Phase-adjustable cable connector

Abstract

The present invention discloses a phase-adjustable cable connector. The connector is used for coaxial cables and includes a welding sleeve, an outer conductor, a center conductor, and a screw sleeve. The welding sleeve is sleeved on the end of the coaxial cable and is connected to the outer conductor of the coaxial cable by welding. The outer conductor is installed on the welding sleeve through a tail sleeve. The center conductor is arranged at the center of the outer conductor through an insulator and is connected to the axial conductor of the coaxial cable. The screw sleeve is installed on the outer conductor, is coaxial with the center conductor, and forms a connector with the center conductor. A gasket cavity is provided between the outer conductor and the welding sleeve. A number of gaskets stacked together for phase adaptation are provided in the gasket cavity. The present invention only needs to adjust the number or thickness of the gaskets in the gasket cavity to achieve the purpose of phase matching, and under the structure of the present invention, it is very convenient to adjust the gaskets in the gasket cavity, which greatly improves the production efficiency of radio frequency cable assemblies and reduces waste.

Description

Technical Field

[0001] The present invention relates to radio frequency coaxial cables. Background Art

[0002] The rapid development of radar technology and the continuous expansion of its application areas require a certain level of phase matching accuracy between each RF component in phase-matching systems such as antenna arrays and phased array radars. To ensure phase consistency between components, phase matching requirements are placed on the processing of RF cable assemblies. A key factor determining the phase consistency of RF cable assemblies is electrical length. Phase matching between two RF cable assemblies means that the electrical lengths of the two RF cable assemblies are consistent. In theory, the various connector parts are processed on precision CNC machine tools, and the length error of parts produced in the same batch is very small. Therefore, as long as the cable lengths of the two assemblies maintain the same mechanical length and the dielectric constant of the insulators is consistent, then, as long as the same temperature, humidity, and test conditions are maintained, the cable assemblies will maintain phase consistency.

[0003] Under existing technology, the phase matching production process of RF cable assemblies places extremely high demands on cable cutting, welding and other processes, and requires repeated trimming to achieve the purpose of phase matching. Once the trimming length is too short, the cable can only be replaced for re-installation and matching, resulting in great waste. Summary of the Invention

[0004] Problem to be solved by the present invention: Under the existing technology, the phase matching production process of RF cable assemblies has extremely high requirements for cable cutting, welding and other processes, and requires repeated trimming to achieve the purpose of phase matching. Once the trimming length is too short, the cable can only be replaced for installation and matching, resulting in great waste.

[0005] To solve the above problems, the present invention adopts the following solutions:

[0006] According to the present invention, a phase-adjustable cable connector is used for a coaxial cable and includes a welding sleeve, an outer conductor, a center conductor, and a threaded sleeve. The welding sleeve is sleeved on the end of the coaxial cable and connected to the outer conductor of the coaxial cable by welding. The outer conductor is mounted on the welding sleeve via a tail sleeve. The center conductor is arranged at the center of the outer conductor via an insulator and is connected to the axial conductor of the coaxial cable. The threaded sleeve is mounted on the outer conductor. The threaded sleeve is coaxial with the center conductor and forms a connector with the center conductor. A gasket cavity is provided between the outer conductor and the welding sleeve. A plurality of stacked gaskets for phase adjustment are provided in the gasket cavity.

[0007] Furthermore, according to the phase-adjustable cable connector of the present invention, an outer convex ring is provided at the front end of the welding sleeve; the outer convex ring has a front end surface at the front end of the coaxial cable and a locking step is formed at the rear; the tail sleeve is sleeved on the welding sleeve and is locked at the rear of the outer convex ring through the locking step formed at the rear of the outer convex ring.

[0008] Furthermore, according to the phase-adjustable cable connector of the present invention, an external threaded portion is provided on the tail sleeve; the outer conductor is a hollow conductor, the front section has a central conductor mounting cavity, the rear section has an internal threaded portion, an intermediate cavity is provided between the central conductor mounting cavity and the internal threaded portion, the intermediate cavity and the central conductor mounting cavity are separated by an inner convex ring, and the intermediate cavity has an annular gasket surface on the inner convex ring; the outer conductor is fixed to the tail sleeve by threaded engagement with the external threaded portion on the tail sleeve through the inner threaded portion.

[0009] Furthermore, according to the phase-adjustable cable connector of the present invention, the outer convex ring is located in the middle cavity, so that a gasket cavity is formed between the front end surface of the outer convex ring and the annular gasket surface.

[0010] Furthermore, according to the phase-adjustable cable connector of the present invention, the insulator is arranged in the center conductor installation cavity; the center conductor is arranged at the center of the insulator, so that the center conductor and the outer conductor are coaxial and separated by the insulator.

[0011] Furthermore, according to the phase-adjustable cable connector of the present invention, an axial hole is provided at the center of the rear end of the center conductor; the center conductor is connected to the axial conductor of the coaxial cable through an axial head inserted into the axial hole; the axial head is the part of the axial conductor exposed at the end and protruding from the front end surface.

[0012] Furthermore, according to the phase-adjustable cable connector of the present invention, an annular groove is provided on the outer conductor; and the screw sleeve is connected to the outer conductor via a C-shaped clamping ring clamped in the annular groove.

[0013] Furthermore, according to the phase-adjustable cable connector of the present invention, the screw sleeve is provided with a connecting cavity with a front opening; the central conductor extends forward of the connecting cavity and forms a connecting pin in the connecting cavity; the connecting pin is coaxial with the screw sleeve.

[0014] The technical effects of the present invention are as follows: During the phase matching production process of the RF cable assembly, the purpose of phase matching can be achieved by only adjusting the number or thickness of the gaskets in the gasket cavity. Moreover, under the structure of the present invention, it is very convenient to adjust the gaskets in the gasket cavity, which greatly improves the production efficiency of the RF cable assembly and reduces waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic half-section diagram along the axis of the overall structure of an embodiment of the present invention.

[0016] Figure 2It is a schematic half-section diagram along the axis of the welding sleeve portion of an embodiment of the present invention.

[0017] Figure 3 It is a schematic half-section diagram along the axis after the welding sleeve tail sleeve and the threaded sleeve are hidden in the embodiment of the present invention.

[0018] Among them, 101 is the axial conductor, 102 is the outer conductor 102, 103 is the insulating layer, 104 is the insulating sheath; 111 is the axial head, 112 is the welding sleeve, 113 is the outer convex ring, 114 is the welding part, 115 is the front end face, 121 is the outer conductor, 122 is the center conductor mounting cavity, 123 is the internal threaded part, 124 is the internal convex ring, 125 is the middle cavity, 126 is the annular gasket surface, 129 is the annular groove, 131 is the tail sleeve, 132 is the external threaded part, 133 is the gasket, 134 is the insulator, 141 is the center conductor, 142 is the axial hole, 143 is the connector pin head, 151 is the screw sleeve, 152 is the connector cavity, and 159 is the C-shaped retaining ring. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 、 Figure 2 、 Figure 3 Figure 1 shows a phase-adjustable cable connector for a coaxial cable, comprising a welding sleeve 112, an outer conductor 121, a tail sleeve 131, an insulator 134, a center conductor 141, and a threaded sleeve 151. The coaxial cable has a four-layer structure, including a core conductor 101, an outer conductor 102, an insulating layer 103, and an insulating jacket 104. The core conductor 101 is located in the innermost layer and is covered by the insulating layer 103. The outer conductor 102 is located outside the insulating layer 103, and the insulating jacket 104 is located outside the outer conductor 102. The core conductor 101 and the outer conductor 102 are isolated by the insulating layer 103.

[0021] The welding sleeve 112 is placed on the end of the coaxial cable and connected to the outer conductor 102 of the coaxial cable by welding. Specifically, the welding sleeve 112 is connected to the outer conductor 102 by soldering at the welding portion 114. An outer convex ring 113 is provided at the front end of the welding sleeve 112. The outer convex ring 113 has a front end surface 115 at the front end of the coaxial cable and a locking step formed at the rear. The tail sleeve 131 is placed on the welding sleeve 112 and is locked behind the outer convex ring 113 by the locking step formed at the rear end of the outer convex ring 113. The tail sleeve 131 is provided with an external threaded portion 132. The external threaded portion 132 is provided with external threads. The front end of the axial conductor 101 is provided with an axial head 111. The axial head 111 is the portion of the axial conductor 101 of the coaxial cable that is exposed at the end and protrudes from the front end surface 115.

[0022] The outer conductor 121 is a hollow conductor with a central conductor mounting cavity 122 at its front end and an internally threaded portion 123 at its rear end. An intermediate cavity 125 is located between the central conductor mounting cavity 122 and the internally threaded portion 123. The intermediate cavity 125 is separated from the central conductor mounting cavity 122 by an internally protruding ring 124. The intermediate cavity 125 has an annular gasket surface 126 on the internally protruding ring 124. The internally threaded portion 123 is internally threaded. The outer conductor 121 is mounted on the welding sleeve 112 via a tail sleeve 131. Specifically, the outer conductor 121 is secured to the tail sleeve 131 by threaded engagement between the internally threaded portion 123 and the externally threaded portion 132 on the tail sleeve 131. The outer ring 113 is positioned within the intermediate cavity 125, so that a gasket cavity is formed between the front end surface 115 of the outer ring 113 and the annular gasket surface 126, forming a gasket cavity between the outer conductor 121 and the welding sleeve 112. A plurality of gaskets 133 stacked on top of each other for phase adaptation are provided in the gasket cavity.

[0023] The center conductor 141 is disposed at the center of the outer conductor 121 through the insulator 134. Specifically, the insulator 134 is disposed within the center conductor mounting cavity 122 of the outer conductor 121. The center conductor 141 is disposed at the center of the insulator 134 so that the center conductor 141 and the outer conductor 121 are coaxial and insulated and separated by the insulator 134. The center conductor 141 is connected to the axial conductor 101 of the coaxial cable. Specifically, an axial hole 142 is provided at the rear end center of the center conductor 141. The center conductor 141 is connected to the axial conductor 101 of the coaxial cable via an axial head 111 inserted into the axial hole 142. The gasket 133 is a circular ring with a center hole. When the axial conductor 101 is connected to the center conductor 141, the axial head 111 passes through the center hole of the gasket 133 and is naturally insulated and isolated by the gap between the axial head 111 and the edge of the center hole. The axial head 111 also passes through the center hole of the inner convex ring 124 and is naturally insulated and isolated by the gap between the axial head 111 and the edge of the center hole.

[0024] The screw sleeve 151 is mounted on the outer conductor 121. Specifically, an annular groove 129 is formed in the outer conductor 121; the screw sleeve 151 is connected to the outer conductor 121 via a C-shaped retaining ring 159 that is retained within the annular groove 129. The screw sleeve 151 has a connector cavity 152 with an open front end. The center conductor 141 extends forward of the connector cavity 152 and has a connector pin 143 formed therein. The connector pin 143 is coaxial with the screw sleeve 151, thereby making the screw sleeve 151 coaxial with the center conductor 141 and forming a connector plug with the center conductor 141.

[0025] The phase adjustment principle of this embodiment is as follows: Outer conductor 121 and the coaxial cable are connected by a threaded connection between outer conductor 121 and tail sleeve 131. This allows for easy disassembly of outer conductor 121. Once separated, spacers 133 can be placed in intermediate cavity 125 and reassembled with the coaxial cable. If the cable phase requires a change in cable length, simply adjust the number or thickness of spacers 133 in the spacer cavity.

Claims

1. A phase-adjustable cable connector for a coaxial cable, characterized in that: The invention comprises a welding sleeve (112), an outer conductor (121), a center conductor (141) and a screw sleeve (151); the welding sleeve (112) is sleeved on the end of the coaxial cable and connected to the outer conductor (102) of the coaxial cable by welding; the outer conductor (121) is installed on the welding sleeve (112) through a tail sleeve (131); the center conductor (141) is arranged at the center of the outer conductor (121) through an insulator (134) and is connected to the axial conductor (101) of the coaxial cable; the screw sleeve (151) is installed on the outer conductor (121); the screw sleeve (151) is coaxial with the center conductor (141) and is connected to the center conductor (141). The invention comprises a connector; a gasket cavity is provided between the outer conductor (121) and the welding sleeve (112); a plurality of gaskets (133) stacked together for phase adaptation are provided in the gasket cavity; an outer convex ring (113) is provided at the front end of the welding sleeve (112); the outer convex ring (113) has a front end surface (115) at the front end of the coaxial cable, and a locking step is formed at the rear; the tail sleeve (131) is sleeved on the welding sleeve (112), and is locked at the rear of the outer convex ring (113) through the locking step formed at the rear of the outer convex ring (113); the tail sleeve (131) is provided with an external threaded portion (132); the outer conductor (121) is a hollow conductor, and the front end has a central conductor installation cavity (122), the rear section has an internal threaded portion (123), an intermediate cavity (125) is provided between the center conductor mounting cavity (122) and the internal threaded portion (123), the intermediate cavity (125) and the center conductor mounting cavity (122) are separated by an inner convex ring (124), and the intermediate cavity (125) has an annular gasket surface (126) on the inner convex ring (124); the outer conductor (121) is fixed to the tail sleeve (131) in a threaded engagement manner through the inner threaded portion (123) and the outer threaded portion (132) on the tail sleeve (131); the outer convex ring (113) is located in the intermediate cavity (125), so that the front end surface (116) of the outer convex ring (113) is fixed to the tail sleeve (131) in a threaded engagement manner; ... 5) and the annular gasket surface (126) form a gasket cavity; the insulator (134) is arranged in the center conductor installation cavity (122); the center conductor (141) is arranged at the center of the insulator (134), so that the center conductor (141) and the outer conductor (121) are coaxial and insulated and separated by the insulator (134); an axial hole (142) is provided at the center of the rear end of the center conductor (141); the center conductor (141) is connected to the axial conductor (101) of the coaxial cable through an axial head (111) inserted into the axial hole (142); the axial head (111) is the part of the axial conductor (101) that is exposed at the end and protrudes from the front end surface (115).

2. The phase-adjustable cable connector according to claim 1, wherein: An annular groove (129) is provided on the outer conductor (121); the screw sleeve (151) is connected to the outer conductor (121) via a C-shaped clamping ring (159) clamped in the annular groove (129).

3. The phase-adjustable cable connector according to claim 1, wherein: The screw sleeve (151) is provided with a connecting cavity (152) with a front end opening; the central conductor (141) extends forward from the connecting cavity (152) and forms a connecting pin (143) in the connecting cavity (152); the connecting pin (143) and the screw sleeve (151) are coaxial.

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