A connection joint

Abstract

This application provides a connector, relating to the field of pipe connection technology. The connector includes a pipe body, a claw assembly, and a support sleeve. A first connector and a second connector are respectively provided at both ends of the pipe body. The claw assembly includes multiple claws, with the first ends of the claws wrapped around the pipe body. The inner sides of the second ends of each claw collectively form a clearance hole. The pipe body slides relative to the support sleeve, allowing the claws to switch between an unlocked position and a locked position. In the locked position, the second ends of the claws are located between the support sleeve and the pipe body, confining the bulge within the receiving cavity. In the unlocked position, the second ends of the claws are located outside the support sleeve, allowing the bulge to disengage from the receiving cavity through the clearance hole. This application's embodiment controls the size of the clearance hole by using a support sleeve, thereby limiting or releasing the bulge of the male connector, achieving rapid connection or separation of the connector and the male connector.

Description

Technical Field

[0001] This application relates to a connection joint, belonging to the field of pipeline connection technology. Background Technology

[0002] Vehicle circulation systems (such as cooling circulation systems and air conditioning systems) require connecting related components through pipes. To facilitate connection with pipes, these components are usually equipped with male connectors. By inserting the pipe into the male connector, the pipe can be connected to the component. Then, by using clamps to press and fix the pipe to the male connector, the pipe can be prevented from detaching from the male connector.

[0003] However, when using clamps to secure pipes to male connectors, the pipe must first be inserted into the male connector, and then the clamp structure is used to secure the pipe to the male connector. When separating the pipe from the male connector, the clamp must first be removed to release the fixation on the pipe and the male connector, and then the pipe can be pulled out to separate the pipe from the male connector.

[0004] The process of connecting and disconnecting the entire pipeline and the male connector is very complicated. Summary of the Invention

[0005] This application provides a connecting joint that solves the problem of cumbersome steps in connecting or separating the second pipe from the first pipe in the prior art.

[0006] This application provides a connector for connecting a first pipe and a second pipe. The first pipe has an annular bulge. The connector includes a pipe body, a claw assembly, and a support sleeve. The pipe body has a first connector for inserting the first pipe and a second connector for connecting the second pipe at both ends. The claw assembly includes multiple claws, the first ends of which are wound around the outer peripheral wall of the pipe body. The inner sides of the second ends of each claw collectively form a clearance hole. A receiving cavity is formed between the second ends of the claws and the ends of the first connectors away from the pipe body. The receiving cavity and the clearance hole... The tube is connected; the support sleeve is slidably fitted onto the outside of the tube body along the axial direction of the tube body, and at least a portion of the pawl is located between the support sleeve and the tube body; the tube body is configured to slide relative to the support sleeve under the action of the bulge portion, so as to drive the pawl to switch between a locked position and an unlocked position. In the locked position, the second end of the pawl is located between the support sleeve and the tube body, and the second end of the pawl restricts the bulge portion within the receiving cavity; in the unlocked position, the second end of the pawl is located outside the support sleeve, so that the bulge portion disengages from the receiving cavity through the clearance hole.

[0007] Optionally, a first elastic element is connected between the support sleeve and the tube body. The first elastic element is configured to push the tube body to move toward a second end away from the chuck, so as to drive the chuck to switch to the locking position.

[0008] Optionally, the claw assembly further includes a second elastic element connected to a plurality of the claws, the second elastic element being configured to drive the claws to switch to the unlock position and keep the claws in contact with the support sleeve.

[0009] Optionally, the outer side of the claw is provided with a clearance groove, which is located between the first end and the second end of the claw. In the unlocked position, the support sleeve abuts against the groove surface of the clearance groove.

[0010] Optionally, a limiting member is fixed circumferentially to the tube body, and at least a portion of the limiting member protrudes from the circumferential surface of the tube body to form a limiting part. The limiting part is located on the sliding path of the support sleeve. The inner side of the support sleeve is provided with a first groove for avoiding the limiting part. The first groove extends along the relative sliding direction between the support sleeve and the tube body and passes through the end of the support sleeve away from the pawl. The support sleeve and / or the limiting member can rotate circumferentially around the tube body. In the locked position, the limiting part is located outside the end of the support sleeve away from the pawl.

[0011] Optionally, a first annular portion is provided on the inner wall between the two ends of the support sleeve. The support sleeve is slidably connected to the tube body through the first annular portion. The claw and the limiting member are respectively located on both sides of the first annular portion. The first end of the claw and the limiting member are located on the sliding path of the first annular portion.

[0012] Optionally, the first connector has a first channel, and the tube body has a connecting channel; the first connector includes a plug-in part and a sliding part connected together, the first channel passes through the plug-in part and the sliding part, the sliding part is slidably and sealingly connected to the connecting channel along the axial direction of the tube body, the plug-in part is located outside the tube body, and a portion of the plug-in part is projected onto the tube body along the axial direction of the tube body; a third elastic member is provided between the first connector and the tube body, the third elastic member being configured to drive the first connector to move toward the direction close to the clearance hole.

[0013] Optionally, an annular seal is provided at the end of the plug portion away from the sliding portion, and at least a portion of the annular seal protrudes from the end face of the plug portion, and the plug portion is sealed to the first pipe through the annular seal.

[0014] Optionally, the annular seal has a tapered portion at one end away from the insertion portion, and the outer diameter of the tapered portion gradually decreases along the direction in which the annular seal protrudes from the insertion portion;

[0015] The second end of the claw is provided with a first protrusion on its inner side. The first protrusion is disposed opposite to the insertion part. When the insertion part abuts against the first protrusion, part of the tapered part is inserted into the clearance hole.

[0016] Optionally, the second connector is a bamboo-joint tube, and the second connector is integrally formed with the tube body.

[0017] The beneficial effects of this application are as follows: the connecting joint provided by this application, after connecting the second connecting member to the second pipe, can realize the connection between the second pipe and the first pipe by inserting the first pipe and the first connecting member, and can realize the disconnection between the second pipe and the first pipe by separating the first pipe and the first connecting member.

[0018] During the process of inserting the first pipe into the connector, the operator can slide the support sleeve to the unlocked position so that the diameter of the clearance hole is larger than the outer diameter of the bulge. This allows the end of the first pipe and the bulge to pass through the clearance hole and enter the receiving cavity. Furthermore, since the sliding direction of the support sleeve from the unlocked position to the locked position is opposite to the direction in which the first pipe is inserted into the first connector, when the first pipe is inserted into the first connector, the operator holds the support sleeve, and the force of the first pipe on the pipe body causes the support sleeve to move from the locked position to the unlocked position. After the first pipe is inserted into the first connector, when the support sleeve moves to the locked position, because the diameter of the clearance hole is smaller than the outer diameter of the bulge, the bulge cannot pass through the clearance hole and is confined within the receiving cavity, preventing the first pipe from falling off the connector. The connection and fixation of the first pipe and the connector can be completed in one step, thereby achieving a quick connection between the connector and the first pipe and simplifying the connection steps between the second pipe and the first pipe.

[0019] During the process of separating the connector from the first pipe, the support sleeve can be slid to the unlocked position, allowing the first pipe to pass through the clearance hole and separate from the first connector. This enables rapid separation of the connector from the first pipe and simplifies the separation steps between the second pipe and the first pipe. Attached Figure Description

[0020] The above and other objects, features, and advantages of embodiments of this application will become more readily understood through the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this application will be described by way of example and non-limitation, wherein:

[0021] Figure 1 This is a partial structural diagram of the first pipe in the prior art;

[0022] Figure 2 This is a three-dimensional structural diagram of the connector provided in the embodiments of this application;

[0023] Figure 3 For this Figure 3 A cross-sectional view of the connecting joint, with the support sleeve in the locked position.

[0024] Figure 4 A cross-sectional structural diagram of the connecting joint when the support sleeve provided in the embodiment of this application is in the unlocked position;

[0025] Figure 5 for Figure 2 A three-dimensional structural diagram of the middle claw assembly;

[0026] Figure 6 for Figure 3 A three-dimensional structural diagram of the middle limiting component;

[0027] Figure 7 This is a three-dimensional structural schematic diagram of the connector provided in an embodiment of this application from another perspective.

[0028] Figure label:

[0029] 10-First pipe; 11-Bulging section;

[0030] 100 - Pipe body; 101 - Connecting channel; 110 - Receiving cavity; 120 - First annular groove; 130 - Second annular groove;

[0031] 200-First connector; 201-First channel; 210-Insertion part; 220-Sliding part; 230-Third elastic element; 240-Second boss; 250-Third annular groove; 260-Annular sealing ring;

[0032] 300 - Second connector; 301 - Second channel;

[0033] 400-Claw assembly; 401-Allowing hole; 410-Claw; 411-First protrusion; 412-Arc groove; 413-Allowing groove; 420-Second elastic element;

[0034] 500 - Support sleeve; 501 - First groove; 510 - First elastic element; 520 - Stop part; 530 - First annular part; 540 - First boss;

[0035] 600 - Limiting component; 610 - Limiting part;

[0036] 700 - Arrival Part;

[0037] 800 - Annular seal; 810 - Conical part. Detailed Implementation

[0038] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "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 mechanical connection, an electrical connection, or a connection that allows communication between components; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] like Figure 1 As shown, existing male connectors are typically connected to or formed on components. The male connector has a rigid first conduit 10 with an annular bulge 11 protruding from it. When the hose is inserted into the male connector, the bulge 11 enters the hose, and a clamp is fixed to the first conduit 10 between the connector and the bulge 11, thus preventing the clamp from detaching. Because the existing method of fixing the hose to the male connector requires first inserting the hose into the first conduit 10 and then using a clamp to prevent the hose from detaching, this method makes the connection and disconnection of the male connector and the conduit cumbersome. Furthermore, reused clamps may result in insecure connections between the conduit and the male connector. Therefore, if the male connector is disassembled during maintenance / repair, the clamp cannot be reused, leading to increased operating costs.

[0045] The connection connector provided in this application is intended to solve the above-mentioned technical problems of the prior art.

[0046] The connection connector provided in this application will be described in detail below with reference to specific embodiments.

[0047] like Figures 2 to 7As shown, the connector is used to connect the first pipe 10 and the second pipe. The first pipe 10 has an annular bulge 11. The connector includes a pipe body 100, a claw assembly 400, and a support sleeve 500. The pipe body 100 has a first connector 200 for insertion into the first pipe 10 and a second connector 300 for connection to the second pipe at both ends. The claw assembly 400 includes multiple claws 410. The first ends of the claws 410 are wrapped around the outer peripheral wall of the pipe body 100. The inner side of the second end of each claw 410 forms a clearance hole 401. The second end of the claw 410 and the end of the first connector 200 away from the pipe body 100 enclose a receiving cavity 110, which communicates with the clearance hole 401. The support sleeve 500 is slidably sleeved on the outside of the tube body 100 along the axial direction of the tube body 100, and at least part of the pawl 410 is limited between the support sleeve 500 and the tube body 100. The tube body 100 is configured to slide relative to the support sleeve 500 under the action of the bulge portion 11, so as to drive the pawl 410 to switch between a locked position and an unlocked position. In the locked position, the second end of the pawl 410 is located between the support sleeve 500 and the tube body 100, and the second end of the pawl 410 restricts the bulge portion 11 within the receiving cavity 110. In the unlocked position, the second end of the pawl 410 is located outside the support sleeve 500, so that the bulge portion 11 is disengaged from the receiving cavity 110 through the clearance hole 401.

[0048] It is understood that the first pipe 10 can be a separate component, such as a three-way male connector or a two-way male connector, or it can be formed on components such as water tanks or coolant tanks for connecting pipes. The second pipe 20 can be any pipe, such as a rubber hose or a nylon hose. This disclosure does not specifically limit its application. The receiving cavity 110 is used to receive the bulge 11.

[0049] With the above scheme, when the first connector 200 is connected to the first pipe 10 and the second connector 300 is connected to the second pipe, the first pipe 10 and the second pipe can be connected through the first connector 200, the pipe body 100, and the second connector 300. For example, the first connector 200 has a first channel 201 inside, the second connector 300 has a second channel 301 inside, and the pipe body 100 has a connecting channel 101 inside. Both the first channel 201 and the second channel 301 are connected to the connecting channel 101.

[0050] When using the connector, the second connector 300 can be pre-connected to the second pipe. When it is necessary to connect the second pipe to the first pipe 10, the first pipe 10 can be inserted into the first connector 200. When it is necessary to disconnect the second pipe from the first pipe 10, it is only necessary to pull the first pipe 10 out of the first connector 200.

[0051] Before connecting the first pipe 10 to the first connector 200, the operator can switch the claw 410 to the unlocked position so that the second end of the claw 410 is outside the support sleeve 500 and the diameter of the clearance hole 401 is larger than the outer diameter of the bulge 11, so that the bulge 11 of the first pipe 10 can pass through the clearance hole 401 and enter the receiving cavity 110.

[0052] During the connection of the first pipe 10 to the first connector 200, the operator can hold the support sleeve 500 with one hand and the first pipe 10 with the other, and insert the first pipe 10 into the first connector 200. During this process, the bulge 11 of the first pipe 10 will enter the receiving cavity 110, and at the same time, the bulge 11 will push the first connector 200 to slide along the axis of the pipe body, so that the pipe body 100 slides relative to the support sleeve 500, thereby switching the pawl 410 from the unlocked position to the locked position. When 410 reaches the locking position, the second end of the pawl 410 is located between the support sleeve 500 and the tube body 100. The diameter of the clearance hole 401 becomes smaller than the outer diameter of the bulge 11. The bulge 11 cannot pass through the clearance hole 401 and is restricted in the receiving cavity 110, thereby preventing the first pipe 10 from falling off the connecting joint. The connection and fixation of the first pipe 10 and the connecting joint can be completed in one step, thus realizing the quick connection between the connecting joint and the first pipe 10 and simplifying the connection steps between the second pipe and the first pipe 10.

[0053] During the process of separating the connector from the first pipe 10, the operator can hold the support sleeve 500 with one hand and the first pipe 10 with the other, and slide the support sleeve 500 so that the second end of the claw assembly 400 is outside the support sleeve 500. This allows the claw 410 to switch to the unlocked position, and the diameter of the clearance hole 401 becomes larger than the outer diameter of the bulge 11, so that the bulge 11 can be separated from the receiving cavity 110 through the clearance hole 401 and separated from the first connector 200. This achieves rapid separation of the connector from the first pipe 10 and simplifies the separation steps of the second pipe from the first pipe 10.

[0054] Since no clamps are needed during the connection and disconnection process between the connector and the first pipe 10, and there is no need to replace the clamps, and all components in the connector can be reused, maintenance / repair costs can be reduced.

[0055] It should be noted that in this embodiment, the first end of the chuck 410 can rotate relative to the tube body 100, and the swing plane of the chuck 410 is parallel to the axis of the tube body 100, thereby allowing the diameter of the clearance hole 401 constructed by the second end of the chuck 410 to change. Of course, in other embodiments, the chuck 410 can also slide tilted relative to the tube body 100 to achieve a change in the diameter of the clearance hole 401. In addition, in the locked position, the second end of the chuck 410 can be opposite and spaced from the end of the first connector 200 away from the tube body 100, so as to construct the aforementioned receiving cavity 110 between the second end of the chuck 410 and the first connector 200.

[0056] Furthermore, the specific structure of the second connector 300 can be customized according to the material of the second pipe to be connected. For example, if the second pipe is a rubber hose, the second connector 300 can be configured with the same structure as the first pipe 10, i.e., a bulge 11 is provided on the second pipe. If the second pipe is a nylon pipe, the second connector 300 can be configured with a bamboo-joint structure. If the second pipe is a metal pipe, the second connector 300 can be configured with a threaded pipe structure. This disclosure does not impose specific limitations on this aspect.

[0057] Since the first pipe 10 with the bulge 11 cannot be directly connected to the nylon tube, in this embodiment, the second connector 300 can be a bamboo-joint tube structure, allowing the second connector 300 to be sealed to the nylon tube, thereby achieving communication between the first pipe 10 and the nylon tube through the connector. Furthermore, the second connector 300 and the pipe body 100 are integrally formed to improve the connection stability between them. Of course, in other embodiments, the second connector 300 and the pipe body 100 can also employ a detachable connection structure, such as a threaded connection.

[0058] In some alternative embodiments, at least one of the tube body 100, the first connector 200, the second connector 300, the claw 410, and the support sleeve 500 may be made of plastic, including but not limited to polytetrafluoroethylene (PTFE), polyetheretherketone (PEEK), polyphenylene sulfide (PPS), or nylon (PA). Compared to the aforementioned components made of metal, components made of plastic have the corrosion resistance required for use. Furthermore, the weight of the entire connector can be reduced, and the production cost of the connector can also be lowered.

[0059] In some alternative implementations, such as Figure 3As shown, the inner side of the claw 410 is provided with a first protrusion 411, and the above-mentioned clearance hole 401 is constructed through the first protrusion 411. At the same time, when in the locked position, the first protrusion 411 can be located on the moving path of the first connector 200 to better limit the bulge 11 of the first pipe 10.

[0060] like Figure 3 and Figure 4 As shown, in some alternative embodiments, a first elastic element 510 is connected between the support sleeve 500 and the tube body 100. The first elastic element 510 is configured to push the tube body 100 toward a second end away from the pawl 410, so as to drive the pawl 410 to switch to the locking position.

[0061] Under the elastic force of the first elastic element 510, if the pawl 410 needs to switch to the unlock position, the tube body 100 needs to overcome the elastic force of the first elastic element 510. Therefore, after the connecting joint is connected and fixed to the first pipe 10, under the elastic force of the first elastic element 510, the support sleeve 500 can be prevented from sliding to the unlock position due to accident, thereby preventing the connecting joint from accidentally separating from the first pipe 10. At the same time, the first elastic element 510 can also provide assistance when the pawl 410 switches to the locking position.

[0062] Optionally, in this embodiment, the first elastic element 510 is a spring, so that the first elastic element 510 can be sleeved on the outside of the tube body 100, making the elastic force of the first elastic element 510 on the support sleeve 500 more uniform, and at the same time reducing the space occupied by the first elastic element 510 during deformation. Of course, in other embodiments, the first elastic element 510 can also be a spring sheet. By setting multiple spring sheets connected to different positions of the support sleeve 500, the elastic force of the first elastic element 510 on the support sleeve 500 can be made more uniform.

[0063] In order to synchronize the switching of the chuck 410 between the locked and unlocked positions with the sliding of the tube body 100, in some optional embodiments, such as Figure 3 and Figure 5 As shown, the claw assembly 400 also includes a second elastic element 420, which connects to a plurality of claws 410. The second elastic element 420 is configured to drive the claws 410 to switch to the unlock position and to keep the claws 410 in contact with the support sleeve 500.

[0064] It is understood that when the second elastic element 420 drives the second end of the claw 410 to swing toward the support sleeve 500, the claw 410 and the support sleeve 500 can remain in contact. Furthermore, when the second end of the claw 410 swings toward the support sleeve 500, the diameter of the clearance hole 401 will increase; conversely, when the second end of the claw 410 swings toward the tube body 100, the diameter of the clearance hole 401 will decrease.

[0065] When the tube body 100 slides relative to the support sleeve 500, the relative position of the pawl 410 and the support sleeve 500 changes, and the contact area between the outer sides of the support sleeve 500 and the pawl 410 changes synchronously. This allows the pawl 410 to swing synchronously to different swing angles when the tube body 100 and the support sleeve 500 are in different relative positions.

[0066] In addition, it can be understood that when the support sleeve 500 and the tube body 100 are connected by a first elastic element 510 and the multiple claws 410 are connected by a second elastic element 420, the elastic force of the first elastic element 510 can be greater than the elastic force of the second elastic element 420, so that the tube body 100 can still drive the claws 410 to switch to the locking position under the action of the elastic force of the first elastic element 510.

[0067] Optionally, in this embodiment, the second elastic element 420 is an elastic open ring, whose diameter can change under the action of elastic force. An arc-shaped groove 412 is provided on the outer wall of the first end of each claw 410, and the second elastic element 420 is sleeved within the arc-shaped groove 412. Under the elastic force of the second elastic element 420, the claw 410 can swing relative to the pipe body 100. Using an elastic open ring as the second elastic element 420 ensures that the elastic force on each claw 410 is uniform, and that the swing angle of each claw 410 is consistent. This ensures that the axis of the clearance hole 401 does not change when the diameter of the clearance hole 401 changes, facilitating the insertion or separation of the first pipe 10.

[0068] like Figure 3 and Figure 4 As shown, in some optional embodiments, a clearance groove 413 is provided on the outer side of the claw 410. The clearance groove 413 is located between the first end and the second end of the claw 410. In the unlocked position, the support sleeve 500 abuts against the groove surface of the clearance groove 413.

[0069] It is understood that the groove surface of the clearance groove 413 can be either the groove wall surface or the groove bottom surface. By setting the clearance groove 413, the chuck 410 can have a larger swing angle.

[0070] like Figure 3 and Figure 4As shown, in order to make the structure of the connector more compact, in some optional embodiments, a first annular groove 120 is provided on the outer wall of the tube body 100, and the first end of each claw 410 is at least partially located in the first annular groove 120, so as to reduce the volume of the first end of the claw 410 protruding from the surface of the tube body 100, making the structure of the connector more compact. At the same time, the position of the arc groove 412 corresponds to the first annular groove 120, so that the first end of the claw 410 can swing within the first annular groove 120.

[0071] like Figure 3 and Figure 6 As shown, to further prevent the first pipe 10 from accidentally falling off after it is connected and fixed to the connecting joint, in some optional embodiments, a limiting member 600 is fixed circumferentially to the pipe body 100. At least a portion of the limiting member 600 protrudes from the circumferential surface of the pipe body 100 to form a limiting part 610. The limiting part 610 is located on the sliding path of the support sleeve 500. The inner side of the support sleeve 500 is provided with a first groove 501 for avoiding the limiting part 610. The first groove 501 extends along the relative sliding direction between the support sleeve 500 and the pipe body 100 and penetrates the end of the support sleeve 500 away from the claw 410. The support sleeve 500 and / or the limiting member 600 can rotate circumferentially around the pipe body 100. In the locked position, the limiting part 610 is located outside the end of the support sleeve 500 away from the claw 410.

[0072] By configuring the support sleeve 500 and / or the limiting member 600 to rotate circumferentially around the tube body 100, the relative position of the limiting member 600 and the first groove 501 can be adjusted. When the first groove 501 is directly opposite the limiting part 610 (i.e., along the sliding direction of the first groove, the projection of the limiting part 610 is located within the first groove 501), the support sleeve 500 can avoid the limiting part 610 through the first groove 501, thereby ensuring that the sliding of the support sleeve 500 is not affected by the limiting part 610, and the support sleeve 500 can slide from the locked position to the unlocked position, releasing the limiting part 610 from restricting the tube body 100. When the first groove 501 is misaligned with the limiting part 610 (i.e., at least part of the projection of the limiting part 610 is located outside the first groove 501 along the sliding direction of the support sleeve 500), the first groove 501 cannot avoid the limiting part 610, and the limiting part 610 will abut against the support sleeve 500, preventing the pipe body 100 from driving the claw 410 to switch towards the unlocked position, thus limiting the pipe body 100. This prevents the first pipe 10 from accidentally falling off from the connecting joint due to the enlargement of the avoidance hole 401 caused by the sliding of the support sleeve 500.

[0073] In this embodiment, the support sleeve 500 is configured to rotate circumferentially around the axis of the tube body 100, while the limiting member 600 is fixed to the tube body 100. This allows the support sleeve 500 and the tube body 100 to slide relative to each other, enabling the locking and unlocking of the chuck, and also to limit or contact the tube body 100 through relative rotation, thus achieving a dual-purpose function and facilitating operator control.

[0074] In some alternative embodiments, the limiting member 600 may also be made of plastic.

[0075] Regarding the specific structure of the limiting member 600, in this embodiment, as follows: Figure 6 As shown, the limiting member 600 can be an elastic open ring, and the aforementioned limiting portion 610 is formed on the limiting member 600 by bending. Simultaneously, a second annular groove 130 is provided on the tube body 100. The limiting member 600 can be fitted within the second annular groove 130 and abuts against the second annular groove 130 under the elastic force of the limiting member 600 to fix the limiting member 600. When an external force is applied to the limiting member 600 to increase its diameter, the limiting member 600 can be disengaged from the second annular groove 130, allowing the limiting member 600 to separate from the tube body 100. This facilitates the installation or removal of the first elastic member 510.

[0076] To limit the relative rotation angle between the tube body 100 and the support sleeve 500, such as Figure 7 As shown, in some alternative embodiments, the end of the support sleeve 500 away from the claw 410 is provided with at least a pair of stops 520. Figure 7 Only one of the pair of stop portions 520 is shown (the other stop portion 520 is obscured by the tube body 100 and is not shown). The pair of stop portions 520 are spaced apart, and the limiting portion 610 of the limiting member 600 is located between the pair of stop portions 520, and the limiting portion 610 is located on the movement path of the stop portion 520. During the relative rotation of the support sleeve 500 and the tube body 100, the stop portion 520 can abut against the limiting portion 610, thereby limiting the relative rotation angle between the tube body 100 and the support sleeve 500.

[0077] To reduce the time spent by the operator aligning the first groove 501 with the limiting portion 610, in some alternative embodiments, the surface of one of the stop portions 520 that abuts against the limiting portion 610 is parallel to the groove wall surface of the first groove 501. This ensures that when the stop portion 520 abuts against the limiting portion 610, the first groove 501 is precisely aligned with the limiting portion 610.

[0078] To limit the relative sliding range between the support sleeve 500 and the tube body 100 and prevent the support sleeve 500 from separating from the tube body 100 during use, in some optional embodiments, a first annular portion 530 is provided on the inner wall between the two ends of the support sleeve 500. The support sleeve 500 is slidably connected to the tube body 100 through the first annular portion 530. The claw 410 and the limiting member 600 are respectively located on both sides of the first annular portion 530, and the first end of the claw 410 and the limiting member 600 are located on the sliding path of the first annular portion 530.

[0079] It is understood that the first end of the claw 410 and the limiting member 600 are located on the sliding path of the first annular portion 530. Therefore, both the first end of the claw 410 and the limiting member 600 can abut against the first annular portion 530 to limit the first annular portion 530, thereby restricting the relative sliding range between the support sleeve 500 and the tube body 100. When the first annular portion 530 abuts against the first end of the claw 410, the claw 410 can be in the locked position; when the first annular portion 530 abuts against the limiting member 600, the claw 410 can be in the unlocked position.

[0080] Furthermore, since the first annular portion 530 is located between the two ends of the support sleeve 500, the inner walls of the support sleeve 500 on both sides of the first annular portion 530 can be spaced apart from the tube body 100 to form a first gap and a second gap, respectively. The first gap can be used to accommodate the claw 410, and the second gap can be used to accommodate the first elastic member 510 and the remaining part of the limiting member 600 except for the limiting portion 610. The support sleeve 500 can provide shielding and protection for the claw 410 and the first elastic member 510.

[0081] When the depth of the second annular groove 130 is less than the diameter of the limiting member 600, the limiting member 600, which uses an elastic open ring, can partially protrude from the surface of the tube body 100. The portion protruding from the surface of the tube body 100 is located on the sliding path of the first annular portion 530, thereby enabling uniform contact and limiting of the first annular portion 530. Simultaneously, by using an elastic open ring as the limiting member 600, when sufficient circumferential force is applied to the limiting member 600, it can also rotate around the second annular groove 130. Thus, if the support sleeve 500 cannot rotate due to an accident, rotating the limiting member 600 can keep the support sleeve 500 in the locked position or allow the support sleeve 500 to slide towards the unlocked position.

[0082] Of course, in other embodiments, the limiting member 600 can also be a bolt, and the connection between the limiting member 600 and the pipe body 100 can be achieved by the bolt being screwed to the pipe body 100. At the same time, the nut of the bolt can form a limiting part 610.

[0083] To prevent the support sleeve 500 from swinging during sliding, in some optional embodiments, such as Figure 3 As shown, the tube body 100 is fitted with an annular abutment 700, which is located between the limiting part 610 and the first annular part 530. The outer peripheral surface of the abutment 700 is slidably connected to the inner wall of the support sleeve 500, thereby positioning the support sleeve 500 through the abutment 700 and the first annular part 530 to prevent the first slide from swinging during the sliding process.

[0084] Of course, the specific connection method between the abutment 700 and the tube body 100 can be either to fix the abutment 700 to the tube body 100 or to movably sleeve the abutment 700 onto the tube body 100. In other embodiments, the abutment 700 can also be fixed to the support sleeve 500, and this disclosure does not specifically limit this.

[0085] It is understandable that when the abutment 700 is movably fitted onto the tube body 100, the limiting member 600 can limit the abutment 700, preventing it from detaching from the tube body 100. Simultaneously, it also facilitates the installation or removal of the first elastic member 510. For example, the first elastic member 510 can be a spring, fitted onto the outside of the tube body 100. Both ends of the first elastic member 510 are connected to the abutment 700 and the first annular portion 530, respectively. The abutment 700 abuts against the limiting member 600 under the elastic force of the first elastic member 510. When the limiting member 600 is removed, the abutment 700 can detach from the tube body 100, thereby enabling the installation or removal of the first elastic member 510.

[0086] In some alternative embodiments, the abutment 700 may also be made of plastic.

[0087] To make the connection between the connector and the first pipe 10 more stable, in some alternative embodiments, such as Figure 3 and Figure 4 As shown, a first channel 201 is provided inside the first connector 200, and a connecting channel 101 is provided inside the tube body 100; the first connector 200 includes a plug-in part 210 and a sliding part 220 connected to each other, the first channel 201 passes through the plug-in part 210 and the sliding part 220, the sliding part 220 is slidably and sealingly connected to the connecting channel 101 along the axial direction of the tube body 100, the plug-in part 210 is located outside the tube body 100, and the projection of part of the plug-in part 210 along the axial direction of the tube body 100 is located on the tube body 100; a third elastic member 230 is provided between the first connector 200 and the tube body 100, and the third elastic member 230 is configured to drive the first connector 200 to move toward the direction close to the clearance hole 401.

[0088] It is understood that the insertion portion 210 of the first connector 200 is used for the insertion of the first pipe 10 and for sealing with the first pipe 10. When the first pipe 10 is inserted into the insertion portion 210, the thrust applied to the first pipe 10 acts on the first connector 200. After overcoming the elastic force of the third elastic member 230, the first connector 200 can slide relative to the pipe body 100, causing the first connector 200 to slide away from the clearance hole 401 (i.e., move away from the first protrusion 411 of the claw 410), thereby increasing the size of the receiving cavity 110 so that the bulge 11 of the first pipe 10 can more easily enter the receiving cavity 110. Since the projection of part of the insertion portion 210 along the axial direction of the pipe body 100 is located on the pipe body 100, the insertion portion 210 can abut against the end face of the pipe body 100 and remain relatively stationary. At this time, the first pipe 10 can be inserted into the insertion portion 210. When the thrust applied to the first pipe 10 is removed, the first connector 200 moves toward the clearance hole 401 under the elastic force of the third elastic member 230, thereby allowing the bulge 11 of the first pipe 10 to be abutted between the first protrusion 411 and the first connector 200, restricting the movement of the bulge 11 in the receiving cavity 110, and improving the stability of the first pipe 10 after it is connected to the connector.

[0089] Optionally, the third elastic element 230 can be a spring, and a portion of the third elastic element 230 can be disposed within the connecting channel 101 and abut against the first boss 540 within the connecting channel 101, while another portion of the third elastic element 230 can be disposed within the first channel 201 and abut against the second boss 240 within the first channel 201. This makes the structure of the connecting joint more compact. Of course, in other embodiments, the third elastic element 230 can also be disposed within the connecting channel 101, with one end abutting against the first boss 540 within the connecting channel 101 and the other end abutting against the end face of the first connecting member 200. In addition, besides a spring, the third elastic element 230 can also be a sheet spring.

[0090] like Figure 3 and Figure 4 As shown, optionally, the outer wall of the sliding part 220 is provided with a third annular groove 250, and an annular sealing ring 260 is installed in the third annular groove 250. The annular sealing ring 260 abuts against the inner wall of the pipe body 100 to achieve a sliding seal connection between the sliding part 220 and the pipe body 100. Of course, in other optional embodiments, the sliding seal between the sliding part 220 and the pipe body 100 can also be achieved by a packing seal.

[0091] like Figure 3 and Figure 4As shown, in order to improve the sealing performance after the first pipe 10 is connected to the connecting joint, in some optional embodiments, an annular seal 800 is provided at the end of the insertion part 210 away from the sliding part 220, and at least part of the annular seal 800 protrudes from the end face of the insertion part 210, and the insertion part 210 is sealed to the first pipe 10 through the annular seal 800.

[0092] It is understood that the annular seal 800 has a through hole in the middle, which can communicate with the first channel 201. The first pipe 10 is inserted into the through hole so that the insertion part 210 is sealed with the annular seal 800. At the same time, under the elastic force of the third elastic member 230, the annular seal 800 can also abut against the bulge 11 to seal, thereby increasing the sealing between the first pipe 10 and the connecting joint.

[0093] To facilitate the connection between the first pipe 10 and the connecting joint, in some optional embodiments, the end of the annular seal 800 away from the insertion portion 210 has a tapered portion 810. Along the direction in which the annular seal 800 protrudes from the insertion portion 210, the outer diameter of the tapered portion 810 gradually decreases. A first protrusion 411 is provided on the inner side of the second end of the claw 410, and the first protrusion 411 is disposed opposite to the insertion portion 210. Figure 4 As shown, when the insertion part 210 abuts against the first protrusion 411, a portion of the tapered part 810 is inserted into the clearance hole 401.

[0094] It is understood that when the connector is not connected to the first pipe 10, the first connector 200 can move towards the first protrusion 411 under the elastic drive of the third elastic member 230, so that the end of the insertion part 210 away from the sliding part 220 abuts against the first protrusion 411. The first protrusion 411 can prevent the first connector 200 from disengaging from the pipe body 100. The partial tapered part 810 is inserted into the clearance hole 401, so that the annular seal 800 can be closer to the end of the clearance hole 401 that is connected to the outside, so as to facilitate the operator to align and insert the first pipe 10 and the annular seal 800.

[0095] It is understood that when the outer wall of the claw 410 is provided with the aforementioned clearance groove 413, and the support sleeve 500 is connected to the pipe body 100 with the first elastic member 510, in the unlocked position, under the elastic force of the first elastic member 510, the end of the support sleeve 500 can abut against the groove wall of the clearance groove 413, so that the diameter of the clearance hole 401 is kept larger than the diameter of the first pipe 10.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A connector for connecting a first pipe (10) and a second pipe, wherein the first pipe (10) has an annular bulge (11) formed thereon, characterized in that, The connection connector includes: The pipe body (100) has a first connector (200) for inserting into the first pipe (10) and a second connector (300) for connecting to the second pipe at both ends. The claw assembly (400) includes a plurality of claws (410), the first ends of the plurality of claws (410) are wrapped around the outer peripheral wall of the tube body (100), the inner side of the second end of each claw (410) is jointly constructed to form a clearance hole (401), the second end of the claw (410) and the end of the first connector (200) away from the tube body (100) enclose a receiving cavity (110), and the receiving cavity (110) communicates with the clearance hole (401); A support sleeve (500) is slidably fitted onto the outside of the tube body (100) along the axial direction of the tube body (100), and at least a portion of the claws (410) are located between the support sleeve (500) and the tube body (100); The tube body (100) is configured to slide relative to the support sleeve (500) under the action of the bulge (11) to drive the pawl (410) to switch between a locked position and an unlocked position. In the locked position, the second end of the pawl (410) is located between the support sleeve (500) and the tube body (100), and the second end of the pawl (410) restricts the bulge (12) within the receiving cavity (110). In the unlocked position, the second end of the pawl (410) is located outside the support sleeve (500) so that the bulge (12) disengages from the receiving cavity (110) through the clearance hole (401).

2. The connecting joint according to claim 1, characterized in that, A first elastic element (510) is connected between the support sleeve (500) and the tube body (100). The first elastic element (510) is configured to push the tube body (100) to move toward the second end away from the claw (410) so as to drive the claw (410) to switch to the locking position.

3. The connecting joint according to claim 1, characterized in that, The claw assembly (400) further includes a second elastic element (420) that connects to a plurality of the claws (410). The second elastic element (420) is configured to drive the claws (410) to switch to the unlock position and keep the claws (410) in contact with the support sleeve (500).

4. The connecting joint according to claim 3, characterized in that, The outer side of the claw (410) is provided with a relief groove (413), which is located between the first end and the second end of the claw (410). In the unlocked position, the support sleeve (500) abuts against the groove surface of the relief groove (413).

5. The connecting joint according to claim 1, characterized in that, The tube body (100) is circumferentially fixed with a limiting member (600), at least a portion of the limiting member (600) protrudes from the circumferential surface of the tube body (100) to form a limiting part (610). The limiting part (610) is located on the sliding path of the support sleeve (500). The inner side of the support sleeve (500) is provided with a first groove (501) for avoiding the limiting part (610). The first groove (501) extends along the relative sliding direction between the support sleeve (500) and the tube body (100), and the first groove (501) penetrates the end of the support sleeve (500) away from the claw (410). The support sleeve (500) and / or the limiting member (600) can rotate around the circumference of the tube body (100). In the locked position, the limiting part (610) is located outside the end of the support sleeve (500) away from the claw (410).

6. The connecting joint according to claim 5, characterized in that, The inner wall between the two ends of the support sleeve (500) is provided with a first annular portion (530). The support sleeve (500) is slidably connected to the tube body (100) through the first annular portion (530). The claw (410) and the limiting member (600) are respectively located on both sides of the first annular portion (530). The first end of the claw (410) and the limiting member (600) are located on the sliding path of the first annular portion (530).

7. The connecting joint according to any one of claims 1-6, characterized in that, The first connector (200) is provided with a first channel (201), and the tube (100) is provided with a connecting channel (101). The first connector (200) includes a plug-in portion (210) and a sliding portion (220) connected to each other. The first channel (201) passes through the plug-in portion (210) and the sliding portion (220). The sliding portion (220) is slidably and sealingly connected to the connecting channel (101) along the axial direction of the tube body (100). The plug-in portion (210) is located outside the tube body (100). The projection of a portion of the plug-in portion (210) along the axial direction of the tube body (100) is located on the tube body (100). A third elastic element (230) is provided between the first connector (200) and the tube body (100), and the third elastic element (230) is configured to drive the first connector (200) to move toward the clearance hole (401).

8. The connecting joint according to claim 7, characterized in that, An annular seal (800) is provided at one end of the plug portion (210) away from the sliding portion (220). At least a portion of the annular seal (800) protrudes from the end face of the plug portion (210). The plug portion (210) is sealed to the first pipe (10) through the annular seal (800).

9. The connecting joint according to claim 8, characterized in that, The annular seal (800) has a tapered portion (810) at one end away from the insertion portion (210), and the outer diameter of the tapered portion (810) gradually decreases along the direction in which the annular seal (800) protrudes from the insertion portion (210); The second end of the claw (410) is provided with a first protrusion (411) on the inner side. The first protrusion (411) is disposed opposite to the insertion part (210). When the insertion part (210) abuts against the first protrusion (411), part of the tapered part (810) is inserted into the clearance hole (401).

10. The connecting joint according to claim 1, characterized in that, The second connector (300) is a bamboo tube, and the second connector (300) is integrally formed with the tube body (100).

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