CN216816814U

CN216816814U - Feed-through capacitor tooling clamp for electromagnetic compatibility test

Info

Publication number: CN216816814U
Application number: CN202122815913.7U
Authority: CN
Inventors: 戴水红; 陆怡霖; 李瑾; 李应杰; 幺阳
Original assignee: Chengdu Hongming Electronics Co Ltd
Current assignee: Chengdu Hongming Electronics Co Ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-06-24
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a punching capacitor tooling fixture for an electromagnetic compatibility test, which comprises a capacitor mounting plate, a first sleeve and a second sleeve, wherein the axial direction of the first sleeve is the same as that of the second sleeve, the axial direction is vertical, the first sleeve and the second sleeve are respectively in threaded connection with the upper part and the lower part of the capacitor mounting plate, a plurality of vertical capacitor mounting screw holes are formed in the capacitor mounting plate, a plurality of punching capacitors are mounted in a plurality of capacitor mounting screw holes which are in one-to-one correspondence through self shell external threads, and two connecting ends at two ends of each punching capacitor are respectively positioned in the first sleeve and the second sleeve. The feedthrough capacitor and the capacitor mounting plate are connected in a 360-degree annular connection mode, so that the feedthrough capacitor has the characteristics of small parasitic inductance to the ground and high self-resonant frequency, has a good effect of inhibiting high-frequency noise, and realizes a good protection effect on two electrodes of the feedthrough capacitor and welding points thereof through the first sleeve and the second sleeve.

Description

Feed-through capacitor tooling clamp for electromagnetic compatibility test

Technical Field

The utility model relates to a tooling clamp for an electromagnetic compatibility test, in particular to a feed-through capacitor tooling clamp for the electromagnetic compatibility test.

Background

In a traditional electromagnetic compatibility test process, in order to enhance the insertion loss of high-frequency noise on power lines and signal lines of equipment, a feedthrough capacitor is often connected in series at each power line and signal line of the equipment close to a plug end, welding spots are subjected to insulation treatment, and then a shell of the feedthrough capacitor is wrapped by conductive cloth to be subjected to grounding treatment, so that high-frequency common-mode noise suppression is performed.

Although the traditional method has a good high-frequency common-mode noise suppression effect, the feedthrough capacitor is not reliably fixed, so that the phenomena of disconnection or short circuit such as welding spot falling, insulating layer peeling and connection of the conducting cloth are easy to occur, and the reliability is extremely low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a high-stability feed-through capacitor tooling clamp for electromagnetic compatibility tests.

The utility model achieves the above purpose through the following technical scheme:

the utility model provides a punching electric capacity frock clamp for electromagnetic compatibility is experimental, includes electric capacity mounting panel, first sleeve and second sleeve, first telescopic axial with the second telescopic axial is the same and establish this axial and be vertical, the upper portion circumference outer wall and the lower part circumference outer wall of electric capacity mounting panel are equipped with the external screw thread respectively, first telescopic inner wall with the telescopic inner wall of second is equipped with the internal thread respectively, first sleeve with the second sleeve respectively with threaded connection is passed through to the upper portion and the lower part of electric capacity mounting panel, be equipped with a plurality of vertical electric capacity installation screw holes on the electric capacity mounting panel, a plurality of punching electric capacity are installed a plurality of at the one-to-one through self casing external screw thread in the electric capacity installation screw hole, two links at punching electric capacity both ends are located respectively first sleeve with in the second sleeve. Description of the utility model: the housing of the feedthrough capacitor is itself a ground terminal, two connection terminals (the two connection terminals may also be referred to as an input terminal and an output terminal) of the feedthrough capacitor are usually two ends of the same pin, the pin contacts with the inner ring wall of the ring filter chip in the feedthrough capacitor to form a first electrode of the feedthrough capacitor, and the housing of the feedthrough capacitor contacts with the outer ring wall of the ring filter chip in the feedthrough capacitor to form a second electrode of the feedthrough capacitor.

Preferably, in order to further increase the contact area between the capacitor mounting plate and the first sleeve and the second sleeve to realize a better grounding effect, the middle part of the capacitor mounting plate is provided with a mounting plate convex ring protruding to the outer side of the circumference, the outer diameter of the mounting plate convex ring is the same as that of the first sleeve and that of the second sleeve, and the upper surface and the lower surface of the mounting plate convex ring are respectively in close contact with the lower end face of the first sleeve and the upper end face of the second sleeve.

The utility model has the beneficial effects that:

according to the utility model, the capacitor mounting plate is designed and is respectively connected with the first sleeve and the second sleeve through threads, the feedthrough capacitor and the capacitor mounting plate are connected in a 360-degree annular connection mode, and then the feedthrough capacitor and the capacitor mounting plate are grounded through the first sleeve or the second sleeve, so that the characteristics of small parasitic inductance to the ground and high self-resonant frequency are achieved, a low-impedance path is provided for interference noise, and the purpose of well inhibiting high-frequency noise is achieved; meanwhile, the capacitor mounting plate and the feedthrough capacitor are reliably fixed, the first sleeve and the second sleeve realize good protection effect on two electrodes of the feedthrough capacitor and welding points thereof, the phenomena of disconnection or short circuit caused by the falling of welding points, the breaking of insulating layers, the connection of conductive cloth and the like in the traditional structure are avoided, and the reliability is obviously improved. For different devices, the piercing capacitors with different capacities can be replaced to repeatedly utilize the clamp.

Drawings

FIG. 1 is a perspective view of a feedthrough capacitor tooling fixture for electromagnetic compatibility testing of the present invention prior to assembly;

fig. 2 is a perspective view of the assembled feedthrough capacitor tooling clamp for the electromagnetic compatibility test according to the present invention.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 and fig. 2, the feedthrough capacitor tooling clamp for electromagnetic compatibility test according to the present invention includes a capacitor mounting plate 9, the capacitor comprises a first sleeve 2 and a second sleeve 11, wherein the axial direction of the first sleeve 2 is the same as that of the second sleeve 11, and the axial direction is vertical, the upper circumferential outer wall and the lower circumferential outer wall of a capacitor mounting plate 9 are respectively provided with an external thread 8, the inner wall of the first sleeve 2 and the inner wall of the second sleeve 11 are respectively provided with an internal thread 1, the first sleeve 2 and the second sleeve 11 are respectively connected with the upper part and the lower part of the capacitor mounting plate 9 through threads, the capacitor mounting plate 9 is provided with a plurality of vertical capacitor mounting screw holes 7, a plurality of feedthrough capacitors 4 are mounted in a plurality of capacitor mounting screw holes 7 in one-to-one correspondence through a shell external thread 5, and two connecting ends, namely a first connecting end 3 and a second connecting end 6, at two ends of the feedthrough capacitor 4 are respectively located in the first sleeve 2 and the second sleeve 11; description of the drawings: the first connecting end 3 and the second connecting end 6 are two ends of the same pin. Preferably, the middle part of the capacitor mounting plate 9 is provided with a mounting plate convex ring 10 protruding towards the outer side of the circumference, the outer diameter of the mounting plate convex ring 10 is the same as the outer diameter of the first sleeve 2 and the outer diameter of the second sleeve 11, and the upper surface and the lower surface of the mounting plate convex ring 10 are respectively in close contact with the lower end face of the first sleeve 2 and the upper end face of the second sleeve 11.

As shown in fig. 1 and 2, during assembly, a plurality of feedthrough capacitors 9 are mounted in a plurality of capacitor mounting screw holes 7 corresponding to one another through the external threads 5 of the housing, and then the first sleeve 2 and the second sleeve 11 are mounted on the upper part and the lower part of the capacitor mounting plate 9 through threads, respectively, and the first sleeve 2 or the second sleeve 11 is grounded, i.e., the feedthrough capacitors 9 are grounded; after the device is installed, the electromagnetic compatibility test can be carried out on the plurality of feedthrough capacitors 9, and the feedthrough capacitors 9 cannot have equal open circuit or short circuit phenomena caused by welding spot falling or insulation failure in the test process.

The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.

Claims

1. The utility model provides a punch through electric capacity frock clamp for electromagnetic compatibility is experimental which characterized in that: including electric capacity mounting panel, first sleeve and second sleeve, first telescopic axial with the telescopic axial of second is the same and establish this axial and be vertical, the upper portion circumference outer wall and the lower part circumference outer wall of electric capacity mounting panel are equipped with the external screw thread respectively, first telescopic inner wall with the telescopic inner wall of second is equipped with the internal thread respectively, first sleeve with second sleeve respectively with threaded connection is passed through to the upper portion and the lower part of electric capacity mounting panel, be equipped with a plurality of vertical electric capacity installation screw on the electric capacity mounting panel, a plurality of electric capacity of punching are installed a plurality of at the one-to-one through self casing external screw thread in the electric capacity installation screw, two links at electric capacity both ends of punching are located respectively first sleeve with in the second sleeve.

2. The feedthrough capacitor tooling clamp for electromagnetic compatibility test of claim 1, which is characterized in that: the middle part of electric capacity mounting panel is equipped with the bellied mounting panel bulge loop in the circumference outside, the external diameter of mounting panel bulge loop with first telescopic external diameter with the telescopic external diameter of second is the same, the upper surface and the lower surface of mounting panel bulge loop respectively with first telescopic lower extreme terminal surface with the telescopic upper end terminal surface in close contact with of second.