CN210403478U

CN210403478U - Anti-electromagnetic interference transformer framework

Info

Publication number: CN210403478U
Application number: CN201921542711.6U
Authority: CN
Inventors: 张志林; 骆仁明; 田明超
Original assignee: Tianchang Ruirong Plastic Industry Co Ltd
Current assignee: Tianchang Ruirong Plastic Industry Co Ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-04-24
Anticipated expiration: 2029-09-17

Abstract

The utility model discloses an anti-electromagnetic interference transformer framework, including the skeleton body, the skeleton body outside is provided with the shield cover, the shield cover includes two relative settings and fixed connection's first shield cover and second shield cover, the skeleton body includes the wrapping post, the wrapping post both ends are provided with the baffle respectively, be provided with insulating division board in the middle of the wrapping post, be provided with the magnet core hole in the wrapping post, be provided with the pin board on two baffles respectively, all be provided with wiring pin and line hole on two pin boards, the wiring pin includes winding pin and ground connection pin, the shield cover is connected with one of them ground connection pin electric property; the utility model discloses an anti-electromagnetic interference's transformer skeleton overcomes the transformer during operation and produces the problem that electromagnetic interference influences the normal work of transformer.

Description

Anti-electromagnetic interference transformer framework

Technical Field

The utility model relates to a transformer skeleton field, more specifically the anti-electromagnetic interference's transformer skeleton that says so.

Background

At present, various small household appliances are widely popularized and applied, and because general small household appliances mostly adopt low-voltage direct current as a power supply, high-frequency transformers are generally used in many small household appliances as voltage-reducing components, and the traditional oil-immersed high-frequency multi-phase transformer is wound into a transformer framework wire slot by an enameled wire or a three-layer insulating wire and then is led into a pin of a transformer framework by the wire slot. However, the transformer has poor interference resistance, and is easily subjected to electromagnetic interference of other electronic devices, so that the normal operation of the transformer is affected. In order to solve the above problems, in the prior art, a copper foil tape is often wrapped outside the transformer winding for isolating electromagnetic interference. However, the copper foil tape is complicated to wind, difficult to maintain, easy to fall off and deform, and hard electromagnetic interference isolation.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti-electromagnetic interference's transformer skeleton overcomes the transformer during operation and produces the problem that electromagnetic interference influences the normal work of transformer.

The utility model provides a technical scheme anti-electromagnetic interference's transformer skeleton, including the skeleton body, skeleton body outside is provided with the shield cover, the shield cover includes two relative settings and fixed connection's first shield cover and second shield cover.

Preferably, the framework body comprises a wrapping post, the two ends of the wrapping post are respectively provided with a baffle, an insulating isolation plate is arranged in the middle of the wrapping post, a magnetic core hole is formed in the wrapping post, the two ends of the wrapping post are respectively provided with a foot guide plate, the two ends of the wrapping post are respectively provided with a wiring pin and a wire passing hole, the wiring pin comprises a winding pin and a grounding pin, and the shielding sleeve is electrically connected with one grounding pin.

Preferably, the length of the pin plate is smaller than the width of the baffle plate, and all side surfaces of the pin plate are located at the inner side position of the side edge of the baffle plate.

Preferably, the first shielding sleeve and the second shielding sleeve wrap the baffle and the outer side position of the winding post from the outside of the baffle.

Preferably, the first shielding sleeve and the second shielding sleeve are respectively provided with a conductive hole, the two conductive holes are connected with a conductive sheet, and the conductive sheet is electrically connected with the grounding pin.

Preferably, the first shielding sleeve and the second shielding sleeve are provided with connecting and fixing mechanisms, each connecting and fixing mechanism comprises a connecting groove and a connecting piece, the connecting grooves and the connecting pieces are respectively arranged on the first shielding sleeve and the second shielding sleeve, the thickness of each connecting piece is smaller than the depth of each connecting groove, connecting holes are formed in the connecting grooves, connecting pins matched with the connecting holes are arranged on the connecting pieces, and the connecting pins are arranged in the connecting holes.

The utility model discloses technical scheme's beneficial effect is:

the utility model discloses technical scheme's an anti-electromagnetic interference's transformer skeleton, the housing parcel is outside at the skeleton body, realizes electromagnetic isolation. The installation and the disassembly are simple to operate and the fixation is reliable.

Drawings

FIG. 1 is a schematic diagram of the framework structure of the anti-electromagnetic interference transformer according to the technical solution of the present invention,

FIG. 2 is a schematic view of the skeleton body structure,

figure 3 is a schematic view of the structure of the shielding sheath,

figure 4 is a schematic view of a first shield sleeve structure,

figure 5 is a schematic view of a second shield sleeve structure,

fig. 6 is a schematic view of the connection fixing mechanism.

Detailed Description

In order to facilitate the understanding of the technical solutions of the present invention by those skilled in the art, the technical solutions of the present invention will now be further described with reference to the drawings attached to the specification.

As shown in fig. 1 to 3, an anti-electromagnetic interference transformer bobbin includes a bobbin body 1, and a shielding sleeve 2 is disposed outside the bobbin body 1. The shielding sleeve 2 is sleeved on the framework of the transformer and the outside of the winding, the material of the shielding sleeve adopts copper, and the electromagnetic isolation is realized when the transformer works. The shielding case 2 includes a first shielding case 21 and a second shielding case 22 which are oppositely disposed and fixedly connected. The design of this structure, the installation and the fixed of the shield sleeve 2 of being convenient for, easy operation, the shield sleeve 2 installation of being convenient for, dismantlement and recycling.

As shown in fig. 2, the bobbin body 1 includes a winding post 11, two ends of the winding post 11 are respectively provided with a baffle 12, an insulating partition plate 13 is arranged in the middle of the winding post 11, and a magnetic core hole 14 is arranged in the winding post 11. The two baffle plates 12 are respectively provided with a pin plate 15, the two pin plates 15 are respectively provided with a wiring pin and a wire passing hole, and the wiring pin comprises a winding pin 16 and a grounding pin 17. The shielding case 2 is electrically connected to one of the grounding pins 17, and the grounding pin 17 is electrically connected to ground. When the transformer adopting the framework body 1 works, the electromagnetic interference generated by the winding on the framework body 1 is absorbed by the shielding sleeve 2, and the electric charge on the shielding sleeve 2 is conveyed to the underground through the grounding pin 17, so that the electromagnetic interference of the shielding sleeve 2 is avoided, and the normal work of the transformer is ensured.

As shown in fig. 1 and 2, the length of the toe board 15 is smaller than the width of the baffle plate 12, and all sides of the toe board 15 are located at the inner side of the side edge of the baffle plate 12. The first shielding sleeve 21 and the second shielding sleeve 22 both wrap the outer side positions of the baffle 12 and the winding post 11 outside the baffle 12. The length, shape and position of the foot plate 15 are set so that the first shielding sleeve 21 and the second shielding sleeve 22 both wrap the outside of the baffle 12 and the winding post 11 outside the baffle 12. The shielding sleeve 2 tightly protects the winding on the winding post 11, and prevents electromagnetic interference generated after the winding is electrified from being leaked from an uncovered area.

As shown in fig. 3, the first shielding sleeve 21 and the second shielding sleeve 22 are respectively provided with a conductive hole 23, and the conductive holes 23 are connected to a conductive plate, which is electrically connected to the grounding pin 17. The conductive holes 23 are provided to facilitate electrical connection between the shielding case 2 and the ground pin 17.

As shown in fig. 4, 5 and 6, the first shielding sleeve 21 and the second shielding sleeve 22 are provided with a connection fixing mechanism. The connection fixing mechanism includes a connection groove 25 and a connection piece 26 respectively provided on the first shield shell 21 and the second shield shell 22. The thickness of the connecting piece 26 is smaller than the depth of the connecting groove 25, and a connecting hole 24 is arranged in the connecting groove 25. The connecting piece 26 is provided with a connecting pin 27 corresponding to the connecting hole 24, and the connecting pin 27 is arranged in the connecting hole 24. The first shielding sleeve 21 and the second shielding sleeve 22 are convenient and quick to mount and fix due to the arrangement of the fixing mechanism, convenient to detach and open, capable of being repeatedly used, high in adaptability and cost-saving.

The technical solution of the present invention is to provide an improved method for manufacturing a semiconductor device, which is characterized in that the method is not limited by the above-mentioned method, and the method is not substantially improved by the method and the device, or the method and the device are directly applied to other occasions without improvement, all within the protection scope of the present invention.

Claims

1. The utility model provides an anti-electromagnetic interference's transformer skeleton, a serial communication port, includes the skeleton body, skeleton body outside is provided with the shield cover, the shield cover includes two relative settings and fixed connection's first shield cover and second shield cover, be provided with on first shield cover and the second shield cover and connect fixed establishment, connect fixed establishment including setting up spread groove and connection piece on first shield cover and second shield cover respectively, connection piece thickness is less than the connection groove degree of depth, be provided with the connecting hole in the spread groove, be provided with the connecting pin that suits with the connecting hole on the connection piece, the connecting pin is arranged in the connecting hole.

2. The transformer bobbin of claim 1, wherein the bobbin body includes a winding post, the winding post has baffles at two ends thereof, an insulating partition plate is disposed in the middle of the winding post, a magnetic core hole is disposed in the winding post, two of the baffles have a lead plate thereon, the two lead plates have a wiring pin and a wiring hole thereon, the wiring pin includes a winding pin and a grounding pin, and the shielding sleeve is electrically connected to one of the grounding pins.

3. The anti-electromagnetic interference transformer bobbin as claimed in claim 2, wherein the length of the pin plate is smaller than the width of the baffle plate, and all side surfaces of the pin plate are located at the inner side of the side edge of the baffle plate.

4. The anti-electromagnetic interference transformer bobbin of claim 2, wherein the first and second shielding sleeves are wrapped around the outside of the shield and the outside of the winding post.

5. The anti-electromagnetic interference transformer bobbin of claim 2, wherein the first shielding sleeve and the second shielding sleeve are respectively provided with a conductive hole, and a conductive piece is connected to the two conductive holes and electrically connected to the grounding pin.