A radio frequency test cable assembly with color markings

Abstract

The present invention discloses a radio frequency test cable assembly with color markings, belonging to the field of microwave communication technology. It includes a housing, a radio frequency connector, a fixed bushing connecting the housing and the radio frequency connector, a coaxial cable, and a welding bushing. An armor made of a metal material is provided outside the coaxial cable, and the welding bushing is welded outside the armor of the coaxial cable. The fixed bushing is sleeved at the end of the coaxial cable, and threaded portions for connecting the radio frequency connector and the outer ring of the housing are provided at both ends. The housing is made of a metal material and is sleeved outside the fixed bushing. An identification ring for distinguishing the specifications of the radio frequency connector is provided on the outer surface of the housing, and each color of the identification ring corresponds to a specification of the port of a radio frequency test assembly. The present invention has good protection effect, firm connection, is not easily damaged, and is easy to distinguish the specifications of the radio frequency connector.

Description

Technical Field

[0001] The present invention relates to the technical field of microwave communication, and particularly relates to a radio frequency test cable assembly with color markings. Background Art

[0002] Radio frequency test cable assemblies are a very commonly used component type in microwave and radio frequency interconnection systems. However, currently available cable assemblies for testing on the market are generally divided into two types: special-purpose and economy. Special-purpose test components are very expensive and generally cannot be customized according to the specific needs of customers. The other type of economy test component can be customized according to customer requirements, but because of its simple structure, the protection mechanisms of the radio frequency connectors and the armored cables are weak, the connections are not firm, and it cannot effectively protect the radio frequency test cable assembly, resulting in a short service life and unstable test parameters. Customers often need to replace them frequently, increasing costs.

[0003] In addition, there are various port types for radio frequency test cable assemblies. It is very difficult to visually distinguish the port specifications of test cable assemblies from the appearance on the current market. Especially during multi-system assembly, it is easy to cause connection errors and damage to equipment or interfaces. Summary of the Invention

[0004] Technical Objective: Aiming at the deficiencies of the prior art, the present invention discloses a radio frequency test cable assembly with color markings that has a firm connection, high reliability, and can easily distinguish the port specifications of radio frequency test cable assemblies.

[0005] Technical Solution: To achieve the above technical objective, the present invention adopts the following technical solution:

[0006] A radio frequency test cable assembly with color markings includes a radio frequency connector, a fixed bushing, a welding bushing, a housing, and a coaxial cable. The outer surface of the coaxial cable is provided with an armored layer made of metal material. The housing is sleeved at the end of the coaxial cable. The welding bushing is located in the gap between the housing and the coaxial cable and is welded to the armored layer outside the coaxial cable. The end of the coaxial cable communicates with the radio frequency connector. The fixed bushing is located between the welding bushing and the radio frequency connector and is fixed inside the housing. The outer sides of both ends are respectively connected to the lower part of the radio frequency connector and the inner surface of the housing. The outer surface of the housing is provided with an identification ring for distinguishing the port specifications of the radio frequency test cable assembly.

[0007] The fixed bushing is a stepped hollow cylinder, and a stepped hole matching the external stepped shape is provided in the center; the outer surface is provided with a first external thread for connecting the housing and a second external thread for connecting the radio frequency connector.

[0008] The housing is a hollow cylinder made of metal, with a central hole provided therein. A limiting step is arranged inside the central hole, which divides the central hole into a first round hole and a second round hole. The diameter of the first round hole is larger than that of the second round hole, and the first round hole is provided with a first internal thread that matches the first external thread.

[0009] The RF connector includes a connecting sleeve, an inner conductor, a lining sleeve for fixing the inner conductor, a connector welding bushing, and a connector housing. One end of the connector housing is connected to the connecting sleeve through a snap ring, and the inner surface of the other end is provided with a second internal thread that matches the second external thread, and is connected to the fixing bushing through the second internal thread. The inner conductor and the lining sleeve are fixed inside the connector housing. The end of the inner conductor is located inside the connecting sleeve, and a slot for connecting a coaxial cable is provided at the bottom of the inner conductor. The connector welding bushing is fixed inside the connector housing adjacent to the lining sleeve, and there is a gap for installing the fixing bushing between the outer surface and the second internal thread. A welding through hole is provided inside for connecting the coaxial cable.

[0010] The coaxial cable includes, from the inside to the outside, a cable inner conductor, an insulating layer, a braided outer conductor, a cable sheath, an armor metal layer, and an armor outer braid layer. The coaxial cable passes through the central hole of the fixing bushing and is connected to the RF connector. The cable inner conductor is connected to the inner conductor through the slot, and the braided outer conductor is welded to the welding through hole of the connector welding bushing. The welding bushing is located between the first internal thread and the limiting step and is welded to the armor metal layer, and can slide freely between the first internal thread and the limiting step to perform deformation compensation on the coaxial cable, reduce the tension on the coaxial cable, and ensure the stability of signal transmission.

[0011] Preferably, the length of the housing is greater than or equal to 20 mm. Symmetrical milling edges are designed on the outside near the RF connector end, and a tapered bevel is provided on the outside of the other end, which is convenient for holding the RF test cable assembly for installation, improves the user experience, and avoids scratching. A flared opening is provided at the end of the second round hole, which is convenient for the coaxial cable to pass through the second round hole without scratching the armor outer braid layer and makes the assembly smoother.

[0012] Preferably, an annular groove for installing an identification ring is provided on the outer surface of the housing. The identification ring is made of a colored heat-shrinkable elastomer material, and each color corresponds to a port specification of the RF test component, which is convenient for timely and convenient identification of the RF test port specification and avoids damage to the equipment caused by misapplication.

[0013] Preferably, the RF connector can adopt an integrated structure, which is integrally connected to the coaxial cable and the fixing bushing. The RF connector is divided into male and female heads, which can be connected to each other. Among them, the inner conductor of the male head RF connector is a solid structure, and the connecting sleeve is an internal thread structure; the inner conductor of the female head RF connector is a hollow structure, which is connected to the inner conductor of the male head RF connector, and the connecting sleeve is an external thread structure.

[0014] A radio frequency test cable assembly with color markings provided by the present invention installs male and female radio frequency connectors at both ends of a coaxial cable to form a radio frequency test cable assembly, which is connected in cooperation with the interfaces of devices and is used to connect test devices and devices to be detected or for signal transfer in a system.

[0015] Beneficial effects: The present invention uses a metal housing to improve the structural strength and strengthen the protection of the connection part; an identification ring is provided to easily distinguish the port specifications of the radio frequency test component by color, saving time, improving work efficiency, and avoiding misconnection of ports; the fixed bushing is connected by threads to effectively prevent the radio frequency connector from disconnecting from the coaxial cable and ensure the stability of signal transmission; the welding bushing relieves the telescopic tension on the surface of the coaxial cable, performs deformation compensation, and improves the service life. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0017] Figure 1 It is a cross-sectional view of the overall assembled structure of the present invention;

[0018] Figure 2 It is a cross-sectional view of the assembled structure of the radio frequency connector of the present invention;

[0019] Figure 3 It is a cross-sectional view of the fixed bushing of the present invention;

[0020] Figure 4 It is the front view of the housing of the present invention;

[0021] Figure 5 It is a cross-sectional view of the housing of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the coaxial cable of the present invention;

[0023] Figure 7 It is a schematic diagram of the external shape of a complete radio frequency test cable assembly assembled using the structure of the present invention;

[0024] Among them, 1 - radio frequency connector, 2 - fixed bushing, 3 - welding bushing, 4 - housing, 5 - identification ring, 6 - coaxial cable;

[0025] 101 - connecting sleeve, 102 - inner conductor, 103 - slot, 104 - snap ring, 105 - second internal thread, 106 - inner liner, 107 - connector welding bushing, 108 - connector housing, 109 - welding through hole;

[0026] 201 - first external thread, 202 - second external thread, 203 - stepped hole;

[0027] 401 - Central hole, 402 - Limiting step, 403 - First round hole, 404 - Second round hole, 405 - First internal thread, 406 - Tapered inclined surface, 407 - Flared opening, 408 - Symmetric milling edge, 409 - Annular groove;

[0028] 601 - Cable inner conductor, 602 - Insulation layer, 603 - Braided outer conductor, 604 - Cable sheath, 605 - Armor metal layer, 606 - Armor outer braided layer. Detailed implementation manner

[0029] The present invention will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the described embodiments.

[0030] As Figure 1 shown, a radio frequency test cable assembly with color markings provided by the present invention includes a radio frequency connector 1, a fixed bushing 2, a welding bushing 3, a housing 4, and a coaxial cable 6, which are in a coaxial assembly relationship from left to right. The coaxial cable 6 is located at the most central position and passes through the housing 4, the welding bushing 3, the fixed bushing 2 and is connected to the radio frequency connector 1. An identification ring 5 is arranged outside the housing 4; the fixed bushing 2 is embedded inside the housing 4 and the radio frequency connector 1, and the two are respectively connected and fixed through a first external thread 201 and a second external thread 202 located outside the fixed bushing 2. As Figure 3 shown, a stepped hole 203 is arranged inside the fixed bushing 2.

[0031] As Figure 2 shown, the radio frequency connector 1 includes a connection sleeve 101, an inner conductor 102, an inner bushing 106, a connector welding bushing 107, and a connector housing 108. One end of the connector housing 108 is connected to the connection sleeve 101 through a snap ring 104, and a second internal thread 105 matching the second external thread 202 is arranged inside the other end. The inner conductor 102 is installed inside the connector housing 108 through the inner bushing 106. The end of the inner conductor 102 is located inside the connection sleeve 101, and a slot 103 for communicating with the coaxial cable 6 is arranged at the bottom. The connector welding bushing 107 is installed adjacent to the inner bushing 106, and there is a gap for installing the fixed bushing 2 between the outer side surface and the second internal thread 105. A welding through hole 109 is arranged inside.

[0032] As Figure 4 , Figure 5As shown, the housing 4 is a hollow tubular structure made of metal, with a length greater than or equal to 20 mm. It includes a central hole 401, and a limiting step 402 is provided in the central hole 401. The limiting step 402 divides the central hole 401 into a first round hole 403 and a second round hole 404. A first internal thread 405 that matches the first external thread 201 is provided in the first round hole 403; on the outer side of the port position of the housing 4 close to the RF connector 1, a symmetric milling edge 408 is designed, and on the outer side of the other port position, a conical inclined surface 406 is designed. A flared opening 407 is designed on the inner side of the conical inclined surface 406 to facilitate the coaxial cable 6 to pass through.

[0033] As Figure 6 As shown, the coaxial cable 6 includes, from the inside to the outside, a cable inner conductor 601, an insulating layer 602, a braided outer conductor 603, a cable sheath 604, an armor metal layer 605, and an armor outer braided layer 606. The welding bushing 3 is welded to the armor metal layer 605. At this time, the welding bushing 3 is located between the limiting step 402 of the outer housing 4 and the first internal thread 405, and the welding bushing 3 can slide freely between the two; the cable inner conductor 601 is connected to the inner conductor 102 through the slot 103, and the braided outer conductor 603 is welded to the welding through hole 109 of the connector welding bushing 107.

[0034] An annular groove 409 is provided on the housing 4 for installing the identification ring 5; the identification ring 5 is made of a heat-shrinkable elastomer material, and the color is a specific color corresponding to the port type of the RF connector 1. Each color corresponds to a port specification of the RF connector 1.

[0035] The RF connector 1 is a pre-assembled integral structure that can be quickly replaced, facilitating disassembly and maintenance. The RF connector is divided into male and female heads. The connecting sleeve 101 of the male RF connector 1 is provided with an internal thread, and the inner conductor 102 is a solid structure; the connecting sleeve 101 of the female RF connector 1 is provided with an external thread, and the inner conductor 102 is a hollow structure for mating and connecting with the inner conductor 102 of the male RF connector 1.

[0036] As Figure 7 As shown, both ends of the coaxial cable 6 can be fixed with the same specification RF connectors 1 of male or female heads to meet the usage requirements.

[0037] A specific application example of the present invention is as follows: First, cut a section of armored coaxial cable 6 in advance. At one end, separate the inner conductor 601, insulation layer 602, braided outer conductor 603, cable sheath 604, armored metal layer 605, and armored outer braid layer 606 of the cable layer by layer according to the length dimension required for assembly. The welding bushing 3 passes through the coaxial cable 6 and is sleeved on the armored metal layer 605. The fixing bushing 2 is sleeved on the coaxial cable 6 and is connected to the second internal thread 105 of the connector housing 108 through the second external thread 202. The cable inner conductor 601 is inserted into the slot 103 and is in communication with the inner conductor 102. The cable outer conductor 603 is fixed to the connector welding bushing 107 by welding through the welding through hole 109. At this time, the end faces of the armored metal layer 605 and the armored outer braid layer 606 are in contact with the step surface of the stepped hole 203. Then, the welding bushing 3 is welded and fixed to the armored metal layer 605 at the required position. The housing 4 passes through the outermost armored outer braid layer 606 of the coaxial cable 6 and is threadedly connected to the fixing bushing 2 until the coaxial cable 6 and the RF connector 1 are completely locked. At this time, the RF connector 1 and the coaxial cable 6 will form a stable integrated structure. Subsequently, the identification ring 5 corresponding to the port specification color of the RF connector 1 is sleeved on the annular groove 409 of the outer housing 4 to complete the assembly of one end of the test cable assembly.

[0038] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A radio frequency test cable assembly with color markings, characterized in that: it includes a radio frequency connector (1), a fixed bushing (2), a welding bushing (3), a housing (4) and a coaxial cable (6); A metal armor is provided outside the coaxial cable (6), the housing (4) is sleeved at the end of the coaxial cable (6), a welding bushing (3) is arranged in the fitting clearance between the housing (4) and the coaxial cable (6), and the welding bushing (3) is welded to the metal armor outside the coaxial cable (6); The end of the coaxial cable (6) is electrically connected to the radio frequency connector (1); the fixed bushing (2) is arranged inside the housing (4), between the radio frequency connector (1) and the welding bushing (3), one outer side of one end of the fixed bushing (2) is connected to the inner surface of the housing (4), and the other outer side is connected to the lower part of the radio frequency connector (1); An identification ring (5) for distinguishing the port specifications of the radio frequency connector (1) is arranged on the outer surface of the housing (4); The fixed bushing (2) is a stepped hollow cylinder, with a first external thread (201) connected to the housing (4) and a second external thread (202) connected to the radio frequency connector (1) arranged on the outer surface, and a stepped hole (203) is arranged inside the fixed bushing (2), and the shape of the stepped hole (203) matches the outer stepped shape; The radio frequency connector (1) includes a connecting screw sleeve (101), an inner conductor (102), a lining bushing (106), a connector welding bushing (107) and a connector housing (108), one end of the connector housing (108) is connected to the connecting screw sleeve (101) through a snap ring (104), and a second internal thread (105) matching the second external thread (202) of the fixed bushing (2) is arranged on the inner hole surface of the other end; The inner conductor (102) is installed inside the connector housing (108), the end protrudes from the end face of the connector housing (108) and is located inside the connecting screw sleeve (101), a lining bushing (106) is arranged on the outer circle of the inner conductor (102), and a slot (103) is arranged at the bottom; the connector welding bushing (107) is fixed inside the connector housing (108) close to the lining bushing (106), the connector welding bushing (107) is coaxial with the threaded hole of the second internal thread (105), and there is a gap for installing the fixed bushing (2) between the outer surface and the second internal thread (105), and a welding through hole (109) for connecting the coaxial cable (6) is arranged inside; The coaxial cable (6) includes a cable inner conductor (601), an insulating layer (602), a braided outer conductor (603), a cable sheath (604), an armor metal layer (605) and an armor outer braided layer (606) from the inside to the outside; the cable inner conductor (601) at the end of the coaxial cable (6) is installed in the slot (103) and is connected to the inner conductor (102); the braided outer conductor (603) is welded to the welding through hole (109) of the connector welding bushing (107), and the welding bushing (3) is located between the first internal thread (405) and the limit step (402) and is welded to the armor metal layer (605).

2. A radio frequency test cable assembly with color markings according to claim 1, characterized in that: The housing (4) is a hollow circular tube made of metal. A limiting step (402) is provided inside its central hole (401), dividing the central hole (401) into two circular holes with different diameters, namely a first circular hole (403) and a second circular hole (404). The diameter of the first circular hole (403) is larger than that of the second circular hole (404). A first internal thread (405) that mates with the first external thread (201) is provided in the first circular hole (403). The welding bushing (3) can slide freely between the first internal thread (405) and the limiting step (402).

3. The colored - marked radio - frequency test cable assembly according to claim 1, characterized in that: A tapered bevel (406) is provided at the outer - surface end of the second circular hole (404) of the housing (4), and a flared trumpet - shaped opening (407) convenient for installing the coaxial cable (6) is provided at the inner - surface end. Symmetric milling edges (408) are provided at the end of the first circular hole (403).

4. The colored - marked radio - frequency test cable assembly according to claim 1, characterized in that: The radio - frequency connector (1) adopts a replaceable integral structure and is integrally connected to the fixed bushing (2).

5. The colored - marked radio - frequency test cable assembly according to claim 1, characterized in that: The radio - frequency connector (1) is divided into male and female connectors. The connecting sleeve (101) of the male - head radio - frequency connector (1) is provided with an internal thread, and the inner conductor (102) is of a solid structure; the connecting sleeve (101) of the female - head radio - frequency connector (1) is provided with an external thread, and the inner conductor (102) is of a hollow structure and is used for mating and connecting with the inner conductor (102) of the male - head radio - frequency connector (1).

6. The colored - marked radio - frequency test cable assembly according to claim 1, characterized in that: The length of the housing (4) is greater than or equal to 20 mm.

7. The colored - marked radio - frequency test cable assembly according to claim 1, characterized in that: An annular groove (409) for installing an identification ring is provided on the housing (4). The identification ring (5) is made of a colored heat - shrinkable elastomer material, and each color corresponds to a port specification of a radio - frequency test cable assembly.

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