Swivel joint for water pipes and spray head with swivel joint

Abstract

The present application provides a rotating joint for water pipe and a spray head with the rotating joint, wherein the rotating joint comprises an outer joint, an inner joint and a pivot assembly, wherein the inner joint comprises an inner rotating joint, an inner plug joint and a rotating shaft between the inner rotating joint and the inner plug joint, the inner rotating joint of the inner joint is kept inside the outer joint; wherein the at least one pivot assembly is pivotably arranged between the rotating shaft and the outer joint to allow the inner joint and the outer joint to relatively rotate.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more particularly to a rotary joint for water pipes and a nozzle with a rotary joint. Background Technology

[0002] Pipe fittings are common and frequently used in daily life, primarily for connecting various water pipes, such as shower heads in bathrooms, gardens, and industrial applications, or for extending and connecting two water pipes. Pipe fittings connect water pipes to shower heads and provide a seal and leak-proof performance for the connection. In current technology, pipe connections or transitions typically use more than one accessory to connect the pipes, thus requiring repeated installation and removal of accessories. Water pipe accessories include nozzles, spray guns, sprinklers, pressure washers, extension tubes, rods, and various other devices.

[0003] Water pipe joints not only need to achieve a sealed connection, but also need to prevent some problems that may be encountered during use. For example, soft water pipes may bend and rotate during use, or the nozzles or spray guns connected to the other end of the water pipe joint may constantly switch states during use. This requires the water pipe joint to not only maintain good connection performance, but also to maintain a relatively good sealing relationship between the water pipe and the nozzles or spray guns connected to the other end during rotation.

[0004] While existing water pipe connectors, as key components connecting water pipes and nozzles or spray guns, can maintain connection and seal, they struggle to keep the two ends rotating relative to each other or synchronously when relative rotation occurs, such as when rotating the water pipe or the nozzle or spray gun. This can lead to tangling of the water pipe or nozzle during use, thus affecting the user experience.

[0005] In existing technologies, coiling a long water hose by pulling it or the nozzle to store it often puts stress on the user holding the nozzle or nozzle, as the hose needs to be uncoiled when pulled. If the user does not stop pulling and rotating the hose and nozzle to uncoil the hose, this operation causes the hose to wobble and frequently twist. This requires the user to constantly rotate the hose or nozzle to uncoil or coil the hose. Therefore, there is a need for a device that allows for easier coiling and uncoiling of stored hoses, as well as easier installation from the hose.

[0006] Existing water pipe fittings typically separate the faucet / fitting part from the water pipe part, sealing them with O-rings. However, this type of fitting, while able to rotate freely when no water is flowing, becomes stuck once water is introduced and pressure increases. Increased friction prevents further smooth rotation.

[0007] Hose clamps are known in the art, for example, as described in U.S. Patent Application No. 5333650, where handles provide a more ergonomic shape for the user to grip when using hoses. Furthermore, clamps can increase the stiffness and strength of the hose ends. A mounting swivel is a freely rotating connector, but once fully tightened at both ends or at the water source, it becomes rigid and immobile. The active swivel joint / handle disclosed in this application allows the installed sprinkler head to rotate during use, independently of the connected hose. Since the hose on a non-rotating device would prevent the user from rotating, additional torque stress is applied to the user to use the hose and connected sprinkler head without the swivel joint / handle.

[0008] Additionally, U.S. Patent Application No. 14614486 discloses another free-rotating hose connection device, which includes a free-rotating joint at the end of the hose, a rigid sleeve surrounding a portion of the hose, wherein the rigid sleeve is freely rotatable together with a connector surrounding the end of the hose. The connector includes a first portion and a second portion, wherein the first portion includes a circularly threaded end for attachment to an accessory or other hose, wherein the threaded end is connected to a first base of a larger diameter. The first and second portions of the coupling are connected by a free-rotating connector that allows each portion of the coupling to freely rotate relative to each other about a longitudinal axis passing through it. The free-rotating connection is established by a track integrated with the first or second connecting portion. The track receives one or more ball bearings inserted through an inlet of the first connecting portion. The inlet is then sealed using a pin, screw, or other means.

[0009] While the hose connection device disclosed in this application overcomes the problem of water pipes and connectors tangling due to rotation, it still has at least one of the following drawbacks: First, the ball bearings are installed in the two connection parts through a small hole, which is difficult and inefficient. Second, the ball bearings inevitably collide and obstruct each other in the middle of the two connection parts, which will cause rotation failure and thus affect the user experience. Third, since the ball bearings are installed from the outside in the middle of the two connection parts, once the ball bearings are in, they are difficult to remove. This connection device cannot be disassembled and repaired, and its service life is very limited. Summary of the Invention

[0010] A key advantage of this invention is that it provides a swivel joint for water pipes and a nozzle with the swivel joint, wherein the swivel joint can connect to water pipes and nozzles, spray nozzles or other devices, and allows water pipes and nozzles connected to both ends of the swivel joint to rotate relative to each other, preventing tangling.

[0011] Another advantage of the present invention is that it provides a rotary joint for water pipes and a nozzle with the rotary joint, wherein the rotary joint includes an inner joint, an outer joint, and a pivoting assembly disposed between the inner joint and the outer joint, the pivoting assembly allowing the inner joint and the outer joint to rotate freely relative to each other, which is convenient for user use.

[0012] Another advantage of the present invention is that it provides a rotary joint for water pipes and a nozzle with the rotary joint, wherein the inner joint, the outer joint, and the pivot assembly disposed between the inner joint and the outer joint of the rotary joint are detachable, facilitating maintenance and replacement.

[0013] Another advantage of the present invention is that it provides a rotary joint for water pipes and a nozzle with the rotary joint, wherein the assembly and manufacturing process of the rotary joint is simple, improving production efficiency and product yield.

[0014] Another advantage of the present invention is that it provides a rotary joint for water pipes and a nozzle with the rotary joint, wherein the pivoting assembly includes a planar bearing, wherein the planar bearing is supported between the inner joint and the outer joint, allowing the inner joint and the outer joint to rotate relative to each other, thereby simplifying the manufacturing process of the rotary joint.

[0015] Another advantage of the present invention is that it provides a rotary joint for water pipes and a nozzle with a rotary joint, wherein the pivoting assembly includes a magnetic assembly, wherein the magnetic assembly separates the inner joint and the outer joint from each other by the mutual repulsion of like magnetic poles, and allows the inner joint and the outer joint to rotate relative to each other, which helps to simplify the manufacturing process and the overall structure.

[0016] Another advantage of the present invention is that it provides a rotary joint for water pipes, wherein at the end of the inner joint, there is an adjustable gap between the inner joint and the outer joint, which facilitates adjustment of the position of the pivot assembly when the water pressure is high, and prevents blockage or non-rotation due to high pressure.

[0017] According to one aspect of the present invention, a rotary joint for water pipes, which achieves the aforementioned and other objects and advantages, comprises:

[0018] One external connector; An inner connector, wherein the inner connector includes an inner adapter, an inner plug, and an adapter shaft located between the inner adapter and the inner plug, the inner adapter being held inside the outer connector; and A pivoting assembly, wherein the at least one pivoting assembly is pivotally disposed between the adapter shaft and the outer connector to allow the inner connector and the outer connector to rotate relative to each other.

[0019] According to one embodiment of the present invention, the pivoting assembly includes a first track, a second track, and at least one planar bearing disposed between the first track and the second track, wherein the first track and the second track form a bearing chamber for accommodating the planar bearing, and the planar bearing is disposed in the bearing chamber.

[0020] According to one embodiment of the present invention, the inner adapter has an inner mating surface, and the outer adapter has an outer mating surface, wherein the inner mating surface of the inner adapter and the outer mating surface of the outer adapter are directly opposite each other, and the first track of the pivot assembly abuts against the inner mating surface of the inner adapter; the second track abuts against the outer mating surface of the outer adapter.

[0021] According to one embodiment of the present invention, the first track and the second track are arranged at intervals, wherein there is an interval gap between the first track and the second track.

[0022] According to one embodiment of the present invention, the first track and the second track are facing each other, and the first track is provided with an upper groove and the second track is provided with a lower groove, wherein the upper groove of the first track and the lower groove of the second track are facing each other, and the planar bearing is clamped between the upper groove of the first track and the lower groove of the second track.

[0023] According to one embodiment of the present invention, the planar bearing includes a bearing housing and a plurality of balls, wherein the plurality of balls are rotatably disposed in the bearing housing, and wherein each ball is arranged in the bearing housing at equal intervals.

[0024] According to one embodiment of the present invention, the pivoting assembly includes a first magnetic ring and a second magnetic ring, wherein the first magnetic ring and the second magnetic ring are facing each other and the magnetic poles of the opposing surfaces of the first magnetic ring and the second magnetic ring are the same.

[0025] According to one embodiment of the present invention, the first magnetic ring and the second magnetic ring of the pivoting assembly are ring magnets or ring magnets.

[0026] According to one embodiment of the present invention, the pivot assembly, the inner adapter, and the adapter shaft corresponding to the inner side of the pivot assembly are sleeved in a built-in cavity of the outer connector. The outer connector includes an outer adapter and an outer plug integrally extending from the outer adapter along the axial direction of the outer connector channel, wherein the outer connector channel of the outer connector communicates with the built-in cavity of the outer connector.

[0027] According to one embodiment of the present invention, a rotating receiving cavity is formed by the inner adapter, the outer adapter, and the adapter shaft on the inner side of the outer adapter, wherein the pivot assembly is rotatably disposed within the rotating receiving cavity.

[0028] According to one embodiment of the present invention, it further includes at least one waterproof strip, wherein the at least one waterproof strip is disposed between the inner adapter and the outer adapter.

[0029] According to one embodiment of the present invention, the inner adapter is provided with at least one waterproof groove, wherein the at least one waterproof strip is installed in the at least one waterproof groove of the inner adapter.

[0030] According to one embodiment of the present invention, the inner adapter further has an inner adapter end face, wherein the inner adapter end face is formed at the end of the inner adapter, and the outer adapter of the outer adapter includes a non-detaching end and an open end integrally extending from the non-detaching end. The open end of the outer adapter and the inner adapter end face of the inner adapter are on the same side, and the plane where the opening of the open end of the outer adapter is located and the plane where the opening of the inner adapter is located have an adjustment gap in the axial direction.

[0031] According to one embodiment of the present invention, the external plug is further provided with a connecting member and an anti-slip member, wherein the connecting member is implemented as a threaded connector.

[0032] According to one embodiment of the present invention, the connecting member is implemented as an internal thread structure, wherein the connecting member and the anti-slip member are arranged back to back.

[0033] According to one embodiment of the present invention, the connecting member has an external thread structure, and the anti-slip member is formed on the surface of the external plug.

[0034] According to another aspect of this application, this application further provides a spray head, comprising: The nozzle body; and As described in any of the above-described rotary joints, wherein the nozzle body has a water inlet located at the lower end of the nozzle body, the rotary joint is detachably disposed at the lower end of the nozzle body, and the external connector of the rotary joint is connected to the nozzle body through the water inlet.

[0035] The further objects and advantages of the invention will become fully apparent from the following description and accompanying drawings.

[0036] These and other objects, features and advantages of the present invention will become fully apparent from the following detailed description and accompanying drawings. Attached Figure Description

[0037] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. In the drawings, unless otherwise specified, the same reference numerals are used to denote the same parts. Wherein: Figure 1 This is a three-dimensional structural schematic diagram of a rotary joint for water pipes according to a first preferred embodiment of the present invention.

[0038] Figure 2 This is an exploded view of the rotary joint for water pipes according to the first preferred embodiment of the present invention.

[0039] Figure 3 This is a cross-sectional view along the axial direction of the rotary joint for water pipes according to the first preferred embodiment of the present invention.

[0040] Figure 4 This is a three-dimensional structural schematic diagram of a pivoting assembly of the water pipe rotary joint according to the first preferred embodiment of the present invention.

[0041] Figure 5 This is a three-dimensional structural schematic diagram of a rotary joint for water pipes according to a second preferred embodiment of the present invention.

[0042] Figure 6 This is a schematic diagram of another pivot component of a rotary joint for water pipes according to a third preferred embodiment of the present invention.

[0043] Figure 7 This is a schematic diagram of the overall structure of a nozzle according to a fourth preferred embodiment of the present invention. Detailed Implementation

[0044] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0045] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the invention.

[0046] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0047] Refer to the accompanying drawings in this application specification. Figures 1 to 4 As shown, a swivel joint for water pipes according to a first preferred embodiment of this application is described below. The swivel joint for water pipes, hereinafter collectively referred to as a swivel joint, is used for connecting or transferring water pipes to other equipment, such as spray heads, nozzles, spray guns, sprinklers, high-pressure washers, extension tubes, and various other devices. The swivel joint includes an inner joint 10 and an outer joint 20, and at least one pivoting assembly 30 disposed between the inner joint 10 and the outer joint 20, wherein the pivoting assembly 30 is rotatably fitted between the inner joint 10 and the outer joint 20, i.e., the pivoting assembly 30 is fitted outside the inner joint 10 and inside the outer joint 20, to allow the inner joint 10 and the outer joint 20 to rotate relative to each other.

[0048] The inner connector 10 is adapted to be connected to a water pipe, and the outer connector 20 is adapted to be connected to other equipment, such as a nozzle or spray gun. That is, the water pipe can be connected or transferred to other equipment through the inner connector 10 and the outer connector 20.

[0049] The inner connector 10 has an inner connector channel 101, and the outer connector 20 has an outer connector channel 201, wherein the inner connector channel 101 of the inner connector 10 is connected to the outer connector channel 201 of the outer connector 20, and the inner connector 10 and the outer connector 20 of the rotary joint are connected to water pipes or other equipment.

[0050] The inner connector 10 includes an inner adapter 11, an inner plug 12, and a connecting shaft 13 located between the inner adapter 11 and the inner plug 12, wherein the connecting shaft 13 extends integrally from the inner adapter 11 along the axial direction of the inner connector channel 101 to the inner plug 12. The inner adapter 11 of the inner connector 10 can be embedded into the outer connector 20, the inner plug 12 is adapted to connect to a water pipe connector, wherein the connecting shaft 13 is formed between the inner adapter 11 and the inner plug 12 for communicating the inner adapter 11 and the inner plug 12, and the inner adapter 11, the inner plug 12, and the connecting shaft 13 together form the inner connector channel 101. It is understood that in this preferred embodiment of the present application, the inner adapter 11 and the inner plug 12 are respectively located at both ends of the adapter shaft 13, wherein the pivot assembly 30 is disposed on the adapter shaft 13 and supported by the adapter shaft 13.

[0051] The pivot assembly 30 is sleeved on the outside of the adapter shaft 13 of the inner connector 10, and the pivot assembly 30, the inner connector 11, and the corresponding adapter shaft 13 on the inner side of the pivot assembly 30 are sleeved in a built-in cavity 202 of the outer connector 20. The pivot assembly 30 can rotate freely in its circumferential direction within the built-in cavity 202 of the outer connector 20, so as to allow the inner connector 10 and the outer connector 20 to rotate freely in their circumferential directions.

[0052] The external connector 20 includes an external adapter 21 and an external plug 22 integrally extending from the external adapter 21 along the axial direction of the external connector channel 201, wherein the external connector channel 201 of the external connector 20 communicates with the internal cavity 202 of the external connector 20. The internal adapter 11 and the pivot assembly 30 of the internal connector 10 are pivotally disposed in the internal cavity 202 of the external connector 20, and the internal connector channel 101 of the internal connector 10 communicates with the external connector channel 201 of the external connector 20.

[0053] It should be noted that, in this preferred embodiment of the present application, the external adapter 21 of the external connector 20 forms the internal cavity 202 of the external connector 20, the external plug 22 forms the external connector channel 201 of the external connector 20, and the inner diameter of the internal cavity 202 of the external connector 20 is smaller than the inner diameter of the external connector channel 201, so as to allow the internal adapter 11 of the internal connector 10 and the pivot assembly 30 to be inserted from the external connector channel 201 of the external connector 20 into the internal cavity 202 of the external connector 20.

[0054] like Figure 2 and Figure 3 As shown, the inner adapter 11 and the adapter shaft 13 of the inner connector 10 are cylindrical structures, wherein the outer diameter of the inner adapter 11 is larger than the outer diameter of the adapter shaft 13, and the axial length of the inner adapter 11 is smaller than the axial length of the outer adapter 21 of the outer connector 20. Inside the outer adapter 21, a rotating cavity 301 is formed by the inner adapter 11, the outer adapter 21, and the adapter shaft 13. A pivoting assembly 30 is rotatably disposed within the rotating cavity 301, reducing friction between the inner connector 10 and the outer connector 20 caused by rotation.

[0055] The pivot assembly 30 is sleeved on the outside of the adapter shaft 13 of the inner connector 10. The pivot assembly 30 has an inner shaft hole 304 and an outer shaft surface 303, wherein the diameter of the inner shaft hole 304 of the pivot assembly 30 is adapted to the outer shaft dimension of the adapter shaft 13, and the outer diameter of the outer shaft surface 303 of the pivot assembly 30 is adapted to the inner diameter of the outer adapter 21 of the outer connector 20. In short, the pivot assembly 30 is tightly fitted between the adapter shaft 13 and the outer adapter 21.

[0056] The pivot assembly 30 includes a first track 31, a second track 32, and at least one planar bearing 33 disposed between the first track 31 and the second track 32, wherein the first track 31 and the second track 32 form a bearing chamber 302 for accommodating the planar bearing 33, and the planar bearing 33 is disposed within the bearing chamber 302.

[0057] The inner adapter 11 has an inner mating surface 111, and the outer adapter 21 has an outer mating surface 211. The inner mating surface 111 of the inner adapter 11 and the outer mating surface 211 of the outer adapter 21 face each other. The first track 31 of the pivot assembly 30 abuts against the inner mating surface 111 of the inner adapter 11, and the second track 32 abuts against the outer mating surface 211 of the outer adapter 21. It should be noted that in this preferred embodiment of the present application, the first track 31 and the second track 32 are spaced apart, with a gap between them, meaning that the first track 31 and the second track 32 do not contact or connect, thereby reducing collisions or friction between the tracks.

[0058] It is worth mentioning that, in this preferred embodiment of the present application, the first track 31 can rotate synchronously with the inner adapter 11, and the second track 32 can rotate synchronously with the outer adapter 21.

[0059] The planar bearing 33 of the pivot assembly 30 is sandwiched between the first track 31 and the second track 32, and the planar bearing 33 can roll within the bearing chamber 302 to allow the first track 31 and the second track 32 to rotate relative to each other.

[0060] The first track 31 and the second track 32 are oriented opposite each other. The first track 31 has an upper groove 311, and the second track 32 has a lower groove 321. The upper groove 311 of the first track 31 and the lower groove 321 of the second track 32 are oriented opposite each other, and the planar bearing 33 is clamped between the upper groove 311 of the first track 31 and the lower groove 321 of the second track 32. It is worth mentioning that the axial cross-section of the upper groove 311 of the first track 31 and the axial cross-section of the lower groove 321 of the second track 32 are semi-circular or arc-shaped. Therefore, the bearing chamber 302 formed by the upper groove 311 of the first track 31 and the lower groove 321 of the second track 32 is an annular space suitable for the rolling of the planar bearing 33.

[0061] It is understood that, in this preferred embodiment of the present application, the inner mating surface 111 of the inner adapter 11 and the outer mating surface 211 of the outer adapter 21 are spaced apart by the pivoting assembly 30. Therefore, the inner adapter 11 and the outer adapter 21 are not in direct contact in the axial direction of the rotary joint. When the inner adapter 11 and the outer adapter 21 rotate relative to each other, the pivoting assembly 30 will change from sliding friction to rolling friction to reduce friction, thereby facilitating rotation.

[0062] As an example, in this preferred embodiment of the present application, the inner plug 12 of the inner connector 10 is adapted to communicate with a water pipe or a connector for connecting water pipes, and the outer plug 22 of the outer connector 20 is adapted to communicate with a faucet / fitting connector. When the water pipe supplies water to the faucet or shower head through the rotary connector, the water in the water pipe passes through the inner connector channel 101 of the inner connector 11 and the outer connector channel 201 of the outer connector 21. Under the action of water pressure, the first track 31 and the second track 32 of the pivot assembly 30 clamp the planar bearing 33, and the first track 31 is attached to the inner mating surface 111 of the inner connector 11, and the second track 32 is attached to the outer mating surface 211 of the outer connector 21. When the water pipe and the faucet rotate relative to each other, the outer connector 20 and the inner connector 10 rotate relative to each other under the action of force. The first track 31 and the second track 32 of the pivot assembly 30 rotate under the rolling action of the plane bearing 33 to reduce the friction generated during the rotation.

[0063] like Figure 2 and Figure 4 As shown, the planar bearing 33 of the pivot assembly 30 is disposed between the first track 31 and the second track 32. The planar bearing 33 includes a bearing frame 331 and a plurality of balls 332. The plurality of balls 332 are rotatably disposed on the bearing frame 331. The balls 332 are arranged at equal intervals on the bearing frame 331 to prevent the balls 332 from colliding with each other on the track components.

[0064] like Figure 2 and Figure 3 As shown, the outer wall of the inner adapter 11 is tightly abutted against the inner wall 212 of the outer adapter 21, that is, the outer adapter 21 restricts the shaking of the inner adapter 11. In short, in this preferred embodiment of the present application, the inner adapter 11 and the outer adapter 21 have a seamless fit at their circumferential contact surfaces, forming a sealed structure to prevent water penetration. The rotary joint further includes at least one waterproof strip 40, wherein the at least one waterproof strip 40 is disposed between the inner adapter 11 and the outer adapter 21. It is worth mentioning that in this preferred embodiment of the present application, the waterproof strip 40 is implemented as a waterproof element made of rubber, thereby improving the seepage prevention performance of the rotary joint. The inner adapter 11 is provided with at least one waterproof groove 113, wherein the at least one waterproof strip 40 is installed in the at least one waterproof groove 113 of the inner adapter 11.

[0065] The inner adapter 11 of the inner connector 10 further has an inner adapter end face 114 and an inner adapter opening 115 located on the inner adapter end face 114, wherein the inner adapter end face 114 and the inner adapter opening 115 are formed at the end of the inner adapter 11, and the inner adapter opening 115 faces the outer connector channel 201 of the outer connector 20.

[0066] The adapter shaft 13 of the inner connector 10 extends integrally from the inner plug 12 of the inner adapter 11, wherein the pivot assembly 30 is fitted onto the adapter shaft 13. The adapter shaft 13 further includes an adapter end 131 and a protruding end 132 integrally extending from the adapter end 131, wherein the adapter end 131 of the adapter shaft 13 integrally extends from the inner adapter 11 and is held within the outer adapter 21 of the outer connector 20. The protruding end 132 of the adapter shaft 13 integrally extends outward from the adapter end 131 to the inner plug 12, providing installation length for the water pipe.

[0067] It is worth mentioning that, in this preferred embodiment of the present application, the pivot assembly 30 is sleeved on the outside of the adapter end 131 of the adapter shaft 13, wherein the axial length of the pivot assembly 30 is less than or equal to the axial length of the adapter end 131. The inner plug 12 of the inner connector 10 is adapted to connect to a water pipe or a water pipe connector, wherein the inner plug 12 has an inverted conical structure to prevent the water pipe from slipping off the inner plug 12.

[0068] In another optional embodiment of this application, the inner connector 10 is further provided with a connecting protrusion or a barb-shaped anti-detachment structure, wherein the connecting protrusion or the barb-shaped anti-detachment structure is formed on the outer surface of the inner plug 12 or the adapter shaft 13 of the inner connector 10.

[0069] The outer adapter 21 of the outer connector 20 includes a non-detachment end 213 and an open end 214 integrally extending from the non-detachment end 213, wherein the outer adapter 21 is a hollow cylindrical connector, and the inner adapter 11 of the inner connector 10 is constrained within the built-in cavity 202 by the non-detachment end 213 of the outer adapter 21.

[0070] The outer adapter 21 has a detachment end 213 with a detachment end opening 2130 and an open end 214 with an open end opening 2140. The size of the detachment end opening 2130 of the detachment end 213 is smaller than the size of the pivot assembly 30. That is, the pivot assembly 30 and the inner adapter 11 are restricted within the built-in cavity 202 of the outer adapter 20 by the detachment end 213 of the outer adapter 21.

[0071] The open end 214 of the outer adapter 21 is on the same side as the inner adapter end face 114 of the inner adapter 11, and the plane containing the open end opening 2140 of the outer adapter 21 and the plane containing the inner adapter opening 115 have an adjustment gap 210 in the axial direction. That is, the open end 214 of the outer adapter 21 is outside the inner adapter end face 114 of the inner adapter 11, and the plane containing the open end opening 2140 of the outer adapter 21 is higher than the plane containing the inner adapter opening 115. The inner adapter 11 is held inside the outer adapter 21 of the outer adapter 20, and when the outer plug 22 of the outer adapter 20 is connected or installed with other equipment, the inner adapter 11 and the pivot assembly 30 can move within a small range in the axial direction within the built-in cavity 202 of the outer adapter 20 to avoid the pivot assembly 30 being subjected to excessive pressure. In short, in this preferred embodiment of the present application, the adjustment gap 210 is the gap formed by the height difference between the end of the open end 214 of the outer adapter 21 and the end face 114 of the inner adapter 11.

[0072] It should be noted that when the rotary joint is connected to a water pipe and other equipment, such as a nozzle or spray gun, the water pressure inside the outer connector 20 of the rotary joint will force the inner connector 10 outward. Under this water pressure, the inner connector 11 of the inner connector 10 will be in close contact with the outer connector 21 of the outer connector 20. Therefore, to prevent the pivot assembly 30 from bearing excessive water pressure, an adjustment gap 210 is formed at the end of the outer connector 21. When the water pressure is too high, the pressure borne by the pivot assembly 30 can be adjusted by adjusting the relative positions of the inner connector 10 and the outer connector 20.

[0073] The external connector 20 has an external plug 22 adapted to connect to a spray head, faucet, spray gun, or other accessories. The external plug 22 further includes a connecting member 221 and an anti-slip member 222. The connecting member 221 is a threaded connection, and the anti-slip member 222 facilitates the installation of the external connector 20. As an example, in this preferred embodiment of the application, the connecting member 221 has an internal thread structure, and the connecting member 221 and the anti-slip member 222 are arranged back-to-back.

[0074] like Figure 5As shown, a rotary joint according to a second preferred embodiment of this application is described below. The rotary joint differs from the preferred embodiment described above in that the external connector 20A has an external plug 22A, wherein the external plug 22A further comprises a connecting member 221A and an anti-slip member 222A, wherein the connecting member 221A has an external thread structure, and the anti-slip member 222A is formed on the surface of the external plug 22A.

[0075] like Figure 6 As shown, a rotary joint according to a third preferred embodiment of this application is described below. Unlike the first and second preferred embodiments described above, the pivoting component 30B of the rotary joint is implemented as a magnetic levitation mechanism in this preferred embodiment. The pivoting component 30B includes a first magnetic ring 34B and a second magnetic ring 35B, wherein the first magnetic ring 34B and the second magnetic ring 35B face each other, and the magnetic poles of their opposing surfaces are the same. That is, the magnetic pole of the first magnetic ring 34B facing the second magnetic ring 35B is the same as the magnetic pole of the second magnetic ring 35B facing the first magnetic ring 34B. Under the mutual repulsion of the magnetic forces of the first magnetic ring 34B and the second magnetic ring 35B, a levitation gap is formed between them. In other words, in this preferred embodiment of this application, the first magnetic ring 34B and the second magnetic ring 35B do not contact each other under magnetic action, avoiding sliding friction.

[0076] The first magnetic ring 34B of the pivot assembly 30B is attracted to the inner connector 11, and the second magnetic ring 35B is attracted to the outer connector 21. The inner connector 11 and the outer connector 21 will not come into contact with each other under the action of magnetic repulsion. In this way, the friction between the inner connector 11 and the outer connector 21 is very small, which facilitates relative rotation.

[0077] It is worth mentioning that, in this preferred embodiment of the present application, the first magnetic ring 34B of the pivot assembly 30B includes at least one magnetic unit, such as a magnet or a magnetite, and the magnetic unit is arranged in a ring on one side of the inner adapter 11, facing the second magnetic ring 35B; the second magnetic ring 35B includes at least one magnetic unit, such as a magnet or a magnetite, and the magnetic unit is arranged in a ring on one side of the outer adapter 21, facing the first magnetic ring 34B.

[0078] Preferably, in this preferred embodiment of the present application, the first magnetic ring 34B and the second magnetic ring 35B of the pivot assembly 30B are ring magnets or ring magnets.

[0079] Refer to the accompanying drawings in this application specification. Figure 7 As shown, a nozzle according to a fourth preferred embodiment of this application is described below. The nozzle includes a nozzle body 100 and a rotary joint 200, wherein the structure of the rotary joint 200 is the same as that of the rotary joints in the first to third preferred embodiments described above, and will not be repeated here.

[0080] The nozzle body 100 has a water inlet located at its lower end. A rotary joint 200 is detachably disposed at the lower end of the nozzle body 100. The outer connector 20 of the rotary joint 200 is connected to the nozzle body 100 through the water inlet. The inner connector 10 of the rotary joint 200 can be connected to a water pipe 300, thereby connecting the water pipe 300 and the nozzle body 100.

[0081] It is understood that when the water pipe 300 and / or the nozzle body 100 rotate relative to each other, or when the water pipe becomes entangled, the inner connector 10 and the outer connector 20 of the rotary joint 200 rotate relative to each other under the action of the pivot assembly 30. Whether the water pipe is flowing with water or not but has water pressure, the outer connector 20 of the rotary joint 200 can rotate freely and flexibly relative to the water pipe 300, and the inner connector 10 of the rotary joint 200 can rotate freely and flexibly relative to the nozzle body 100. This greatly improves flexibility during use and reduces or avoids entanglement and bending.

[0082] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and any variations or modifications may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A rotary joint for water pipes, characterized in that, include: An external connector, wherein the external connector includes an external adapter and an external plug integrally extending from the external adapter along the axial direction of the external connector channel; An inner connector, wherein the inner connector includes an inner adapter, an inner plug, and an adapter shaft located between the inner adapter and the inner plug, the inner adapter being held inside the outer connector; and At least one pivoting assembly, the pivoting assembly including a first track, a second track and at least one planar bearing disposed between the first track and the second track, wherein the first track and the second track form a bearing chamber for receiving the planar bearing, the planar bearing being disposed in the bearing chamber; The inner adapter has an inner mating surface, and the outer adapter has an outer mating surface. The inner mating surface of the inner adapter and the outer mating surface of the outer adapter face each other. The first track of the pivot assembly abuts against the inner mating surface of the inner adapter, and the second track abuts against the outer mating surface of the outer adapter. The first track has an upper groove, and the second track has a lower groove, wherein the upper groove of the first track and the lower groove of the second track are directly opposite each other, and the planar bearing is clamped between the upper groove of the first track and the lower groove of the second track; The planar bearing includes a bearing housing and a plurality of balls, wherein the plurality of balls are rotatably disposed in the bearing housing, and wherein each ball is arranged in the bearing housing at equal intervals. The inner adapter is provided with at least one waterproof groove, and at least one waterproof strip is installed in the at least one waterproof groove. The waterproof strip is pressed between the inner adapter and the outer adapter. The outer adapter has an open end, the inner adapter has an inner adapter end face, and the opening plane of the open end and the inner adapter end face have an adjustment gap in the axial direction. The pivoting assembly, the inner adapter, and the corresponding adapter shaft on the inner side of the pivoting assembly are sleeved in a built-in cavity of the outer connector, wherein the outer connector channel of the outer connector is connected to the built-in cavity of the outer connector; on the inner side of the outer adapter, the inner adapter, the outer adapter, and the adapter shaft form a rotating receiving cavity, wherein the pivoting assembly is rotatably disposed in the rotating receiving cavity; the outer adapter includes a non-detaching end, and the inner adapter is restricted within the built-in cavity by the non-detaching end.

2. The rotary joint according to claim 1, wherein the bearing housing is an annular retainer, and the plurality of balls are equally spaced and embedded in the circumferential receiving holes of the bearing housing.

3. The rotary joint according to claim 1, wherein the pivoting assembly includes a first magnetic ring and a second magnetic ring, wherein the first magnetic ring and the second magnetic ring face each other, and the magnetic poles of the opposing surfaces of the first magnetic ring and the second magnetic ring are the same.

4. The rotary joint according to claim 3, wherein the first magnetic ring and the second magnetic ring of the pivoting assembly are ring magnets or ring magnets.

5. The rotary joint according to claim 4, wherein the outer plug is provided with a connecting component and an anti-slip component, wherein the connecting component is a threaded connector.

6. The rotary joint according to claim 5, wherein the connecting component has an internal thread structure, and wherein the connecting component and the anti-slip component are arranged back to back.

7. The rotary joint according to claim 5, wherein the connecting member has an external thread structure and the anti-slip member is formed on the surface of the external plug.

8. A nozzle, characterized in that, include: Nozzle body; and The rotary joint as described in any one of claims 1 to 7, wherein the nozzle body has a water inlet, and the external connector of the rotary joint is connected to the nozzle body through the water inlet.

9. The nozzle according to claim 8, characterized in that, The water inlet is located at the lower end of the nozzle body, and the rotary joint is detachably disposed at the lower end of the nozzle body.

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