CN111162419B - Radio frequency connector and radio frequency connection structure between two circuit boards - Google Patents
Radio frequency connector and radio frequency connection structure between two circuit boards Download PDFInfo
- Publication number
- CN111162419B CN111162419B CN201811323328.1A CN201811323328A CN111162419B CN 111162419 B CN111162419 B CN 111162419B CN 201811323328 A CN201811323328 A CN 201811323328A CN 111162419 B CN111162419 B CN 111162419B
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- conductor part
- outer conductor
- inner conductor
- radio frequency
- spring
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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
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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
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
-
- 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
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
Abstract
The invention provides a radio frequency connector and a radio frequency connection structure between two circuit boards, which comprises: the outer conductor comprises a first outer conductor part and a second outer conductor part which are connected in a sliding manner, dielectric bodies are arranged in the first outer conductor part and the second outer conductor part, protective sleeves are arranged on the outer surfaces of the first outer conductor part and the second outer conductor part, a first spring is limited between the two protective sleeves, and two ends of the outer conductor are respectively exposed out of the two protective sleeves; the inner conductor comprises a first inner conductor part and a second inner conductor part which are respectively arranged in two dielectric bodies in a sliding mode, wherein an inserting needle section is arranged at one end of the first inner conductor part, a sliding cavity is arranged in the second inner conductor part, a second spring is arranged in the sliding cavity, the first inner conductor part is in sliding fit with the second inner conductor part, the inserting needle section stretches into the second spring, and the second spring is arranged to be kept. The invention is easy to install and use, and has stable and reliable electrical performance.
Description
Technical Field
The present invention relates to the field of rf connector technology, and more particularly, to an rf connector and an rf connection structure between two circuit boards.
Background
Nowadays, with the development of communication technology, the requirements on the installation environment of the radio frequency connector are more and more strict, and the requirements on the installation density, the installation mode and the like of the radio frequency connector are also more and more high.
In the design of circuit board-to-circuit board or circuit board-to-module connections, due to manufacturing and assembly errors, the parts of the circuit board-to-circuit board that require insertion of the rf connector all have certain horizontal and vertical position tolerance, reflecting radial and axial tolerances on the rf connector. Most of the existing radio frequency coaxial connection technology which meets the requirements on radial and axial tolerance is of a three-body structure, so that the radio frequency coaxial connection technology is not convenient to install, the assembly process is complex, and the installation cost is high.
The existing circuit board-to-circuit board or circuit board-to-module connection mainly has the following technologies:
1) three-piece construction, socket-adapter-socket construction; the use of a three-piece construction can allow for relatively large radial tolerances. However, the three-piece structure requires welding sockets on the plates at the two ends, and additionally installing a coaxial connecting rod in the middle, so that the assembling steps are complicated, and the cost is high. And the radial tolerance of the structure is realized through the deflection angle of the connecting rods, when the distance between the circuit boards is larger, the connecting rods are longer, the deflection of the connecting rods at a small angle can cause a larger radial tolerance, and the radial tolerance is possibly not aligned in blind mating and butting, so that the practical use is influenced. Therefore, the installation adopting the scheme is not convenient enough, the installation efficiency is not high and the installation cost is higher.
2) Chinese patent CN 103392266B discloses a high frequency coaxial rf connector, which has a first and a second rf connector components, and is a two-body structure, which can achieve a larger tolerance, but needs to weld a central needle separately on the board, and the other end needs to be assembled once according to practical application, resulting in a higher assembly cost. When the installation density is higher, the condition of blind insertion and misalignment can also occur, damage is caused to the center pin, and the reliability of the product is influenced. And the structural characteristics determine that the frequency of use of the product is not very high.
Therefore, a radio frequency connector with high reliability, convenient installation and low installation cost is needed.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a radio frequency connector and a radio frequency connection structure between two circuit boards, which are used to solve the problem that the radio frequency connector in the prior art is not easy to be installed and used.
To achieve the above and other related objects, the present invention provides a radio frequency connector, comprising:
the outer conductor comprises a first outer conductor part and a second outer conductor part which are connected in a sliding manner, dielectric bodies are arranged in the first outer conductor part and the second outer conductor part, protective sleeves are arranged on the outer surfaces of the first outer conductor part and the second outer conductor part, a first spring is limited between the two protective sleeves, and two ends of the outer conductor are respectively exposed out of the two protective sleeves;
the inner conductor comprises a first inner conductor part and a second inner conductor part which are arranged in two dielectric bodies in a sliding mode respectively, wherein a pin section is arranged at one end of the first inner conductor part, a sliding cavity is formed in the second inner conductor part, a second spring is arranged in the sliding cavity, the first inner conductor part is in sliding fit with the second inner conductor part, the pin section stretches into the second spring, and the second spring is arranged to be kept and stretches out from two ends of the outer conductor respectively.
Preferably, the sliding contact sections of the first outer conductor part and the second outer conductor part are axially offset from the sliding fit sections of the first inner conductor part and the second inner conductor part.
Preferably, the two protective sleeves are respectively embedded in the first outer conductor part and the second outer conductor part.
Preferably, the first inner conductor part and the second inner conductor part are respectively provided with a step clamped with the dielectric body, when the dielectric body works, the first spring and the second spring are pressed, and the step on the first inner conductor part and the electric contact part of the first outer conductor part and the second outer conductor part are axially dislocated to form an electric compensation gap.
Preferably, the end of the sliding cavity of the second inner conductor part is provided with a closing part, and the first inner conductor part is limited in the sliding cavity of the second inner conductor part in a sliding manner.
Preferably, the electrical contact of the first outer conductor portion with the second outer conductor portion is formed by a slotted flare of an end of the first outer conductor portion.
Preferably, one end of the protective sleeve arranged outside the second outer conductor part is fixedly connected with the second outer conductor part, a guide channel is arranged between the other end of the protective sleeve and the second outer conductor part, and the end part of the first outer conductor part is positioned in the guide channel and slides in the guide channel.
The invention also provides a radio frequency connecting structure between the two circuit boards, which comprises a mounting cavity positioned between the two circuit boards, wherein the radio frequency connector is arranged in the mounting cavity, and the end parts of the outer conductor and the inner conductor are exposed and respectively contacted with the circuit boards.
Preferably, the protective sleeve is a plastic sleeve, and the protective sleeve is in clearance fit with the installation cavity.
Preferably, the outer diameter of the protective sleeve is larger than the outer diameter of the first spring.
As described above, the rf connector and the rf connection structure between two circuit boards of the present invention have the following advantages: the radio frequency connector enables the connection and installation mode of the circuit board to the cable board to be more efficient, convenient and low in cost, and batch automatic assembly is easy to realize; the circuit board is connected to the circuit board under the premise of realizing large tolerance, and stable and reliable electrical performance is guaranteed.
Drawings
Fig. 1 is a schematic diagram of an rf connector according to the present invention.
Fig. 2 is a schematic diagram of the outer conductor of the present invention.
Fig. 3 is a schematic diagram of the inner conductor of the present invention.
FIG. 4 is a schematic diagram of an RF connection between two circuit boards according to the present invention.
Description of the element reference
1 protective sleeve
11 mating part
2 dielectric body
3 second inner conductor part
4 second spring
5 first inner conductor part
51 pin segment
52 second step section
53 first step
6 first spring
7 second outer conductor part
701 middle section cavity
702 at one end thereof
703 cavity at the other end
8 first outer conductor part
81 electric contact
9 mounting cavity
10 circuit board
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 4. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are used for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms may be changed or adjusted without substantial change in the technical content.
As shown in fig. 1, the present invention provides a radio frequency connector, comprising:
the outer conductor, as shown in fig. 2, includes a first outer conductor portion 8 and a second outer conductor portion 7 which are connected in a sliding manner, the first outer conductor portion 8 and the second outer conductor portion 7 are both provided with a dielectric body 2, the outer surfaces of the first outer conductor portion 8 and the second outer conductor portion 7 are both provided with protective sleeves 1, a first spring 6 is limited between the two protective sleeves 1, and two ends of the outer conductor are respectively exposed out of the two protective sleeves 1;
the inner conductor comprises a first inner conductor part 5 and a second inner conductor part 3 which are respectively arranged in two dielectric bodies in a sliding mode, wherein one end of the first inner conductor part 5 is provided with a pin section 51, as shown in fig. 3, the second inner conductor part 3 is provided with a sliding cavity 301, a second spring 4 is arranged in the sliding cavity 301, the first inner conductor part 5 is in sliding fit with the second conductor part 3, the pin section 51 extends into the second spring 4, and the second spring 4 is arranged to keep the first inner conductor part 5 and the second inner conductor part 3 respectively extend out of two ends of the outer conductor.
According to the invention, the first outer conductor part 8 and the second outer conductor part 7 are adopted, the first inner conductor part 5 and the second inner conductor part 3 are in sliding fit, and the axial sliding stroke of the first outer conductor part and the second inner conductor part is kept by the springs, and the first inner conductor part 5 and the second inner conductor part 3 are respectively provided with contact parts exposed at two ends of the outer conductor under the action of the second spring 4, so that the mounting and the use are convenient, and welding is not needed; and first inner conductor portion 5 and second inner conductor portion 3 adopt contact pin formula sliding construction, and contact pin section 51 plays the guide effect to second spring 4, and the distortion when preventing second spring 4 deformation plays better electrical stability.
In the radio frequency connector, the first inner conductor part 5 and the second inner conductor part 3 are respectively in clearance fit with the two dielectric bodies 2 to realize the sliding of the inner conductors, as shown in fig. 1, in this embodiment, the sliding contact sections of the first outer conductor part 7 and the second outer conductor part 8 (also referred to as the electrical contact positions of the first outer conductor part 7 and the second outer conductor part 8) and the sliding fit sections of the first inner conductor part 5 and the second inner conductor part 3 (also referred to as the electrical contact positions of the first inner conductor part 5 and the second inner conductor part 3) are axially displaced. Namely, the electrical contact position of the first outer conductor part 7 and the second outer conductor part 8 and the electrical contact position of the first inner conductor part 5 and the second inner conductor part 3 are axially staggered, so that the impedance in the whole electrical channel is uniform when the electrical channel is axially compressed at different heights, and the electrical stability is improved.
As shown in fig. 2, in this embodiment, the inner cavity of the second outer conductor portion 7 is a stepped cavity, and the inner diameter of the middle-section cavity 701 is smaller than the inner diameters of the cavities at both ends, as shown in fig. 1, the sliding fit section of the first inner conductor portion 5 and the second inner conductor portion 3 is located in the cavity 702 at one end, and the electrical contact 81 of the first outer conductor portion 8 is slidably located in the cavity 703 at the other end. The first inner conductor part 5 is a stepped rod-shaped member, as shown in fig. 3, and includes a first step section 53, a second step section 52 and a pin 51, wherein a step portion where the first step section 53 and the second step section 52 are connected is clamped on the dielectric body 2, so as to prevent the first inner conductor part 5 from being removed from the dielectric body 2. In use, i.e. the first spring 6 and the second spring 4 are compressed, the step on the first inner conductor part 5 is axially offset from the electrical contact between the first outer conductor part 8 and the second outer conductor part 7, forming an electrical compensation gap. Through the design of the stepped cavity and the stepped rod-shaped piece, the stepped cavity and the steps of the rod-shaped piece can be positioned in the same radial direction, and the characteristic impedance of each section of the outer conductor and the inner conductor is the characteristic impedance required by design. The electrical contact points of the first outer conductor part 8 and the second outer conductor part 7 and the electrical contact points of the first inner conductor part 5 and the second inner conductor part 3 are in different stepped cavities, and when different axial compression is generated, the impedance of the whole electrical channel can be ensured to be uniform, so that the connector can achieve stable and reliable electrical performance in a large tolerance range.
The inner conductor and/or the outer conductor in this embodiment may be a resilient member. The electrical contact 81 of the first outer conductor portion 8 with the second outer conductor portion 7 is formed by notching and flaring the end of the first outer conductor portion 8. A radial gap is formed at the sliding fit position of the first outer conductor part 8 and the second outer conductor part 7, namely the outer diameter of the first outer conductor part 8 is slightly smaller than the inner diameter of the cavity 703 at the other end of the second outer conductor part, so that the first outer conductor part can be inclined at a certain angle to meet certain radial tolerance, and meanwhile, certain radial tolerance is further allowed through the design of the circuit board; in addition, the first outer conductor part 8 and the second outer conductor part 7 are axially limited through the snap fit, and the radio frequency connector is integrated and not easy to be scattered on the premise of realizing certain axial tolerance.
The end of the sliding cavity of the second inner conductor part 3 has a notch, and the first inner conductor part 5 is slidably limited in the sliding cavity 31 of the second inner conductor part 3. The pin section 51 projects into the sliding chamber 31 and likewise leaves sufficient space in the axial direction to ensure reliable contact of the inner and outer conductors with large axial tolerances. The pin segment 51 and the sliding cavity 31 may be respectively disposed on the second inner conductor part 3 and the first inner conductor part 5 as required, i.e. they are not limited to the structural design as in fig. 1, and their structures may be reversed. In addition, the pin segment 51 may be inserted into the second spring 4, and may also be fixedly connected to the second spring 4.
In this embodiment, two protective sheath 1 inlays respectively and establishes first outer conductor portion 8 with on the outer conductor portion 7 of second, be convenient for fix a position fixed protective sheath 1 like this, protective sheath 1's external diameter is great, can avoid the contact of first spring 6 with the chamber wall of installation cavity. The protective sheath is the plastic sheath in this embodiment, avoids its chamber wall with the installation cavity to send friction noise, also further completely cuts off the contact of radio frequency connector and installation cavity, improves electrical stability.
More preferably, one end of the protective sleeve 1 disposed outside the second outer conductor portion 7 is fixedly connected to the second outer conductor portion 7, a guide channel is disposed between the other end of the protective sleeve 1 and the second outer conductor portion 7, and an end of the first outer conductor portion 8 is located in the guide channel and slides in the guide channel, i.e., the protective sleeve 1 can guide the sliding of the first outer conductor portion 8. In addition, the first outer conductor part 8 is in clearance fit with the protective sleeve 1, so that the radio frequency connector has larger radial tolerance.
The invention also provides a radio frequency connection structure between two circuit boards, as shown in fig. 4, which includes a mounting cavity 9 located between two circuit boards 10, the radio frequency connector is placed in the mounting cavity 9, and the ends of the outer conductor and the inner conductor are exposed and respectively contacted with the circuit boards 10. In this embodiment, the radio frequency connector is directly placed in the mounting cavity 9, and the two circuit boards 10 are axially pressed to electrically connect the two circuit boards.
When the two circuit boards 10 are pressed, the contact portions on the first inner conductor portion 5 and the second inner conductor portion 3 (i.e. the end portions of the first inner conductor portion 5 and the second inner conductor portion 3 exposed outside the outer conductor) can ensure that the inner conductor contacts the circuit board 10 first, and along with the axial pressing of the circuit board 10 for a certain distance (i.e. the distance that the contact portions are higher than the outer conductor), in this process, as shown in fig. 4, the pressure given to the first inner conductor portion 5 by the circuit board 10 on the left side can be applied to the first inner conductor portion 5 along with the first inner conductor portion 5 and the second spring 4, the first inner conductor portion 5 abuts against the circuit board 10 on the right side, and at this time, the inner conductors of the two circuit boards 10 are communicated, and since the first inner conductor portion 5 and the second inner conductor portion 3 are in clearance fit with the corresponding dielectric bodies 2, the positive pressure contact between the first inner conductor portion 5 and the second inner conductor portion 3 and the two circuit boards 10 is equal, And is equal to the difference between the elastic force of the second spring 4 and the frictional force between the first inner conductor part 5 and the second inner conductor part 3.
As the left circuit board 10 continues to move, the outer conductor on the left circuit board 10 contacts the end face of the first outer conductor part 8, and then continues to move, pressure is applied to the first outer conductor part 8, the second outer conductor part 7 is applied to the second outer conductor part 7 along the first spring 6, the second outer conductor part 7 and the outer conductor on the right circuit board 10 are pressed, and at the same time, the outer conductors of the left and right circuit boards 10 are also communicated. The left side circuit board 10 can be pressed to the right again by a distance which is the axial tolerance range of the rf connector, and the more right the two springs (i.e. the first spring 6 and the second spring 4) are pressed, the more reliable the contact with the circuit board 10 is.
In this embodiment, the cavity wall of the installation cavity 9 is made of a metal material, and the outer diameter of the protection sleeve 1 is larger than the outer diameter of the first spring 6, so that friction between the first spring 6 and the cavity wall of the installation cavity 9 during installation or use is avoided.
In summary, the rf connector and the rf connection structure between two circuit boards of the present invention are convenient for installation and use, and have a larger radial tolerance when the circuit boards are connected to each other, so as to ensure a higher electrical stability. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A radio frequency connector, comprising:
the outer conductor comprises a first outer conductor part and a second outer conductor part which are connected in a sliding manner, dielectric bodies are arranged in the first outer conductor part and the second outer conductor part, protective sleeves are arranged on the outer surfaces of the first outer conductor part and the second outer conductor part, a first spring is limited between the two protective sleeves, and two ends of the outer conductor are respectively exposed out of the two protective sleeves; the protective sleeve can guide the sliding of the first outer conductor part;
the inner conductor comprises a first inner conductor part and a second inner conductor part which are respectively arranged in the two dielectric bodies in a sliding mode, one end of the first inner conductor part is provided with a pin inserting section, the second inner conductor part is provided with a sliding cavity, a second spring is arranged in the sliding cavity, the first inner conductor part is in sliding fit with the second inner conductor part, the pin inserting section extends into the second spring, and the second spring is arranged to keep the first inner conductor part and the second inner conductor part to respectively extend out of two ends of the outer conductor; the contact pin section plays the guide effect to the second spring, and the distortion when preventing the second spring deformation.
2. The radio frequency connector of claim 1, wherein: the sliding contact sections of the first outer conductor part and the second outer conductor part and the sliding fit sections of the first inner conductor part and the second inner conductor part are staggered in the axial direction.
3. The radio frequency connector of claim 1, wherein: the two protective sleeves are respectively embedded on the first outer conductor part and the second outer conductor part.
4. The radio frequency connector of claim 1, wherein: the first inner conductor part and the second inner conductor part are respectively provided with a step clamped with the dielectric body, when the dielectric body works, the first spring and the second spring are pressed, and the step on the first inner conductor part is axially dislocated with the electric contact part of the first outer conductor part and the second outer conductor part to form an electric compensation gap.
5. The radio frequency connector of claim 1, wherein: the end part of the sliding cavity of the second inner conductor part is provided with a closing part, and the first inner conductor part is limited in the sliding cavity of the second inner conductor part in a sliding mode.
6. The radio frequency connector of claim 1, wherein: the electrical contact of the first outer conductor portion with the second outer conductor portion is formed by a slotted flare of the end of the first outer conductor portion.
7. The radio frequency connector of claim 1, wherein: and one end of the protective sleeve arranged outside the second outer conductor part is fixedly connected with the second outer conductor part, a guide channel is arranged between the other end of the protective sleeve and the second outer conductor part, and the end part of the first outer conductor part is positioned in the guide channel and slides in the guide channel.
8. A radio frequency connection structure between two circuit boards is characterized in that: comprising a mounting cavity between two circuit boards, wherein the radio frequency connector of any one of claims 1 to 7 is arranged in the mounting cavity, and the ends of the outer conductor and the inner conductor are exposed and respectively contacted with the circuit boards.
9. The rf connection structure between two circuit boards of claim 8, wherein: the protective sheath is the plastic sheath, the protective sheath with installation cavity clearance fit.
10. The rf connection structure between two circuit boards according to claim 8, wherein: the outer diameter of the protective sleeve is larger than the outer diameter of the first spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811323328.1A CN111162419B (en) | 2018-11-08 | 2018-11-08 | Radio frequency connector and radio frequency connection structure between two circuit boards |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811323328.1A CN111162419B (en) | 2018-11-08 | 2018-11-08 | Radio frequency connector and radio frequency connection structure between two circuit boards |
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| Publication Number | Publication Date |
|---|---|
| CN111162419A CN111162419A (en) | 2020-05-15 |
| CN111162419B true CN111162419B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811323328.1A Active CN111162419B (en) | 2018-11-08 | 2018-11-08 | Radio frequency connector and radio frequency connection structure between two circuit boards |
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| CN (1) | CN111162419B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022182610A1 (en) * | 2021-02-24 | 2022-09-01 | Smiths Interconnect Americas, Inc. | Systems and methods for coaxial board to board connections |
| CN113922118B (en) * | 2021-12-13 | 2022-05-03 | 南京天朗防务科技有限公司 | Radio frequency connector |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111162419A (en) | 2020-05-15 |
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