CN216698816U

CN216698816U - Movable contact pin type microstrip connector

Info

Publication number: CN216698816U
Application number: CN202220252099.4U
Authority: CN
Inventors: 刘泽民; 孙琪宁
Original assignee: Ezcon Telecom Technology Changzhou Co ltd
Current assignee: Ezcon Telecom Technology Changzhou Co ltd
Priority date: 2022-02-07
Filing date: 2022-02-07
Publication date: 2022-06-07
Anticipated expiration: 2032-02-07

Abstract

The utility model provides a movable pin type microstrip connector, comprising: a housing, an inner conductor, and an insulator; the inner conductor is inserted into the shell, and the insulator is embedded in the inner conductor and the shell; the inner conductor comprises an inner conductor body and a contact pin which are connected in a split mode, and the inner conductor body is clamped in the insulator; the tail end of the inner conductor body is provided with a jack, the contact pin is detachably fixed in the jack, and the tail of the contact pin extends out of the shell and is electrically connected with an external circuit. The utility model solves the problems of electromagnetic interference and reduced transmission performance caused by fixing the inner conductor on the insulator by using the epoxy pin, and the problems of easy deformation and performance influence caused by repeated welding of the microstrip connector and the microstrip circuit.

Description

Movable contact pin type microstrip connector

Technical Field

The utility model belongs to the technical field of communication connectors, and particularly relates to a movable pin type microstrip connector.

Background

The conventional microstrip connector on the market only has a single structural form and can only be installed and used for the same specific microstrip circuit, the shapes of contact pins of the microstrip connector are different and are mainly designed according to the actual needs of the circuit, the microstrip connector cannot be used universally for the actual needs of different circuits, and the microstrip connector of various types (or shapes) is required to meet the actual needs of various circuits, so the cost is greatly increased.

The existing SMA type microstrip connector structure is shown in fig. 1, and includes a housing 1 ', an insulator 2', and an inner conductor 3 ', and the way of fixing the inner conductor and the insulator is to punch a hole on a metal housing and an insulating support and pour epoxy resin 4', that is, the way of using an epoxy pin, so that the structure can make a high-frequency signal or a harmonic signal thereof easily leak through a through hole, or an external signal is coupled in through the through hole to generate electromagnetic interference. Furthermore, the dielectric constant of the epoxy resin is about 4, the dielectric support is usually made of polytetrafluoroethylene, and the dielectric constant of the insulation support is about 2, so that the characteristic impedance of the cross section at the epoxy pin deviates from the nominal impedance due to too large deviation of the dielectric constants of the epoxy resin and the polytetrafluoroethylene, the voltage standing wave ratio performance is affected, and the transmission performance is reduced.

In addition, the microstrip connector of this structure is mounted by welding the inner conductor of the connector and the microstrip line together, and once a problem occurs in the welding, the entire connector must be removed, the inner conductor and the microstrip line are welded, and then the inner conductor and the microstrip line are welded again. The welding is repeated, the insulating medium is easy to deform due to welding heat, the performance is affected, the whole connector is scrapped, and the production cost is greatly improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a movable contact pin type microstrip connector to solve the problems that electromagnetic interference is generated when an inner conductor is fixed on an insulator by an epoxy pin, the transmission performance is reduced, and the performance is influenced because the microstrip connector and a microstrip circuit are easily deformed after repeated welding.

A movable pin-type microstrip connector comprising: a housing, an inner conductor and an insulator;

the inner conductor is inserted into the shell, and the insulator is embedded between the inner conductor and the shell;

the inner conductor comprises an inner conductor body and a contact pin which are connected in a split mode, and the inner conductor body is clamped in the insulator; the tail end of the inner conductor body is provided with a jack, the contact pin is detachably fixed in the jack, and the tail of the contact pin extends out of the shell and is electrically connected with an external circuit.

Preferably, the insulator is polytetrafluoroethylene polymer, be equipped with the barb structure on the outer wall of inner conductor body, the inner conductor body passes through barb structure cooperation is fixed in the insulator.

Preferably, a step-shaped groove is formed in the inner wall of the shell, and the insulator is located in the groove.

As an alternative, the pin is a close fit with the socket.

Preferably, the outer wall of the contact pin is provided with a convex step, and the step is tightly matched with the jack.

As another alternative, the inner conductor body is provided with a strip-shaped groove communicated with the jack at the jack, the strip-shaped groove extends along a direction parallel to the depth direction of the jack, and the front end of the strip-shaped groove is provided with an insertion end face; the tail end of the inner conductor body is further provided with a clamping groove used for providing a twisting space for the contact pin, the clamping groove is located in a radial plane of the inner conductor body and communicated with the strip-shaped groove, a protrusion is arranged on the outer wall of the contact pin, the protrusion can be inserted into the jack along the strip-shaped groove until the protrusion abuts against the insertion end face, and the protrusion can be screwed into the clamping groove.

Preferably, the outer wall of the contact pin is provided with a raised limiting ring, and the limiting ring is abutted to the tail end face of the insulator.

The utility model has the beneficial effects that:

the inner conductor fixing structure does not adopt an epoxy pin type any more, and changes a clamping mode (such as a barb structure) of the inner conductor, so that the problem of electromagnetic interference generated by a pin hole is avoided, the characteristic impedance of the cross section at the epoxy pin is prevented from deviating from the nominal impedance due to too large dielectric constant deviation, and the influence on the voltage standing wave ratio performance and the reduction of the transmission performance of the voltage standing wave ratio are avoided.

The inner conductor microstrip connector is mounted in a split structure, the contact pin is detachably fixed on the inner conductor body, and then the contact pin and the microstrip line are welded together, so that once a problem occurs in welding, the whole connector does not need to be disassembled, and the contact pin only needs to be disassembled from the connector main body part, thereby avoiding the phenomenon that the insulating medium is easy to deform due to welding heat, the performance is influenced and the whole connector is scrapped due to repeated welding.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic diagram of a prior art SMA-type microstrip connector configuration;

FIG. 2 is a schematic view of the internal structure of embodiment 1 of the present invention;

FIG. 3 is a schematic cross-sectional view of portion A-A of FIG. 2;

FIG. 4 is a schematic view of the internal structure of embodiment 2 of the present invention;

FIG. 5 is a schematic cross-sectional view of the portion B-B of FIG. 4;

FIG. 6 is a schematic sectional view showing the screw-on pin according to embodiment 2.

Labeled as: 1. a housing; 2. an insulator; 3. a groove; 4. an inner conductor body; 5. inserting a pin; 6. a barb structure; 7. a jack; 8. a step; 9. a limiting ring; 10. a strip-shaped groove; 11. an insertion end face; 12. a protrusion; 13. a clamping groove; 1' a housing; 2', an insulator; 3', an inner conductor; epoxy resin.

Detailed Description

Example 1

As shown in fig. 2 to 3, an active pin type microstrip connector includes: a housing 1, an inner conductor and an insulator 2.

The inner wall of the shell 1 is provided with a step-shaped groove 3, the insulator is made of polytetrafluoroethylene polymer which can deform when being extruded, and the outer wall of the insulator 2 is tightly attached to the groove 3 and then positioned in the shell 1.

The inner conductor comprises an inner conductor body 4 and a contact pin 5 which are connected in a split mode, the inner conductor body 4 is inserted into the shell 1, and the insulator 2 is embedded between the inner conductor body 4 and the shell 1. The split structure of the inner conductor avoids influencing the performance of the whole component when the connector is disassembled and replaced; when the microstrip circuit is welded, only the contact pin 5 needs to be welded, the connector main body is not affected, and the connector main body can be plugged and replaced at will. The connector body may be a male or female connector (SMA female is illustrated here) with the end connected to the pin having the receptacle 7.

Be equipped with barb structure 6 on the outer wall of inner conductor body 4, be equipped with on the insulator 2 with 6 complex cell bodies of barb structure, during the assembly, inner conductor body 4 extrudees the insulator through 6 extrusion insulators of barb structure, until 6 joints of barb structure are in the cell body of insulator 2. The tail end of the inner conductor body 4 is provided with a jack 7, the contact pin 5 is detachably fixed in the jack 7, and the tail of the contact pin 5 extends out of the shell 1 and is welded on an external circuit.

Specifically, the outer wall of the contact pin 5 is provided with a convex step 8, and the step 8 is tightly matched with the jack 7 to prevent the contact pin 5 from falling off from the inner conductor body 4. The outer wall of the contact pin 5 is provided with a raised limit ring 9, and the limit ring 9 is abutted to the tail end of the insulator 2.

The structure of the utility model can be suitable for other microstrip connectors, the connector body can be replaced by N-type, BNC-type, 2.92-type and other types of connectors at will, the shape of the contact pin 5 can be replaced at will according to the circuit requirement, and the microstrip connector has wider applicability.

Example 2

As shown in fig. 4 to fig. 6, the present embodiment is different from embodiment 1 in that the inner conductor body 4 is provided with a strip-shaped groove 10 at the jack 7, the strip-shaped groove 10 extends in a direction parallel to the depth of the jack 7, and the front end of the strip-shaped groove 10 is provided with an insertion end surface 11; the outer wall of the contact pin 5 is provided with a bulge 12, the bulge 12 can be inserted into the jack 7 along the strip-shaped groove 10 until abutting against the contact end face 11, and the bulge 12 is tightly matched with the strip-shaped groove 10. The tail end of the inner conductor body 4 is also provided with a clamping groove 13 for providing a screwing space for the contact pin 5, the clamping groove 13 is located in the radial plane of the inner conductor body 4 and is communicated with the strip groove 10, and the protrusion 12 abuts against the connection end face 11 and then screws the contact pin 5, so that the protrusion 12 is screwed into the clamping groove 13 and is tightly matched with the clamping groove 13, and the contact pin 5 is fixed on the inner conductor body 4.

The other structure of this embodiment is the same as embodiment 1.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A movable pin type microstrip connector, comprising: a housing, an inner conductor and an insulator;

2. The movable pin type microstrip connector according to claim 1 wherein a raised limit ring is provided on the outer wall of said pin, said limit ring abutting against the tail end face of said insulator.

3. The movable pin-type microstrip connector according to claim 1, wherein the insulator is a polytetrafluoroethylene polymer, a barb structure is provided on an outer wall of the inner conductor body, and the insulator fixes the inner conductor body by fitting with the barb structure.

4. The movable pin-in microstrip connector according to claim 1 wherein said housing has a stepped recess in an inner wall thereof, said insulator being positioned in said recess.

5. The movable pin microstrip connector according to any one of claims 1 to 4, wherein said pin is a tight fit with said receptacle.

6. The movable pin-type microstrip connector according to claim 5, wherein a convex step is provided on the outer wall of the pin, and the step is tightly fitted with the jack.

7. The movable pin type microstrip connector according to any one of claims 1 to 4, wherein the inner conductor body is provided with a strip-shaped groove at the jack, the strip-shaped groove is communicated with the jack, the strip-shaped groove extends in a direction parallel to the depth direction of the jack, and the front end of the strip-shaped groove is provided with an insertion end face; the tail end of the inner conductor body is further provided with a clamping groove used for providing a twisting space for the contact pin, the clamping groove is located in a radial plane of the inner conductor body and communicated with the strip-shaped groove, a protrusion is arranged on the outer wall of the contact pin, the protrusion can be inserted into the jack along the strip-shaped groove until the protrusion abuts against the insertion end face, and the protrusion can be screwed into the clamping groove.