阅读说明：本技术 一种尾螺母锁紧的模块化加固型防雷连接器组件 (Modularized reinforced lightning protection connector assembly locked by tail nut ) 是由 刘小凤 庞斌 董宇峰 徐英杰 舒宗安 陈东 于 2019-09-12 设计创作，主要内容包括：本发明涉及一种尾螺母锁紧的模块化加固型防雷连接器组件,属于防雷电连接器领域,解决了现有连接器组件采用导线或印制板焊接连接整体线路占用空间大故障后返修不易且线缆连接不可靠的问题。本发明的连接器与防雷器、防雷器与线缆之间均通过插接连通内部器件,并通过螺钉实现器件之间的紧固连接,线缆压接水晶头与防雷器插接,并在接口处套设半圆环和插头外壳保护压接接口不受外部影响,线缆上依次套设卡环和尾螺母,尾螺母与尾套管通过螺纹连接,通过将尾螺母不断拧紧,套在卡环外的尾螺母一端的锥台型锁紧端部向内压紧卡环,卡环夹紧线缆使其与插头结合为一体,插头与防雷器通过螺钉紧固连接。本发明实现了线缆与防雷器之间的可靠连接。(The invention relates to a modularized reinforced lightning protection connector component locked by a tail nut, belongs to the field of lightning protection electric connectors, and solves the problems that the existing connector component is difficult to repair and the cable connection is unreliable after the existing connector component is connected with an integral circuit by welding through a wire or a printed board, and the occupied space of the integral circuit is large. The connector and the lightning protection device, and the lightning protection device and the cable are communicated with internal devices through insertion, the devices are fastened and connected through screws, the cable is connected with the crystal head in a crimping mode and is inserted into the lightning protection device, the connector is sleeved with the semicircular ring and the plug shell to protect the crimping connector from external influences, the cable is sequentially sleeved with the snap ring and the tail nut, the tail nut is connected with the tail sleeve through threads, the tail nut is continuously screwed, the snap ring is inwards pressed by the frustum-shaped locking end part of one end of the tail nut sleeved outside the snap ring, the snap ring clamps the cable to enable the cable to be combined with the plug into a whole, and the plug is fastened and connected with the lightning protection device through screws. The invention realizes the reliable connection between the cable and the lightning protection device.)

1. The utility model provides a modularization reinforcement type lightning protection connector component of tail nut locking which characterized in that includes: the connector, the lightning protection device and the tail nut locking plug; the connector is used for connecting a lightning protection device and a power supply, one end of the lightning protection device is plugged with the connector, and the other end of the lightning protection device is connected with a cable (15);

The tail nut locking plug includes: the plug main body and the tail nut locking structure; the plug main body is sleeved on the cable (15), and the cable (15) is locked and fixed through the tail nut locking structure; the lightning protector is fixedly connected with the plug main body;

The tail nut locking structure comprises: a tail sleeve (11), a snap ring (12) and a tail nut (10);

The tail sleeve (11) and the snap ring (12) are sleeved on the cable (15) in parallel; tail nut (10) cover is established at tail sleeve pipe (11) and snap ring (12) outside, just tail nut (10) one end with tail sleeve pipe (11) pass through threaded connection, and the other end sets up the locking tip (14) and the snap ring (12) contact of frustum type.

2. The tail nut locking modular reinforced lightning protection connector assembly according to claim 1, wherein the cable shielding layer (8) at one end of the cable (15) is connected with the crystal head (7) in a crimping mode, and the crystal head (7) is plugged with the lightning protection device; the other end of the cable (15) is connected with terminal equipment.

3. the tail nut locking modular ruggedized lightning protection connector assembly of claim 2, wherein the plug body comprises: the plug comprises a plug shell (1), a protection ring and a cover plate (9); the plug outer shell (1) is fixedly connected with the lightning protection device through a first screw (2); the cover plate (9) is fixedly connected with the plug shell (1) through a second screw (19).

4. The tail nut locking modular ruggedized lightning protection connector assembly of claim 3, wherein the protective ring is sleeved outside the cable shield (8); the protection ring comprises two symmetrically spliced semicircular rings (5); a clamping groove (6) is formed in the semicircular ring (5), one end of the crystal head (7) is inserted into a signal interface on the lightning protection device, and the other end of the crystal head is arranged in the clamping groove (6); the plug is characterized in that a mounting groove (4) is formed in the plug shell (1), and the protection ring is arranged in the mounting groove (4).

5. a tail nut locking modular ruggedized lightning protection connector assembly according to claim 3 or 4, wherein a plurality of latch teeth (13) are provided on the snap ring (12); the inner side of the latch (13) is provided with a tooth-shaped structure, and the outer side of the latch is provided with a chamfer.

6. The tail nut locking modular reinforced lightning protection connector assembly according to claim 5, wherein the snap ring (12) is engaged with the tail sleeve (11) through a saw tooth structure or is an integral structure.

7. A tail nut locking modular ruggedized lightning protection connector assembly according to claim 5 or 6, wherein an inner side of the locking end (14) is in contact with a chamfer on an outer side of the latch (13).

8. A tail nut locking modular ruggedized lightning protection connector assembly according to claim 5 or 6, wherein the cover plate (9) is fixedly connected or integrally constructed with the tail sleeve (11).

9. A tail nut locking modular ruggedized lightning protection connector assembly according to claim 1, wherein a second threaded hole (16) is provided in the tail nut (10), and a locking screw (17) is mounted in the second threaded hole (16), the locking screw (17) being configured to limit relative movement between the tail nut (10) and the tail sleeve (11).

10. The locking outlet method of the tail nut locked modular reinforced lightning protection connector assembly according to claims 1-9, comprising the steps of:

Step S1: assembling a cable (15) and a tail nut locking plug; a tail nut (10), a snap ring (12), a tail sleeve (11) and a cover plate (9) are sequentially sleeved on the cable (15); a cable shielding layer (8) at the end part of the cable (15) is in compression joint with a crystal head (7), two semicircular rings (5) are symmetrically clamped and installed at two sides, the two semicircular rings (5) form a protection ring, and the cable and the protection ring are installed in an installation groove of the plug shell (1); screwing down a second screw (19) to connect the cover plate (9) and the plug shell (1); screwing a tail nut (10) on a tail sleeve (11) through threaded connection;

Step S2: the cable (15) and the tail nut locking plug are locked and fixed; continuously screwing the tail nut (10), moving the tail nut (10) towards the cover plate (9), pressing the end part (14) to extrude the latch (13) of the snap ring (12) towards the axial direction of the cable (15), and locking the cable (15) by the latch (13); screwing a locking screw (17) into the second threaded hole (16), wherein the locking screw (17) abuts against the tail sleeve (11) to limit the movement of the tail nut (10) relative to the tail sleeve (11);

Step S3: and the crystal head (7) is spliced with the lightning protection device, the first screw (2) is screwed, and the tail nut locking plug and the lightning protection device are fixedly connected.

Technical Field

the invention relates to the technical field of connectors, in particular to a modularized reinforced lightning protection connector component locked by a tail nut.

background

The lightning protection electric connector of the existing vehicle-mounted system is mostly connected by terminal crimping, the contact point is exposed and insecure, the mechanical performance and the environment resistance of the product are poor, the existing signal lightning protection product is a guide rail fixed installation product, the whole product is free of sealing treatment, and the environment adaptability is poor.

Disclosure of Invention

In view of the above analysis, the present invention aims to provide a tail nut locked modularized reinforced lightning protection connector assembly, which is used to solve the problems that the existing lightning protection connector product has exposed and weak contact points, large space, heavy weight, easy contact failure or connection point fracture when the bare wire crimping outgoing line vibrates, and the existing product mostly adopts the printed board welding mode to connect the whole line, and the product is not easy to repair after failure.

The purpose of the invention is mainly realized by the following technical scheme:

A modular reinforced lightning protection connector assembly locked by a tail nut, comprising: the connector, the lightning protection device and the tail nut locking plug; the connector is used for connecting the lightning protection device and a power supply, one end of the lightning protection device is inserted into the connector, and the other end of the lightning protection device is connected with a cable;

The tail nut locking plug includes: the plug main body and the tail nut locking structure; the plug main body is sleeved on the cable, and the cable is locked and fixed through the tail nut locking structure; the lightning protection device is fixedly connected with the plug main body;

Tail nut locking structure includes: a tail sleeve, a snap ring and a tail nut;

the tail sleeve and the snap ring are sleeved on the cable in parallel; the tail nut is sleeved outside the tail sleeve and the clamping ring, one end of the tail nut is in threaded connection with the tail sleeve, and the other end of the tail nut is provided with a frustum-shaped locking end portion which is in contact with the clamping ring.

specifically, a cable shielding layer at one end of the cable is connected with a crystal head in a compression joint mode, and the crystal head is inserted into the lightning protection device; the other end of the cable is connected with the terminal equipment.

specifically, the plug main body includes: a plug housing, a protective ring, and a cover plate; the plug shell is fixedly connected with the lightning protection device through a first screw; the cover plate is fixedly connected with the plug shell through a second screw.

Specifically, the protection ring is sleeved outside the cable shielding layer; the protection ring comprises two symmetrically spliced semicircular rings; a clamping groove is formed in the semicircular ring, one end of the crystal head is inserted into a signal interface on the lightning protection device, and the other end of the crystal head is arranged in the clamping groove; the plug shell is provided with an installation groove, and the protection ring is arranged in the installation groove.

Specifically, a plurality of clamping teeth are arranged on the clamping ring; the inner side of the latch is provided with a dentate structure, and the outer side is provided with a chamfer.

specifically, the snap ring and the tail sleeve are clamped through a sawtooth structure or are of an integral structure.

Specifically, the inside of the locking end portion is in contact with the chamfer on the outside of the latch.

Specifically, the cover plate and the tail sleeve are fixedly connected or are of an integral structure.

Specifically, a second threaded hole is formed in the tail nut, a locking screw is installed in the second threaded hole, and the locking screw is used for limiting relative movement between the tail nut and the tail sleeve.

The invention discloses a wire outlet locking method of a tail nut locked modular reinforced lightning protection connector assembly, which comprises the following steps:

Step S1: assembling a cable and a tail nut locking plug; the cable is sequentially sleeved with a tail nut, a snap ring, a tail sleeve and a cover plate; the cable shielding layer at the end part of the cable is pressed with a crystal head, two sides of the cable shielding layer are symmetrically clamped and installed with two semicircular rings, the two semicircular rings form a protection ring, and the cable and the protection ring are installed in the installation groove of the plug shell; screwing down the second screw to connect the cover plate and the plug shell; screwing the tail nut on the tail sleeve through threaded connection;

Step S2: locking and fixing the cable and the tail nut locking plug; continuously screwing the tail nut, moving the tail nut towards the cover plate, pressing the clamping teeth of the clamping ring towards the axial direction of the cable at the end part, and locking the cable by the clamping teeth; screwing a locking screw into the second threaded hole, wherein the locking screw abuts against the tail sleeve to limit the movement of the tail nut relative to the tail sleeve;

Step S3: and the crystal head is inserted into the lightning protection device, the first screw is screwed down, and the tail nut locking plug and the lightning protection device are fixedly connected.

The invention has at least one of the following beneficial effects:

1. the modularized installation and the disassembly are convenient for maintenance. The connector, the lightning protector and the tail nut locking plug of the wire outlet device are all of modular reinforced structures, the main body structures of the shells of the components are connected through screws, the internal signal lines are installed in an inserting mode, and the components can be installed in a modular mode and the reliability of line contact is guaranteed. The modularized installation is convenient for installation and disassembly, when a certain part breaks down, the broken part can be replaced only, the maintenance is convenient, and the resources are saved.

2. The tail nut locking plug protects the cable. The cable for transmitting signals and the lightning protector are connected through the plug of the crystal head, and the protective ring is sleeved outside the connection part of the crystal head and the cable, so that the cable connector with a weak structure can be protected.

3. And the tail nut is locked to ensure the connection reliability of the cable. According to the invention, the tail nut locking structure is arranged, the tail nut is screwed to further compress the clamping ring to enable the clamping ring to clamp the cable, the cable and the plug are fastened into a whole by the tail nut locking structure, and the plug main body is fastened with the lightning arrester by the screw, so that the crystal head can be always kept in watching connection with the lightning arrester when the external cable is pulled, and the cable shielding layer with a weak internal structure cannot be influenced by pulling stress.

4. compact structure, small volume and small occupied space. The lightning protection connector assembly has the advantages of compact structure, small occupied space and small volume, so that the lightning protection connector assembly is convenient to mount and dismount, the mounting space can be saved, and the applicability of products is improved.

in the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.

FIG. 1 is a tail nut locking lightning protection connector assembly of the present invention;

FIG. 2 is an exploded view of the tail nut locking plug of the present invention;

Fig. 3 is a cross-sectional view of the tail nut locking plug.

Reference numerals:

1-a plug housing; 2-a first screw; 3-a first threaded hole; 4-mounting grooves; 5-semicircular ring; 6-a clamping groove; 7-a crystal head; 8-cable shielding layer; 9-cover plate; 10-tail nut; 11-tail sleeve; 12-a clamping ring; 13-latch; 14-locking the end; 15-a cable; 16-a second threaded hole; 17-locking screws; 18-an elastic ring; 19-second screw.

Detailed Description

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.

One embodiment of the present invention discloses a tail nut locked modular reinforced lightning protection connector assembly, as shown in fig. 1, comprising: connector, lightning protection device and tail nut locking plug.

the connector is fixedly connected with the lightning protection device through screws, the connector is used for connecting a power supply with the lightning protection device, and the internal device of the connector is communicated with the internal circuit of the lightning protection device through insertion.

The lightning protection device has a lightning protection function, and a lightning protection component is arranged in the lightning protection device. The lightning protection device can be connected with the cable in a pluggable mode, specifically, the cable shielding layer 8 at one end of the cable 15 is connected with the crystal head 7 in a compression joint mode, the crystal head 7 is connected with a signal interface on the lightning protection device in a plugging mode, and the other end of the cable 15 is connected with the terminal device.

the cable 15 and the lightning protection device are locked and fixed through a tail nut locking plug.

Specifically, the tail nut locking plug includes: plug main part and tail nut locking structure.

The tail nut locking plug is sleeved outside the cable 15, and the tail nut locking structure locks and fixes the cable 15, so that the cable 15 and the tail nut locking plug are fastened into a whole. The cable 15 is connected with the lightning protection device in an inserting mode, and the lightning protection device is fixedly connected with the plug main body of the tail nut locking plug.

Specifically, the plug main body includes: a plug housing 1, two semi-circular rings 5 and a cover plate 9.

The plug shell 1 is fixedly connected with the lightning protection device through a first screw 2. The semicircle ring 5 of two symmetries amalgamations constitutes the protection ring of the crimping position of cable 15, establishes the protection ring at the outside cover of cable shielding layer 8 promptly, specifically, for the ease of the installation, sets up the protection ring into two semicircle rings 5 of symmetry amalgamation, sets up draw-in groove 6 on the semicircle ring 5, and signal interface grafting on quartzy head 7 one end and the lightning protection device, the other end setting is in draw-in groove 6. The protective ring serves to protect the cable shield 8 from the external environment at the connection of the inner crystal head 7 and the cable 15.

The plug housing 1 is provided with an installation groove 4, the protection ring is installed in the installation groove 4 and sealed by a cover plate 9, the cover plate 9 can limit the movement of the protection ring in the installation groove 4, and the cover plate 9 is also provided with a through hole for sleeving the cable 15. The crystal head 7 extends out from the other end of the plug shell 1, which is not provided with the mounting groove 4, and can be inserted and mounted with a lightning protection device.

Specifically, the tail nut locking structure includes: tail sleeve 11, snap ring 12 and tail nut 10.

Tail nut locking structure is fixed with cable 15 and plug main part locking, and the concrete principle is:

The tail sleeve 11 and the cover plate 9 are fixedly connected or are of an integral structure, namely the tail sleeve 11 and the cover plate 9 are welded or are the same part. The tail sleeve 11 is sleeved outside the cable 15, the snap ring 12 is sleeved outside the cable 15 and installed in parallel with the tail sleeve 11, specifically, the tail sleeve 11 and the cover plate 9 are sleeved outside the cable 15 and in close contact with the cable 15, namely, the snap ring 12 and the tail sleeve 11 are sleeved on the cable, and the inner hole diameters of the snap ring 12 and the tail sleeve 11 are matched with the outer diameter of the cable 15.

The tail nut 10 is sleeved outside the clamping ring 12, one end of the tail nut 10 is connected with the tail sleeve 11 through threads, the other end of the tail nut is provided with a locking end portion 14, and the locking end portion 14 is of a frustum shape. The tail nut 10 encloses the snap ring 12 inside, as shown in fig. 2, and the locking end 14 is in direct contact with the cable 15. And the tail nut 10 is continuously screwed, and the locking end part 14 at the tail part of the tail nut 10 presses the snap ring 12 to deform and extrude the cable 15, so that the cable 15 is further locked and fixed.

Furthermore, a plurality of clamping teeth 13 are arranged on the clamping ring 12, a tooth-shaped structure is arranged on the inner side of each clamping tooth 13, and a chamfer is arranged on the outer side of each clamping tooth. The inside surface of the locking end 14 is in contact with the chamfer on the outside of the snap ring 12.

During the use, rotatory tail nut 10 makes it be connected with tail sleeve pipe 11, and when the installation was accomplished, snap ring 12 prevented tail nut 10 and continues to rotate, or, snap ring 12 prevented tail nut 10 to move to apron 9 direction, at this moment, continue to rotate tail nut 10, then the outside chamfer plane of latch 13 on the internal surface extrusion snap ring 12 of the locking tip 14 of tail nut 10 afterbody, latch 13 can be to the axis direction bending deformation of cable 15 under the squeezing action that compresses tightly tip 14, presss from both sides tight cable 15.

The inboard dentate structure of latch 13 can press from both sides tight cable 15 under the squeezing action of locking tip 14, and is further, makes cable 15 and plug main part realize the fastening connection, avoids cable 15 to remove for plug main part, again because plug main part and lightning protection device pass through first screw 2 fixed connection, tail nut locking structure also is fixed connection with plug main part, consequently, when drawing taking place externally, guarantees that quartzy head 7 can keep being connected with lightning protection device's reliability throughout.

Specifically, as shown in fig. 2, the snap ring 12 and the tail sleeve 11 are sleeved on the cable 15 in parallel, and the snap ring 12 and the tail sleeve 11 are connected in a snap-fit manner through a sawtooth structure or are integrated into a whole.

When the snap ring 12 is engaged with the tail sleeve 11 through the saw teeth: snap ring 12 all sets up the sawtooth structure with tail sleeve pipe 11's tip, and snap ring 12 passes through the sawtooth structure block with tail sleeve pipe 11, can prevent when tail nut 10 is rotatory screwed up that snap ring 12 from taking place to rotate.

When the snap ring 12 and the tail sleeve 11 are of an integrated structure: because the tail nut 10 is sleeved outside the snap ring 12 and is in threaded installation with the tail sleeve 11, threads are arranged on the tail sleeve 11, and in order to facilitate installation, the outer diameter of the tail sleeve 11 is larger than that of the snap ring 12.

preferably, in order to achieve the function of the tail nut 10 pressing the latch 13 inwards, the inner hole diameter of the tail nut 10 is designed to be distributed in a stepped shape, that is, the inner hole diameter of the tail nut 10 is gradually reduced from the end of the tail nut 10 connected with the tail sleeve 11 to the end of the tail nut contacted with the latch 13.

As shown in FIG. 3, one end of the tail nut 10 is designed with an internal thread to be connected with an external thread on the tail sleeve 11, and the diameter of the inner hole of the part where the tail nut 10 is connected with the tail sleeve 11 is the largest.

The middle part of the tail nut 10 is sleeved with the snap ring 12, that is, the inner hole diameter of the middle part of the tail nut 10 is matched with the outer diameter of the snap ring 12.

The other end of the tail nut 10 or the tail end of the tail nut 10 is provided with a locking end portion 14, the locking end portion 14 is of a frustum-shaped tubular structure, in order to guarantee that the locking end portion 14 can press the latch 13 to enable the latch 13 to bend inwards to lock the cable 15, the inner hole diameter of the small end of the locking end portion 14 is designed to be matched with the outer diameter of the cable 15, and the inner hole diameter of the large end of the locking end portion 14 is matched with the outer diameter of the snap ring 12.

Further, as shown in fig. 3, an elastic ring 18 is provided between the tail sleeve 11 and the tail nut 10, and the elastic ring 18 is made of an elastic rubber material.

On one hand, after the installation of the tail sleeve 11 and the tail nut 10 is completed, the elastic ring can provide a space for further locking the tail nut 10, and the distance that the tail nut 10 moves towards the cover plate 9 is the distance compressed by the elastic ring 18. On the other hand, the elastic ring 18 can prevent the tail nut 10 from being excessively screwed, and the distance of the tail nut 10 moving towards the cover plate 9 is the distance compressed by the elastic ring 18, so that the displacement of the tail nut 10 towards the cover plate 9 is limited, the compression effect on the snap ring 12 is also limited, the excessive compression of the cable 15 caused by the deformation of the snap tooth 13 is avoided, and the damage to the cable 15 is further avoided.

Furthermore, a first threaded hole 3 is formed in the plug housing 1, and the cover plate 9 is fixedly connected with the plug housing 1 through a second screw 19; the cover plate 9 is fixedly connected with the tail sleeve 11 or is of an integral structure.

the tail nut locking plug is tightly connected with the lightning protection device through the second screw 19, the cable 15 and the main structure of the tail nut locking plug are fastened into a whole through the tail nut 10 and the snap ring 12, so that when the external vibration or pulling is generated, the crystal head 7 and the cable shielding layer 8 inside the tail nut locking plug are not influenced, the reliable connection between the crystal head 7 and the lightning protection device can still be kept, and the reliability of the lightning protection device is improved.

that is to say, tail nut locking plug's plug main part and cable 15 are as an organic whole through tail nut locking structure locking, guarantee quartzy head 7 all the time with the reliable connection of the signal interface on the lightning protection device, guarantee contact reliability to draw the stress that draws or the vibration produces can not transmit the crimping department of cable shielding layer 8 and quartzy head 7, avoid drawing the hookup location that draws or the vibration leads to cable 15 and take place to destroy the stability that influences transmission signal.

further, a second threaded hole 16 is formed in the tail nut 10, and a locking screw 17 is installed in the second threaded hole 16, wherein the locking screw 17 is used for limiting the relative movement between the tail nut 10 and the tail sleeve 11.

that is to say, screw locking screw 17 into second screw hole 16 on tail nut 10, screw locking screw 17, locking screw 17 supports and leans on tail sleeve pipe 11 and can provide certain locking force/pretightning force, and locking screw 17 can prevent that tail nut 10 breaks away from or becomes flexible from tail sleeve pipe 11, keeps tail nut 10 to compress tightly snap ring 12 all the time, and further, keeps snap ring 12 chucking cable 15 all the time.

When the method is implemented, the locking method of the modularized reinforced lightning protection connector component locked by the tail nut is characterized by comprising the following steps:

Step S1: the cable 15 is sequentially sleeved with a tail nut 10, a snap ring 12, a tail sleeve 11 and a cover plate 9; the quartzy head 7 of crimping on the cable shielding layer 8 of 15 tip of cable, bilateral symmetry block installation semicircle ring 5, two semicircle rings 5 constitute the guard ring, install the cable and guard ring in the mounting groove of plug shell 1.

Step S2: the second screw 19 is screwed down to connect the cover plate 9 and the plug housing 1; the tail nut 10 is screwed to the tail sleeve 11 by a screw connection. The cover plate 9 is connected with the plug housing 1 and is pressed above the mounting groove 4, and a protection ring consisting of two semicircular rings 5 is enclosed in the mounting groove 4 of the plug housing 1 and is used for protecting the cable shielding layer 8.

The tail nut 10 is continuously screwed, the clamping teeth 13 of the clamping ring 12 are extruded towards the axial direction of the cable 15 through the pressing end part 14, and the cable 15 is tightly locked by the clamping teeth 13.

Specifically, the cover plate 9 and the tail nut 10 are respectively located on two sides of the tail sleeve 11, and when the tail nut 10 is screwed in a rotating mode, the tail nut 10 moves towards the cover plate 9. Because the tail sleeve 11 and the snap ring 12 are sleeved on the cable 15 in parallel, the tail sleeve 11 blocks the snap ring 12 from moving towards the cover plate. Therefore, when the tail nut 10 moves towards the cover plate 9, the tail nut 10 extrudes the latch 13 on the snap ring 12, specifically, the inner surface of the compressing end portion 14 at the tail portion of the tail nut 10 extrudes the external chamfer at the tail end of the latch 13, the latch 13 is bent inwards under the compressing action of the tail nut 10 to deform, and then the cable 15 is compressed to combine the cable 15 and the tail nut locking plug into a whole.

And screwing a locking screw 17 into the second threaded hole 16, wherein the locking screw 17 abuts against the tail sleeve 11 to limit the movement of the tail nut 10 corresponding to the tail sleeve 11. Locking screw 17 supports on tail sleeve 11 to can provide certain pretightning force, locking screw 17 can prevent that tail nut 10 breaks away from or not hard up from tail sleeve 11, makes tail nut 10 remain the compressing tightly effect to snap ring 12 throughout, and further, guarantees that snap ring 12 can lock cable 15.

step S3: the crystal head 7 is inserted into the lightning protection device, and the first screw 2 is screwed down to fixedly connect the tail nut locking plug and the lightning protection device. So far, accomplish the connection of cable and lightning protection device.

Because the cable is fixed as an organic whole with tail nut locking plug through snap ring 12 fastening, and tail nut locking plug passes through first screw 2 fixed connection with the lightning protection device, consequently, can keep the reliable installation between quartzy head 3 and the lightning protection device all the time, further ensure cable transmission signal's stability.

And a connector is inserted at the other end of the lightning protector, the connector is connected with a power supply to realize signal communication, and the other end of the cable 15 is connected with terminal equipment to realize transmission of electromagnetic signals.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.