High-frequency anti-interference rotary connector and high-frequency anti-interference rotary connector assembly

Abstract

The high-frequency anti-interference rotary connector comprises a plurality of conducting rings and a plurality of electric brush sets, electric brushes in the same electric brush set are connected through inner-layer clad copper, and the electric brush sets in the adjacent state form a second cable connection set. The central electric brush group in the second cable connection group is used for connecting an inner conductor of a second radio frequency cable, and the remaining electric brush groups at two sides of the central electric brush group are used for connecting an outer conductor of a corresponding layer of the second radio frequency cable, and the electric brush groups connected with the outer conductor of the same layer form an outer shielding ring through outer layer copper coating connection. The plurality of outer shielding rings are radially distributed by taking the electric brush group in the middle as a center, simulate a corresponding coaxial cable structure and wrap and protect coaxial radio frequency signals; protrusions are formed on the conducting ring located on the outermost side in the first cable connection set, the electric brush sets are located between the two protrusions, the two protrusions simulate an outer shielding layer of a coaxial cable structure, and interference of external signals on coaxial radio-frequency signals is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electric rotary connectors, and particularly relates to a high-frequency anti-interference rotary connector suitable for coaxial radio frequency signal transmission and a high-frequency anti-interference rotary connector assembly. BACKGROUND

[0002] With the development of weapon equipment, the demand for transmission of radio frequency signals is increasing, and in some scenarios, 6 or more radio frequency signals may be required. The existing connectors for transmitting radio frequency signals in a rotating state are divided into: (1) Radio frequency rotary connector, such as the Chinese utility model patent with application number 201721411402.6, which is composed of a rotor end and a stator end. The rotor end includes a flange, a rotor shell, a rotor outer conductor, and a rotor inner conductor. The flange, the rotor shell, and the rotor outer conductor are integrated. The diameter of the rotor outer conductor, the diameter of the rotor shell, and the diameter of the flange increase from inside to outside. The concentric rotor outer conductor is sleeved in the rotor shell. The rotor inner conductor is arranged in the rotor outer conductor, and the outer wall of the rotor inner conductor and the inner wall of the rotor outer conductor are filled with a 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 penetrates into the rotor shell, and a bearing is arranged between the left outer wall of the stator outer conductor and the right inner wall of the rotor shell. The stator inner conductor is arranged in the stator outer conductor, and the outer wall of the stator inner conductor and the inner wall of the stator outer conductor are filled with a stator end filler for insulation. The left end of the stator outer conductor is in contact with the right end of the rotor outer conductor, and the left end of the stator inner conductor is in contact with the right end of the rotor inner conductor. In use, the inner conductor of the rotating body is connected with the rotor inner conductor, and the outer conductor is connected with the rotor outer conductor. The plug of the fixed device radio frequency signal transmission line is connected with the stator inner conductor, and the outer conductor is connected with the stator outer conductor, thereby realizing the transmission of radio frequency signals in a rotating state. When the radio frequency rotary connector with the foregoing structure transmits 2 or more radio frequency signals, the volume of the connector will greatly increase, which cannot meet the requirement of miniaturization. (2) Electric rotary connector, which is a connector capable of transmitting electrical signals in a rotating state. Please refer to Figure 1 and Figure 2 , which includes a shell 1 and a hollow shaft 2 extending along the left-right direction. The shell and the hollow shaft are both supported by metal materials. The shell includes a cylindrical body and first and second cover plates 3 and 4 arranged on the left and right sides of the cylindrical body. Bearings 5 are arranged between the first and second cover plates and the hollow shaft. Please also refer to Figure 3 . A plurality of conductive rings 6 are arranged on the hollow shaft in the left-right direction and are insulated from each other. Insulating partitions 7 are arranged between adjacent conductive rings and are connected to the hollow shaft. Please also refer to Figure 4The cavity between the shell and the hollow shaft is provided with a plurality of mounting plate components 8, each of which comprises a brush 801 for sliding contact with a corresponding conductive ring, and a circuit board 802 for fixing the brush, and the shell is provided with a wiring hole, in use, a first cable is connected with the conductive ring after being inserted from the inside of the hollow shaft, and a second cable is connected with the corresponding brush after being inserted from the wiring hole, so as to realize the transmission of electrical signals in a rotating state. Although the electrical rotary connector with the foregoing conventional structure can realize the transmission of multiple signals, it is only suitable for transmitting ordinary low-frequency signals. When coaxial radio frequency signals need to be transmitted, the inner conductor of the first radio frequency cable is connected with one conductive ring, the outer conductor thereof is connected with another adjacent conductive ring, the brush in sliding contact with one conductive ring is connected with the inner conductor of the second radio frequency cable, and the other brush in sliding contact with another conductive ring is connected with the outer conductor of the second radio frequency cable. The foregoing radio frequency signal transmission mode is similar to the ordinary wire transmission mode. Since the shell and the hollow shaft are both ordinary open structures, the radio frequency signals are not protected by a shielding layer, which may cause the radio frequency signals to be greatly interfered, the speed may be greatly reduced, or the transmission of high-speed coaxial radio frequency signals cannot be met at all. SUMMARY

[0003] In view of the technical problem that the existing rotary connector cannot meet the transmission requirement of multiple high-speed coaxial radio frequency signals, the purpose of the present application is to provide a high-frequency anti-interference rotary connector and a high-frequency anti-interference rotary connector assembly.

[0004] The purpose of the present application is achieved by the following technical scheme: a high-frequency anti-interference rotary connector, comprising a shell 1 and a hollow shaft 2 extending along the left-right direction, a plurality of conductive rings 6 are insulatively arranged on the hollow shaft along the left-right direction, and an insulating partition plate 7 connected to the hollow shaft is arranged between adjacent two conductive rings, a plurality of mounting plate components 8 are arranged in the cavity between the shell and the hollow shaft, the mounting plate component comprises a circuit board 802 and a plurality of brush groups distributed on the circuit board along the left-right direction, the brush group comprises a plurality of brushes 801 for sliding contact with a corresponding conductive ring 6, The plurality of brushes 801 in the same brush group are connected by the inner layer copper cladding 8021 arranged on the circuit board, and a plurality of brush groups in the adjacent state in the left-right direction constitute a second cable connection group, the brush group in the middle in 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 the 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, the conductive ring in the outermost side in the same first cable connection group extends in the circumferential direction to form a protrusion 601, and the plurality of brush groups included in the second cable connection group are located between the two protrusions 601.

[0005] By means of the foregoing technical scheme, the present application can achieve the following technical effects: (1) The brush groups connected with the same layer outer conductor in the power-on state are connected by the outer layer copper cladding arranged on the circuit board, the brushes in the same brush group are connected by the inner layer copper cladding 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, which can simulate the structure of the corresponding coaxial cable to protect the coaxial radio frequency signal in transmission; (2) The two protrusions in the outermost side can simulate the outer shielding layer of the coaxial cable structure to avoid the interference of external signals on the coaxial radio frequency signal, further protect the coaxial radio frequency signal, and further meet the transmission requirements of high-speed coaxial radio frequency signals.

[0006] Further limited, the outer shielding rings in the outermost side in the adjacent two second cable connection groups are in a conductive state.

[0007] Further limited, the implementation manner of the conductive state is that the two brush groups in the outermost side and in the adjacent state in the adjacent two second cable connection groups are connected by the outer layer copper cladding 8022, and at least one of the inner layer copper cladings 8021 connecting the two brush groups in the outermost side and in the adjacent state in the adjacent two second cable connection groups. This helps to improve the efficiency of the copper cladding process on the circuit board under the premise of meeting the protection of the coaxial radio frequency signal.

[0008] Further limited, the two conductive rings 6 in the outermost side and in the adjacent state in the adjacent two first cable connection groups are integrated, and a protrusion 601 is distributed between the two brush groups in the outermost side and in the adjacent state in the adjacent two second cable connection groups, which can reduce the axial length of the hollow shaft and facilitate the miniaturization of the connector.

[0009] Further limited, the convex 601 is provided with a labyrinth structure 6011 on the side extending in the radial direction, and the labyrinth structure can effectively filter noise and interference signals.

[0010] Further limited, one of the matched rotation-stopping convex 602 and 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.

[0011] Further limited, the brush group includes two brushes 801 in a spread-eagle type, 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.

[0012] The purpose of the application is also achieved by the following technical scheme: a high-frequency anti-interference rotary connector assembly, comprising a first radio frequency cable and a second radio frequency cable, the first radio frequency cable and the second radio frequency cable each include an inner conductor and a plurality of layers of outer conductors distributed from inside to outside; further comprising a high-frequency anti-interference rotary connector, the central conductive ring 6 in 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 central conductive ring are connected with the corresponding layer of outer conductors of the first radio frequency cable, and the central brush group in 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 central brush group are connected with the corresponding layer of outer conductors of the second radio frequency cable.

[0013] Further limited, the first radio frequency cable and the second radio frequency cable each include an inner conductor and an outer conductor distributed from inside to outside; three brush groups in an adjacent state in the left-right direction constitute a second cable connection group, and three conductive rings 6 in an adjacent state in the left-right direction constitute a first cable connection group, the central 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 both sides are connected with the outer conductor of the first radio frequency cable, and the central 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 both sides are connected with the outer conductor of the second radio frequency cable.

[0014] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a conventional electric rotary connector.

[0016] Figure 2 It is Figure 1 An enlarged schematic view of A in FIG.

[0017] Figure 3 This is a schematic diagram of the conductive ring in a conventional electrical rotary connector.

[0018] Figure 4 This is a structural diagram of the mounting plate component in a conventional electrical rotary connector.

[0019] Figure 5 This is a schematic diagram of a high-frequency anti-interference rotary connector according to an embodiment of the present invention.

[0020] Figure 6 yes Figure 5 Enlarged diagram of point B in the middle.

[0021] Figure 7 This is an isometric view of the outermost conductive ring in Example 1.

[0022] Figure 8 This is a cross-sectional schematic diagram of the outermost conductive ring in Example 1.

[0023] Figure 9 This is a structural schematic diagram of the mounting plate component in Embodiment 1.

[0024] 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

[0025] 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.

[0026] 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.

[0027] In addition, the terms "first" or "I", "second" or "II", "third" or "III" and the like are used merely to distinguish one element from another, and do not imply a relative importance or a specific number of the indicated technical features. Thus, a feature defined with "first", "second", "third" or the like can include one or more of the feature. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0028] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Embodiment one Please refer to Figure 5 , it is a structural schematic diagram of one embodiment of high-frequency anti-interference rotary connector of the present application. The embodiment includes a shell 1 and a hollow shaft 2 extending along the left-right direction, the shell includes a cylindrical body and a first cover plate 3 and a second cover plate 4 arranged on the left and right sides of the cylindrical body, the first cover plate, the second cover plate and the hollow shaft are provided with bearings 5, a plurality of conductive rings 6 are arranged on the hollow shaft in the left-right direction and insulated, and an insulating partition plate 7 connected to the hollow shaft is arranged between adjacent two conductive rings, a plurality of mounting plate components 8 are arranged in the cavity between the shell and the hollow shaft, each mounting plate component includes a plurality of brushes 801 for sliding contact with the corresponding conductive ring and a circuit board 802 for fixing the brush. The shell is provided with a wiring hole. Please refer to Figure 5 , the plurality of brushes 801 are arranged on the circuit board 802 in two rows extending along the left-right direction and symmetrically distributed, and the corresponding two brushes 801 in the two rows are distributed in an eight-shaped manner.

[0030] On the basis of the foregoing conventional structure, the embodiment defines two brushes distributed in an eight-shaped manner as one brush group, please refer to Figure 9 , the two brushes 801 in the same brush group are connected and conducted through the inner layer copper foil 8021 arranged on the circuit board 802, and the three brush groups in the left-right direction are connected and conducted through the outer layer copper foil 8022 arranged on the circuit board 802, and the three conductive rings 6 corresponding to the three brush groups form a first cable connection group, please refer to Figure 6 、 Figure 7 and Figure 8In 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.

[0031] 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.

[0032] As an extension of the embodiment, the two conductive rings 6 at the outermost and adjacent positions in the two adjacent first cable connection groups are integrated (i.e., the two conductive rings are combined into one conductive ring), and a protrusion 601 is arranged between the two brush groups at the outermost and adjacent positions in the two adjacent second cable connection groups, for example, the conductive ring 6 at the left side in a first cable connection group is integrated with the conductive ring 6 at the right side in the adjacent first cable connection group, and the protrusion 601 is arranged between the two adjacent brush groups corresponding to the two conductive rings, that is, the two adjacent first cable connection groups share one outer shielding layer, which reduces the axial length of the hollow shaft and facilitates the miniaturization of the connector.

[0033] As an extension of the embodiment, the protrusion 601 is provided with a labyrinth structure 6011 on the side extending in the radial direction, and the labyrinth structure can effectively filter noise and interference signals.

[0034] As an extension of the embodiment, a rotation-stopping protrusion 602 is arranged on the inner wall of the conductive ring 6, and a rotation-stopping groove matched with the rotation-stopping protrusion is arranged on the outer wall of the hollow shaft 2, so as to avoid relative rotation of the conductive ring and the hollow shaft. Of course, the positions of the rotation-stopping protrusion and the rotation-stopping groove can be transposed.

[0035] Embodiment two The first radio frequency cable and the second radio frequency cable each include an inner conductor, a first layer of outer conductors, and a second layer of outer conductors distributed from inside to outside, and an insulator is arranged between adjacent inner conductors and first layer of outer conductors and between adjacent first layer of outer conductors and second layer of outer conductors. To meet the transmission requirements of the radio frequency cable, one difference between the high-frequency anti-interference rotary connector of the embodiment and the embodiment one is that five brush groups in the adjacent state in the left-right direction form a second cable connection group, two brush groups (located between the central brush group and the outermost brush group) connected with the first layer of outer conductors in the second cable connection group are connected and conducted through the outer layer of copper 8022 arranged on the circuit board 802, the two brush groups at the outermost (i.e., the leftmost and the rightmost) connected with the second layer of outer conductors are also connected and conducted through the outer layer of copper 8022 arranged on the circuit board 802, and five conductive rings 6 corresponding to the five brush groups form a first cable connection group, the outer walls of the two conductive rings in sliding contact with the two brush groups at the outermost in the first cable connection group each extend in the circumferential direction to form a protrusion 601, and the second cable connection group corresponding to the first cable connection group includes five brush groups between the two protrusions 601, and the remaining three conductive rings in the first cable connection group still adopt the structure of the embodiment one. Figure 3The connector according to the embodiment is used to transmit coaxial radio frequency signals, the inner conductor of the first radio frequency cable is connected with the middle conductive ring 6 in the first cable connection group, the second layer outer conductor is connected with the two outermost conductive rings 6 in the first cable connection group, and the first layer outer conductor is connected with the remaining two conductive rings 6 in the first cable connection group; the inner conductor of the second radio frequency cable is connected with the middle brush group in the second cable connection group, the second layer outer conductor is connected with the two outermost brush groups in the second cable connection group, and the first layer outer conductor is connected with the remaining two brush groups in the second cable connection group; in the conducting state, the two brush groups connected with the second layer outer conductor are connected through the outer layer copper 8022 and the two brushes in each brush group are connected through the inner layer copper 8021, and the two brush groups form a second layer outer shielding ring which is circumferentially closed and located at the outermost position; the two brush groups connected with the first layer outer conductor are connected through the outer layer copper 8022 and the two brushes in each brush group are connected through the inner layer copper 8021, and the two brush groups form a first layer outer shielding ring which is circumferentially closed and located inside the second layer outer shielding ring; the brush group located at the middle position and connected with the inner conductor is arranged in the first layer outer shielding ring; the two outer shielding rings are distributed radially around the brush group connected with the inner conductor, and the structure is simulated to the corresponding coaxial cable structure, so as to protect the coaxial radio frequency signals in transmission.

[0036] Embodiment three The first radio frequency cable and the second radio frequency cable each include an inner conductor, a first layer outer conductor, a second layer outer conductor, and an Nth layer outer conductor which are distributed from inside to outside, and an insulator is arranged between the inner conductor and the first layer outer conductor and between adjacent two layer outer conductors. In order to meet the transmission requirements of the radio frequency cable, the high-frequency anti-interference rotary connector according to the embodiment is different from the embodiment one in that (2N+1) brush groups in the adjacent state in the left-right direction form a second cable connection group, and the corresponding two brush groups connected with the first layer outer conductor (wherein n = 1, 2,..., N) in the second cable connection group are connected and conducted through the outer layer copper 8022 arranged on the circuit board 802; (2N+1) conductive rings corresponding to the (2N+1) brush groups form a first cable connection group, and the outer walls of the outermost two conductive rings connected with the outermost outer conductor in the first cable connection group are each circumferentially extended to form a protrusion 601, the (2N+1) brush groups included in the second cable connection group corresponding to the first cable connection group are located between the two protrusions 601, and the remaining conductive rings in the first cable connection group still adopt the structure shown in the figure. i i The (2N+1) brush groups in the adjacent state in the left-right direction form a second cable connection group, and the corresponding two brush groups connected with the first layer outer conductor (wherein n = 1, 2,..., N) in the second cable connection group are connected and conducted through the outer layer copper 8022 arranged on the circuit board 802; (2N+1) conductive rings corresponding to the (2N+1) brush groups form a first cable connection group, and the outer walls of the outermost two conductive rings connected with the outermost outer conductor in the first cable connection group are each circumferentially extended to form a protrusion 601, the (2N+1) brush groups included in the second cable connection group corresponding to the first cable connection group are located between the two protrusions 601, and the remaining conductive rings in the first cable connection group still adopt the structure shown in the figure. Figure 3 The connector according to the embodiment is used to transmit coaxial radio frequency signals, the inner conductor of the first radio frequency cable is connected with the middle conductive ring 6 in the first cable connection group, the second layer outer conductor is connected with the two outermost conductive rings 6 in the first cable connection group, and the first layer outer conductor is connected with the remaining two conductive rings 6 in the first cable connection group; the inner conductor of the second radio frequency cable is connected with the middle brush group in the second cable connection group, the second layer outer conductor is connected with the two outermost brush groups in the second cable connection group, and the first layer outer conductor is connected with the remaining two brush groups in the second cable connection group; in the conducting state, the two brush groups connected with the second layer outer conductor are connected through the outer layer copper 8022 and the two brushes in each brush group are connected through the inner layer copper 8021, and the two brush groups form a second layer outer shielding ring which is circumferentially closed and located at the outermost position; the two brush groups connected with the first layer outer conductor are connected through the outer layer copper 8022 and the two brushes in each brush group are connected through the inner layer copper 8021, and the two brush groups form a first layer outer shielding ring which is circumferentially closed and located inside the second layer outer shielding ring; the brush group located at the middle position and connected with the inner conductor is arranged in the first layer outer shielding ring; the two outer shielding rings are distributed radially around the brush group connected with the inner conductor, and the structure is simulated to the corresponding coaxial cable structure, so as to protect the coaxial radio frequency signals in transmission. i ​The outer conductor of the layer is connected to the corresponding two conductive rings 6 symmetrically located on both sides of the conductive ring in the middle, the inner conductor of the second radio frequency cable is connected to the brush group in the middle of the second cable connection group, and the first i The outer conductor of the layer is connected to the corresponding two conductive rings 6 symmetrically located on both sides of the conductive ring in the middle, the inner conductor of the second radio frequency cable is connected to the brush group in the middle of the second cable connection group, and the first

[0037] On the basis of any of the foregoing embodiments, the user can adjust the number of brushes included in the brush group as needed.

[0038] On the basis of any of the foregoing embodiments, a certain thickness (for example, 0.2 mm, but the present application does not limit this thickness parameter) of the protrusion is designed on the circuit board of the mounting plate component to form the inner copper layer and the outer copper layer.

[0039] The above is only a preferred embodiment of the present application, and any skilled person in the art can make any simple modification, equivalent change and modification to the above embodiment according to the technical essence of the present application without departing from the scope of the technical solution of the present application.

Claims

1. A high-frequency anti-interference rotary connector, comprising a housing (1) and a hollow shaft (2) with its rotation axis extending in the left-right direction, wherein a plurality of conductive rings (6) are insulatedly disposed 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, and a plurality of mounting plate components (8) are provided in the cavity between the housing and the hollow shaft, wherein the mounting plate components include a circuit board (802) and a plurality of brush groups distributed on the circuit board in the left-right direction, wherein the brush groups include a plurality of brushes (801) for sliding contact with the corresponding conductive rings (6), characterized in that, Multiple brushes (801) in the same brush group are connected by an inner copper layer (8021) on the circuit board. Several brush groups that are adjacent in the left and 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 brush group in the middle 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) 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).

2. The high-frequency anti-interference rotary connector according to claim 1, characterized in that, The outermost outer shielding ring in the two adjacent second cable connection groups is in a conductive state.

3. A high-frequency anti-interference rotary connector according to claim 2, characterized in that, The conduction state is achieved by connecting at least one of the following: the two brush groups located on the outermost side of the two adjacent second cable connection groups are connected by the outer copper layer (8022), and the two brush groups located on the outermost side of the two adjacent second cable connection groups are connected by the inner copper layer (8021).

4. A high-frequency anti-interference rotary connector according to claim 1, characterized in that, 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.

5. A high-frequency anti-interference rotary connector according to claim 1, characterized in that, The protrusion (601) has a maze structure (6011) on its radially extending side.

6. A high-frequency anti-interference rotary connector according to any one of claims 1-5, characterized in that, One of the matching anti-rotation protrusions (602) and anti-rotation grooves is located on the inner wall of the conductive ring (6) and the other is located on the outer wall of the hollow shaft (2).

7. A high-frequency anti-interference rotary connector according to any one of claims 1-5, characterized in that, The brush group includes two brushes (801) arranged in a figure-eight shape, and a plurality of brushes (801) are arranged in two rows on a circuit board (802) extending in the left and right directions and symmetrically distributed.

8. A high-frequency anti-interference rotary connector assembly, comprising a first radio frequency cable and a second radio frequency cable, wherein both the first and second radio frequency cables include an inner conductor distributed from the inside out and several layers of outer conductors, characterized in that, It also includes a high-frequency anti-interference rotary connector as described in any one of claims 1-7, wherein the central conductive ring (6) in 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 outer conductors of the first radio frequency cable; the central brush group in 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 outer conductors of the second radio frequency cable.

9. A high-frequency anti-interference rotary connector assembly according to claim 8, characterized in that, Both the first and second radio frequency cables include an inner conductor distributed from the inside out and an outer conductor. Three brush groups that are adjacent in the left-right direction constitute the second cable connection group. Three conductive rings (6) that are adjacent in the left-right direction constitute the first cable connection group. The conductive ring (6) in the middle 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 middle 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.

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