CN218997038U

CN218997038U - Novel radio frequency lightning arrester

Info

Publication number: CN218997038U
Application number: CN202223516179.5U
Authority: CN
Inventors: 王晓晟; 李斌
Original assignee: Zhenjiang Huazhan Electronic Science & Technology Co ltd
Current assignee: Zhenjiang Huazhan Electronic Science & Technology Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-09
Anticipated expiration: 2032-12-28

Abstract

The utility model discloses a novel radio frequency lightning arrester, which comprises a square shell, wherein a first connector and a second connector are respectively arranged at two ends of the square shell; the square shell is internally provided with an inner conductor, two groups of mounting holes are formed in the square shell, short-circuit rods are arranged in the two groups of mounting holes, and the short-circuit rods are connected with the inner conductor and the square shell for short-circuit; the beneficial effects of the utility model are as follows: through the pi-type impedance matching of the double short circuit mode, the working passband bandwidth can be effectively increased, the lightning surge bearing capacity of the lightning arrester is improved, the application bandwidth of the lightning arrester can be effectively increased under the condition that the product volume is not increased, and compared with a lambda/4 lightning arrester in the traditional mode, the lightning arrester has the advantages that the volume can be obviously reduced, and the cost is reduced.

Description

Novel radio frequency lightning arrester

Technical Field

The utility model relates to a novel radio frequency lightning arrester.

Background

The lightning protection coaxial lightning arrester for microwave communication system, mobile communication base station and electronic instrument and equipment generally includes inner conductor, outer conductor, insulating medium between inner and outer conductors, short-circuit rod and shell body which are positioned in the middle of inner and outer conductors and are mutually perpendicular to the axial direction of inner and outer conductors by 1/4λ, and two ends of inner and outer conductors are equipped with joint structures for connecting with inner and outer conductors of other coaxial devices.

In the prior art, for example, chinese patent publication No. CN208608530U discloses a D-type radio frequency coaxial lightning arrester, a casing C is in a cross structure with four open sides, an inner conductor is placed in the casing C, a short-circuit rod is vertically arranged with the inner conductor, the short-circuit rod extends into the casing C from a first opening of the casing C and is screwed with the inner conductor through threads, the top end of the short-circuit rod is tightly pressed with a casing B through a clamp, the short-circuit rod and a casing adopt an interference tight fit installation mode, the contact performance is improved, the looseness is avoided, and the qualification rate of a withstand voltage test is increased; the short-circuit rod is shortened, the total volume of the product is small, and the short-circuit rod is reduced by 25%, thereby being beneficial to convenient installation of workers.

However, in the using process of the scheme, the short-circuit rod of the hollow spiral body structure has a large volume, and the processing and manufacturing of the hollow spiral short-circuit line structure have considerable difficulty, so that the utility model provides a novel radio frequency lightning arrester to solve the problems.

Disclosure of Invention

The utility model aims to provide a novel radio frequency lightning arrester so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the novel radio frequency lightning arrester comprises a square shell, wherein a first connector and a second connector are respectively arranged at two ends of the square shell;

the square shell is internally provided with an inner conductor, two groups of mounting holes are formed in the square shell, short-circuit rods are arranged in the two groups of mounting holes, and the short-circuit rods are connected with the inner conductor and the square shell for short-circuiting.

As an improvement of the technical scheme, two groups of threaded holes are formed in the inner conductor, and the two groups of threaded holes are matched with the two groups of mounting holes;

the two groups of short-circuit rods are respectively arranged in the two groups of threaded holes.

As an improvement of the technical scheme, the short-circuit rod is provided with a threaded outer wall which is in threaded connection with the threaded hole;

and the short circuit rod is also provided with an inner hexagonal hole.

As the improvement of above-mentioned technical scheme, first connector includes first connection casing, first connection casing and square casing threaded connection, be provided with first insulator in the first connection casing, be provided with the contact pin spare in the first insulator, the contact pin spare is connected with the inner conductor.

As an improvement of the technical scheme, the outer wall of the first connecting shell is sleeved with a screw sleeve, a first sealing ring is arranged in the screw sleeve, and the first sealing ring is sleeved on the outer wall of the first connecting shell;

the first connecting shell is further sleeved with a second sealing ring, and the second sealing ring is in contact with the square shell.

As the improvement of above-mentioned technical scheme, the second connector includes the second and connects the casing, the second is connected casing and square casing threaded connection, be provided with the second insulator in the second is connected the casing, be provided with the jack spare in the second insulator, the jack spare is connected with the inner conductor, still be provided with the contact head on the jack spare, the contact head sets up the inner chamber at the second connection casing.

As an improvement of the technical scheme, a third sealing ring is arranged between the second connecting shell and the square shell;

the outer wall of the second connection shell is sequentially sleeved with a fourth sealing ring, a gasket, an internal tooth gasket and a hexagonal nut from the jack piece to the square contact head, and the hexagonal nut is in threaded connection with the outer wall of the second connection shell.

As an improvement of the technical scheme, the pin component and the jack component are both in threaded connection with the inner conductor.

Compared with the prior art, the utility model has the beneficial effects that:

when the assembly is carried out, the short-circuit rod is arranged in the mounting hole, the short-circuit rod is connected with the inner conductor, and then the two groups of mounting holes are fused by using soldering, so that the two groups of short-circuit rods connect and conduct the inner conductor and the square shell, and the inner conductor of the whole product is short-circuited with the outer conductor of the external square shell, so that a double short-circuit mode is formed;

through the pi-type impedance matching of the double short circuit mode, the bandwidth of a working passband can be effectively increased, the bearing capacity of lightning stroke and surge of the lightning arrester can be improved, the application bandwidth of the lightning arrester can be effectively increased under the condition that the volume of the lightning arrester is not increased, and compared with a lambda/4 lightning arrester in the traditional mode, the lightning arrester has the advantages that the volume can be obviously reduced, and the cost is reduced; compared with the traditional lightning arrester product with larger volume and larger processing difficulty, the novel product adopts a novel double-short-circuit rod mode, can improve the application frequency band of the product on the premise of keeping the product volume unchanged, can greatly reduce the product cost, and has excellent electrical performance.

Drawings

FIG. 1 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 2 is a schematic diagram of the connection of the inner conductor and shorting bar of the present utility model;

fig. 3 is a cross-sectional view of the present utility model.

In the figure: 10. a first connector; 11. a screw sleeve; 12. a first seal ring; 13. a first connection housing; 14. a pin member; 15. a first insulator; 16. a second seal ring; 20. a square housing; 21. a grounding screw; 22. a mounting hole; 30. an inner conductor; 31. a threaded hole; 40. a shorting bar; 41. a threaded outer wall; 42. an inner hexagonal hole; 50. a second connector; 51. a third seal ring; 52. a second insulator; 53. a socket member; 54. a contact; 55. a second connection housing; 56. a fourth seal ring; 57. a gasket; 58. internal tooth washers; 59. a hexagonal nut.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples:

as shown in fig. 1-3, this embodiment proposes a novel radio frequency lightning arrester, which includes a square housing 20, wherein two ends of the square housing 20 are respectively provided with a first connector 10 and a second connector 50;

the square shell 20 is connected with the grounding screw 21 in a threaded manner, the square shell 20 is internally provided with the inner conductor 30, the square shell 20 is provided with two groups of mounting holes 22, the two groups of mounting holes 22 are respectively provided with a short-circuit rod 40, and the short-circuit rods 40 are connected with the inner conductor 30 and the square shell 20 for short-circuiting.

In this embodiment, during assembly, the shorting bars 40 are placed in the mounting holes 22, and the shorting bars 40 are connected to the inner conductors 30, and then the two groups of mounting holes 22 are fused by soldering, so that the two groups of shorting bars 40 connect and conduct the inner conductors 30 to the square housing 20, and the inner conductors 30 of the whole product are shorted to the outer conductors of the external square housing 20, so as to form a double short circuit;

through the pi-type impedance matching in the double short circuit 40 mode, the bandwidth of a working passband can be effectively increased, the bearing capacity of lightning stroke and surge of the lightning arrester can be improved, the application bandwidth of the lightning arrester can be effectively increased under the condition that the volume of the lightning arrester is not increased, and compared with a lambda/4 lightning arrester in the traditional mode, the lightning arrester has the advantages that the volume can be obviously reduced, and the cost is reduced; compared with the traditional lightning arrester product with larger volume and larger processing difficulty, the novel product adopts a novel double-short-circuit rod mode, can improve the application frequency band of the product on the premise of keeping the product volume unchanged, can greatly reduce the product cost, and has excellent electrical performance.

Specifically, two sets of threaded holes 31 are formed in the inner conductor 30, and the two sets of threaded holes 31 are matched with the two sets of mounting holes 22 in position;

two sets of the shorting bars 40 are respectively disposed in the two sets of screw holes 31.

In the present embodiment, the stability of the connection between the shorting bar 40 and the inner conductor 30 can be improved by the engagement of the shorting bar 40 with the screw hole 31.

Specifically, the shorting bar 40 is provided with a threaded outer wall 41, and the threaded outer wall 41 is screwed in the threaded hole 31;

the shorting bar 40 is also provided with an internal hexagonal hole 42.

In this embodiment, the internal hexagonal hole 42 can facilitate screwing the shorting bar 40 into the threaded hole 31.

Specifically, the first connector 10 includes a first connection housing 13, the first connection housing 13 is in threaded connection with the square housing 20, a first insulator 15 is disposed in the first connection housing 13, a pin member 14 is disposed in the first insulator 15, and the pin member 14 is connected with the inner conductor 30.

In this embodiment, when the first connector 10 is connected, the first insulator 15 is first sleeved on the pin member 14, then the pin member 14 is connected before the inner conductor 30, and the first connector housing 13 is screwed on the square housing 20, so that the first insulator 15 is disposed between the first connector housing 13 and the pin member 14.

Specifically, the outer wall of the first connection shell 13 is sleeved with a threaded sleeve 11, a first sealing ring 12 is arranged in the threaded sleeve 11, and the first sealing ring 12 is sleeved on the outer wall of the first connection shell 13;

the first connecting shell 13 is further sleeved with a second sealing ring 16, and the second sealing ring 16 is in contact with the square shell 20.

In this embodiment, the first seal ring 12 and the second seal ring 16 are used to improve the sealing performance between the first connector 10 and the square housing 20.

Specifically, the second connector 50 includes a second connection housing 55, the second connection housing 55 is in threaded connection with the square housing 20, a second insulator 52 is disposed in the second connection housing 55, a jack member 53 is disposed in the second insulator 52, the jack member 53 is connected with the inner conductor 30, a contact head 54 is further disposed on the jack member 53, and the contact head 54 is disposed in an inner cavity of the second connection housing 55.

In this embodiment, when the second connector 50 is connected, the second insulator 52 is first sleeved on the outer wall of the jack member 53, then the jack member 53 is connected with the inner conductor 30, and then the second connection housing 55 is connected with the square housing 20, so that the second insulator 52 is disposed between the second connection housing 55 and the jack member 53.

Specifically, a third sealing ring 51 is disposed between the second connection housing 55 and the square housing 20;

the outer wall of the second connection housing 55 is sleeved with a fourth sealing ring 56, a gasket 57, an internal tooth gasket 58 and a hexagonal nut 59 in sequence from the jack member 53 to the contact 54, and the hexagonal nut 59 is in threaded connection with the outer wall of the second connection housing 55.

In this embodiment, the third seal ring 51 and the fourth seal ring 56 are used to improve the sealing performance between the second connector 50 and the square housing 20.

Specifically, the pin member 14 and the socket member 53 are both screwed to the inner conductor 30.

In this embodiment, the pin member 14, the socket member 53 and the inner conductor 30 are screw-engaged to improve the stability of the conductor connection.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel radio frequency lightning arrester which characterized in that: the connecting device comprises a square shell (20), wherein a first connector (10) and a second connector (50) are respectively arranged at two ends of the square shell (20);

the novel electric power cable is characterized in that the square shell (20) is connected with the grounding screw (21) in a threaded manner, the inner conductor (30) is arranged in the square shell (20), two groups of mounting holes (22) are formed in the square shell (20), the two groups of mounting holes (22) are internally provided with the short-circuit rods (40), and the short-circuit rods (40) are connected with the inner conductor (30) and the square shell (20) to carry out short-circuit.

2. A novel radio frequency lightning arrester according to claim 1, characterized in that: two groups of threaded holes (31) are formed in the inner conductor (30), and the two groups of threaded holes (31) are matched with the two groups of mounting holes (22) in position;

the two groups of short-circuit rods (40) are respectively arranged in the two groups of threaded holes (31).

3. A novel radio frequency lightning arrester according to claim 2, characterized in that: the short-circuit rod (40) is provided with a threaded outer wall (41), and the threaded outer wall (41) is in threaded connection with the threaded hole (31);

the short-circuit rod (40) is also provided with an inner hexagonal hole (42).

4. A novel radio frequency lightning arrester according to claim 1, characterized in that: the first connector (10) comprises a first connection shell (13), the first connection shell (13) is in threaded connection with a square shell (20), a first insulator (15) is arranged in the first connection shell (13), a pin piece (14) is arranged in the first insulator (15), and the pin piece (14) is connected with an inner conductor (30).

5. The novel radio frequency lightning arrester of claim 4, wherein: the outer wall of the first connecting shell (13) is sleeved with a screw sleeve (11), a first sealing ring (12) is arranged in the screw sleeve (11), and the first sealing ring (12) is sleeved on the outer wall of the first connecting shell (13);

the first connecting shell (13) is also sleeved with a second sealing ring (16), and the second sealing ring (16) is in contact with the square shell (20).

6. The novel radio frequency lightning arrester of claim 4, wherein: the second connector (50) comprises a second connection shell (55), the second connection shell (55) is in threaded connection with the square shell (20), a second insulator (52) is arranged in the second connection shell (55), a jack piece (53) is arranged in the second insulator (52), the jack piece (53) is connected with the inner conductor (30), a contact head (54) is further arranged on the jack piece (53), and the contact head (54) is arranged in an inner cavity of the second connection shell (55).

7. The novel radio frequency lightning arrester of claim 6, wherein: a third sealing ring (51) is arranged between the second connecting shell (55) and the square shell (20);

the outer wall of the second connection shell (55) is sequentially sleeved with a fourth sealing ring (56), a gasket (57), an internal tooth gasket (58) and a hexagonal nut (59) from the jack piece (53) to the square contact head (54), and the hexagonal nut (59) is in threaded connection with the outer wall of the second connection shell (55).

8. The novel radio frequency lightning arrester of claim 6, wherein: the pin component (14) and the jack component (53) are in threaded connection with the inner conductor (30).