Inter-board floating coaxial radio frequency connector

Abstract

An inter-board floating coaxial radio frequency connector comprises an insulator, a central conductor, an outer conductor and an outer shell, and an elastic supporting piece and a floating contact piece are arranged in a metal sleeve of the central conductor, so that the elastic supporting piece can abut against the floating contact piece and enable the floating contact piece to be in contact with a PCB. The outer wall of the floating contact element is in contact with the inner wall of the metal sleeve; the outer side of the insulator is provided with the outer conductor with the elastic contact piece, so that the outer conductor can be in floating contact with the PCBs, the application scene that the outer conductor also has the floating requirement is met, the overall floating function of the inter-board floating coaxial radio frequency connector is achieved, sockets do not need to be welded to the two PCBs respectively, and the cost is reduced. And the adapter does not need to be assembled between the two sockets, so that the structure of the inter-board floating coaxial radio frequency connector can be simplified, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to a field, in particular to an inter-board floating coaxial radio frequency connector. Background Art

[0002] The existing inter-board floating coaxial RF connector usually solders sockets on two PCB boards respectively, and then sets an adapter between the two sockets to achieve floating connection. Due to the parts processing technology and assembly requirements, the structure of the inter-board floating coaxial RF connector is complicated, the assembly between the adapter and the two sockets is inconvenient, and the cost is high. Utility Model Content

[0003] The utility model aims to provide an inter-board floating coaxial radio frequency connector, which simplifies the structure and reduces the cost.

[0004] The utility model adopts the following technical solution to solve the above technical problems: an inter-board floating coaxial radio frequency connector, comprising an insulator, a center conductor, an outer conductor and an outer shell, wherein the outer conductor is located on the radially outer side of the insulator, the outer shell is located on the radially outer side of the outer conductor, the outer conductor can cooperate with the center conductor to form a transmission channel, one or both ends of the outer conductor along the axial direction are provided with an elastic contact piece for contacting a PCB board, and when the PCB board moves along the axial direction of the connector, the elastic contact piece can maintain contact with the PCB board;

[0005] The center conductor includes a metal sleeve installed on the inside of the insulator, in which an elastic support and a floating contact are arranged, and the outer wall of the floating contact contacts the inner wall of the metal sleeve. When the PCB moves along the axial direction of the connector, the elastic support can press the floating contact and keep the floating contact in contact with the PCB.

[0006] Preferably, one or both ends of the outer conductor along the axial direction are respectively provided with a plurality of elastic contact pieces which are spaced apart and distributed around the central conductor.

[0007] Preferably, a plurality of elastic contact pieces are provided at one end of the outer conductor along the axial direction, and a conductive glue for contacting the PCB board is provided at one end of the outer shell away from the elastic contact pieces.

[0008] Preferably, two ends of the elastic support member press against the floating contact member and the metal sleeve respectively.

[0009] Preferably, one end of the metal sleeve is open, and the other end is provided with a bent portion for providing support for the elastic support member.

[0010] Preferably, two floating contacts are arranged in the metal sleeve, and ends of the two floating contacts that are away from each other extend out from two ends of the metal sleeve respectively, and two ends of the elastic support member can press the two floating contacts respectively.

[0011] Preferably, the elastic support member is an elastic bending sheet formed by stamping and bending.

[0012] Preferably, the elastic support member is a spring.

[0013] Preferably, the outer wall of the floating contact is provided with a petal-shaped block, and the end of the metal sleeve is provided with an inner ring platform, which can clamp the petal-shaped block to limit the axial relative movement of the metal sleeve and the floating contact.

[0014] Preferably, the outer wall of the outer conductor is a cylindrical surface matching the inner wall of the outer shell, and the inner wall of the outer conductor is a cylindrical surface matching the outer wall of the insulator.

[0015] According to the above technical solution, the beneficial effects of the utility model are:

[0016] The utility model arranges an elastic support member and a floating contact member in the metal sleeve of the center conductor, so that the elastic support member can push the floating contact member and keep the end of the floating contact member in contact with the PCB board, and the outer wall of the floating contact member is in sliding contact with the inner wall of the metal sleeve, and an outer conductor with an elastic contact member is arranged on the outer side of the insulator, so that the outer conductor can also achieve floating contact with the PCB board, meeting the application scenario where the outer conductor also has a floating requirement, and realizing the overall floating function of the inter-board floating coaxial RF connector. Compared with the existing inter-board floating coaxial RF connector, it is no longer necessary to respectively weld sockets on two PCB boards, nor is it necessary to assemble an adapter between the two sockets, so the structure of the inter-board floating coaxial RF connector can be simplified and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the use of embodiment 1;

[0018] Figure 2 A cross-sectional view of the first embodiment

[0019] Figure 3 It is a cross-sectional schematic diagram of Example 1 after removing the outer conductor and the insulator;

[0020] Figure 4 is a schematic diagram of a floating contact member and an elastic bending member of the first embodiment;

[0021] Figure 5 It is a cross-sectional schematic diagram of the second embodiment.

[0022] Markings in the figure: 1. PCB board, 2. outer conductor, 3. floating elastic part, 4. insulator, 5. metal sleeve, 6. floating contact part, 7. elastic bending part, 8. inner ring platform, 9. petal-shaped block, 10. spring, 11. outer shell, 12. conductive glue, 13. bending part. DETAILED DESCRIPTION

[0023] With reference to the accompanying drawings, the specific implementation is as follows:

[0024] A floating coaxial radio frequency connector between boards, comprising an insulator 4, a center conductor, an outer conductor 2 and an outer shell 11, wherein the outer conductor 2 is located on the radially outer side of the insulator 4, the outer shell 11 is located on the radially outer side of the outer conductor 2, one end or both ends of the center conductor are in contact with a PCB board 1, and one end or both ends of the outer conductor 2 along the axial direction are provided with an elastic contact piece 3 for contacting the PCB board 1, so that the outer conductor 2 can cooperate with the center conductor to form a transmission channel, and when the PCB board 1 moves along the axial direction of the connector, the elastic contact piece 3 can maintain contact with the PCB board 1.

[0025] The center conductor includes a metal sleeve 5 installed on the inner side of the insulator 4, and an elastic support member and a floating contact member 6 are arranged inside the metal sleeve 5. The outer wall of the floating contact member 6 contacts the inner wall of the metal sleeve 5, and one end of the floating contact member 6 extends from the metal sleeve 5 and extends to the outside of the insulator 4. When the PCB board 1 moves along the axial direction of the connector, the elastic support member can press the floating contact member 6 and keep the floating contact member 6 in contact with the PCB board 1.

[0026] Embodiment 1: Figure 1-4 As shown, the insulator 4 of the first embodiment is provided with an outer conductor 2 along the radial outer side, the outer conductor 2 is a cylindrical member sleeved and installed on the outer side of the insulator 4, one end of the outer conductor 2 along the axial direction is provided with a plurality of elastic contact pieces 3 evenly spaced around the central conductor, and the end of the outer shell 11 away from the elastic contact pieces 3 is provided with a conductive glue 12 for contacting the PCB board 1. In this embodiment, the elastic contact piece 3 is an arc-shaped spring piece formed by rolling a long strip of metal sheet. The elastic contact piece 3 extends radially from the end of the outer conductor 2. The radial extension direction of the elastic contact piece 3 is first away from the outer conductor 2 and then close to the outer conductor 2. The top of the elastic contact piece 3 maintains contact with the PCB board 1, and a complete grounding loop can be formed. When the PCB board 1 is displaced relative to the outer conductor 2, the elastic contact piece 3 can adapt to the displacement of the PCB board 1 through the elastic action of the arc-shaped spring piece itself, that is, when the PCB board 1 is close to the outer conductor 2, the bending arc of the arc-shaped spring piece will be increased under pressure, and when the PCB board 1 is away from the outer conductor 2, the arc-shaped spring piece will release the pressure on itself and reduce its bending arc, so that the arc-shaped spring piece can maintain contact with the PCB board 1.

[0027] like Figure 1-4As shown, the insulator 4 of the first embodiment is provided with a through hole, in which a metal sleeve 5 is inserted and installed, and the metal sleeve 5 is relatively fixed to the insulator 4 by interference fit, one end of the metal sleeve 5 is open, and the other end is provided with a bending portion 13 for providing support for the floating contact 6, a floating contact 6 is provided in the metal sleeve 5, and the elastic support is an elastic bending piece 7 formed by stamping and bending, and the two ends of the elastic support respectively press the floating contact 6 and the bending portion 13 of the metal sleeve 5. When the PCB board 1 moves along the axial direction of the connector, the floating contact 6 and the bending portion 13 of the metal sleeve 5 can both keep in contact with the PCB board 1.

[0028] like Figure 3 , 4 As shown, the floating contact 6 of the first embodiment is a hollow cylindrical structure, and one end of the floating contact 6 that contacts the PCB board 1 has a plurality of petal structures, and the plurality of petal structures are all bent toward the axial position of the floating contact 6, and there are mutually separated slots between the petal structures. Therefore, when the PCB board 1 squeezes the floating contact 6, the plurality of petal structures can shrink inwardly, so that the floating contact 6 still maintains full contact with the PCB board 1 after being squeezed by the PCB board 1.

[0029] like Figure 3 , 4 As shown, the outer wall of the floating contact 6 is provided with a petal-shaped block 9, and the end of the metal sleeve 5 is provided with an inner ring platform 8, which can hold the petal-shaped block 9, thereby limiting the axial relative movement of the metal sleeve 5 and the floating contact 6. The inner ring platform 8 of this embodiment is realized by forming a conical surface that shrinks inward at the end of the metal sleeve 5. In addition, other limiting structures that can hold the petal-shaped block 9 can also be installed at the end of the cylindrical metal sleeve 5.

[0030] In the second embodiment, the floating contact member 6 used in the first embodiment is replaced by two floating contact members 6, and the two ends of the elastic bending piece 7 are respectively connected to the two floating contact members 6. In addition, the elastic bending piece 7 can be replaced by a spring 10, and the floating contact of the floating contact member 6 is achieved by the elastic force of the spring 10.

[0031] like Figure 5As shown, the inner side of the insulator 4 of the second embodiment is provided with a metal sleeve 5 with two open ends, and two floating contacts 6 are provided in the metal sleeve 5. The elastic support is a spring 10, and the two ends of the spring 10 respectively extend into the inner sides of the two floating contacts 6 and press the two floating contacts 6 at the same time. The floating contact of the two floating contacts 6 is achieved by the elastic force of the spring 10, and the two ends of the outer conductor 2 of the second embodiment along the axial direction are respectively provided with a plurality of elastic contacts 3 evenly spaced around the central conductor, so that the double-head floating of the product can be achieved. In comparison, the end of the outer conductor 2 of the first embodiment provided with the conductive glue 12 can only maintain contact with the PCB board 1 through the elasticity of the conductive glue 12 itself, and the floating range of the connector is limited.

[0032] The inner wall surface of the insulator 4 and the outer wall surface of the floating contact 6 are cylindrical surfaces that match the inner and outer circular surfaces of the metal sleeve 5 respectively, the outer wall of the outer conductor 2 is a cylindrical surface that matches the inner wall of the outer shell 11, and the inner wall of the outer conductor 2 is a cylindrical surface that matches the outer wall of the insulator 4, which can ensure uniform characteristic impedance and improve RF transmission performance.

Claims

1. An inter-board floating coaxial RF connector, characterized in that: The connector comprises an insulator (4), a center conductor, an outer conductor (2) and an outer shell (11), wherein the outer conductor (2) is located on the outer side of the insulator (4) in the radial direction, and the outer shell (11) is located on the outer side of the outer conductor (2) in the radial direction. The outer conductor (2) can cooperate with the center conductor to form a transmission channel. An elastic contact piece (3) for contacting a PCB (1) is provided at one or both ends of the outer conductor (2) in the axial direction. When the PCB (1) moves in the axial direction of the connector, the elastic contact piece (3) can maintain contact with the PCB (1). The central conductor comprises a metal sleeve (5) mounted on the inner side of an insulator (4), wherein an elastic support member and a floating contact member (6) are arranged in the metal sleeve (5), wherein the outer wall of the floating contact member (6) contacts the inner wall of the metal sleeve (5), and when the PCB board (1) moves along the axial direction of the connector, the elastic support member can press the floating contact member (6) and keep the floating contact member (6) in contact with the PCB board (1).

2. The inter-board floating coaxial RF connector according to claim 1, characterized in that: One or both ends of the outer conductor (2) along the axial direction are respectively provided with a plurality of elastic contact pieces (3) which are spaced apart and distributed around the central conductor.

3. The inter-board floating coaxial RF connector according to claim 1, characterized in that: A plurality of elastic contact pieces (3) are provided at one axial end of the outer conductor (2), and a conductive adhesive (12) for contacting the PCB board (1) is provided at one end of the outer shell (11) away from the elastic contact pieces (3).

4. The inter-board floating coaxial RF connector according to claim 1, characterized in that: The two ends of the elastic support member press against the floating contact member (6) and the metal sleeve (5) respectively.

5. The inter-board floating coaxial RF connector according to claim 4, characterized in that: One end of the metal sleeve (5) is open, and the other end is provided with a bent portion (13) for providing support for the elastic support member.

6. The inter-board floating coaxial RF connector according to claim 1, characterized in that: Two floating contact pieces (6) are arranged in the metal sleeve (5), and ends of the two floating contact pieces (6) that are away from each other extend out from two ends of the metal sleeve (5), respectively, and the two ends of the elastic support piece can respectively press the two floating contact pieces (6).

7. The inter-board floating coaxial RF connector according to claim 1, characterized in that: The elastic support member is an elastic bending sheet (7) formed by stamping and bending.

8. The inter-board floating coaxial RF connector according to claim 1, characterized in that: The elastic support member is a spring (10).

9. The inter-board floating coaxial RF connector according to claim 1, characterized in that: The outer wall of the floating contact piece (6) is provided with a petal-shaped clamping block (9), and the end of the metal sleeve (5) is provided with an inner ring platform (8), and the inner ring platform (8) can clamp the petal-shaped clamping block (9) to limit the axial relative movement of the metal sleeve (5) and the floating contact piece (6).

10. The inter-board floating coaxial RF connector according to claim 1, characterized in that: The outer wall of the outer conductor (2) is a cylindrical surface that matches the inner wall of the outer shell (11), and the inner wall of the outer conductor (2) is a cylindrical surface that matches the outer wall of the insulator (4).

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