Coupling coil

Abstract

The utility model relates to the technical field of electronic components, in particular to a coupling coil, which comprises a first framework, a second framework and a third framework, a first enameled wire is wound on the first framework, and a first lead end of the first enameled wire extends out from the same side of the first framework; the second framework is in a sleeve shape, a second enameled wire is wound on the second framework, and the first framework can be arranged in the second framework in a penetrating mode; wherein the second framework is provided with a pin part and a through hole capable of allowing the first lead end to penetrate out, and the second lead end of the second enameled wire is wound on the pin part; according to the coupling coil, the first enameled wire is wound on the first framework to form the first winding, the first winding is installed in the second framework, the first lead wire end penetrates out of the through hole, then the second enameled wire is wound on the surface of the second framework to form the second winding, and the second lead wire end bypasses the pin part to be arranged at an interval with the first lead wire end; the first enameled wire and the second enameled wire are physically isolated so as to bear higher voltage, and the reliability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to a coupling coil. Background Art

[0002] A coupling coil is an electronic component that uses the principle of electromagnetic induction to achieve energy transfer between two or more circuits. In a coupling coil, when an alternating current passes through one coil, an alternating magnetic field is generated around it, and this magnetic field affects the other coil, thereby generating an electromotive force in the other coil. This method of magnetic field coupling can achieve signal transmission or energy transfer.

[0003] The coupling coil is usually made of two sections of enameled wire wound on a frame in sequence. However, the two sections of enameled wire are only insulated with insulating tape for protection, which may cause a short circuit or high voltage breakdown due to damage of the insulating tape. Utility Model Content

[0004] In order to achieve the above object, the utility model provides a coupling coil, comprising:

[0005] a first frame, on which a first enameled wire is wound, and a first lead end of the first enameled wire extends from the same side of the first frame;

[0006] The second frame is in the shape of a sleeve, a second enameled wire is wound on the second frame, and the first frame can be inserted into the second frame; wherein,

[0007] The second frame is provided with a pin portion and a through hole through which the first lead end can pass, and the second lead end of the second enameled wire is wound on the pin portion.

[0008] In some possible embodiments, a winding notch is opened on the pin portion, and the second lead end can be wound around the winding notch and extend outward.

[0009] In some possible embodiments, a lead groove is provided on the inner side wall of the second skeleton, and the lead groove extends to pass through the pin portion. The groove depth of the lead groove is greater than the wire diameter of the first enameled wire, and the first lead end can pass through the through hole from the lead groove.

[0010] In some possible embodiments, a shell is further included, and an opening is provided at an upper portion of the shell for accommodating the second skeleton.

[0011] In some possible embodiments, the side surface and / or end surface of the housing is flat.

[0012] In some possible embodiments, the pin portion is arranged on one side of the second skeleton, and a plurality of spaced lead holes are opened on the pin portion, and the first lead end and / or the second lead end can extend from the lead hole along the axial direction of the second skeleton.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the coupling coil of the utility model winds the first enameled wire on the first frame to form a first winding, installs the first winding in the second frame and the first lead end passes through the through hole, and then winds the second enameled wire on the surface of the second frame to form a second winding, and the second lead end bypasses the pin portion to be spaced apart from the first lead end; the first enameled wire and the second enameled wire of the utility model are physically isolated so as to be able to carry a higher voltage and have good reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A three-dimensional structural assembly diagram of a coupling coil provided in one embodiment of the utility model;

[0016] Figure 2 A three-dimensional cross-sectional structure of a coupling coil provided in one embodiment of the utility model;

[0017] Figure 3 This is a schematic structural diagram of a second skeleton provided in another embodiment of the utility model.

[0018] Reference numerals: first skeleton 10 , first enameled wire 11 , first lead end 12 , second skeleton 20 , second enameled wire 21 , second lead end 22 , pin portion 23 , through hole 24 , winding notch 25 , lead groove 26 , lead hole 27 , housing 30 , opening 31 . DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Reference Figure 1 and Figure 2A coupling coil is shown, which includes a first skeleton 10 and a second skeleton 20. The outer surface of the first skeleton 10 is wound with a first enameled wire 11 to form a first winding. The second skeleton 20 is in a sleeve shape. A through hole 24 is opened on the side surface of the second skeleton 20. The first winding can be inserted into the inner circle of the second skeleton 20, and the two first lead ends 12 of the first enameled wire 11 can pass through the through hole 24. After passing through, the two first lead ends 12 are respectively close to the two opposite sides of the through hole 24 to make way for winding the second enameled wire 21; the second enameled wire 21 is wound on the outer surface of the second skeleton 20. The second skeleton 20 is also provided with a pin portion 23. The second lead end 22 of the second enameled wire 21 is wound on the pin portion 23 to ensure that it is spaced apart from the first lead end 12. In this embodiment, the first enameled wire 11 and the second enameled wire 21 are physically isolated by the second skeleton 20, thereby eliminating the problem of short circuit caused by damage to the enameled wire and greatly improving the high voltage resistance and reliability of the coil.

[0021] In some possible embodiments, a winding notch 25 is opened on the pin portion 23, and the second lead end 22 is bent around the outer side of the winding notch 25 to extend radially outward along the second skeleton 20. The coupling coil of this embodiment is a vertical patch structure, and the first lead end 12 passes through the through hole 24 and extends radially outward along the first skeleton 10 to ensure that the first lead end 12 and the second lead end 22 are separated by a certain distance to avoid contact between the two and cause a short circuit.

[0022] In some possible embodiments, a lead groove 26 is provided on the inner side wall of the second skeleton 20, and the lead groove 26 extends radially to penetrate the pin portion 23, and the groove depth of the lead groove 26 is greater than the wire diameter of the first enameled wire 11, and the first lead end 12 extends radially outward in the lead groove 26 and passes through the through hole 24 and the pin portion 23 in sequence. The lead groove 26 designed in this embodiment can make the first lead end 12 give way to the second enameled wire 21 when passing through the through hole 24, thereby avoiding contact between the first lead end 12 and the second enameled wire 21; further, in order to avoid contact between the two, resin can be poured at the lead groove 26 to fix the first lead end 12 and the second enameled wire 21.

[0023] In some possible embodiments, the coupling coil of the present invention also includes a shell 30, and the upper part of the shell 30 is provided with an opening 31 for accommodating the second skeleton 20, that is, after the second winding is wound, it is placed in the shell 30 to protect the winding through the shell 30; further, the side and / or end face of the shell 30 is flat, so that the coupling coil can be assembled in a vertical or horizontal posture.

[0024] In some possible embodiments, reference Figure 3As shown, the pin portion 23 is arranged on one side of the second frame 20, and a plurality of spaced lead holes 27 are opened on the pin portion 23. The first lead end 12 and / or the second lead end 22 can pass through the lead hole 27 and extend along the axial direction of the second frame 20 to adapt to horizontal patch assembly.

[0025] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A coupling coil, characterized in that: include: A first frame (10) on which a first enameled wire (11) is wound, and a first lead end (12) of the first enameled wire (11) extends from the same side of the first frame (10); The second frame (20) is in the shape of a sleeve, a second enameled wire (21) is wound around the second frame (20), and the first frame (10) can be inserted into the second frame (20); wherein, The second frame (20) is provided with a pin portion (23) and a through hole (24) capable of accommodating the first lead end (12) to pass through, and the second lead end (22) of the second enameled wire (21) is wound on the pin portion (23).

2. A coupling coil according to claim 1, characterized in that: The pin portion (23) is provided with a winding notch (25), and the second lead end (22) can be wound around the winding notch (25) and extend outward.

3. A coupling coil according to claim 1, characterized in that: The inner side wall of the second frame (20) is provided with a lead groove (26), and the lead groove (26) extends to penetrate the pin portion (23). The groove depth of the lead groove (26) is greater than the wire diameter of the first enameled wire (11), and the first lead end (12) can pass through the through hole (24) from the lead groove (26).

4. A coupling coil according to claim 1, characterized in that: It also comprises a shell (30), wherein the upper portion of the shell (30) is provided with an opening (31) capable of accommodating the second frame (20) therein.

5. A coupling coil according to claim 4, characterized in that: The side surface and / or end surface of the housing (30) is a plane.

6. A coupling coil according to claim 1, characterized in that: The pin portion (23) is arranged on one side of the second frame (20), and a plurality of spaced lead holes (27) are provided on the pin portion (23). The first lead end (12) and / or the second lead end (22) can extend from the lead hole (27) along the axial direction of the second frame (20).

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