Multi-direction self-adaptive cable radio frequency coaxial connector and cable assembly

Abstract

The utility model discloses a multidirectional self-adaptive cable radio frequency coaxial connector and a cable assembly, comprising a bent radio frequency joint, a radio frequency cable and a multidirectional self-adaptive cable radio frequency coaxial connector which are connected in sequence, the coaxial connector comprises an insulating sleeve A, a central contact element and an outer conductor, one end of the wiring sleeve is arranged in the outer conductor, and the other end of the wiring sleeve is arranged on the outer side of the outer conductor and is connected with a radio frequency cable. According to the utility model, the problem that free insertion can be realized without twisting a radio frequency cable when a bent joint in a cable assembly product is inserted in different directions is solved, and the problem that radio frequency signal transmission fails due to damage or breakage caused by forcibly twisting the radio frequency cable when insertion in different directions needs to be met is avoided; therefore, the service life of the assembly is prolonged, and the transmission reliability of the radio frequency signal is ensured at the same time.

Description

Technical Field

[0001] This patent relates to the field of RF coaxial connector technology, specifically a multi-directional adaptive cable RF coaxial connector and cable assembly. Background Art

[0002] RF coaxial connectors often appear in the form of RF cable assemblies, that is, they are composed of connectors at both ends and RF cables. Usually, RF cable assemblies often have a fixed end at one end and a curved free end at the other end. The free end needs to be able to freely plug in with the docking end in different directions, while the fixed end is usually installed on the panel. Once installed, it cannot be plugged in at different directions. Therefore, the connection can only be achieved by rotating the free end. In the field of connectors, there are more and more types of rigid cables and flexible cables. In order to adapt to the matching of the above cables, the specifications of connectors are also increasing, and at the same time, disadvantages also frequently appear. After the conventional connector is connected to the rigid or flexible cable, the free end needs to forcibly twist the rotation direction of the cable to achieve multi-directional plug-in. If the cable is slightly damaged, it will cause the overall standing wave and loss of the assembly to increase; in severe cases, the inner core and shielding layer of the cable will be twisted and broken, which will greatly shorten the mission of the cable assembly and cause the RF transmission of the assembly to fail directly.

[0003] A Chinese patent with announcement number CN212849187U discloses a radio frequency coaxial connector and a radio frequency coaxial cable assembly. A movable ring is integrally formed or fixedly connected to the inner side of the second end of the connecting screw sleeve in the connector, and a first limiting ring is provided on the outer edge of the outer conductor, and the diameter of the first limiting ring is larger than the inner diameter of the movable ring and smaller than the outer diameter of the movable ring; the connector also includes a tail sleeve, and a second limiting ring is provided on the outer edge of the tail sleeve, and the diameter of the second limiting ring is larger than the inner diameter of the movable ring, and the movable ring can be movably arranged between the first limiting ring and the second limiting ring. The connecting screw sleeve of the connector of the device moves along the axial direction of the outer conductor. When connected to the instrument, the connecting screw sleeve is moved toward the second end of the outer conductor, and there is a situation where the cable is slightly damaged, resulting in an increase in the overall standing wave and loss of the assembly. Therefore, a cable radio frequency connector is needed that can effectively solve the problems of damage, breakage, falling off of the adapter cable, and failure of radio frequency signal transmission due to repeated twisting of the cable in multiple directions after the fixed-end radio frequency connector is welded. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a multi-directional adaptive cable radio frequency coaxial connector and a cable assembly.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a multi-directional adaptive cable radio frequency coaxial connector, comprising an insulating sleeve A, a center contact and an outer conductor. The insulating sleeve A is arranged inside the outer conductor for installing the center contact, and one end of the insulating sleeve B and the wiring sleeve is arranged inside the outer conductor and the other end is arranged outside the outer conductor to be connected with the radio frequency cable.

[0007] Preferably, a sealing ring groove and a countersunk mounting hole are provided on the outer conductor flange.

[0008] Preferably, a window and a threaded structure are provided on the wiring sleeve, a threading hole and a barb structure are provided at one end of the wiring sleeve, and the window is connected to the threaded structure through a connecting screw sleeve.

[0009] Preferably, one end of the outer conductor is a standard TNC-type thread structure, and the inner hole wall is arranged in a stepped structure.

[0010] Preferably, the radio frequency cable comprises, from inside to outside, a cable core, an insulation layer, a shielding layer and a cable sheath.

[0011] Preferably, the central contact piece is welded to the inner core of the cable via a welding cup structure, and the wiring sleeve is clearance-fitted to the outer conductor.

[0012] Preferably, one end of the center contact is a socket structure, the other end is a welding cup structure, the outer surface is arranged as a stepped shaft structure, and the insulating sleeve A and the insulating sleeve B are axially connected via a first boss.

[0013] A multi-directional adaptive cable RF cable assembly includes the above-mentioned coaxial connector, one end of the cable assembly is a multi-directional adaptive RF coaxial connector, and the other end is connected to the RF connector through an RF cable, and the RF cable is a semi-flexible semi-steel cable or a rigid cable.

[0014] The beneficial effects of the utility model are: solving the problem that the bent RF connector in cable assembly products can be freely plugged in in different directions without twisting the RF cable, avoiding the problem that the RF cable is damaged or broken due to the need to meet the requirements of plugging in different directions, resulting in failure of RF signal transmission, etc., ensuring the intact connection between the RF cable and the connector, extending the service life of the component while ensuring the reliability of RF signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall structure composition diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the outer conductor structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the wiring sleeve structure of the utility model;

[0018] Figure 4 It is a partial schematic diagram of the bell mouth of the wiring sleeve of the utility model;

[0019] Figure 5 It is a partial schematic diagram of the riveting structure of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the central contact of the utility model;

[0021] Figure 7 This is a schematic diagram of welding the radio frequency cable and the wiring sleeve assembly of the utility model;

[0022] Figure 8 It is the overall installation diagram of the utility model;

[0023] Fig. 9 It is a schematic diagram of the utility model of the adaptive bent radio frequency connector rotating 30 degrees for insertion.

[0024] In the figure: 1-insulating sleeve A, 2-center contact, 21-jack structure, 22-first boss, 23-stepped shaft structure, 24-welding cup structure, 3-outer conductor, 31-sealing ring mounting groove, 32-countersunk mounting hole, 33-stepped threading hole, 34-connecting thread, 4-sealing ring, 5-insulating sleeve B, 6-connecting screw sleeve, 7-wiring sleeve, 71-trumpet-shaped threading hole, 72-heat shrinkable mold sleeve anti-stripping barb structure, 73-connecting thread structure, 74-opening window, 75-riveting chamfer, 8-heat shrinkable mold sleeve, 9-RF cable, 91-cable inner core, 92-insulating layer, 93-shielding layer, 94-cable outer skin, 10-bent RF connector. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific examples:

[0026] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0027] See also Figures 1 to 9 shown.

[0028] A multi-directional adaptive cable radio frequency coaxial connector, comprising an insulating sleeve A1, a center contact 2 and an outer conductor 3, wherein the insulating sleeve A1 is arranged inside the outer conductor 3 for installing the center contact 2, the insulating sleeve B5 and the wiring sleeve 7 are arranged at one end inside the outer conductor 3, and the other end is arranged outside the outer conductor 3 and connected to the radio frequency cable 9, the wiring sleeve 7 is freely rotated along the axial direction, and the welding of the radio frequency cable 9 on the trumpet-shaped threading hole 71 at the tail end thereof is not affected, the center contact 2, the insulating sleeve B5 and the wiring sleeve 7 are coaxially arranged by interference fit in pairs, the shielding layer of the radio frequency cable 9 is welded to the threading hole of the wiring sleeve 7, the wiring sleeve 7 has a window structure and is clearance-matched with the outer conductor 3 and is fixed by riveting the tail of the outer conductor 3, and is distributed as an integrated structure after the radio frequency cable 9 is installed, so that the radio frequency cable 9 can be synchronously rotated axially with the wiring sleeve 9 on the outer conductor 3;

[0029] A sealing ring groove 31 and a countersunk mounting hole 32 are provided on the flange of the outer conductor 3. The interior of the outer conductor 3 is a four-section structure distribution of a dielectric support section 1-1, an air dielectric section 2-2, a dielectric support section 3-3 and an air dielectric section 4-4. The impedance at the air dielectric is 50Ω±1Ω, ensuring that the impedance of each insulating support section and air dielectric section is closely matched with the impedance of the matching RF cable 9 of 50Ω.

[0030] The wiring sleeve 7 is provided with an opening window 74 and a threaded structure 73. One end of the wiring sleeve 7 is provided with a threading hole 71 and a barb structure 72. The opening window 74 is connected to the threaded structure 73 through the connecting screw sleeve 6. The trumpet-shaped threading hole 71 facilitates the solder to flow completely into and contact the cable shielding layer 93. The opening window 74 is connected and closed with the threaded structure 73 through the connecting screw sleeve 6.

[0031] One end of the outer conductor 3 is a standard TNC type thread structure 34, the inner hole wall is set as a stepped structure 33, the tail riveted part is a 20° conical hole structure, and the closing side length is 0.7mm, which is convenient for the installation and fixation of the insulating sleeve A1 on the one hand, and provides an axial limiting effect for the wiring sleeve 7 on the other hand.

[0032] The cable includes a cable core 91 , an insulating layer 92 , a shielding layer 93 and a cable sheath 94 from the inside to the outside.

[0033] The center contact 2 is welded to the cable core 91 through a welding cup structure 24, the wiring sleeve 7 is clearance-fitted with the outer conductor 3, the RF cable shielding layer 93 is welded to the trumpet-shaped threading hole 71 at the tail end of the window 74 on the wiring sleeve 7, and is fixed by riveting and shrinking the 20° conical hole at the tail end of the outer conductor 3, and can be freely rotated 360° in the radial direction. This structure has the characteristics of reliable structure and convenient connection, and solves the problem of the bent RF connector 10 in cable component products in different directions to realize the free plugging of the RF cable 9, avoids the problem of forced twisting of the RF cable 9 due to the need to meet the plugging in different directions, causing damage or breakage of the cable core 91 and the shielding layer 93, resulting in failure of RF signal transmission, and ensures that the RF cable 9 is well connected to the connectors 1~7, prolongs the service life of the component and ensures the reliability of RF signal transmission.

[0034] One end of the center contact 2 is a socket structure 21, and the other end is a welding cup structure 24, which is convenient for connection with the RF cable 9 through the welding window 72. Except for the plug-in end, the outer surface is arranged as a columnar stepped shaft structure 23 with a decreasing shaft diameter in sequence. The insulating sleeve A1 and the insulating sleeve B5 are axially limited and separated by the first boss 22 on the center contact 1.

[0035] A multi-directional adaptive cable RF coaxial connector and a cable assembly, including a cable assembly, wherein one end of the cable assembly is a multi-directional adaptive RF coaxial connector, and the other end is connected to a RF connector 10 via a RF cable 9, wherein the RF cable 9 is a semi-flexible semi-steel cable or a rigid cable, and when the bent RF connector 10 is plugged in multiple directions, the RF cable 9 rotates synchronously with the wiring sleeve 7, and the wiring sleeve 7 is used for split connection with the outer conductor 3, so as to achieve the effect of free and arbitrary rotation, and is interconnected with the RF cable shielding layer 93 by welding.

[0036] The assembly process of a multi-directional adaptive RF coaxial connector 1~7 and an adapter cable assembly 9 shown in this embodiment is as follows: first, the RF cable 9 is stripped according to the specified stripping length, and then the heat shrinkable mold sleeve 8 and the connecting screw sleeve 6 are successively inserted into the cable assembly 9, and then the cable core 91 and the shielding layer 93 are welded to the connector center contact 2 and the wiring sleeve 7 respectively using welding equipment. After the welding inspection is qualified, the connecting screw sleeve 6 and the connecting thread 73 on the wiring sleeve 7 are tightened, and finally the heat shrinkable mold sleeve 8 is shrunk using a heating device to complete the assembly of the components.

[0037] When in use, the multi-directional adaptive RF coaxial connector is fixed on the mounting chassis or integrated housing panel by installing screws. The bent RF connector 10 in the component serves as a free end. The handheld bent RF connector 10 can be plugged with the docking end in any direction in the chassis or integrated system. Fig. 9The rotational plug-in angle of the bent RF connector shown is 30°. At this time, the RF cable 9 rotates synchronously with the wiring sleeve including the center contact 2 and the insulating sleeve B in the outer conductor 3, and the RF cable 9 will not be twisted due to plugging in different directions. The RF cable 9 and the welding end can still maintain a complete connection state.

Claims

1. A multi-directional adaptive cable radio frequency coaxial connector, characterized in that: The invention comprises an insulating sleeve A (1), a center contact piece (2) and an outer conductor (3). The insulating sleeve A (1) is arranged inside the outer conductor (3) for mounting the center contact piece (2). The insulating sleeve B (5) and a wiring sleeve (7) are arranged inside the outer conductor (3). The other end is arranged outside the outer conductor (3) and connected to a radio frequency cable (9).

2. A multi-directional adaptive cable radio frequency coaxial connector as claimed in claim 1, characterized in that: A sealing ring groove (31) and a countersunk mounting hole (32) are provided on the flange of the outer conductor (3).

3. A multi-directional adaptive cable radio frequency coaxial connector as claimed in claim 1, characterized in that: The wiring sleeve (7) is provided with an opening window (74) and a threaded structure (73); one end of the wiring sleeve (7) is provided with a threading hole (71) and a barb structure (72); the opening window (74) is connected to the threaded structure (73) via a connecting screw sleeve (6).

4. A multi-directional adaptive cable radio frequency coaxial connector as claimed in claim 1, characterized in that: One end of the outer conductor (3) is a standard TNC-type thread structure (34), and the inner hole wall is arranged as a stepped structure (33).

5. The multi-directional adaptive cable radio frequency coaxial connector according to claim 1, characterized in that: The radio frequency cable (9) comprises, from inside to outside, a cable inner core (91), an insulating layer (92), a shielding layer (93) and a cable outer sheath (94).

6. The multi-directional adaptive cable radio frequency coaxial connector according to claim 1, characterized in that: The central contact piece (2) and the cable inner core (91) are welded via a welding cup structure (24), and the wiring sleeve (7) and the outer conductor (3) are clearance-fitted.

7. The multi-directional adaptive cable radio frequency coaxial connector according to claim 1, characterized in that: One end of the central contact piece (2) is a socket structure (21), the other end is a welding cup structure (24), the outer surface is arranged as a stepped shaft structure (23), and the insulating sleeve A (1) and the insulating sleeve B (5) are axially connected via a first boss (22).

8. A multi-directional adaptive cable radio frequency cable assembly, characterized in that: It comprises a coaxial connector as described in any one of claims 1 to 7, wherein one end of the cable assembly is a multi-directional adaptive radio frequency coaxial connector, and the other end is connected to a radio frequency connector (10) via a radio frequency cable (9), and the radio frequency cable (9) is a semi-flexible semi-steel cable or a rigid cable.

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