KR101870149B1

KR101870149B1 - Core cover for bobbin

Info

Publication number: KR101870149B1
Application number: KR1020170106201A
Authority: KR
Inventors: 박종원
Original assignee: 박종원
Priority date: 2017-08-22
Filing date: 2017-08-22
Publication date: 2018-06-25

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core cover for a bobbin, and more particularly, to a core cover for a bobbin having a bobbin core having an integral structure formed by covering an insulating layer with an integral cover, And a core cover for the core.
To this end, in the core cover for a bobbin according to the present invention, a cover member for insulation is overlaid on the outer surface of a cylindrical magnetic core having a hole in the center, the cover member is made of a plastic material having an integral body, So as to completely close the inside thereof in a state of being in close contact with the outer surface thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to a core cover for a bobbin having an integral structure,

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a core cover for a bobbin having an integral structure, and more particularly, to a core cover for a bobbin having an integral structure in which a cover for forming an insulating layer of a bobbin core has an integral structure.

In general, a high-frequency transformer is used for various types of electric or electronic circuit devices, and comprises a core, a bobbin, and a coil wound around the bobbin.

That is, on the outer surface of the magnetic core having a substantially cylindrical shape, a cover having a shape corresponding thereto is mounted to form a bobbin. Then, a coil such as a copper wire for current flow is wound around the outer circumferential surface of the bobbin, The magnetic field is formed through the current flow.

1, a conventional bobbin includes a cover body 2a formed through plastic injection molding so as to have a predetermined space corresponding to the core 1, (2) and a cover (2b) made of a plurality of members.

Alternatively, the outer circumferential surface of the core is insulated through an insulating material such as a thin film, and then coated with a coating material such as urethane to form an insulating layer (not shown).

However, in the case of a bobbin having an electron configuration, since the cover in which the core is embedded is constituted by a plurality of members, the respective members must be manufactured separately, thereby increasing the manufacturing cost and complicating the process. In addition, since the cover is packed and transported separately from the core, packaging, transportation, storage and the like are difficult. In addition, since the core is embedded in the cover body and then the cover is fixed by manual operation, The problem of deteriorating efficiency has occurred.

In addition, since the core and the cover are assembled, the outer diameter and the height are increased due to the assembly space. On the contrary, the inner diameter is reduced due to the assembly space and the winding is difficult. And the size becomes irregular, and the durability and the insulation of the product are lowered as the parts are increased.

Further, in the case of the bobbin having the latter structure, there is a problem in that the cost is increased due to repeated coatings in forming the coating layer on the outer circumferential surface of the core and the L value is decreased due to shrinkage in the course of drying the coating liquid Problems such as an increase in shot defects due to coating irregularities at the corners of the cores, and difficulty in automatic winding operation through an automatic winding machine.

Korean Registered Utility Model No. 20-0218865

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a bobbin core in which an insulating layer is integrally formed with a cover, And to provide a core cover for a bobbin having an integral structure capable of manufacturing an excellent bobbin.

According to an aspect of the present invention, there is provided a core cover for a bobbin according to the present invention, wherein a cover member for insulation is overlaid on an outer surface of a cylindrical magnetic core having a hole at the center, And is configured to completely seal the inside in a state in which it is in close contact with its outer surface in a shape corresponding to the core.

Preferably, each of the upper and lower surfaces of the cover member is formed with a circular groove so as to correspond to arbitrary contraction or expansion of the cover member due to an external environment.

More preferably, the outer circumferential surface of the cover member is formed with a plurality of vertical grooves formed at predetermined intervals so as to correspond to arbitrary contraction or expansion of the cover member due to an external environment.

Preferably, at a certain point of the cover member, a protruding portion protruding from the inner and outer circumferential surfaces and the upper and lower surfaces of the body at a predetermined height is formed. In the protruding portion, And the partition wall is selectively mountable through the guide groove provided on the inner side of each protrusion.

According to the present invention as described above, since the cover member for forming the insulating layer outside the core is formed as an integral structure in the bobbin on which the coil provided on the predetermined transformer is wound, It is possible to simplify the manufacturing process of the bobbin to improve the productivity and reduce the manufacturing cost.

In addition, it is possible to provide a bobbin excellent in insulation property to the core through a cover member which completely seals the inside thereof with a single member, and is excellent in durability with little breakage or deformation.

1 is an exploded perspective view showing a configuration of a bobbin to which a conventional core cover is applied,
FIG. 2 is a perspective view showing a configuration of a bobbin manufactured through a core cover for a bobbin having an integral structure according to the present invention,
3 is a front sectional view showing the configuration of a bobbin manufactured through a core cover for a bobbin having an integral structure according to the present invention,
FIG. 4 is a perspective view showing a configuration of a bobbin manufactured through a core cover for a bobbin having an integral structure according to a modification of the present invention;
5 is a perspective view showing a configuration of a bobbin manufactured through a core cover for a bobbin having an integral structure according to another modification of the present invention.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bobbin for a bobbin, FIG. 4 is a perspective view showing the configuration of a bobbin manufactured through a core cover for a bobbin having an integral structure according to a modification of the present invention, and FIG. 5 is a perspective view showing a bobbin core having an integral structure according to another modification of the present invention. Fig. 3 is a perspective view showing a configuration of a bobbin manufactured through a cover; Fig.

First, the core cover for a bobbin having an integral structure according to the present invention is formed by integrating the cover member 20 for forming the insulating layer of the magnetic core 10 in the bobbin 50, thereby simplifying the manufacturing process The bobbin having excellent insulation and durability can be provided while increasing the productivity.

For this purpose, the core cover for a bobbin having an integral structure according to the present invention is a bobbin 50 in which coils (not shown) are wound in various standards according to the use of the transformer, And a cover member 20 for forming an insulating layer on an outer surface of the core 10 is formed of a plastic material having an integral body.

The cover member 20 is formed in a shape corresponding to the core 10 and is in close contact with the outer surface of the core 10 to completely seal the inside of the core 10 to form an insulating layer.

In the structure in which the cover member 20 is overlaid on the core 10, the cover member 20 is inserted through the mold while the core 10 is positioned between the upper and lower molds having a specific structure The cover member 20 having the integral structure forms the bobbin 50 in a state in which the core 10 is embedded, as the constituent synthetic resin material is compression-molded into a specific shape.

4, each of the circular grooves 22 is recessed and formed at a predetermined depth so as to have a substantially circular shape on the upper surface and the lower surface of the cover member 20 forming the substantially cylindrical bobbin 50, The bobbin 50 is prevented from being deformed or damaged arbitrarily in response to contraction or expansion of the cover member 20 due to the external environment.

The circular grooves 22 may have a plurality of enlarged grooves 22a protruding from the outer circumferential surface of the circular grooves 22 in a substantially semicircular shape at regular intervals.

In addition, a plurality of vertical grooves 24 are formed by being formed at predetermined intervals in a predetermined depth along the outer circumferential surface of the cover member 20 forming the substantially cylindrical bobbin 50, So that it can cope with arbitrary shrinkage or expansion of the cover member 20.

In the core cover for a bobbin having an integral structure according to the present invention, a protruding portion 30 is formed at a predetermined point on the inner circumferential surface, the outer circumferential surface, the upper surface and the lower surface of the cover member 20 at a predetermined height, The protrusions 30 are formed at positions facing each other so that the pair of protrusions 30 are mutually 180 °.

A guide groove 32 is formed along the vertical direction inside each protrusion 30 so that the partition wall 40 having a substantially rectangular plate shape can be selectively mounted and detached, So that the coils can be wound at different winding ratios.

5, a plurality of auxiliary protrusions 34 are projected in the longitudinal direction on the outer circumferential surface of the cover member 20 at regular intervals so that the coils having various winding ratios can be stably So that it can be used.

Next, the operation of the present invention as described above will be described with reference to the drawings.

Since the bobbin 50 on which the predetermined coil is wound is formed through the cover member 20 having the integral structure that surrounds the outside of the core 10 through the core cover for bobbin having the integral structure according to the present invention , The inside of the cover member (20) in which the core (10) is embedded is completely sealed, so that excellent insulation can be exhibited.

A circular groove 22 is formed on the top and bottom surfaces of the cover member 20 so as to have a substantially circular shape and a plurality of vertical grooves 24 are formed along the outer circumferential surface of the cover member 20, Is capable of coping with arbitrary shrinkage and expansion of the plastic material due to heat, pressure, etc. from the outside, so that the durability of the bobbin 50 can be improved while preventing arbitrary deformation or breakage of the bobbin 50.

A coil can be wound on one bobbin 50 at various winding ratios through a protrusion 30 formed on the outer surface of the cover member 20 constituting the bobbin 50 and a plurality of auxiliary protrusions 34, The utilization of the bobbin 50 can be increased.

That is, since the bobbin 50 manufactured through the above-described structure is manufactured as an integral structure without a clearance between the cover member 20 and the core 10, a separate assembly process is not required, And the cover member 20, it is possible to greatly reduce the cost of logistics due to packaging, transportation, storage and the like.

In addition, the core 10 can be prevented from being damaged by the integrated structure of the core 10 and the cover member 20, and the inner diameter of the bobbin 50 can be reduced The winding can be facilitated and the core value can be reduced through the increase in the number of windings and the space can be advantageously secured as the height and outer diameter of the bobbin 50 are reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

10: core, 20: cover member,
22: circular groove, 22a: extended groove,
24: vertical groove, 30: projection,
32: guide groove, 34: auxiliary projection,
40: bulkhead, 50: bobbin.

Claims

A cover member for insulation is overlaid on an outer surface of a cylindrical magnetic core having a hole at the center,
Wherein the cover member is made of a plastic material having an integral body and is configured to completely seal the inside of the cover in a state of being in contact with the outer surface in a shape corresponding to the core,
Wherein a plurality of vertical grooves are formed on the outer circumferential surface of the cover member so as to correspond to arbitrary contraction or expansion of the cover member due to an external environment at a predetermined interval.

The method according to claim 1,
Wherein the upper and lower surfaces of the cover member are respectively formed with a circular groove formed to have a predetermined depth so as to correspond to arbitrary contraction or expansion of the cover member due to the external environment.

delete

The method according to claim 1,
A protruding portion protruding from the inner and outer circumferential surfaces and the upper and lower surfaces of the body is formed at a certain point of the cover member,
Wherein the protruding portions are configured to be capable of selectively mounting a partition wall through a guide groove provided inside of each of the protruding portions in a state where a pair of protruding portions are formed at positions opposed to each other so as to form an angle of 180 ° with each other. .