Quick connecting structure

Abstract

The utility model is suitable for the field of connecting structures, and discloses a quick connecting structure which comprises an inner cylinder, an outer sleeve and a locking fastener. And the inner cylinder is provided with a movable fastener. The outer sleeve is arranged on the peripheral side of the inner cylinder in a sleeving mode and can slide in the axial direction of the inner cylinder relative to the inner cylinder, the outer sleeve can slide to a first position or a second position relative to the inner cylinder, the second position is located on the side, away from the sleeving opening, of the first position, and when the outer sleeve slides to the first position, the sleeving opening is located on the side, away from the sleeving opening, of the outer sleeve. The outer sleeve abuts against the fastener, so that part of the fastener protrudes out of the inner wall. The lock catch piece is arranged on the outer sleeve and can lock the outer sleeve and the inner sleeve when the outer sleeve slides to the first position. According to the quick connecting structure, the situation that the quick connecting structure and the external connecting piece are loosened due to the fact that the outer sleeve is touched by mistake can be avoided, and fastening connection of the quick connecting structure and the external connecting piece is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of connection structures, and in particular to a quick connection structure. Background Art

[0002] In order to achieve a tight connection between two pipelines, the two pipelines may be connected by a joint. For example, when the pipelines of two water pipes are connected by a joint, water can be kept flowing between the two water pipes.

[0003] At present, the joint generally includes an inner tube and an outer sleeve sleeved outside the inner tube. The inner tube is sleeved on the connected structure, and the outer sleeve is used to maintain the tight connection between the inner tube and the connected structure. However, in the process of maintaining the connection between the joint and the connected structure, the user may accidentally touch the outer sleeve, so that the outer sleeve will no longer maintain the connection between the inner tube and the connected structure, thereby causing the inner tube and the connected structure to loosen, affecting the use. Utility Model Content

[0004] The purpose of the present application is to provide a quick connection structure, which aims to solve the technical problem that the existing joints are easily loosened from the connected structure.

[0005] To achieve the above object, the present application provides a quick connection structure, comprising:

[0006] An inner cylinder, one end of which is provided with a socket, the socket is communicated with the inner cylinder, the inner cylinder is provided with a movable fastener, the inner cylinder is provided with a through hole passing through the inside and outside, the fastener is passed through the through hole, and the fastener can move along the radial direction of the inner cylinder; the inner cylinder is used to be sleeved on the external connecting piece through the socket, the fastener can move to partially protrude from the inner wall of the inner cylinder, so as to be fastened on the external connecting piece to prevent the external connecting piece from being separated from the inner cylinder;

[0007] an outer sleeve, the outer sleeve being sleeved on the circumference of the inner sleeve and being able to slide relative to the inner sleeve along the axial direction of the inner sleeve, the outer sleeve being able to slide relative to the inner sleeve to a first position or a second position, the second position being located at a side of the first position away from the socket, and when the outer sleeve slides to the first position, the outer sleeve abuts against the fastener, so that a portion of the fastener protrudes from the inner wall;

[0008] A locking member is arranged on the outer sleeve and can lock the outer sleeve and the inner sleeve when the outer sleeve slides to the first position.

[0009] In the quick connection structure of the present application, a limit piece is provided on the outer wall of the inner tube, and the locking piece is slidably provided on the outer sleeve. The locking piece can slide relative to the outer sleeve along the circumference of the outer sleeve. When the outer sleeve slides to the first position, the limit piece is located on the side of the locking piece away from the socket, and the locking piece can slide to abut against the limit piece to prevent the outer sleeve from sliding toward the second position, or slide away from the limit piece so that the outer sleeve can slide freely toward the second position.

[0010] In the quick connection structure of the present application, the outer sleeve is provided with a locking hole, and the locking hole extends along the circumference of the outer sleeve. The locking member includes a sliding button and two elastic arms connected to the sliding button. The two elastic arms are arranged at intervals along the axial direction of the outer sleeve. The two elastic arms are respectively supported on both sides of the locking hole and can slide in the locking hole along the circumference of the outer sleeve.

[0011] In the quick connection structure of the present application, among the two elastic arms, the elastic arm away from the socket is provided with adjacent protrusions and a first abutting surface on the side away from the socket, and the end of the limit member facing the socket is provided with adjacent protrusions and a second abutting surface, the first abutting surface is located on the side of the protrusion away from the second abutting surface, and the second abutting surface is located on the side of the protrusion away from the first abutting surface; when the outer sleeve slides to the first position, the protrusion and the protrusion are flush along the circumference of the outer sleeve.

[0012] In the quick connection structure of the present application, first guide surfaces are provided on both sides of the protrusion, and the first guide surfaces on both sides are inclined toward each other in the direction away from the socket. Second guide surfaces are provided on both sides of the protrusion, and the second guide surfaces on both sides are inclined toward each other in the direction toward the socket. When the outer sleeve slides to the first position, the first guide surface and the second guide surface are arranged opposite to each other.

[0013] In the quick connection structure of the present application, a protrusion is provided on a side of each of the two elastic arms away from the other elastic arm, and the protrusions of the two elastic arms are both located on one side of the inner wall of the outer sleeve.

[0014] In the quick connection structure of the present application, the outer wall of the outer sleeve is provided with a sliding groove, the sliding groove is connected to the locking hole, the sliding groove extends along the circumference of the outer sleeve, and the sliding button is slidably disposed in the sliding groove.

[0015] In the quick connection structure of the present application, the limiting member is a limiting bone extending along the axial direction of the inner tube.

[0016] The quick connection structure of the present application also includes an elastic member, the outer wall of the inner tube is provided with a first limiting protrusion, the inner wall of the outer sleeve is provided with a second limiting protrusion, the first limiting protrusion is located on the side of the second limiting protrusion away from the socket, and the elastic member is arranged between the first limiting protrusion and the second limiting protrusion to drive the outer sleeve to the first position in the absence of external force.

[0017] In the quick connection structure of the present application, the outer wall of the outer sleeve is provided with a partially concave hand-holding portion.

[0018] In the quick connection structure provided by the present application, when the quick connection structure and the external connection piece are connected, the inner tube is sleeved on the external connection structure through the sleeve interface, the outer tube is in the first position and abuts against the fastener, the fastener at least partially protrudes from the inner wall of the inner tube and is fastened on the external connection piece, so that the quick connection structure and the external connection piece are tightly connected. In addition, the locking fastener can lock the outer tube and the inner tube to maintain the outer tube in the first position, and even if an external force acts on the outer tube, it is not easy to cause the outer tube to slide relative to the inner tube, so that the quick connection structure and the external connection piece can be prevented from loosening due to accidental contact with the outer tube, thereby ensuring the tight connection between the quick connection structure and the external connection piece and maintaining the use of the quick connection structure and the external connection piece after being connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 is a schematic structural diagram of a locking member of a quick connection structure provided in an embodiment of the present application in a locked state;

[0021] Figure 2 is a schematic structural diagram of a locking member of a quick connection structure provided in an embodiment of the present application in an unlocked state;

[0022] Figure 3 is a structural schematic diagram of the outer sleeve of the quick connection structure provided in an embodiment of the present application when it slides to the second position;

[0023] Figure 4 is a cross-sectional view of a locking member of a quick connection structure provided by an embodiment of the present application in a locked state;

[0024] Figure 5 is an exploded schematic diagram of a quick connection structure provided in an embodiment of the present application;

[0025] Figure 6 is a structural schematic diagram of a locking member of a quick connection structure provided in an embodiment of the present application;

[0026] Figure 7 is a schematic structural diagram of an inner cylinder of a quick connection structure provided in an embodiment of the present application;

[0027] Figure 8 is a structural schematic diagram of an outer sleeve of a quick connection structure provided in an embodiment of the present application;

[0028] Fig. 9 It is a structural schematic diagram of the outer sleeve of the quick connection structure provided in an embodiment of the present application when it slides to the first position.

[0029] Description of Figure Numbers:

[0030] 10: inner cylinder; 101: first limiting portion; 102: first limiting protrusion; 103: third limiting portion; 104: second mounting portion;

[0031] 11: fastener; 111: abutting surface;

[0032] 12: stopper; 121: raised portion; 1211: second guide surface; 122: second abutting surface;

[0033] 20: outer sleeve; 20a: lock hole; 20b: sliding groove;

[0034] 201: Hand-held portion; 202: Arc-shaped protrusion;

[0035] 21: second limiting protrusion; 211: first mounting portion; 212: abutting portion; 22: second limiting portion;

[0036] 30: Locking piece; 31: Sliding button;

[0037] 32: elastic arm; 321: protruding member; 3211: first guide surface; 322: first abutting surface;

[0038] 40: Elastic parts. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0041] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0042] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0043] The existing joint generally includes an inner tube and an outer sleeve sleeved outside the inner tube, the inner tube is sleeved on the connected structure, and the outer sleeve is used to maintain the inner tube firmly connected to the connected structure, for example, the inner tube is sleeved on the connector of the water pipe, and the outer sleeve is used to press the fastener in the inner tube to keep the fastener pressed on the connector to prevent the connector from being separated from the joint. Generally, when it is necessary to disassemble, the outer sleeve is slid relative to the inner tube so that the outer sleeve no longer presses against the fastener. At this time, the inner tube and the connector are loosened, and the connector can be taken out. In order to maintain the tight connection between the joint and the connector during connection, a spring is generally provided between the inner tube and the outer sleeve to ensure that the outer sleeve is always pressed against the fastener. However, in the process of the joint being connected to the connector, it is still easy to accidentally touch the outer sleeve, causing the outer sleeve to slide relative to the inner tube, thereby causing the inner tube and the connector to be loosened, and even causing the inner tube and the connector to be separated, thereby affecting the use, for example, affecting the water flow between the two water pipes.

[0044] To this end, an embodiment of the present application provides a quick connection structure, which can prevent the quick connection structure and the external connecting part from loosening due to accidental touching of the outer sleeve, thereby ensuring a tight connection between the quick connection structure and the external connecting part.

[0045] In conjunction with the accompanying drawings, some embodiments of the present application are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0046] like Figures 1 to 3 As shown, a quick connection structure provided in an embodiment of the present application includes an inner sleeve 10 , an outer sleeve 20 and a locking member 30 .

[0047] Among them, one end of the inner tube 10 is provided with a socket, the socket is connected to the inner tube 10, the inner tube 10 is provided with a movable fastener 11, the inner tube 10 is provided with a through hole that passes through the inside and outside, the fastener 11 is inserted in the through hole, and the fastener 11 can move along the radial direction of the inner tube 10; the inner tube 10 is used to be sleeved on the external connecting member through the socket, and the fastener 11 can move to partially protrude from the inner wall of the inner tube 10, so as to be fastened on the external connecting member to prevent the external connecting member from being separated from the inner tube 10. The outer sleeve 20 is sleeved on the circumferential side of the inner tube 10 and can slide relative to the inner tube 10 along the axial direction of the inner tube 10. The outer sleeve 20 can slide relative to the inner tube 10 to a first position or a second position, and the second position is located on the side of the first position away from the socket. When the outer sleeve 20 slides to the first position, the outer sleeve 20 abuts against the fastener 11 so that part of the fastener 11 protrudes from the inner wall. The locking member 30 is disposed on the outer sleeve 20 and is capable of locking the outer sleeve 20 and the inner sleeve 10 when the outer sleeve 20 slides to the first position.

[0048] It should be noted that in the above description, the first sliding position of the outer sleeve 20 is the position where the outer sleeve 20 abuts against the fastener 11, and the second position is the position of the outer sleeve 20 when the fastener 11 can no longer prevent the external connecting part from detaching. It can be understood that the second position is not a specific position, it can be a position where the outer sleeve 20 moves a small part away from the first position, or it can be a position where the outer sleeve moves a large part away from the first position, without limitation.

[0049] It should be noted that one end of the quick connection structure with the socket is a quick connection end, which is used for quick connection with the external connection member, so that it can be disassembled and assembled at any time as needed, which is convenient for use. When the quick connection structure is tightly connected with the external connection member, the outer sleeve 20 is in the first position and is locked by the locking member 30. When the quick connection structure needs to be disassembled from the external connection member, the locking member 30 loosens the outer sleeve 20 and the inner sleeve 10, so that the outer sleeve 20 can slide toward the second position, and the outer sleeve 20 no longer abuts against the fastener 11 or reduces the abutment on the fastener 11, and the fastener 11 can move to the inner wall of the inner sleeve 10 so that the external connection member can be freely separated from the inner sleeve 10.

[0050] In addition, the quick connection structure can be the end of an existing pipeline, for example, it can be the end of a water pipe. Of course, the other end of the quick connection structure can also be detachably connected to the pipeline, for example, detachably connected to the water pipe. In the embodiment of the present application, the outer circumference of the other end of the quick connection structure is provided with a thread, specifically, the outer circumference of the other end of the inner tube 10 is provided with a thread, and the pipeline can be sleeved on the other end of the quick connection structure and threadedly connected to the quick connection structure.

[0051] It should be noted that the quick connection structure can be used to connect water circuits. For example, the external connection piece can be a connection piece of a water pipe, or a faucet joint, or a water supply joint of a water gun, without limitation. Of course, the quick connection structure can also be used to connect gas circuits, which will not be described in detail.

[0052] In the embodiment of the present application, when the quick connection structure and the external connection part are connected, the inner tube 10 is sleeved on the external connection structure through the sleeve, the outer sleeve 20 is in the first position and abuts against the fastener 11, and the fastener 11 at least partially protrudes from the inner wall of the inner tube 10 and is fastened on the external connection part, so that the quick connection structure and the external connection part are tightly connected. In addition, the locking member 30 can lock the outer sleeve 20 and the inner tube 10 to maintain the outer sleeve 20 in the first position. Even if an external force acts on the outer sleeve 20, it is not easy to cause the outer sleeve 20 to slide relative to the inner sleeve 10, so that the quick connection structure and the external connection part can be prevented from loosening due to accidental contact with the outer sleeve 20, thereby ensuring the tight connection between the quick connection structure and the external connection part and maintaining the use of the quick connection structure and the external connection part after connection.

[0053] like Figure 3 As shown, in the embodiment of the present application, the outer wall circumference of the inner tube 10 is provided with a first limiting portion 101, for example, the inner tube 10 is provided with a circumference of one end of the sleeve port protruding outward to form the first limiting portion 101, and the inner wall circumference of the outer sleeve 20 is provided with a second limiting portion 22, for example, the inner wall of the outer sleeve 20 is inclined toward the first limiting portion 101 The convex piece is the second limiting portion 22; the first limiting portion 101 is located on the side of the second limiting portion 22 facing the sleeve port, and when the outer sleeve 20 is in the first position, the second limiting portion 22 is abutted against the first limiting portion 101. Through the limiting, the outer sleeve 20 will not slide in the direction away from the second position toward the first position, so as to ensure that the quick connection structure can maintain a tight connection when connected with the external connection piece, and it is also convenient to realize quick disassembly and assembly with the external connection piece, for example, when disassembling, it is only necessary to slide the outer sleeve 20 in a specific direction, that is, the direction of the second position, which is convenient to use.

[0054] like Figures 1 to 3As shown, in the embodiment of the present application, a third limiting portion 103 is further provided on the circumferential side of the outer wall of the inner cylinder 10. The third limiting portion 103 is away from the sleeve interface. When the outer sleeve 20 slides toward the second position, the outer sleeve 20 can be limited to prevent the outer sleeve 20 from separating from the inner cylinder 10.

[0055] like Figure 4 and Figure 5 As shown, in the embodiment of the present application, the outer wall of the inner sleeve 10 is provided with a stopper 12, and the locker 30 is slidably provided on the outer sleeve 20. The locker 30 can slide relative to the outer sleeve 20 along the circumferential direction of the outer sleeve 20. When the outer sleeve 20 slides to the first position, the stopper 12 is located on the side of the locker 30 away from the socket, and the locker 30 can slide to abut against the stopper 12 to prevent the outer sleeve 20 from sliding toward the second position, or slide away from the stopper 12 so that the outer sleeve 20 can slide freely toward the second position. When the locker 30 abuts against the stopper 12, even if an external force acts on the outer sleeve 20, the outer sleeve 20 will be kept in the first position due to the obstruction of the stopper 12, so as to maintain the abutment force of the outer sleeve 20 on the fastener 11, thereby preventing the external connector from being separated from the inner sleeve 10, so as to avoid affecting the connection between the quick connection structure and the external connector due to accidental touch. Furthermore, it should be noted that the sliding of the outer sleeve 20 requires the application of an external force along the axial direction of the outer sleeve 20, while the unlocking of the lock member 30 requires the application of an external force along the circumferential direction of the outer sleeve 20 to the lock member 30. The two external forces are in different directions, which can further prevent the connection from being loosened due to accidental touch. In addition, when unlocking the lock of the outer sleeve 20, only the lock member 30 needs to be slid, which is easy to operate and is conducive to the disassembly and assembly of the quick connection structure.

[0056] Of course, in other embodiments, the locking member 30 can move relative to the outer sleeve 20 along the radial direction of the outer sleeve 20. When the locking member 30 locks the outer sleeve 20 and the inner sleeve 10, part of the locking member 30 is inserted into the outer wall of the inner sleeve 10 to prevent the outer sleeve 20 from sliding relative to the inner sleeve 10. After the locking member 30 is moved away from the outer wall of the inner sleeve 10, the locking member 30 will no longer lock the outer sleeve 20 and the inner sleeve 10. At this time, the outer sleeve 20 can slide freely relative to the inner sleeve 10, so as to facilitate the disassembly and assembly of the quick connection structure and the external connector.

[0057] In other embodiments, the locking member 30 may also be configured as a knob structure and rotatably connected to the outer sleeve 20 , and the inner sleeve 10 may be stopped by rotating the locking member 30 to prevent the outer sleeve 20 from sliding relative to the inner sleeve 10 .

[0058] like Figure 4 and Figure 5As shown, in the embodiment of the present application, the outer sleeve 20 is provided with a lock hole 20a, and the lock hole 20a extends along the circumference of the outer sleeve 20. The lock member 30 includes a sliding button 31 and two elastic arms 32 connected to the sliding button 31. The two elastic arms 32 are arranged at intervals along the axial direction of the outer sleeve 20. The two elastic arms 32 are respectively held on both sides of the lock hole 20a and can slide along the circumference of the outer sleeve 20 in the lock hole 20a. When locking or unlocking the outer sleeve 20 and the inner sleeve 10 by the lock member 30, the user can slide the sliding button 31 to drive the two elastic arms 32 to slide along the circumference of the outer sleeve 20. The operation is simple and convenient. In addition, when installing the lock member 30, it is only necessary to insert the two elastic arms 32 into the lock hole 20a from the outside of the outer sleeve 20. The elastic arms 32 are used to prevent the lock member 30 from being separated from the outer sleeve 20. The installation is simple and convenient, which is conducive to the production and manufacture of the quick connection structure.

[0059] like Figures 4 to 6 As shown, in the embodiment of the present application, in the two elastic arms 32, a protrusion 321 is provided on a side of each elastic arm 32 away from the other elastic arm 32, and the protrusions 321 of the two elastic arms 32 are both located on one side of the inner wall of the outer sleeve 20. The two protrusions 321 can further prevent the lock member 30 from being separated from the outer sleeve 20. In addition, when installing the lock member 30, in the process of inserting the two elastic arms 32 into the lock hole 20a, the elastic arm 32 with the protrusion 321 can smoothly pass through the lock hole 20a through the elastic deformation of the elastic arm 32. Specifically, the two elastic arms 32 are bent toward each other to smoothly pass through the lock hole 20a. In this way, the installation of the lock member 30 is facilitated. Of course, in other embodiments, the protrusion 321 can also be provided on only one of the elastic arms 32.

[0060] Exemplarily, both protrusions 321 are provided with guide surfaces facing the inner cylinder 10, and the two guide surfaces are arranged to be inclined toward each other in the direction toward the inner cylinder 10, so that when the two elastic arms 32 are inserted into the locking hole 20a, the elastic arms 32 can be bent by the guide surfaces and extend into the locking hole 20a.

[0061] like Figures 4 to 6 As shown, in the embodiment of the present application, the outer wall of the outer sleeve 20 is provided with a sliding groove 20b, the sliding groove 20b is connected to the lock hole 20a, the sliding groove 20b extends along the circumference of the outer sleeve 20, and the sliding button 31 is slidably arranged in the sliding groove 20b. In combination with the above, the locking member 30 can be stably placed on the outer sleeve 20 through the sliding button 31 and the protruding member 321, and it is not easy to be detached. In addition, when the user locks and unlocks the outer sleeve 20 and the inner sleeve 10 through the locking member 30, he only needs to slide the sliding button 31 along the circumference, which is simple and convenient to operate.

[0062] For example, when the outer sleeve 20 is in the first position, when the sliding button 31 slides to one end of the sliding groove 20b, the locking member 30 just abuts against the limiting member 12. When the sliding button 31 slides to the other end of the sliding groove 20b, the outer sleeve 20 can slide freely. In this way, when the user slides the locking member 30 to lock or unlock, he only needs to slide the sliding button 31 to the two ends of the sliding groove 20b, which is simple and convenient to operate.

[0063] like Figures 4 to 7 As shown, in the embodiment of the present application, of the two elastic arms 32, the elastic arm 32 away from the socket is provided with adjacent protrusions 321 and first abutting surfaces 322 on the side away from the socket, and the end of the stopper 12 facing the socket is provided with adjacent protrusions 121 and second abutting surfaces 122, the first abutting surface 322 is located on the side of the protrusion 321 away from the second abutting surface, and the second abutting surface 122 is located on the side of the protrusion 121 away from the first abutting surface 322; when the outer sleeve 20 slides to the first position, the protrusion 121 and the protrusion 321 are flush along the circumference of the outer sleeve 20. When the locking member 30 abuts against the stopper 12, the protrusion 321 abuts against the second abutting surface 122, or the protrusion 121 abuts against the first abutting surface 322, so as to maintain the locking of the outer sleeve 20 and the inner sleeve 10. In this embodiment, when the lock member 30 slides from the unlocked state to the locked state, or slides from the locked state to the unlocked state, the protrusion 321 will pass over the protrusion 121, so that when locking or unlocking, an obvious sound can be heard, for example, an obvious "click" sound, to prompt the user's operation and facilitate the user. In addition, after the protrusion 321 passes over the protrusion 121, under the limiting effect of the protrusion 121, the lock member 30 is not easy to slide to the unlocked state, which can further avoid accidental unlocking. It should be noted that since the protrusion 321 is set on the elastic arm 32, when the protrusion 321 passes over the protrusion 121, it can be achieved by the elastic deformation of the elastic arm 32.

[0064] Of course, in other embodiments, the first abutting surface 322 is located on the side of the protruding member 321 facing the second abutting surface, and the second abutting surface 122 is located on the side of the protruding portion 121 facing the first abutting surface 322. In other words, when the protruding member 321 slides from the unlocked state to the locked state, or slides from the locked state to the unlocked state, the protruding member 321 will not pass over the protruding portion 121, and the protruding portion 121 acts as a limit for the protruding member 321, which can prevent the locking member 30 from sliding excessively and disengaging from the lock.

[0065] like Figures 4 to 7As shown, in the embodiment of the present application, first guide surfaces 3211 are provided on both sides of the protrusion 321, and the first guide surfaces 3211 on both sides are inclined toward each other in the direction away from the socket, and second guide surfaces 1211 are provided on both sides of the protrusion 121, and the second guide surfaces 1211 on both sides are inclined toward each other in the direction toward the socket; when the outer sleeve 20 slides to the first position, the first guide surface 3211 and the second guide surface 1211 are arranged opposite to each other. In this way, when the protrusion 321 passes over the protrusion 121, the first guide surface 3211 will contact the second guide surface 1211, and the elastic arm 32 is pushed to deform by the extrusion of the inclined surface, so that the protrusion 321 passes over the protrusion 121. The first guide surface 3211 and the second guide surface 1211 are both set as inclined surfaces, which can make the protrusion 321 slide from the unlocked state to the locked state, or slide from the locked state to the unlocked state more smoothly, which is convenient for users to operate.

[0066] For example, the two elastic arms 32 are both provided with protrusions 321 of the above shape, and are symmetrically arranged about the centers of the two elastic arms 32. Such a structure can, on the one hand, prevent the locking member 30 from being separated from the outer sleeve 20, and on the other hand, since the two elastic arms 32 have the same structure, it is also convenient to make molds and save costs.

[0067] like Figure 4 , Figure 5 as well as Figure 7 As shown, in the embodiment of the present application, the stopper 12 is a stopper bone extending along the axial direction of the inner tube 10. When the lock member 30 is pressed against the stopper 12, when the outer sleeve 20 is subjected to an external force to slide toward the second position, the stopper 12 will be subjected to pressure in the axial direction. In this way, setting the stopper 12 as a stopper bone can increase the structural strength of the stopper 12 and avoid fracture or damage during the stopper. Of course, in other embodiments, the stopper 12 can also be a block-shaped structure protruding from the outer wall of the inner tube 10 to ensure that it can stably stop.

[0068] like Figure 4 and Figure 5As shown, in the embodiment of the present application, an elastic member 40 is further included, the outer wall of the inner tube 10 is provided with a first limiting protrusion 102, the inner wall of the outer sleeve 20 is provided with a second limiting protrusion 21, the first limiting protrusion 102 is located on the side of the second limiting protrusion 21 away from the socket, and the elastic member 40 is arranged between the first limiting protrusion 102 and the second limiting protrusion 21, so as to drive the outer sleeve 20 to the first position without the action of external force. When the quick connection structure is connected to the external connection piece, the outer sleeve 20 can be maintained in the second position by external force, so that the inner tube 10 can be sleeved on the external connection piece. After the inner tube 10 is well connected with the external connection piece, the outer sleeve 20 can be loosened, and under the action of the elastic member 40, the outer sleeve 20 can slide to the first position to achieve a fast connection to the external connection piece. In this way, when the quick connection structure is installed, the connection can be quickly performed for easy use.

[0069] Exemplarily, the first limiting protrusion 102 is a limiting ring.

[0070] Exemplarily, the elastic member 40 is a spring disposed around the inner tube 10. The spring is sleeved around the inner tube 10 to avoid separation from the inner tube 10 and to provide a stable elastic force.

[0071] Exemplarily, the limiting member 12 is a limiting bone, and extends to be connected to the first limiting protrusion 102. In this way, the overall structure of the inner cylinder 10 can be ensured to be stable and reliable.

[0072] like Figure 1 and Fig. 9 As shown, in the embodiment of the present application, the outer wall of the outer sleeve 20 is provided with a partially concave hand-held portion 201. The user can slide the outer sleeve 20 by holding the hand-held portion 201, and the concave portion is convenient for the user to move, which is convenient for the user to use.

[0073] Exemplarily, the hand-held portion 201 is disposed on the other side of the outer sleeve 20 relative to the locking member 30 .

[0074] Exemplarily, a concave portion of the hand-held portion 201 is provided with a direction indicator icon for indicating the direction in which the outer sleeve 20 slides from the first position to the second position.

[0075] like Figure 1 and Fig. 9 As shown, in the embodiment of the present application, the outer wall of the outer sleeve is further provided with a plurality of arc-shaped protrusions 202 spaced apart along the axial direction of the outer sleeve 20. When the outer sleeve 20 is slid by hand, the friction force can be increased by the arc-shaped protrusions 202, so as to facilitate the user to slide the outer sleeve 20.

[0076] Exemplarily, the arc-shaped protrusion 202 is disposed between the hand-held portion 201 and the locking member 30 .

[0077] like Figure 4 , Figure 5 as well as Figure 7 As shown, in the embodiment of the present application, the inner tube 10 is provided with a through hole that passes through the inside and outside, one end of the fastener 11 is connected to the side wall of the through hole, and the other end is a free end. The fastener 11 has a support surface 111 facing the outer sleeve 20. In the direction away from the socket, the support surface 111 is inclined toward the inner tube 10. In the absence of external force, the fastener 11 is accommodated in the inner wall of the inner tube 10 so that the external connection piece can be inserted into the inner tube 10 or extracted from the inner tube 10. When the outer sleeve 20 moves from the second position to the first position, the inner wall of the outer sleeve 20 will contact the support surface 111, for example, part of the second limit portion 22 mentioned above will contact the support surface 111. Since the support surface 111 is an inclined surface, the inner wall of the outer sleeve will gradually press the fastener 11 into the inner tube 10 until the outer sleeve 20 slides to the first position, and the fastener 11 at least partially protrudes from the inner wall of the inner tube 10 so that it can be fastened on the external connection piece to prevent the external connection piece from being separated. When the outer sleeve 20 slides toward the second position, the elastically deformed fastener 11 returns to its initial state, so that the external connecting member can be inserted into or withdrawn from the inner sleeve 10 .

[0078] Exemplarily, the abutting surface 111 of the fastener 11 is a concave arc surface, so that the outer sleeve 20 can smoothly abut against the fastener 11 .

[0079] Exemplarily, the inner cylinder 10 is provided with a plurality of fasteners 11 , for example, the inner cylinder 10 is provided with three fasteners 11 spaced around the center of the inner cylinder 10 to ensure stable fixation of the external connecting piece.

[0080] like Figure 5 , Figure 7 as well as Figure 8 As shown, in the embodiment of the present application, the second position-limiting protrusion 21 includes a plurality of abutting portions 212 and a plurality of first mounting portions 211, each first mounting portion 211 is disposed between two adjacent abutting portions 212, and each abutting portion 212 corresponds to a fastener 11, for abutting the corresponding fastener 11. For example, the inner tube 10 is provided with three fasteners 11, and the second position-limiting portion 22 includes three abutting portions 212 and three first mounting portions 211.

[0081] like Figure 5 , Figure 7 as well as Figure 8As shown, in the embodiment of the present application, the outer wall of the inner cylinder 10 is convexly provided with a second mounting portion 104 for mounting the fastener 11, the through hole of the inner cylinder 10 is provided at the second mounting portion 104, and each first mounting portion 211 is adjacently provided between two adjacent second mounting portions 104. For example, the inner cylinder 10 is provided with three second mounting portions 104, and the second limiting portion 22 includes three abutting portions 212 and three first mounting portions 211. In this way, when the outer sleeve 20 is installed on the inner cylinder 10, the gap between the first mounting portion 211 and the adjacent second mounting portion 104 can correspond to each other, so as to stably and align the outer sleeve 20.

[0082] like Figure 5 , Figure 7 as well as Figure 8 As shown, exemplarily, the inner cylinder 10 is provided with a plurality of limit members 12, each limit member 12 is arranged between two adjacent second mounting portions 104, and one of the first mounting portions 211 of the outer sleeve 20 is provided with a locking member 30. In this way, when installing the outer sleeve 20, no matter which two adjacent second mounting portions 104 the first mounting portion 211 provided with the locking member 30 is placed, it can be ensured that the locking member 30 can achieve a limiting effect on the outer sleeve 20 with one of the limit members 12, thereby simplifying the assembly of the outer sleeve 20 and facilitating the production and manufacture of the quick connection structure.

[0083] Exemplarily, the first mounting portion 211 is provided with the aforementioned second limiting portion 22 at the end portion facing the socket. Specifically, the second limiting portion 22 is a plurality of spaced apart protrusions, which are arranged at an angle. When installing the outer sleeve 20, the outer sleeve 20 can be inserted into the inner cylinder 10 from one side of the socket of the inner cylinder 10. The protrusion is elastically deformed when contacting the inner cylinder 10 and bends toward the outer sleeve 20 until the protrusion is placed on the side of the first limiting portion 101 away from the socket. The protrusion returns to its original position to complete the assembly of the outer sleeve 20. The assembly is quick and convenient, which is conducive to the production and manufacture of the quick connection structure.

[0084] In the embodiment of the present application, a docking ring is provided on the inner wall of the inner tube 10, and the docking ring is located on the side of the fastener 11 away from the socket. When the external connector is inserted into the inner tube 10 from the socket, the end of the external connector can abut against the docking ring to ensure a stable connection between the quick connection structure and the external connector.

[0085] In some embodiments, a sealing ring is further provided on the side of the docking ring facing the sleeve, so as to ensure the sealing of the connection between the quick connection structure and the external connector after the external connector is docked with the docking ring. For example, when used as a water connection, water can be prevented from seeping out between the two.

[0086] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A quick connection structure, characterized in that: include: An inner cylinder, one end of which is provided with a socket, the socket is communicated with the inner cylinder, the inner cylinder is provided with a movable fastener, the inner cylinder is provided with a through hole passing through the inside and outside, the fastener is passed through the through hole, and the fastener can move along the radial direction of the inner cylinder; the inner cylinder is used to be sleeved on the external connecting piece through the socket, the fastener can move to partially protrude from the inner wall of the inner cylinder, so as to be fastened on the external connecting piece to prevent the external connecting piece from being separated from the inner cylinder; an outer sleeve, the outer sleeve being sleeved on the circumference of the inner sleeve and being able to slide relative to the inner sleeve along the axial direction of the inner sleeve, the outer sleeve being able to slide relative to the inner sleeve to a first position or a second position, the second position being located at a side of the first position away from the socket, and when the outer sleeve slides to the first position, the outer sleeve abuts against the fastener, so that a portion of the fastener protrudes from the inner wall; A locking member is arranged on the outer sleeve and can lock the outer sleeve and the inner sleeve when the outer sleeve slides to the first position.

2. The quick connection structure according to claim 1, characterized in that: The outer wall of the inner cylinder is provided with a limit piece, and the locking piece is slidably provided on the outer sleeve. The locking piece can slide relative to the outer sleeve along the circumference of the outer sleeve. When the outer sleeve slides to the first position, the limit piece is located on the side of the locking piece away from the socket. The locking piece can slide to abut against the limit piece to prevent the outer sleeve from sliding toward the second position, or slide away from the limit piece so that the outer sleeve can slide freely toward the second position.

3. The quick connection structure according to claim 2, characterized in that: The outer sleeve is provided with a locking hole, which extends along the circumference of the outer sleeve. The locking member includes a sliding button and two elastic arms connected to the sliding button. The two elastic arms are arranged at intervals along the axial direction of the outer sleeve. The two elastic arms are respectively supported on both sides of the locking hole and can slide in the locking hole along the circumference of the outer sleeve.

4. The quick connection structure according to claim 3, characterized in that: Among the two elastic arms, the elastic arm away from the socket is provided with adjacent protrusions and a first abutting surface on the side away from the socket, and the end of the limit member facing the socket is provided with adjacent protrusions and a second abutting surface, the first abutting surface is located on the side of the protrusion away from the second abutting surface, and the second abutting surface is located on the side of the protrusion away from the first abutting surface; when the outer sleeve slides to the first position, the protrusion and the protrusion are flush along the circumference of the outer sleeve.

5. The quick connection structure according to claim 4, characterized in that: First guide surfaces are provided on both sides of the protrusion, and the first guide surfaces on both sides are inclined toward each other in a direction away from the socket. Second guide surfaces are provided on both sides of the protrusion, and the second guide surfaces on both sides are inclined toward each other in a direction toward the socket. When the outer sleeve slides to the first position, the first guide surface and the second guide surface are arranged opposite to each other.

6. The quick connection structure according to claim 3, characterized in that: Among the two elastic arms, a protrusion is provided on a side of each elastic arm away from the other elastic arm, and the protrusions of the two elastic arms are both located on one side of the inner wall of the outer sleeve.

7. The quick connection structure according to claim 3, characterized in that: The outer wall of the outer sleeve is provided with a sliding groove, the sliding groove is communicated with the locking hole, the sliding groove extends along the circumference of the outer sleeve, and the sliding button is slidably arranged in the sliding groove.

8. The quick connection structure according to claim 2, characterized in that: The limiting member is a limiting bone extending along the axial direction of the inner tube.

9. The quick connection structure according to claim 1, characterized in that: It also includes an elastic member, the outer wall of the inner cylinder is provided with a first limiting protrusion, the inner wall of the outer sleeve is provided with a second limiting protrusion, the first limiting protrusion is located on the side of the second limiting protrusion away from the socket, and the elastic member is arranged between the first limiting protrusion and the second limiting protrusion to drive the outer sleeve to the first position in the absence of external force.

10. The quick connection structure according to claim 1, characterized in that: The outer wall of the outer sleeve is provided with a partially concave hand-holding portion.

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