Insertion pipe joint and water tank applying same

Abstract

The utility model discloses an intubation joint and discloses a water tank with the intubation joint, the intubation joint is characterized in that a main body is provided with a flow channel, a pipe cavity and an inserting part, the pipe cavity is communicated with the flow channel, and the pipe cavity penetrates through the inserting part; a groove is formed in the outer wall of the connecting pipe in the circumferential direction, and the connecting pipe can be inserted into the pipe cavity and communicate with the flow channel. The two locking pieces can be installed in the inserting part in a relative sliding mode, each locking piece is provided with a clamping part, a sleeving space which can be expanded or shrunk along with relative movement of the two locking pieces is defined between the two clamping parts, and the sleeving space is located on the inserting path of the connecting pipe relative to the pipe cavity; the sleeving space is configured in a manner that the clamping part is clamped in the groove when the sleeving space is reduced and the clamping part leaves the groove when the sleeving space is expanded; an elastic piece is arranged between the main body and each locking piece, and the elastic piece applies an elastic acting force to the locking pieces, wherein the elastic acting force enables the sleeving space to tend to be shrunk; the overall structure is simple, quick assembly and disassembly can be achieved, and use is convenient, stable and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe joint device, in particular to a kind of pipe connector and water tank applied to it. BACKGROUND

[0002] When pipeline is connected with pipeline, or pipeline is connected with valve, the safety and reliability of pipeline are very important, and the connection usually adopts pipe thread connection, but now with the increase of labor cost, the mode of pipe thread connection is very time-consuming and labor-intensive;Sometimes because the installation site is narrow, it is not easy to operate, especially for the assembly and disassembly of large quantities of products on production line, pipe thread connection seriously affects work efficiency. SUMMARY

[0003] The utility model at least aims to solve one of the above technical problems in the related art to some extent. To this end, the utility model provides a pipe connector.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] The utility model further provides a water tank with the above pipe connector.

[0006] According to the pipe connector of the first aspect embodiment of the utility model, comprising:

[0007] Main body, flow channel, tube cavity and insertion part are arranged on the main body, the tube cavity is communicated with the flow channel, and the tube cavity penetrates the insertion part;

[0008] Connecting pipe, a groove is arranged on the outer wall of the connecting pipe in the circumferential direction, and the connecting pipe can be inserted into the tube cavity and communicated with the flow channel;

[0009] Lock piece, two lock pieces are slidably installed in the insertion part, the lock piece has a clamping part, the clamping parts between the two lock pieces define a sleeve space that expands or shrinks with the relative movement of the two lock pieces, the sleeve space is located on the insertion path of the connecting pipe relative to the tube cavity, and the sleeve space is configured to be capable of clamping into the groove when it shrinks and capable of leaving the groove when it expands;

[0010] Elastic member, the elastic member is installed between the main body and each lock piece, and the elastic member exerts an elastic force on the lock piece, so that the sleeve space tends to shrink.

[0011] According to the pipe connector of the utility model embodiment, at least has the following beneficial effects: the overall structure is simple, can realize quick assembly and disassembly, is convenient to use and stable and reliable.

[0012] According to some embodiments of the utility model, the clamping part has a clamping surface in the shape of a curved surface, the clamping surfaces of the two clamping parts are oppositely arranged, and the sleeve joint space is defined between the two clamping surfaces.

[0013] According to some embodiments of the utility model, the moving direction of the lock piece relative to the main body is the first direction, the lock piece further comprises cantilevers arranged on both sides of the clamping part and extending in the same direction along the first direction, and the two side inner walls of the plug-in part are provided with sliding grooves in the first direction.

[0014] According to some embodiments of the utility model, the direction in which the connecting pipe is inserted into the pipe cavity is the second direction, the sliding groove comprises a first sliding groove and a second sliding groove, the two side inner walls of the plug-in part are provided with the first sliding groove and the second sliding groove distributed along the second direction, the cantilevers on both sides of one of the lock pieces are correspondingly slidably connected in the first sliding grooves on both sides, the cantilevers on both sides of the other lock piece are correspondingly slidably connected in the second sliding grooves on both sides, and the cantilevers of the two lock pieces are staggered in the first direction.

[0015] According to some embodiments of the utility model, the clamping part is a semicircular cylindrical structure with a semicircular ring-shaped radial cross section, the axial direction of the clamping part is consistent with the direction in which the connecting pipe is inserted into the flow channel, and the two ends of the two clamping parts in the second direction are flush.

[0016] According to some embodiments of the utility model, one end of the cantilever away from the clamping part is provided with a clamping hook, the clamping hook is located outside the sliding groove in the first direction, when the lock piece moves towards the outside of the plug-in part, the two clamping parts relatively approach and move to the state that the clamping hooks abut against the outside of the end of the sliding groove.

[0017] According to some embodiments of the utility model, first limiting tables are arranged on the opposite sides of the two cantilevers on the same lock piece, second limiting tables are arranged on both sides of the clamping part, when the lock piece moves towards the inside of the plug-in part, the two clamping parts can move away to the state that the first limiting table on one of the lock pieces and the second limiting table on the other lock piece abut against each other.

[0018] According to some embodiments of the utility model, the connecting pipe has a first end, the connecting pipe is inserted into the pipe cavity from the first end, the circumferential outer wall of the first end is arranged as a tapered guide surface, and the outer diameter of the tapered guide surface gradually decreases from the direction of the pipe cavity to the flow channel.

[0019] According to some embodiments of the utility model, a plurality of sealing rings are arranged on the outer wall of the connecting pipe between the groove and the first end, and the sealing rings abut against the cavity wall of the pipe cavity.

[0020] The water tank according to the second aspect of the present application comprises a pipe connector.

[0021] The water tank according to the present application has at least the following beneficial effects: when installing, the pipe connector is only needed to be inserted into the lumen, so that the water tank and the external water pipe can be connected; when disassembling, the pipe connector and the main body are only needed to be separated, so that the installation and disassembly are very convenient.

[0022] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0024] Figure 1 is a structural schematic view of the pipe connector;

[0025] Figure 2 is a structural exploded view of Figure 1 ;

[0026] Figure 3 is a structural schematic view of the main body;

[0027] Figure 4 is a structural schematic view of the locking piece;

[0028] Figure 5 is a structural schematic view of the pipe connector;

[0029] Figure 6 is a schematic view of the internal structure in the downward direction when the pipe connector is not inserted into the pipe connector;

[0030] Figure 7 is a schematic view of the internal structure in the front direction in one kind of use state of the pipe connector;

[0031] Figure 8 is a schematic view of the internal structure in the front direction of Figure 1 ;

[0032] Reference signs: main body 100; flow channel 110; lumen 120; pipe connector 130; sliding groove 140; first sliding groove 141; second sliding groove 142; pipe connector 200; recess 210; first end 220; taper guide surface 221; sealing ring 230; locking piece 300; clamping part 310; clamping surface 311; cantilever 320; clamping hook 321; first limiting table 330; second limiting table 340; sleeve space 400; elastic member 500. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below with reference to the attached drawings, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application.

[0034] The utility model relates to a kind of pipe connector, including main body 100, connecting pipe 200, lock piece 300 and elastic piece 500.

[0035] As Figure 1 , Figure 2 , Figure 3 , Figure 4 And Figure 6As shown, the main body 100 is provided with a flow channel 110, a tube cavity 120 and a plug-in part 130. In the direction shown, a tube body extends from the lower part of the main body 100, and the inside of the tube body constitutes the flow channel 110. The tube body can be a straight tube, an elbow tube or the like. The tube cavity 120 is opened in the upper part of the main body 100, and the lower end of the tube cavity 120 is in communication with the upper end of the flow channel 110. The shape of the tube cavity 120 is adapted to the shape of the connecting pipe 200. The connecting pipe 200 is inserted into the tube cavity 120 from top to bottom, and the tube cavity 120 accommodates a part of the tube body of the connecting pipe 200. The plug-in part 130 is provided on the main body 100 from left to right. The inside of the plug-in part 130 is hollow and used for mounting the lock piece 300. The tube cavity 120 penetrates the plug-in part 130. The outer wall of the connecting pipe 200 is provided with a groove 210, which is circularly recessed along the circumference of the connecting pipe 200. When the connecting pipe 200 is inserted into the tube cavity 120, the groove 210 is located in the tube cavity 120 and opposite the plug-in part 130. Two lock pieces 300 are respectively inserted and mounted into the plug-in part 130 from the left and right sides of the main body 100. The two lock pieces 300 slide relative to each other in the plug-in part 130. The lock piece 300 has a clamping part 310. The clamping parts 310 of the two lock pieces 300 define a sleeving space 400 therebetween. The sleeving space 400 is located on the insertion path of the connecting pipe 200 relative to the tube cavity 120, that is, after the connecting pipe is inserted into the tube cavity 120, the connecting pipe passes through the sleeving space 400. The sleeving space 400 changes with the relative movement of the two lock pieces 300. For example, when the two lock pieces 300 are relatively close to each other, the two clamping parts 310 are also relatively close to each other, so that the sleeving space 400 is reduced; when the two lock pieces 300 are relatively far away from each other, the two clamping parts 310 are also relatively far away from each other, so that the sleeving space 400 is enlarged. Alternatively, when the two lock pieces 300 are relatively close to each other, the two clamping parts 310 are relatively far away from each other, so that the sleeving space 400 is enlarged; when the two lock pieces 300 are relatively far away from each other, the two clamping parts 310 are relatively close to each other, so that the sleeving space 400 is reduced. In the embodiment, one lock piece 300 is inserted into the plug-in part 130 from left to right, and the other lock piece 300 is inserted into the plug-in part 130 from right to left, and the two lock pieces 300 are distributed left and right. The clamping part 310 of the left lock piece 300 is located to the right of the clamping part 310 of the right lock piece 300, and the two clamping parts 310 are staggered. When the two lock pieces 300 are relatively close to each other, that is, the left lock piece 300 moves to the right while driving the clamping part 310 to move to the right, and the right lock piece 300 moves to the left while driving the clamping part 310 to move to the left, the two clamping parts 310 are relatively far away from each other, and the sleeving space 400 is enlarged. When the two lock pieces 300 are relatively far away from each other, that is, the left lock piece 300 moves to the left while driving the clamping part 310 to move to the left, and the right lock piece 300 moves to the right while driving the clamping part 310 to move to the right, the two clamping parts 310 are relatively close to each other, and the sleeving space 400 is reduced. The elastic piece 500 is mounted between the main body 100 and the lock piece 300.Each lock piece 300 can correspond to connect an elastic piece 500. The elastic piece 500 can select spring and the like. The elastic piece 500 takes the main body 100 as support, and exerts elastic force on the lock piece 300, and the elastic force drives two lock pieces 300 to move in the direction of narrowing the sleeve space 400. Initially, the connector 200 is not inserted into the lumen 120. Two lock pieces 300 under the action of the elastic piece 500, and the sleeve space 400 is narrowed to the minimum. As shown. Figure 7 When the connector 200 needs to be installed, press two lock pieces 300, and the elastic piece 500 is elastically deformed, the sleeve space 400 is enlarged, and then the connector 200 is inserted into the lumen 120. As shown Figure 8 The two lock pieces 300 are loosened, and the sleeve space 400 is narrowed under the elastic force of the elastic piece 500, and the two clamping portions 310 are clamped into the groove 210 of the connector 200. The connector 200 is clamped and locked by the two clamping portions 310, and the connector 200 is limited to be taken out of the lumen 120 in the axial direction. The connector 200 communicates with the flow channel 110. When the connector 200 needs to be detached from the main body 100, two lock pieces 300 need to be pressed at the same time, so that the two clamping portions 310 are separated from the groove 210, and the axial limit of the connector 200 is cancelled. If one of the lock pieces 300 is moved, the connector 200 cannot be taken out of the lumen 120 under the limiting action of the clamping portion 310 of the other lock piece 300, so as to avoid the risk of unlocking the connector 200 due to accidental touch. The overall structure of the cannula connector is simple, can realize quick assembly and disassembly, is convenient to use, and is stable and reliable.

[0036] The utility model also relates to a water tank, which applies the cannula connector in any embodiment. The connector 200 can be preassembled at the bottom of the water tank, and the flow channel 110 on the main body 100 is connected to the external water pipe. When installing, the connector 200 only needs to be inserted into the lumen 120, so that the water tank and the external water pipe can be connected. When disassembling, the connector 200 and the main body 100 can be separated, and the assembly and disassembly are very convenient.

[0037] In an embodiment, the clamping portion 310 has a clamping surface 311, which is arc-shaped. The clamping surfaces 311 of the two clamping portions 310 are arranged opposite to each other, i.e., one clamping surface 311 faces the other clamping surface 311. The clamping surfaces 311 define a sleeve space 400 therebetween. The arc shape of the clamping surface 311 is matched with the arc shape of the groove 210. After the clamping portion 310 is clamped into the groove 210, the clamping surface 311 can be attached to the groove wall of the groove 210, thereby increasing the contact area between the clamping portion 310 and the groove 210. When the two clamping portions 310 are clamped to the pipe 200, the edges of the two clamping surfaces 311 can abut against each other, so that the sleeve space 400 has a hollow cylindrical shape matched with the groove 210, and the two clamping portions 310 fully enclose the pipe segment of the pipe 200 where the groove 210 is located.

[0038] Based on the above embodiments, as shown in Figure 3 、 Figure 4 、 Figure 6 and Figure 7 , the moving direction of the locking piece 300 relative to the main body 100 is the first direction, which is the left-right direction in the illustrated direction. The locking piece 300 further has two cantilever arms 320. The two cantilever arms 320 extend out from the front and back sides of the clamping portion 310 in the same direction along the first direction, and the two cantilever arms 320 are parallel to each other. The front and back inner walls of the insertion portion 130 are provided with sliding grooves 140 along the first direction. The cantilever arms 320 are slidably matched with the sliding grooves 140 one by one. The movement of the locking piece 300 is guided by the cooperation of the cantilever arms 320 and the sliding grooves 140. The direction in which the pipe 200 is inserted into the pipe cavity 120 is defined as the second direction, which is the up-down direction in the illustrated direction. The sliding grooves 140 include first sliding grooves 141 and second sliding grooves 142. The front and back inner walls of the insertion portion 130 are provided with the first sliding grooves 141 and the second sliding grooves 142. The first sliding grooves 141 and the second sliding grooves 142 on the same side wall are distributed up and down along the second direction. The two cantilever arms 320 of one of the locking pieces 300 are slidably matched with the first sliding grooves 141 on the two sides. The two cantilever arms 320 of the other locking piece 300 are slidably matched with the second sliding grooves 142 on the two sides. That is, the cantilever arms 320 between the two locking pieces 300 are distributed up and down. The cantilever arms 320 of the two locking pieces 300 are staggered in the first direction, and at this time, the clamping portions 310 of the two locking pieces 300 are staggered in the left-right position, i.e., the clamping portion 310 of the left locking piece 300 is located to the right of the clamping portion 310 of the right locking piece 300. In this way, the space occupation in the first direction can be saved, and after the pipe 200 is installed, the pipe 200 can limit the two locking pieces 300 from being pulled out to the outside of the insertion portion 130, respectively.

[0039] Further, the clamping portion 310 is a semi-cylindrical structure with a semi-circular cross section. The axial direction of the clamping portion 310 is consistent with the direction in which the connector 200 is inserted into the flow channel 110. That is, the axial direction of the clamping portion 310 is in the second direction. The upper and lower ends of the two clamping portions 310 in the second direction are flush. When the connector 200 is pressed downward relative to the lumen 120 after the clamping portion 310 is clamped to the groove 210, the top of the two clamping portions 310 can support the connector 200.

[0040] Further, the end of the cantilever 320 away from the clamping portion 310 is provided with a clamping hook 321. The clamping hook 321 is located outside the sliding groove 140 in the first direction. Taking the left lock piece 300 in the figure as an example, the cantilever 320 of the lock piece 300 extends to the right from the clamping portion 310. The clamping hook 321 is provided at the right end of the cantilever 320. After the cantilever 320 is slidably connected to the corresponding sliding groove 140 in the first direction, the clamping hook 321 is located to the right of the right end of the sliding groove 140. When the left lock piece 300 moves to the left towards the outside of the insertion portion 130, the clamping hook 321 gradually approaches the right end of the sliding groove 140 until the clamping hook 321 abuts against the right end of the sliding groove 140, so as to limit the left lock piece 300 from continuing to move to the left and falling out of the insertion portion 130. The corresponding clamping hook 321 of the right lock piece 300 limits the travel of the right lock piece 300 to the right to avoid falling out of the insertion portion 130 to the right.

[0041] As shown in Figure 4 and Figure 6 , the opposite sides of the two cantilevers 320 on the same lock piece 300 are provided with first limiting platforms 330. The first limiting platform 330 protrudes from the inner side of the cantilever 320 towards the other cantilever 320. The two sides of the clamping portion 310 are provided with second limiting platforms 340. When the lock piece 300 moves towards the inside of the insertion portion 130, the two clamping portions 310 can move away from each other until the first limiting platform 330 on one lock piece 300 abuts against the second limiting platform 340 on the other lock piece 300. That is, the two lock pieces 300 move closer to each other, and the sleeve space 400 gradually expands to unlock the connector 200. The mutual abutment of the first limiting platform 330 between the two lock pieces 300 and the second limiting platform 340 limits the travel of the flow lock piece 300 towards the inside of the clamping portion 310.

[0042] In an embodiment, as shown in Figure 5 , Figure 7 and Figure 8As shown, one end of the connecting pipe 200 is defined as the first end 220. The connecting pipe 200 is inserted into the lumen 120 from the first end 220. The circumferential outer wall of the first end 220 is provided with a taper guide surface 221, the outer diameter of the taper guide surface 221 gradually decreases from the lumen 120 to the direction of the flow passage 110. When the connecting pipe 200 is not inserted into the lumen 120, the two locking pieces 300 are close to the minimum position under the action of the elastic piece 500. At this time, the sleeving space 400 is smaller than the maximum outer diameter of the first end 220 and greater than the minimum outer diameter of the first end 220. When the first end 220 is inserted into the lumen 120, the taper guide surface 221 of the first end 220 abuts on the top of the sleeving space 400 at this time, the first end 220 continues to move in the second direction, the taper guide surface 221 pushes the two clamping portions 310 apart in the first direction, and the taper guide surface 221 passes through the sleeving space 400 until the groove 210 is aligned with the sleeving space 400, and the two locking pieces 300 are automatically reset under the action of the elastic piece 500, and the clamping portions 310 are clamped into the groove 210. In this way, the connecting pipe 200 does not need to be operated during the process of being inserted into the lumen 120, and the installation is more convenient.

[0043] Further, a plurality of sealing rings 230 are installed on the outer wall of the connecting pipe 200 between the groove 210 and the first end 220. The sealing ring 230 abuts on the cavity wall of the lumen 120 to prevent liquid from leaking out between the connecting pipe 200 and the lumen 120.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0046] In the utility model, unless another definite provision and limitation, the term " install ", " link ", " connect ", " fixed " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication or two element's mutual action relationship. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0047] In the utility model, unless another definite provision and limitation, first feature is " on " or " under " second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through another feature between them. Moreover, first feature " on ", " above " and " on " second feature includes that first feature is directly above and obliquely above second feature, or just indicates that the horizontal height of first feature is higher than second feature. First feature " under ", " below " and " under " second feature includes that first feature is directly below and obliquely below second feature, or just indicates that the horizontal height of first feature is less than second feature.

[0048] In the description of the specification, the description of reference terms " some specific embodiments " and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0049] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A cannula connector, characterized in that, include: The main body (100) is provided with a flow channel (110), a cavity (120) and a plug-in part (130). The cavity (120) is connected to the flow channel (110) and the cavity (120) passes through the plug-in part (130). A connector (200) has a groove (210) on its outer wall along the circumference. The connector (200) can be inserted into the cavity (120) and communicate with the flow channel (110). Locking members (300), two of which are slidably mounted in the insertion portion (130), each of which has a snap-fit ​​portion (310) defining a fitting space (400) between the two snap-fit ​​portions (310) that expands or contracts as the two locking members (300) move relative to each other, the fitting space (400) being located on the insertion path of the connecting pipe (200) relative to the lumen (120), the fitting space (400) being configured such that when it contracts, the snap-fit ​​portion (310) can snap into the groove (210) and when it expands, the snap-fit ​​portion (310) can disengage from the groove (210). An elastic element (500) is installed between the main body (100) and each of the locking elements (300), and the elastic element (500) applies an elastic force to the locking element (300) to cause the sleeve space (400) to tend to shrink.

2. The insertion connector according to claim 1, characterized in that: The latching portion (310) has an arc-shaped latching surface (311), and the latching surfaces (311) of the two latching portions (310) are arranged facing each other, defining the socket space (400) between the two latching surfaces (311).

3. The insertion connector according to claim 1 or 2, characterized in that: The moving direction of the lock (300) relative to the main body (100) is the first direction. The lock (300) also includes cantilever (320) disposed on both sides of the latching part (310) and extending in the same direction along the first direction. Slide groove (140) is provided on the inner walls of both sides of the plugging part (130) along the first direction. The cantilever (320) is paired and slidably engaged in the slide groove (140).

4. The insertion connector according to claim 3, characterized in that: The direction in which the connecting pipe (200) is inserted into the cavity (120) is the second direction. The sliding groove (140) includes a first sliding groove (141) and a second sliding groove (142). The inner walls on both sides of the insertion part (130) are provided with the first sliding groove (141) and the second sliding groove (142) distributed along the second direction. The cantilever (320) on both sides of one of the locking members (300) is slidably connected in the first sliding groove (141) on both sides, and the cantilever (320) on both sides of the other locking member (300) is slidably connected in the second sliding groove (142) on both sides. The cantilever (320) of the two locking members (300) are staggered in the first direction.

5. The insertion connector according to claim 4, characterized in that: The snap-fit ​​part (310) is a semi-cylindrical structure with a radial cross-section of semi-circular ring. The axial direction of the snap-fit ​​part (310) is consistent with the direction in which the pipe (200) is inserted into the flow channel (110). The two snap-fit ​​parts (310) are flush at both ends in the second direction.

6. The insertion connector according to claim 3, characterized in that: The cantilever (320) has a hook (321) at one end away from the locking part (310). The hook (321) is located outside the slide groove (140) along the first direction. When the locking member (300) moves to the outside of the insertion part (130), the two locking parts (310) move closer to each other and move until the hook (321) abuts against the outer end of the slide groove (140).

7. The insertion connector according to claim 6, characterized in that: A first limiting platform (330) is provided on the opposite side of the two cantilever (320) on the same locking member (300), and a second limiting platform (340) is provided on both sides of the locking part (310). When the locking member (300) moves inward toward the insertion part (130), the two locking parts (310) can move away from each other until the first limiting platform (330) on one of the locking members (300) and the second limiting platform (340) on the other locking member (300) abut against each other.

8. The insertion connector according to claim 1, characterized in that: The connector (200) has a first end (220) and is inserted into the cavity (120) from the first end (220). The circumferential outer wall of the first end (220) is configured as a tapered guide surface (221), and the outer diameter of the tapered guide surface (221) gradually decreases from the cavity (120) toward the flow channel (110).

9. The insertion connector according to claim 8, characterized in that: A plurality of sealing rings (230) are installed on the outer wall of the connecting pipe (200) located between the groove (210) and the first end (220), and the sealing rings (230) abut against the cavity wall of the tube (120).

10. A water tank, characterized in that: Includes the cannula connector as described in any one of claims 1 to 9.

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