 and abuts with the second sealing cooperation part 211 and the bushing at the same time. The second sealing member 2A is at least partially limited in the second mounting groove 12 and abuts with the third sealing cooperation part 216 and the bushing at the same time. It should be noted that the first mounting groove and the second mounting groove can also be formed on the core rod 21 and can be recessed inward from the outer peripheral wall of the core rod 21. In the embodiment, the outer peripheral wall of the bushing 23 is further provided with a third mounting groove 13. The female connector 20 includes a third sealing member 3A.The third sealing member 3A is at least partially limited in the point mounting groove 13, and the third sealing member 3A abuts against the joint body 12 and the bushing 23 when the male and female joint is in the connected state, so as to realize the sealing cooperation between the joint body 12 and the bushing 23. It should be noted that the third mounting groove 13 can also be arranged on the joint body 12, and the third mounting groove 13 can be recessed inward from the inner wall of the joint body 12, so as to also realize the sealing cooperation between the joint body 12 and the bushing 23.

[0024] In the separated state of the male and female joint, one end of the second elastic member 25 abuts against the core rod step portion 215, and the other end abuts against the bushing step portion 233. The bushing 23 further comprises a bushing abutting portion 231 and a bushing abutting portion 232. When the male and female joint is connected, the bushing abutting portion 231 can abut against the end face portion 1211 and axially move to the right to compress the second elastic member 25 under the threaded cooperation. The sleeve 22 comprises a first abutting portion 221, a second abutting portion 222 and a third abutting portion 223. The connecting nut 26 comprises a first internal thread portion 261, a nut abutting portion 262 and a second clamping portion 263. In the separated state, the nut abutting portion 262 abuts against the first abutting portion 221, and the bushing abutting portion 232 abuts against the second abutting portion 222. The first internal thread portion 261 can be threadedly connected with the external thread portion 18. The second clamping portion 263 comprises a hexagonal surface structure for being operated by an external wrench to facilitate the threaded cooperation and tightening between the male and female joint.

[0025] Reference will be made to the accompanying drawings Figure 6 In combination Figures 2-3, the structure of the male and female joint in the connected state and the refrigerant flow path are emphasized, in the connected state of the joint device, the first internal thread part 261 is threadedly connected with the external thread part 18, the extension part end surface 122a of the extension part 122 is hard sealed with the third abutting part 223 to cooperate with several soft sealing parts to prevent leakage of the medium, the end surface part 1211 abuts against the bushing abutting part 231, the bushing abutting part 232 is away from the second abutting part 222, the second elastic part 25 is further compressed, the nut abutting part 262 abuts against the first abutting part 221, the third sealing part 3A abuts between the joint body 12 and the bushing 23, the sealing part 16 abuts between the joint body and the third sealing part 216, the first sealing part 1A abuts between the third sealing part 216 and the bushing 23, the second sealing part 2A abuts between the third sealing part 216 and the bushing 23, it is to be noted that the first sealing part 131 of the application refers to the cooperation surface of the core body 13 for sealing cooperation with the sealing part 16, the second sealing part 211 and the third sealing part 216 refer to the cooperation surface for sealing cooperation with the first sealing part 1A and the second sealing part 2A respectively, in the connected state, the core body head abuts against the core rod head, specifically, the first abutting part 132 abuts against the second abutting part 212, the first elastic part 15 is further compressed, the joint device has a flow channel S, part of the inner wall of the joint body 12 forms part of the wall surface of the flow channel S, the outer wall of the core body head and the outer wall of the core rod head form at least another part of the wall surface of the flow channel S, when the medium enters from the joint nut 11 side, the medium directly enters the flow channel S through the inner cavity of the joint nut 11, the inner space of the first elastic part 15, the sub-flow channel of the core body 13, and the outer connecting part inner cavity, the process reduces the number of parts, can significantly reduce the flow resistance in the refrigerant flow process, reduces the pressure loss, and improves the product performance of the joint device.

[0026] The application provides a joint device, which comprises a male joint and a female joint, the male joint and the female joint are detachably connected, the male joint comprises a joint body and a core body in the joint body, the core body comprises a core body head, the female joint comprises a core rod and a bushing sleeved on the outer circumferential part of the core rod, the core rod comprises a core body head, the core rod is provided with a core rod cavity and a through hole, the through hole penetrates the inner and outer surfaces of the core rod, the joint device is provided with a flow channel S, part of the inner wall of the joint body forms part of the wall surface of the flow channel S, the outer wall of the core body head and the outer wall of the core rod head form at least another part of the wall surface of the flow channel S.

[0027] When the male connector and the female connector are in the connected state, the core head abuts against the core rod head, the end face of the connector body abuts against the bushing abutting portion, one side of the bushing is in sealing cooperation with the core rod, and the other side of the bushing is in sealing cooperation with the connector body, and the flow channel S, the through hole and the core rod cavity are in communication.

[0028] The application optimizes the structure of the connector device, the female connector comprises a core rod, the core rod is provided with a through hole, the connector device is provided with a flow channel S, part of the inner wall of the connector body forms part of the wall surface of the flow channel S, and the outer peripheral wall of the core head and the outer peripheral wall of the core rod head form at least another part of the wall surface of the flow channel S, the path for the medium flow is formed by optimizing the structure of the parts themselves, and the communication between the flow channel S, the through hole and the core rod cavity can be realized when the male connector and the female connector are in the connected state and in the actual application scene, the flow resistance of the fluid can be relatively reduced, and the pressure loss of the fluid can be relatively reduced.

[0029] The application also provides a connector device, which comprises a female connector, the female connector comprises a core rod, a sleeve, a bushing, a second elastic member and a connecting nut, the core rod comprises a connecting portion, the connecting portion is fixedly connected with the sleeve or is an integrated structure, the bushing is sleeved on the outer peripheral portion of the core rod, the bushing is in sealing cooperation with the core rod and can axially displace relative to the core rod, part of the bushing is located between the sleeve and the core rod, the second elastic member is sleeved on the outer peripheral portion of the core rod and directly or indirectly abuts between the bushing and the connecting portion, the connecting nut is sleeved on the outer peripheral portion of the sleeve, the core rod is provided with a through hole penetrating through the inner and outer surfaces of the core rod, and the through hole is in communication with the core rod cavity of the core rod.

[0030] The application optimizes the structure of the female connector of the connector device, the female connector comprises a core rod, a sleeve, a bushing, a second elastic member and a connecting nut, the core rod is provided with a through hole penetrating through the inner and outer surfaces of the core rod, and the through hole is in communication with the core rod cavity of the core rod, the path for the medium flow is formed by optimizing the structure of the parts themselves, and the flow resistance of the fluid can be relatively reduced, and the pressure loss of the fluid can be relatively reduced.

[0031] It should be noted that the up, down, left, right and other directional terms mentioned in the present text are based on the drawings of the specification as the reference, and are introduced for the convenience of description; and the ordinal terms in the component names, such as the first and the second, are also introduced for the convenience of description, and do not mean any limitation on the order of the components; in addition, since the functions of some parts between the components provided in the above embodiments are the same, the present specification adopts a unified naming method for these parts. The connector device provided by the related technical solutions has been described in detail above, the specific embodiments are applied in the present text, the description of the above embodiments is only used to help understand the method of the present application and its core idea, and does not limit the present application in any form.

Claims

1. A connector device, characterized in that, The device includes a male connector and a female connector, which are detachably connected. The male connector includes a connector body and a core body located within the connector body. The core body includes a core head. The female connector includes a core rod and a bushing sleeved on the outer periphery of the core rod. The core rod includes a core head and has a core rod cavity and a through hole that penetrates the inner and outer surfaces of the core rod. The connector device has a flow channel S. A portion of the inner wall of the connector body forms a part of the wall surface of the flow channel S. The outer peripheral wall of the core head and the outer peripheral wall of the core rod head form at least another portion of the wall surface of the flow channel S. When the male connector and the female connector are connected, the core head abuts against the core rod head, the end face of the connector body abuts against the top of the bushing, one side of the bushing is sealed to the core rod, and the other side of the bushing is sealed to the connector body. The flow channel S, the through hole, and the core rod cavity are connected.

2. The connector device according to claim 1, characterized in that, The core rod includes a connecting part, which is directly connected to an external connector. The flow channel S, the through hole, the core rod cavity, and the inner cavity of the external connector are connected.

3. The connector device according to claim 2, characterized in that, The external connector includes a connecting pipe, the connecting part is welded and fixed to the connecting pipe, the connecting pipe has an inner cavity, and the flow channel S, the through hole, the core rod cavity and the inner cavity are connected.

4. The connector device according to claim 2, characterized in that, The external connector includes a threaded component, the connecting part is threadedly engaged with the threaded component, and the flow channel S, the through hole, the core rod cavity, and the inner cavity of the threaded component are connected.

5. The connector device according to any one of claims 1-4, characterized in that, The male connector also includes a connector nut and a first elastic element. The connector nut is fixedly connected to the connector body. The connector nut includes abutting portion. One end of the first elastic element abuts against the abutting portion, and the other end abuts against the core body. The inner cavity of the connector nut, the internal space of the first elastic element, the flow channel S, the through hole, and the core rod cavity are connected.

6. The connector device according to claim 5, wherein the male connector further includes a gasket, the core includes a support foot, the support foot is slidably engaged with the inner wall of the connector body, one side of the gasket abuts against the support foot, the other side abuts against the first elastic member, one end of the first elastic member away from the gasket directly abuts against the abutting portion, a sub-flow channel is formed between two adjacent support feet, and the inner cavity of the connector nut, the internal space of the first elastic member, the sub-flow channel, the flow channel S, the through hole and the core rod cavity are connected.

7. The connector device according to any one of claims 1-4, characterized in that, The connector body includes a base and an extension protruding from the end face. The connector body has a ramp portion. The male connector includes a seal. The connector body or the core head has a mounting groove. The seal is at least partially located in the mounting groove. The core head has a first sealing mating portion. The seal abuts against the first sealing mating portion and the connector body. In the separated state, the core abuts against the ramp portion.

8. The connector device according to any one of claims 1-4, characterized in that, The female connector includes a sleeve, a bushing, a second elastic element, and a connecting nut. The sleeve is fixedly connected to the connecting part or is an integral structure. The connecting nut is sleeved on the outer periphery of the sleeve. The connector body has an external thread, and the connecting nut has an internal thread that engages with the external thread. Part of the bushing is located between the sleeve and the core rod. The bushing includes a bushing step portion, and the core rod includes a core rod step portion. The second elastic element is sleeved on the outer periphery of the core rod. One end of the second elastic element abuts against the core rod step portion, and the other end abuts against the bushing step portion.

9. The connector device according to claim 8, characterized in that, The sleeve includes a first abutting part, a second abutting part, and a third abutting part. The connecting nut has a nut abutting part. The bushing includes a bushing abutting top and a bushing abutting part. The inner peripheral wall of the bushing or the outer peripheral wall of the core rod has a first mounting groove and a second mounting groove. The female connector includes a first sealing element that is at least partially located in the first mounting groove and a second sealing element that is at least partially located in the second mounting groove. The outer peripheral wall of the bushing or the inner peripheral wall of the connector body has a third mounting groove. The female connector includes a third sealing element that is at least partially located in the third mounting groove.

10. The connector device according to claim 9, characterized in that, The core rod includes a second sealing mating part and a third sealing mating part, which are located on different sides of the through hole. When the joint device is in the separated state, the first sealing member abuts between the first sealing mating part and the bushing, the second sealing member abuts between the second sealing mating part and the bushing, the nut abutting part abuts against the first abutting part, and the bushing abutting part abuts against the second abutting part.

11. The connector device according to claim 9, characterized in that, The core head includes a first abutment, the core rod head includes a second abutment, and the connector body includes an extension end face. In the connected state, the connecting nut is threadedly connected to the connector body. The first abutment abuts against the second abutment, the end face of the connector body abuts against the bushing abutment, and the extension end face is in hard-seal fit with the third abutment. The first sealing member abuts against the bushing and the third sealing fit, the second sealing member abuts against the bushing and the third sealing fit, and the third sealing member abuts against the bushing and the connector body.

12. The connector device according to any one of claims 1-4, characterized in that, The connector nut is provided with a first clamping part, and the connecting nut is provided with a second clamping part. Both the first clamping part and the second clamping part are used to cooperate with an external wrench for operation.

13. A connector device, characterized in that, The device includes a female connector, which comprises a core rod, a sleeve, a bushing, a second elastic element, and a connecting nut. The core rod includes a connecting portion, which is fixedly connected to the sleeve or is an integral structure. The bushing is sleeved on the outer periphery of the core rod, and the bushing and the core rod are sealed together and can be axially displaced relative to the core rod. Part of the bushing is located between the sleeve and the core rod. The second elastic element is sleeved on the outer periphery of the core rod and directly or indirectly abuts against the bushing and the connecting portion. The connecting nut is sleeved on the outer periphery of the sleeve. The core rod has a through hole penetrating the inner and outer surfaces of the core rod, and the through hole communicates with the core rod cavity.

14. The connector device according to claim 13, characterized in that, One side of the connecting part is fixedly connected to the sleeve or is an integral structure, and the other side of the connecting part is directly connected to an external connector, which includes a pipe or a threaded part.

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