CN219321187U

CN219321187U - Miniaturized halogen-free box-type capacitor

Info

Publication number: CN219321187U
Application number: CN202320261261.3U
Authority: CN
Inventors: 邵宇星; 李仲良; 吴超; 李龙; 赵志芳
Original assignee: ZHEJIANG QIXING CAPACITOR CO Ltd
Current assignee: ZHEJIANG QIXING CAPACITOR CO Ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-07-07
Anticipated expiration: 2033-02-10

Abstract

The utility model relates to a miniaturized halogen-free box-type capacitor, which comprises a capacitor body, two embedded sleeves and two protective sleeves, wherein the capacitor body is provided with a plurality of embedded sleeves; two pins are led out from two ends of the capacitor body along one side direction of the capacitor body, and the two pins are made of tin-plated copper-clad steel; the periphery of the capacitor body is encapsulated with epoxy resin; the two embedded sleeves are respectively sleeved on the two pins, one end of each embedded sleeve is embedded into the epoxy resin package, and the other end of each embedded sleeve extends out of the epoxy resin package; the embedded sleeve is provided with a plurality of jacks in a ring array manner at one end of the embedded sleeve, which extends out of the epoxy resin package; the opening ends of the two protective sleeves are provided with inserting bulges in a ring-shaped array mode, and the two protective sleeves are inserted into the insertion holes of the embedded sleeve through the inserting bulges. The miniature halogen-free box-type capacitor provided by the utility model effectively protects two pins of the box-type capacitor and isolates the two pins from moist air and impurities.

Description

Miniaturized halogen-free box-type capacitor

Technical Field

The utility model relates to the technical field of capacitors, in particular to a miniaturized halogen-free box-type capacitor.

Background

A capacitor is an element that stores electric quantity and electric energy (potential energy). One conductor is surrounded by the other conductor, or the electric field lines from one conductor are all terminated in the conductor system of the other conductor, called a capacitor, two conductors close to each other with a layer of non-conductive insulating medium in between, which constitutes a capacitor that stores electric charge when a voltage is applied between the two plates of the capacitor. The capacitance of a capacitor, which is the ratio of the amount of charge on one conductive plate to the voltage between the two plates, is in basic units farad, and is commonly denoted by the letter C in the circuit diagram.

Currently, two pins on a box capacitor are exposed to the outside, and lack of protection for the pins, the two pins are easily eroded by outside humid air or adhered by foreign materials, thereby affecting their subsequent use.

Accordingly, it is desirable to provide a miniaturized halogen-free cassette capacitor in order that the above-described technical problems can be solved.

Disclosure of Invention

The utility model provides a miniaturized halogen-free box-type capacitor, which effectively protects two pins of the box-type capacitor and isolates the pins from moist air and impurities.

The technical scheme of the utility model is as follows:

a miniaturized halogen-free box-type capacitor comprises a capacitor body, two embedded sleeves and two protective sleeves;

two pins are led out from two ends of the capacitor body along one side direction of the capacitor body, and the two pins are made of tin-plated copper-clad steel; an epoxy resin package is encapsulated around the capacitor body;

the two embedded sleeves are respectively sleeved on the two pins, one end of each embedded sleeve is embedded into the epoxy resin package, and the other end of each embedded sleeve extends out of the epoxy resin package; the embedded sleeve is provided with a plurality of jacks in a ring array mode at one end of the embedded sleeve, which extends out of the epoxy resin package;

the outer wall thickness of two protective sheath with embedding sheathed tube outer wall thickness equals, two be equipped with the grafting arch with annular array mode on the open end of protective sheath, the bellied quantity of grafting with the quantity of jack equals, two the protective sheath is pegged graft through the grafting arch on the embedding sheathed tube jack to realize with embedding sleeve cooperation, cover the pin.

Preferably, a layer of first flame retardant film is adhered to the outer wall of the epoxy resin package.

Specifically, the first flame-retardant film is a halogen-free flame-retardant PC film.

Preferably, a layer of second flame retardant film is adhered to the inner wall of the protective sleeve and the inner wall of the embedded sleeve.

Specifically, the second flame-retardant film is a halogen-free flame-retardant PC film.

Preferably, one end of the embedded sleeve, embedded with the epoxy resin package, extends outwards to form an annular connecting part.

Further, a plurality of protrusions are arranged on the upper surface and the lower surface of the annular connecting portion.

Preferably, the open end of the protective sleeve extends outwardly to form an annular grip.

Preferably, the lengths of the two pins are not equal.

The beneficial effects of the utility model are as follows:

1. the embedded sleeve is matched with the protective sleeve in a plugging manner, so that two pins of the box capacitor are effectively protected from moist air and impurities, and when the box capacitor is assembled, the protective sleeve is only required to be pulled out, so that the plugging protrusions are separated from the jacks;

2. epoxy resin is adopted for encapsulation, no halogen exists, and toxic gas is avoided;

3. simple structure and convenient use.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

Fig. 1 is a schematic structural diagram of two embedded bushings connected to two pins on a capacitor body in the present embodiment;

fig. 2 is a schematic structural view of the protective sleeve in the present embodiment;

fig. 3 is a schematic diagram of the internal structure of a miniaturized halogen-free cassette capacitor of the present embodiment.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 3, the present embodiment proposes a miniaturized halogen-free cartridge capacitor including a capacitor body 1, two insert bushings 3, and two protective jackets 7.

Two pins 2 are led out from two ends of the capacitor body 1 along one side direction of the capacitor body 1, and the two pins 2 are made of tin-plated copper-clad steel; an epoxy resin package 11 is enclosed around the capacitor body 1. In this embodiment, a layer of first flame retardant film 12 is applied on the outer wall of the epoxy resin package 11, so as to play a role in flame retardance. Specifically, the first flame retardant film 12 is a halogen-free flame retardant PC film, which is highly flame retardant and transparent, and does not affect the encapsulation of the epoxy resin.

As shown in fig. 1 and 3, the two embedded sleeves 3 are respectively sleeved on the two pins 2, one end of each embedded sleeve 3 is embedded into the epoxy resin package 11, and the other end of each embedded sleeve 3 extends out of the epoxy resin package 11; the embedded sleeve 3 extends out of one end of the epoxy resin package 11, and a plurality of jacks 6 are arranged in a ring array mode.

In this embodiment, in order to make the embedding sleeve 3 firmly embed the epoxy resin package 11, one end of the embedding sleeve 3 embedded with the epoxy resin package 11 extends outwards to form the annular connection portion 4, so that the embedding sleeve 3 can be effectively prevented from being separated from the epoxy resin package 11 or rotating in the epoxy resin package 11, and the stability of the embedding sleeve can be effectively improved. Further, as shown in fig. 1, a plurality of protrusions 5 are disposed on the upper surface and the lower surface of the annular connecting portion 4, so that the contact area between the annular connecting portion 4 and the epoxy resin package 11 is further increased, and the stability of the annular connecting portion is further improved.

As shown in fig. 2, the thickness of the outer wall of the two protecting jackets 7 is equal to that of the outer wall of the embedded sleeve 3, inserting protrusions 8 are arranged at the opening ends of the two protecting jackets 7 in a ring array mode, the number of the inserting protrusions 8 is equal to that of the inserting holes 6, the two protecting jackets 7 are inserted into the inserting holes 6 of the embedded sleeve 3 through the inserting protrusions 8, so that the protecting jackets are matched with the embedded sleeve 3, pins are covered, the pins or magazines are effectively prevented from being corroded by humid air, and the protecting jackets are pulled out downwards when the box-type capacitor is installed.

In this embodiment, in order to facilitate pulling out the protective sleeve 7, the open end of the protective sleeve 7 extends outwards to form an annular gripping portion 9, and a worker pushes the annular gripping portion 9 downward with fingers, so that the protective sleeve 7 and the embedded sleeve 3 can be separated.

In this embodiment, a layer of second flame retardant film (not shown in the figure) is applied on the inner wall of the protective sleeve 7 and the inner wall of the embedded sleeve, so as to play a role in flame retardance, and prevent residues after the embedded sleeve 3 or the protective sleeve 7 burns from adhering to the pins 2. Specifically, the second flame-retardant film is also a halogen-free flame-retardant PC film, for the same reasons as the first flame-retardant film.

In this embodiment, in order to distinguish the positive and negative electrodes of the two pins 2, the two pins are different in length.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The miniature halogen-free box-type capacitor is characterized by comprising a capacitor body, two embedded sleeves and two protective sleeves;

2. The miniaturized halogen-free cassette capacitor of claim 1 wherein the outer wall of the epoxy encapsulation has a layer of a first flame retardant film applied thereto.

3. The miniaturized halogen-free capacitor of claim 2 wherein the first flame retardant film is a halogen-free flame retardant PC film.

4. The miniaturized halogen-free cassette capacitor of claim 1 wherein a layer of a second flame retardant film is applied to both the inner wall of the protective sleeve and the inner wall of the embedded sleeve.

5. The miniaturized halogen-free capacitor of claim 4 wherein the second flame retardant film is a halogen-free flame retardant PC film.

6. The miniaturized halogen-free cassette capacitor of claim 1 wherein the end of the embedded sleeve embedded in the epoxy package extends outwardly to form an annular connection.

7. The miniaturized halogen-free cassette capacitor of claim 6 wherein the annular connection portion has a plurality of protrusions on both the upper and lower surfaces.

8. The miniaturized halogen-free cassette capacitor of claim 1 wherein the open end of the protective sleeve extends outwardly to form an annular grip.

9. The miniaturized halogen-free cartridge capacitor of claim 1 wherein the two pins are not equal in length.