A new type of radio frequency coaxial connector between plates

Abstract

The present invention discloses a novel inter-board radio frequency coaxial connector, which includes a plug assembly. The plug assembly includes a first outer conductor and a second outer conductor that are movably connected and conduct electricity with each other. One end of the second outer conductor is provided with a receiving groove. One end of the first outer conductor is a first elastic contact end, and an arc-shaped reset convex block is provided on the first elastic contact end. A reset groove that cooperates with the arc-shaped reset convex block is provided on the inner side wall of the receiving groove. A reset guiding surface is provided on one side of the reset groove away from the opening of the receiving groove. The component with the arc-shaped reset convex block and the component with the reset groove can self-correct the radial offset and axial offset, effectively improving the stability of the electrical performance of the inter-board radio frequency coaxial connector.

Description

Technical Field

[0001] The present invention relates to the technical field of communication devices, and particularly to a new type of inter-board radio frequency coaxial connector. Background Art

[0002] Radio frequency coaxial connectors are used for electrical connections between circuit boards, between circuit boards and radio frequency modules, and between radio frequency modules. The existing circuit board interconnection technology mainly adopts a three-piece structure: composed of two sockets and a connecting rod. The radio frequency coaxial connector with such a structure has the problem of inconvenient installation. At the same time, when the connecting rod of the radio frequency coaxial connector with such a structure is installed with a radial deviation, it cannot self-reset and center, resulting in unstable electrical performance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an inter-board radio frequency coaxial connector with stable electrical performance.

[0004] To solve the above technical problem, the technical solution adopted by the present invention is: a new type of inter-board radio frequency coaxial connector, including a plug assembly. The plug assembly includes a first outer conductor and a second outer conductor that are movably connected and conduct electricity with each other. One end of the second outer conductor is provided with a receiving groove. One end of the first outer conductor is a first elastic contact end, and an arc-shaped reset convex block is provided on the first elastic contact end. A reset groove that cooperates with the arc-shaped reset convex block is provided on the inner side wall of the receiving groove, and a reset guiding surface is provided on one side of the reset groove away from the opening of the receiving groove.

[0005] To solve the above technical problem, the present invention also adopts the following technical solution: a new type of inter-board radio frequency coaxial connector, including a plug and a socket. The plug includes a plug outer conductor and a plug inner conductor disposed inside the plug outer conductor. The socket includes a socket outer conductor and a socket inner conductor disposed inside the socket. The plug inner conductor and the socket inner conductor are inserted and conduct electricity through a matching structure of an elastic end and a sliding groove. Among them, an expansion opening is provided on the elastic end. One end of the plug outer conductor is a first elastic contact end, and an arc-shaped reset convex block is provided on the first elastic contact end. One end of the socket outer conductor is provided with a receiving groove. A reset groove that cooperates with the arc-shaped reset convex block is provided on the inner side wall of the receiving groove, and a reset guiding surface is provided on one side of the reset groove away from the opening of the receiving groove.

[0006] The beneficial effects of the present invention are as follows: When there is a radial offset between the component with the arc-shaped reset bump and the component with the reset groove, a force and a reaction force will occur between the reset groove and the arc-shaped reset bump, thereby driving the two components to reset themselves and achieving the coaxiality of the two components; when there is an axial offset between the component with the arc-shaped reset bump and the component with the reset groove, a force and a reaction force will occur between the reset guiding surface and the arc-shaped reset bump, thereby driving the two components to have a relative axial movement and thus resetting themselves; the component with the arc-shaped reset bump and the component with the reset groove can correct the radial offset and axial offset by themselves, effectively improving the stability of the electrical performance of the board-to-board radio frequency coaxial connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Cross-sectional view of the novel board-to-board radio frequency coaxial connector according to Embodiment 1 of the present invention (when the socket and the plug assembly are normally connected);

[0008] Figure 2 Cross-sectional view of the novel board-to-board radio frequency coaxial connector according to Embodiment 1 of the present invention (when there is a radial offset between the socket and the plug assembly);

[0009] Figure 3 Quarter cross-sectional view of the novel board-to-board radio frequency coaxial connector according to Embodiment 1 of the present invention;

[0010] Figure 4 Quarter cross-sectional view of the novel board-to-board radio frequency coaxial connector according to Embodiment 1 of the present invention from another perspective;

[0011] Figure 5 Cross-sectional view of the novel board-to-board radio frequency coaxial connector according to Embodiment 2 of the present invention.

[0012] Reference Signs Description:

[0013] 11. First outer conductor; 12. First elastic contact end; 13. Arc-shaped reset bump; 14. Second elastic contact end; 15. Limit ring; 16. First inner conductor; 17. First insulator; 18. Contact ball part; 19. First limit protrusion; 20. Second limit protrusion; 21. Limit groove; 22. Buffer groove;

[0014] 31. Second outer conductor; 32. Reset groove; 33. Reset guiding surface; 34. Claw; 35. Second inner conductor; 36. Second insulator; 37. First sliding groove; 38. Positioning post; 39. Shielding protrusion;

[0015] 51. Third outer conductor; 52. Third insulator; 53. Third inner conductor; 54. Second sliding groove; 55. Through hole; 56. Insertion guiding surface; 57. Knurled press-in part;

[0016] 61. Outer conductor of the plug; 62. Outer conductor of the socket;

[0017] 7. Circuit board; 8. Fixing member. Detailed implementation manner

[0018] To describe the technical content, achieved objectives and effects of the present invention in detail, the following is described in conjunction with the implementation manners and with reference to the drawings.

[0019] Please refer to Figures 1 to 5 , a novel inter-board radio frequency coaxial connector, including a plug assembly. The plug assembly includes a first outer conductor 11 and a second outer conductor 31 that are movably connected and conduct electricity with each other. One end of the second outer conductor 31 is provided with a receiving groove. One end of the first outer conductor 11 is a first elastic contact end 12. An arc-shaped reset convex block 13 is provided on the first elastic contact end 12. A reset groove 32 that cooperates with the arc-shaped reset convex block 13 is provided on the inner side wall of the receiving groove. A reset guiding surface 33 is provided on one side of the reset groove 32 away from the opening of the receiving groove.

[0020] The structure / working principle of the present invention is briefly described as follows: When there is a radial offset between the component with the arc-shaped reset convex block 13 and the component with the reset groove 32, a force and a reaction force will occur between the reset groove 32 and the arc-shaped reset convex block 13, thereby driving the two components to reset themselves and achieving the coaxiality of the two components; when there is an axial offset between the component with the arc-shaped reset convex block 13 and the component with the reset groove 32, a force and a reaction force will occur between the reset guiding surface 33 and the arc-shaped reset convex block 13, thereby driving the two components to have a relative axial movement and thus resetting themselves.

[0021] As can be seen from the above description, the beneficial effect of the present invention is that the component with the arc-shaped reset convex block 13 and the component with the reset groove 32 can correct the radial offset and axial offset by themselves, effectively improving the stability of the electrical performance of the inter-board radio frequency coaxial connector.

[0022] Further, the plug assembly further includes a first inner conductor 16, a first insulator 17, a second inner conductor 35 and a second insulator 36. The first insulator 17 is sleeved on the first inner conductor 16 and is sleeved inside the first outer conductor 11. The second insulator 36 is sleeved on the second inner conductor 35 and is sleeved inside the second outer conductor 31.

[0023] Further, the number of the first insulators 17 is multiple. The inner peripheral wall of the first outer conductor 11 has two first limiting protrusions 19 spaced along its axial direction. A limiting space for fixing the first insulators 17 is formed between the two first limiting protrusions 19. At least one second limiting protrusion 20 is provided on the first inner conductor 16. The second limiting protrusion 20 is arranged corresponding to the gap between two adjacent first insulators 17 and abuts against the two adjacent first insulators 17 respectively.

[0024] As can be seen from the above description, the first inner conductor 16 and the first insulator 17 are not an integrally formed structure by insert injection molding, effectively reducing the development cost of the injection mold; the assembled structure is more conducive to later maintenance and replacement, and is conducive to reducing the user's usage cost.

[0025] Further, two adjacent first insulators 17 abut against each other. A limiting groove 21 matching with the second limiting protrusion 20 is provided on the joint surface of the two adjacent first insulators 17.

[0026] Further, a buffer groove 22 is provided on the joint surface of two adjacent first insulators 17.

[0027] As can be seen from the above description, the buffer groove 22 can accommodate the deformed surplus material of the first insulator 17, reducing the processing precision requirements of the first insulator 17 and being conducive to controlling the manufacturing cost of the RF connector.

[0028] Further, a positioning post 38 is provided at one end of the second outer conductor 31 away from the accommodation groove.

[0029] As can be seen from the above description, the setting of the positioning post 38 facilitates the positioning and assembly of the second outer conductor 31 and the circuit board 7.

[0030] Further, the plug assembly further includes a circuit board 7. A positioning hole matching with the positioning post 38 is provided on the circuit board 7. The positioning post 38 is welded in the positioning hole.

[0031] As can be seen from the above description, the second outer conductor 31 can be conducted with the circuit board 7 through the positioning post 38.

[0032] Further, a shielding protrusion 39 is provided at one end of the second outer conductor 31 away from the accommodation groove.

[0033] As can be seen from the above description, the shielding protrusion 39 can shield the end of the second inner conductor 35, which is conducive to ensuring the quality of signal transmission of the RF connector.

[0034] Further, it further includes a socket that cooperates with the plug assembly. The socket includes a third outer conductor 51 that is in contact and conduction with the first outer conductor 11, and a knurled press-in portion 57 is provided on the third outer conductor 51.

[0035] As can be seen from the above description, the provision of the knurled press-in portion 57 enables the socket to be more stably and reliably connected to the fixing member 8.

[0036] A new type of inter-board radio frequency coaxial connector includes a plug and a socket. The plug includes a plug outer conductor 61 and a plug inner conductor provided inside the plug outer conductor 61. The socket includes a socket outer conductor 62 and a socket inner conductor provided inside the socket. The plug inner conductor and the socket inner conductor are inserted and conducted through a matching structure of an elastic end and a sliding groove. Among them, an expansion opening is provided on the elastic end. One end of the plug outer conductor 61 is a first elastic contact end 12, and an arc-shaped reset convex block 13 is provided on the first elastic contact end 12. A receiving groove is provided at one end of the socket outer conductor 62, and a reset groove 32 that cooperates with the arc-shaped reset convex block 13 is provided on the inner side wall of the receiving groove. A reset guiding surface 33 is provided on one side of the reset groove 32 away from the opening of the receiving groove.

[0037] Embodiment 1

[0038] Please refer to Figures 1 to 4 , Embodiment 1 of the present invention is: A new type of inter-board radio frequency coaxial connector includes a plug assembly. The plug assembly includes a first outer conductor 11 and a second outer conductor 31 that are movably connected and conduct electricity with each other. A receiving groove is provided at one end of the second outer conductor 31. One end of the first outer conductor 11 is a first elastic contact end 12, and an arc-shaped reset convex block 13 is provided on the first elastic contact end 12. A reset groove 32 that cooperates with the arc-shaped reset convex block 13 is provided on the inner side wall of the receiving groove. A reset guiding surface 33 is provided on one side of the reset groove 32 away from the opening of the receiving groove, and the reset guiding surface 33 is a bevel or an arc surface. A plurality of slots are respectively provided at both ends of the first outer conductor 11 along the axial direction. In this way, both ends of the first outer conductor 11 can have elasticity respectively. Specifically, one end of the first outer conductor 11 can become the first elastic contact end 12, and the other end can become a second elastic contact end 14. The first outer conductor 11 with the arc-shaped reset convex block 13 and the second outer conductor 31 with the reset groove 32 can self-correct the radial offset (refer to Figure 2 ) and the axial offset (refer to Figure 1 ), effectively improving the stability of the electrical performance of the inter-board radio frequency coaxial connector.

[0039] As a preferred embodiment, the opposite two side walls of the reset groove 32 are respectively reset inclined surfaces, and one end of the reset inclined surface far from the opening of the accommodating groove is connected to one end of the reset guiding surface 33. Further preferably, the reset inclined surface and the reset guiding surface 33 are in smooth transition. In this embodiment, the cross-section of the arc-shaped reset bump 13 is semi-circular. When the first inner conductor 16 and the second inner conductor 35 are coaxial, the semi-circle is tangent to the two reset inclined surfaces simultaneously.

[0040] Specifically, a claw 34 is provided at the opening of the accommodating groove of the second outer conductor 31, and a limiting ring 15 that cooperates with the claw 34 is provided at one end of the first outer conductor 11 located in the accommodating groove. Through the cooperation of the claw 34 and the limiting ring 15, the accidental separation of the first and second outer conductors can be effectively prevented, thereby realizing the movable connection of the first and second outer conductors. Optionally, the claw 34 is formed by a riveting process.

[0041] Specifically, the plug assembly further includes a first inner conductor 16, a first insulator 17, a second inner conductor 35, and a second insulator 36. The first insulator 17 is sleeved on the first inner conductor 16 and is sleeved inside the first outer conductor 11. The second insulator 36 is sleeved on the second inner conductor 35 and is sleeved inside the second outer conductor 31. More specifically, contact ball parts 18 are respectively provided at both ends of the first inner conductor 16, and expansion openings are provided on the contact ball parts 18 so that the contact ball parts 18 have elasticity. A first sliding groove 37 is provided at one end of the second inner conductor 35 close to the accommodating groove, and the contact ball part 18 at one end of the first inner conductor 16 is inserted into the first sliding groove 37 and is in contact conduction with the inner wall surface of the first sliding groove 37.

[0042] The number of the first insulators 17 is multiple. Two first limiting protrusions 19 are provided on the inner peripheral wall of the first outer conductor 11 at intervals along its axial direction. A limiting space for fixing the first insulator 17 is formed between the two first limiting protrusions 19. At least one second limiting protrusion 20 is provided on the first inner conductor 16. The second limiting protrusion 20 is arranged corresponding to the gap between two adjacent first insulators 17 and respectively abuts against the two adjacent first insulators 17. To facilitate the assembly of the first insulator 17 into the first outer conductor 11, a guiding inclined surface is provided on the outer side of the first limiting protrusion 19.

[0043] Further, two adjacent first insulators 17 abut against each other, and a limiting groove 21 that cooperates with the second limiting protrusion 20 is provided on the joint surface of two adjacent first insulators 17; preferably, a buffer groove 22 is provided on the joint surface of two adjacent first insulators 17. Of course, in other embodiments, two adjacent first insulators 17 may not contact each other. In this case, two adjacent first insulators 17 clamp and fix the second limiting protrusion 20.

[0044] In this embodiment, the number of the first insulators 17 is two, and the sum of the axial lengths of the two first insulators 17 is slightly less than the length of the first outer conductor 11. In this way, the structural strength of the plug assembly can be increased, and the voltage withstand capacity of the RF connector can be improved.

[0045] The plug assembly further includes a circuit board 7. A positioning post 38 is provided at one end of the second outer conductor 31 away from the accommodating groove. A positioning hole that cooperates with the positioning post 38 is provided on the circuit board 7. Preferably, the positioning post 38 is welded in the positioning hole. The circuit board 7 can be a PCB board.

[0046] To ensure the signal transmission quality of the RF connector, a shielding protrusion 39 is provided at one end of the second outer conductor 31 away from the accommodating groove. In this embodiment, the number of the shielding protrusions 39 is two, and one end of the second inner conductor 35 is located between the two shielding protrusions 39. Optionally, the end surface of the end of the second inner conductor 35 away from the opening of the accommodating groove is coplanar with the end surface of the shielding protrusion 39. Specifically, the number of the positioning posts 38 is two, and the end of the second inner conductor 35 away from the opening of the accommodating groove is located between the two positioning posts 38. The positioning post 38 and the shielding protrusion 39 are both electrically connected to the second outer conductor 31. The cooperation between the positioning post 38 and the shielding protrusion 39 can well surround the end of the second inner conductor 35 away from the opening of the accommodating groove, thereby achieving a relatively good shielding effect on the second inner conductor 35. In other embodiments, the shielding protrusion 39 can also be annular. It is easy to understand that the specific structure of the shielding protrusion 39 is diverse and can be set by the manufacturer itself.

[0047] Further, it further includes a socket that cooperates with the plug assembly. The socket includes a third outer conductor 51 that is in contact and conduction with the first outer conductor 11. A third insulator 52 is provided inside the third outer conductor 51. A third inner conductor 53 is provided on the third insulator 52. One end of the third outer conductor 51 is provided with a receiving groove. The second elastic contact end 14 of the first outer conductor 11 is inserted into the receiving groove and is in contact and conduction with the inner wall of the receiving groove. One end of the third inner conductor 53 located in the receiving groove is provided with a second sliding groove 54. The contact ball portion 18 at the other end of the first inner conductor 16 is inserted into the second sliding groove 54 and is in contact and conduction with the inner wall surface of the second sliding groove 54.

[0048] One end of the third inner conductor 53 located in the receiving groove is provided with a through hole 55. The through hole 55 communicates the second sliding groove 54 with the receiving groove. The opening of the through hole 55 is arranged away from the receiving groove.

[0049] To facilitate the insertion of the first outer conductor 11, an insertion guiding surface 56 is provided at the opening of the receiving groove of the third outer conductor 51. Optionally, the insertion guiding surface 56 is an inclined surface. In this way, the first outer conductor 11 can be assisted to be centered.

[0050] It further includes a fixing member 8 that is conductively connected to the socket. A knurled press-in portion 57 is provided on the third outer conductor 51. A press-in hole that cooperates with the knurled press-in portion 57 is provided on the fixing member 8.

[0051] Embodiment 2

[0052] Please refer to Figure 5 , Embodiment 2 of the present invention is another technical solution proposed on the basis of Embodiment 1. The difference from Embodiment 1 is that the RF coaxial connector in Embodiment 1 is a three-section structure, while the RF coaxial connector in this embodiment is a two-section structure. Specifically: a new type of inter-board RF coaxial connector includes a plug and a socket. The plug includes a plug outer conductor 61 and a plug inner conductor provided inside the plug outer conductor 61. The socket includes a socket outer conductor 62 and a socket inner conductor provided inside the socket. The plug inner conductor and the socket inner conductor are inserted and conductively connected through a matching structure of a third elastic end and a third sliding groove. Among them, an expansion opening is provided on the third elastic end. One end of the plug outer conductor 61 is a first elastic contact end 12. An arc-shaped reset convex block 13 is provided on the first elastic contact end 12. One end of the socket outer conductor 62 is provided with a receiving groove. A reset groove 32 that cooperates with the arc-shaped reset convex block 13 is provided on the inner side wall of the receiving groove. A reset guiding surface 33 is provided on one side of the reset groove 32 away from the opening of the receiving groove.

[0053] As a preferred embodiment, the two opposite side walls of the reset groove 32 are respectively reset inclined surfaces, and one end of the reset inclined surface far from the opening of the accommodation groove is connected to one end of the reset guiding surface 33. Further preferably, the reset inclined surface and the reset guiding surface 33 are in smooth transition. In this embodiment, the cross-section of the arc-shaped reset bump 13 is semi-circular. When the inner conductor of the plug is coaxial with the inner conductor of the socket, the semi-circle is tangent to the two reset inclined surfaces at the same time.

[0054] In summary, in the novel inter-board radio frequency coaxial connector provided by the present invention, the component with the arc-shaped reset bump and the component with the reset groove can self-correct the radial offset and axial offset, effectively improving the stability of the electrical performance of the inter-board radio frequency coaxial connector.

[0055] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A new type of RF coaxial connector between plates, comprising a plug assembly, characterized in that: The plug assembly includes a first outer conductor and a second outer conductor that are movably connected and electrically connected to each other. One end of the second outer conductor is provided with a receiving groove. One end of the first outer conductor is a first elastic contact end, and an arc-shaped reset bump is provided on the first elastic contact end. A reset groove that cooperates with the arc-shaped reset bump is provided on the inner side wall of the receiving groove. A reset guiding surface is provided on one side of the reset groove away from the opening of the receiving groove, and the reset guiding surface is an inclined surface or an arc surface; The two opposite side walls of the reset groove are respectively reset inclined surfaces, and one end of the reset inclined surface away from the opening of the receiving groove is connected to one end of the reset guiding surface; The reset inclined surface and the reset guiding surface are in smooth transition, and the cross section of the arc-shaped reset bump is semi-circular.

2. The novel inter-board radio frequency coaxial connector according to claim 1, wherein: The plug assembly further includes a first inner conductor, a first insulator, a second inner conductor, and a second insulator. The first insulator is sleeved on the first inner conductor and is disposed within the first outer conductor. The second insulator is sleeved on the second inner conductor and is disposed within the second outer conductor.

3. The novel inter-board radio frequency coaxial connector according to claim 2, wherein: The number of the first insulators is multiple. Two first limiting protrusions are provided on the inner peripheral wall of the first outer conductor at intervals along its axial direction. A limiting space for fixing the first insulator is formed between the two first limiting protrusions. At least one second limiting protrusion is provided on the first inner conductor, and the second limiting protrusion is disposed corresponding to the gap between two adjacent first insulators and abuts against the two adjacent first insulators respectively.

4. The novel inter-board radio frequency coaxial connector according to claim 3, wherein: Two adjacent first insulators abut against each other, and a limiting groove that cooperates with the second limiting protrusion is provided on the joint surface of the two adjacent first insulators.

5. The novel inter-board radio frequency coaxial connector according to claim 4, wherein: A buffer groove is provided on the joint surface of two adjacent first insulators.

6. The novel inter-board radio frequency coaxial connector according to claim 2, wherein: A positioning post is provided at one end of the second outer conductor away from the receiving groove.

7. The novel inter-board radio frequency coaxial connector according to claim 6, wherein: The plug assembly further includes a circuit board. A positioning hole that cooperates with the positioning post is provided on the circuit board, and the positioning post is welded in the positioning hole.

8. The novel inter-board radio frequency coaxial connector according to claim 6, wherein: A shielding protrusion is provided at one end of the second outer conductor away from the receiving groove.

9. The novel inter-board radio frequency coaxial connector according to claim 6, wherein: A socket that cooperates with the plug assembly is further included. The socket includes a third outer conductor that is in contact and electrically connected to the first outer conductor, and a knurled press-in portion is provided on the third outer conductor.

10. A novel RF coaxial connector between plates, comprising a plug and a socket. The plug includes a plug outer conductor and a plug inner conductor disposed within the plug outer conductor. The socket includes a socket outer conductor and a socket inner conductor disposed within the socket. The plug inner conductor and the socket inner conductor are inserted and electrically connected through a mating structure of an elastic end and a sliding groove, wherein, An expansion opening is provided on the elastic end. The feature is that one end of the outer conductor of the plug is a first elastic contact end, an arc-shaped reset bump is provided on the first elastic contact end, one end of the outer conductor of the socket is provided with a receiving groove, a reset groove that cooperates with the arc-shaped reset bump is provided on the inner side wall of the receiving groove, a reset guiding surface is provided on one side of the reset groove away from the opening of the receiving groove, and the reset guiding surface is an inclined surface or an arc surface; The two opposite side walls of the reset groove are respectively reset inclined surfaces, and one end of the reset inclined surface away from the opening of the receiving groove is connected to one end of the reset guiding surface; The reset inclined surface and the reset guiding surface are in smooth transition, and the cross section of the arc-shaped reset bump is semi-circular.

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