Slip ring device

Abstract

The invention is applicable to the technical field of base station antennas, and provides a slip ring device which comprises a first slip ring device, the first slip ring device comprises a first static assembly and a first rotating assembly, the first static assembly comprises a first arc-shaped circuit and a first cable, the first cable is arranged at one end of the first arc-shaped circuit, and the first arc-shaped circuit is connected with the first cable. The first arc-shaped circuit and the first cable are provided with a first circle center, the first rotating assembly comprises a second arc-shaped circuit and a second cable, the second cable is arranged at one end of the second arc-shaped circuit, the second arc-shaped circuit is connected with the second cable, and the second arc-shaped circuit and the second cable rotate with the first circle center as the axis. A track formed by rotation of the second arc-shaped line and the second cable is overlapped with the first arc-shaped line, and the first arc-shaped line is electrically coupled with the second arc-shaped line. Therefore, according to the slip ring device, the cable is prevented from being damaged due to rotation of the antenna, and the service life of the cable and the service life of the antenna are prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of base station antennas, and in particular to a slip ring device. Background Art

[0002] With the rapid development of mobile communications, higher requirements are placed on the beam coverage capability of base station antennas. In addition to adjusting the beam pitch angle through "mechanical downtilt" and "electrical downtilt", the beam is also required to have the ability to adjust the azimuth angle, so that the antenna beam has three-dimensional spatial adjustment capabilities. For some special scenarios, such as high-speed rail scenarios, the antenna beam can be dynamically adjusted as the coverage target moves, thereby improving the beam coverage capability and improving the network service quality for users.

[0003] In order to adjust the azimuth of the beam, a fixture with horizontal azimuth adjustment capability can be used. However, this method cannot be adjusted dynamically in real time and requires workers to adjust the azimuth angle of the fixture, which is inconvenient and has high operating costs. Another method is remote electric adjustment. The current industry solution to this method is as follows: a circular cover is used, and the antenna is driven by a motor inside the cover to cause the antenna to deflect in azimuth, thereby achieving deflection in the direction of maximum radiation of the antenna beam, that is, beam azimuth adjustment.

[0004] The base station antenna mainly consists of a reflector, a radiation unit, a feed network and its transmission mechanism. The radiation unit is placed on the front of the reflector, and the feed network and transmission mechanism are placed on the back of the reflector. The feed network consists of a phase shifter and a cable for feeding. The phase shifter's feed port is connected to the radiation unit, and the phase shifter's main feed port is connected to the connector fixed on the lower end face of the antenna. When the antenna is driven by a motor and the azimuth angle changes, the reflector and its components mounted on the reflector rotate together, but the connector does not rotate, so the connector cable or the phase shifter main feed port cable will be in a dynamic process and twist. During multiple rotations, it is possible to be damaged, reducing the service life.

[0005] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] In view of the above-mentioned defects, an object of the present invention is to provide a slip ring device to avoid damage to the cable due to the rotation of the antenna and to increase the service life of the cable and the antenna.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a slip ring device, including a first slip ring device, the first slip ring device includes a first stationary component and a first rotating component, the first stationary component includes a first arcuate line and a first cable, the first cable is arranged at one end of the first arcuate line, the first arcuate line is connected to the first cable, the first arcuate line and the first cable are provided with a first center of circle, the first rotating component includes a second arcuate line and a second cable, the second cable is arranged at one end of the second arcuate line, the second arcuate line is connected to the second cable, the second arcuate line and the second cable rotate with the first center of circle as the axis, the trajectory formed by the rotation of the second arcuate line and the second cable overlaps with the first arcuate line, and the first arcuate line is electrically coupled to the second arcuate line.

[0008] According to the slip ring device of the present invention, the center angle of rotation of the second arc-shaped line and the second cable is at least 120 degrees.

[0009] According to the slip ring device of the present invention, the overlapping portion of the first stationary component and the first rotating component is a first overlapping component, and the first arc-shaped circuit and the second arc-shaped circuit are electrically coupled and connected on the first overlapping component.

[0010] The slip ring device according to the present invention further comprises a second slip ring device.

[0011] According to the slip ring device of the present invention, the center of the second slip ring device and the center of the first slip ring device are both the first center of the circle, and the radius of the second slip ring device is smaller than the radius of the first slip ring device.

[0012] According to the slip ring device of the present invention, the second slip ring device is provided with a second stationary component and a second rotating component.

[0013] According to the slip ring device of the present invention, the second stationary component includes a third arc-shaped line and a third cable.

[0014] According to the slip ring device of the present invention, the shape of the third arc-shaped line is set to be a serpentine line.

[0015] The slip ring device according to the present invention further comprises a plurality of slip ring devices.

[0016] According to the slip ring device of the present invention, the centers of circles corresponding to the plurality of slip ring devices and the center of circle of the first slip ring device are both the first center of circle, and the radii of the plurality of slip ring devices are respectively smaller than the radius of the first slip ring device.

[0017] The present invention provides a slip ring device, including a first stationary component and a first rotating component, wherein the first stationary component is composed of a first arc-shaped line and a first cable connected, and the first rotating component is composed of a second arc-shaped line and a second cable connected, the first cable is arranged at one end of the first arc-shaped line, and the second cable is arranged at one end of the second arc-shaped line, the first arc-shaped line and the second arc-shaped line are electrically coupled and connected, the trajectory formed by the rotation of the second arc-shaped line and the second cable overlaps with the first arc-shaped line, the cable connected to the first cable is connected to the joint of the stationary end face on the antenna, and the cable connected to the second cable is connected to the main feeder of the relatively rotating phase shifter, and the impedance matching of the slip ring device is performed, and the signal of the antenna is not attenuated. Thus, the slip ring device of the present invention avoids the cable from being damaged due to the rotation of the antenna, and prolongs the service life of the cable and the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a first slip ring device of the slip ring device of the present invention;

[0019] Figure 2 is a schematic diagram of a signal transmission path of a first slip ring device of the slip ring device of the present invention;

[0020] Figure 3 It is a schematic structural diagram of a first slip ring device and a second slip ring device of the slip ring device of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] like Figures 1-2As shown, the present invention provides a slip ring device, including a first slip ring device 100, the first slip ring device 100 includes a first stationary component 1 and a first rotating component 2, the first stationary component 1 includes a first arc-shaped line 11 and a first cable 12, the first cable 12 is arranged at one end of the first arc-shaped line 11, the first arc-shaped line 11 is connected to the first cable 12, the first cable 12 is connected to a joint of a stationary end face on an antenna through a cable, the first arc-shaped line 11 and the first cable 12 are provided with a first center 3, the first rotating component 2 includes a second arc-shaped line 21 and a second cable 22, the The second cable 22 is arranged at one end of the second arc line 21, the second arc line 21 is connected to the second cable 22, the second cable 22 is connected to the main feeder of the phase shifter that rotates relatively on the antenna through a cable, the second arc line 21 and the second cable 22 rotate with the first center 3 as the axis, the trajectory formed by the rotation of the second arc line 21 and the second cable 22 overlaps with the first arc line 11, and the center angle corresponding to the second arc line 21 and the second cable 22 during the rotation process is 120 degrees or greater than 120 degrees, that is, the second arc line 21 and the second cable 22 can achieve The first arc line 11 is electrically coupled to the second arc line 21 when the focus tracking antenna rotates, and the phase shifter inside the antenna rotates along with the reflector on the antenna, and the end face and outer cover of the antenna do not rotate. The first cable 12 is connected to the connector on the end face of the antenna, and the connector on the end face of the antenna transmits the antenna signal to the first arc line 11 through the first cable 12. The first arc line 11 is connected to the second arc line 21 so that the signal is transmitted from the first arc line 11 to the second arc line 21. The non-overlapping portion of the first arc line 11 and the second arc line 21 No signal passes through the second half 5, the second arc line 21 is connected to the second cable 22 so that the signal is transmitted from the second arc line 21 to the second cable 22 again, the second cable 22 is connected to the main feeder of the phase shifter, and the second cable 22 transmits the signal to the phase shifter, thereby transmitting the signal on the antenna end face to the phase shifter. During the horizontal azimuth adjustment process of the antenna, the first rotating component 2 of the first slip ring device 100 rotates synchronously, thereby avoiding the twisting of the cable, and through the impedance matching of the first slip ring device 100, the signal of the antenna is not attenuated, the first slip ring device 100 has a long service life, is stable and reliable, and has no abnormal performance after multiple and high-frequency rotations.

[0023] Thus, the slip ring device of the present invention prevents the cable from being damaged due to the rotation of the antenna, thereby increasing the service life of the cable and the antenna.

[0024] Preferably, the center angle of rotation of the second arc line 21 and the second cable 22 is at least 120 degrees, and the center angle corresponding to the second arc line 21 and the second cable 22 during the rotation process is 120 degrees or greater than 120 degrees, that is, the second arc line 21 and the second cable 22 can achieve an angle rotation of at least ±60° in the left and right directions.

[0025] Preferably, the overlapping part of the first stationary component 1 and the first rotating component 2 is the first overlapping component 4, the first arc line 11 and the second arc line 21 are electrically coupled and connected on the first overlapping component 4, no signal passes through the rear half 5 of the non-overlapping part of the first arc line 11 and the second arc line 21, the connector on the end face of the antenna transmits the signal of the antenna to the first arc line 11 by the first cable 12, the first arc line 11 is connected to the second arc line 21 so that the signal is transmitted from the first arc line 11 to the second arc line 21, the second arc line 21 is connected to the second cable 22 so that the signal is transmitted from the second arc line 21 to the second cable 22 again, the second cable 22 is connected to the main feeder of the phase shifter, and finally the second cable 22 transmits the signal to the phase shifter, thereby transmitting the signal on the end face of the antenna to the phase shifter.

[0026] Preferably, if Figure 3 As shown, the slip ring device also includes a second slip ring device 200. When the antenna is a two-port antenna, the first slip ring is transposed and the second slip ring device 200 is connected to the two ports of the antenna respectively, ensuring that the signal on the antenna end surface is transmitted to the phase shifter.

[0027] Preferably, the center of the second slip ring device 200 and the center of the first slip ring device 100 are both the first center of the circle 3, and the radius of the second slip ring device 200 is smaller than the radius of the first slip ring device 100, so as to ensure that the path lengths of the signals of the two ports of the antenna are consistent after passing through the first slip ring device 100 and the second slip ring device 200 respectively, so as to ensure that the phases of the signals transmitted to the inside of the antenna are the same.

[0028] Preferably, the second slip ring device 200 is provided with a second stationary component and a second rotating component. During the horizontal azimuth adjustment process of the antenna, the second stationary component remains stationary, and the second rotating component rotates synchronously with the phase shifter in the antenna, thereby avoiding twisting of the cable.

[0029] Preferably, the second stationary component comprises a third arc-shaped circuit and a third cable.

[0030] Preferably, the shape of the third arc line is set to a serpentine line to ensure that the path lengths of the two port signals of the antenna are consistent after passing through the first slip ring device 100 and the second slip ring device 200 respectively, and to ensure that the phases of the signals transmitted to the inside of the antenna are the same.

[0031] Preferably, the slip ring device further comprises a plurality of slip ring devices. When the antenna is a multi-port antenna, the first slip ring device 100 and the plurality of slip ring devices ensure that the signal on the antenna end face is transmitted to the phase shifter.

[0032] Preferably, the centers of circles corresponding to the plurality of slip ring devices and the center of the first slip ring device 100 are both the first center of circle 3, the radii of the plurality of slip ring devices are respectively smaller than the radius of the first slip ring device 100, the sizes of the arc lines of the plurality of slip ring devices are not consistent, and the arc lines of the plurality of slip ring devices need to be set as diffuse wave structures to ensure that the path lengths of the signals of the plurality of ports of the antenna are consistent after passing through the first slip ring device 100 and the plurality of slip ring devices, respectively, so as to ensure that the phases of the signals transmitted to the inside of the antenna are the same.

[0033] In summary, the present invention provides a slip ring device, including a first stationary component and a first rotating component, wherein the first stationary component is composed of a first arc-shaped line and a first cable connected, and the first rotating component is composed of a second arc-shaped line and a second cable connected, the first cable is arranged at one end of the first arc-shaped line, and the second cable is arranged at one end of the second arc-shaped line, the first arc-shaped line and the second arc-shaped line are electrically coupled and connected, and the trajectory formed by the rotation of the second arc-shaped line and the second cable overlaps with the first arc-shaped line, and the cable connected to the first cable is connected to the joint of the stationary end face on the antenna, and the cable connected to the second cable is connected to the main feeder of the relatively rotating phase shifter, and the impedance matching of the slip ring device is achieved, and the signal of the antenna is not attenuated. In this way, the slip ring device of the present invention avoids the damage of the cable due to the rotation of the antenna, and improves the service life of the cable and the antenna.

[0034] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A slip ring device, characterized in that: The invention comprises a first slip ring device, which comprises a first stationary component and a first rotating component, wherein the first stationary component comprises a first arcuate circuit and a first cable, wherein the first cable is arranged at one end of the first arcuate circuit, the first arcuate circuit is connected to the first cable, and the first arcuate circuit and the first cable are provided with a first center of circle, and the first rotating component comprises a second arcuate circuit and a second cable, wherein the second cable is arranged at one end of the second arcuate circuit, the second arcuate circuit is connected to the second cable, the second arcuate circuit and the second cable rotate with the first center of circle as the axis, the trajectory formed by the rotation of the second arcuate circuit and the second cable overlaps with the first arcuate circuit, and the first arcuate circuit is electrically coupled to the second arcuate circuit.

2. The slip ring device according to claim 1, characterized in that: The center angle of rotation of the second arc line and the second cable is at least 120 degrees.

3. The slip ring device according to claim 1, characterized in that: The overlapping portion of the first stationary component and the first rotating component is a first overlapping component, and the first arc-shaped circuit and the second arc-shaped circuit are electrically coupled and connected on the first overlapping component.

4. The slip ring device according to claim 1, characterized in that: A second slip ring arrangement is also included.

5. The slip ring device according to claim 4, characterized in that: The center of the second slip ring device and the center of the first slip ring device are both the first center of the circle, and the radius of the second slip ring device is smaller than the radius of the first slip ring device.

6. The slip ring device according to claim 4, characterized in that: The second slip ring device is provided with a second stationary component and a second rotating component.

7. The slip ring device according to claim 6, characterized in that: The second stationary component includes a third arc-shaped line and a third cable.

8. The slip ring device according to claim 7, characterized in that: The shape of the third arc line is set to be a serpentine line.

9. The slip ring device according to claim 1, characterized in that: Also included are a plurality of slip ring arrangements.

10. The slip ring device according to claim 9, characterized in that: The centers of circles corresponding to the plurality of slip ring devices and the center of the first slip ring device are both the first center of circle, and the radii of the plurality of slip ring devices are respectively smaller than the radius of the first slip ring device.

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