Quick installation joint for water outlet device and installation method

Abstract

A kind of water outlet device quick installation joint and installation method, including a shell, snap ring, spring and a limit joint;The upper portion of the inner cavity of the shell forms a guide passage;The limit joint is provided with a snap ring limit slot upward, at least including a snap ring buckle position in the snap ring limit slot;The lower part of the snap ring is clamped in the snap ring limit slot, and the upper part of the snap ring is in the guide passage and is buckled in the arc-shaped groove along the guide passage;A spring is provided between the card module and the end face of the joint, when the lower part of the snap ring is elastically buckled in the snap ring buckle position, the spring is in compressed state;The present application utilizes the movement and positioning of snap ring in snap ring limit slot, further drives the elastic buckle at the bottom of limit joint to switch inside or outside the shell, to realize the holding and loosening of extension joint of water outlet device;The scheme is simple in structure, accurate in positioning, and the process of installation and disassembly can be completed quickly, suitable for many application scenarios.

Description

Technical Field

[0001] This invention relates to the field of sanitary ware, and in particular to a quick-installation connector and installation method for a water outlet device. Background Technology

[0002] Currently, the overhead shower and water outlet arm of most shower systems on the market are connected by threads. When installing or replacing them, you need to first align the water outlet arm, rotate the overhead shower, and then tighten it with a wrench. During the operation, since the overhead shower is generally quite high, people need to stand on a ladder to operate it. The threaded connection process is laborious and time-consuming, increasing the risk. At the same time, some overhead shower products have a large structure, making the installation process even more difficult. Summary of the Invention

[0003] The present invention aims to provide a quick-installation connector and installation method for a water outlet device that is quick, easy, and robust.

[0004] To achieve the above objectives, the present invention provides a quick-install connector for a water outlet device, characterized in that it includes a housing, a retaining ring, a spring, and a limiting connector;

[0005] The outer shell has an inner cavity, and a locking module is provided on the upper part of the inner cavity. The locking module includes at least one abutting rib and at least one guide wall. The upper end face of the guide wall is provided with at least one arc-shaped groove, and a guide passage is formed between the abutting rib and the upper end face of the guide wall.

[0006] The limiting joint is sealed in the lower part of the inner cavity and can move up and down under force. The limiting joint includes a water flow path that is open up and down, several outwardly expanding elastic buckles that can be elastically retracted at the bottom, and a joint end face. A retaining ring limiting groove is provided at the joint end face extending upward. The retaining ring limiting groove includes at least one retaining ring fastening position.

[0007] The lower part of the retaining ring is engaged in the retaining ring limiting groove, and the upper part of the retaining ring is in the guide passage and fastened to the arc-shaped groove along the guide passage.

[0008] A spring is provided between the locking module and the connector end face. When the lower part of the retaining ring is elastically locked in the retaining ring fastening position, the spring is in a compressed state.

[0009] During the upward movement of the limiting joint under force, there is at least one position state A. In position state A, the lower part of the retaining ring is engaged in the retaining ring fastening position of the retaining ring limiting groove. At this time, the elastic buckle at the bottom of the limiting joint is tightened inward within the inner cavity of the outer shell. When the retaining ring leaves the retaining ring fastening position, the limiting joint is moved downward by the spring restoring force, and there is at least one position state B. The elastic buckle at the bottom of the limiting joint extends downward outside the inner cavity and expands outward.

[0010] The outer wall of the limiting joint is provided with at least one longitudinal groove, and a limiting structure is fixed to the outer shell and abuts against the longitudinal groove of the outer wall of the limiting joint. The range of movement of the limiting joint in the inner cavity of the outer shell is limited to the range of movement of the limiting structure in the longitudinal groove. Furthermore, in position state B, the limiting structure is located at the upper end of the longitudinal groove.

[0011] Furthermore, the lower part of the retaining ring is provided with a break, and the top of the retaining ring limiting groove is provided with a narrow beam. The narrow beam is the structural position with the smallest thickness at the outer edge of the retaining ring limiting groove. The retaining ring passes through the narrow beam through the break, thereby passing through and being locked in the retaining ring limiting groove.

[0012] Furthermore, the retractable outward-expanding elastic buckle at the bottom of the limiting connector specifically comprises several outward-expanding elastic buckle legs on the bottom surface of the limiting connector along its outer periphery, and the outer end of each buckle leg is further provided with an inward-grabbing claw, and the buckle leg can be retracted inward under force.

[0013] Furthermore, the locking module includes a top abutment rib and two longitudinally arranged guide walls. The two guide walls are arranged in parallel, and each has an arc-shaped groove at a corresponding position on its upper end face. The top abutment rib is arranged in parallel and slightly above the middle of the two guide walls. A guide passage is formed between the top abutment rib and the upper end face of the two guide walls. The upper part of the locking ring is in the guide passage and simultaneously engages with the left and right arc-shaped grooves along the guide passage.

[0014] Furthermore, the limiting structure is a limiting screw, which is fixed in a screw hole on the outer shell wall and abuts against the longitudinal groove on the outer wall of the limiting connector to ensure that the range of vertical movement of the limiting connector in the inner cavity of the outer shell is limited to the range of movement of the end of the limiting screw in the longitudinal groove.

[0015] Furthermore, the retaining ring limiting groove extending upward at the end face of the limiting joint has an outer edge thickness greater than the break at the bottom of the retaining ring, except for the narrow beam portion; and the retaining ring limiting groove has a retaining ring fastening block with a thickness greater than the break at the retaining ring in the middle, and the bottom of the retaining ring fastening block has an inner arc-shaped guide groove, which is the retaining ring fastening position.

[0016] Furthermore, the inner wall of the outer edge of the retaining ring limiting groove is designed as a heart shape with the pointed end facing upwards. The retaining ring fastening block in the middle is also designed as a heart shape facing the same direction. A heart-shaped limiting track is formed around the retaining ring fastening block. The pointed end of the limiting track is divided into a narrow beam part. A pointed convex rail is formed at the bottom of the inner wall of the outer edge. The pointed convex rail is directly opposite the inner arc-shaped guide groove of the retaining ring fastening block. This facilitates the lower part of the retaining ring to be directly inserted into the inner arc-shaped guide groove of the retaining ring fastening block along the pointed convex rail when the limiting joint moves upwards, so as to quickly reach position state A and ensure that the external water outlet device can be quickly and accurately positioned.

[0017] Furthermore, the upper part of the inner cavity of the outer shell has a ball valve receiving cavity, and the outer wall of the upper part of the outer shell is provided with external threads for screwing in an external water pipe.

[0018] Furthermore, the positioning module further includes an annular retaining wall around the outer edge. The top abutment rib and the guide retaining wall are both set on the annular retaining wall. An annular gap is provided between the annular retaining wall and the inner cavity wall of the outer shell. The spring is matched with the size of the annular gap, and the upper part of the spring is placed in the annular gap, which effectively ensures the stability of the spring position and provides a good positioning effect for the spring.

[0019] A method for quickly installing a water outlet device includes the following steps:

[0020] Step 1: The quick-install connector of the water outlet device described above is initially in position B; at this time, insert the second ball connector on the water outlet device into the bottom of the limiting connector. The second ball connector on the water outlet device includes an outwardly extending extension connector, and the outer wall of the extension connector is provided with a reduced diameter section.

[0021] Step 2: As the extension connector is inserted into the limiting connector, the limiting connector moves upward under force, while simultaneously compressing the spring. The lower break of the retaining ring descends from the narrow beam along the retaining ring limiting groove to the lowest end of the retaining ring limiting groove. The water outlet device is released, and the compressed spring returns outward, causing the lower part of the retaining ring to be locked in the retaining ring fastening position of the retaining ring limiting groove. The elastic buckle at the bottom of the limiting connector tightens inward into the inner cavity of the outer shell, and is in position A.

[0022] Step 3: While in position A, the elastic buckle is tightened in the inner cavity of the outer shell. The elastic buckle clamps the reduced diameter part of the extension joint of the water outlet device inward, thus realizing the connection between the water outlet device and the external water pipe.

[0023] This patent utilizes a reasonable structural design, particularly a well-designed structure, to move and position the retaining ring within the retaining ring limiting groove, thereby achieving an open or closed state. This further actuates the elastic buckle at the bottom of the limiting connector, switching between inside and outside the housing, to tighten and loosen the extension connector of the water outlet device. This enables rapid installation and disassembly. The solution is simple in structure, accurate in positioning, and allows for quick installation and disassembly, making it suitable for many application scenarios. Attached Figure Description

[0024] Figure 1 This is an exploded view of an embodiment of the present invention;

[0025] Figure 2 This is a three-dimensional schematic diagram of the outer shell according to an embodiment of the present invention;

[0026] Figure 3 ,4 This is a schematic cross-sectional view of the outer shell according to an embodiment of the present invention;

[0027] Figure 5 This is a three-dimensional cross-sectional view of position state B in an embodiment of the present invention;

[0028] Figure 6 This is a partially enlarged schematic diagram of the retaining ring limiting groove in position state B of this embodiment of the invention;

[0029] Figure 7 This is a three-dimensional cross-sectional view of position state C in an embodiment of the present invention;

[0030] Figure 8 This is a partially enlarged schematic diagram of the retaining ring limiting groove in position state C according to an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the assembly process according to an embodiment of the present invention;

[0032] Figure 10 This is an assembly diagram of an embodiment of the present invention. Detailed Implementation

[0033] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0034] like Figures 1-10 As shown, a water outlet device mounting connector includes a housing 1, a retaining ring 2, a spring 3, and a limiting connector 4.

[0035] The outer shell 1 has an inner cavity 11, and a locking module 12 is provided on the upper part of the inner cavity 11, such as... Figures 3-4 As shown, in this embodiment, the locking module 12 includes a top abutment rib 121 and two longitudinally arranged guide walls 122. The two guide walls 122 are arranged in parallel, and each guide wall 122 has an arc-shaped groove 123 at a corresponding position on its upper end face 1221. The top abutment rib 121 is arranged in parallel slightly above the middle of the two guide walls 122. A guide passage 124 is formed between the top abutment rib 121 and the upper end face 1221 of the two guide walls 122. The upper part of the locking ring 2 is in the guide passage 124 and is simultaneously fastened to the left and right arc-shaped grooves 123 along the guide passage 124.

[0036] The limiting joint 4 is sealed in the lower part of the inner cavity 11 and can move up and down under force. The limiting joint 4 achieves sealing with the inner wall of the inner cavity 11 through the sealing groove 47 on its outer wall and the first sealing ring 48. The limiting joint 4 includes a water flow path 41 that is open up and down, several outwardly expanding elastic buckles 42 that can be elastically retracted at the bottom, and a joint end face 43. A retaining ring limiting groove 44 is provided extending upward at the joint end face 43. The retaining ring limiting groove 44 includes at least one retaining ring fastening position.

[0037] The lower part of the retaining ring 2 is engaged in the retaining ring limiting groove 44, and the upper part of the retaining ring 2 is engaged in the arc-shaped groove 123 along the guide passage 124. In this embodiment, the retaining ring 2 is square, and the lower part of the retaining ring 2 is provided with a break 21. The top of the retaining ring limiting groove 44 is provided with a narrow beam 441. The narrow beam 441 is the structural position with the smallest thickness at the outer edge of the retaining ring limiting groove 44. The retaining ring 2 passes through the narrow beam 441 through the break 21, thereby passing through and being engaged in the retaining ring limiting groove 44.

[0038] In this embodiment, the retractable outward-expanding elastic buckle 42 at the bottom of the limiting connector 4 is specifically provided as follows: a plurality of outwardly expanding elastic buckle legs 421 are provided on the bottom surface of the limiting connector 4 along its outer periphery, and the outer end of the buckle legs 421 is further provided with inwardly gripping claws 422, and the buckle legs 421 can be retracted inward under force.

[0039] In this embodiment, the retaining ring limiting groove 44 extending upward at the end face 43 of the connector has an outer edge thickness greater than the break 21 at the bottom of the retaining ring 2, except for the narrow beam 441 part; and the retaining ring limiting groove 44 has a retaining ring fastening block 444 with a thickness greater than the break 21 of the retaining ring 2 in the middle part, and the retaining ring fastening block 444 has an inner arc-shaped guide groove 445 at the bottom, which is the retaining ring fastening position. The inner wall of the outer edge of the retaining ring limiting groove 44 is further designed as a heart shape with the tip pointing upwards. The retaining ring fastening block 444 in the middle is also designed as a heart shape in the same direction. A heart-shaped limiting track 442 is formed around the retaining ring fastening block 444. The heart-shaped tip of the limiting track 442 is divided into a narrow beam 441 part. A pointed convex rail 443 is formed at the bottom of the inner wall of the outer edge. The pointed convex rail 443 is directly opposite the inner arc-shaped guide groove 445 of the retaining ring fastening block 444. This facilitates the lower part of the retaining ring 2 to be directly inserted into the inner arc-shaped guide groove 445 of the retaining ring fastening block 444 along the pointed convex rail 443 when the limiting connector 4 moves upwards, so as to quickly reach position state A and ensure that the external water outlet device can be quickly and accurately positioned.

[0040] A spring 3 is provided between the positioning module 12 and the connector end face 43. When the lower part of the retaining ring 2 is elastically fastened to the retaining ring fastening position, the spring 3 is in a compressed state. The positioning module 12 further includes an annular retaining wall 125 around the outer edge. The top abutment rib 121 and the guide retaining wall 122 are both set on the annular retaining wall 125. An annular gap 126 is provided between the annular retaining wall 125 and the inner cavity 11 wall of the outer shell 1. The spring 3 is matched with the size of the annular gap 126. The upper part of the spring 3 is placed in the annular gap 126, which effectively ensures the stability of the position of the spring 3 and plays a good positioning role for the spring 3.

[0041] During the upward movement of the limiting joint 4 under force, there is at least one position state A. In position state A, the lower part of the retaining ring 2 is engaged in the retaining ring fastening position of the retaining ring limiting groove 44. At this time, the elastic buckle 42 at the bottom of the limiting joint 4 tightens inward into the inner cavity 11 of the outer shell 1. Figure 10 As shown;

[0042] When the retaining ring 2 disengages from the retaining ring fastening position, the limiting joint 4 moves downward under the restoring force of the spring 3, reaching at least position B. The elastic buckle 42 at the bottom of the limiting joint 4 extends downward outside the inner cavity 11 and expands outward, as shown below. Figure 5 , 6 As shown, in this embodiment, the position of the lower part of the retaining ring 2 being just locked in the retaining ring limiting groove 44 by the narrow beam 441 is position B. In this state, the elastic buckle 42 relaxes and expands outward.

[0043] In this embodiment, a position state C is also included, such as Figure 7 , 8 As shown, when the water outlet device is installed from position B, the limiting joint 4 moves upward under force during the installation process. As the limiting joint 4 continues to move upward, the lower break 21 of the retaining ring 2 moves downward from the narrow beam 441 along the limiting track 442, first reaching... Figure 7 , 8 The position shown is that the lower part of the retaining ring 2 is located at the bottom of the heart-shaped limiting track 442, which is position state C;

[0044] During the upward movement of the limiting joint 4 under force, there is at least one position state A. In position state A, the lower part of the retaining ring 2 is engaged in the retaining ring fastening position of the retaining ring limiting groove 44. At this time, the elastic buckle 42 at the bottom of the limiting joint 4 tightens inward into the inner cavity 11 of the outer shell 1. Figure 10 As shown;

[0045] The outer wall of the limiting connector 4 is provided with at least one longitudinal groove 45. A limiting structure is fixed to the outer shell 1 and abuts against the longitudinal groove 45 on the outer wall of the limiting connector 4. The range of movement of the limiting connector 4 in the inner cavity 11 of the outer shell 1 is limited to the range of movement of the limiting structure within the longitudinal groove 45. Furthermore, in position state B, the limiting structure is located at the upper end 451 of the longitudinal groove 45. In this embodiment, the limiting structure is a limiting screw 46. The limiting screw 46 is fixed in a screw hole 15 on the shell wall of the outer shell 1 and abuts inward against the longitudinal groove 45 on the outer wall of the limiting connector 4 to ensure that the range of movement of the limiting connector 4 in the inner cavity 11 of the outer shell 1 is limited to the range of movement of the end of the limiting screw within the longitudinal groove 45.

[0046] The upper part of the inner cavity 11 of the outer casing 1 further has a ball valve receiving cavity 13, and the outer wall of the upper part of the outer casing 1 is provided with external threads 14, which are used to screw on the external water pipe 5 in conjunction with the valve cap 131. Figure 9 As shown, the end of the external water pipe 5 is provided with a first ball joint 51, which is fixed in the ball valve accommodating cavity 13 by the valve cap 131 to realize external connection.

[0047] like Figures 9-10 As shown, a quick installation method for a water outlet device (top spray 6) is described in the following embodiment:

[0048] Step 1: The initial state of the water outlet device installation connector is position B; at this time, the second spherical connector 61 on the water outlet device (top spray 6) is inserted into the bottom of the limiting connector 4 of the water outlet device installation connector. In this embodiment, the second spherical connector 61 on the water outlet device includes an outwardly extending extension connector 611. The outer wall of the extension connector 611 is provided with a reduced diameter portion 612. The extension connector 611 is sealed by the second sealing ring 613 when inserted into the limiting connector 4 (in this embodiment, the extension connector 611 is provided with a sealing groove 47 for placing the second sealing ring 613). In most water outlet devices, there is an outwardly connecting connector portion, which is provided with a reduced diameter portion 612.

[0049] Step Two: As the extension connector 611 is inserted into the limiting connector 4, the limiting connector 4 moves upward under force, simultaneously compressing the spring 3. The lower break 21 of the retaining ring 2 descends from the narrow beam 441 along the limiting track 442, until it reaches... Figure 7 , 8 Position state C is shown, meaning that the lower part of the retaining ring 2 is at the bottom of the heart-shaped limiting track 442, which means that the limiting joint 4 has moved up to the highest position; when the top spray 6 is released, the compressed spring 3 returns outward, so that the lower part of the retaining ring 2 is directly inserted into the inner arc-shaped guide groove 445 of the retaining ring fastening block 444 along the tip of the limiting track 442 convex rail 443, and quickly reaches position state A;

[0050] Step 3: In position A, the lower part of the retaining ring 2 is engaged in the retaining ring fastening position of the retaining ring limiting groove 44. At this time, the elastic buckle 42 at the bottom of the limiting connector 4 is tightened inward into the inner cavity 11 of the outer shell 1, and at the same time, it clamps the reduced diameter portion 612 of the outer wall of the extension connector 611 of the top spray 6. Figure 10 As shown, while clamping the top spray 6, the elastic buckle 42 is tightened into the inner cavity 11 of the outer shell 1, thus forming a stable connection effect and realizing a fast and high-strength connection function.

[0051] During disassembly, simply press the top spray 6 upwards again, and the lower end of the retaining ring 2 will slide outwards in the inner arc-shaped guide groove 445, disengage from the inner arc-shaped guide groove 445, and enter the limiting track 442. Under the action of the internal spring 3, the limiting joint 4 is pushed out of the inner cavity 11 of the outer shell 1, and its elastic claw 422 opens in turn, so that the top spray 6 can be removed.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A quick-install connector for a water outlet device, characterized in that: It includes a housing, a retaining ring, a spring, and a limiting connector; The outer shell has an inner cavity, and a locking module is provided on the upper part of the inner cavity. The locking module includes at least one abutting rib and at least one guide wall. The upper end face of the guide wall is provided with at least one arc-shaped groove, and a guide passage is formed between the abutting rib and the upper end face of the guide wall. The limiting joint is sealed in the lower part of the inner cavity and can move up and down under force. The limiting joint includes a water flow path that is open up and down, several outwardly expanding elastic buckles that can be elastically retracted at the bottom, and a joint end face. A retaining ring limiting groove is provided at the joint end face extending upward. The retaining ring limiting groove includes at least one retaining ring fastening position. The lower part of the retaining ring is engaged in the retaining ring limiting groove, and the upper part of the retaining ring is in the guide passage and fastened to the arc-shaped groove along the guide passage. A spring is provided between the locking module and the connector end face. When the lower part of the retaining ring is elastically locked in the retaining ring fastening position, the spring is in a compressed state. During the upward movement of the limiting joint under force, there is at least one position state A. In position state A, the lower part of the retaining ring is engaged in the retaining ring fastening position of the retaining ring limiting groove. At this time, the elastic buckle at the bottom of the limiting joint is tightened inward within the inner cavity of the outer shell. When the retaining ring leaves the retaining ring fastening position, the limiting joint is moved downward by the spring restoring force, and there is at least one position state B. The elastic buckle at the bottom of the limiting joint extends downward outside the inner cavity and expands outward. The outer wall of the limiting joint is provided with at least one longitudinal groove, and a limiting structure is fixed to the outer shell and abuts against the longitudinal groove of the outer wall of the limiting joint. The range of movement of the limiting joint in the inner cavity of the outer shell is limited to the range of movement of the limiting structure in the longitudinal groove. Furthermore, in position state B, the limiting structure is located at the upper end of the longitudinal groove. The lower part of the retaining ring has a break, and the top of the retaining ring limiting groove has a narrow beam. The narrow beam is the structural position with the smallest thickness at the outer edge of the retaining ring limiting groove. The retaining ring passes through the narrow beam through the break, thereby passing through and being locked in the retaining ring limiting groove. The retaining ring limiting groove extending upward at the end face of the limiting joint has an outer edge thickness greater than the break at the bottom of the retaining ring, except for the narrow beam portion; and a retaining ring fastening block with a thickness greater than the break at the bottom of the retaining ring is provided in the middle of the retaining ring limiting groove, and an inner arc-shaped guide groove is provided at the bottom of the retaining ring fastening block, which is the retaining ring fastening position. The inner wall of the outer edge of the retaining ring limiting groove is further designed as a heart shape with the pointed end facing upwards. The retaining ring fastening block in the middle is also designed as a heart shape facing the same direction. A heart-shaped limiting track is formed around the retaining ring fastening block. The pointed end of the limiting track is divided into a narrow beam part. A pointed convex rail is formed at the bottom of the inner wall of the outer edge. The pointed convex rail is directly opposite the inner arc-shaped guide groove of the retaining ring fastening block. This facilitates the lower part of the retaining ring to be directly inserted into the inner arc-shaped guide groove of the retaining ring fastening block along the pointed convex rail when the limiting joint moves upwards, so as to quickly reach position state A and ensure that the external water outlet device can be quickly and accurately positioned.

2. The quick-install connector for a water outlet device as described in claim 1, characterized in that: Specifically, the retractable outward-expanding elastic buckle at the bottom of the limiting connector has several outward-expanding elastic buckle legs on its outer periphery along the bottom surface of the limiting connector. The outer end of each buckle leg is further provided with an inward-grabbing claw, and the buckle leg can be retracted inward under force.

3. The quick-install connector for a water outlet device as described in claim 1, characterized in that: The locking module includes a top abutment rib and two longitudinally arranged guide walls. The two guide walls are arranged in parallel, and each has an arc-shaped groove at a corresponding position on its upper end face. The top abutment rib is arranged in parallel and slightly above the middle of the two guide walls. A guide passage is formed between the top abutment rib and the upper end face of the two guide walls. The upper part of the locking ring is in the guide passage and simultaneously engages with the left and right arc-shaped grooves along the guide passage.

4. The quick-install connector for a water outlet device as described in claim 1, characterized in that: The limiting structure is a limiting screw, which is fixed in a screw hole on the outer shell wall and abuts against the longitudinal groove on the outer wall of the limiting connector to ensure that the range of vertical movement of the limiting connector in the inner cavity of the outer shell is limited to the range of movement of the end of the limiting screw in the longitudinal groove.

5. The quick-install connector for a water outlet device as described in claim 1, characterized in that: The upper part of the inner cavity of the outer shell further has a ball valve receiving cavity, and the outer wall of the upper part of the outer shell is provided with external threads for screwing in an external water pipe.

6. The quick-install connector for a water outlet device as described in claim 1, characterized in that: The positioning module further includes an annular retaining wall around its outer edge. The top rib and the guide retaining wall are both set on the annular retaining wall. An annular gap is provided between the annular retaining wall and the inner cavity wall of the outer shell. The spring is matched with the size of the annular gap, and the upper part of the spring is placed in the annular gap, which effectively ensures the stability of the spring position and provides a good positioning effect for the spring.

7. A method for quickly installing a water outlet device, characterized in that: Step 1: The quick-install connector of the water outlet device as described in any one of claims 1 to 6 is initially in position B; at this time, the second spherical connector on the water outlet device is inserted into the bottom of the limiting connector, wherein the second spherical connector on the water outlet device includes an outwardly extending extension connector, and the outer wall of the extension connector is provided with a reduced diameter portion; Step 2: As the extension connector is inserted into the limiting connector, the limiting connector moves upward under force, while simultaneously compressing the spring. The lower break of the retaining ring descends from the narrow beam along the retaining ring limiting groove to the lowest end of the retaining ring limiting groove. The water outlet device is released, and the compressed spring returns outward, causing the lower part of the retaining ring to be locked in the retaining ring fastening position of the retaining ring limiting groove. The elastic buckle at the bottom of the limiting connector tightens inward into the inner cavity of the outer shell, and is in position A. Step 3: While in position A, the elastic buckle is tightened in the inner cavity of the outer shell. The elastic buckle clamps the reduced diameter part of the extension joint of the water outlet device inward, thus realizing the connection between the water outlet device and the external water pipe.

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