Highly reliable connection of a toroidal inductor to a printed board

Abstract

The utility model discloses a kind of high-reliability connecting devices of annular inductor and printed board, including printed board and annular inductor installed on printed board, further including inductor mounting seat and positioning pressboard, the outer periphery of inductor mounting seat is equipped with multiple mounting lugs, multiple first connecting screws are connected with the screw hole on multiple mounting lugs after passing through multiple corresponding through holes on printed board respectively, inductor mounting seat is equipped with mounting seat inner cavity, the cavity wall of mounting seat inner cavity is equipped with multiple lead grooves or lead holes respectively on the opposite sides close to opening end, the middle part of mounting seat inner cavity is equipped with positioning column, annular inductor is placed in mounting seat inner cavity and is sleeved on the outside of positioning column by its own center through hole, second connecting screw is connected with the screw hole of positioning column end after passing through the center through hole on positioning pressboard.The utility model realizes the function of reliably connecting annular inductor and printed board by screw, and also avoids circuit failure due to loosening in vibration environment.

Description

Technical Field

[0001] This utility model relates to an electrical component connection device, specifically a highly reliable connection device between a toroidal inductor and a printed circuit board. Background Technology

[0002] Toroidal inductors are widely used in products such as filters, but their large size and weight have long presented challenges in achieving stable and reliable connections with printed circuit boards (PCBs), posing safety hazards, especially in vibrating environments. For example, in power filters, toroidal inductors, along with capacitors and other components, need to be mounted on the PCB to achieve filtering. Because the leads of toroidal inductors are thin, the traditional mounting method involves fixing the toroidal inductor to the PCB with sealant. This method works fine for static applications, but in vibrating environments, it suffers from insufficient connection stability and is prone to loosening, potentially causing circuit failure. Furthermore, the sealant ages and tends to loosen and detach over time, leaving residue on the PCB. Utility Model Content

[0003] The purpose of this invention is to provide a highly reliable connection device between a toroidal inductor and a printed circuit board in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions: A highly reliable connection device for a toroidal inductor and a printed circuit board includes a printed circuit board and a toroidal inductor mounted on the printed circuit board. It also includes an inductor mounting base and a positioning plate. The inductor mounting base has multiple mounting lugs protruding outwards on its outer periphery. Multiple first connecting screws pass through multiple corresponding through holes on the printed circuit board and connect to screw holes on the mounting lugs. The inductor mounting base has an inner cavity with one open end. Multiple lead slots or lead holes for lead wires to pass through are provided on opposite sides of the cavity wall near the open end. A positioning post is provided in the center of the inner cavity. The toroidal inductor is placed inside the inner cavity and fitted onto the positioning post through its central through hole. A second connecting screw passes through the central through hole on the positioning plate and connects to the screw hole at the end of the positioning post.

[0005] Preferably, in order to leave a gap between the inductor mounting base and the printed circuit board to facilitate heat dissipation, wiring, and adjustment of the height of the toroidal inductor, the inductor mounting base has a plurality of peripheral bosses protruding towards the printed circuit board at one end near the periphery. The mounting lugs protrude towards the printed circuit board at one end, and their end faces are flush with the end faces of the plurality of peripheral bosses.

[0006] Preferably, in order to make the force between the toroidal inductor and the printed circuit board more uniform, a central protrusion ring is provided at the center of one end of the inductor mounting base near the printed circuit board, protruding towards the printed circuit board, and the end face of the central protrusion ring is flush with the end faces of the plurality of peripheral protrusions.

[0007] The beneficial effects of this utility model are as follows: This invention, by adding an inductor mounting base and a positioning plate, facilitates both the reliable connection of the inductor mounting base to the printed circuit board (PCB) using screws and the reliable connection of the toroidal inductor to the inductor mounting base using screws. This achieves a reliable connection between the toroidal inductor and the PCB using screws, ensuring connection stability even in vibrating environments and preventing circuit failure due to loosening. Furthermore, it avoids issues such as sealant peeling over long periods. By providing multiple peripheral bosses and a central protrusion on the inductor mounting base near the PCB, it ensures more balanced force distribution on the PCB, preventing damage caused by localized stress. Attached Figure Description

[0008] Figure 1 This is a top-view perspective view of the highly reliable connection device between the toroidal inductor and the printed circuit board described in this utility model before assembly; Figure 2 This is a top perspective view of the highly reliable connection device between the toroidal inductor and the printed circuit board described in this utility model after assembly. Figure 3 This is a top perspective view of the inductor mounting base of the high-reliability connection device between the toroidal inductor and the printed circuit board described in this utility model; Figure 4 This is a bottom perspective view of the inductor mounting base of the high-reliability connection device between the toroidal inductor and the printed circuit board described in this utility model. Detailed Implementation

[0009] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-4As shown, the high-reliability connection device between the toroidal inductor and the printed circuit board of this utility model includes a printed circuit board 1 and a toroidal inductor 6 mounted on the printed circuit board 1. It also includes an inductor mounting base 3 and a positioning pressure plate 4. The outer periphery of the inductor mounting base 3 is provided with a plurality of mounting lugs 11 protruding outward in the peripheral direction. A plurality of first connecting screws 2 pass through a plurality of corresponding through holes on the printed circuit board 1 and are connected to the screw holes on the plurality of mounting lugs 11. The inductor mounting base 3 is provided with a mounting base cavity 9 with one end open. On the cavity wall of the mounting base cavity 9, on opposite sides near the open end, there are a plurality of lead grooves 8 (or lead holes) for lead wires to pass through. A positioning post 7 is provided in the middle of the mounting base cavity 9. The toroidal inductor 6 is placed in the mounting base cavity 9 and is fitted onto the positioning post 7 through its own central through hole. The second connecting screw 5 passes through the central through hole on the positioning pressure plate 4 and is connected to the screw hole at the end of the positioning post 7.

[0010] Preferably, to allow for a gap between the inductor mounting base 3 and the printed circuit board 1 to facilitate heat dissipation, wiring, and adjustment of the height of the toroidal inductor 6, the inductor mounting base 3 has multiple peripheral bosses 10 protruding towards the printed circuit board 1 at one end near the periphery. The mounting lug 11 protrudes towards the printed circuit board 1 at one end, and its end face is flush with the end face of the multiple peripheral bosses 10. To make the force between the toroidal inductor 6 and the printed circuit board 1 more uniform, the inductor mounting base 3 has a central protruding ring 12 protruding towards the printed circuit board 1 at the center of one end near the printed circuit board 1, and the end face of the central protruding ring 12 is flush with the end face of the multiple peripheral bosses 10.

[0011] like Figures 1-4 As shown, printed circuit board 1 is mounted inside other components such as filters. Other electronic components, such as capacitors, are then mounted on printed circuit board 1 and electrically connected to the toroidal inductor 6, forming a filtering electronic assembly to achieve the filtering function for power signals. The heat generated by the toroidal inductor 6 is dissipated from multiple directions, achieving good heat dissipation.

[0012] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A highly reliable connection device for a toroidal inductor and a printed circuit board, comprising a printed circuit board and a toroidal inductor mounted on the printed circuit board, characterized in that: It also includes an inductor mounting base and a positioning plate. The inductor mounting base has multiple mounting lugs protruding outward in the peripheral direction. Multiple first connecting screws pass through multiple corresponding through holes on the printed circuit board and are connected to the screw holes on the mounting lugs. The inductor mounting base has a mounting base cavity with one open end. On the cavity wall of the mounting base cavity, on opposite sides near the open end, there are multiple lead slots or lead holes for lead wires to pass through. A positioning post is provided in the middle of the mounting base cavity. The toroidal inductor is placed in the mounting base cavity and fitted onto the positioning post through its own central through hole. A second connecting screw passes through the central through hole on the positioning plate and is connected to the screw hole at the end of the positioning post.

2. The high-reliability connection device between the toroidal inductor and the printed circuit board according to claim 1, characterized in that: The inductor mounting base has multiple peripheral bosses that protrude towards the printed circuit board at one end near the periphery. The mounting lugs have one end that protrudes towards the printed circuit board and their end faces are flush with the end faces of the multiple peripheral bosses.

3. The high-reliability connection device between the toroidal inductor and the printed circuit board according to claim 2, characterized in that: The inductor mounting base has a central protrusion ring at one end near the center of the printed circuit board, which protrudes towards the printed circuit board. The end face of the central protrusion ring is flush with the end faces of the plurality of peripheral protrusions.

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