CN218100942U

CN218100942U - Shielding structure of electronic transformer

Info

Publication number: CN218100942U
Application number: CN202221972036.2U
Authority: CN
Inventors: 张河海; 张金水; 潘航
Original assignee: Fuzhou Fuhe Electronic Technology Co ltd
Current assignee: Fuzhou Fuhe Electronic Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-12-20
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses a shielding structure of an electronic transformer, which comprises a shielding outer cover and a shielding bottom plate, wherein the shielding outer cover is sleeved outside the electronic transformer; the four sides of the inner side of the shielding outer cover are respectively provided with positioning elastic sheets for compressing the four sides of the electronic transformer, an elastic insulating pad is arranged between the inner bottom surface of the shielding outer cover and the top surface of the electronic transformer, jacks corresponding to pins of the electronic transformer are arranged on the shielding bottom plate, insulating sleeves are arranged in the jacks, the pins of the electronic transformer penetrate through the insulating sleeves and extend out of the shielding bottom plate, the four sides of the shielding bottom plate are respectively provided with connecting fins, the shielding outer cover is provided with press fit slotted holes, and the connecting fins are correspondingly riveted in the press fit slotted holes after being bent so as to fixedly connect the shielding outer cover and the shielding bottom plate together. The utility model discloses can carry out sealed package with electronic transformer, the small electronic transformer of encapsulation is very fit for to the shielding housing, and the electronic transformer that prevents that can be fine after the shielding outwards radiates electromagnetic interference, and the occasion that requires height at electromagnetic interference resistance that can be fine is used.

Description

Shielding structure of electronic transformer

Technical Field

The utility model relates to an electronic transformer technical field especially relates to an electronic transformer shielding structure.

Background

An electronic transformer is a commonly used electronic component on a circuit board such as a power circuit, and is composed of a bobbin, a coil, an iron core, a magnetic core, or the like. In some precision circuits or electronic devices, it is necessary to shield the electronic transformer to prevent electromagnetic interference radiated from coil windings, iron cores, magnetic cores, etc. in the electronic transformer (especially, high-frequency transformer) from affecting the normal operation of peripheral electronic circuits.

The traditional electronic transformer is generally provided with a metal shielding shell outside the traditional electronic transformer, the metal shielding shell is suitable for being installed on the electronic transformer with larger volume, the bottom of the electronic transformer, which is contacted with a circuit board, can not be wrapped by the metal shielding shell, the electronic transformer is not completely wrapped by the metal shielding shell, and the existing electronic transformer shielding cover is difficult to meet the requirement on the application occasions with high electromagnetic interference (EMI) resistance requirements.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, an object of the utility model is to provide an electronic transformer shielding structure, can seal the shielding housing that wraps up electronic transformer through the setting, the shielding housing is fit for encapsulating miniature electronic transformer very much, can be fine after the shielding prevent electronic transformer external radiation electromagnetic interference, can be fine use in the occasion that the electromagnetic interference resistance requirement is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a shielding structure of an electronic transformer comprises a shielding outer cover and a shielding bottom plate, wherein the shielding outer cover is sleeved outside the electronic transformer; the electronic transformer pin joint structure is characterized in that positioning elastic pieces for tightly pressing four sides of the electronic transformer are respectively arranged on four sides of the inner side of the shielding outer cover, an elastic insulating pad is arranged between the bottom surface of the inner side of the shielding outer cover and the top surface of the electronic transformer, jacks corresponding to the pins of the electronic transformer are arranged on the shielding bottom plate, insulating sleeves are arranged in the jacks, the pins of the electronic transformer penetrate through the insulating sleeves and extend out of the shielding bottom plate, connecting fins are respectively arranged on four sides of the shielding bottom plate, a pressing slotted hole is arranged on the shielding outer cover, and the connecting fins are correspondingly riveted in the pressing slotted hole after being bent to fixedly connect the shielding outer cover and the shielding bottom plate together.

Furthermore, an isolation flange is arranged in the insulation sleeve and is attached to the outer side face of the shielding bottom plate.

Furthermore, insulating glue is poured between the shielding outer cover and the electronic transformer.

Furthermore, each side of the inner side of the shielding outer cover is provided with two positioning elastic sheets.

Furthermore, the shielding bottom plate is formed by processing an aluminum alloy plate or a stainless steel plate, and the shielding outer cover is formed by processing an aluminum alloy plate or a stainless steel plate.

Furthermore, the connecting fins and the pressing groove holes are of an inserting and splicing structure which facilitates mutual riveting and buckling.

Furthermore, the number of the connecting fins on each side of the shielding bottom plate is two, and the number of the pressing groove holes on each side of the shielding outer cover is also two.

The utility model discloses following beneficial effect has:

1. the utility model discloses a set up the shielding housing of constituteing by shielding dustcoat and shielding bottom plate, can be fine with the sealed parcel of electronic transformer, the shielding housing is especially suitable for the miniature electronic transformer of encapsulation, can be fine after the shielding prevent electronic transformer external radiation electromagnetic interference, the occasion that requires height at the electromagnetic interference resistance that can be fine is used.

2. The utility model discloses set up the pressfitting slotted hole in the shielding dustcoat, set up in the shielding bottom plate and be convenient for with the mutual connection fin of riveting lock of pressfitting slotted hole, connect the fin and correspond the riveting after bending and be in the same place shielding dustcoat and shielding bottom plate fixed connection in the pressfitting slotted hole, firm reliable after the riveting, especially adapted frivolous casing is connected with the bottom plate, does not need extra fastener, also is fit for electronic transformer automatic assembly production.

3. The utility model discloses behind the outer shielding housing that increases of electronic transformer, its appearance is more regular, non-deformable, and automatic feeding when being fit for circuit board SMT production more is favorable to improving production efficiency.

Drawings

Fig. 1 is a schematic front view of the shielding structure of the electronic transformer of the present invention;

FIG. 2 isbase:Sub>A schematic cross-sectional view taken along the line A-A in FIG. 1;

fig. 3 is a schematic perspective view of the shielding structure of the electronic transformer of the present invention;

fig. 4 is a schematic perspective view of the shielding housing of the present invention;

fig. 5 is a schematic perspective view of the shielding bottom plate of the present invention;

fig. 6 is a perspective view of the insulating sheath of the present invention.

Description of reference numerals:

1. a shielding enclosure; 11. positioning the elastic sheet; 12. pressing the slot hole; 2. a shielding chassis; 21. a jack; 22. connecting the fins; 3. an electronic transformer; 4. an elastic insulating pad; 5. an insulating sleeve; 51. and (4) isolating the flange.

Detailed Description

The invention will be described in further detail with reference to the following drawings and specific embodiments:

referring to fig. 1-6, a shielding structure of an electronic transformer comprises a shielding housing 1 and a shielding bottom plate 2, wherein the shielding housing 1 is sleeved outside an electronic transformer 3; the four sides of the inner side of the shielding outer cover 1 are respectively provided with two positioning elastic sheets 11 for pressing the four sides of the electronic transformer 3 (the positioning elastic sheets 11 can be riveted in the shell), and the four sides of the electronic transformer 3 can be elastically pressed by utilizing the positioning elastic sheets 11, so that the electronic transformer 3 does not need to be wound with an insulating tape, and the electronic transformer 3 can be integrally subjected to impregnation treatment after being placed in the shielding outer cover 1; the utility model discloses a shielding bottom plate, including shielding dustcoat 1, electronic transformer 3, jack 21, insulating cover 5, connecting fin 22, shielding dustcoat 1, be equipped with elastic insulation pad 4 between the inboard bottom surface of shielding dustcoat 1 and the 3 top surfaces of electronic transformer, (elastic insulation pad 4 can be formed by the processing of silica gel foam), be equipped with on shielding bottom plate 2 with the jack 21 that 3 stitches of electronic transformer correspond, be equipped with insulating cover 5 in the

jack

21, 3 stitches of electronic transformer pass insulating cover 5 and extend to outside shielding bottom plate 2, the four sides of shielding bottom plate 2 are equipped with connecting fin 22 respectively, be equipped with pressfitting slotted hole 12 on the shielding dustcoat 1, connecting fin 22 (before bending with shielding bottom plate 2 be integrative flat structure) bend the back correspond the riveting together with shielding dustcoat 1 and shielding bottom plate 2 fixed connection in the pressfitting slotted hole 12.

An isolation flange 51 is arranged in the insulating sleeve 5, the isolation flange 51 is attached to the outer side face of the shielding bottom plate 2, and the isolation flange 51 is used for separating the shielding bottom plate 2 from the circuit board.

Insulating glue is filled between the shielding outer cover 1 and the electronic transformer 3, and only a little of the insulating glue can be added to adhere the electronic transformer 3 as required, and the insulating glue can also be filled.

The shielding bottom plate 2 is formed by processing an aluminum alloy plate (preferable) or a stainless steel plate, and the shielding outer cover 1 is formed by processing an aluminum alloy plate or a stainless steel plate (preferable). The connecting fins 22 and the pressing groove holes 12 are of splicing structures (such as dovetail-shaped or omega-shaped splicing building block type structures) which are convenient for mutual riveting and buckling. The number of the connecting fins 22 on each side of the shielding bottom plate 2 is two, and the number of the press-fit slot holes 12 on each side of the shielding outer cover 1 is also two, so that mutual riveting is facilitated.

The above only is the detailed implementation manner of the present invention, not limiting the patent scope of the present invention, all the equivalent structure changes made in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electronic transformer shielding structure which characterized in that: the transformer comprises a shielding outer cover (1) and a shielding bottom plate (2), wherein the shielding outer cover (1) is sleeved outside an electronic transformer (3); the electronic transformer shielding device is characterized in that four sides of the inner side of the shielding outer cover (1) are respectively provided with positioning elastic sheets (11) for tightly pressing four sides of the electronic transformer (3), elastic insulating pads (4) are arranged between the bottom surface of the inner side of the shielding outer cover (1) and the top surface of the electronic transformer (3), jacks (21) corresponding to pins of the electronic transformer (3) are arranged on the shielding bottom plate (2), insulating sleeves (5) are arranged in the jacks (21), the pins of the electronic transformer (3) penetrate through the insulating sleeves (5) and extend out of the shielding bottom plate (2), four sides of the shielding bottom plate (2) are respectively provided with connecting fins (22), pressing slotted holes (12) are arranged on the shielding outer cover (1), and the connecting fins (22) are correspondingly riveted in the pressing slotted holes (12) to fixedly connect the shielding outer cover (1) and the shielding bottom plate (2) together.

2. The electronic transformer shielding structure of claim 1, wherein: be equipped with in insulating cover (5) and keep apart flange (51), keep apart flange (51) with shielding bottom plate (2) lateral surface laminating.

3. The electronic transformer shielding structure of claim 1, wherein: insulating glue is filled between the shielding outer cover (1) and the electronic transformer (3).

4. The electronic transformer shielding structure of claim 1, wherein: each side of the inner side of the shielding outer cover (1) is provided with two positioning elastic sheets (11).

5. The electronic transformer shielding structure of claim 1, wherein: the shielding bottom plate (2) is formed by processing an aluminum alloy plate or a stainless steel plate, and the shielding outer cover (1) is formed by processing an aluminum alloy plate or a stainless steel plate.

6. The electronic transformer shielding structure of claim 1, wherein: the connecting fins (22) and the pressing slotted holes (12) are of an inserting structure which is convenient to rivet and buckle with each other.

7. An electronic transformer shielding structure according to claim 1 or 6, characterized in that: the number of the connecting fins (22) on each side of the shielding bottom plate (2) is two, and the number of the pressing slotted holes (12) on each side of the shielding outer cover (1) is also two.