A high-frequency anti-interference rotary connector and a high-frequency anti-interference rotary connector assembly

Abstract

The application discloses a high-frequency anti-interference rotary connector and a high-frequency anti-interference rotary connector assembly, which comprise a plurality of conductive rings and a plurality of brush groups. The brushes in the same brush group are connected through inner layer copper cladding and are in an adjacent state. A plurality of brush groups form a second cable connection group. The brush group in the middle of the second cable connection group is used for connecting the inner conductor of a second radio frequency cable. The remaining brush groups on both sides of the brush group in the middle are used for connecting the corresponding layer outer conductor of the second radio frequency cable. The brush groups connected with the same layer outer conductor are connected through outer layer copper cladding to form an outer shielding ring. A plurality of outer shielding rings are distributed in a radial manner with the brush group in the middle as the center, simulate the structure of the corresponding coaxial cable, and wrap and protect the coaxial radio frequency signal. A protrusion is formed on the outermost conductive ring in a first cable connection group. A plurality of brush groups are located between the two protrusions. The two protrusions simulate the outer shielding layer of the coaxial cable structure and avoid the interference of external signals on the coaxial radio frequency signal.

Description

Technical Field

[0001] This invention belongs to the field of electrical rotary connector technology, specifically relating to a high-frequency anti-interference rotary connector and a high-frequency anti-interference rotary connector assembly suitable for coaxial radio frequency signal transmission. Background Technology

[0002] With the development of weaponry and equipment, the demand for radio frequency (RF) signal transmission is increasing, and in some scenarios, six or more RF signal channels may be required. Existing connectors for transmitting RF signals during rotation are classified as follows:

[0003] (1) Radio frequency rotary connector, such as Chinese utility model patent application number 201721411402.6, consists of a rotor end and a stator end. The rotor end includes a flange, a rotor housing, a rotor outer conductor, and a rotor inner conductor. The flange, rotor housing, and rotor outer conductor are integrated. The diameter of the rotor outer conductor, the diameter of the rotor housing, and the diameter of the flange increase sequentially from the inside to the outside. The concentric rotor outer conductor is fitted inside the rotor housing. The rotor outer conductor contains a rotor inner conductor, and the space between the outer wall of the rotor inner conductor and the inner wall of the rotor outer conductor is filled with rotor end filler for insulation. The stator end includes a stator outer conductor and a stator inner conductor. The left middle part of the stator outer conductor A bearing is installed deep within the rotor housing, between the left outer wall of the stator outer conductor and the right inner wall of the rotor housing. An inner stator conductor is located within the outer stator conductor, and an insulating stator end filler is placed between the outer and inner walls of the inner stator conductor. The left end of the outer stator conductor contacts the right end of the rotor outer conductor, and the left end of the inner stator conductor contacts the right end of the rotor inner conductor. In use, the inner conductor of the rotating body connects to the rotor inner conductor, and its outer conductor connects to the rotor outer conductor. The inner conductor of the plug for the fixed equipment's RF signal transmission line connects to the stator inner conductor, and its outer conductor connects to the stator outer conductor, thus enabling the transmission of RF signals during rotation. When using the aforementioned structure to transmit two or more RF signals, the connector's size increases significantly, failing to meet miniaturization requirements.

[0004] (2) An electrical rotary connector is a type of connector capable of transmitting electrical signals while rotating. Please refer to [link to relevant documentation]. Figure 1 and Figure 2 It includes a housing 1 and a hollow shaft 2 whose rotation axis extends in the left-right direction. Both the housing and the hollow shaft are supported by metal materials. The housing includes a cylindrical body and a first cover plate 3 and a second cover plate 4 disposed on the left and right sides of the cylindrical body. Bearings 5 ​​are disposed between the first cover plate, the second cover plate and the hollow shaft. Please refer to the following: Figure 3 A plurality of conductive rings 6 are insulated along the left and right directions on the hollow shaft, and an insulating partition 7 connected to the hollow shaft is provided between two adjacent conductive rings. Please refer to the following: Figure 4The cavity between the housing and the hollow shaft contains several mounting plate components 8. Each mounting plate component includes a brush 801 for sliding contact with a corresponding conductive ring and a circuit board 802 for fixing the brush. The housing has wiring holes. In use, the first cable passes through the inside of the hollow shaft and connects to the conductive ring, and the second cable passes through the wiring holes and connects to the corresponding brush, thereby realizing the transmission of electrical signals during rotation. Although the aforementioned conventional structure of the electrical rotary connector can realize the transmission of multiple signals, it is only suitable for transmitting ordinary low-frequency signals. When it is necessary to transmit coaxial radio frequency signals, the inner conductor of the first radio frequency cable is connected to a conductive ring, and its outer conductor is connected to another adjacent conductive ring. The brush that slides in contact with a conductive ring is connected to the inner conductor of the second radio frequency cable, and the other brush that slides in contact with another conductive ring is connected to the outer conductor of the second radio frequency cable. The aforementioned radio frequency signal transmission method is similar to the ordinary wire transmission method. Since the housing and the hollow shaft are both ordinary open structures, the radio frequency signal is not protected by a shielding layer, which will cause the radio frequency signal to be subject to greater interference, and the speed will be greatly reduced or unable to meet the transmission of high-speed coaxial radio frequency signals at all. Summary of the Invention

[0005] To address the technical problem that existing rotary connectors cannot meet the transmission requirements of multiple high-speed coaxial radio frequency signals, the present invention aims to propose a high-frequency anti-interference rotary connector and a high-frequency anti-interference rotary connector assembly.

[0006] The objective of this invention is achieved through the following technical solution: a high-frequency anti-interference rotary connector, comprising a housing 1 and a hollow shaft 2 whose rotation axis extends in the left-right direction. A plurality of conductive rings 6 are insulatedly arranged on the hollow shaft in the left-right direction, and an insulating partition 7 connected to the hollow shaft is provided between adjacent conductive rings. A plurality of mounting plate components 8 are provided in the cavity between the housing and the hollow shaft. Each mounting plate component includes a circuit board 802 and a plurality of brush groups distributed on the circuit board in the left-right direction. Each brush group includes a plurality of brushes 801 for sliding contact with the corresponding conductive rings 6.

[0007] Multiple brushes 801 within the same brush group are connected by an inner copper layer 8021 disposed on the circuit board. Several brush groups that are adjacent in the left-right direction constitute a second cable connection group. The brush group in the middle of the same second cable connection group is used to connect the inner conductor of the second radio frequency cable. The remaining brush groups on both sides of the central brush group are used to connect the corresponding outer conductor of the second radio frequency cable. The brush groups connected to the same outer conductor are connected by an outer copper layer 8022 disposed on the circuit board to form a circumferentially closed outer shielding ring. Several outer shielding rings are radially distributed with the brush group connected to the inner conductor as the center. Several conductive rings 6 corresponding to the second cable connection group constitute a first cable connection group. A protrusion 601 is formed on the outer wall of the outermost conductive ring in the same first cable connection group, extending circumferentially. Several brush groups included in the second cable connection group are located between the two protrusions 601.

[0008] By employing the aforementioned technical solution, the present invention can achieve the following technical effects:

[0009] (1) When the power is on, the brush group connected to the same outer conductor is connected to conduction through the outer copper layer on the circuit board, and the brushes in the same brush group are connected to conduction through the inner copper layer on the circuit board to form a circumferentially closed outer shielding ring. Several outer shielding rings are radially distributed around the brush group connected to the inner conductor, which can simulate the corresponding coaxial cable structure and thus wrap and protect the coaxial radio frequency signal in transmission.

[0010] (2) The two outermost protrusions can simulate the outer shielding layer of the coaxial cable structure, avoid interference from external signals to the coaxial radio frequency signal, further protect the coaxial radio frequency signal, and thus meet the transmission requirements of high-speed coaxial radio frequency signal.

[0011] Furthermore, the outermost outer shielding ring in any two adjacent second cable connection groups is in a conductive state.

[0012] Furthermore, the conduction state is achieved as follows: at least one of the following methods is used: the two outermost brush groups in two adjacent second cable connection groups are connected via an outer copper layer 8022, and the two outermost brush groups in two adjacent second cable connection groups are connected via an inner copper layer 8021. This improves the efficiency of the copper plating process on the circuit board while satisfying coaxial RF signal protection requirements.

[0013] Furthermore, the two conductive rings 6 located on the outermost side of the two adjacent first cable connection groups are integrated, and a protrusion 601 is distributed between the two brush groups located on the outermost side of the two adjacent second cable connection groups. This measure can reduce the axial length of the hollow shaft and facilitate the miniaturization of the connector.

[0014] Furthermore, the protrusion 601 has a maze structure 6011 on its radially extending side surface, which can effectively filter clutter and interference signals.

[0015] Further specifying, one of the matching anti-rotation protrusion 602 and anti-rotation groove is disposed on the inner wall of the conductive ring 6, and the other is disposed on the outer wall of the hollow shaft 2.

[0016] Further defined, the brush group includes two brushes 801 arranged in a figure-eight pattern, and a plurality of brushes 801 are arranged on the circuit board 802 in two rows extending in the left-right direction and symmetrically distributed.

[0017] The present invention also achieves its objective by the following technical solution: a high-frequency anti-interference rotary connector assembly, comprising a first radio frequency cable and a second radio frequency cable, wherein both the first radio frequency cable and the second radio frequency cable comprise an inner conductor distributed from the inside out and several layers of outer conductors; further comprising a high-frequency anti-interference rotary connector, wherein a conductive ring 6 in the center of the first cable connection group is connected to the inner conductor of the first radio frequency cable passing through the hollow shaft 2, and the remaining conductive rings on both sides of the central conductive ring are connected to the corresponding layers of outer conductors of the first radio frequency cable; wherein a brush group in the center of the second cable connection group is connected to the inner conductor of the second radio frequency cable passing through the cavity, and the remaining brush groups on both sides of the central brush group are connected to the corresponding layers of outer conductors of the second radio frequency cable.

[0018] Further defined, both the first and second radio frequency cables include an inner conductor distributed from the inside out and an outer conductor; three brush groups adjacent in the left-right direction constitute the second cable connection group, and three conductive rings 6 adjacent in the left-right direction constitute the first cable connection group. The conductive ring 6 in the center of the first cable connection group is connected to the inner conductor of the first radio frequency cable, and the two conductive rings 6 on both sides are connected to the outer conductor of the first radio frequency cable. The brush group in the center of the second cable connection group is connected to the inner conductor of the second radio frequency cable, and the two brush groups on both sides are connected to the outer conductor of the second radio frequency cable.

[0019] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a conventional electrical rotary connector.

[0021] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0022] Figure 3 This is a schematic diagram of the conductive ring in a conventional electrical rotary connector.

[0023] Figure 4 This is a structural diagram of the mounting plate component in a conventional electrical rotary connector.

[0024] Figure 5 This is a schematic diagram of a high-frequency anti-interference rotary connector according to an embodiment of the present invention.

[0025] Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0026] Figure 7 This is an isometric view of the outermost conductive ring in Example 1.

[0027] Figure 8 This is a cross-sectional schematic diagram of the outermost conductive ring in Example 1.

[0028] Figure 9 This is a structural schematic diagram of the mounting plate component in Embodiment 1.

[0029] Wherein: 1-shell, 2-hollow shaft, 3-first cover plate, 4-second cover plate, 5-bearing, 6-conductive ring, 601-protrusion, 6011-maze structure, 602-anti-rotation protrusion, 7-insulating partition, 8-mounting plate component, 801-brush, 802-circuit board, 8021-inner copper clad layer, 8022-outer copper clad layer, 8023-outer shielding ring. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "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 this 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, they should not be construed as limitations on this invention.

[0032] Furthermore, the terms "first or I," "second or II," "third or III," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first or I," "second or II," or "third or III" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] Example 1

[0035] Please see Figure 5 This is a schematic diagram of a high-frequency anti-interference rotary connector according to an embodiment of the present invention. This embodiment includes a housing 1 and a hollow shaft 2 whose rotation axis extends in the left-right direction. The housing includes a cylindrical body and a first cover plate 3 and a second cover plate 4 disposed on the left and right sides of the cylindrical body. Bearings 5 ​​are disposed between the first cover plate, the second cover plate, and the hollow shaft. A plurality of conductive rings 6 are insulated along the left-right direction on the hollow shaft, and an insulating partition 7 connected to the hollow shaft is disposed between adjacent conductive rings. A plurality of mounting plate components 8 are disposed in the cavity between the housing and the hollow shaft. Each mounting plate component includes a plurality of brushes 801 for sliding contact with the corresponding conductive rings and a circuit board 802 for fixing the brushes. Wiring holes are provided on the housing. Please also refer to... Figure 5 Several brushes 801 are arranged in two rows on the circuit board 802, extending in the left and right direction and symmetrically distributed. The two brushes 801 on the two rows are arranged in a figure-eight shape.

[0036] Based on the aforementioned conventional structure, this embodiment defines two brushes arranged in a figure-eight pattern as a brush group. Please refer to [link to relevant documentation]. Figure 9 Two brushes 801 within the same brush group are connected and conductive via an inner copper layer 8021 disposed on the circuit board 802. Three brush groups adjacent in the left-right direction constitute a second cable connection group. The brush group on the left and the brush group on the right in the second cable connection group are connected and conductive via an outer copper layer 8022 disposed on the circuit board 802. The three conductive rings 6 corresponding to the aforementioned three brush groups form a first cable connection group. Please refer to [link / reference]. Figure 6 , Figure 7 and Figure 8 In the first cable connection group, protrusions 601 extend circumferentially from the outer wall of the conductive ring on the left and the outer wall of the conductive ring on the right. The three brush groups in the second cable connection group, corresponding to the first cable connection group, are located between the two protrusions 601. The conductive ring in the middle of the first cable connection group still uses... Figure 3 The structure shown is as follows. When transmitting coaxial radio frequency signals using the connector proposed in this embodiment, the first radio frequency cable inserted into the hollow shaft 2 and the second radio frequency cable inserted into the housing 1 through the wiring hole both include an inner conductor, an outer conductor, and an insulator located between the inner and outer conductors. The inner conductor of the first radio frequency cable is connected to the centrally located conductive ring 6 in the first cable connection group, and its outer conductor is connected to two conductive rings 6 located on the left and right sides in the same first cable connection group. The inner conductor of the second radio frequency cable is connected to the centrally located brush group in the second cable connection group, and its outer conductor is connected to two brush groups located on the left and right sides in the same second cable connection group. In the energized state, the two brush groups located on the left and right sides and connected to the outer conductor are short-circuited and conductive through the outer copper layer 8022, and the two brushes in each brush group are short-circuited and conductive through the inner copper layer 8021, together forming a circumferentially closed outer shielding ring 8023 (e.g., Figure 9 As shown, a brush group located in the middle and connected to the inner conductor is placed inside the aforementioned outer shielding ring to simulate the coaxial cable structure, thereby wrapping and protecting the coaxial radio frequency signal during transmission. At the same time, the two outermost protrusions 601 can simulate the outer shielding layer of the coaxial cable structure to avoid interference from external signals to the coaxial radio frequency signal, further protecting the coaxial radio frequency signal and thus meeting the transmission requirements of high-speed coaxial radio frequency signals.

[0037] As an extension of this embodiment, the outermost outer shielding ring in two adjacent second cable connection groups is in a conductive state. Specifically, two brush groups in adjacent second cable connection groups are connected through an outer copper layer 8022. For example, the brush group on the left side of one second cable connection group is connected to the brush group on the right side of another adjacent second cable connection group through an outer copper layer 8022. At the same time, the inner copper layer 8021 within the two outermost adjacent brush groups in two adjacent second cable connection groups is also connected and conductive. This measure, while satisfying coaxial RF signal protection, helps to improve the efficiency of the copper plating process on the circuit board. Of course, in other embodiments of the present invention, only the two brush groups can be connected through an outer copper layer, or only the inner copper layers within the two brush groups can be connected and conductive, still achieving the purpose of the outermost outer shielding ring in two adjacent second cable connection groups being in a conductive state.

[0038] As an extension of this embodiment, the two outermost and adjacent conductive rings 6 in two adjacent first cable connection groups are integrated (i.e., the two conductive rings are combined into one conductive ring). A protrusion 601 is distributed between the two outermost and adjacent brush groups in two adjacent second cable connection groups. For example, the conductive ring 6 on the left side of one first cable connection group and the conductive ring 6 on the right side of another adjacent first cable connection group are integrated. In this case, the protrusion 601 is located between the two adjacent brush groups corresponding to the aforementioned two conductive rings. That is, the two adjacent first cable connection groups share an outer shielding layer. This reduces the axial length of the hollow shaft and facilitates the miniaturization of the connector.

[0039] As an extension of this embodiment, the protrusion 601 is provided with a maze structure 6011 on its radially extending side, which can effectively filter clutter and interference signals.

[0040] As an extension of this embodiment, the inner wall of the conductive ring 6 is provided with an anti-rotation protrusion 602 and the outer wall of the hollow shaft 2 is provided with an anti-rotation groove that matches the aforementioned anti-rotation protrusion, so as to prevent the conductive ring and the hollow shaft from rotating relative to each other. Of course, the positions of the anti-rotation protrusion and the anti-rotation groove can also be interchanged.

[0041] Example 2

[0042] Both the first and second radio frequency cables include an inner conductor, a first outer conductor, and a second outer conductor distributed from the inside out. Insulators are provided between adjacent inner conductors and the first outer conductor, and between adjacent first outer conductors and the second outer conductor. To meet the aforementioned RF cable transmission requirements, this embodiment of a high-frequency anti-interference rotary connector differs from Embodiment 1 in that: five brush groups arranged adjacently in the left-right direction constitute a second cable connection group. In this second cable connection group, two brush groups connected to the first outer conductor (located between the central brush group and the outermost brush group) are connected via an outer copper layer 8022 on the circuit board 802. The two outermost brush groups (i.e., the leftmost and rightmost) connected to the second outer conductor are also connected via an outer copper layer 8022 on the circuit board 802. Five conductive rings 6 corresponding to the aforementioned five brush groups form a first cable connection group. In the first cable connection group, the outer walls of the two conductive rings that slide in contact with the two outermost brush groups each have a circumferentially extending protrusion 601. The five brush groups in the second cable connection group corresponding to the first cable connection group are located between the two protrusions 601. The remaining three conductive rings in the first cable connection group still use... Figure 3The structure is shown. When transmitting coaxial radio frequency signals using the connector proposed in this embodiment, the inner conductor of the first radio frequency cable is connected to the centrally located conductive ring 6 within the first cable connection group, its second outer conductor is connected to the two outermost conductive rings 6 within the same first cable connection group, and its first outer conductor is connected to the remaining two conductive rings 6 within the same first cable connection group. The inner conductor of the second radio frequency cable is connected to the centrally located brush group within the second cable connection group, its second outer conductor is connected to the two outermost brush groups within the same second cable connection group, and its first outer conductor is connected to the remaining two brush groups within the same second cable connection group. In the energized state, the two brush groups connected to the second outer conductor are connected via an outer copper-clad 802 layer. 2. A short-circuit conductive layer is formed by two brushes in each brush group being short-circuited through the inner copper layer 8021, forming a circumferentially closed second outer shielding ring located on the outermost side. Two brush groups connected to the first outer conductor are short-circuited through the outer copper layer 8022, and the two brushes in each brush group are short-circuited through the inner copper layer 8021, forming a circumferentially closed first outer shielding ring located inside the second outer shielding ring. A brush group located in the middle and connected to the inner conductor is placed inside the first outer shielding ring. The aforementioned two outer shielding rings are radially distributed with the brush group connected to the inner conductor as the center, simulating the corresponding coaxial cable structure, thereby wrapping and protecting the coaxial radio frequency signal during transmission.

[0043] Example 3

[0044] Both the first and second radio frequency cables include an inner conductor, a first-layer outer conductor, ..., an Nth-layer outer conductor distributed from the inside out. Insulators are provided between the inner conductor and the first-layer outer conductor, and between adjacent outer conductors. To meet the transmission requirements of the aforementioned radio frequency cables, this embodiment of a high-frequency anti-interference rotary connector differs from the first embodiment in that: (2N+1) brush groups arranged adjacently in the left-right direction constitute a second cable connection group. In the second cable connection group, the brush group is connected to the first... i Outer conductor (of which) i The two corresponding brush groups connected by (=1,2,···,N) are connected and conductive through the outer copper layer 8022 disposed on the circuit board 802. The (2N+1) conductive rings corresponding to the aforementioned (2N+1) brush groups form a first cable connection group. In the first cable connection group, the outermost two conductive rings connected to the outermost outer conductor each have a circumferentially extending protrusion 601 on their outer walls. The second cable connection group, corresponding to the first cable connection group, includes (2N+1) brush groups located between the aforementioned two protrusions 601. The remaining conductive rings in the first cable connection group still use... Figure 3 The structure shown. When transmitting coaxial radio frequency signals using the connector proposed in this embodiment, the inner conductor of the first radio frequency cable is connected to the conductive ring 6 centered in the first cable connection group, and its...i The outer conductor is connected to two corresponding conductive rings 6 symmetrically located on both sides of the centrally located conductive ring. The inner conductor of the second radio frequency cable is connected to the centrally located brush group within the second cable connection group. i The outer conductor is connected to two corresponding brush groups on either side of the symmetrically located brush group in the center. When energized, the two outermost brush groups connected to the Nth (i.e., the outermost) outer conductor are short-circuited through the outer copper 8022 layer, and the two brushes in each brush group are short-circuited through the inner copper 8021 layer, forming a circumferentially closed outer Nth layer outer shielding ring. From the outside to the inside, the (N-1)th outer shielding ring, ..., the first outer shielding ring, is formed inside the second outer shielding ring. A brush group located in the middle and connected to the inner conductor is placed inside the first outer shielding ring. The aforementioned N outer shielding rings are radially distributed around the brush group connected to the inner conductor, simulating the corresponding coaxial cable structure, thereby wrapping and protecting the transmitted coaxial radio frequency signal.

[0045] Based on any of the foregoing embodiments, the user can adjust the number of brushes included in the brush group as needed.

[0046] Based on any of the foregoing embodiments, an inner copper cladding layer and an outer copper cladding layer are formed by designing a protrusion of a certain thickness (e.g., 0.2 mm, but the present invention does not limit this thickness parameter) on the circuit board of the mounting plate component.

[0047] The above description is merely a preferred embodiment of the present invention. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the scope of the present invention and based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-frequency anti-interference rotary connector, comprising a housing (1) and a hollow shaft (2) with a rotating axis extending in left-right direction, a plurality of conductive rings (6) are arranged in left-right direction on the hollow shaft with insulation, and an insulating partition plate (7) connected to the hollow shaft is arranged between any two adjacent conductive rings, a plurality of mounting plate components (8) are arranged in the cavity between the housing and the hollow shaft, the mounting plate component comprises a circuit board (802) and a plurality of brush groups distributed on the circuit board in left-right direction, each brush group comprises a plurality of brushes (801) for sliding contact with a corresponding conductive ring (6), and a plurality of brushes are arranged on the circuit board in two rows extending in left-right direction and symmetrically distributed, and two corresponding brushes in the two rows form a brush group, characterized in that, Two brushes (801) in the same brush group are connected by inner layer copper cladding (8021) arranged on the circuit board, and (2N+1) brush groups in adjacent state in left-right direction constitute a second cable connection group, N is the number of outer conductors of the radio frequency cable, the brush group in the middle of the same second cable connection group is used for connecting the inner conductor of the second radio frequency cable, and the remaining brush groups on both sides of the brush group in the middle are used for connecting the corresponding layer outer conductor of the second radio frequency cable, and the brush groups connected with the same layer outer conductor are connected by outer layer copper cladding (8022) arranged on the circuit board to form a circumferentially closed outer shielding ring, and a plurality of outer shielding rings are distributed in a radial manner with the brush group connecting the inner conductor as the center; a plurality of conductive rings (6) corresponding to the second cable connection group constitute a first cable connection group, a protrusion (601) is formed in a circumferential direction on the outer wall of the conductive ring located at the outermost side in the same first cable connection group, and a plurality of brush groups included in the second cable connection group are located between the two protrusions (601).

2. A high frequency anti-jam rotating connector according to claim 1, wherein, The outer shielding rings located at the outermost side in the adjacent two second cable connection groups are in a conductive state.

3. A high frequency anti-jamming rotary joint according to claim 2, wherein, The realization mode of the conductive state is that at least one of the following modes is adopted: the two brush groups located at the outermost side and in an adjacent state in the adjacent two second cable connection groups are connected by the outer layer copper cladding (8022), and the inner layer copper cladding (8021) of the two brush groups located at the outermost side and in an adjacent state in the adjacent two second cable connection groups is connected.

4. A high frequency, anti-jamming rotary joint according to claim 1, wherein, The two conductive rings (6) located at the outermost side and in an adjacent state in the adjacent two first cable connection groups are integrated, and a protrusion (601) is distributed between the two brush groups located at the outermost side and in an adjacent state in the adjacent two second cable connection groups.

5. A high frequency, anti-jamming rotary joint according to claim 1, wherein, The side of the protrusion (601) extending in the radial direction is provided with a labyrinth structure (6011).

6. A high frequency anti-jam rotating connector according to any one of claims 1-5, wherein, One of the rotation-stopping protrusion (602) and the rotation-stopping groove is arranged on the inner wall of the conductive ring (6), and the other is arranged on the outer wall of the hollow shaft (2).

7. A high frequency anti-jamming rotary joint according to any one of claims 1-5, characterized in that, The corresponding two brushes (801) in the two rows are distributed in a spread-finger shape.

8. A high frequency, anti-jamming, rotary connector assembly comprising a first RF cable, a second RF cable, each of the first RF cable and the second RF cable comprising an inner conductor, a plurality of layers of outer conductors, distributed from inner to outer, characterized in that, Further comprising the high-frequency anti-interference rotary connector in any one of claims 1-7, the conductive ring (6) in the middle of the first cable connection group is connected with the inner conductor of the first radio frequency cable penetrating into the hollow shaft (2), and the remaining conductive rings on both sides of the conductive ring in the middle are connected with the corresponding layer outer conductor of the first radio frequency cable, and the brush group in the middle of the second cable connection group is connected with the inner conductor of the second radio frequency cable penetrating into the chamber, and the remaining brush groups on both sides of the brush group in the middle are connected with the corresponding layer outer conductor of the second radio frequency cable.

9. A high-frequency, anti-tamper, rotary connector assembly according to claim 8, wherein, The first radio frequency cable and the second radio frequency cable each comprise an inner conductor and an outer conductor distributed from inside to outside; three brush groups in adjacent state in the left-right direction constitute a second cable connection group, and three conductive rings (6) in adjacent state in the left-right direction constitute a first cable connection group, the middle conductive ring (6) in the first cable connection group is connected with the inner conductor of the first radio frequency cable, and the two conductive rings (6) on the two sides are connected with the outer conductor of the first radio frequency cable, and the middle brush group in the second cable connection group is connected with the inner conductor of the second radio frequency cable, and the two brush groups on the two sides are connected with the outer conductor of the second radio frequency cable.

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