Threaded installation connector

Abstract

The utility model discloses a threaded installation connector, which comprises an inner conductor, an insulator and an outer conductor, the inner conductor, the insulator and the outer conductor are sequentially arranged from inside to outside, the left end of the connector is a standard SMP pin type interface, and the right end of the connector is the inner conductor connected with a printed board. According to the utility model, the frictional resistance between the micro-strip and the metalized via hole is small, the plugging force is soft, and the assembly and disassembly are convenient; according to the utility model, relative rotation between adjacent parts of the inner conductor, the insulator and the outer conductor is not caused, so that risks of loosening and structure failure between the parts are avoided. The threaded installation connector can be reliably connected with a metalized through hole and is convenient to install and disassemble, and the assembling efficiency of a whole machine system is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a screw mounting connector and belongs to the technical field of radio frequency coaxial connector. BACKGROUND

[0002] The screw mounting connector has the advantages of convenient installation and disassembly and has been widely applied. In some whole machine systems, the screw mounting connector is usually screwed into a metal structural member, the inner conductor of the tail end cylinder of the connector penetrates through the metalized via of the printed board pasted on the end face of the metal structural member and extends out of the via by about 1-2mm, and the tin soldering mode is used to weld the extended part of the inner conductor and the printed board together. Although this tin soldering mode is reliable, it is relatively difficult to disassemble after welding, and when a certain channel connector needs to be disassembled due to damage, local heating will generate stress and deformation, and there is a risk of local deformation of the printed board. If the coaxial inner conductor is used in interference fit with the metalized via, the screw mounting connector will be subjected to great resistance when being screwed into the installation hole, and is forcibly screwed in, and when the interference amount is large, the inner conductor will be pushed out from the interface end, causing damage to the connector. Under this background, there is an urgent need for a screw mounting connector which can be reliably connected with the metalized via and conveniently disassembled. SUMMARY

[0003] The utility model discloses a screw mounting connector, which is used to solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A screw mounting connector, comprising an inner conductor, an insulator and an outer conductor, wherein the inner conductor, the insulator and the outer conductor are arranged from inside to outside, the left end of the connector is a standard SMP pin type interface, and the right end is an inner conductor connected with a printed board.

[0006] Preferably, the outer shape of the inner conductor is a stepped cylinder, the right end step of the inner conductor is matched with the stepped hole of the insulator for limiting during assembly, the left end of the inner conductor is an SMP series pin head, and a metal protrusion with a taper is arranged around the outer circle at the middle position of the middle segment of the inner conductor, and the metal protrusion extends into the insulator for fixing the inner conductor.

[0007] Preferably, the metal protrusion is a multi-section discontinuous protrusion processed by plunge milling, which is used to prevent relative rotation between the inner conductor and the insulator.

[0008] Preferably, the right end of the inner conductor extends beyond the right end face of the insulator, the extended part of the tail of the inner conductor is designed as a "lotus" type, the right end of the inner conductor is provided with a guide conical surface with a diameter smaller than the aperture of the metallized via, so that the "lotus" head can be inserted into the metallized via; adjacent to the conical surface is a convex cylindrical surface with a diameter larger than the metallized via, and the left end of the cylindrical surface is transitioned to a size smaller than the aperture of the metallized via in the form of a conical surface.

[0009] Preferably, the "lotus" type is a "lotus" shape formed by connecting the two ends of the convex cylinder with a conical body and processing multiple grooves.

[0010] Preferably, the outer shape of the insulator is a stepped cylinder, the left end step of the insulator is matched with the stepped hole of the shell for limiting during assembly; the right end of the insulator extends beyond the right end face of the outer conductor by a length, the extended part of the insulator is fitted into the mounting hole of the metal structural member in the whole machine system, and the right end step of the insulator is matched with the stepped hole of the metal structural member in the whole machine system for limiting during assembly.

[0011] Preferably, the outer conductor is provided with external threads, a threaded guide section and a slot, the threaded guide section is a circular guide section with a diameter smaller than the minor diameter of the threads provided at the right end of the shell, for guiding the insertion of the outer conductor into the threaded hole of the mounting plate; the slot is a slot penetrating through the outer conductor along the axial direction for a length and symmetric to the axis, for inserting a dismounting clamp to screw or unscrew the threaded part of the product into or out of the mounting hole.

[0012] Preferably, the outer conductor is provided with a through hole, the left end of the through hole is an SMP pin type interface hole, a limiting step is provided in the middle part of the through hole, and the left end step face of the insulator abuts against the limiting step; a metal small protrusion with a taper is provided around the hole wall at the middle part of the right end of the through hole, the metal small protrusion extends into the insulator with relatively soft hardness, for fixing the insulator.

[0013] Preferably, the metal small protrusion is a multi-section discontinuous protrusion machined by plunge milling, for preventing rotation between the outer conductor and the insulator.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention changes the inner conductor that penetrates the metallized via of the printed circuit board from a cylindrical shape to a multi-slotted, multi-petal "lotus" shape, forming elastic contact with the metallized via with a certain tolerance, so that the friction resistance between the microstrip and the metallized via is small, the insertion and removal force is gentle, and the assembly and disassembly are convenient; the present invention provides a plurality of discontinuous tapered small protrusions with anti-rotation functions on the outer diameter of the inner conductor and the inner hole of the outer conductor, so that when the threaded connector is screwed into or out of the metal structure, the slight friction resistance between the "lotus"-shaped microstrip and the metallized via will not cause relative rotation between adjacent parts of the inner conductor, insulator, and outer conductor, thereby avoiding the risk of loosening between parts and structural failure. The threaded connector of the present invention can be reliably connected to the metallized via and is easy to install and disassemble, greatly improving the assembly efficiency of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of a half-section structure of the present utility model;

[0016] Figure 2 It is a schematic diagram of the inner conductor of the utility model;

[0017] Figure 3 This is a schematic diagram of the utility model being installed in a complete system;

[0018] In the figure: 1-inner conductor; 2-insulator; 3-outer conductor, 4-metal structural part, 5-printed circuit board. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely explained below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] As shown in the figure, a threaded connector includes an inner conductor 1, an insulator 2, and an outer conductor 3, arranged in order from the inside out. The left end of the connector is a standard SMP pin interface, and the right end is the inner conductor 1 connected to the printed circuit board 5.

[0021] The inner conductor 1 is cylindrical with a stepped shape. The step on the right end of the inner conductor 1 mates with the stepped hole in the insulator 2, limiting its position during assembly. The left end of the inner conductor 1 is an SMP series pin head. A tapered metal protrusion is positioned along the outer circumference of the middle section. This metal protrusion extends into the relatively soft insulator 2 to secure the inner conductor 1. This metal protrusion is milled into multiple, discontinuous sections to prevent relative rotation between the inner conductor 1 and the insulator 2.

[0022] The right end of the inner conductor 1 extends out of the right end surface of the insulator 2, and the tail of the extended inner conductor 1 is designed as a "lotus" shape, that is, a "lotus" shape formed by connecting the two ends of a convex cylinder with a cone and processing a plurality of grooves. The right end of the inner conductor 1 is provided with a guide conical surface with a diameter smaller than the aperture of the metalized via, so that the "lotus" head can be smoothly inserted into the metalized via; adjacent to the conical surface is a slightly convex cylindrical surface with a diameter slightly larger than the metalized via, which can be shrunk to the aperture of the via after processing a plurality of grooved petals, and can be in reliable contact with the via by relying on the elastic recovery force after shrinking; the left end of the cylindrical surface transitions to a size smaller than the aperture of the metalized via in the form of a conical surface, avoiding the convex cylinder being too long and the insertion force being too large. The inner conductor of the utility model is changed from a cylindrical shape to a multi-petal "lotus" shape with grooves, which forms elastic contact with the metalized via with a certain tolerance, so that the frictional resistance between the microstrip and the metalized via is small, the insertion and extraction force is soft, and the assembly and disassembly are convenient. Both the defect of large frictional resistance of the interference fit inner conductor and the problem of difficult assembly and disassembly of the welded cylindrical inner conductor are solved.

[0023] The insulator 2 has a stepped cylindrical shape, the left end step of the insulator 2 is matched with the stepped hole of the shell 3, which is used for limiting during assembly; the right end of the insulator 2 extends out of the right end surface of the outer conductor 3 by a length, the extended part of the insulator 2 is fitted into the mounting hole of the metal structural part 4 in the whole machine system, and the right end step of the insulator 2 is matched with the stepped hole of the metal structural part 4 in the whole machine system, which is used for limiting during assembly.

[0024] The outer conductor 3 is externally provided with external threads, a threaded guide section and a slot. The threaded guide section is a circular guide section with a diameter smaller than the small diameter of the threads, which is arranged at the right end of the shell, and is used for quickly inserting the outer conductor 3 into the threaded hole of the metal structural part 4; the slot is a slot penetrating through the outer conductor 3 along the axial length and symmetric to the axis, which is used for inserting the assembly and disassembly clamp to quickly and completely screw the threaded part of the product into or out of the mounting hole. The threaded mounting of the connector of the utility model has the advantages of reliable connection and convenient assembly and disassembly, and greatly improves the assembly efficiency of the whole machine system.

[0025] The outer conductor 3 is internally provided with a through hole, the left end of the through hole is an SMP pin type interface hole, the middle part of the through hole is provided with a limiting step, and the left end step surface of the insulator 2 abuts against the limiting step; a metal small protrusion with a taper is arranged along the hole wall at the right end middle position of the through hole, the metal small protrusion extends into the insulator 2 which is relatively soft in material hardness, so as to fix the insulator 2. The metal small protrusion is a multi-section discontinuous protrusion processed by plunge milling, which prevents the rotation between the outer conductor 3 and the insulator 2. The multi-section discontinuous protrusion with a taper which is provided with the anti-rotation function on the outer diameter of the inner conductor 1 and the inner hole of the outer conductor 3 makes the connector which is screwed to be rotated into or out of the metal structure 4, the small frictional resistance between the 'lotus' type microstrip and the metallized via, and the relative rotation between the adjacent parts of the inner conductor, the insulator and the outer conductor does not occur, so that the risk of loosening and structural failure between the parts is avoided.

[0026] The above is the preferred embodiment of the utility model, and for the ordinary skilled in the art, according to the teaching of the utility model, the change, modification, replacement and modification of the embodiment without departing from the principle and spirit of the utility model still fall within the protection scope of the utility model.

Claims

1. A threaded mounting connector characterized by, The connector comprises an inner conductor, an insulator and an outer conductor, which are arranged from inside to outside, the left end of the connector is a standard SMP pin type interface, and the right end is an inner conductor connected with a printed board.

2. A threaded connector as defined in claim 1, wherein The outer shape of the inner conductor is a stepped cylinder, the right end step of the inner conductor is matched with the stepped hole of the insulator, and is used for limiting during assembly; the left end of the inner conductor is an SMP series pin head, and a metal protrusion with a taper is arranged on the middle part of the middle segment along the outer circle, the metal protrusion extends into the insulator and is used for fixing the inner conductor.

3. A threaded connector as defined in claim 2, wherein, The metal protrusion is a multi-section discontinuous protrusion processed by plunge milling, which is used for preventing relative rotation between the inner conductor and the insulator.

4. A threaded connector as defined in claim 1, wherein, A part of the right end of the inner conductor extends out of the right end surface of the insulator, the extended part of the inner conductor is designed as a "lotus" type, a guide conical surface with a smaller diameter than the metallized via hole is arranged on the right end of the inner conductor, so that the "lotus" head can be inserted into the metallized via hole; a protruding cylindrical surface adjacent to the conical surface has a diameter larger than the metallized via hole, and the left end of the cylindrical surface is transitioned to a size smaller than the metallized via hole in the form of a conical surface.

5. A threaded connector as defined in claim 4, wherein, The "lotus" type is a "lotus" shape formed by connecting the protruding cylindrical bodies at both ends with conical bodies and processing multiple grooves.

6. A threaded connector as defined in claim 1, wherein, The outer shape of the insulator is a stepped cylinder, the left end step of the insulator is matched with the stepped hole of the shell, and is used for limiting during assembly; the right end of the insulator extends out of the right end surface of the outer conductor by a length, the extended part of the insulator is arranged in the mounting hole of the metal structural member in the whole machine system, the right end step of the insulator is matched with the stepped hole of the metal structural member in the whole machine system, and is used for limiting during assembly.

7. A threaded connector as defined in claim 1, wherein, The outer conductor is externally provided with an external thread, a threaded guide segment and a slot, the threaded guide segment is a circular guide segment with a smaller diameter than the small diameter of the thread arranged at the right end of the shell, which is used for guiding the outer conductor to be inserted into the threaded hole of the mounting plate; the slot is a slot penetrating through the outer conductor along the axial length and symmetric to the axis from the left end surface of the outer conductor, which is used for inserting a dismounting clamp to screw or unscrew the threaded part of the product into or out of the mounting hole.

8. A threaded connector as defined in claim 1, wherein, The outer conductor is internally provided with a through hole, the left end of the through hole is an SMP pin type interface hole, a limiting step is arranged in the middle part of the through hole, and the left end step surface of the insulator abuts against the limiting step; a metal small protrusion with a taper is arranged around the hole wall at the middle part position of the right end of the through hole, the metal small protrusion extends into the insulator with a relatively soft hardness, and is used for fixing the insulator.

9. A threaded connector as defined in claim 8, wherein, The metal small protrusion is a multi-section discontinuous protrusion processed by plunge milling, which is used for preventing rotation between the outer conductor and the insulator.

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