CN107221776B - Radio frequency coaxial connector with strong impact resistance - Google Patents
Radio frequency coaxial connector with strong impact resistance Download PDFInfo
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- CN107221776B CN107221776B CN201710547384.2A CN201710547384A CN107221776B CN 107221776 B CN107221776 B CN 107221776B CN 201710547384 A CN201710547384 A CN 201710547384A CN 107221776 B CN107221776 B CN 107221776B
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- insulator
- outer conductor
- hole
- shell
- central axis
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/03—Contact members characterised by the material, e.g. plating, or coating materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/516—Means for holding or embracing insulating body, e.g. casing, hoods
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6581—Shield structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
Abstract
The invention provides a radio frequency coaxial connector with strong impact resistance, which has a simple structure, wherein a female head connecting section and a male head connecting section are matched with a fastener and a combining piece, so that a first insulator and an outer conductor inside the radio frequency coaxial connector are effectively prevented from rotating relatively when the radio frequency coaxial connector receives impact, looseness is prevented, the impact resistance of the radio frequency coaxial connector is improved, and the reliability and the safety of connection between the first insulator and the outer conductor are ensured; the sealing ring is arranged at the matching part of the screw cap and the screw cap hole, so that the sealing property is ensured, and the influence of radio frequency leakage is eliminated; the gold plating on the surface of the contact pin ensures good signal communication in long-term use, and the nickel plating on the shell enhances the corrosion resistance of the radio frequency coaxial connector.
Description
Technical Field
The invention relates to the technical field of electromechanical elements, in particular to a radio frequency coaxial connector with strong impact resistance.
Background
A radio frequency coaxial connector is generally considered to be a component attached to a cable or mounted on an instrument as a component to which a transmission line is electrically connected or separated. The radio frequency coaxial connector belongs to a mechatronic product, and compared with other electronic components, the radio frequency coaxial connector has shorter development history. UHF connectors appeared in 1930 as the earliest radio frequency coaxial connectors. In the period of world war ii, due to urgent needs of war, with the development of thunder, radio and microwave communication, medium-sized series such as N, C, BNC, TNC and the like are generated, miniaturized products such as SMA, SMB, SMC and the like appear in 1958, U.S. military standard MIL-C-39012 general radio frequency coaxial connector standard is formulated in 1964, and then the radio frequency coaxial connector is developed to the direction of standardization, serialization and universalization. In more than sixty years, through the common efforts of experts of various countries, the radio frequency coaxial connector forms an independent and complete professional system and becomes an important component in a connector family. Is an indispensable key element of a coaxial transmission system. The development technology of radio frequency coaxial connectors in the countries of America, english, french and the like is in the leading position, the design, production, test and use technology of the radio frequency coaxial connectors tends to be perfect, a complete standard system is formed, raw materials, auxiliary materials, a test system, assembly tools and the like are standardized, and specialized scale production is carried out.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the radio frequency coaxial connector with strong impact resistance, which has the characteristics of impact resistance, impedance matching resistance and standing wave improvement.
The technical scheme for solving the problems comprises the following steps: a radio frequency coaxial connector with strong impact resistance comprises a female head connecting section and a male head connecting section, wherein the female head connecting section comprises a contact pin, a first insulator, an outer conductor and a threaded sleeve; the contact pin is a cylinder, one end of the contact pin is provided with a conical head, the conical angle is 50 degrees, and a first step, a second step, a third step and a fourth step are arranged on the contact pin;
the first insulator is of a cylindrical hollow structure, the upper end and the lower end of the first insulator are not blocked, a first annular groove is formed in one end face of the first insulator, the central axis of the first annular groove is overlapped with the central axis of the first insulator, a first annular boss and a clamping piece are sequentially arranged on the other end face of the first insulator along the radial direction with the diameter increased, the central axis of the clamping piece is overlapped with the central axis of the first insulator, the clamping piece comprises a disc and fan-shaped bulges, a mounting hole is formed in the center of the disc, a plurality of fan-shaped bulges are arranged outside the mounting hole of the disc, the fan-shaped bulges are annularly and uniformly distributed, and included angles between every two adjacent fan-shaped bulges are equal;
a circular through hole is formed in the outer conductor, the central axis of the circular through hole is overlapped with the central axis of the outer conductor, a second annular boss and a joint are arranged in the circular through hole, the joint is located below the second annular boss, the projection of the joint in the horizontal direction is annular, a plurality of fan-shaped holes are formed in the joint, the fan-shaped holes are annularly distributed around the central axis of the joint, and the included angles between every two adjacent fan-shaped holes are equal; a first shaft shoulder, a second shaft shoulder and a third shaft shoulder are arranged on the cylindrical surface of the outer conductor, a second annular groove is arranged on one end face of the outer conductor, and the section of the second annular groove is trapezoidal;
the outer conductor is positioned in the screw sleeve, and a sealing ring is arranged at the third shaft shoulder; the first insulator is positioned in the circular through hole of the outer conductor, one end of the first insulator, which is provided with a first annular groove, is connected with the second annular boss, and the other end of the first insulator is fixed on the outer conductor through the matching of the clamping piece and the joint piece; the contact pin is positioned in the cavity of the first insulator, one end of the first insulator, which is provided with the first annular boss, is connected with the second step, and the other end of the first insulator is connected with the third step;
the male connection section comprises a first shell, a second shell, a screw cap and a second insulator, wherein a jack is arranged on the end face of one end of the first shell, the central axis of the jack is superposed with the central axis of the first shell, a screw cap hole, a first round hole and a second round hole are sequentially arranged on the cylindrical surface of the first shell along the diameter direction, the central axes of the screw cap hole, the first round hole and the second round hole are all perpendicular to the central axis of the jack, and the first round hole is communicated with the jack; the cross section of the second shell is in a circular ring shape, the first shell is fixed in the second shell, the second insulator is fixed in the first circular hole, and the screw cap is fixed in the screw cap hole;
a sealing ring is arranged in the second annular groove, the outer conductor extends into the second round hole, one end provided with the second annular groove is fixed with the first shell, and the contact pin extends into the second round hole.
The cross section of the sealing ring is oval, and the sealing ring is made of silicon rubber.
The contact pin is made of lead brass, and a gold electroplating layer of 0.03um is coated on the surface of the contact pin.
The outer conductor, the first shell and the second shell are all made of lead brass, and the surfaces of the outer conductor, the first shell and the second shell are covered with 3um nickel electroplated layers.
The first insulator material is polytetrafluoroethylene.
The invention has the following beneficial effects: the radio frequency coaxial connector is simple in structure, the first insulator and the outer conductor in the radio frequency coaxial connector are effectively prevented from rotating relatively when the radio frequency coaxial connector receives impact through the matching of the clamping piece and the combining piece, the looseness is prevented, the impact resistance of the radio frequency coaxial connector is improved, and the reliability and the safety of connection between the first insulator and the outer conductor are guaranteed; the sealing ring is arranged at the matching part of the screw cap and the screw cap hole, so that the sealing property is ensured, and the influence of radio frequency leakage is eliminated; the gold plating on the surface of the contact pin ensures good signal communication in long-term use, and the nickel plating on the shell enhances the corrosion resistance of the radio frequency coaxial connector.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic diagram of a pin structure according to the present invention.
FIG. 3 is a schematic diagram of a first insulator structure according to the present invention.
Fig. 4 is a schematic diagram of the outer conductor structure of the present invention.
Fig. 5 is a schematic diagram of the structure of the card member of the present invention.
FIG. 6 is a schematic view of the structure of the joint according to the present invention.
FIG. 7 is a diagram of a first conductor structure according to the present invention.
In the figure: 1-female connection section, 2-male connection section, 3-pin, 4-first insulator, 5-outer conductor, 6-turnbuckle, 7-first step, 8-second step, 9-third step, 10-fourth step, 11-first annular groove, 12-first annular boss, 13-fastener, 14-disc, 15-fan-shaped projection, 16-mounting hole, 17-circular through hole, 18-second annular boss, 19-fastener, 20-fan-shaped hole, 21-first shoulder, 22-second shoulder, 23-third shoulder, 24-second annular groove, 25-sealing ring, 26-first shell, 27-second shell, 28-turnbuckle, 29-second insulator, 30-jack, 31-turnbuckle hole, 32-first round hole, 33-second round hole, 35-sealing ring.
Detailed description of the preferred embodiments
The invention is further described with reference to the following drawings and detailed description.
A radio frequency coaxial connector with strong impact resistance comprises a female head connecting section and a male head connecting section; the female connection section comprises a contact pin, a first insulator, an outer conductor and a threaded sleeve; the contact pin is a cylinder, one end of the contact pin is provided with a conical head, the conical angle is 50 degrees, and a first step, a second step, a third step and a fourth step are arranged on the contact pin;
the first insulator is of a cylindrical hollow structure, the upper end and the lower end of the first insulator are not blocked, a first annular groove is formed in one end face of the first insulator, the central axis of the first annular groove is overlapped with the central axis of the first insulator, a first annular boss and a clamping piece are sequentially arranged on the other end face of the first insulator along the radial direction with the diameter increased, the central axis of the clamping piece is overlapped with the central axis of the first insulator, the clamping piece comprises a disc and fan-shaped bulges, a mounting hole is formed in the center of the disc, a plurality of fan-shaped bulges are arranged outside the mounting hole of the disc, the fan-shaped bulges are annularly and uniformly distributed, and included angles between every two adjacent fan-shaped bulges are equal;
a circular through hole is formed in the outer conductor, the central axis of the circular through hole is overlapped with the central axis of the outer conductor, a second annular boss and a joint are arranged in the circular through hole, the joint is located below the second annular boss, the projection of the joint in the horizontal direction is annular, a plurality of fan-shaped holes are formed in the joint, the fan-shaped holes are annularly distributed around the central axis of the joint, and included angles between every two adjacent fan-shaped holes are equal; a first shaft shoulder, a second shaft shoulder and a third shaft shoulder are arranged on the cylindrical surface of the outer conductor, a second annular groove is arranged on one end face of the outer conductor, and the section of the second annular groove is trapezoidal;
the outer conductor is positioned in the screw sleeve, and a sealing ring is arranged at the third shaft shoulder; the first insulator is positioned in the circular through hole of the outer conductor, one end of the first insulator, which is provided with a first annular groove, is connected with the second annular boss, and the other end of the first insulator is fixed on the outer conductor through the matching of the clamping piece and the joint piece; the contact pin is positioned in the cavity of the first insulator, one end of the first insulator, which is provided with the first annular boss, is connected with the second step, and the other end of the first insulator is connected with the third step;
the male head connecting section comprises a first shell, a second shell, a screw cap and a second insulator, wherein a jack is arranged on the end face of one end of the first shell, the central axis of the jack is superposed with the central axis of the first shell, a screw cap hole, a first round hole and a second round hole are sequentially arranged on the cylindrical surface of the first shell along the diameter direction, the central axes of the screw cap hole, the first round hole and the second round hole are all perpendicular to the central axis of the jack, and the first round hole is communicated with the jack; the cross section of the second shell is in a circular ring shape, the first shell is fixed in the second shell, the second insulator is fixed in the first circular hole, and the screw cap is fixed in the screw cap hole;
a sealing ring is arranged in the second annular groove, the outer conductor extends into the second round hole, one end provided with the second annular groove is fixed with the first shell, and the contact pin extends into the second round hole.
The cross section of the sealing ring is oval, and the sealing ring is made of silicon rubber.
The contact pin is made of lead brass, and a gold electroplating layer of 0.03um is coated on the surface of the contact pin.
The outer conductor, the first shell and the second shell are all made of lead brass, and the surfaces of the outer conductor, the first shell and the second shell are covered with 3um nickel electroplated layers.
The first insulator material is polytetrafluoroethylene.
The radio frequency coaxial connector manufactured by adopting the structure has the following electrical properties:
1. the insulation resistance is more than or equal to 5000m omega;
2. the contact resistance of the inner conductor is less than or equal to 1 m omega, and the contact resistance of the outer conductor is less than or equal to 0.25 m omega;
3. the withstand voltage is more than or equal to 1000V.
During assembly, firstly, the cable is stripped according to the size of a stripped wire, the cable is inserted into the jack of the male head connecting section, and the second insulator is placed into the first round hole; then, assembling a first insulator and a contact pin in the outer conductor, and assembling a sealing ring and a sealing ring; and assembling the male connecting section and the female connecting section together, welding the cable core wire and the contact pin, and finally pressing the screw cap into the screw cap hole.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (3)
1. A radio frequency coaxial connector with strong impact resistance is characterized by comprising a female head connecting section and a male head connecting section, wherein the female head connecting section comprises a contact pin, a first insulator, an outer conductor and a threaded sleeve; the contact pin is a cylinder, one end of the contact pin is provided with a conical head, the conical angle is 50 degrees, and a first step, a second step, a third step and a fourth step are arranged on the contact pin;
the first insulator is of a cylindrical hollow structure, the upper end and the lower end of the first insulator are not blocked, a first annular groove is formed in one end face of the first insulator, the central axis of the first annular groove is overlapped with the central axis of the first insulator, a first annular boss and a clamping piece are sequentially arranged on the other end face of the first insulator along the radial direction with the diameter increased, the central axis of the clamping piece is overlapped with the central axis of the first insulator, the clamping piece comprises a disc and fan-shaped bulges, a mounting hole is formed in the center of the disc, a plurality of fan-shaped bulges are arranged outside the mounting hole of the disc, the fan-shaped bulges are annularly and uniformly distributed, and included angles between every two adjacent fan-shaped bulges are equal;
a circular through hole is formed in the outer conductor, the central axis of the circular through hole is overlapped with the central axis of the outer conductor, a second annular boss and a joint are arranged in the circular through hole, the joint is located below the second annular boss, the projection of the joint in the horizontal direction is annular, a plurality of fan-shaped holes are formed in the joint, the fan-shaped holes are annularly distributed around the central axis of the joint, and the included angles between every two adjacent fan-shaped holes are equal; a first shaft shoulder, a second shaft shoulder and a third shaft shoulder are arranged on the cylindrical surface of the outer conductor, a second annular groove is arranged on one end face of the outer conductor, and the section of the second annular groove is trapezoidal;
the outer conductor is positioned in the screw sleeve, and a sealing ring is arranged at the third shaft shoulder; the first insulator is positioned in the circular through hole of the outer conductor, one end of the first insulator, which is provided with a first annular groove, is connected with the second annular boss, and the other end of the first insulator is fixed on the outer conductor through the matching of the clamping piece and the joint piece; the contact pin is positioned in the cavity of the first insulator, one end of the first insulator, which is provided with the first annular boss, is connected with the second step, and the other end of the first insulator is connected with the third step;
the male head connecting section comprises a first shell, a second shell, a screw cap and a second insulator, wherein a jack is arranged on the end face of one end of the first shell, the central axis of the jack is superposed with the central axis of the first shell, a screw cap hole, a first round hole and a second round hole are sequentially arranged on the cylindrical surface of the first shell along the diameter direction, the central axes of the screw cap hole, the first round hole and the second round hole are all perpendicular to the central axis of the jack, and the first round hole is communicated with the jack; the cross section of the second shell is in a circular ring shape, the first shell is fixed in the second shell, the second insulator is fixed in the first circular hole, and the screw cap is fixed in the screw cap hole;
a sealing ring is arranged in the second annular groove, the outer conductor extends into the second round hole, one end provided with the second annular groove is fixed with the first shell, and the contact pin extends into the second round hole;
the cross section of the sealing ring is elliptical, and the sealing ring is made of silicon rubber;
the contact pin is made of lead brass, and a gold electroplating layer of 0.03um is coated on the surface of the contact pin.
2. The rf coaxial connector as claimed in claim 1, wherein the outer conductor, the first housing and the second housing are made of lead brass and have a 3um plated layer of nickel.
3. The rf coaxial connector of claim 1, wherein the first insulator material is ptfe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710547384.2A CN107221776B (en) | 2017-07-06 | 2017-07-06 | Radio frequency coaxial connector with strong impact resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710547384.2A CN107221776B (en) | 2017-07-06 | 2017-07-06 | Radio frequency coaxial connector with strong impact resistance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107221776A CN107221776A (en) | 2017-09-29 |
| CN107221776B true CN107221776B (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710547384.2A Active CN107221776B (en) | 2017-07-06 | 2017-07-06 | Radio frequency coaxial connector with strong impact resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107221776B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201498785U (en) * | 2009-08-10 | 2010-06-02 | 光红建圣股份有限公司 | Anti-rotation joint for shielded structure |
| CN204361442U (en) * | 2014-12-23 | 2015-05-27 | 湖北日海通讯技术有限公司 | Radio frequency (RF) coaxial connector |
-
2017
- 2017-07-06 CN CN201710547384.2A patent/CN107221776B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201498785U (en) * | 2009-08-10 | 2010-06-02 | 光红建圣股份有限公司 | Anti-rotation joint for shielded structure |
| CN204361442U (en) * | 2014-12-23 | 2015-05-27 | 湖北日海通讯技术有限公司 | Radio frequency (RF) coaxial connector |
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| Publication number | Publication date |
|---|---|
| CN107221776A (en) | 2017-09-29 |
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