An insulator

Abstract

This utility model discloses an insulator comprising an insulating post and an inner core embedded within the insulating post. The inner core includes a copper post, an internal thread on the copper post, a raised strip on the outer periphery of the copper post extending along its axial direction, and a recessed ring on the outer periphery of the copper post. The insulating post includes a first end face and a second end face recessed in the first end face, the second end face surrounding the outer periphery of the copper post end face and being lower than the copper post end face. This utility model provides an insulator that, by setting the second end face of the insulating post to be lower than the end face of the copper post, naturally forms an annular "overflow groove" around the end face of the copper post. During injection molding, any potentially overflowing adhesive is confined within this recessed second end face area and cannot rise to the critical copper post end face, thus ensuring the cleanliness of the copper post end face and the internal thread, eliminating subsequent cleaning processes, and improving production efficiency and product quality.

Description

Technical Field

[0001] This application relates to the field of insulator technology, and more particularly to an insulator. Background Technology

[0002] Insulators, as key components in power equipment, are widely used in various power transmission and distribution lines and electrical equipment. Their main functions are electrical insulation and mechanical fixation. Traditional insulators are typically made by injection molding a metal core (such as copper) with insulating materials such as epoxy resin. The metal core provides mechanical interfaces such as threaded connections, while the outer insulating material ensures electrical safety. In existing technologies, such insulators face a common and challenging problem during injection molding: molten insulating material flows along the gap between the metal core and the mold under high pressure, easily overflowing and covering the end face of the metal core and the threaded holes. This overflow can lead to a series of quality problems: firstly, it contaminates the metal end face, affecting subsequent tight contact with other conductive components, leading to increased contact resistance, overheating, or even malfunction; secondly, the solidified overflow blocks the threaded holes, preventing bolts from being screwed in smoothly, necessitating manual cleaning. Utility Model Content

[0003] To solve the above problems, this technical solution provides an insulator.

[0004] To achieve the above objectives, the technical solution is as follows:

[0005] An insulator includes an insulating post and an inner core embedded within the insulating post; the inner core includes a copper post, an internal thread on the copper post, a protrusion on the outer periphery of the copper post extending along its axial direction, and a recessed ring on the outer periphery of the copper post; the insulating post includes a first end face and a second end face recessed in the first end face, the second end face surrounding the outer periphery of the copper post end face and being lower than the copper post end face.

[0006] In an insulator as described above, the raised strips are semi-circular, and a plurality of the raised strips are spaced apart along the circumference of the copper post.

[0007] In an insulator as described above, the end face of the copper column is flush with the first end face.

[0008] In an insulator as described above, a plurality of the concave rings are spaced apart along the axial direction of the copper column.

[0009] In one type of insulator as described above, the depth of the concave ring is greater than the diameter of the convex strip.

[0010] As described above, in an insulator, the copper post is provided with a rubber-blocking groove adjacent to the end face of the copper post and recessed on the outer periphery of the copper post, wherein the rubber-blocking groove makes the surface connected to the end face of the copper post cylindrical.

[0011] In one type of insulator as described above, the width of the adhesive-blocking groove is greater than the height difference between the first end face and the second end face.

[0012] In one type of insulator as described above, the width of the adhesive-blocking groove is smaller than the width of the concave ring.

[0013] As described above, in an insulator, a nut is fitted onto the copper post, and a nut portion is provided on the insulating post, with the nut corresponding to the nut portion.

[0014] The beneficial effects of this application are:

[0015] This invention provides an insulator in which a ring-shaped "overflow groove" is naturally formed around the copper column end face by setting the second end face of the insulating post to be lower than the end face of the copper post. During injection molding, any overflowing adhesive is confined within this recessed second end face area and cannot rise to the critical copper column end face, thus ensuring the cleanliness of the copper column end face and internal threads, eliminating the need for subsequent cleaning processes, and improving production efficiency and product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0017] Figure 1 This is a schematic diagram of the structure of this application;

[0018] Figure 2 This is a schematic diagram of the inner core structure;

[0019] Figure 3 for Figure 1 A half-section view. Detailed Implementation

[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] An insulator includes an insulating post 1 and an inner core 2 embedded in the insulating post 1; the inner core 2 includes a copper post 21, an internal thread 22 provided on the copper post 21, a protrusion 23 provided on the outer periphery of the copper post 21 and extending along its axial direction, and a recessed ring 24 recessed on the outer periphery of the copper post 21; the insulating post 1 includes a first end face 11 and a second end face 12 recessed on the first end face 11, the second end face 12 surrounding the outer periphery of the end face of the copper post 21 and being lower than the end face of the copper post 21.

[0022] This invention provides an insulator in which a ring-shaped "overflow groove" is naturally formed around the copper column end face by setting the second end face of the insulating post to be lower than the end face of the copper post. During injection molding, any overflowing adhesive is confined within this recessed second end face area and cannot rise to the critical copper column end face, thus ensuring the cleanliness of the copper column end face and internal threads, eliminating the need for subsequent cleaning processes, and improving production efficiency and product quality.

[0023] Furthermore, as a preferred embodiment of this solution and not a limitation, the protrusion 23 is semi-circular, and multiple protrusions 23 are distributed at intervals along the circumference of the copper pillar 21. The semi-circular shape of the protrusions is intended to improve the anti-rotation capability of the inner core when it is wrapped with the insulating pillar, to keep it fixed to the insulating pillar, and to restrict the circumferential rotation of the inner core.

[0024] Furthermore, as a preferred embodiment of this solution and not a limitation, the end face of the copper column 21 is flush with the first end face 11. This makes the mounting end face of the insulator a flat plane, facilitating a close fit with external components, such as terminals and equipment housings, ensuring installation stability and improving electrical contact performance or insulation sealing effect.

[0025] Furthermore, as a preferred embodiment of this solution and not a limitation, the plurality of recessed rings 24 are spaced apart along the axial direction of the copper pillar 21. The multiple recessed rings distributed along the axial direction form multi-layered anchoring points after injection molding, like multiple buckles, thereby locking the inner core in sections axially, greatly enhancing the tensile strength and preventing the inner core from being pulled out of the insulating pillar as a whole.

[0026] Furthermore, as a preferred embodiment of this solution and not a limitation, the depth of the concave ring 24 is greater than the diameter of the convex strip 23. This dimensional relationship ensures that the volume and depth of the mechanical interlocking structure that can be formed by the concave ring are both greater than those of the convex strip. This means that in the structural design, axial tensile strength is prioritized and mainly borne by the concave ring, while the convex strip focuses more on torsional resistance. This clarifies the primary and secondary functions, making the product design more scientific and the overall bonding stronger.

[0027] Furthermore, as a preferred embodiment of this solution and not a limitation, the copper pillar 21 is provided with a glue-blocking groove 25 adjacent to the end face of the copper pillar 21 and recessed on the outer periphery of the copper pillar 21. The glue-blocking groove 25 makes the surface connected to the end face of the copper pillar 21 a cylindrical surface. The glue-blocking groove 25 constitutes another barrier to prevent the glue from flowing to the end face, working in conjunction with the second end face to provide double protection and completely eliminate the risk of glue overflowing to the end face of the copper pillar. The cylindrical surface above the glue-blocking groove ensures the sealing of the inner core end and the mold, reducing the possibility of glue overflow from the source.

[0028] Furthermore, as a preferred embodiment of this solution and not a limitation, the width of the adhesive-blocking groove 25 is greater than the height difference between the first end face 11 and the second end face 12. This dimensional relationship ensures that the adhesive-blocking groove has a sufficiently spacious area to accommodate and trap adhesive that may seep in from between the first and second end faces, guaranteeing the reliable implementation of the adhesive-blocking function and preventing adhesive from spreading to the end faces due to insufficient groove width.

[0029] Furthermore, as a preferred embodiment of this solution and not a limitation, the width of the adhesive-blocking groove 25 is smaller than the width of the concave ring 24. The wider concave ring 24 is mainly used to fill a large amount of adhesive to form a strong mechanical lock; while the narrower adhesive-blocking groove 25 is specialized in blocking the flow of adhesive. This avoids the adhesive-blocking groove being too wide, which would affect the strength of the inner core or mistakenly act as an anchoring function, thus optimizing the structural design.

[0030] Furthermore, as a preferred embodiment of this solution and not a limitation, a nut 3 is fitted onto the copper pillar 21, and a nut portion 13 is provided on the insulating pillar 1, with the nut 3 corresponding to the nut portion 13. The nut is enclosed within the insulating pillar and provides support for the nut portion.

[0031] The above description is only a preferred embodiment of this application and is not intended to limit the scope of implementation of this application. Any other embodiments whose principles and basic structures are the same as or similar to those of this application are within the protection scope of this application.

Claims

1. An insulator, characterized in that: The device includes an insulating post (1) and an inner core (2) embedded in the insulating post (1); the inner core (2) includes a copper post (21), an internal thread (22) on the copper post (21), a protrusion (23) on the outer periphery of the copper post (21) and extending along its axial direction, and a recessed ring (24) on the outer periphery of the copper post (21); the insulating post (1) includes a first end face (11) and a second end face (12) recessed in the first end face (11), the second end face (12) surrounding the outer periphery of the end face of the copper post (21) and being lower than the end face of the copper post (21).

2. An insulator according to claim 1, characterized in that: The protrusions (23) are semi-circular, and multiple protrusions (23) are distributed at intervals along the circumference of the copper pillar (21).

3. An insulator according to claim 1, characterized in that: The end face of the copper pillar (21) is flush with the first end face (11).

4. An insulator according to claim 1, characterized in that: The plurality of the concave rings (24) are spaced apart along the axial direction of the copper pillar (21).

5. An insulator according to claim 1, characterized in that: The depth of the concave ring (24) is greater than the diameter of the convex strip (23).

6. An insulator according to claim 1, characterized in that: The copper column (21) is provided with a glue-blocking groove (25) adjacent to the end face of the copper column (21) and recessed on the outer periphery of the copper column (21). The glue-blocking groove (25) connects the end face of the copper column (21) to a cylindrical surface.

7. An insulator according to claim 6, characterized in that: The width of the adhesive-blocking groove (25) is greater than the height difference between the first end face (11) and the second end face (12).

8. An insulator according to claim 6, characterized in that: The width of the adhesive groove (25) is smaller than the width of the concave ring (24).

9. An insulator according to claim 1, characterized in that: A nut (3) is fitted on the copper column (21), and a nut part (13) is provided on the insulating column (1), with the nut (3) corresponding to the nut part (13).

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