CN111029812A - Coaxial radio frequency board is to board connector - Google Patents

Coaxial radio frequency board is to board connector Download PDF

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Publication number
CN111029812A
CN111029812A CN201911199572.6A CN201911199572A CN111029812A CN 111029812 A CN111029812 A CN 111029812A CN 201911199572 A CN201911199572 A CN 201911199572A CN 111029812 A CN111029812 A CN 111029812A
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CN
China
Prior art keywords
cup
outer conductor
conductor
buckling
cup body
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Granted
Application number
CN201911199572.6A
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Chinese (zh)
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CN111029812B (en
Inventor
杨胜权
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Shinto Electronics Technology Co ltd
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Shinto Electronics Technology Co ltd
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Priority to CN201911199572.6A priority Critical patent/CN111029812B/en
Publication of CN111029812A publication Critical patent/CN111029812A/en
Application granted granted Critical
Publication of CN111029812B publication Critical patent/CN111029812B/en
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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
    • H01R24/50—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 mounted on a PCB [Printed Circuit Board]
    • 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
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/52—Fixed connections for rigid printed circuits or like structures connecting to other rigid printed 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
    • 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
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
    • 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
    • H01R13/2435—Contacts for co-operating by abutting resilient; resiliently-mounted with opposite contact points, e.g. C beam
    • 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
    • H01R13/502—Bases; Cases composed of different pieces
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
    • H01R13/6315—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only allowing relative movement between coupling parts, e.g. floating connection
    • 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
    • H01R24/54—Intermediate parts, e.g. adapters, splitters or elbows

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

A coaxial radio frequency board to board connector characterized by: the design has an upper button cup to the top circuit board, has a lower button cup to the bottom circuit board design, and upper button cup are the cup structure, two interfaces about as, wherein are equipped with annular positioning groove on the lower button cup. Then, an inner conductor and outer conductor assembly is designed between the upper buckling cup and the lower buckling cup, the inner conductor and outer conductor assembly consists of an outer conductor, an inner conductor and an insulator, the outer conductor is in a tubular shape, an upper lug is arranged at the upper end of the outer conductor, a lower lug is arranged at the lower end of the outer conductor, the inner conductor is an elastic pin, and the insulator is used as an insulating support between the inner conductor and the outer conductor. In a use state, the lower parts of the inner conductor assembly and the outer conductor assembly are in butt joint with the lower buckling cup, the lower lug is clamped in the annular positioning groove, the upper parts of the inner conductor assembly and the outer conductor assembly are in butt joint with the upper buckling cup, and the upper lug is positioned in the upper buckling cup in a floating mode, so that connection is achieved. The scheme solves the problems of complex structure and high cost of the existing coaxial radio frequency board-to-board connector.

Description

Coaxial radio frequency board is to board connector
Technical Field
The invention belongs to the field of electrical connectors, and particularly relates to a coaxial radio frequency board-to-board connector. The connector is suitable for transmitting radio frequency signals between two circuit boards which are parallel up and down.
Background
With the development of various high and new technologies and the change of electronic products changing day by day, people can obviously see that the electronic products are more and more precise, and because the use space of a board-to-board connector is reduced, the board-to-board connector is widely applied, and especially, the precision electronic equipment such as a smart phone and the like which is used at present can be used for the board-to-board connector.
The application of the board-to-board connector determines its form. There is a special application form, namely, the requirement of transmitting radio frequency signals between an upper circuit board and a lower circuit board which are parallel. In the past, jumper connection methods are generally adopted to solve the problems. With the technological progress, board-to-board rf connectors have emerged, which are applied between two parallel circuit boards, one above the other, in order to save space and at the same time improve the reliability of the rf connection.
US2012/0295478a1, 11/22 of 2012, discloses an invention patent application entitled circuit board coaxial connector (circuit board coaxial connector). This application provides a board-to-board connector capable of coaxially transmitting radio frequency signals between two parallel circuit boards, upper and lower. Although the reliability and adaptability problems in practical application are fully considered from the design point of view, the board-to-board connector is difficult to popularize and apply on a large scale in various occasions due to the fact that the structure of parts is too complex and the manufacturing cost is high.
In view of the above, it is an object of the present invention to design a connector product that can satisfy the requirements of reliability and adaptability, and that has a relatively simple connector structure and low cost.
Disclosure of Invention
The invention provides a board-to-board connector, and aims to solve the problems of complex structure and high cost of the conventional coaxial radio frequency board-to-board connector.
In order to achieve the purpose, the invention adopts the technical scheme that: a coaxial radio frequency board to board connector is characterized in that: by detaining the cup on, detain the cup down and interior outer conductor assembly constitutes, wherein:
the main body of the upper buckling cup is of a first cup body structure, a first through hole penetrating through the main body is formed in the bottom of the first cup body, the bottom surface of the first cup body is a first contact surface, the inner wall surface of the first cup body is a first inner cambered surface or a first inner conical surface, at least two first open grooves are formed in the inner wall of the first cup body and penetrate through the wall thickness and the top of the first cup body, and all the first open grooves are uniformly distributed in the circumferential direction of the first cup body.
The main body of the lower buckling cup is of a second cup body structure, a penetrating second through hole is formed in the bottom of the second cup body, the bottom surface of the second cup body is a second contact surface, the inner wall surface of the second cup body is a second inner conical surface or a second inner arc surface, at least two second open grooves are formed in the inner wall of the second cup body and penetrate through the wall thickness and the top of the second cup body, all the second open grooves are evenly distributed in the circumferential direction of the second cup body, an annular positioning groove is formed in the bottom of the second inner conical surface or the second inner arc surface, and the diameter of the bottom of the annular positioning groove is larger than that of the bottom of the second inner conical surface or the second inner arc surface.
The inner conductor assembly and the outer conductor assembly are composed of an outer conductor, an inner conductor and an insulator, wherein the main body of the outer conductor is a tubular body, an upper lug protruding outwards is arranged on the outer side of the upper end of the tubular body, and a lower lug protruding outwards is arranged on the outer side of the lower end of the tubular body; the inner conductor consists of an upper needle head, a lower needle head, a needle tube and a spring, wherein the upper needle head and the lower needle head are respectively formed by fixedly connecting or integrally connecting a contact head and a sliding body, the sliding body of the upper needle head is positioned in a tube hole at the upper end of the needle tube and is in sliding fit with the tube hole, the contact head of the upper needle head extends out from the upper end of the needle tube, the lower needle head is positioned in a tube hole at the lower end of the needle tube and is in sliding fit with the tube hole, the contact head of the lower needle head extends out from the lower end of the needle tube, and the spring is positioned in the needle tube and is pressed between the upper needle; the inner conductor is positioned in the outer conductor, the upper needle head in the inner conductor is positioned at the upper end of the tubular body of the outer conductor, the lower needle head in the inner conductor is positioned at the lower end of the tubular body of the outer conductor, the inner conductor and the outer conductor are provided with an annular isolation space, and the annular isolation space is filled with an insulator for supporting the inner conductor and the outer conductor.
Under the assembled state, the cup body opening of the upper buckling cup faces downwards, the cup body opening of the lower buckling cup faces upwards, the top of the inner conductor and the top of the outer conductor assembly are located in the cup body of the upper buckling cup, the upper lug of the outer conductor is in contact with the first inner conical surface or the first inner arc surface of the upper buckling cup, the upper needle head contact head of the inner conductor extends out of the first through hole of the upper buckling cup, the bottom of the inner conductor and the bottom of the outer conductor assembly are located in the cup body of the lower buckling cup, the lower lug of the outer conductor is located in the annular locating groove of the lower buckling cup, and the lower needle head (16) contact head of the inner conductor extends out of the second through hole of the lower buckling cup.
The relevant content in the above technical solution is explained as follows:
1. in the above scheme, the first open groove is formed along the axial direction of the first cup body; the second open groove is formed along the axial direction of the second cup body.
2. In the above scheme, the first contact surface and the second contact surface are both flat surfaces.
3. In the above scheme, the second open groove is formed from the top of the second cup body to the annular positioning groove along the axial direction.
4. In the scheme, the shape and the size of the upper lug are matched with the shape and the size of the bottom of the first inner conical surface or the first inner cambered surface of the upper buckling cup; the shape and the size of the lower lug are matched with the shape and the size of the annular positioning groove of the lower buckle cup.
The design principle of the invention is as follows: in order to solve the problems of complex structure and high cost of the conventional coaxial radio frequency board-to-board connector, the invention designs an upper buckling cup for a top circuit board and a lower buckling cup for a bottom circuit board. The upper buckling cup and the upper buckling cup are both of cup body structures and serve as an upper connector and a lower connector, and the lower buckling cup is provided with an annular positioning groove. Then, an inner conductor and outer conductor assembly is designed between the upper buckling cup and the lower buckling cup, the inner conductor and outer conductor assembly consists of an outer conductor, an inner conductor and an insulator, the outer conductor is in a tubular shape, an upper lug is arranged at the upper end of the outer conductor, a lower lug is arranged at the lower end of the outer conductor, the inner conductor is an elastic pin, and the insulator is used as an insulating support between the inner conductor and the outer conductor. In a use state, the lower parts of the inner conductor assembly and the outer conductor assembly are in butt joint with the lower buckling cup, the lower lug is clamped in the annular positioning groove, the upper parts of the inner conductor assembly and the outer conductor assembly are in butt joint with the upper buckling cup, and the upper lug is positioned in the upper buckling cup in a floating mode, so that connection is achieved. In the connected state, the upper buckling cup, the outer conductor and the lower buckling cup form an outer conductor electric connection path between the two circuit boards, and the inner conductor forms an inner conductor electric connection path between the two circuit boards independently.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages and effects:
1. the cup is mainly formed by combining a cup and a tube structure, and compared with the existing comparison patent (US 2012/0295478A 1), the cup is greatly simplified in part structure or integral structure, and the corresponding manufacturing cost can be greatly reduced.
2. The invention simplifies the structural design of the connector, but does not sacrifice the proper function and performance of the connector.
3. The upper buckling cup and the lower buckling cup are both cup body structures, so the requirement on installation and alignment of the upper buckling cup and the lower buckling cup is low, and the installation and the use are facilitated.
4. The invention has better height tolerance absorption capacity (see figure 11) and inclination tolerance absorption capacity (see figure 12) due to the adoption of the structure design that the cup body with the elastic opening is matched with the lug.
Drawings
FIG. 1 is a perspective view of an embodiment of the present invention;
FIG. 2 is a sectional view of an embodiment of the present invention in use;
FIG. 3 is a cross-sectional view of a snap-on cup in accordance with an embodiment of the present invention;
FIG. 4 is a perspective view of a snap-on cup in accordance with an embodiment of the present invention;
FIG. 5 is a cross-sectional view of an inner and outer conductor assembly according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a lower snap cup in accordance with an embodiment of the present invention;
FIG. 7 is a perspective view of a lower clasp cup in accordance with an embodiment of the present invention;
FIG. 8 is a state diagram of the assembly process of the embodiment of the present invention;
FIG. 9 is a state diagram of the assembly process of the embodiment of the present invention;
FIG. 10 is a state diagram of the assembly process of the embodiment of the present invention;
FIG. 11 is a high tolerance absorption schematic of an embodiment of the present invention;
FIG. 12 is a schematic diagram of tilt tolerance absorption according to an embodiment of the present invention.
In the above drawings: 1. buckling a cup; 2. a cup is buckled; 3. a first through hole; 4. a first contact surface; 5. a first inner conical surface; 6. a first open channel; 7. a second through hole; 8. a second contact surface; 9. a second inner conical surface; 10. a second open channel; 11. an annular positioning groove; 12. an outer conductor; 13. an insulator; 14. an inner conductor; 15. a needle head is arranged; 16. a needle head is arranged; 17. a needle tube; 18. a spring; 19. an upper lug; 20. a lower lug; 21. a top circuit board; 22. a bottom circuit board; A. a height tolerance; B. the tolerance of tilt.
Detailed Description
The invention is further described with reference to the following figures and examples:
example (b): coaxial radio frequency board is to board connector
As shown in fig. 1-7, the connector is composed of a snap-on cup 1, a snap-off cup 2, and an inner and outer conductor assembly (see fig. 1 and 2), wherein:
the main body of the upper buckling cup 1 is of a first cup body structure (see fig. 3), and a first through hole 3 (see fig. 3 and 4) penetrating through the bottom of the first cup body is formed. The bottom surface of the first cup is a first contact surface 4 (see fig. 3 and 4), and the first contact surface 4 is a flat surface. The inner wall surface of the first cup is a first inner conical surface 5 (see fig. 3). Six first open grooves 6 (see fig. 4) are formed in the inner wall of the first cup body, the first open grooves 6 penetrate through the wall thickness and the top of the first cup body, all the first open grooves 6 are uniformly distributed in the circumferential direction of the first cup body, and the first open grooves 6 are formed in the axial direction of the first cup body.
The main body of the lower buckling cup 2 is a second cup body structure (see fig. 6), and a second through hole 7 (see fig. 6) penetrating through the bottom of the second cup body is arranged. The bottom surface of the second cup body is a second contact surface 8 (see fig. 6), and the second contact surfaces 8 are all flat surfaces. The inner wall surface of the second cup is a second inner conical surface 9 (see fig. 6 and 7). Six second open grooves 10 (see fig. 6 and 7) are formed in the inner wall of the second cup body, the second open grooves 10 penetrate through the wall thickness and the top of the second cup body, all the second open grooves 10 are uniformly distributed in the circumferential direction of the second cup body, and the second open grooves 10 are formed in the axial direction of the second cup body. The bottom of the second inner conical surface 9 is provided with a ring-shaped positioning groove 11 (see fig. 6), and the diameter of the groove bottom of the ring-shaped positioning groove 11 is larger than that of the bottom of the second inner conical surface 9. The second open groove 10 is formed from the top of the second cup body to the annular positioning groove 11 along the axial direction.
The inner and outer conductor assembly is composed of an outer conductor 12, an inner conductor 14 and an insulator 13 (see fig. 2 and 5), wherein the main body of the outer conductor 12 is a tubular body, an upper lug 19 (see fig. 5) protruding outwards is arranged on the outer side of the upper end of the tubular body, and a lower lug 20 (see fig. 5) protruding outwards is arranged on the outer side of the lower end of the tubular body. The inner conductor 14 is composed of an upper needle 15, a lower needle 16, a needle tube 17, and a spring 18 (see fig. 5). The upper needle head 15 and the lower needle head 16 are both formed by fixedly connecting or integrally connecting two parts of a contact head and a sliding body. The sliding body of the upper needle head 15 is positioned in the upper end tube hole of the needle tube 17 and is in sliding fit with the tube hole, the contact head of the upper needle head 15 extends out from the upper end of the needle tube 17, the lower needle head 16 is positioned in the lower end tube hole of the needle tube 17 and is in sliding fit with the tube hole, and the contact head of the lower needle head 16 extends out from the lower end of the needle tube 17. The spring 18 is located within the needle tube 17 and is compressed between the upper needle 15 and the lower needle 16 (see fig. 5). The inner conductor 14 is located inside the outer conductor 12, the upper spike 15 of the inner conductor 14 is located at the upper end of the tubular body of the outer conductor 12, the lower spike 16 of the inner conductor 14 is located at the lower end of the tubular body of the outer conductor 12, and the inner conductor 14 and the outer conductor 12 are provided with an annular isolation space which is filled with an insulator 13 for supporting the inner conductor 14 and the outer conductor 12 (see fig. 5).
In the assembled state (see fig. 2), the cup opening of the upper buckling cup 1 faces downwards, the cup opening of the lower buckling cup 2 faces upwards, the top of the inner and outer conductor assembly is positioned in the cup of the upper buckling cup 1, the upper lug 19 of the outer conductor 12 is in contact with the first inner conical surface 5 of the upper buckling cup 1, the contact of the upper needle 15 of the inner conductor 14 extends out of the first through hole 3 of the upper buckling cup 1, the bottom of the inner and outer conductor assembly is positioned in the cup of the lower buckling cup 2, the lower lug 20 of the outer conductor 12 is positioned in the annular positioning groove 11 of the lower buckling cup 2, and the contact of the lower needle 16 of the inner conductor 14 extends out of the second through hole 7 of the lower buckling cup 2. The shape and size of the upper lug 19 are matched with the shape and size of the bottom of the first inner conical surface 5 of the upper buckling cup 1. The lower lug 20 has a shape and size matching the shape and size of the annular locating groove 11 of the lower snap cup 2.
The assembly and use process of the connector of the embodiment is described as follows:
1. fixed upper button cup 1 and lower button cup 2
Referring to fig. 8, the upper snap cup 1 is fixed to the top circuit board 21 and the lower snap cup 2 is fixed to the bottom circuit board 22 by soldering or the like.
2. Inserting the inner and outer conductor assemblies into the lower snap cup 2
Referring to fig. 9, when the lower lug 20 of the outer conductor 12 of the inner and outer conductor assemblies is inserted into the lower snap cup 2, the cup (slotted piece) of the lower snap cup 2 is slightly opened outwards due to the slotted structure (second open slot 10) of the lower snap cup 2, so that the lower lug 20 of the outer conductor 12 can be smoothly inserted into the annular positioning slot 11 of the lower snap cup 2, and then the cup (slotted piece) of the lower snap cup 2 rebounds to the original position to lock the outer conductor 12 of the inner and outer conductor assemblies, and at this time, the lower needle 16 of the inner conductor 14 of the inner and outer conductor assemblies is tightly pressed on the electrode of the bottom circuit board 22 through the contraction of the spring 18 to form an electrical connection.
3. Assembling the top circuit board 21
Referring to fig. 9, aligning the top circuit board 21 and the bottom circuit board 22 with the upper snap cup 1 fixed thereon, and then vertically pushing in, because the cup body of the upper snap cup 1 is a slotted structure (first open slot 6), when the upper lug 19 of the outer conductor 12 on the inner and outer conductor assemblies is inserted into the upper snap cup 1, the cup body (slotted sheet) of the upper snap cup 1 is slightly opened outwards, so that the upper lug 19 on the outer conductor 12 of the inner and outer conductor assemblies can be smoothly inserted into the upper snap cup 1, and then the cup body (slotted sheet) of the upper snap cup 1 rebounds to the original position, locking the outer conductor 12 of the inner and outer conductor assemblies, at this time, the upper pin 15 of the inner conductor 14 of the inner and outer conductor assemblies is tightly pressed on the electrode of the top circuit board 21 through the contraction of the spring 18, forming an electrical connection.
4. Separating the top circuit board 21 from the bottom circuit board 22
When the top circuit board 21 and the bottom circuit board 22 are separated, because the lower fastening cup 2 on the bottom circuit board 22 is provided with the annular positioning groove 11 structure, the annular positioning groove 11 and the lower lug 20 of the outer conductor 12 on the inner and outer conductor assembly have certain holding power, when the upper and lower circuit boards are separated, the inner and outer conductor assembly can be fixed on the bottom circuit board 22, and the two circuit boards can be conveniently combined again.
The principle of the connector of the present embodiment to absorb the height tolerance and the tilt tolerance is explained as follows:
1.1 height tolerance A
The distance (gap) between two parallel boards inevitably has a certain inconsistency, which we call the height tolerance a of the assembly. The connector of the invention can absorb a certain height tolerance A, so that the connection performance is ensured.
1.2 absorption with a high tolerance A
Referring to fig. 11, the outer conductor 12 of the connector of the present invention can slide on the slotted plate of the upper retaining cup 1 and maintain good contact. The inner conductor 14 of the connector can be extended upwards by the resilience of the inner spring 18, and good contact performance can be maintained. This sliding and spring 18 rebound to take up a certain amount of height tolerance a.
2.1 Tilt tolerance B
There is a certain deviation in the horizontal position between the two parallel boards, which causes a certain tilt during the assembly of the connector, which is called the tilt tolerance B of the assembly.
2.3 absorption of Tilt tolerance B
Referring to fig. 12, the connector can absorb a certain inclination tolerance B of an angle and maintain a good contact performance by the elasticity of the slotted plates of the upper snap cup 1 and the lower snap cup 2.
Other embodiments and structural variations of the present invention are described below:
1. in the above embodiment, the inner wall surface of the first cup body is the first inner conical surface 5, and the inner wall surface of the second cup body is the second inner conical surface 9. However, the present invention is not limited thereto and the first inner tapered surface 5 may be changed to a first inner curved surface and the second inner tapered surface 9 may be changed to a second inner curved surface. Such modifications may achieve the same technical result, as is readily understood and accepted by those skilled in the art.
2. In the above embodiment, six first open grooves 6 are formed on the inner wall of the first cup, and six second open grooves 10 are formed on the inner wall of the second cup. However, the present invention is not limited thereto, and it is assumed that the number of the first open grooves 6 and the second open grooves 10 is at least two, and six is only the best practice. As would be readily understood and accepted by those skilled in the art.
3. In the above embodiment, the first open groove 6 is formed along the axial direction of the first cup, and the second open groove 10 is formed along the axial direction of the second cup. However, the present invention is not limited thereto, and the specific way of forming the first open groove 6 and the second open groove 10, the shape of the groove cross section, and the like may be varied, for example, forming inclined grooves, for example, the groove cross section is not rectangular but trapezoidal, and the like. In general, the purpose of the slots is to allow the cup to achieve elastic expansion and contraction, as will be readily understood and accepted by those skilled in the art.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (5)

1. A coaxial radio frequency board to board connector characterized by: by detaining cup (1), detain cup (2) and interior outer conductor assembly down and constitute, wherein:
the main body of the upper buckling cup (1) is of a first cup body structure, a first through hole (3) penetrating through the main body is formed in the bottom of the first cup body, the bottom surface of the first cup body is a first contact surface (4), the inner wall surface of the first cup body is a first inner conical surface (5) or a first inner arc surface, at least two first open grooves (6) are formed in the inner wall of the first cup body, the first open grooves (6) penetrate through the wall thickness and the top of the first cup body, and all the first open grooves (6) are uniformly distributed in the circumferential direction of the first cup body;
the main body of the lower buckling cup (2) is of a second cup body structure, a second through hole (7) penetrating through the bottom of the second cup body is formed in the bottom surface of the second cup body, a second contact surface (8) is formed in the bottom surface of the second cup body, the inner wall surface of the second cup body is a second inner conical surface (9) or a second inner arc surface, at least two second open grooves (10) are formed in the inner wall of the second cup body, the second open grooves (10) penetrate through the wall thickness and the top of the second cup body, all the second open grooves (10) are uniformly distributed in the circumferential direction of the second cup body, annular positioning grooves (11) are formed in the bottoms of the second inner conical surface (9) or the second inner arc surface, and the diameter of the bottoms of the annular positioning grooves (11) is larger than that of the second inner conical surface (9) or the bottoms of the second inner;
the inner conductor and outer conductor assembly comprises an outer conductor (12), an inner conductor (14) and an insulator (13), wherein the main body of the outer conductor (12) is a tubular body, an upper lug (19) protruding outwards is arranged on the outer side of the upper end of the tubular body, and a lower lug (20) protruding outwards is arranged on the outer side of the lower end of the tubular body; the inner conductor (14) consists of an upper needle head (15), a lower needle head (16), a needle tube (17) and a spring (18), wherein the upper needle head (15) and the lower needle head (16) are respectively formed by fixedly connecting or integrally connecting a contact head and a sliding body, the sliding body of the upper needle head (15) is positioned in a tube hole at the upper end of the needle tube (17) and is in sliding fit with the tube hole, the contact head of the upper needle head (15) extends out of the upper end of the needle tube (17), the lower needle head (16) is positioned in a tube hole at the lower end of the needle tube (17) and is in sliding fit with the tube hole, the contact head of the lower needle head (16) extends out of the lower end of the needle tube (17), and the spring (18) is positioned in the needle tube (17) and is pressed between the upper needle head (15) and the lower; the inner conductor (14) is positioned in the outer conductor (12), an upper needle (15) in the inner conductor (14) is positioned at the upper end of a tubular body of the outer conductor (12), a lower needle (16) in the inner conductor (14) is positioned at the lower end of the tubular body of the outer conductor (12), the inner conductor (14) and the outer conductor (12) are provided with an annular isolation space, and the annular isolation space is filled with an insulator (13) for supporting the inner conductor (14) and the outer conductor (12);
in an assembly state, the opening of the upper buckling cup (1) faces downwards, the opening of the lower buckling cup (2) faces upwards, the top of the inner conductor component and the top of the outer conductor component are located in the upper buckling cup (1), an upper lug (19) of the outer conductor (12) is in contact with a first inner conical surface (5) or a first inner arc surface of the upper buckling cup (1), a contact head of an upper needle head (15) of the inner conductor (14) extends out of a first through hole (3) of the upper buckling cup (1), the bottom of the inner conductor component and the bottom of the outer conductor component are located in the lower buckling cup (2), a lower lug (20) of the outer conductor (12) is located in an annular locating groove (11) of the lower buckling cup (2), and a contact head of a lower needle head (16) of the inner conductor (14) extends out of a second through hole (7) of the lower buckling cup (2).
2. The connector of claim 1, wherein: the first open groove (6) is formed along the axial direction of the first cup body; the second open groove (10) is arranged along the axial direction of the second cup body.
3. The connector of claim 1, wherein: the first contact surface (4) and the second contact surface (8) are both flat surfaces.
4. The connector of claim 1, wherein: the second open groove (10) is formed from the top of the second cup body to the position of the annular positioning groove (11) along the axial direction.
5. The connector of claim 1, wherein: the shape and the size of the upper lug (19) are matched with the shape and the size of the bottom of the first inner conical surface (5) or the first inner cambered surface of the upper buckling cup (1); the shape and the size of the lower lug (20) are matched with the shape and the size of the annular positioning groove (11) of the lower buckle cup (2).
CN201911199572.6A 2019-11-29 2019-11-29 Coaxial radio frequency board is to board connector Active CN111029812B (en)

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CN113285266A (en) * 2021-05-19 2021-08-20 中航光电科技股份有限公司 Reed type low-board-spacing elastic radio frequency connector

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CN201639112U (en) * 2009-12-04 2010-11-17 西安富士达科技股份有限公司 Quick-plugging radio-frequency coaxial connector
CN202127117U (en) * 2011-06-11 2012-01-25 安费诺凯杰科技(深圳)有限公司 Radio-frequency connector capable of calibrating positions
CN103457119A (en) * 2013-08-14 2013-12-18 华为技术有限公司 Self-calibration radio frequency blind plug connector and radio frequency module

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CN1938905A (en) * 2004-04-02 2007-03-28 罗森伯格高频技术有限及两合公司 Coaxial plug-in connection for printed boards, featuring spring-loaded tolerance compensation
US7335068B2 (en) * 2005-11-04 2008-02-26 Advanced Connectek Inc. Board to board connector
CN2870228Y (en) * 2005-12-21 2007-02-14 贵州航天电器股份有限公司 Radio-frequency co-axial electric connector
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Publication number Priority date Publication date Assignee Title
CN113285266A (en) * 2021-05-19 2021-08-20 中航光电科技股份有限公司 Reed type low-board-spacing elastic radio frequency connector
CN113285266B (en) * 2021-05-19 2022-04-01 中航光电科技股份有限公司 Reed type low-board-spacing elastic radio frequency connector

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