CN217588663U - Common mode filter for reducing parasitic capacitance interference - Google Patents

Abstract

Reduce parasitic capacitance interference's common mode filter, including the iron core, the iron core passes through winding portion and two flange constitutions, and the iron core is I shape or I style of calligraphy form, and the both ends of winding portion are connected with the flange respectively, and the top symmetric connection of flange has two weld parts, is equipped with electrically conductive stranded conductor in the winding portion, and beneficial effect is: the conductive stranded wire is wound and twisted with each other through a plurality of wires, so that the plurality of wires are closely adjacent to each other, the polarities of the induction effects are opposite, the magnetic lines of force are mutually divided, the induction current is mutually divided, the induction voltage cannot be generated, the voltage difference cannot be generated, and the purpose of reducing the parasitic capacitance is achieved.

Description

Common mode filter for reducing parasitic capacitance interference

Technical Field

The utility model relates to a common mode filter technical field, concretely relates to reduce common mode filter of stray capacitance interference.

Background

The common mode filter is mainly composed of two coil assemblies wound on an iron core with the same number of turns. When the common mode current flows through the common mode filter, the two coils can generate a same-direction magnetic field and mutually induce, so that the common mode filter presents high impedance, and the effect of inhibiting the common mode current is achieved.

However, the conventional common mode filter does not deal with the problem of parasitic capacitance in particular, and therefore a common mode filter that reduces parasitic capacitance interference is required.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reduce parasitic capacitance interference's common mode filter to solve the problem that proposes among the above-mentioned background art.

The utility model provides a technical scheme that technical problem adopted is: a common mode filter for reducing parasitic capacitance interference, comprising: the iron core, the iron core passes through wire winding portion and two flange constitutions, the iron core is I shape or I style of calligraphy form, the both ends of wire winding portion are connected with the flange respectively, the top symmetric connection of flange has two weld parts, be equipped with electrically conductive stranded conductor in the wire winding portion.

Preferably, the conductive strand is formed by winding a plurality of first wires and second wires around each other, the conductive strand may be wound in a single layer or a plurality of layers around the winding portion, and the conductive strand is wound around the winding portion of the core in a spiral manner.

Preferably, the first conducting wire and the second conducting wire are both welded on the welding part, and the welding part can be a conducting metal layer or a conducting adhesive, such as silver adhesive.

Preferably, the conductive strand is wound at the winding portion with a distance between turns.

Preferably, the conductive strand is wound on the winding portion in such a manner that the turns are in close contact, i.e., without a gap.

Preferably, the conductive stranded wire can form a plurality of windings on the winding part, and the conductive stranded wire is wound for two circles in the same direction and then wound for one circle in the opposite direction to form a pyramid-like shape.

Preferably, the conductive stranded wire is an insulated wire, and the insulated wire is a flat wire or a round wire.

Preferably, the Iron core may be made of manganese-zinc-Ferrite (Mn-Zn Ferrite), nickel-zinc-Ferrite (Ni-Zn Ferrite), iron Powder core (Iron Powder), iron-nickel-molybdenum (Molypermal Powder), iron-silicon-aluminum (Kool Mu), ferrite (Ferrite) or High magnetic Flux (High Flux) material.

The utility model has the advantages of it is following: the conductive stranded wire is wound and twisted with each other through a plurality of wires, so that the plurality of wires are closely adjacent to each other, the polarities of the induction effects are opposite, the magnetic lines of force are mutually divided, the induction current is mutually divided, the induction voltage cannot be generated, the voltage difference cannot be generated, and the purpose of reducing the parasitic capacitance is achieved.

Drawings

Fig. 1 is a schematic structural diagram of a common mode filter for reducing parasitic capacitance interference according to a preferred embodiment of the present invention;

fig. 2 is a schematic diagram of a conductive stranded wire structure of a common mode filter for reducing parasitic capacitance interference according to a preferred embodiment of the present invention;

fig. 3 is a schematic diagram of a winding structure of the winding portion of the common mode filter for reducing parasitic capacitance interference according to a preferred embodiment of the present invention, in which the windings are spaced apart by a distance;

fig. 4 is a schematic structural diagram of the winding portion for reducing parasitic capacitance interference of the present invention winding the common mode filter in a manner that the windings are in close contact;

fig. 5 is a schematic diagram of a structure of forming a plurality of windings on a winding portion of a conductive stranded wire of a common mode filter for reducing parasitic capacitance interference according to a preferred embodiment of the present invention.

Description of the reference numerals:

1. an iron core; 11. a winding part; 12. a flange; 121. welding the part; 2. conducting stranded wires; 21a, a first conductive line; 21b, a second conductive line; 3. and (4) spacing.

Detailed Description

The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 to 5, the present embodiment provides a building template conveying apparatus with an adjustable spacing and an adjusting method thereof, including an iron core 1, the iron core 1 is composed of a winding portion 11 and two flanges 12, the iron core 1 is I-shaped or I-shaped, two ends of the winding portion 11 are respectively connected to the flanges 12, the top ends of the flanges 12 are symmetrically connected to two welding portions 121, and the winding portion 11 is provided with conductive strands 2.

The first conductive line 21a and the second conductive line 21b are soldered on the soldering portion 121, and the soldering portion 121 may be a conductive metal layer or a conductive adhesive, such as silver adhesive.

The conductive strand 2 is formed by winding a plurality of first wires 21a and second wires 21b, the conductive strand 2 may be wound in a single layer or a plurality of layers on the winding part 11, and the conductive strand 2 is spirally wound on the winding part 11 of the core 1.

The conductive strand 2 is wound around the winding portion 11 in such a manner that the turns are in close contact with each other, i.e., without a gap.

The conductive strand 2 is wound in the winding portion 11 with a space 3 between each turn.

The conductive strand 2 can form a plurality of windings on the winding portion 11, and wind two turns in the same direction and then wind one turn in the opposite direction to form a pyramid-like shape.

The Iron core 1 may be made of manganese-zinc Ferrite (Mn-Zn Ferrite), nickel-zinc Ferrite (Ni-Zn Ferrite), iron Powder core (Iron Powder), iron-nickel-molybdenum (Molypermal Powder), iron-silicon-aluminum (Kool Mu), ferrite (Ferrite) or High magnetic Flux (High Flux).

The conductive strand 2 is an insulated wire, and the insulated wire is a flat wire or a round wire,

the working principle is as follows: the conductive strand 2 is formed by winding the two wires 21a, 21b, but the number of the plurality of wires 21a, 21b is not limited thereto, and can be changed according to the requirement of the related electrical characteristics of the common mode filter, the wire 21 can be an insulating wire (i.e. a layer of non-conductive material is uniformly and hermetically wrapped around the wire 21), the insulating wire can be a flat wire or a round wire, and the end is determined according to the actual requirement. The insulated conductor may be, for example, an enameled wire. In practice, the core 1 is wound around the winding portion 11 manually or automatically by using a related mechanical device, and then the two wires 21 included in the conductive strand 2 are welded to a welding portion 121 of the flange 12 according to requirements, where the welding portion 121 may be a conductive metal layer or a conductive adhesive, such as silver adhesive. The conductive strand 2 is spirally wound around the winding portion 11 of the core 1, the conductive strand 2 is wound in the winding portion 11 with a distance 3 between each turn, and the conductive strand 2 is wound in the winding portion 11 with each turn in close contact, i.e., without a gap. The conductive stranded wire 2 can be wound on the winding part 11 in a single layer or a plurality of layers, the conductive stranded wire 2 can form a plurality of windings (the windings are coils which are arranged and connected according to a certain rule) on the winding part 11, and each winding is wound in two turns in the same direction and then in the opposite direction for one turn to form a pyramid-like shape.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Other parts not described in detail in the present invention belong to the prior art, and are not described herein again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (8)

1. A common mode filter for reducing parasitic capacitance interference, comprising: iron core (1), iron core (1) constitutes through wire winding portion (11) and two flanges (12), iron core (1) is I shape or I style of calligraphy form, the both ends of wire winding portion (11) are connected with flange (12) respectively, the top symmetric connection of flange (12) has two welding parts (121), be equipped with conductive strand wires (2) on wire winding portion (11).

2. The common mode filter for reducing interference of parasitic capacitance according to claim 1, wherein the conductive strands (2) are formed by winding a plurality of first wires (21 a) and second wires (21 b) around each other, the conductive strands (2) are wound in a single layer or a plurality of layers around the winding portion (11), and the conductive strands (2) are wound in a spiral manner around the winding portion (11) of the core (1).

3. The common mode filter for reducing parasitic capacitance interference of claim 2, wherein the first conducting wire (21 a) and the second conducting wire (21 b) are both soldered on the soldering portion (121), and the soldering portion (121) can be a conductive metal layer or a conductive adhesive, such as silver adhesive.

4. The common mode filter for reducing interference of parasitic capacitances according to claim 1, wherein the conductive strands (2) are wound at the winding portion (11) with turns separated by a distance (3).

5. The common mode filter for reducing interference of parasitic capacitance according to claim 1, wherein said conductive strand (2) is wound on said winding portion (11) in such a manner that turns thereof are in close contact, i.e., without a gap.

6. The common mode filter for reducing interference of parasitic capacitance according to claim 1, wherein the conductive strands (2) are formed into a plurality of windings on the winding portion (11), and are wound twice in the same direction and one in the opposite direction to form a pyramid-like shape.

7. The common mode filter for reducing interference of parasitic capacitance according to claim 1, wherein the conductive stranded wire (2) is an insulated wire, and the insulated wire is a flat wire or a round wire.

8. Common-mode filter for reducing parasitic capacitance interference according to claim 1, wherein the Iron core (1) is made of manganese-zinc Ferrite (Mn-Zn Ferrite), nickel-zinc Ferrite (Ni-Zn Ferrite), iron Powder core (Iron Powder), iron-nickel-molybdenum (molybdenum Powder), iron-silicon-aluminum (Kool Mu), ferrite (Ferrite) or High magnetic Flux (High Flux).

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