Rotary conductive mechanism, rotary gap power supply device and electroplating device

Abstract

The invention relates to the technical field of conductive devices, and provides a rotary conductive mechanism, a rotary gap power supply device and an electroplating device.The rotary conductive mechanism comprises a first terminal assembly, a second terminal assembly and an on-off fluid, and the second terminal assembly is provided with at least two current output ends; the second terminal assembly and the first terminal assembly are enclosed to form an accommodating space, and the second terminal assembly can rotate around the axis of the first terminal assembly relative to the first terminal assembly; and the on-off fluid is arranged in the accommodating space, and when the second terminal assembly rotates around the axis relative to the first terminal assembly, the on-off fluid is used for selectively conducting each current output end and the first terminal assembly. Compared with a metal conductor, the rotary conductive mechanism provided by the invention has the advantages that the occurrence of dust phenomena can be greatly reduced by adopting the on-off fluid, the contact resistance is smaller, and the working temperature is lower.

Description

Technical Field

[0001] The present invention relates to the technical field of conductive devices, and in particular provides a rotating conductive mechanism, a rotating gap power supply device having the rotating conductive mechanism, and an electroplating device having the rotating conductive mechanism. Background Art

[0002] In the related technical field of rotating conductive mechanisms, when a first power supply terminal and a second power supply terminal generate relative rotational displacement in an axial direction, on-off control is usually performed by friction gap contact of metal conductors.

[0003] However, metal dust is generated when metal conductors are rubbed, and the escape of metal dust may cause pollution to the working environment and increase the wear of the movable pair; also, when the metal conductor contacts and separates from the first power supply terminal, the edge conductive surface is sharply reduced, resulting in increased resistance, local thermal effects, and even power generation, which ultimately leads to heat accumulation and structural temperature rise. Summary of the invention

[0004] The purpose of the present invention is to provide a rotating conductive mechanism, a rotating gap power supply device and an electroplating device, aiming to solve the problem of inconvenience in use of the existing rotating conductive mechanism due to the use of metal conductors.

[0005] To achieve the above object, the technical solution adopted by the present invention is: In a first aspect, an embodiment of the present application provides a rotating conductive mechanism, comprising: A first terminal assembly, the first terminal assembly is used for current input; a second terminal assembly, the second terminal assembly is used for current output, the second terminal assembly has at least two current output terminals, the second terminal assembly and the first terminal assembly are enclosed to form an accommodating space, and the second terminal assembly can rotate relative to the first terminal assembly around the axis of the first terminal assembly; and A switching fluid is placed in the accommodating space, and when the second terminal assembly rotates around the axis relative to the first terminal assembly, the switching fluid is used to selectively conduct each of the current output ends and the first terminal assembly.

[0006] Beneficial effects of the present invention: The rotating conductive mechanism provided by the present invention is filled with a switching fluid in the accommodation space enclosed by the first terminal assembly and the second terminal assembly. In this way, when the second terminal assembly rotates around the axis relative to the first terminal assembly, the switching fluid can realize the first terminal assembly and one or more current output terminals to conduct, so as to achieve the selective conduction of each current output terminal during the rotation of the entire rotating conductive mechanism. At the same time, compared with the use of metal conductors, the use of the switching fluid can greatly reduce the occurrence of dust, and the contact resistance is smaller and the operating temperature is lower.

[0007] In some embodiments, each of the current output ends is circumferentially distributed with the axis of the first terminal assembly as the center line, and each of the current output ends is sequentially connected to the first terminal assembly through the switching fluid when the second terminal assembly rotates around the axis relative to the first terminal assembly.

[0008] In some embodiments, the first terminal assembly includes a first terminal portion for current input and a cover portion provided on the first terminal portion and concentrically arranged with the first terminal portion, the second terminal assembly includes a cylindrical portion enclosed with the cover portion to form the accommodating space and the current output end provided on the end side of the cylindrical portion away from the cover portion, the cylindrical portion is an insulator, and the switching fluid is used to conduct the cover portion and the current output end.

[0009] In some embodiments, the axial direction of the first terminal portion extends in a horizontal direction, the switching fluid includes an insulating fluid and a conductive fluid of different densities and immiscible, and the insulating fluid and the conductive fluid are arranged in layers in a vertical direction.

[0010] In some embodiments, in the vertical direction, the insulating fluid and the conductive fluid are arranged in layers one above the other; or, The conductive fluid and the insulating fluid are arranged in layers one above the other; or, The insulating fluid includes a first insulator fluid and a second insulator fluid with different densities. The density of the conductor fluid is greater than the density of one of the first insulator fluid and the second insulator fluid, and less than the density of the other of the two. The first insulator fluid, the conductor fluid and the second insulator fluid are arranged in upper, middle and lower layers.

[0011] In some embodiments, the first terminal assembly includes a first terminal portion for current input, a cover portion provided on the first terminal portion and concentrically arranged with the first terminal portion, and a plurality of second terminal portions provided on a side of the cover portion opposite to the first terminal portion and eccentrically arranged with the first terminal portion; the second terminal assembly includes a cylindrical portion enclosed with the cover portion to form the accommodating space, a base portion provided in the cylindrical portion and rotating around an axis relative to the cylindrical portion, and the current output end provided at the end side of the cylindrical portion away from the cover portion, a plurality of first accommodating grooves are formed on the cylindrical portion, one end of each of the current output ends extends into the corresponding first accommodating groove, a plurality of second accommodating grooves are formed on the base portion, each of the second accommodating grooves corresponds to each of the first accommodating grooves, so that the accommodating space is divided into a plurality of sub-cavities, each of the second terminal portions is passed through the base portion and extends into the corresponding second accommodating groove, and the number of the second terminal portions is less than the number of the second accommodating grooves, and the cover portion is connected to the base portion.

[0012] In some embodiments, the number of the second terminal portion is one, and the second terminal portion extends into one of the second receiving grooves.

[0013] In some embodiments, the cylindrical portion comprises a cylindrical body having an open end and an annular end cover covering the open end of the cylindrical body, wherein the inner diameter of the annular end cover is greater than the outer diameter of the base portion; or, The outer diameter of the cover plate portion is equal to the inner diameter of the annular end cover.

[0014] In some embodiments, the cover portion is detachably connected to the base portion; and / or the second terminal portion abuts against the cover portion.

[0015] In some embodiments, a sealing ring is provided between the inner wall of the cylinder and the outer wall of the base.

[0016] In a second aspect, an embodiment of the present application provides a rotating gap power supply device, comprising the rotating conductive mechanism described above.

[0017] In a third aspect, an embodiment of the present application further provides an electroplating device, comprising the rotating conductive mechanism described above.

[0018] It can be understood that the beneficial effects of the second and third aspects mentioned above can be found in the relevant description of the first aspect mentioned above, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 A schematic structural diagram of a rotating conductive mechanism provided in Embodiment 1 of the present invention; Figure 2 An exploded diagram of a rotating conductive mechanism provided in Embodiment 1 of the present invention; Figure 3 A cross-sectional view of a rotating conductive mechanism provided in Embodiment 1 of the present invention; Figure 4 A cross-sectional view of a rotating conductive mechanism provided in Embodiment 2 of the present invention; Figure 5 This is a cross-sectional view of the rotating conductive mechanism provided in the third embodiment of the present invention.

[0021] Among them, the reference numerals in the figure are: 100. Rotating conductive mechanism; 10. first terminal assembly; 11. first terminal portion; 12. cover portion; 13. second terminal portion; 20, second terminal assembly; 21, cylindrical portion; 22, base portion; 23, current output end; 21a, first receiving groove; 22a, second receiving groove; 211, cylinder; 212, annular end cover; 24, sealing ring; 30. Switching fluid; 31. Insulating fluid; 32. Conducting fluid; 311. First insulator fluid; 312. Second insulator fluid. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not 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" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The rotating conductive mechanism is a conductive mechanism that allows the current input terminal and the current output terminal to rotate relative to each other around an axis. Usually, a metal conductor is used as a transition connection between the current input terminal and the current output terminal to meet the corresponding electrical conduction requirements.

[0027] However, in practical applications in related fields, the use of metal conductors as intermediate structural parts will cause contact wear, thereby generating a large amount of dust. At the same time, when the metal conductor contacts or separates from the current input end or the current output end, there is a large contact resistance, and the local thermal effect becomes more and more obvious.

[0028] In view of this, in order to solve the series of problems brought about by the above-mentioned metal conductors, the rotating conductive mechanism provided in the present application utilizes the first terminal assembly and the second terminal assembly to enclose a accommodating space, and a switching fluid is arranged in the accommodating space, so as to meet the requirements that when the first terminal assembly and the second terminal assembly rotate relative to each other around the axis, the dust and large contact resistance caused by frictional contact can also be reduced.

[0029] Please refer to Figures 1 to 5 In a first aspect, an embodiment of the present application provides a rotating conductive mechanism 100 , including a first terminal assembly 10 , a second terminal assembly 20 , and a switching fluid 30 .

[0030] Among them, the first terminal assembly 10 is used to connect to an external power supply or electrical device to realize current input; the second terminal assembly 20 is used to connect or contact with an electrical object to realize current output; the on-off fluid 30 is a fluid that can conduct electricity, and when the first terminal assembly 10 and the second terminal assembly 20 rotate relative to each other around the axis, the on-off fluid 30 always maintains or at least partially maintains a fluid flow state.

[0031] The first terminal assembly 10 is used for current input. The second terminal assembly 20 is used for current output. The second terminal assembly 20 has at least two current output terminals 23. The second terminal assembly 20 and the first terminal assembly 10 enclose a receiving space, and the second terminal assembly 20 can rotate relative to the first terminal assembly 10 around the axis of the first terminal assembly 10. The on-off fluid 30 is placed in the receiving space. When the second terminal assembly 20 rotates relative to the first terminal assembly 10 around the axis, the on-off fluid 30 is used to selectively conduct each current output terminal 23 with the first terminal assembly 10.

[0032] The accommodation space enclosed by the second terminal assembly 20 and the first terminal assembly 10 should be a closed space, and the on-off fluid 30 should be accommodated in the accommodation space. At the same time, it is also necessary to satisfy that the second terminal assembly 20 and the first terminal assembly 10 can rotate relative to each other around the axis. For example, the second terminal assembly 20 can be similar to a cylindrical structure, and the first terminal assembly 10 can be similar to a plate-like structure. Then, the plate-like structure is blocked at the open end of the cylindrical structure to form a closed space, or both terminal assemblies are cylindrical structures, that is, the open ends of the two cylindrical structures are correspondingly covered to form a closed space. And, each current output terminal 23 should be partially extended into the accommodation space, and the other part extends to the outside.

[0033] The on-off fluid 30 can achieve electrical conduction between the first terminal assembly 10 and the second terminal assembly 20 . Therefore, the on-off fluid 30 may be entirely a conductive fluid or a combination of a conductive fluid and an insulating fluid.

[0034] For example, when the on-off fluid 30 is a combination of a conductive fluid and an insulating fluid, the two fluids should not be fused and have a large difference in density, that is, the on-off fluid 30 exhibits a stratification phenomenon during use. Then, when the current output ends 23 of the second terminal assembly 20 rotate around the axis, the current output ends 23 that are in contact with the conductive fluid in the on-off fluid 30 are in a conductive state, and the other current output ends 23 that are in contact with the insulating fluid in the on-off fluid 30 are in a disconnected state, so that each current output end 23 can be selectively conductive with the first terminal assembly 10.

[0035] Alternatively, when the on-off fluid 30 is only a conductive fluid, the conductive fluid may not fill the accommodating space. In this way, when the first terminal assembly 10 and the second terminal assembly 20 rotate relative to each other around the axis, each current output terminal 23 contacts the conductive fluid sequentially in the direction of rotation around the axis to achieve conduction, and each current output terminal 23 is disconnected from the conductive fluid. In this way, each current output terminal 23 is sequentially conductive in the direction of rotation.

[0036] The rotary conductive mechanism 100 provided by the present invention is filled with a switching fluid 30 in the accommodation space enclosed by the first terminal assembly 10 and the second terminal assembly 20. Thus, when the second terminal assembly 20 rotates around the axis relative to the first terminal assembly 10, the switching fluid 30 can realize the first terminal assembly 10 and one or more current output terminals 23 to conduct selectively conduct the current output terminals 23 during the rotation of the entire rotary conductive mechanism 100. At the same time, compared with the use of metal conductors, the use of the switching fluid 30 can greatly reduce the occurrence of dust, and the contact resistance is smaller and the operating temperature is lower.

[0037] Please refer to Figure 2 and Figure 3 In some embodiments, each current output end 23 is circumferentially distributed with the axis of the first terminal assembly 10 as the center line, and each current output end 23 is sequentially connected to the first terminal assembly 10 through the switching fluid 30 when the second terminal assembly 20 rotates around the axis relative to the first terminal assembly 10.

[0038] It can be understood that the rotating shaft of the first terminal assembly 10 is the rotation center axis of the first terminal assembly 10, and each current output terminal 23 rotates around the rotation center axis. For example, each current output terminal 23 can rotate clockwise or counterclockwise relative to the first terminal assembly 10. When each current output terminal 23 rotates around the axis in sequence, it is sequentially connected or disconnected with the on-off fluid 30, so that each current output terminal 23 is sequentially connected with the first terminal assembly 10 along the rotation direction.

[0039] For example, when the switching fluid 30 is a conductive fluid and does not fill the accommodation space, the rotating conductive mechanism 100 is placed horizontally when in use, that is, the extension direction of each current output terminal 23 is the same as the axial direction of the first terminal assembly 10, and is in the horizontal direction. In this way, the conductive fluid is placed at the bottom of the accommodation space under the action of gravity. Then, when the current output terminal 23 enters the conductive fluid around the axis, the current current output terminal 23 is connected to the first terminal assembly 10, and when the current output terminal 23 moves out of the conductive fluid around the axis, the current current output terminal 23 is disconnected from the first terminal assembly 10. Of course, the switching fluid 30 can also include an insulating fluid, which does not blend with the conductive fluid and has a difference in density. Therefore, the insulating fluid can fill the remaining empty part of the accommodation space, that is, the current output terminal 23 that moves out of the conductive fluid sequentially enters the insulating fluid. Similarly, the current output terminal 23 can be disconnected from the first terminal assembly 10.

[0040] In other embodiments, the current output terminal 23 may be arranged along the axial direction of the first terminal assembly 10, that is, the current output terminal 23 is arranged coaxially with the first terminal assembly 10. When the volume of the conductive fluid is greater than half of the volume of the accommodating space, the current output terminal 23 of the horizontally placed rotating conductive mechanism 100 is always in the conductive fluid. Then, the current output terminal 23 coaxially arranged with the first terminal assembly 10 is always conductive with the first terminal assembly 10.

[0041] Please refer to Figure 4 and Figure 5 In some embodiments, the first terminal assembly 10 includes a first terminal portion 11 for current input and a cover portion 22 disposed on the first terminal portion 11 and concentrically disposed with the first terminal portion 11, the second terminal assembly 20 includes a cylindrical portion 21 enclosed with the cover portion 22 to form an accommodating space, and a current output end 23 disposed on the end side of the cylindrical portion 21 away from the cover portion 22, the cylindrical portion 21 is an insulator, and the switching fluid 30 is used to conduct the cover portion 22 and the current output end 23.

[0042] It can be understood that the cover portion 22 is covered on the open end of the cylindrical portion 21 and encloses the cylindrical portion 21 to form a closed accommodating space, and each current output terminal 23 is arranged at the closed end of the cylindrical portion 21, that is, arranged on the end side of the cylindrical portion 21 away from the cover portion 22. Here, the current output terminal 23 can be fixedly connected to the cylindrical portion 21, for example, integrally formed or welded, etc., and can also be detachably connected to the cylindrical portion 21, for example, by threaded connection or plug-in.

[0043] Then, the switching fluid 30 is filled in the accommodating space to achieve conduction between the cover portion 22 and the current output end 23 .

[0044] Please refer to Figure 4 and Figure 5 In some embodiments, the axial direction of the first terminal portion 11 extends in the horizontal direction, and the switching fluid 30 includes an insulating fluid 31 and a conductive fluid 32 of different densities and immiscible, and the insulating fluid 31 and the conductive fluid 32 are arranged in layers in the vertical direction.

[0045] It can be understood that in this embodiment, the rotating conductive mechanism 100 is used in a horizontal state, that is, the axial direction of the first terminal portion 11 extends in the horizontal direction. Therefore, the insulating fluid 31 and the conductive fluid 32 with different densities and cannot be fused are arranged in layers in the accommodating space under the action of gravity.

[0046] Here, the insulating fluid 31 is a fluid with insulating properties or extremely low conductivity, which can effectively prevent the passage of current. For example, the insulating fluid 31 can be mineral oil, silicone oil, ester oil, synthetic oil, etc. The conductive fluid 32 is a fluid with conductive properties. Such fluids can usually be composed of charged particles, conductive substances or electrolyte solutions. For example, the conductive fluid 32 can be electrolyte solutions, metal liquids, ionic liquids, etc.

[0047] The density of the insulating fluid 31 and the density of the conductive fluid 32 are different and cannot be merged. Therefore, when the rotating conductor mechanism is in a horizontal state, the insulating fluid 31 and the conductive fluid 32 are in a layered state under the action of gravity. For example, the insulating fluid 31 can be silicone oil, and the conductive fluid 32 can be an electrolyte solution. In this way, the insulating fluid 31 and the conductive fluid 32 are layered up and down. Of course, it can also be achieved by adjusting the density of the fluid, so that the insulating fluid and the conductive fluid 32 are layered up and down in the direction of gravity, or the conductive fluid 32 is arranged in the middle, and there is a "sandwich layer" of the insulating fluid 31 above and below the conductive fluid 32.

[0048] Please refer to Figure 4 and Figure 5 In some embodiments, in the vertical direction, the insulating fluid 31 and the conductive fluid 32 are arranged in layers; or The conductive fluid 32 and the insulating fluid 31 are arranged in layers one above the other; or, The insulating fluid 31 includes a first insulating fluid 311 and a second insulating fluid 312 with different densities. The density of the conductive fluid 32 is greater than the density of one of the first insulating fluid 311 and the second insulating fluid 312, and less than the density of the other. The first insulating fluid 311, the conductive fluid 32 and the second insulating fluid 312 are arranged in upper, middle and lower layers.

[0049] It can be understood that in the direction of gravity, the insulating fluid 31 and the conductive fluid 32 are arranged in layers up and down. Then, when each current output end 23 rotates around the axis of the first terminal portion 11, the current output end 23 in contact with the conductive fluid 32 is in a conducting state, and the current output end 23 in contact with the insulating fluid 31 is in a disconnected state. Of course, by artificially adjusting the density of the fluid, it is also possible to achieve that the conductive fluid 32 and the insulating fluid 31 are arranged in layers up and down. In addition, the insulating fluid 31 is divided into a first insulating fluid 311 and a second insulating fluid 312, and the density of the conductive fluid 32 is between the densities of the two insulating fluids. In this way, the first insulating fluid 311, the conductive fluid 32, and the second insulating fluid 312 are arranged in layers up, middle, and down.

[0050] Of course, in other embodiments, the conductive fluid 32 can also be divided into a first conductive sub-fluid and a second conductive sub-fluid with different densities. Similarly, the density of the insulating fluid 31 is between the densities of the two conductive sub-fluids. In this way, the first conductive sub-fluid, the insulating fluid 31 and the second conductive sub-fluid are arranged in upper, middle and lower layers.

[0051] Please refer to Figure 2 and Figure 3 In some embodiments, the first terminal assembly 10 includes a first terminal portion 11 for current input, a cover portion 22 disposed on the first terminal portion 11 and concentrically disposed with the first terminal portion 11, and a plurality of second terminal portions 13 disposed on a side of the cover portion 22 facing away from the first terminal portion 11 and eccentrically disposed with respect to the first terminal portion 11; the second terminal assembly 20 includes a cylindrical portion 21 enclosed with the cover portion 22 to form an accommodating space, a base portion 22 disposed in the cylindrical portion 21 and rotating around an axis relative to the cylindrical portion 21, and a base portion 22 disposed at an end side of the cylindrical portion 21 away from the cover portion 22. A current output end 23 is formed on the cylindrical portion 21, and a plurality of first accommodating grooves 21a are formed on the cylindrical portion 21, and one end of each current output end 23 extends into the corresponding first accommodating groove 21a. A plurality of second accommodating grooves 22a are formed on the base portion 22, and each second accommodating groove 22a corresponds to each first accommodating groove 21a, so that the accommodating space is divided into a plurality of sub-cavities, and each second terminal portion 13 is penetrated through the base portion 22 and extends into the corresponding second accommodating groove 22a, and the number of the second terminal portions 13 is less than the number of the second accommodating grooves 22a, and the cover portion 22 is connected to the base portion 22.

[0052] It can be understood that the current enters from the first terminal portion 11 , passes through the cover portion 22 , and then flows out from the second terminal portion 13 , and then passes through the switching fluid 30 to achieve conduction with the corresponding current output terminal 23 .

[0053] Here, the barrel portion and the base portion 22 rotate relative to each other around the axis. For example, when the base portion 22 and the second terminal portion 13 remain relatively stationary, the barrel portion drives each current output terminal 23 to rotate around the axis. In the barrel portion, each first receiving groove 21a is provided with a current output terminal 23, and the number of the second receiving grooves 22a is the same as the number of the first receiving grooves 21a and the positions are corresponding. That is, when the barrel portion rotates relative to the base portion 22 around the axis, each first receiving groove 21a and the corresponding second receiving groove 22a enclose a space independent cavity, that is, the receiving space is separated. A plurality of independent cavities are formed, each of which is filled with a switching fluid 30. Thus, when current enters from the first terminal portion 11, flows through the cover portion 22, and then flows out from the second terminal portion 13, a cavity is formed by the second receiving groove 22a accommodating the second terminal portion 13 and the first receiving groove 21a, and the cavity is filled with a switching conductor. The second terminal portion 13 is connected to the current output end 23 in the current first receiving groove 21a through the switching fluid 30. Therefore, when the cylinder portion continuously rotates around the axis relative to the base portion 22, the corresponding current output end 23 is connected to the second terminal portion 13 in sequence.

[0054] In some embodiments, the number of the second terminal portion 13 is one, and the second terminal portion 13 extends into one of the second receiving grooves 22 a.

[0055] It can be understood that when the number of the second terminal portion 13 is one, when the barrel portion continuously rotates around the axis relative to the base portion 22 , only one current output end 23 among the current output ends 23 is conductively connected to the second terminal portion 13 .

[0056] Of course, in other embodiments, a plurality of second terminal portions 13 may be provided so that when the barrel portion rotates around the axis relative to the base portion 22 , current input terminals having the same number as the second terminal portions 13 are turned on.

[0057] Please refer to Figure 3 In some embodiments, the cylindrical portion 21 includes a cylindrical body 211 having an open end and an annular end cover 212 covering the open end of the cylindrical body 211, and the inner diameter of the annular end cover 212 is greater than the outer diameter of the base portion 22; or The outer diameter of the cover plate portion 22 is equal to the inner diameter of the annular end cover 212 .

[0058] It can be understood that the base portion 22 is limited by the annular end cover 212 to limit the base portion 22 in the cylinder 211. Alternatively, the annular end cover 212 can also limit the cover portion 22 to limit the cover portion 22 and the base portion 22 in the cylinder 211 together.

[0059] Please refer to Figure 3In some embodiments, the cover portion 22 is detachably connected to the base portion 22 ; and / or the second terminal portion 13 abuts against the cover portion 22 .

[0060] It can be understood that relative movement will occur between the base portion 22 and the cylinder portion 211, and wear is inevitable. Therefore, the base portion 22 is a consumable part. Therefore, detachably connecting the cover portion 22 and the base portion 22 can further reduce costs. Here, the detachable connection between the cover portion 22 and the base portion 22 can be threaded connection, plug-in connection, snap-on connection, etc.

[0061] Similarly, the second terminal portion 13 abuts against the cover portion 22, that is, the second terminal portion 13 is only in contact in physical space and is not fixed and connected using a corresponding structure. At the same time, the need to replace the second terminal portion 13 at any time is met.

[0062] Please refer to Figure 3 In some embodiments, a sealing ring 24 is provided between the inner wall of the cylinder 211 and the outer wall of the base 22 .

[0063] It is understandable that in order to reduce the probability of leakage, a sealing ring 24 is added between the inner wall of the cylinder 211 and the outer wall of the base 22. The sealing ring 24 needs to play a certain sealing role, and also needs to ensure the smoothness of the rotation of the cylinder 211 relative to the base 22 around the axis.

[0064] In a second aspect, an embodiment of the present application provides a rotating gap power supply device, comprising the above-mentioned rotating conductive mechanism 100.

[0065] It can be understood that the rotating intermittent power supply device should have a current input side and a current output side, and the rotating conductive mechanism 100 connects the current input side and the current output side to achieve intermittent switching of the current output side.

[0066] In a third aspect, an embodiment of the present application further provides an electroplating device, comprising the above-mentioned rotating conductive mechanism 100.

[0067] It can be understood that during the electroplating process, the electroplating equipment needs to rotate continuously to achieve uniform electroplating of the plated workpiece, and the DC power provided by the electroplating power supply needs to be transmitted to the rotating plated workpiece. At this time, the rotating conductive mechanism 100 is installed at the rotation center of the electroplating equipment, the first terminal assembly 10 of the rotating conductive mechanism 100 is connected to a fixed power supply line, and the second terminal assembly 20 of the rotating conductive mechanism 100 corresponds to the rotating plated workpiece, so that the current can be stably transmitted to the plated workpiece, thereby ensuring the smooth progress of the electroplating process.

[0068] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotating conductive mechanism, characterized in that: include: A first terminal assembly, the first terminal assembly is used for current input; A second terminal assembly, the second terminal assembly is used for current output, the second terminal assembly has at least two current output terminals, the second terminal assembly and the first terminal assembly are enclosed to form an accommodating space, and the second terminal assembly can rotate relative to the first terminal assembly around the axis of the first terminal assembly; as well as, A switching fluid is placed in the accommodating space, and when the second terminal assembly rotates around the axis relative to the first terminal assembly, the switching fluid is used to selectively conduct each of the current output ends and the first terminal assembly.

2. The rotating conductive mechanism according to claim 1, characterized in that: The current output ends are circumferentially distributed with the axis of the first terminal assembly as the center line, and the current output ends are sequentially connected to the first terminal assembly through the switching fluid when the second terminal assembly rotates around the axis relative to the first terminal assembly.

3. The rotating conductive mechanism according to claim 2, characterized in that: The first terminal assembly includes a first terminal portion for current input and a cover portion provided on the first terminal portion and concentrically arranged with the first terminal portion, the second terminal assembly includes a cylindrical portion enclosed with the cover portion to form the accommodating space and the current output end provided on the end side of the cylindrical portion away from the cover portion, the cylindrical portion is an insulator, and the switching fluid is used to conduct the cover portion and the current output end.

4. The rotating conductive mechanism according to claim 3, characterized in that: The axial direction of the first terminal portion extends in the horizontal direction. The switching fluid includes an insulating fluid and a conductive fluid having different densities and being immiscible. The insulating fluid and the conductive fluid are arranged in layers in the vertical direction.

5. The rotating conductive mechanism according to claim 4, characterized in that: In the vertical direction, the insulating fluid and the conductive fluid are arranged in layers one above the other; or, The conductive fluid and the insulating fluid are arranged in layers up and down; or, The insulating fluid includes a first insulator fluid and a second insulator fluid with different densities. The density of the conductor fluid is greater than the density of one of the first insulator fluid and the second insulator fluid, and less than the density of the other of the two. The first insulator fluid, the conductor fluid and the second insulator fluid are arranged in upper, middle and lower layers.

6. The rotating conductive mechanism according to claim 2, characterized in that: The first terminal assembly includes a first terminal portion for current input, a cover portion provided on the first terminal portion and concentrically provided on the first terminal portion, and a plurality of second terminal portions provided on a side of the cover portion opposite to the first terminal portion and eccentrically provided with the first terminal portion; the second terminal assembly includes a cylindrical portion enclosed with the cover portion to form the accommodating space, a base portion provided in the cylindrical portion and rotating around an axis relative to the cylindrical portion, and the current output end provided at the end side of the cylindrical portion away from the cover portion, a plurality of first accommodating grooves are formed on the cylindrical portion, one end of each of the current output ends extends into the corresponding first accommodating groove, a plurality of second accommodating grooves are formed on the base portion, each of the second accommodating grooves corresponds to each of the first accommodating grooves, so that the accommodating space is divided into a plurality of sub-cavities, each of the second terminal portions is penetrated through the base portion and extends into the corresponding second accommodating groove, and the number of the second terminal portions is less than the number of the second accommodating grooves, and the cover portion is connected to the base portion.

7. The rotating conductive mechanism according to claim 6, characterized in that: The number of the second terminal portion is one, and the second terminal portion extends into one of the second accommodating grooves.

8. The rotating conductive mechanism according to claim 6, characterized in that: The cylindrical portion comprises a cylindrical body having an open end and an annular end cover covering the open end of the cylindrical body, wherein the inner diameter of the annular end cover is greater than the outer diameter of the base portion; or, The outer diameter of the cover plate portion is equal to the inner diameter of the annular end cover.

9. The rotating conductive mechanism according to claim 6, characterized in that: The cover portion is detachably connected to the base portion; and / or the second terminal portion abuts against the cover portion.

10. The rotating conductive mechanism according to claim 8, characterized in that: A sealing ring is arranged between the inner wall of the cylinder and the outer wall of the base.

11. A rotating gap power supply device, characterized in that: It comprises the rotating conductive mechanism as claimed in any one of claims 1 to 10.

12. An electroplating device, characterized in that: It comprises the rotating conductive mechanism as claimed in any one of claims 1 to 10.

Images