Fast-assembly SMA connector

Abstract

The utility model relates to a fast-assembly type SMA connector in the connector field, which comprises a shell and a lead, a through hole is arranged in the shell, an insulator is nested in the through hole, an internal thread part is formed on the inner wall of the through hole, a positioning convex ring is formed on the surface of the insulator, an elastic sheet clamp spring is concentrically connected onto the positioning convex ring, a bending buckle is formed on the elastic sheet clamp spring, and the lead is connected with the elastic sheet clamp spring. The bending buckle is provided with a limiting groove through bending, the inner wall of the through hole is provided with a clamping groove, a pressing piece is connected in the clamping groove in a clamping mode, a pressing groove making contact with the elastic piece clamping spring is formed in the pressing piece, and the pressing piece is provided with a sealing gasket. According to the connector provided by the utility model, the connector is convenient to mount and dismount, so that when the internal thread part of the connector rotates to reach the limit of the thread, the bent buckle on the elastic sheet clamp spring is in buckled connection with an external connecting piece, a fixing force is provided for the connector in a using process, and the mounting stability of the connector is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of connectors, in particular to a quick-install SMA connector. Background Art

[0002] Connectors, as an important component of electronic devices and systems, are mainly used to connect and disconnect circuits or signals. Connectors play a vital role in the fields of communications, radio, radar, microwave equipment, etc. SMA connectors, as a common RF connector, are named after the English word "Sub-Miniature-A". SMA connectors are widely used in the field of wireless communications for their small size, reliability, and wide frequency range.

[0003] SMA connectors are mainly suitable for 50Ω RF systems. Their structures are usually divided into male and female types, and the styles include standard polarity, reverse polarity (RPSMA / RP-SMA) or reverse thread, etc. SMA connectors are a transmission system with inner and outer conductors centered on the same axis and an insulating medium between the inner and outer conductors. They are used to transmit various radio frequency electromagnetic field signals, connect the various subsystems of the communication system, or conduct signals between various devices. The termination methods of SMA connectors include threaded, clip-on / welded, press-in, crimped / welded, etc. SMA connectors are widely used in semi-rigid, semi-flexible semi-rigid, flexible cables, etc. The body material is usually brass or stainless steel, and the interface types include quick disconnect or standard.

[0004] However, the existing SMA connector is installed on the end plate by matching internal and external threads. The connector port is provided with an internal thread. When installing, the connector is locked after rotating multiple turns. When disassembling, the connector is loosened after rotating the connector in the opposite direction for multiple turns. When installing and disassembling the connector, corresponding rotation is required according to the number of turns of the thread, and special tools are usually required to tighten or loosen it. This not only increases the installation time, but may also cause signal loss or connection failure caused by unstable installation. The installation process is more cumbersome. Secondly, during the frequent disassembly and reinstallation of the existing SMA connector, its thread or bayonet part is prone to wear, resulting in reduced connection stability and even connection failure. Utility Model Content

[0005] The purpose of the utility model is to solve the above defects and provide a quick-install SMA connector to solve the technical problems that the connection and installation of the connector in the above background technology is relatively cumbersome, the threaded installation port of the connector is prone to wear, and the stability of the connection is affected.

[0006] The purpose of the utility model is achieved by the following methods:

[0007] A quick-install SMA connector comprises a shell and a wire. A through hole is provided in the shell, an insulator is nested in the through hole, a coaxial center pin is connected to the inside of the insulator, an internal thread portion is formed on the inner wall of the through hole, a positioning convex ring is formed on the surface of the insulator extending toward the open end of the through hole, a spring clip spring is concentrically connected to the positioning convex ring, a bending buckle is formed on the spring clip spring, an end of the bending buckle extends toward the open end of the through hole, and a limiting groove is formed on the bending buckle by bending, a clamping groove is provided on the inner wall of the through hole, a compression sheet is clamped in the clamping groove, a compression groove in contact with the spring clip spring is formed on the compression sheet, a sealing gasket is provided on the compression sheet, and the sealing gasket is sleeved with the bending buckle through an inner ring.

[0008] Further in the above description, the positioning protrusion ring is integrally formed with the insulator, and the positioning protrusion ring is coaxially matched with the center pin, and the spring clip is sleeved and installed with the positioning protrusion ring, and the provision of the spring clip enhances the connection stability and convenience of the connector.

[0009] Further in the above description, the end of the bending clip forms an inclined arc-shaped positioning portion, and a plurality of bending clips are provided, and the bending clips are distributed in a circular array on the spring clip. The arc-shaped positioning portion provided on the bending clip is matched with the connecting piece, so that the arc-shaped positioning portion can clamp and install the connecting piece to prevent the connecting piece from loosening and displacement.

[0010] Further in the above description, a snap-fitting protrusion is formed on the outer side surface of the clamping plate, and the snap-fitting protrusion is matched with the snap-fitting groove. The clamping plate is concentric with the spring clip through the pressing groove. The pressing groove is arranged at the bottom of the clamping plate, and the pressing groove is in close contact with the surface of the spring clip spring. The set clamping plate presses and fixes the spring clip spring to prevent the spring clip spring from loosening, thereby enhancing the connection stability and reliability of the connecting part.

[0011] Further in the above description, a mounting portion is formed on the outer surface of the shell, an external threaded portion is formed on one end of the mounting portion close to the wire, a mounting flange is connected to the external threaded portion through threads, and the external threaded portion can be connected to the mounting flange as required.

[0012] Further in the above description, one end of the shell extends to form a threading end, one end of the wire is connected to the center needle, and the other end of the wire extends to the threading end, and a wire protection sleeve is sleeved on the threading end, and the wire protection sleeve is provided to enhance the protection of the wire.

[0013] The beneficial effects of the utility model are as follows: through the sleeve cooperation between the spring clip and the positioning convex ring, and the compression installation of the compression sheet and the spring clip spring, when the sealing gasket on the compression sheet contacts the external connecting piece, the spring clip spring is tightly compressed by the compression sheet, and the bent buckle on the spring clip clip can enhance the fixing effect between the connector and the external connecting piece, reduce the loosening or falling off of the connection with the external connecting piece, and improve the stability of the connector connection. When in use, the arranged spring clip is connected with the internal threaded part of the through hole, which facilitates the installation and disassembly of the connector, so that when the internal threaded part of the connector is rotated to the limit position of the thread, the bent buckle on the spring clip clip is buckled with the external connecting piece, providing fixing force for the connector during use, enhancing the stability of the connector installation. At the same time, the setting of the sealing gasket further enhances the sealing performance of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional diagram of this embodiment;

[0015] Figure 2 This is a schematic diagram of the structure of the connected use state of this embodiment;

[0016] Figure 3 It is a cross-sectional view of the embodiment in the connected use state;

[0017] Figure 4 for Figure 3 A is a partial enlarged schematic diagram;

[0018] The reference numerals in the figure are: 1-shell, 2-wire, 3-through hole, 4-insulator, 5-center needle, 6-positioning convex ring, 7-spring spring, 8-bending buckle, 9-limiting groove, 10-clamping groove, 11-pressing plate, 12-sealing gasket, 13-arc-shaped positioning part, 14-clamping protrusion, 15-installing part, 16-external threaded part, 17-threading end, 18-wire protection sleeve, 19-connector, 20-positioning groove, 21-positioning protrusion. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] In this embodiment, refer to Figure 1-Figure 4A quick-install SMA connector specifically implemented in the present invention comprises a shell 1 and a wire 2. A through hole 3 is provided in the shell 1, an insulator 4 is nested in the through hole 3, a coaxial center pin 5 is connected to the inside of the insulator 4, an inner thread portion is formed on the inner wall of the through hole 3, a positioning convex ring 6 is formed on the surface of the insulator 4 extending toward the open end of the through hole 3, a spring clip spring 7 is coaxially connected to the positioning convex ring 6, a bending buckle 8 is formed on the spring clip spring 7, an end of the bending buckle 8 extends toward the open end of the through hole 3, and a limiting groove 9 is formed on the bending buckle 8 by bending, a clamping groove 10 is provided on the inner wall of the through hole 3, a clamping sheet 11 is clamped in the clamping groove 10, a pressing groove contacting the spring clip spring 7 is formed on the clamping sheet 11, a sealing gasket 12 is provided on the clamping sheet 11, and the sealing gasket 12 is sleeved with the bending buckle 8 through the inner ring.

[0021] The positioning protruding ring 6 is integrally formed with the insulator 4, and the positioning protruding ring 6 is coaxially matched with the center pin 5, and the spring clip spring 7 is sleeved and installed with the positioning protruding ring 6. The provision of the spring clip spring 7 enhances the connection stability and convenience of the connector.

[0022] An inclined arc-shaped positioning portion 13 is formed at the end of the bending buckle 8. Four bending buckles 8 are provided, and the four bending buckles 8 are distributed in a circular array on the spring clip 7. The arc-shaped positioning portion 13 provided on the bending buckle 8 is matched with the connecting member 19 so that the arc-shaped positioning portion 13 can clamp and install the connecting member 19 to prevent the connecting member 19 from loosening and displacement.

[0023] Two relatively arranged clamping protrusions 14 are formed on the outer side surface of the clamping plate 11, and the two clamping protrusions 14 are respectively snap-fitted with the corresponding two clamping grooves 10. The clamping plate 11 is concentric with the spring clip 7 through the pressing groove. The pressing groove is arranged at the bottom of the clamping plate 11, and the pressing groove is in close contact with the surface of the spring clip spring 7. The set clamping plate 11 presses and fixes the spring clip spring 7 to prevent the spring clip spring 7 from loosening, thereby enhancing the connection stability and reliability of the connecting piece 19.

[0024] The outer surface of the housing 1 is formed with a mounting portion 15, and the end of the mounting portion 15 close to the wire 2 is formed with an external threaded portion 16, and a mounting flange (not shown) is connected to the external threaded portion 16 through threads. The external threaded portion 16 can be connected to the mounting flange (not shown) as required.

[0025] One end of the housing 1 extends to form a threading end 17, one end of the wire 2 is connected to the center needle 5, and the other end of the wire 2 extends to the threading end 17, and a wire protection sleeve 18 is sleeved on the threading end 17. The wire protection sleeve 18 is provided to enhance the protection of the wire 2.

[0026] The specific use principle of this embodiment is: install the insulator 4 in the through hole 3 of the shell 1, connect the center pin 5 and the wire 2 on the insulator 4, and install the spring clip 7, the clamping sheet 11 and the sealing gasket 12 in the through hole 3 in turn, the inner ring of the spring clip 7 is sleeved with the positioning convex ring 6, the clamping sheet 11 is installed on the spring clip spring 7 through the pressing groove, and the clamping sheet 11 is matched with the clamping groove 10 in the through hole 3 through the clamping protrusion 14 on the outer side, and the inner ring of the sealing gasket 12 is sleeved with the bent buckle 8 on the spring clip spring 7 to be installed on the clamping sheet 11. When in use, the shell 1 is matched and connected with the external connecting piece 19 through the hole. The internal threaded portion of the through hole 3 is rotationally threadedly connected to the end of the connecting piece 19, and when the thread limit is reached, the bent buckle 8 on the spring clip 7 is snap-connected with the external connecting piece 19, so that the snap-in groove 10 on the bent buckle 8 is matched and snap-connected with the positioning protrusion 21 at the end of the connecting piece 19, thereby reducing the number of times the connector thread knob is turned, facilitating the installation and disassembly of the connector, and by matching the arc-shaped positioning portion 13 with the positioning groove 20 of the connecting piece 19, and matching the snap-in groove 10 with the positioning protrusion 21, a fixing force is provided during the use of the connector, reducing the loosening or falling off of the connection with the external connecting piece 19, and enhancing the stability of the connector installation.

[0027] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A quick-install SMA connector, comprising a housing and a conductor, wherein a through hole is provided in the housing, an insulator is nested in the through hole, a coaxial center pin is connected to the interior of the insulator, and an internal threaded portion is formed on the inner wall of the through hole, characterized in that: A positioning convex ring is formed on the surface of the insulator extending toward the open end of the through hole, a spring clip is concentrically connected to the positioning convex ring, a bending buckle is formed on the spring clip clip, the end of the bending buckle extends toward the open end of the through hole, and a limiting groove is formed on the bending buckle by bending, a clamping groove is formed on the inner wall of the through hole, a clamping plate is clamped in the clamping groove, a pressure groove contacting the spring clip is formed on the clamping plate, a sealing gasket is provided on the compression plate, and the sealing gasket is sleeved with the bending buckle through the inner ring.

2. A quick-release SMA connector according to claim 1, characterized in that: The positioning convex ring is integrally formed with the insulator, and the positioning convex ring is coaxially matched with the center needle, and the spring clip spring is sleeve-mounted with the positioning convex ring.

3. The quick-install SMA connector according to claim 1, characterized in that: The end of the bending buckle forms an inclined arc-shaped positioning portion, and a plurality of bending buckles are provided, and the bending buckles are distributed on the spring clip in a circumferential array.

4. The quick-install SMA connector according to claim 1, characterized in that: The outer side surface of the clamping sheet is formed with a clamping protrusion, which is matched with the clamping groove. The clamping sheet is concentric with the spring clip through the clamping groove. The clamping groove is arranged at the bottom of the clamping sheet, and the clamping groove is in close contact with the surface of the spring clip.

5. A quick-release SMA connector according to any one of claims 1 to 4, characterized in that: The outer surface of the shell is formed with a mounting portion, an end of the mounting portion close to the wire is formed with an external threaded portion, and a mounting flange is connected to the external threaded portion through threads.

6. A quick-release SMA connector according to any one of claims 1 to 4, characterized in that: One end of the shell extends to form a threading end, one end of the wire is connected to the center needle, and the other end of the wire extends to the threading end, and a wire protection sleeve is sleeved on the threading end.

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