Lightning protection mechanism of radio frequency duplexer
By using the limiting design of the grounding thread post and C-type snap ring, the problem of unstable grounding connection in the RF duplex surge protector is solved, achieving stable discharge protection and preventing damage to the equipment from lightning.
Patent Information
- Application Number
- CN202423160583.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-20
AI Technical Summary
In existing surge protection measures for radio frequency duplexers, loose screw connections in antenna feeder surge protectors can lead to unstable ground wire connections with the casing, affecting the discharge effect.
The device employs a grounding threaded post and a C-shaped retaining ring structure. Through the cooperation of the nut, the limiting groove, and the retaining hole, a stable connection between the ground wire and the housing is ensured. The C-shaped retaining ring is used to limit the nut to prevent loosening, thus achieving stable discharge.
It effectively prevents nuts from loosening, ensures a stable ground connection, guarantees the discharge protection effect of the RF duplexer, and avoids damage to the equipment from lightning.
Smart Images
Figure CN223651945U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to lightning protection equipment technical field, concretely is a lightning protection mechanism of radio frequency duplexer. BACKGROUND
[0002] A radio frequency duplexer is a three-port radio frequency device that is primarily used in communications, radar, and other sensing equipment to allow transmitter (TX) and receiver (RX) circuits to share the same antenna while avoiding mutual interference. The duplexer separates signals of different frequencies using high-pass, low-pass, or band-pass filters, allowing the same antenna to be used for receiving and transmitting signals of different frequencies.
[0003] The existing radio frequency duplexer generally adopts a special antenna feeder lightning protector for discharging lightning protection when lightning protection measures. The existing antenna feeder lightning protector guides the lightning current into the shell of the antenna feeder lightning protector through the gas discharge tube, and then guides the lightning current into the ground through the ground line structure on the shell, thereby preventing the radio frequency duplexer behind from being damaged by lightning. In actual use, the applicant found that the ground line connected to the shell of the existing antenna feeder lightning protector is locked on the shell by a screw, but the screw may loosen due to vibration or other reasons, thereby affecting the conduction of the ground line and the shell. In order to solve the above problems, a lightning protection mechanism for a radio frequency duplexer is provided. SUMMARY
[0004] The utility model aims at: in order to solve the above -mentioned problem, provide a lightning protection mechanism for radio frequency duplexer.
[0005] The technical scheme adopted by the utility model is as follows: a lightning protection mechanism for a radio frequency duplexer, comprising a radio frequency duplexer, an antenna feeder lightning protector connected to the input end of the radio frequency duplexer, a ground lead threaded column provided on the antenna feeder lightning protector, a ground line sleeved on the ground lead threaded column, a nut threadedly connected to the ground lead threaded column, a plurality of limiting grooves formed in the upper part of the nut, a through clamping hole formed in the ground lead threaded column, and a C-shaped clamping spring fitted into the clamping hole.
[0006] In a preferred embodiment, the ground line includes a cable, and wire terminals are connected to both ends of the cable. A through hole is formed in the wire terminal, and the wire terminal at one end of the cable is sleeved on the ground lead threaded column through the through hole.
[0007] In a preferred embodiment, the wire terminal at the other end of the cable is connected to a ground copper bar.
[0008] In a preferred embodiment, an open gasket is provided between the wire terminal and the nut and is sleeved on the ground lead threaded column.
[0009] In a preferred embodiment, the lightning protection device for antenna and feeder comprises a shell, the grounding threaded column is fixedly connected with the shell, a core wire is mounted in the shell in an insulated manner, a gas discharge tube is mounted on the shell, one end electrode of the gas discharge tube is connected with the core wire, and the other end electrode of the gas discharge tube is connected with the shell.
[0010] In a preferred embodiment, input and output connecting portions are arranged at two ends of the shell respectively, and the core wire extends into the input and output connecting portions respectively.
[0011] In summary, due to the adoption of the above technical scheme, the utility model has the beneficial effects that:
[0012] 1. In the ground wire connecting structure of the lightning protection device for antenna and feeder, the nut drives the open washer to compress the ground wire, and then the two ends of the C-shaped clamping spring are penetrated through the limiting groove and clamped with the clamping hole on the grounding threaded column by using a tool, at this time, the C-shaped clamping spring can limit the nut, so as to prevent the nut from rotating and loosening, thereby ensuring the stable connection of the ground wire and further ensuring stable discharge. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a schematic diagram of the connection structure of the radio frequency duplexer and the lightning protection device for antenna and feeder of the utility model;
[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the lightning protection device for antenna and feeder in the utility model;
[0015] Figure 3 It is a schematic diagram of the front view of the internal structure of the utility model;
[0016] Figure 4 It is a schematic diagram of the exploded three-dimensional structure of the grounding threaded column, the nut and the C-shaped clamping spring in the utility model.
[0017] Marked in the figure: 1-radio frequency duplexer, 2-lightning protection device for antenna and feeder, 3-grounding threaded column, 4-ground wire, 5-nut, 6-limiting groove, 7-clamping hole, 8-C-shaped clamping spring, 9-cable, 10-wiring terminal, 11-through hole, 12-open washer, 13-shell, 14-core wire, 15-gas discharge tube, 16-input connecting portion, 17-output connecting portion. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.
[0019] The technical scheme of the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Figures 1-4 The lightning protection mechanism of the radio frequency duplexer according to the embodiments of the utility model will be described in detail.
[0020] Embodiments:
[0021] The lightning protection mechanism of the radio frequency duplexer according to the embodiments of the utility model is shown in Figures 1 to 4 The lightning protection mechanism of the radio frequency duplexer according to the embodiments of the utility model is shown in
[0022] The lightning protection mechanism of the radio frequency duplexer according to the embodiments of the utility model is shown in Figures 1 to 4 The lightning protection mechanism of the radio frequency duplexer according to the embodiments of the utility model is shown in
[0023] The lightning protection mechanism of the radio frequency duplexer according to the embodiments of the utility model is shown in Figures 1 to 4 The lightning protection mechanism of the radio frequency duplexer according to the embodiments of the utility model is shown in
[0024] The lightning protection mechanism of the radio frequency duplexer according to the embodiments of the utility model is shown in Figures 1 to 4As shown, the shell 13 is fixedly connected with a ground threaded column 3, the ground threaded column 3 is sleeved with a ground wire 4, the ground threaded column 3 is threadedly connected with a nut 5, a plurality of limiting grooves 6 are formed in the upper part of the nut 5, a clamping hole 7 is formed in the ground threaded column 3, a C-shaped clamping spring 8 is clamped in the clamping hole 7, and the C-shaped clamping spring 8 is clamped with the clamping hole 7 through the limiting groove 6. This structure sleeves the ground wire 4 on the ground threaded column 3, and then locks the ground wire 4 through the nut 5, so that the ground wire 4 is connected with the shell 13, so that the shell 13 is discharged by the ground wire 4, and discharge protection is realized.
[0025] And after the nut 5 is pressed against the ground wire 4, the two ends of the C-shaped clamping spring 8 are penetrated through the limiting groove 6 and clamped with the clamping hole 7 on the ground threaded column 3 by using a tool. At this time, the C-shaped clamping spring 8 can limit the nut 5, so as to prevent the nut 5 from rotating and loosening, so as to ensure the stable connection of the ground wire 4, and further ensure the stable discharge.
[0026] Reference Figures 1 to 4 As shown, the ground wire 4 comprises a cable 9, and the two ends of the cable 9 are press-fitted with a terminal 10. The terminal 10 is provided with a through hole 11, and the terminal 10 at one end of the cable 9 is sleeved on the ground threaded column 3 through the through hole 11. The terminal 10 at the other end of the cable 9 is connected with a grounding copper bar. This structure of the cable 9 and the terminal 10 constitutes the ground wire 4, wherein the terminal 10 is sleeved on the ground threaded column 3 through the through hole 11, so that the ground wire 4 is connected with the conductive threaded column 3.
[0027] Reference Figures 1 to 4 As shown, an open ring 12 is arranged between the terminal 10 and the nut 5 and is sleeved on the ground threaded column 3. In this structure, the elastic force of the open ring 12 can extrude and fit the terminal 10, so as to ensure stable conductive performance, and also plays a certain role in preventing the nut 5 from loosening.
[0028] The implementation principle of the lightning protection mechanism of the radio frequency duplexer in the embodiment of the application is as follows: when the antenna is struck by lightning, the core wire 14 of the antenna feeder lightning protection device 2 will guide the lightning current into the gas discharge tube 15. At this time, the voltage exceeds the insulation voltage of the gas in the gas discharge tube 15, and the gas is broken down, so as to realize the conduction. At this time, the lightning current is guided to the shell 13, and then the ground wire 4 on the ground threaded column 3 is used to discharge the lightning current of the shell 13, so as to realize discharge protection, thereby preventing the damage of lightning to the radio frequency duplexer 1 behind.
[0029] In the ground wire connecting structure of the lightning protection device 2, the nut 5 drives the open washer 12 to press the ground wire 4, then the both ends of the C-shaped clamp spring 8 are penetrated through the limiting slot 6 and clamped with the clamping hole 7 on the ground wire threaded column 3 by using a tool, at this time, the C-shaped clamp spring 8 can limit the nut 5, so as to prevent the nut 5 from rotating and loosening, thereby ensuring the stable connection of the ground wire 4, and further ensuring the stable discharge.
[0030] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims
1. A lightning protection mechanism for a radio frequency duplexer, comprising a radio frequency duplexer (1), characterized in that: The input end of the radio frequency duplexer (1) is connected with a lightning protection device for antenna feeder (2), a ground-threaded column (3) is arranged on the lightning protection device for antenna feeder (2), a ground wire (4) is sleeved on the ground-threaded column (3), a nut (5) is threadedly connected on the ground-threaded column (3), a plurality of limiting grooves (6) are formed on the upper part of the nut (5), a clamping hole (7) is formed on the ground-threaded column (3), a C-shaped clamping spring (8) is clamped in the clamping hole (7), and the C-shaped clamping spring (8) is clamped with the limiting grooves (6) and the clamping hole (7).
2. The lightning protection mechanism of a radio frequency duplexer according to claim 1, wherein: The ground wire (4) comprises a cable (9), wire terminals (10) are press-fitted on both ends of the cable (9), through holes (11) are formed on the wire terminals (10), and the wire terminal (10) on one end of the cable (9) is sleeved on the ground-threaded column (3) through the through hole (11). 3. The lightning protection mechanism of a radio frequency duplexer according to claim 2, wherein: The wire terminal (10) on the other end of the cable (9) is connected with a grounding copper bar.
4. The lightning protection mechanism of a radio frequency duplexer according to claim 3, wherein: An open gasket (12) is arranged between the wire terminal (10) and the nut (5) and sleeved on the ground-threaded column (3).
5. The lightning protection mechanism of a radio frequency duplexer as claimed in claim 1, characterized in that: The lightning protection device for antenna feeder (2) comprises a shell (13), the ground-threaded column (3) is fixedly connected with the shell (13), a core wire (14) is insulatively arranged in the shell (13), a gas discharge tube (15) is arranged on the shell (13), one end electrode of the gas discharge tube (15) is connected with the core wire (14), and the other end electrode of the gas discharge tube (15) is connected with the shell (13).
6. A lightning protection mechanism for a radio frequency duplexer as claimed in claim 5, characterized in that: Input connecting portions (16) and output connecting portions (17) are arranged at both ends of the shell (13), respectively, and the core wire (14) extends into the input connecting portions (16) and the output connecting portions (17), respectively.