CN211604838U

CN211604838U - EPC type magnetic core

Info

Publication number: CN211604838U
Application number: CN201922335669.7U
Authority: CN
Inventors: 吴叶锋; 张超
Original assignee: Haining Jingyuan Electronic Co ltd
Current assignee: Guizhou Jingyuan Magnetic Technology Co ltd
Priority date: 2019-12-21
Filing date: 2019-12-21
Publication date: 2020-09-29
Anticipated expiration: 2029-12-21

Abstract

The utility model discloses an EPC type magnetic core, including the base, be located the limit leg of base both sides and be located the center pillar in the middle of the base, center pillar outer wall axial is provided with spiral wire winding groove, the pitch of spiral wire winding groove is 2-3mm, the degree of depth in spiral wire winding groove is 0.8-1.2 mm. The utility model discloses it is stable to have the wire winding when being used as the transformer, and the coil is difficult to the displacement on the center pillar, has prolonged the live time.

Description

EPC type magnetic core

Technical Field

The utility model relates to a magnetic core processing apparatus field, in particular to EPC type magnetic core.

Background

Magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese-zinc ferrite and nickel-zinc ferrite are typical magnetic core materials. The manganese-zinc ferrite has the characteristics of high magnetic permeability and high magnetic flux density and has the characteristic of lower loss. The nickel-zinc ferrite has the characteristics of extremely high resistivity, low magnetic permeability of less than several hundred, and the like. Ferrite cores are used in coils and transformers for various electronic devices.

The EPC type magnetic core is also one type of magnetic core, and comprises a bottom edge, side legs positioned on two sides of the bottom edge and a middle column positioned in the middle of the bottom edge, wherein the two EPC type magnetic cores are arranged on a transformer framework, the side legs of the two EPC type magnetic cores are correspondingly attached, the middle column is correspondingly attached, then copper wires are wound on a copper wire winding machine, and then an insulating adhesive tape is wrapped outside the copper wires, so that the transformer is prepared.

Generally, the center pillar surface all is smooth, and at copper line winding in-process, the pressure that relies on this coiling machine is with copper line winding in the center pillar surface, to some high accuracy coiling machines, every around round copper line, distance between two circles can keep unanimous, and is exactly inseparable side by side between two circles of copper lines promptly, and to the lower coiling machine of precision, overlap takes place easily between the two circles of copper lines on the same ring, and it is especially important to the first round copper line winding of inner ring. In addition, if the tension of the first circle of copper wire winding of the inner ring is small, for the transformer used in some vibration environments, the coil is easy to displace on the magnetic core, and the service life of the transformer is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a EPC type magnetic core has the wire winding when being used as the transformer and stabilizes, and the coil is difficult to the displacement on the center pillar, has prolonged the live time.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the EPC type magnetic core comprises a bottom edge, side legs positioned on two sides of the bottom edge and a middle column positioned in the middle of the bottom edge, and is characterized in that a spiral winding groove is axially formed in the outer wall of the middle column, the pitch of the spiral winding groove is 2-3mm, and the depth of the spiral winding groove is 0.8-1.2 mm.

Adopt above-mentioned technical scheme, copper line coiling machine is when the center pillar to the magnetic core wire winding, and the copper line can block into the spiral wire inslot, and the distance between two circles of copper line of inner circle can keep unanimous from this, and is exactly inseparable side by side between two circles of copper lines promptly, and the coil takes place the displacement easily on the magnetic core, has improved the life of transformer.

Preferably, the center pillar is a round-edged rectangular cylinder, and a spiral winding groove is formed in a round edge portion of the round-edged rectangular cylinder.

By adopting the technical scheme, because the two sides are straight lines with rectangular structures, the difficulty of tapping the spiral groove is high, and therefore, the spiral winding groove is only tapped at the circular edge part, the processing difficulty is reduced, and the cost is reduced.

Preferably, the EPC-type core has a male-female part, a central pillar of the male EPC-type core is provided with an insertion post, and a central pillar of the parent EPC-type core is provided with an insertion ring, and the insertion post and the insertion ring are in insertion fit.

With the above technical solution, firstly, the two spiral winding slots on the center pillar of the core and the center pillar of the core are continuous, and furthermore, although the core and the core are fitted to each other, they are not matched well, so that the core is provided with the insertion post on the center pillar, and the core is provided with the insertion ring matched with the insertion post on the center pillar, thereby improving the matching degree and facilitating the continuity of the butt joint of the spiral winding slots on the two cores.

Preferably, the side legs are provided with chamfers.

By adopting the technical scheme, abrasion is avoided.

Preferably, the side legs are concavely formed into arc-shaped concave surfaces corresponding to the circular side portions of the center pillars.

By adopting the technical scheme, the winding space can be increased, and subsequent winding of the insulating tape can be facilitated.

Preferably, the center pillar is provided with an embedding hole near the edge, and when the two EPC type magnetic cores are matched with each other, an embedding pillar is inserted and connected in the two center pillars.

By adopting the technical scheme, the matching mode for improving the mutual matching degree of the two magnetic cores is another mode.

Preferably, the embedded column is a magnetic core rod.

By adopting the technical scheme, the magnetic effect is prevented from being weakened.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural diagram of an embodiment for showing the inside;

FIG. 3 is a schematic structural view of the embodiment for showing the inside of the vertical sleeve;

FIG. 4 is a position diagram of the embodiment for showing the setting post;

fig. 5 is a schematic structural diagram of another embodiment.

Reference numerals: 1. a bottom edge; 2. side legs; 3. a center pillar; 4. a spiral winding slot; 5. inserting a column; 6. inserting a ring; 7. a concave surface; 8. inlaying a hole; 9. and (5) embedding the column.

Detailed Description

The following is only the preferred embodiment of the present invention, the protection scope is not limited to this embodiment, and all technical solutions belonging to the idea of the present invention should belong to the protection scope of the present invention. It should also be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and such modifications and decorations should also be regarded as the protection scope of the present invention.

The EPC type magnetic core comprises a bottom edge, edge legs positioned on two sides of the bottom edge and a middle column positioned in the middle of the bottom edge, wherein the edge legs are provided with chamfers to avoid abrasion, a spiral winding groove is axially arranged on the outer wall of the middle column, the thread pitch of the spiral winding groove is 2-3mm, and 2.5mm is optimally adopted; the depth of the spiral winding groove is 0.8-1.2mm, and 1mm is preferably adopted. In addition, the side leg forms the arc concave surface corresponding to the circle limit portion indent of center pillar, is favorable to increasing the wire winding space to and make things convenient for subsequent winding insulating tape.

The center pillar of the present embodiment is provided as follows: the center pillar is the round edge rectangle cylinder, and the round edge portion of round edge rectangle cylinder is provided with the spiral wire winding groove, and EPC type magnetic core has the branch of public mother, and public body EPC type magnetic core's center pillar upper surface is provided with inserts the post, and parent EPC type magnetic core's center pillar is provided with inserts the ring, and the slot is the cooperation of pegging graft with inserting the ring. Firstly, because both sides are straight lines with rectangular structures, the difficulty of tapping the spiral groove is high, and therefore, the spiral winding groove is only tapped at the round edge part, the processing difficulty is reduced, and the cost is reduced; in addition, the two spiral winding grooves on the center column of the male EPC type magnetic core and the center column of the female EPC type magnetic core are continuous in a contiguous mode, and although the male EPC type magnetic core and the female EPC type magnetic core are installed on the framework and correspondingly matched with each other, the male EPC type magnetic core and the female EPC type magnetic core are not matched well with each other, therefore, the center column of the male EPC type magnetic core is provided with the inserting column, the center column of the female EPC type magnetic core is provided with the inserting ring matched with the inserting column, therefore, the matching degree is improved, and the continuous butting of the spiral winding grooves on the two parts of magnetic.

The theory of operation is that copper line coiling machine is when the center pillar to the magnetic core wire winding, and the copper line can block into the spiral wire inslot, and the distance between two circles of copper line of inner circle can keep unanimous from this, and is exactly inseparable side by side between two circles of copper line promptly, and the coil takes place the displacement easily on the magnetic core, has improved the life of transformer.

Embodiment two, an EPC type magnetic core, center pillar are close to the edge and have been seted up and have been inlayed the hole, and when two EPC type magnetic cores were matchd each other, the interpolation was provided with one and inlays the post in two center pillars, and it is the magnetic core stick to inlay the post, and this is another kind and improves the cooperation mode of two magnetic core mutual matching degrees.

Claims

1. The EPC type magnetic core comprises a bottom edge, side legs positioned on two sides of the bottom edge and a middle column positioned in the middle of the bottom edge, and is characterized in that a spiral winding groove is axially formed in the outer wall of the middle column, the pitch of the spiral winding groove is 2-3mm, and the depth of the spiral winding groove is 0.8-1.2 mm.

2. An EPC-type magnetic core according to claim 1, wherein said central pillar is a round-edged rectangular cylinder, the round edge of said round-edged rectangular cylinder being provided with a spiral winding groove.

3. An EPC-type magnetic core according to claim 1, characterized in that the EPC-type magnetic core has a male and a female part, the central pillar of the male EPC-type magnetic core is provided with an insertion post, and the central pillar of the female EPC-type magnetic core is provided with an insertion ring, the insertion post and the insertion ring are in insertion fit.

4. An EPC-type magnetic core according to claim 3, characterized in that said legs are provided with chamfers.

5. An EPC-type magnetic core according to claim 4, characterized in that the side legs are concave in correspondence of the circular side portions of the central columns to form arc-shaped concave surfaces.

6. The EPC type magnetic core according to claim 1, wherein the center pillar has a hole near the edge, and when two EPC type magnetic cores are matched, a stud is inserted into the two center pillars.

7. An EPC type magnetic core according to claim 6, characterized in that the studs are magnetic core rods.