KR20200076359A - A insulator - Google Patents

Abstract

The present invention relates to an insulator. According to the present invention, the insulator comprises: a resin insulating material; and a first bracket and a second bracket which are individually buried in opposite ends of the insulator and expose a first fastening hole through exposed holes formed at both ends of the insulating material. The insulating material is provided with second fastening holes communicating with the first fastening holes of each of the first and second brackets so that a counterpart may be fastened.

Description

Insulation insulator {A insulator}

The present invention relates to an insulating insulator, and more particularly to a resin molded insulator.

In general, insulator is defined as a mechanism used to insulate electricity from transmission lines and the like, but products for various purposes such as indoor wiring, circuit breakers, and lightning arresters have been developed. In addition, epoxy insulators for low voltage are widely used in automobiles and solar inverters.

In general, in order to be applied to the automotive or solar field, it is necessary to be able to maintain a stable insulation characteristic with miniaturization.

Resin insulators, typically represented by epoxy insulators, have the advantage of reducing weight, but have relatively low insulation and heat resistance. Therefore, for miniaturization, it is necessary to improve insulation properties and to strengthen heat resistance.

An example of a conventional epoxy insulator is Patent Publication No. 10-2008-0018086 (published on February 27, 2008, epoxy resin insulator).

When explaining the problems of the conventional insulator insulator through the structure of the epoxy insulator disclosed in the above published patent is as follows.

1 is a cross-sectional configuration diagram of a conventional insulator.

Referring to Figure 1, the conventional insulator is formed by molding the resin insulator 2 in a state in which the bracket 1 is inserted at both ends. 3) is provided.

The bracket (1) is used for a solid bond with a counterpart, and is a conductive material, but is not a preferred material when considering the insulating properties of the insulator, but is used for a solid bond of the insulator 2, which is a resin molded body.

In Figure 1, the bracket 1 further includes a detachment preventing portion 4 extending toward the center of the insulator 2 from the end of the bracket 1 so as not to escape from the insulator 2.

Therefore, the distance between the brackets 1 provided at both ends of the insulator 2 is narrower, and the insulation distance, which is the interval between the separation preventing portions 4, is reduced, thereby deteriorating insulation characteristics.

In particular, when the size of the insulator 2 is reduced for miniaturization, the insulation distance, which is an interval between the two separation preventing portions 4, becomes shorter, which seriously degrades the insulation characteristics and is difficult to miniaturize.

In addition, since the molding temperature of 140 to 160°C epoxy is used as the insulator 2, the heat resistance is low and there is a problem in that there are limitations in the application field and the application market because it is relatively weak to impact.

The technical problem to be solved by the present invention is to provide an insulator that is advantageous in miniaturization by securing an insulation distance.

In addition, another technical problem to be solved by the present invention is to provide an insulator that can be applied to various technical fields by securing heat resistance and impact resistance.

In addition, another technical problem to be solved by the present invention is to provide an insulator that prevents the insulator and the bracket from easily detaching and prevents the bracket from being separated from the insulator by a rotational force acting in the process of fastening or separating the counterpart. Is in

Insulator of the present invention for solving the above problems is a resin material insulator, a first bracket through which the first fastening hole is exposed through the exposed holes formed on both ends of the insulator while being inserted into opposite ends of the insulator, respectively, and A second fastener may be provided in the insulator, but a second fastener in communication with the first fastener in each of the first and second fasteners may be provided in the insulator.

According to an embodiment of the present invention, the first bracket and the second bracket may be buried in the insulator to expose only a portion of the first fastening hole and the first fastening hole through the exposed hole.

According to an embodiment of the present invention, the first bracket and the second bracket may have a stepped surface in a vertical direction formed on a peripheral surface of the first fastening hole on a surface facing the insulator.

The step surface may be provided at a boundary where an iron portion and a yaw portion located around the first fastening hole abut.

The stepped surface may be both side surfaces of the arc-protruding portion located around the first fastening hole.

According to an exemplary embodiment of the present invention, the first fastening hole and the second fastening hole are formed with tabs having the same thread spacing, but it is assumed that there is a difference in shrinkage rate due to a difference in materials.

According to an embodiment of the present invention, the insulator may have a liquid crystal crystalline polymer (LCP) as a main component.

The insulator of the present invention allows the fastening holes for fastening of external counterparts to be formed on the whole of the bracket and a part of the insulator, so as to sufficiently secure the insulation distance, which is the distance between the brackets, and to prevent the degradation of insulation properties, which is very advantageous for downsizing. It works.

In addition, the insulating insulator of the present invention is made of a material having a relatively high molding temperature and a high mechanical rigidity, so that it can be applied to more diverse fields by securing heat resistance and impact resistance, thereby securing a new market. It has the effect of contributing to development.

In addition, the insulating insulator of the present invention prevents the bracket and the insulator from being separated from each other during the fastening process of vibrations or external counterparts by providing a stepped surface to prevent the difference between the buried structure, the difference in the physical properties of the fastener, and the rotation, thereby providing a more stable insulator. There is an effect that can provide.

1 is a cross-sectional configuration diagram of a conventional insulator.
2 is a perspective view of an insulating insulator according to a preferred embodiment of the present invention.
3 is a cross-sectional view taken along line AA in FIG. 2.
4 is a perspective view of the bracket shown in FIG. 3.
5 is a perspective view of another embodiment applied to the present invention.

Hereinafter, the insulator of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art, and the embodiments described below may be modified in various other forms, and the present invention The scope is not limited to the examples below. Rather, these examples are provided to make the present invention more faithful and complete and to fully convey the spirit of the present invention to those skilled in the art.

Terms used in this specification are used to describe specific embodiments, and are not intended to limit the present invention. As used herein, singular forms may include plural forms unless the context clearly indicates otherwise. Also, as used herein, “comprise” and/or “comprising” specifies the shapes, numbers, steps, actions, elements, elements and/or the presence of these groups. And does not exclude the presence or addition of one or more other shapes, numbers, actions, elements, elements and/or groups. As used herein, the term “and/or” includes any and all combinations of one or more of the listed items.

Although the terms first, second, etc. are used herein to describe various members, regions, and/or parts, it is obvious that these members, parts, regions, layers, and/or parts are not limited by these terms. . These terms do not imply a specific order, top or bottom, or superiority, and are only used to distinguish one member, region or site from another. Accordingly, the first member, region, or site to be described below may refer to the second member, region, or site without departing from the teachings of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing embodiments of the present invention. In the drawings, deformations of the illustrated shape can be expected, for example, according to manufacturing technology and/or tolerances. Therefore, the embodiments of the present invention should not be interpreted as being limited to a specific shape of the region shown in this specification, but should include, for example, a change in shape caused by manufacturing.

2 is a perspective view of an insulating insulator according to a preferred embodiment of the present invention, and FIG. 3 is an A-A cross-sectional view of FIG. 2.

2 and 3, the insulator of the present invention, the insulator 10, the first bracket 20 and the second bracket 30 buried inward from opposite ends of the insulator 10, and The fastener formed in the insulator 10 between the first bracket 20 and the second bracket 30 is in communication with the fastening holes 21 and 31 formed in each of the first bracket 20 and the second bracket 30. It comprises a ball (11,12).

Hereinafter, the configuration and operation of the insulator of the present invention configured as described above will be described in more detail.

First, after fixing the first bracket 20 and the second bracket 30 in the injection mold, the resin injection material is injected into the mold, and the insulator 10 in which the first bracket 20 and the second bracket 30 are buried Can form. At this time, the fastening holes 11 and 12 of the insulator 10 may be formed by injecting the insulator 10 in a state in which a bolt-shaped insert is respectively coupled to the first bracket 20 and the second bracket 30. The bolt-shaped insert may be formed inside the injection mold as part of the mold.

In the drawing, the structure of the insulator 10 is shown in a cylindrical shape with a central portion protruding, but the shape of the insulator 10 can be designed in various forms as necessary.

The first bracket 20 and the second bracket 30 is to be a structure embedded in the insulator 10. Here, the buried structure or the buried structure is preferably interpreted to mean that the entire surface of the second bracket 30 and a part of the second bracket 30 is not exposed to the outside.

As can be seen in FIG. 2, only a portion of the periphery of the fastening hole 13 is exposed through the exposed hole 14 of the insulator 10 in the central portion of the upper surface of the drawing of the second bracket 30, and other areas They are completely covered with the insulator 10.

Such a structure is a structure capable of preventing the first bracket 20 and the second bracket 30 from being separated from the insulator 10 as much as possible.

On the other hand, as can be seen in FIG. 1 showing a conventional example, the conventional insulator has a structure in which the metal ball is more likely to be detached than the present invention, which is a buried method with an insertion method in which the entire surface of the metal ball is exposed.

As such, the first bracket 20 and the second bracket 30 are buried in the insulator 10 as much as the buried depth t. At this time, the buried depth (t) is not shown in the drawing, but corresponds to the thickness of the bolt head of the insert of the bolt shape, and after removing the insert, the area corresponding to the thickness of the bolt head of the insert is formed with exposed holes 13 and 14, respectively. do.

Through the exposed holes 13 and 14, fastening holes 21 and 31 through the central portions of the first bracket 20 and the second bracket 30 are exposed, respectively.

At this time, the diameter of the exposed holes 13 and 14 is assumed to be larger than the diameter of the fastening holes 21 and 31 of the first and second brackets 20 and 30, respectively.

4 is a perspective view of the first bracket 20. The first bracket 20 and the second bracket 30 have the same shape, and the configuration and operation of the first bracket 20 can be applied to the second bracket 30 as it is.

Referring to Figure 4, the first bracket 20 protrudes from the buried state to the edge of the surface toward the center of the insulator 10 to prevent the first bracket 20 from being separated from the insulator 10 and to secure a solid bonding state. To prevent this, the protruding portion 22 protrudes.

In addition, the surface facing the center of the insulator 10 in a buried state includes an iron portion 23 and a yaw portion 24 adjacent to each other around the fastening hole 21. The convex portion 23 and the concave portion 24 form a stepped surface at the boundary thereof, and the first bracket 20 embedded by the stepped surface axially fastens the fastening hole 21 in a fixed state of the insulator 10 Rotation is prevented.

As described above, the convex portion 23 and the concave portion 24 function to prevent rotation, so that the first bracket 20 is formed of a coupling hole 21 that is generated when coupling an external counterpart to the coupling hole 21 as an axis. Even with the action of the rotating force, it is possible to maintain a fixed state without being separated from the insulator 10.

The anti-rotation function as described above may be provided in various structures, and such examples will be described in more detail later.

One of the characteristic configurations of the present invention is that the coupling of the external counterpart is not made only in the fastening holes 21 and 31 formed in the first bracket 20 or the second bracket 30, but communicates with the fastening holes 21 and 31 It is made up of the fastening holes 11 and 12 formed inside the insulator 10.

Due to the features of this structure, it is possible to sufficiently secure the insulation distance, which is the distance L between the first bracket 20 and the second bracket 30, without changing the fastening depth with the counterpart.

That is, the present invention can use a bracket that is relatively thinner in thickness.

As the insulation distance is sufficiently secured, the present invention has a very advantageous advantage in miniaturization.

This is because the insulation distance can be sufficiently maintained while reducing the overall height of the insulator, and miniaturization is possible while preventing degradation of insulation properties.

The first bracket 20 and the second bracket 30 are made of metal, and the insulator 10 is made of a resin material, and the thread spacing of the fastening holes 21, 31, 11, 12 formed in each is the same. However, due to differences in physical properties between the insulator 10, which is a resin material, and the first bracket 20 and the second bracket 30, which are metals, different aspects may be exhibited when the counterpart is fastened.

This is in an environment in which vibration occurs due to a difference in physical properties such as shrinkage and friction coefficient, so that the present invention can be more robustly coupled with a state product.

The effect of shrinkage is when the injection mold is molded by injecting a resin melt while cooling the first bracket 20, the second bracket 30, and the bolt-shaped insert mold, and insulates the insulator 10. 10) As the contraction is contracted, the degree of close contact with the first bracket 20 and the second bracket 30 can be increased, and when the counterpart is coupled to the fastening holes 11 and 12, the fastening pressure can be further increased.

Normally, bolting between metal materials may cause some loosening in an environment where vibration occurs, but there is a difference in shrinkage, and bonding between a resin material and a metal with a larger friction coefficient does not easily loosen even in a vibrational environment.

As described above, the present invention can obtain an effect of forming a fastening hole for coupling with a counterpart in a bracket and an insulator, and miniaturization and fastening stability according to securing an insulation distance.

The insulator 10 is made of a material having a higher molding temperature than an epoxy other than a conventional epoxy. This is because the molding temperature of the epoxy is 140 to 160°C, so it is difficult to apply in a high temperature environment due to low heat resistance.

Specifically, the insulator 10 may use a liquid crystal polymer (LCP) as a main material. In the case of the known LCP type 1, the molding temperature is 250 to 350°C, which can increase heat resistance.

In addition, a self-reinforcing effect is generated according to the orientation of the rigid molecular ring, and exhibits high mechanical strength.

Therefore, it is possible to improve heat resistance and impact resistance, and is relatively stable in acid, alkali, and solvent, and can be applied to various applications.

5 is another configuration diagram of the first bracket 20 applied to the present invention.

Referring to FIG. 5, the first bracket 20 may include a plurality of arc protrusions 25 protruding in an arc shape along the circumference of the fastening hole 21. The two opposite ends of the arc-protruding portion 25 provide a stepped surface 26 perpendicular to the rotational direction and the reverse direction of the rotational direction, and the stepped surface 26 prevents rotation when fastened with a counterpart. have.

As described above, the present invention provides a step surface for the second bracket 30 and the second bracket 30 with respect to at least a rotation direction and a reverse direction of the rotation direction, thereby preventing the metal bracket from rotating and being separated from the insulator. It can be modified to various structures that can provide a rear surface.

The present invention is not limited to the above embodiments and can be variously modified and modified within a range not departing from the technical gist of the present invention, which is apparent to those skilled in the art to which the present invention pertains. will be.

10: insulator 11, 12, 21, 31: fastener
13, 14: Exposure hole 20: First bracket
22: departure prevention protrusion 23: iron
24: main part 25: arc protruding part
26: step 30: second bracket

Claims (7)

Resin insulators; And
It includes a first bracket and a second bracket that are respectively inserted into opposite ends of the insulator and exposed through the exposed holes formed at both ends of the insulator, respectively.
The insulator is provided with a second fastening hole in communication with the first fastening hole of each of the first bracket and the second bracket, wherein the insulator is fastened to the counterpart. According to claim 1,
The first bracket and the second bracket,
The insulating insulator, which is embedded in the insulator and exposes only a part of the first fastening hole and the peripheral portion of the first fastening hole through the exposure hole. According to claim 1,
The first bracket and the second bracket,
An insulating insulator characterized in that a stepped surface in a vertical direction is formed on a peripheral surface of the first fastening hole on a surface facing the insulator. According to claim 3,
The step surface,
Insulation insulator, characterized in that provided at the boundary between the iron (凸) and the yaw (凹) portion located around the first fastening hole. According to claim 3,
The step surface,
Insulator insulator characterized in that both sides of the arc-protruding portion located around the first fastening hole. According to claim 1,
The first fastening hole and the second fastening hole is formed with a tab having the same thread spacing,
Insulation insulator characterized in that there is a difference in shrinkage rate due to the difference in materials. According to claim 1,
The insulator,
An insulating insulator characterized by having a liquid crystal crystalline polymer (LCP) as a main component.

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