A radio frequency coaxial cable with a drain wire

Abstract

The application relates to a radio frequency coaxial cable with a drainage line, which divides a cable main body into two parts, and connects the two parts through a joint; the joint is connected with a grounding nail; the grounding nail is inserted into the ground to realize grounding; a copper band is wrapped around an insulating layer in a shielding layer, and the copper band is wrapped around the insulating layer for a length that is long enough to be used for connecting the grounding nail; a clamping groove of the grounding nail is convenient for the copper band to be arranged; in this way, the copper band can be gradually wound on a plug-in part during rotation of the grounding nail, so that the copper band is fully in contact with the grounding nail; therefore, when the shielding layer is struck by lightning, electric charges can be quickly drained and discharged from the grounding nail, thereby achieving the effect of lightning protection.

Description

Technical Field

[0001] This application belongs to the field of radio frequency coaxial cable technology, and in particular relates to a radio frequency coaxial cable with a bleeder. Background Technology

[0002] Radio frequency (RF) coaxial cables possess both RF signal transmission and spatial radiation / reception capabilities, making them widely used in challenging environments such as subways, tunnels, and mines where wireless signal coverage is difficult. These applications typically involve high humidity and complex environments, making them susceptible to lightning strikes and static electricity buildup. Existing RF coaxial cables generally consist of an inner conductor, an insulation layer, an outer conductor, and an outer sheath, lacking a dedicated grounding and discharge structure. When lightning strikes or electrostatic discharge occur, the charge accumulated on the outer conductor surface cannot be quickly dissipated, potentially damaging downstream communication equipment and posing safety risks to on-site personnel. Therefore, there is an urgent need in this field for an RF coaxial cable that provides reliable grounding and lightning and static electricity protection. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a radio frequency coaxial cable with a bleed line, thereby solving the problem of difficult design and assembly of lightning protection and anti-static structure for radio frequency coaxial cables in the prior art.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A radio frequency coaxial cable with a bleeder, comprising:

[0006] The cable body comprises, from the inside out, an inner conductor, an insulation layer, a shielding layer, and a sheath layer. The shielding layer is formed by copper tape wrapped around the insulation layer, and both ends of the copper tape extend beyond the ends of the insulation layer. The cable body is divided into a front section and a rear section.

[0007] A connector that connects and conducts communication between the front section and the rear section; the connector includes a male head and a female head, which are respectively connected to the front section and the rear section, and are detachably fixedly connected to each other;

[0008] A grounding spike is used to insert into the ground to achieve grounding.

[0009] The male connector includes a plug body and a grounding tube. The grounding tube is vertically connected to one side of the plug body, and the interior of the grounding tube is in communication with the interior of the plug body.

[0010] The grounding nail includes a nail body and a plug portion, the plug portion being located at the opposite end of the tip of the nail body, the plug portion being threaded to the grounding pipe; the plug portion has a slot extending radially therethrough, and the copper strips of the front section and the rear section both pass through the slot and are coiled around the plug portion.

[0011] Preferably, in the radio frequency coaxial cable with a bleed line of the present invention, the width of the slot gradually decreases from the outside to the inside along the radial direction of the plug portion.

[0012] Preferably, in the radio frequency coaxial cable with a bleed line of the present invention, a portion of the inner wall of the grounding tube has an internal thread, and a portion of the outer wall of the plug portion has an external thread, wherein the external thread matches the internal thread.

[0013] Preferably, in the radio frequency coaxial cable with a bleed line of the present invention, a sealing ring is provided at the connection between the grounding tube and the plug portion.

[0014] Preferably, in the radio frequency coaxial cable with bleed line of the present invention, the male connector further includes a buffer pad, the buffer pad being connected to one side of the plug body, and the grounding tube and the buffer pad being located on opposite sides of the plug body.

[0015] Preferably, in the radio frequency coaxial cable with a bleed line of the present invention, the plug body has a socket on one side and a protrusion on the side of the buffer pad. By inserting the protrusion into the socket, the protrusion can be connected to the plug body.

[0016] Preferably, the connector of the radio frequency coaxial cable with a bleed line of the present invention is made of stainless steel.

[0017] Preferably, in the radio frequency coaxial cable with a bleed line of the present invention, the buffer pad is made of polyurethane.

[0018] Preferably, in the radio frequency coaxial cable with a bleed line of the present invention, the grounding pin is made of carbon steel or copper-plated steel.

[0019] Preferably, in the radio frequency coaxial cable with a bleed line of the present invention, the width of the slot is 2 to 5 times the thickness of the copper strip.

[0020] The beneficial effects of this invention are as follows: The cable body is divided into two parts, connected in the middle by a connector. The connector is connected to a grounding pin, which, when inserted into the ground, enables grounding. The shielding layer is constructed by wrapping copper tape around the insulation layer, with the excess length of the copper tape used to connect to the grounding pin. The groove in the grounding pin facilitates the insertion of the copper tape. This design allows the copper tape to gradually coil around the connector during the rotation of the grounding pin, ensuring full contact between the copper tape and the grounding pin. Therefore, when the shielding layer is struck by lightning, the charge can be quickly conducted and discharged through the grounding pin, achieving a lightning protection effect. Attached Figure Description

[0021] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the radio frequency coaxial cable structure of the bleeder in this embodiment;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the cable body in this embodiment;

[0024] Figure 3 This is a schematic diagram of the connection structure between the connector and the grounding pin in this embodiment;

[0025] Figure 4 This is a schematic diagram of the connector and grounding nail structure in this embodiment;

[0026] Figure 5 This is a schematic diagram of the cross-sectional shape of the insertion part in this embodiment;

[0027] Figure 6 This is a schematic diagram of the copper tape wrapping structure in the cable body of this embodiment;

[0028] Figure 7 This is a schematic diagram of the connection method between the copper strip and the plug in this embodiment;

[0029] Figure 8 This is a schematic diagram of the state in which the copper strip is coiled on the plug in this embodiment;

[0030] Figure 9 This is a schematic diagram of the grounding nail and male threaded connection structure in this embodiment.

[0031] The attached figures are labeled as follows:

[0032] 11. Inner conductor; 12. Insulation layer; 13. Shielding layer; 131. Copper strip; 14. Sheath layer;

[0033] 101. First part; 102. Second part;

[0034] 200. Connector; 201. Male connector; 202. Female connector;

[0035] 2011. Plug body; 2012. Grounding tube; 2013. Socket; 2014. Buffer pad;

[0036] 2015, bump; 2016, internal thread;

[0037] 300, grounding stud;

[0038] 301. Nail body; 302. Insertion part;

[0039] 3021, slot; 3022, external thread; 3023, sealing ring. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0041] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] In the accompanying drawings, for clarity, the length, area, volume, gap dimensions, and relative dimensions of components, as well as the included angles and relative positional relationships between components, may be exaggerated. The same reference numerals denote the same elements throughout the drawings.

[0044] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] This embodiment provides a radio frequency coaxial cable with a bleeder, such as Figures 1-4 As shown, it includes: cable body, connector 200 and grounding pin 300.

[0046] like Figure 2 As shown, the cable body, from the inside out, includes an inner conductor 11, an insulation layer 12, a shielding layer 13, and a sheath layer 14, as follows: Figure 6 As shown, the shielding layer 13 is formed by a copper strip 131 wrapped around the insulating layer 12, and both ends of the copper strip 131 extend beyond the ends of the insulating layer 12.

[0047] like Figure 1 , Figure 3 As shown, the cable body is divided into a front section 101 and a rear section 102; a connector 200 connects and conducts between the front section 101 and the rear section 102; the connector 200 includes a male head 201 and a female head 202, which are respectively connected to the front section 101 and the rear section 102, and the male head 201 and the female head 202 are detachably fixedly connected.

[0048] The grounding nail 300 is used to be inserted into the ground to achieve grounding;

[0049] like Figure 4 As shown, the male connector 201 includes a plug body 2011 and a grounding tube 2012. The grounding tube 2012 is vertically connected to one side of the plug body 2011, and the interior of the grounding tube 2012 is connected to the interior of the plug body 2011.

[0050] like Figure 4 As shown, the grounding nail 300 includes a nail body 301 and a plug portion 302. The plug portion 302 is located at the opposite end of the tip of the nail body 301, and the plug portion 302 can be threadedly connected to the grounding pipe 2012. The plug portion 302 has a groove 3021 that extends radially through it, such as... Figure 7 , Figure 8 As shown, the copper strips 131 of the front section 101 and the rear section 102 both pass through the slot 3021 and are coiled around the insertion part 302.

[0051] The radio frequency coaxial cable with a bleeder in this embodiment divides the cable body into two parts (front section 101 and rear section 102), connected by a connector 200. The connector 200 connects to a grounding pin 300, which is inserted into the ground to achieve grounding. The shielding layer 13 is constructed by wrapping copper tape 131 around the insulation layer 12, with the excessive length of the wrapped copper tape 131 used to connect to the grounding pin 300. This wrapping method does not add any steps and helps control production costs. The slot 3021 of the grounding pin 300 facilitates the insertion of the copper tape 131. With this design, as the grounding pin 300 rotates, the copper tape 131 can gradually coil around the insertion part 302, ensuring full contact between the copper tape 131 and the grounding pin 300. Therefore, when the shielding layer 13 is struck by lightning, the copper tape 131 is effectively equivalent to a bleeder, and the charge can be quickly conducted and discharged from the grounding pin 300, achieving the effect of lightning protection.

[0052] The assembly steps for the RF coaxial cable with a bleed line in this embodiment are as follows:

[0053] First, connect the front section 101 and the rear section 102 to the male connector 201 and the female connector 202 respectively.

[0054] like Figure 7As shown, insert the plug part 302 of the grounding nail 300 into the grounding tube 2012, but do not tighten it. Note that the extension direction of the slot 3021 should be adjusted to be consistent with the extension direction of the cable body so that the copper strip 131 can be inserted.

[0055] Then, insert the ends of the copper strips 131 extending beyond the insulation layer 12 in the front section 101 and the rear section 102 into the slots 3021 of the insertion part 302, and rotate the grounding pin 300, as shown. Figure 8 As shown, the copper strips 131 of the front section 101 and the rear section 102 are both tensioned to a certain extent and coiled around the plug-in part 302 to achieve electrical connection. During the process, the grounding nail 300 also completes the threaded connection with the grounding pipe 2012.

[0056] Finally, connect the male connector 201 and the female connector 202 to complete the assembly.

[0057] The RF coaxial cable with a bleeder in this embodiment is laid as follows: according to the required laying length, select several front section 101 and rear section 102, as well as a corresponding number of male connectors 201 and female connectors 202, and lay them in a loop by connecting the front section 101, male connector 201, female connector 202, rear section 102, male connector 201, and female connector. Then, connect a grounding nail 300 at each male connector 201 and drive the grounding nail 300 into the ground to complete the grounding treatment.

[0058] In an alternative embodiment, such as Figure 5 As shown, along the radial direction of the insertion portion 302, the width of the slot 3021 gradually decreases from the outside to the inside. This design reduces the difficulty of inserting the copper strip 131 into the slot 3021 during assembly operations.

[0059] In an alternative embodiment, such as Figure 9 As shown, part of the inner wall of the grounding tube 2012 has an internal thread 2016, and part of the outer wall of the plug-in part 302 has an external thread 3022, which matches the internal thread 2016. This design facilitates the fixing of the plug-in part 302 to the grounding tube 2012. During the rotation of the plug-in part 302, it tightens with the grounding tube 2012 on the one hand, and completes the natural coiling of the copper strip 131 on the other hand.

[0060] In an alternative embodiment, such as Figure 9 As shown, a sealing ring 3023 is provided at the connection between the grounding pipe 2012 and the plug part 302. When the plug part 302 is connected to the grounding pipe 2012, the sealing ring 3023 fills the gap between the two to prevent water from entering the connector 200 in outdoor environments.

[0061] In an alternative embodiment, such as Figure 3As shown, the male connector 201 also includes a buffer pad 2014, which is connected to one side of the connector body 2011. The grounding tube 2012 and the buffer pad 2014 are located on opposite sides of the connector body 2011. The function of the buffer pad 2014 is to facilitate the driving of the grounding nail 300 into the ground. By hammering the buffer pad 2014, the grounding nail 300 can be driven into the ground. During this process, the buffer pad 2014 can protect the connector 200 and prevent it from deforming under stress.

[0062] In an optional embodiment, the connector 200 is made of stainless steel to reduce corrosion in outdoor environments. Stainless steel has good mechanical properties and is not easily deformed under hammering.

[0063] In an optional embodiment, the cushioning pad 2014 is made of polyurethane, which has better cushioning performance.

[0064] In an alternative embodiment, such as Figure 4 As shown, the plug body 2011 has a socket 2013 on one side and a bump 2015 on one side of the buffer pad 2014. By inserting the bump 2015 into the socket 2013, the bump 2015 can be connected to the plug body 2011. This structure allows the buffer pad 2014 to be easily installed on one side of the plug body 2011.

[0065] In an optional embodiment, the grounding stud 300 is made of carbon steel or copper-plated steel, which can resist the effects of soil corrosion.

[0066] In an optional embodiment, the width of the slot 3021 is 2 to 5 times the thickness of the copper strip 131. This satisfies the need for two copper strips 131 to be threaded simultaneously, and avoids excessive width from affecting the winding effect of the copper strip 131.

[0067] Based on the above-described preferred embodiments according to this application, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A radio frequency coaxial cable with a bleeder, characterized in that, include: The cable body comprises, from the inside out, an inner conductor (11), an insulation layer (12), a shielding layer (13), and a sheath layer (14). The shielding layer (13) is formed by a copper strip (131) wrapped around the insulation layer (12), and the two ends of the copper strip (131) extend beyond the ends of the insulation layer (12). The cable body is divided into a front section (101) and a rear section (102). A connector (200) connects and conducts communication between the front section (101) and the rear section (102); the connector (200) includes a male connector (201) and a female connector (202), the male connector (201) and the female connector (202) are respectively connected to the front section (101) and the rear section (102), and the male connector (201) and the female connector (202) are detachably fixedly connected; Grounding pin (300) is used to be inserted into the ground to achieve grounding; The male connector (201) includes a plug body (2011) and a grounding tube (2012). The grounding tube (2012) is vertically connected to one side of the plug body (2011), and the interior of the grounding tube (2012) is connected to the interior of the plug body (2011). The grounding nail (300) includes a nail body (301) and a plug portion (302), the plug portion (302) being located at the opposite end of the tip of the nail body (301), the plug portion (302) being threaded to the grounding pipe (2012); the plug portion (302) having a slot (3021) extending radially therethrough, the copper strips (131) of the front section (101) and the rear section (102) passing through the slot (3021) and coiled around the plug portion (302).

2. The radio frequency coaxial cable with a bleeder line according to claim 1, characterized in that, Along the radial direction of the insertion portion (302), the width of the slot (3021) gradually decreases from the outside to the inside.

3. The radio frequency coaxial cable with a bleeder line according to claim 1, characterized in that, The grounding tube (2012) has an internal thread (2016) on a portion of its inner wall, and the plug part (302) has an external thread (3022) on a portion of its outer wall, the external thread (3022) matching the internal thread (2016).

4. The radio frequency coaxial cable with a bleeder line according to claim 3, characterized in that, A sealing ring (3023) is provided at the connection between the grounding pipe (2012) and the plug part (302).

5. The radio frequency coaxial cable with a bleeder line according to any one of claims 1-4, characterized in that, The male connector (201) also includes a buffer pad (2014), which is connected to one side of the plug body (2011), and the grounding tube (2012) and the buffer pad (2014) are located on opposite sides of the plug body (2011).

6. The radio frequency coaxial cable with a bleeder line according to claim 5, characterized in that, The plug body (2011) has a socket (2013) on one side and a bump (2015) on one side of the buffer pad (2014). By inserting the bump (2015) into the socket (2013), the bump (2015) can be connected to the plug body (2011).

7. The radio frequency coaxial cable with a bleeder line according to any one of claims 1-4, characterized in that, The connector (200) is made of stainless steel.

8. The radio frequency coaxial cable with a bleeder line according to claim 5, characterized in that, The cushioning pad (2014) is made of polyurethane.

9. The radio frequency coaxial cable with a bleeder line according to any one of claims 1-4, characterized in that, The grounding nail (300) is made of carbon steel or copper-plated steel.

10. The radio frequency coaxial cable with a bleeder according to any one of claims 1-4, characterized in that, The width of the slot (3021) is 2 to 5 times the thickness of the copper strip (131).

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