Highly vibration-resistant inductive electromagnetic shielding assembly

Abstract

The utility model discloses an inductance type electromagnetic shielding assembly of high -efficient anti -vibration, including shell and be placed in the printed board of shell, annular inductance and clamp, and clamp includes clamp seat, insulating sleeve and insulation pressboard, be equipped with circular recess on the clamp seat, and insulating sleeve is placed in circular recess, and annular inductance is placed in insulating sleeve, and the pressboard protruding column of insulation pressboard is placed in annular inductance, and first connecting screw is connected with nut after passing through the center through -hole on the groove bottom of circular recess, the center through -hole of the closed end of insulating sleeve, the center through -hole of pressboard protruding column in proper order, and the opposite sides of clamp seat are equipped with the mounting post of external convex, and the axial screw hole and radial screw hole are equipped on the mounting post respectively, and second connecting screw is connected with axial screw hole after passing through the corresponding through -hole on the printed board, and third connecting screw is connected with radial screw hole after passing through the corresponding through -hole on the shell. The utility model makes the inductance assembly with the greatest quality connect with shell, and has better anti -vibration performance in the vibration environment.

Description

Technical Field

[0001] This utility model relates to a printed circuit board inductor assembly for electromagnetic shielding, and more particularly to a high-efficiency vibration-resistant inductor-type electromagnetic shielding assembly. Background Technology

[0002] Electromagnetic shielding is a common function of electronic equipment, used to shield interference signals. It generally includes components such as a housing, a toroidal inductor, a capacitor, and a printed circuit board, which together form an inductive electromagnetic shielding assembly.

[0003] In traditional inductive electromagnetic shielding assemblies, the toroidal inductor is typically mounted on a printed circuit board (PCB), which is then mounted on mounting posts on the housing. If the toroidal inductor is large and heavy and operates in a vibrating environment, there is a risk of the toroidal inductor loosening and the PCB being damaged. In addition, inductive electromagnetic shielding assemblies containing an even number of toroidal inductors (such as two) are more common. In traditional inductive electromagnetic shielding assemblies, multiple toroidal inductors are typically mounted side by side on the PCB, resulting in insufficient compactness and a large size of the entire assembly, which is not conducive to reducing the size of electronic devices. Utility Model Content

[0004] The purpose of this invention is to provide a highly efficient vibration-resistant inductive electromagnetic shielding component in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A high-efficiency vibration-resistant inductive electromagnetic shielding assembly includes a housing and a printed circuit board and a toroidal inductor placed inside the housing. It also includes a clamp placed inside the housing. The clamp includes a clamp base, an insulating sleeve, and an insulating pressure plate. The clamp base has a circular recess. The insulating sleeve, open at one end and closed at the other, is placed in the circular recess, with the closed end of the insulating sleeve located at the bottom of the recess. The toroidal inductor is placed inside the insulating sleeve. The insulating pressure plate has a pressure plate protrusion in its center, and the protrusion has a central through hole. The pressure plate protrusion is placed inside the central through hole of the toroidal inductor, and the insulating pressure plate presses down on the toroidal inductor. A first connecting screw... The studs pass sequentially through the central through hole at the bottom of the circular recess of the fixture seat, the central through hole at the closed end of the insulating sleeve, and the central through hole at the center of the pressure plate protrusion before connecting to the nut. The fixture seat has protruding mounting posts on opposite sides, with the axial direction of the mounting posts parallel to the centerline of the circular recess. Each mounting post has an axial threaded hole and a radial threaded hole. Two mounting posts are in close contact with the printed circuit board, and the studs of the two second connecting screws pass through corresponding through holes on the printed circuit board before connecting to the axial threaded holes of the two mounting posts. The studs of the two third connecting screws pass through corresponding through holes on the outer casing before connecting to the radial threaded holes of the two mounting posts.

[0007] Preferably, to facilitate the compact and symmetrical mounting of an even number of ring inductors on both sides of the printed circuit board to reduce the overall size of the assembly, one ring inductor and one clamp constitute one inductor assembly. The high-efficiency vibration-resistant inductive electromagnetic shielding assembly includes an even number of inductor assemblies. One side of the mounting post is provided with an "L"-shaped groove and a connecting through hole at the bottom of the groove. The even number of inductor assemblies are symmetrically located on both sides of the printed circuit board. The axial screw holes and connecting through holes on the two mounting posts on both sides are interconnected. The stud of the second connecting screw passes through the corresponding connecting through hole and the corresponding through hole on the printed circuit board in sequence and then connects to the corresponding axial screw hole.

[0008] Preferably, to prevent the nut from being exposed, the pressure plate protrusion is provided with a blind hole, and the open end of the blind hole passes through the middle of the insulating pressure plate. The central through hole of the pressure plate protrusion passes through the bottom of the blind hole, and the nut is placed in the blind hole.

[0009] The beneficial effects of this utility model are as follows:

[0010] This invention achieves a more stable connection structure by mounting a ring inductor inside a fixture, connecting the fixture to the printed circuit board, and connecting the fixture to the housing. This allows the inductor assembly with the largest mass to be connected to the housing, resulting in better vibration resistance in vibrating environments. By setting an "L"-shaped groove on the mounting post of the fixture base and setting a connecting through hole at the bottom of the groove, an even number of inductor assemblies can be located on both sides of the printed circuit board, improving the compactness of the entire assembly and reducing its size. Attached Figure Description

[0011] Figure 1 This is a perspective view of the assembled inductor component of the high-efficiency vibration-resistant inductor-type electromagnetic shielding component described in this utility model.

[0012] Figure 2 This is a top view of the assembled inductor component of the high-efficiency vibration-resistant inductor-type electromagnetic shielding assembly described in this utility model;

[0013] Figure 3 yes Figure 2 AA enlarged sectional view;

[0014] Figure 4 This is a cross-sectional perspective view of the high-efficiency vibration-resistant inductive electromagnetic shielding assembly described in this utility model. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] like Figures 1-4As shown, the high-efficiency vibration-resistant inductive electromagnetic shielding assembly of this utility model includes a housing 14 and a printed circuit board 16, an annular inductor 7, and a clamp placed inside the housing 14. The clamp includes a clamp base 9, an insulating sleeve 8, and an insulating pressure plate 6. The clamp base 9 has a circular groove (not marked in the figure). The insulating sleeve 8, which is open at one end and closed at the other end, is placed in the circular groove, and the closed end of the insulating sleeve 8 is located at the bottom of the circular groove. The annular inductor 7 is placed inside the insulating sleeve 8. The insulating pressure plate 6 has a pressure plate protrusion 12 in the middle, and the pressure plate protrusion 12 has a central through hole. The pressure plate protrusion 12 is placed in the central through hole of the annular inductor 7, and the insulating pressure plate 6 presses down on the annular inductor 7. The first connecting screw 1... The studs of 1 pass through the central through hole at the bottom of the circular recess of the fixture seat 9, the central through hole at the closed end of the insulating sleeve 8, and the central through hole at the center of the pressure plate protrusion 12, and are then connected to the nut 10. The fixture seat 9 has protruding mounting posts 3 on opposite sides. The axial direction of the mounting posts 3 is parallel to the center line of the circular recess. The mounting posts 3 are provided with axial screw holes 4 and radial screw holes 5 respectively. The two mounting posts 3 are in close contact with the printed circuit board 16, and the studs of the two second connecting screws 15 pass through the corresponding through holes on the printed circuit board 16 and are then connected to the axial screw holes 4 of the two mounting posts 3. The studs of the two third connecting screws 17 pass through the corresponding through holes on the outer shell 14 and are then connected to the radial screw holes 5 of the two mounting posts 3.

[0017] Preferably, to facilitate the compact and symmetrical mounting of an even number of toroidal inductors 7 on both sides of the printed circuit board 16 and reduce the overall size of the assembly, one toroidal inductor 7 and the aforementioned clamp constitute one inductor assembly. The high-efficiency vibration-resistant inductive electromagnetic shielding assembly comprises an even number of inductor assemblies. Figure 4 There are two mounting posts 3. One side of the mounting post 3 has an "L"-shaped groove 2 and a connecting through hole 1 at the bottom of the groove. An even number of the inductor components are symmetrically located on both sides of the printed circuit board 16. The axial screw holes 4 and connecting through holes 1 on the two mounting posts 3 on the two sides are interconnected. The stud of the second connecting screw 15 passes through the corresponding connecting through hole 1 and the corresponding through hole on the printed circuit board 16 in sequence and then connects to the corresponding axial screw hole 4. In order to avoid the nut 10 being exposed, the pressure plate protrusion 12 has a blind hole 13 and the open end of the blind hole 13 passes through the middle of the insulating pressure plate 6. The central through hole of the pressure plate protrusion 12 passes through the bottom of the blind hole 13, and the nut 10 is placed in the blind hole 13.

[0018] like Figures 1-4As shown, during assembly, an even number of inductor components are placed on both sides of the printed circuit board 16, corresponding to each other in pairs. The axial screw holes 4 and connecting through holes 1 on the two corresponding mounting posts 3 on both sides are interconnected. The stud of the second connecting screw 15 is passed through the corresponding connecting through hole 1 and the corresponding through hole on the printed circuit board 16 in sequence, and then connected to the corresponding axial screw hole 4, thus achieving the connection between the inductor component and the printed circuit board 16. Then, it is placed inside the housing 14, and the stud of the third connecting screw 17 is passed through the corresponding through hole on the housing 14 and then connected to the radial screw hole 5 of the corresponding mounting post 3, thus achieving a reliable connection between the inductor component and the housing 14. Finally, the high-reliability assembly of the entire inductive electromagnetic shielding assembly is achieved. When working in a vibration environment, the toroidal inductor 7 and the printed circuit board 16, and the clamp seat 9 and the housing 14 are not easy to loosen, thereby improving the vibration resistance performance. Note: The entire inductive electromagnetic shielding assembly generally also includes other electronic components mounted on the printed circuit board 16. Since they are not related to the innovation of this application, they will not be described in detail here.

[0019] 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 high-efficiency vibration-resistant inductive electromagnetic shielding assembly, comprising a housing and a printed circuit board and a toroidal inductor disposed within the housing, characterized in that: The device also includes a clamp housed within the housing. The clamp comprises a clamp base, an insulating sleeve, and an insulating pressure plate. The clamp base has a circular recess. The insulating sleeve, open at one end and closed at the other, is placed within the circular recess, with the closed end of the insulating sleeve located at the bottom of the recess. The annular inductor is placed within the insulating sleeve. The insulating pressure plate has a pressure plate protrusion in its center, and the pressure plate protrusion has a central through hole. The pressure plate protrusion is placed within the central through hole of the annular inductor, and the insulating pressure plate presses down on the annular inductor. The stud of the first connecting screw passes sequentially through the bottom of the circular recess of the clamp base. The central through hole on the upper part, the central through hole at the closed end of the insulating sleeve, and the central through hole at the center of the pressure plate protrusion are connected to the nut. The opposite sides of the clamp seat are provided with outwardly protruding mounting posts. The axial direction of the mounting posts is parallel to the center line of the circular countersunk groove. The mounting posts are respectively provided with axial screw holes and radial screw holes. The two mounting posts are in close contact with the printed circuit board, and the studs of the two second connecting screws pass through the corresponding through holes on the printed circuit board and are connected to the axial screw holes of the two mounting posts. The studs of the two third connecting screws pass through the corresponding through holes on the outer shell and are connected to the radial screw holes of the two mounting posts.

2. The high-efficiency vibration-resistant inductive electromagnetic shielding assembly according to claim 1, characterized in that: One ring inductor and one clamp constitute an inductor assembly. The high-efficiency vibration-resistant inductor-type electromagnetic shielding assembly includes an even number of inductor assemblies. One side of the mounting post is provided with an "L"-shaped groove and a connecting through hole is provided at the bottom of the groove. The even number of inductor assemblies are symmetrically located on both sides of the printed circuit board. The axial screw holes and connecting through holes on the two mounting posts on the two sides are interconnected. The stud of the second connecting screw passes through the corresponding connecting through hole and the corresponding through hole on the printed circuit board in sequence and then connects to the corresponding axial screw hole.

3. The high-efficiency vibration-resistant inductive electromagnetic shielding assembly according to claim 1 or 2, characterized in that: The pressure plate protrusion has a blind hole, and the open end of the blind hole passes through the middle of the insulating pressure plate. The central through hole of the pressure plate protrusion passes through the bottom of the blind hole, and the nut is placed in the blind hole.

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