Weldless flexible printed board radio frequency connector

Abstract

This utility model discloses a solderless flexible printed circuit board RF connector, including an outer conductor assembly, an inner conductor assembly, and a dielectric body arranged coaxially. The inner conductor assembly is fixed in the outer conductor assembly through the dielectric body. A positioning plate is provided on the surface of the outer conductor assembly at its end position. The positioning plate has mounting holes. This utility model uses an elastic connection mechanism composed of springs, steel balls, and the inner conductor to automatically adapt to tolerances, eliminate contact gaps caused by vibration, and ensure a reliable electrical connection between the inner conductor assembly and the printed circuit board. Axial fixation is achieved through the mounting holes on the positioning plate and screws, without interfering with the radial floating of the module. It is suitable for systems with limited installation space, simplifies the installation process, and improves installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency coaxial connector technology, and in particular to a solderless flexible printed circuit board radio frequency connector. Background Technology

[0002] Currently, RF connectors can be used for interconnection between printed circuit boards, between RF modules, and between circuit boards and RF modules. The connectors currently used between modules mainly adopt the button connection method, which increases the cost and assembly process difficulty, and also requires high processing precision of the parts. Therefore, a solderless flexible printed circuit board RF connector is proposed to solve this problem. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0004] A solderless flexible printed circuit board RF connector includes an outer conductor assembly, an inner conductor assembly, and a dielectric body arranged coaxially. The inner conductor assembly is fixed in the outer conductor assembly by the dielectric body. A positioning plate is provided on the surface of the outer conductor assembly at its end position. The positioning plate has a mounting hole. The inner conductor assembly includes an inner conductor one, a mounting cavity opened axially at the end of the inner conductor one, an inner conductor two movably inserted into the end of the mounting cavity, and a spring abutting against the interior of the mounting cavity and between the inner conductor two.

[0005] As an improvement to the above technical solution, a steel ball is abutting between the spring and the second inner conductor.

[0006] As an improvement to the above technical solution, the outer conductor assembly includes an outer conductor one and an outer conductor two arranged coaxially, and the outer conductor one and the outer conductor two are interference-fitted.

[0007] As an improvement to the above technical solution, a screw is provided in the mounting hole.

[0008] The beneficial effects of this utility model are:

[0009] The elastic connection mechanism consisting of springs, steel balls, and inner conductors can automatically adapt to tolerances, eliminate contact gaps caused by vibration, and ensure a reliable electrical connection between the inner conductor assembly and the printed circuit board.

[0010] The low contact resistance of the steel balls reduces signal transmission energy loss, and the shielding structure formed by the outer conductor assembly isolates external electromagnetic interference, ensuring stable and efficient transmission of radio frequency signals and maintaining signal integrity and stability.

[0011] It adopts a solderless interconnection method, and achieves axial fixation by using mounting holes on the positioning plate and screws. It does not interfere with the radial floating of the module, and is suitable for system equipment with small installation space, simplifying the installation process and improving installation efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the overall structure of this utility model; Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0015] Solderless flexible printed circuit board RF connectors, including:

[0016] The device includes an outer conductor assembly, an inner conductor assembly, and a dielectric body 4 arranged coaxially. The inner conductor assembly is fixed in the outer conductor assembly through the dielectric body 4. A positioning plate is provided on the surface of the outer conductor assembly at its end position. The positioning plate has a mounting hole. The inner conductor assembly includes an inner conductor 5, a mounting cavity opened axially at the end of the inner conductor 5, an inner conductor 1 movably inserted into the end of the mounting cavity, and a spring 3 abutting against the interior of the mounting cavity and between the inner conductor 1 and the inner conductor 1.

[0017] Specifically, the mounting holes on the positioning plate are used to accurately install the connector into the corresponding position on the printed circuit board, ensuring that the relative position of the connector and the printed circuit board is fixed. When the connector is mated with the printed circuit board, the inner conductor assembly exhibits an elastic connection mechanism.

[0018] Initial state: Spring 3 is in its naturally extended state, pushing the inner conductor 1 out of the mounting cavity so that its end protrudes from the surface of the inner conductor 5;

[0019] Interlocking compression: When the connector contacts the printed circuit board, the inner conductor 1 contracts inward under the pressure of the printed circuit board, the compression spring 3 stores energy, and the inner conductor 1 remains axially fixed, forming a dynamic expansion and contraction structure.

[0020] Dynamic balance: The spring compression increases with the increase of pressure until the inner conductor two is completely in contact with the printed circuit board pad. At this time, the spring force is converted into a constant contact pressure, eliminating the contact gap caused by tolerance or vibration.

[0021] This ensures a reliable electrical connection between the inner conductor assembly and the printed circuit board, guaranteeing stable and efficient transmission of radio frequency signals through the inner conductor assembly. It is used for solderless interconnection of the central pads on the printed circuit board, enabling solderless interconnection. After installation on the substrate, it allows for axial fixation of the entire connector without interfering with the radial floating of the module, making it suitable for systems with limited installation space. The outer conductor assembly not only shields against external electromagnetic interference but also provides mechanical support for the inner conductor assembly. During connection, the outer conductor assembly cooperates with the outer conductor portion of the external device to form a complete shielding structure, further enhancing the protection against electromagnetic interference and ensuring that the radio frequency signal is not affected by external interference during transmission, maintaining signal integrity and stability. The inner conductor 1, along with the steel ball 2, spring 3, and inner conductor 5, are assembled into component 1 using a slider riveting process.

[0022] In one embodiment, a steel ball 2 abuts between the spring 3 and the inner conductor 1. The steel ball 2 serves as an intermediate medium for pressure transmission and contacts the inner conductor 1 in a point-contact manner. Compared to surface contact, this contact method greatly reduces contact resistance because contact resistance is inversely proportional to the contact area. Point contact reduces the influence of oxide film and impurities on the contact interface, allowing current to pass through more smoothly and reducing energy loss during signal transmission.

[0023] Meanwhile, because steel ball 1 has spherical symmetry and a rigid contact surface, it can transmit the pressure applied by spring 3 to inner conductor 2 more evenly, avoiding local stress concentration, thereby ensuring stable contact between the contact surfaces. When the connector is subjected to factors such as vibration, impact or temperature change, causing the components to undergo slight displacement, steel ball 2 always maintains a stable contact state, avoiding signal distortion caused by poor contact. When the external pressure disappears, spring 3 recovers its deformation, and steel ball 2 pushes inner conductor 1 outward, continuously maintaining stable contact pressure and ensuring the reliability of electrical connection.

[0024] In one embodiment, the outer conductor assembly includes an outer conductor 1 7 and an outer conductor 2 6 coaxially arranged. The outer conductor 1 7 and the outer conductor 2 6 are interference-fitted. A guide tool press-fits the dielectric body 4 with the outer conductor 2 6 and the first assembly to form the second assembly. Then, the second assembly and the outer conductor 1 7 are assembled to form the third assembly.

[0025] In one embodiment, a screw 8 is provided in the mounting hole. During installation, the mounting hole with screw 8 on the connector positioning plate is precisely aligned with the corresponding threaded hole on the printed circuit board. The screw 8 is tightened using a screwdriver or other tools to ensure that the positioning plate and the printed circuit board fit tightly together, thereby ensuring that the connector is in a stable position during operation and avoiding signal transmission instability caused by loosening.

[0026] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A solderless flexible printed circuit board RF connector, characterized in that, The device includes an outer conductor assembly, an inner conductor assembly, and a dielectric body (4) arranged coaxially. The inner conductor assembly is fixed in the outer conductor assembly through the dielectric body (4). A positioning plate is provided on the surface of the outer conductor assembly at the end position. The positioning plate has a mounting hole. The inner conductor assembly includes an inner conductor one (5), a mounting cavity opened axially at the end of the inner conductor one (5), an inner conductor two (1) movably inserted into the end of the mounting cavity, and a spring (3) abutting between the inner conductor two (1) and the inside of the mounting cavity.

2. The solderless flexible printed circuit board RF connector according to claim 1, characterized in that: A steel ball (2) abuts against the spring (3) and the inner conductor (1).

3. The solderless flexible printed circuit board RF connector according to claim 2, characterized in that: The outer conductor assembly includes an outer conductor one (7) and an outer conductor two (6) arranged coaxially, and the outer conductor one (7) and the outer conductor two (6) are interference-fitted.

4. The solderless flexible printed circuit board RF connector according to claim 1, characterized in that: A screw (8) is provided in the mounting hole.

Images