CN111490377A - A connector capable of realizing double floating of inner and outer conductors - Google Patents

Abstract

A connector capable of realizing double floating of inner and outer conductors comprises a plurality of inner conductors, the ends of which are connected together by elastic structural members, the elastic structural members and the inner conductors are arranged in an inner hole of an insulating medium in a clearance fit manner, and the inner conductors can be freely compressed or reset in the inner hole of the insulating medium after being stressed; the outside of insulating medium sets up the shell, the shell comprises first shell and second shell, first shell is with insulating medium's global cladding, the second shell is the open tubular structure in bottom surface, the second shell relative first shell clearance fit insert in the middle of the first shell, and the second shell inserts the tip outer fringe of first shell one end and is equipped with the step, set up on the first shell and can hold this step and provide the step hole in second shell axial displacement space, be equipped with the spring in the middle of the step hole, the spring carries out axial compression or resets to the terminal surface of second shell. The invention can facilitate the connection and the disassembly of the product.

Description

A connector capable of realizing double floating of inner and outer conductors

technical field

The invention belongs to the field of microwave radio frequency coaxial connectors, in particular to a connector capable of realizing double floating of inner and outer conductors.

Background technique

At present, most of the board-to-board interconnection solutions on the market use three or more connectors to connect with each other, and then solder and connect with the printed board. As shown in FIG. 1 , the first connector 10 is connected to the second connector The adapter 11 is welded and fixed on the first module 12 and the second module 13 respectively, and the two ends of the adapter 14 are connected to the first connector 10 and the second connector 11 respectively. It is troublesome to disassemble the product after the welding of the board, which may cause damage to the printed board, and the disassembled connector may not be used for the second time, so the cost performance is poor, which is not conducive to the promotion and use of the interconnection scheme between the boards.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problem of inconvenient operation during interconnection and disassembly of microwave radio frequency coaxial connectors, and to provide a connector that can realize double floating of inner and outer conductors, which can quickly realize interconnection and disassembly between plates, and can ensure multiple The reliable contact between the inner and outer conductors and the system when the products are connected with each channel ensures the normal transmission of the RF performance of the products.

In order to achieve the above object, the present invention adopts the following technical scheme:

A connector capable of realizing double-floating of inner and outer conductors comprises a plurality of inner conductors whose ends are connected together by elastic structural members, the elastic structural members and the inner conductor are installed in the inner hole of the insulating medium in clearance fit, and the inner conductor is subjected to After the force, it can be freely compressed or returned in the inner hole of the insulating medium; the outer part of the insulating medium is provided with a casing, and the casing is composed of a first casing and a second casing, the first casing covers the circumference of the insulating medium, and the second casing is The second shell is a cylindrical structure with an open bottom surface, the second shell is inserted into the first shell with clearance fit relative to the first shell, and the outer edge of the end of the end of the second shell inserted into the first shell is provided with a step, and the first shell is on the first shell. A stepped hole capable of accommodating the step and providing an axial movement space of the second shell is opened, and a spring is arranged in the stepped hole, and the spring compresses or resets the end face of the second shell in an axial direction.

As a preferred solution of the present invention, the end of the inner conductor is provided with a step, which is connected to the elastic structural member through the step; the inner hole of the insulating medium includes a stepped hole for accommodating the inner conductor step and the elastic structural member and limiting the position.

As a preferred solution of the present invention, the peripheral surface of the insulating medium is provided with a boss, and the inner wall of the first housing is provided with a groove corresponding to the boss.

As a preferred solution of the present invention, a contact connection is adopted between the inner conductor and the external printed circuit board.

As a preferred solution of the present invention, the elastic force of the spring is adjusted according to the number of connectors connected to the printed circuit board and the bearing capacity of the printed circuit board, the elastic force decreases with the increase of the number of connectors, and the elastic force is the largest Do not exceed the maximum bearing capacity of the printed circuit board.

As a preferred solution of the present invention, the elastic structural member is an elastic part made of metal material.

As a preferred solution of the present invention, the first shell is composed of several parts spliced together as a whole.

As a preferred solution of the present invention, the insulating medium as a whole is composed of several parts spliced together.

Compared with the prior art, the present invention has the following beneficial effects: the connector structure can effectively solve the problem of poor contact with the system due to the difference in height of inner and outer conductors caused by assembly tolerances when multiple channels are rigidly interconnected. The invention can expand the scope of application of the product, and replace the current popular inter-board interconnection scheme on the market, that is, the scheme in which three or more connectors are connected to each other and then welded to the printed board by a floating structure, which is free of welding. The solution adopts contact connection between the inner and outer conductors of the product and the printed board, which provides more choices for users to select models. The invention can realize the double-floating connector of the inner and outer conductors, can greatly reduce the number of connectors used in the interconnection scheme, reduce the cost of the connector and avoid a series of problems caused by welding, facilitate the connection and disassembly of products, and has application prospects. considerable.

Further, the outer edge of the end of the second casing inserted into the first casing of the present invention is provided with a step, and the first casing is provided with a stepped hole capable of accommodating the step and providing an axial movement space for the second casing; the end of the inner conductor is provided with a step hole. The step is connected to the elastic structural member through the step; the inner hole of the insulating medium includes a stepped hole for accommodating the inner conductor step and the elastic structural member and limiting the position. By setting the stepped structure, the stepped hole is used to limit the position, which can avoid axial movement Parts fall off during the process.

Further, the first casing of the present invention is formed by splicing several parts as a whole, and the insulating medium is formed by splicing several parts as a whole, which facilitates the assembly of the first casing and the insulating medium.

Description of drawings

Figure 1 is a schematic structural diagram of a traditional inter-board interconnection scheme;

2 is a schematic structural diagram of an embodiment of a connector capable of realizing double floating of inner and outer conductors according to the present invention;

FIG. 3 is a schematic diagram of the position of steps and clearance fit of an embodiment of the connector of the present invention;

In the drawings: 1-first inner conductor; 2-elastic structural member; 3-second inner conductor; 4-insulating medium; 5-first shell; 6-second shell; 7-spring; 10-first connection 11-second connector; 12-first module; 13-second module; 14-adapter.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1 , the traditional inter-board interconnection scheme requires welding to fix the first connector 10 and the second connector 11 on the first module 12 and the second module 13 respectively, and the first module 12 and the second module 13 are respectively Welding with the printed circuit board, the welded product is more troublesome to disassemble, and may also cause damage to the printed circuit board, and the disassembled connector cannot be used for the second time.

Referring to FIG. 2, the present invention changes the above-mentioned traditional board-to-board interconnection scheme, that is, the scheme of connecting to the printed boards at both ends of the system by interconnecting three or more connectors into one channel, to a new type of inner and outer conductors. Double-floating connectors are interconnected. The center contact and shell of the connector adopt a double-floating structure. The center contact is composed of two or more inner conductors and multiple elastic structural members. The inner conductor and the inner conductor are combined. An elastic structural member is arranged between them for contact connection, and a spring is also arranged inside the casing, and the inner and outer conductors can be compressed within a certain range under the action of external force.

A plurality of inner conductors and elastic structural members are assembled in the inner holes of the insulating medium at intervals, and clearance fit is adopted between the inner conductors, the elastic structural members and the inner holes of the insulating medium, which can ensure that the inner conductors are free in the insulating medium after being stressed. During compression or homing, the inner conductor at the outermost end is provided with steps, and the inner hole of the insulating medium is also provided with a plurality of step holes, which can prevent the inner conductor or the elastic structure from falling off. The inner conductor at both ends is higher than the end face of the outer conductor. Because there is a compressible elastic structure in the middle of the inner conductor, when the two inner conductors higher than the end face of the outer conductor are subjected to the pressure exerted by the circuit board, the inner conductor can be axially directed to the product. The internal compression is carried out, so that the circuit board and the inner conductor rely on elastic pressure contact to realize the transmission of electrical signals between the circuit boards at both ends.

The first shell 5 is composed of several parts as a whole. The first shell 5 is provided with a stepped hole for accommodating the end step of the second shell 6, and the end step of the second shell 6 can be pivoted in the stepped hole of the first shell 5. When moving upward, a spring is arranged inside the stepped hole of the first shell 5, and a clearance fit is adopted between the first shell 5 and the second shell 6. When the end face of the first shell 5 or the second shell 6 is subjected to the external force of the circuit board or the external force is released After that, it can be freely retracted or reset in the axial direction, which can effectively eliminate the problem of poor contact caused by assembly tolerances, so as to ensure the simultaneous connection of multiple channels. The steps and step holes provided on the shell are used to ensure the reliable assembly of the shell and the spring. This structure can effectively solve the problem of poor contact with the system due to the different heights of inner and outer conductors caused by assembly tolerances when multiple channels are rigidly interconnected.

In an embodiment of the present invention, the ends of the first inner conductor 1 and the second inner conductor 3 are connected together by an elastic structural member 2, and the elastic structural member 2 is an elastic part made of metal material. The elastic structural member 2 and the inner conductor are installed in the inner hole of the insulating medium 4 in a clearance fit. The end of the inner conductor is provided with a step, which is connected to the end of the elastic structural member 2 through the step. The inner hole of the insulating medium 4 contains steps to accommodate the inner conductor. And the stepped hole of the elastic structure 2 and the position limit, the inner conductor can be freely compressed or returned in the inner hole of the insulating medium 4 after being stressed. The outer part of the insulating medium 4 is provided with a casing, the casing is composed of a first casing 5 and a second casing 6, the first casing 5 covers the peripheral surface of the insulating medium 4, the peripheral surface of the insulating medium 4 is provided with a boss, and the first casing The inner wall of 5 is provided with a matching groove corresponding to the boss. The second shell 6 is a cylindrical structure with an open bottom surface. The second shell 6 is inserted into the first shell 5 in a clearance fit with respect to the first shell 5 , and the outer edge of the end of the end of the second shell 6 inserted into the first shell 5 is provided There is a step, the first shell 5 is provided with a stepped hole that can accommodate the step and provide the axial movement space of the second shell 6, and a spring 7 is arranged in the stepped hole, and the spring 7 axially compresses or compresses the end face of the second shell 6. reset. The elastic force of the spring 7 is adjusted according to the number of connectors connected to the printed circuit board and the bearing capacity of the printed circuit board. The elastic force decreases with the increase of the number of connectors, and the maximum elastic force does not exceed the maximum bearing force of the printed circuit board. . When the number of products is small, the force of the spring can be relatively increased according to the force of the printed board, but avoid damage to the printed board due to excessive force.

The connector of the invention can quickly realize the interconnection and disassembly between the boards, at the same time, it can ensure the reliable contact between the inner and outer conductors and the system when the products of multiple channels are connected, ensure the normal transmission of the radio frequency performance of the products, and can greatly reduce the number of connectors in the interconnection scheme. It reduces the cost of the connector and avoids a series of problems caused by welding, facilitates the connection and disassembly of the product, provides more choices for user selection, expands the scope of application of the product, and has considerable application prospects. .

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention. Those skilled in the art should understand that, without departing from the spirit and principles of the present invention, the technical solutions also Several simple modifications and substitutions can be made, and these modifications and substitutions also fall within the protection scope covered by the claims.

Claims (8)

1. A connector capable of realizing double-floating of inner and outer conductors, characterized in that it comprises a plurality of inner conductors whose ends are connected together by an elastic structural member (2), and the elastic structural member (2) is gap-fitted with the inner conductor. Installed in the inner hole of the insulating medium (4), the inner conductor can be freely compressed or returned in the inner hole of the insulating medium (4) after being stressed; an outer casing is provided on the outside of the insulating medium (4), and the outer casing is formed by the No. A casing (5) is composed of a second casing (6), the first casing (5) covers the peripheral surface of the insulating medium (4), the second casing (6) is a cylindrical structure with an open bottom, and the second casing (5) 6) The first shell (5) is inserted into the first shell (5) with a clearance fit, and the outer edge of the end of the second shell (6) inserted into the first shell (5) is provided with a step, the first shell (5) is provided with a stepped hole that can accommodate the step and provide a space for the axial movement of the second shell (6), and a spring (7) is arranged in the stepped hole, and the spring (7) acts on the end face of the second shell (6). Axial compression or reduction. 2. The connector capable of realizing double floating of inner and outer conductors according to claim 1, characterized in that: the end of the inner conductor is provided with steps, and is connected to the elastic structural member (2) through the steps; The inner hole of the insulating medium (4) includes a step hole for accommodating the inner conductor step and the elastic structural member (2) and for limiting the position. 3. The connector capable of realizing double floating of inner and outer conductors according to claim 1, characterized in that: the peripheral surface of the insulating medium (4) is provided with a boss, and the inner wall of the first housing (5) is provided with a boss corresponding to the boss matching grooves. 4. The connector capable of realizing double-floating of inner and outer conductors according to claim 1, wherein the inner conductor and the external printed circuit board are connected by contact. 5. The connector capable of realizing double floating of inner and outer conductors according to claim 1, wherein the elastic force of the spring (7) is determined according to the number of connectors connected to the printed circuit board and the bearing capacity of the printed circuit board Adjustment, the elastic force decreases with the increase of the number of connectors, and the maximum elastic force does not exceed the maximum bearing force of the printed circuit board. 6 . The connector capable of realizing double floating of inner and outer conductors according to claim 1 , wherein the elastic structural member ( 2 ) is an elastic part made of metal material. 7 . 7 . The connector capable of realizing double floating of inner and outer conductors according to claim 1 , wherein the first shell ( 5 ) is formed by splicing several parts as a whole. 8 . 8 . The connector capable of realizing double floating of inner and outer conductors according to claim 1 , wherein the insulating medium ( 4 ) is formed by splicing several parts as a whole. 9 .

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