Radio frequency connector between circuit boards

Abstract

The utility model relates to the technical field of inter-board signal transmission, in particular to a radio frequency connector between circuit boards. Comprising a first connecting piece and a second connecting piece which is oppositely and detachably connected with the first connecting piece, and the first connecting piece comprises a first outer conductor which is arranged on a first circuit board; the first insulating medium is connected with the first outer conductor, at least one part of the first insulating medium is located on the inner side of the first outer conductor, and a first through hole penetrating in the direction of the first axis is formed in the first insulating medium; the first inner conductor is arranged in the first through hole, and the first end of the first inner conductor is connected with the first circuit board; the second connecting piece comprises a second outer conductor arranged on the second circuit board. According to the utility model, through the first connecting piece and the second connecting piece which are detachably connected in opposite directions, a traditional radio frequency connector between circuit boards is changed from a three-piece type to a two-piece type, the number of elements of the traditional radio frequency connector is reduced, the structure is simplified, and the installation distance and cost of the circuit boards are reduced.

Description

Technical Field

[0001] This utility model relates to the field of inter-board signal transmission technology, and specifically to an inter-board radio frequency connector. Background Technology

[0002] Traditionally, cross-board transmission of radio frequency (RF) signals is achieved through RF connectors. Traditional board-to-board connectors are mainly three-piece coaxial connectors, which are based on the principle of coaxial transmission lines. They overcome the positional deviation between PCBs by using different tilt angles of the middle adapter rod and the gap between the interfaces. However, the three-piece structure contains three independent components, each of which needs to be manufactured, processed and assembled separately, resulting in higher costs. In addition, each of the three components has a certain thickness and size. When assembled together, it increases the thickness of the entire connector, which leads to a larger gap between the circuit boards, occupies more internal space in the device, and increases the length of the signal transmission path. This is especially true for high-frequency signals, which can easily lead to signal attenuation and signal interference. Utility Model Content

[0003] The purpose of this utility model is to provide an inter-circuit RF connector to solve the above-mentioned technical problems;

[0004] The technical problem solved by this utility model can be achieved by the following technical solution:

[0005] An inter-circuit board radio frequency connector includes a first connector and a second connector detachably connected to the first connector, wherein the first connector includes,

[0006] The first outer conductor is disposed on the first circuit board;

[0007] A first insulating medium is connected to the first outer conductor and at least a portion of it is located inside the first outer conductor. The interior of the first insulating medium has a first through hole extending along a first axis.

[0008] A first inner conductor is disposed in the first through hole, and a first end of the first inner conductor is connected to the first circuit board.

[0009] The second connector includes a second outer conductor disposed on the second circuit board. In the connected state, the second outer conductor is snapped into the inner side of the first outer conductor, and the second end of the first inner conductor extends into the second connector, directly connecting to the second circuit board or connecting to the second circuit board through the second connector.

[0010] In a preferred embodiment, the first outer conductor includes,

[0011] The first connecting part connects to the first circuit board;

[0012] The first snap-fit ​​portion includes a plurality of snap-fit ​​plates distributed along the circumferential direction of the first connecting portion. Adjacent snap-fit ​​plates are spaced a certain distance apart. The first end of the snap-fit ​​plate is connected to the first connecting portion, and the second end of the snap-fit ​​plate is inclined toward the direction close to the first through hole and is detachably snap-fitted to the outside of the second outer conductor.

[0013] In a preferred embodiment, a snap-fit ​​groove is provided on the outer side of the second outer conductor, and the end of the second outer conductor away from the second circuit board is inclined toward the direction close to the second axis; in the connected state, the end of the second outer conductor away from the second circuit board abuts against the first insulating medium or is spaced a certain distance from the first insulating medium.

[0014] In a preferred embodiment, the first axis is the axis of the first connector, and the second axis is the axis of the second connector. The first axis and the second axis are coaxial or offset by a certain distance.

[0015] In a preferred embodiment, the first inner conductor includes,

[0016] A conductor post is connected to the first circuit board, and the conductor post is provided with a retractable elastic component;

[0017] The conductor head connects to the elastic component.

[0018] In a preferred embodiment, the second connector is a hollow structure, and in the connected state, the conductor head directly abuts against the connection point of the second circuit board.

[0019] In a preferred embodiment, the second connector further includes,

[0020] The second insulating medium is connected to the inside of the second outer conductor, and the interior of the second insulating medium has a second through hole extending along the direction of the second axis;

[0021] The second inner conductor is disposed in the second through hole, the first end of the second inner conductor is connected to the second circuit board, and the conductor head abuts against the second end face of the second inner conductor.

[0022] In a preferred embodiment, the end of the first inner conductor away from the first circuit board is provided with a socket.

[0023] In a preferred embodiment, the second connector further includes,

[0024] The second insulating medium is connected to the inside of the second outer conductor, and the interior of the second insulating medium has a second through hole extending along the direction of the second axis;

[0025] The second inner conductor includes,

[0026] A conductor block is disposed in the second through hole, and the first end of the conductor block is connected to the second circuit board;

[0027] The insert has a first end connected to the second end of the conductor block, and the second end of the insert has a protruding contact. In the connected state, the contact abuts against the side wall of the socket.

[0028] In a preferred embodiment, the first outer conductor, the first insulating medium, and the first inner conductor are integrally injection molded structures. The first outer conductor has a plurality of injection holes, and the first insulating medium is connected to the first outer conductor through the injection holes.

[0029] The beneficial effects of this utility model are as follows: By adopting the above technical solution, this utility model changes the traditional three-piece RF connector between circuit boards to a two-piece connector through the first and second connectors that are detachably connected to each other, thereby reducing the number of components in the traditional RF connector and simplifying the structure, as well as reducing the installation spacing and cost of the circuit board. Attached Figure Description

[0030] Figure 1 This is a cross-sectional view of the inter-circuit radio frequency connector in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the external connection of the radio frequency connector between circuit boards in an embodiment of this utility model;

[0032] Figure 3 This is a cross-sectional view of the inter-circuit radio frequency connector in an embodiment of the present invention;

[0033] Figure 4 This is a cross-sectional view of the radio frequency connector between circuit boards in an embodiment of this utility model.

[0034] In the attached figures: 1. First connector; 11. First outer conductor; 111. First connecting part; 112. First snap-fit ​​part; 12. First insulating medium; 13. First inner conductor; 131. Conductor post; 132. Conductor head; 133. Socket; 2. Second connector; 21. Second outer conductor; 211. Snap-fit ​​groove; 22. Second insulating medium; 23. Second inner conductor; 231. Conductor block; 232. Insert. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0038] An inter-circuit radio frequency connector, such as Figures 1 to 4 As shown, it includes a first connector 1 and a second connector 2 that is detachably connected to the first connector 1. The first connector 1 includes...

[0039] The first outer conductor 11 is disposed on the first circuit board;

[0040] The first insulating medium 12 is connected to the first outer conductor 11 and at least a portion of it is located inside the first outer conductor 11. The interior of the first insulating medium 12 has a first through hole extending along the first axis.

[0041] The first inner conductor 13 is disposed in the first through hole, and the first end of the first inner conductor 13 is connected to the first circuit board.

[0042] The second connector 2 includes a second outer conductor 21 disposed on the second circuit board. In the connected state, the second outer conductor 21 is snapped into the inner side of the first outer conductor 11, and the second end of the first inner conductor 13 extends into the second connector 2, directly connecting to the second circuit board or connecting to the second circuit board through the second connector 2.

[0043] In a preferred embodiment, the first outer conductor 11 includes,

[0044] The first connecting part 111 connects to the first circuit board;

[0045] The first snap-fit ​​portion 112 includes a plurality of snap-fit ​​plates distributed along the circumferential direction of the first connecting portion 111. Adjacent snap-fit ​​plates are spaced a certain distance apart. The first end of the snap-fit ​​plate is connected to the first connecting portion 111, and the second end of the snap-fit ​​plate is inclined toward the direction close to the first through hole and is detachably snap-fitted to the outside of the second outer conductor 21.

[0046] In a preferred embodiment, a snap-fit ​​groove 211 is provided on the outer side surface of the second outer conductor 21, and the end of the second outer conductor 21 away from the second circuit board is inclined toward the direction close to the second axis; in the connected state, the end of the second outer conductor 21 away from the second circuit board abuts against the first insulating medium 12 or is spaced a certain distance from the first insulating medium 12.

[0047] Specifically, the second end of the snap-fit ​​plate is tilted toward the direction close to the first through hole, and the end of the second outer conductor 21 away from the second circuit board is tilted toward the direction close to the second axis, so that the first outer conductor 11 and the second outer conductor 21 can be automatically guided when they are mated and connected, and the second end of the snap-fit ​​plate will slide into the snap-fit ​​groove 211 along the outer surface of the second outer conductor 21.

[0048] More specifically, traditional RF connectors lack a self-locking mechanism, making them prone to loosening when subjected to vibrations, impacts, or other external forces. This invention addresses this problem by employing an impact-resistant connection method. In the connected state, the second end of the locking plate engages within the locking groove 211, effectively resisting external impacts. Furthermore, the locking groove 211 has a certain length and is covered with anti-slip textures, ensuring stable connection between the second outer conductor 21 and the first outer conductor 11 after mating, preventing the first outer conductor 11 from slipping out. It also provides sufficient tolerance when the first connector 1 and the second connector 2 deviate in axial length, ensuring a smooth connection.

[0049] More specifically, the first insulating medium 12 is mainly used to prevent short circuits and ensure that the outer conductor and the inner conductor do not come into contact with each other. In addition, the first insulating medium 12 wraps around the outside of the first inner conductor 13 to prevent the second outer conductor 21 from coming into contact with the first inner conductor 13 and causing a short circuit when it is radially offset.

[0050] The end of the second outer conductor 21 that is away from the second circuit board abuts against the first insulating medium 12 or is spaced a certain distance from the first insulating medium 12, which can effectively limit the second outer conductor 21 and ensure that the second outer conductor 21 stops after being inserted into place, thus preventing over-insertion.

[0051] In a preferred embodiment, the first axis is the axis of the first connector 1, and the second axis is the axis of the second connector 2. The first axis and the second axis are coaxial or offset by a certain distance.

[0052] Specifically, the snap-fit ​​plate is an elastic component. During connector assembly, the first connector 1 is fixed on the first circuit board, and the second connector 2 is fixed on the second circuit board. However, the positions of the first connector 1 and the second connector 2 do not completely correspond to the first circuit board, resulting in a certain deviation during connection. This utility model has a certain radial tolerance function. Even if the first axis and the second axis deviate by a certain distance during installation, the radial deviation can be forcibly corrected by the deformation of the snap-fit ​​plate to ensure a smooth connection.

[0053] In a preferred embodiment, such as Figure 1 , Figure 2 , Figure 3 As shown, the first inner conductor 13 includes,

[0054] Conductor post 131 connects to the first circuit board, and conductor post 131 is provided with a retractable elastic component;

[0055] Conductor head 132, connecting to the elastic component.

[0056] Specifically, this utility model has an axial tolerance function. The first inner conductor 13 is compatible with different circuit board spacings through a retractable conductor head 132. The elastic component is preferably a spring. In the connected state, the conductor head 132 abuts against the connection point of the second circuit board or the second inner conductor 23, and the spring is in a compressed state.

[0057] In a preferred embodiment, such as Figure 1 , Figure 2 As shown, the second connector 2 has a hollow structure. In the connected state, the conductor head 132 directly abuts against the connection point of the second circuit board.

[0058] In a preferred embodiment, such as Figure 3 As shown, the second connector 2 also includes,

[0059] The second insulating medium 22 is connected to the inside of the second outer conductor 21, and the interior of the second insulating medium 22 has a second through hole extending along the direction of the second axis.

[0060] The second inner conductor 23 is disposed in the second through hole. The first end of the second inner conductor 23 is connected to the second circuit board, and the conductor head 132 abuts against the second end face of the second inner conductor 23.

[0061] In a preferred embodiment, the end of the first inner conductor 13 away from the first circuit board is provided with a socket 133.

[0062] In a preferred embodiment, such as Figure 4 As shown, the second connector 2 also includes,

[0063] The second insulating medium 22 is connected to the inside of the second outer conductor 21, and the interior of the second insulating medium 22 has a second through hole extending along the direction of the second axis.

[0064] The second inner conductor 23 includes,

[0065] Conductor block 231 is disposed in the second through hole, and the first end of conductor block 231 is connected to the second circuit board;

[0066] Insert 232, the first end of insert 232 is connected to the second end of conductor block 231, the second end of insert 232 has a protruding contact, and in the connected state, the contact abuts against the side wall of socket 133.

[0067] Specifically, it includes multiple inserts 232, which are elastic structures capable of certain deformation. This utility model achieves both radial and axial tolerance functions through the inserts 232. First, the inserts 232 can move axially within the insertion hole 133 to achieve compatibility with different plate spacings and meet the axial tolerance. In addition, the inserts 232 have a certain elasticity. When there is radial tolerance, the radial deviation can be corrected by the deformation of the inserts 232 in the radial direction to ensure smooth connection.

[0068] In a preferred embodiment, the first outer conductor 11, the first insulating medium 12, and the first inner conductor 13 are integrally injection molded structures. The first outer conductor 11 is provided with a plurality of injection holes, and the first insulating medium 12 is connected to the first outer conductor 11 through the injection holes.

[0069] Specifically, the first outer conductor 11, the first inner conductor 13, and the first insulating medium 12 are integrally injection molded, eliminating the manual assembly process and reducing costs. In the assembly process, the first insulating medium 12 is injected into the first outer conductor 11 through integral injection molding. The first insulating medium 12 fills the injection hole and wraps around the outer surface of the first inner conductor 13 to form the first connector 1.

[0070] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A radio frequency connector between circuit boards, characterized in that, The first connecting piece (1) comprises, The first outer conductor (11) is arranged on the first circuit board; The first insulating medium (12) is connected to the first outer conductor (11) and at least partially located inside the first outer conductor (11), and the inside of the first insulating medium (12) has a first through hole penetrating in the direction of the first axis; The first inner conductor (13) is arranged in the first through hole, and the first end of the first inner conductor (13) is connected to the first circuit board; The second connecting piece (2) comprises a second outer conductor (21) arranged on the second circuit board, in the connected state, the second outer conductor (21) is clamped on the inside of the first outer conductor (11), the second end of the first inner conductor (13) extends into the second connecting piece (2) and is directly connected to the second circuit board or connected to the second circuit board through the second connecting piece (2).

2. The inter-board radio frequency connector of claim 1, wherein, The first outer conductor (11) comprises, The first connecting part (111) is connected to the first circuit board; The first clamping part (112) comprises a plurality of clamping plates distributed in the circumferential direction of the first connecting part (111), adjacent clamping plates are spaced apart by a certain distance, the first end of the clamping plate is connected to the first connecting part (111), and the second end of the clamping plate is inclined towards the direction close to the first through hole and is detachably clamped with the outside of the second outer conductor (21).

3. The inter-board radio frequency connector of claim 1, wherein, The outside of the second outer conductor (21) is provided with a clamping groove (211), and the end of the second outer conductor (21) away from the second circuit board is inclined towards the direction close to the second axis; in the connected state, the end of the second outer conductor (21) away from the second circuit board abuts on the first insulating medium (12) or is spaced apart from the first insulating medium (12) by a certain distance.

4. The inter-board radio frequency connector of claim 3, wherein, The first axis is the axis of the first connecting piece (1), and the second axis is the axis of the second connecting piece (2), and the first axis and the second axis are coaxially arranged or deviated by a certain distance.

5. The inter-board radio frequency connector of claim 3, wherein, The first inner conductor (13) comprises, The conductor column (131) is connected to the first circuit board, and the conductor column (131) is provided with an extendable elastic component inside; The conductor head (132) is connected to the elastic component.

6. The inter-board radio frequency connector of claim 5, wherein, The second connecting piece (2) is a hollow structure, and in the connected state, the conductor head (132) directly abuts on the connection point of the second circuit board.

7. The inter-board radio frequency connector of claim 5, wherein, The second connecting piece (2) further comprises, The second insulating medium (22) is connected to the inside of the second outer conductor (21), and the inside of the second insulating medium (22) has a second through hole penetrating in the direction of the second axis; The second inner conductor (23) is arranged in the second through hole, the first end of the second inner conductor (23) is connected to the second circuit board, and the conductor head (132) abuts on the second end face of the second inner conductor (23).

8. The inter-board radio frequency connector of claim 3, wherein, The first inner conductor (13) is provided with a jack (133) at one end away from the first circuit board.

9. The inter-board radio frequency connector of claim 8, wherein, The second connecting piece (2) further comprises, A second insulating medium (22) is connected to the inner side of the second outer conductor (21), and the inside of the second insulating medium (22) has a second through hole penetrating in the direction of the second axis; A second inner conductor (23) comprises, A conductor block (231) is arranged in the second through hole, and a first end of the conductor block (231) is connected to the second circuit board; A plug (232) is connected to a second end of the conductor block (231), and a second end of the plug (232) is provided with an outwardly protruding contact point, which abuts against the side wall of the jack (133) in the connected state.

10. The inter-board radio frequency connector of claim 1, wherein, The first outer conductor (11), the first insulating medium (12) and the first inner conductor (13) are integrally injection molded, and the first outer conductor (11) is provided with a plurality of injection holes, and the first insulating medium (12) is connected to the first outer conductor (11) through the injection holes.

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