High-voltage-resistant annular inductor

Abstract

The utility model relates to the technical field of electronic components, in particular to an anti-high-voltage annular inductor which comprises an insulating base, an annular magnetic core, an enameled wire and a shell. The annular magnetic core can be mounted on the mounting ring part and is wound with an enameled wire so as to fix the annular magnetic core in the mounting ring part, the lead end of the enameled wire can penetrate out of the through hole, and the shell can be mounted on the insulating base in a covering manner; according to the annular inductor disclosed by the utility model, the mounting ring part is arranged on the insulating base to position the annular magnetic core, and then the enameled wire is wound to fix the annular magnetic core on the mounting ring part, so that the problem that the annular magnetic core and the insulating base are not easy to position to cause deviation or deflection is solved; the lead ends of the enameled wires penetrate out of the spaced through holes in the insulating base and then are welded to the PCB, the insulating effect of the lead ends is effectively improved, the requirement for high voltage resistance is met, finally, the shell is covered so that automatic piece punching of the patch equipment can be facilitated, and the patch assembling efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic components, in particular to a high voltage resistant annular inductor. Background Art

[0002] A toroidal inductor is an electronic component that mainly includes a toroidal magnetic core and a winding coil wound on the toroidal magnetic core. Existing toroidal inductors use a PCB as a base, and the winding coil is bonded to the PCB with epoxy resin. This design easily causes problems such as the winding coil being offset or skewed; and because the spacing between the three sets of pins is small, product abnormalities or short circuits often occur during testing due to high voltage. Utility Model Content

[0003] To achieve the above-mentioned purpose, the utility model provides a high-voltage resistant annular inductor, comprising an insulating base, an annular magnetic core, an enameled wire and a shell, wherein the insulating base is provided with a mounting ring portion and a plurality of spaced through holes, the annular magnetic core can be mounted on the mounting ring portion and the enameled wire is wound around the annular magnetic core to fix the annular magnetic core in the mounting ring portion, the lead end of the enameled wire can pass through the through hole, and the shell can be covered on the insulating base.

[0004] In some possible embodiments, the mounting ring portion is located at the center of the insulating base and is integrally formed with the insulating base.

[0005] In some possible embodiments, partitions are further provided on two opposite sides of the mounting ring portion, and a wire fixing groove is formed between the partition and the mounting ring portion, and the enameled wire can pass through the wire fixing groove.

[0006] In some possible embodiments, there are three through holes, one of which is formed on the partition plate, and the other two through holes are symmetrically distributed on both sides of the partition plate.

[0007] In some possible embodiments, protruding blocking strips are formed around the insulating base, and the outer shell cover is mounted on the insulating base and located inside the blocking strips.

[0008] In some possible embodiments, at least one heat dissipation hole is formed on the housing.

[0009] In some possible embodiments, there are two heat dissipation holes disposed on two opposite sides of the housing, and the heat dissipation holes are V-shaped.

[0010] Compared with the prior art, the beneficial effect of the utility model is that: the annular inductor of the utility model is provided with a mounting ring portion on the insulating base to position the annular magnetic core, and then the enameled wire is wound to fix the annular magnetic core on the mounting ring portion, so as to eliminate the problem of the annular magnetic core and the insulating base being difficult to position and causing displacement or skewness. The lead ends of the enameled wire pass through the through holes spaced apart on the insulating base and are then welded on the PCB, which effectively improves the insulation effect of the lead ends and meets the requirements of high voltage resistance. Finally, the outer shell is covered to facilitate automatic component mounting by the patch equipment, thereby improving the efficiency of patch assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] 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.

[0012] Figure 1 A three-dimensional structural assembly diagram of a toroidal inductor provided in an embodiment of the utility model;

[0013] Figure 2 A structural cross-sectional view of a toroidal inductor provided in an embodiment of the utility model;

[0014] Figure 3 A three-dimensional structural diagram of the insulating base provided in an embodiment of the utility model.

[0015] Reference numerals: insulating base 10 , mounting ring 11 , through hole 12 , partition 13 , wire fixing groove 14 , blocking bar 15 , annular magnetic core 20 , enameled wire 30 , lead end 31 , housing 40 , heat dissipation hole 41 . DETAILED DESCRIPTION

[0016] 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.

[0017] Reference Figures 1 to 3A high-voltage resistant annular inductor is shown, comprising an insulating base 10, an annular magnetic core 20, an enameled wire 30 and a shell 40, wherein a mounting ring portion 11 is formed on the upper end surface of the insulating base 10, the inner ring of the mounting ring portion 11 is adapted to the annular magnetic core 20, the annular magnetic core 20 can be placed in the mounting ring portion 11, the enameled wire 30 is wound around the inner ring of the annular magnetic core 20 and the outer ring of the mounting ring portion 11 to fix the annular magnetic core 20 in the mounting ring portion 11, and a plurality of spaced through holes 12 are further provided on the insulating base 10, the lead end 31 of the enameled wire 30 can pass through the through hole 12, the spacing between two adjacent through holes 12 can be designed according to actual needs to ensure that the lead end 31 meets the requirement of high voltage resistance, and the shell 40 can be bonded and fixed on the insulating base 10 to protect the annular magnetic core 20 and the enameled wire 30 and facilitate the assembly and production by the patch equipment by grabbing or sucking the shell 40.

[0018] In some possible embodiments, the mounting ring 11 is arranged at the center position of the insulating base 10, and the mounting ring 11 and the insulating base 10 are integrally formed. The annular magnetic core 20 is positioned on the insulating base 10 by the mounting ring 11, which effectively avoids the problem of the annular magnetic core 20 being offset or skewed relative to the insulating base 10, thereby ensuring the consistency of mass production.

[0019] In some possible embodiments, partitions 13 are further provided on opposite sides of the mounting ring 11, and a wire fixing groove 14 is formed between the partition 13 and the mounting ring 11. The enameled wire 30 can pass through the wire fixing groove 14 before or after winding to fix the position of the enameled wire 30 and prevent the enameled wire 30 from slipping.

[0020] In some possible embodiments, a plurality of through holes 12 are provided on the insulating base 10 at positions on opposite sides of the mounting ring portion 11, specifically, three through holes 12 are provided on each side, one of the three through holes 12 is formed on the partition 13 and passes through the partition 13 and the insulating base 10, and the other two are symmetrically distributed on both sides of the partition 13. In this embodiment, there is a partition 13 between two adjacent through holes 12 as insulation isolation, which greatly improves the high voltage resistance between the lead terminals 31.

[0021] In some possible embodiments, protruding baffles 15 are formed on all four sides of the insulating base 10, and the cover of the outer shell 40 is mounted on the insulating base 10 and located inside the baffles 15. The baffles 15 can limit the outer shell 40. Furthermore, adhesive can be coated between the baffles 15 and the outer shell 40 to fix the outer shell 40 to the insulating base 10.

[0022] In some possible embodiments, at least one heat dissipation hole 41 is provided on the shell 40 to ensure good heat dissipation of the annular magnetic core 20 and the enameled wire 30. Furthermore, there are two heat dissipation holes 41 and they are symmetrically distributed on opposite sides of the shell 40. The heat dissipation holes 41 are V-shaped. Such a structure can be used to inject epoxy resin into the position of the through hole 12 on the insulating base 10 after assembly to provide moisture-proof and insulation reinforcement for the position.

[0023] 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 high voltage resistant toroidal inductor, characterized in that: The invention comprises an insulating base (10), an annular magnetic core (20), an enameled wire (30) and an outer shell (40); the insulating base (10) is provided with a mounting ring (11) and a plurality of spaced through holes (12); the annular magnetic core (20) can be mounted on the mounting ring (11) and wound with the enameled wire (30) to fix the annular magnetic core (20) in the mounting ring (11); the lead end (31) of the enameled wire (30) can pass through the through hole (12); and the outer shell (40) can be covered on the insulating base (10).

2. The high voltage resistant toroidal inductor according to claim 1, characterized in that: The mounting ring portion (11) is located at the center of the insulating base (10) and is integrally formed with the insulating base (10).

3. A high voltage resistant toroidal inductor according to claim 1 or 2, characterized in that: The mounting ring portion (11) is further provided with partitions (13) on opposite sides thereof, and a wire fixing groove (14) is formed between the partitions (13) and the mounting ring portion (11), and the enameled wire (30) can pass through the wire fixing groove (14).

4. The high voltage resistant toroidal inductor according to claim 3, characterized in that: There are three through holes (12), one of which is formed on the partition plate (13), and the other two through holes (12) are symmetrically distributed on both sides of the partition plate (13).

5. The high voltage resistant toroidal inductor according to claim 1, characterized in that: The insulating base (10) is formed with protruding blocking strips (15) around its periphery, and the outer shell (40) is mounted on the insulating base (10) and is located inside the blocking strips (15).

6. A high voltage resistant toroidal inductor according to claim 1 or 5, characterized in that: The housing (40) is provided with at least one heat dissipation hole (41).

7. The high voltage resistant toroidal inductor according to claim 6, characterized in that: There are two heat dissipation holes (41) disposed on two opposite sides of the housing (40), and the heat dissipation holes (41) are V-shaped.

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