Closed type ring fixed type guiding and distributing signal device

Abstract

The application provides a closed type stacked ring fixed type guide and distribution electric signal device, and relates to the technical field of electric signal transmission. The device comprises a cylinder, a central shaft, a plurality of isolation rings which are arranged on the central shaft at equal intervals, an insulating ring which is arranged on the part between two isolation rings of the central shaft, a conductive ring which is arranged on each insulating ring and embedded into the insulating ring, and a contact wire which conducts the electric signal of the corresponding conductive ring to the outside of the cylinder. The device adopts a non-contact labyrinth seal design between the moving ring and the static ring, and improves the working reliability of the transmission electric signal of the radar antenna and the photoelectric detector turntable.

Description

Technical Field

[0001] This invention relates to the field of electrical signal transmission technology, and in particular to a closed-loop fixed conductor electrical signal device. Background Technology

[0002] With the widespread adoption of information-based situational awareness, high-precision, all-weather omnidirectional sensors are increasingly used, leading to more stringent requirements for conductive signal conductors than before. This type of conductor can stably transmit multiple frequencies (medium frequency, low frequency, weak current), and high current signals to various high-precision sensors operating in all directions during rotation or performing limited-range tracking motion at a specific angle. Currently, most rotating conductive signal conductors are manufactured using the following methods: 1. Designing a conductive busbar for transmitting a single fixed-frequency signal; 2. Insulating adhesive is injected into the conductive rings and isolation rings under vacuum for curing and fastening, followed by machining to the required structural dimensions and dimensional accuracy; 3. After assembly, the transmission performance is tested to confirm compliance, but cannot be adjusted or changed. This type of conductor has drawbacks: single-signal transmission, low current transmission, low voltage isolation, complex and difficult-to-operate process of injecting insulating adhesive between rings, low reliability in long-term high-temperature and high-humidity environments, requiring regular maintenance, and heavy overall system weight. Currently, commonly used radar antennas and photoelectric detectors with rotating conductor electrical signal devices have the following defects or shortcomings:

[0003] (1) Currently, the conductive ring and insulating ring of the conductive busbar device are open spaces, so only a single narrow frequency band electrical signal can be transmitted. When the turntable requires the transmission of multiple wide frequency band electrical signals, it cannot meet the requirements of miniaturization and modularization of the conductive busbar device, which directly affects the spatial applicability of radar and photoelectric detector systems.

[0004] (2) Currently, the conductive ring and insulating ring of the conductive busbar are fixed by injecting insulating glue. Because the glue carries air bubbles during the injection process, the uneven cooling of the glue makes it difficult for the air bubbles to escape. When the conductive busbar works in a high temperature, high humidity and high voltage environment, the insulation performance between the rings will be greatly reduced, which will directly affect the reliability of radar and photoelectric detection systems.

[0005] (3) The above-mentioned problems of the current conductive busbar devices affect the processing, assembly, debugging and delivery cycle to a certain extent, and also affect the working stability of the high-precision detector system. Therefore, it is technically necessary to invent this closed-type stacked ring fixed conductive busbar signal device. Summary of the Invention

[0006] To address the aforementioned issues, this invention provides a closed-loop stacked fixed conductor signal device. This device employs a non-contact labyrinth seal design between the moving and stationary rings, self-locking threaded stacking and fixing of the conductive and isolation rings, and measures to achieve wide-band, high-current, and high-voltage insulation-free transmission of the conductive circuit. These measures improve the reliability of the transmitted electrical signals in radar antennas and photodetector turntables, making it adaptable to various installation platforms and working environments, and enabling modularization and miniaturization.

[0007] The purpose of this invention is to provide a closed-loop fixed conductor signaling device, comprising:

[0008] A cylindrical body, wherein an upper end cap and a bottom end cap are respectively provided at both ends of the cylindrical body;

[0009] A central shaft passes through the cylinder and is rotatably connected to the upper end cover and the bottom end cover, wherein the central shaft is a hollow shaft.

[0010] Multiple isolation rings are equally spaced on the central shaft;

[0011] An insulating ring is fitted on the portion of the central shaft located between each pair of isolation rings;

[0012] Each of the insulating rings is fitted with a conductive ring, and the conductive ring is embedded in the insulating ring;

[0013] The inner side of each conductive ring is connected to a cable running through the central shaft via a wire that passes through the insulating ring and the central shaft in sequence.

[0014] The inner side of the cylinder is provided with contact wires at the positions corresponding to each conductive ring. One end of each contact wire is in contact with the corresponding conductive ring, and the other end is installed on the brush wire bracket set in the cylinder. Each contact wire conducts the electrical signal of the corresponding conductive ring to the outside of the cylinder.

[0015] Preferably, each of the isolation rings is fitted with a plurality of ring bodies; the sidewall of each isolation ring extends to the inner wall of the cylinder to which the fitted ring body is embedded, and the inner wall of the cylinder is provided with a groove for embedding the ring body; wherein, a certain gap is left between each ring body and the corresponding groove.

[0016] Preferably, a limiting ring is fixedly sleeved on the central axis near the bottom end cover, and the limiting ring is in contact with the isolation ring near the bottom end cover;

[0017] The central shaft is located near the upper end cover and is threaded with a locking nut, which is in contact with the isolation ring near the upper end cover;

[0018] The locking nut is used to fasten the equally spaced isolation rings sleeved on the central shaft between the limiting ring and the locking ring, as well as the insulating rings between each pair of isolation rings.

[0019] Preferably, two adjacent contact wires are respectively disposed on both sides of the cylinder.

[0020] Preferably, a through hole is provided on the side wall of the cylinder at the position corresponding to each contact wire.

[0021] Each of the through holes is equipped with a bristle holder;

[0022] Each of the through holes is provided with a protective sleeve on the outside, one end of the protective sleeve is abutted to the outer edge of the through hole, and the other end is covered with a protective plate;

[0023] Each of the protective plates is provided with a socket, which is electrically connected to the corresponding contact wire;

[0024] Each of the contact wires conducts the electrical signal of the corresponding conductive ring to the corresponding socket.

[0025] Preferably, the outer surface of the cylinder is covered with side plates.

[0026] Preferably, both ends of the central shaft are rotatably connected to the upper end cover and the lower end cover via sleeved high-precision fully sealed bearings.

[0027] Preferably, each conductive ring is provided with two contact wires at a position corresponding to the inner side wall of the cylinder, and the same end of the two contact wires contacts the corresponding conductive ring in opposite directions.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] This invention provides a closed-loop, fixed-type conductive signal device. By using conductive rings spaced apart on a central shaft and isolating adjacent conductive rings with isolation rings, the electrical signal transmitted from each conductive ring to the contact wire forms a closed isolation cavity. This increases the frequency of the transmitted signal, enhances the isolation between rings, and increases the voltage insulation between rings. This device can be directly installed in turntables such as radar antennas and photodetectors, achieving highly reliable and stable transmission of electrical signals under all-weather, multi-frequency, high-current, and high-voltage insulation conditions. The circuit transmission path of this device enables the conduction of electrical signals between rotating and stationary components. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the closed-loop fixed conductor signal device provided by the present invention.

[0031] Figure 2A partial cross-sectional view of the device provided by the present invention from the left side.

[0032] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle. Detailed Implementation

[0033] The following describes several specific embodiments of the present invention in detail, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0034] This invention provides a closed-loop, fixed-type conductive signal device for realizing the working function of a rotating motion electrical signal. It addresses the shortcomings of existing technologies, improves the performance of radar antennas and photoelectric detection sensors to meet the requirements of high-precision, high-reliability, and stable transmission of rotating motion electrical signals, adapts to various installation platforms, and is low-cost, highly efficient, and easy to operate.

[0035] To address the problems of existing technologies, this invention employs a design consisting of components including an upper end cover, a high-precision fully sealed bearing, a self-locking nut, an isolation ring, a brush holder, an insulating ring, a conductive ring, an outer sleeve, a bottom end cover, a central shaft, a cable, a socket, a protective sleeve, contact wires, a protective plate, and a conductor. This invention provides a wide frequency range for transmitting electrical signals (0–200 MHz), can transmit large currents (30 A), has high inter-ring high-voltage insulation (500 V without breakdown), and high reliability in high-temperature and high-humidity operating environments (10 million revolutions of operation). Furthermore, by configuring different adapter plates, this device can connect to various radar antennas and photoelectric detectors, achieving a highly modular design.

[0036] This invention relates to a closed-loop, fixed-type conductive signaling device with small axial / radial dimensions, lightweight structure, and convenient assembly and debugging. It is a self-contained system, providing protection against rain, dust, mold, and salt spray corrosion. It is fully sealed, maintenance-free throughout its lifespan, has a neat and aesthetically pleasing appearance, is safe and reliable, and easy to maintain. It perfectly meets the high-performance, stable electrical signal transmission requirements of radar antennas and photoelectric detection sensors. It is expected to bring greater economic and social benefits in the future and has broad application prospects.

[0037] Example

[0038] A closed-loop fixed conductor signaling device, see [link / reference]. Figures 1-3As shown, the device includes a cylindrical body 9 and a central shaft 11. The cylindrical body 9 has an upper end cap 1 and a bottom end cap 10 at its two ends. The central shaft 11 passes through the cylindrical body 9 and is rotatably connected to the upper end cap 1 and the bottom end cap 10. The central shaft 11 is a hollow shaft. Multiple isolation rings 4 are evenly spaced on the central shaft 11. Insulating rings 6 are fitted on the portions of the central shaft 11 between each pair of isolation rings 4. A conductive ring 7 is fitted on each insulating ring 6, and the conductive ring 7 is embedded within the insulating ring 6. The inner side of each conductive ring 7 is connected to a cable 12 passing through the central shaft 11 via a wire that passes through the insulating ring 6 and the central shaft 11 sequentially. A contact wire 15 is provided on the inner side of the cylindrical body 9 at the position corresponding to each conductive ring 7. One end of each contact wire 15 contacts the corresponding conductive ring 7, and the other end is installed on a brush filament support 5 of the cylindrical body 9. Each contact wire 15 transmits the electrical signal of the corresponding conductive ring 7 to the outside of the cylindrical body 9.

[0039] To address this, the present invention fixes the upper end cover 1 to the fixed component of the radar turntable. The rotating component of the turntable is passively rotated by a fork connected to the central shaft 11. The rotation of the central shaft 11 drives the isolation ring 4, insulating ring 6, and conductive ring 7 on the shaft to rotate synchronously. When a current signal is transmitted from the rotating component on the turntable through the cable 12, the transmission path of the electrical signal is through the cable 12 to the conductive ring 7. The conductive ring 7 then transmits the signal to the outside of the cylinder through the contact wire 15 on the fixed brush filament support 5. The present invention mainly uses the spaced conductive rings on the central shaft and the isolation rings between adjacent conductive rings to form a closed isolation cavity for the electrical signal transmitted from each conductive ring to the contact wire, thereby increasing the frequency of the transmitted signal, increasing the isolation between the rings, and increasing the voltage insulation between the rings. This device can be directly installed in the turntable of radar antennas, photodetectors, etc., to achieve highly reliable and stable transmission of electrical signals, high current, and high voltage insulation in all weather conditions. The circuit transmission path of this device enables the conduction of electrical signals between the rotating component and the fixed component. In this embodiment, the contact wire used is a brush wire, which is mainly used to transmit the electrical signal transmitted by the rotating conductive ring to the static electrical signal output terminal.

[0040] It should be noted that both ends of the central shaft 11 are rotatably connected to the upper end cover 1 and the bottom end cover 10 via high-precision fully sealed bearings 2, thus achieving the rotatable connection of the central shaft 11. The central shaft and the cylinder are on the same axis, ensuring stable operation of the central shaft. Furthermore, the inner side of each conductive ring 7 is connected to the cable 12 running through the central shaft 11 via wires that pass sequentially through the insulating ring 6 and the central shaft 11; therefore, through holes are provided on each insulating ring and the central shaft for the wires to pass through.

[0041] See Figure 3As shown, each isolation ring 4 is fitted with multiple ring bodies 41; the sidewall of each isolation ring 4 extends to the inner wall of the cylinder 9 where the fitted ring body 41 is embedded; the inner wall of the cylinder 9 has a groove for embedding the ring body 41; a certain gap is left between each ring body 41 and the corresponding groove. This further enables the electrical signal transmitted from the conductive ring between two isolation rings to the contact wire to form a closed isolation cavity, avoiding interference between adjacent conductive rings, thereby effectively improving the frequency of the transmitted signal. In addition, multiple ring bodies 41 are fitted outside the isolation ring 4 and embedded into the inner wall of the cylinder 9, forming a non-contact labyrinth seal structure between the cylinder and the isolation ring, capable of transmitting wideband electrical signals from 0 to 200 MHz and conducting large currents up to 30 A. In this embodiment, the isolation ring is machined from a high-polymer non-metallic material. The isolation ring has a certain thickness, and the multiple ring bodies fitted on the isolation ring are machined into a single piece. Specifically, an isolation ring is fitted with a ring body near the front and a ring body near the back, and the two ring bodies are machined into one piece with the isolation ring.

[0042] A limiting ring 8 is fixedly sleeved on the central shaft 11 near the bottom end cover 10, and the limiting ring 8 is in contact with the isolation ring 4 near the bottom end cover 10. A locking nut 3 is threadedly connected to the central shaft 11 near the upper end cover 1, and the locking nut 3 is in contact with the isolation ring 4 near the upper end cover 1. The locking nut 3 is used to tighten the equally spaced isolation rings 4 sleeved on the central shaft 11 between the limiting ring 8 and the insulating rings 6 between each pair of isolation rings 4. For this purpose, the equally spaced isolation rings 4 sleeved on the central shaft 11 and the insulating rings 6 between each pair of isolation rings 4 are tightened between the locking nut and the limiting ring 8 by the locking nut 3. It should be noted that although the isolation rings and insulating rings are sleeved on the central shaft, in order to prevent the isolation rings and insulating rings from shifting when the central shaft rotates, the locking nut is used to tighten the isolation rings 4 between them and the limiting ring 8 and the insulating rings 6 between each pair of isolation rings 4. The locking nut 3 is used to connect and self-lock the components on the central shaft, realizing the function of self-locking and fastening the isolation ring, conductive ring, insulating ring, etc. The purpose is to maintain the insulation between the rings when the circuit is subjected to high voltage (500V) in a high-temperature and high-humidity working environment, ensuring that the device is not broken down by high voltage. In actual processing, the limiting ring and the central shaft can be machined into one piece.

[0043] In this embodiment, two adjacent contact wires 15 are respectively arranged on both sides of the cylinder 9, that is, the contact wires that are in contact with the two adjacent conductive rings are respectively arranged on both sides of the cylinder 9, so as to avoid the two adjacent conductive rings from interfering with each other when transmitting electrical signals.

[0044] To enable each contact wire to conduct the electrical signal of its corresponding conductive ring to the outside of the cylinder, through holes are provided on the side wall of the cylinder 9 at the positions corresponding to each contact wire 15. A brush filament support 5 is installed in each through hole. A protective sleeve 17 is provided on the outside of each through hole, with one end of the sleeve 17 abutting the outer edge of the through hole and the other end covered by a protective plate 14. Each protective plate 14 has a socket 13, which is electrically connected to the corresponding contact wire 15. Each contact wire 15 conducts the electrical signal of its corresponding conductive ring 7 to the corresponding socket 13. Therefore, the electrical signal transmitted on the conductive ring is first transmitted to the contact wire, and then to the socket, thus achieving the conduction of the conductive ring's electrical signal to the outside of the cylinder. The brush filament support 5 is installed in each through hole, and the brush filament support 5 can also extend between two isolation rings to ensure good contact between the contact wire and the conductive ring.

[0045] In this embodiment, the cylinder 9 is effectively protected by covering its outer surface with side plates 16. It should be noted that the cylinder in this embodiment is formed by splicing two half-cylinders together.

[0046] To ensure continuous signal transmission to the contact wires of each conductive ring, two contact wires 15 are provided at the corresponding positions on the inner wall of the cylinder 9 for each conductive ring 7. The same end of each contact wire 15 contacts the corresponding conductive ring 7 in opposite directions. This is achieved by providing two contact wires in each brush filament support 5. A conductor 18 is connected to the same end of each of the two contact wires on each brush filament support 5. The conductor 18 is then electrically connected to the socket via a wire. The other ends of the two contact wires extend tangentially to the conductive ring and contact it. The two contact wires are on the same plane as the conductive ring and form a figure-eight shape. This ensures continuous signal transmission to the contact wires of each conductive ring. The conductor can be a welding wire.

[0047] The specific structure of the device provided by the present invention includes high-precision fully sealed bearings, cables, sockets, and welding wires, which are purchased components. Other parts are all machined from precious metal materials, high-strength aluminum alloy materials, and polymer non-metallic materials.

[0048] The device provided by this invention has a wide frequency range for transmitting electrical signals (0-200MHz), can transmit large currents (30A), has high inter-ring high voltage insulation (500V without breakdown), high reliability in high temperature and high humidity working environments (working life of 10 million revolutions), small axial and radial dimensions, light weight, convenient assembly and debugging, and is a self-contained system. It can achieve the requirements of full sealing against rain, sand and dust, mold, and salt spray corrosion. It has a neat and beautiful appearance, is safe and reliable, easy to maintain, and requires no maintenance throughout its entire life cycle.

[0049] It should be noted that the steps and methods used in the claims of this invention are the same as those in the above embodiments. To avoid redundancy, preferred embodiments are described in this invention. However, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this invention.

[0050] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A closed-loop fixed conductor signaling device, characterized in that, include: The cylindrical body (9) has an upper end cap (1) and a bottom end cap (10) at its two ends respectively. A central shaft (11) is inserted inside the cylinder (9) and is rotatably connected to the upper end cover (1) and the bottom end cover (10), wherein the central shaft (11) is a hollow shaft; Multiple isolation rings (4) are equally spaced on the central shaft (11); Insulating rings (6) are fitted on the portion of the central shaft (11) located between each pair of isolation rings (4). Each of the insulating rings (6) is fitted with a conductive ring (7), and the conductive ring (7) is embedded in the insulating ring (6); The inner side of each conductive ring (7) is connected to the cable (12) running through the central shaft (11) by a wire that passes through the insulating ring (6) and the central shaft (11) in sequence; The inner side of the cylinder (9) is provided with contact wires (15) at the position corresponding to each conductive ring (7). One end of each contact wire (15) is in contact with the corresponding conductive ring (7), and the other end is installed on the brush wire bracket (5) of the cylinder (9). Each contact wire (15) conducts the electrical signal of the corresponding conductive ring (7) to the outside of the cylinder (9). Each of the isolation rings (4) is fitted with a plurality of ring bodies (41); the sidewall of each isolation ring (4) extends to the ring body (41) fitted thereon and is embedded in the inner wall of the cylinder (9), and the inner wall of the cylinder (9) is provided with a groove for embedding the ring body (41); wherein, a certain gap is left between each ring body (41) and the corresponding groove; The central shaft (11) is fixedly fitted with a limiting ring (8) near the bottom end cover (10), and the limiting ring (8) is in contact with the isolation ring (4) near the bottom end cover (10); The central shaft (11) is located near the upper end cover (1) and is threaded with a locking nut (3). The locking nut (3) is in contact with the isolation ring (4) near the upper end cover (1). The locking nut (3) is used to fasten the equally spaced isolation rings (4) sleeved on the central shaft (11) between the limiting ring (8) and the insulating rings (6) between each pair of isolation rings (4); The side wall of the cylinder (9) has through holes at the positions corresponding to each contact wire (15). Each of the through holes is equipped with the bristle holder (5); Each of the through holes is provided with a protective sleeve (17) on the outside, one end of the protective sleeve (17) is connected to the outer edge of the through hole, and the other end is covered with a protective plate (14). Each of the guard plates (14) is provided with a socket (13), which is electrically connected to the corresponding contact wire (15); Each of the contact wires (15) conducts the electrical signal of the corresponding conductive ring (7) to the corresponding socket (13).

2. The closed-loop fixed conductor signal device according to claim 1, characterized in that, The two adjacent contact wires (15) are respectively disposed on both sides of the cylinder (9).

3. The closed-loop fixed conductor signal device according to claim 1, characterized in that, The outer surface of the cylinder (9) is covered with side plates (16).

4. The closed-loop fixed conductor signal device according to claim 1, characterized in that, Both ends of the central shaft (11) are rotatably connected to the upper end cover (1) and the bottom end cover (10) through high-precision fully sealed bearings.

5. The closed-loop fixed conductor signal device according to claim 1, characterized in that, Each conductive ring (7) is provided with two contact wires (15) at the position corresponding to the inner side wall of the cylinder (9), and the same end of the two contact wires (15) respectively contacts the corresponding conductive ring (7) in opposite directions.

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