CN209806272U

CN209806272U - Insulating column and electrical equipment

Info

Publication number: CN209806272U
Application number: CN201821900795.1U
Authority: CN
Inventors: 刘晶晶
Original assignee: Suzhou Inovance Technology Co Ltd
Current assignee: Suzhou Inovance Technology Co Ltd
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2019-12-17
Anticipated expiration: 2028-11-19

Abstract

The utility model provides an insulated column and electrical equipment, the insulated column includes the fastener of being made by metal material and the end and the cylinder of being made by insulating material respectively, wherein: the cylinder is provided with a first axial through hole, the first end of the end head is provided with a limiting column, and the diameter of the limiting column is matched with that of the first axial through hole; the end head is also provided with a second axial through hole, and the second axial through hole penetrates through the end head and the limiting column; the limiting column is inserted into the first axial through hole from the second end of the column body, the first end of the fastener is inserted into the second axial through hole from the second end of the end head and penetrates out of the first end of the column body, and the end head and the column body are fixed together; the utility model discloses a split type structure has not only reduced the volume of insulated column, and the insulated column cylinder need not bear moment of flexure and moment of torsion moreover, has prolonged the life of insulated column.

Description

Insulating column and electrical equipment

Technical Field

The utility model relates to a power electronic equipment field, more specifically say, relate to a split type insulated column and electrical equipment.

Background

in the current stage of electrical equipment, large current transmission is mainly realized through a conductive plate, and the conductive plate generally uses a copper bar or an aluminum bar. In order to ensure stable connection, the current-conducting plate needs to be fixed to the mounting base, and reliable insulation between the current-conducting plate and the mounting base needs to be ensured during mounting, the insulating column is very important here, and the insulating column is high in practicability and convenient to mount.

Most of the existing insulating columns are of an integrated structure, as shown in fig. 1 and 2, which are schematic diagrams of the existing insulating columns, a column 11 made of insulating materials is embedded in the middle of two end faces of the column 11, a nut 111 and a screw 112 are respectively embedded in the middle of the two end faces of the column 11, a conductive plate 12 is fixedly connected to the end face of the column 11 where the nut 111 is embedded through an additional screw 13, the end face of the column 11 where the screw 112 is embedded is fixedly connected to a base 10 through an additional nut 14, and the conductive plate 12 is fixed above the base 10 in an insulating manner.

As shown in fig. 3 and 4, which are schematic diagrams of another conventional insulating column, the column 16 is also made of an insulating material, nuts 161 are embedded in the middle of two end faces of the column 16, the conductive plate 17 is connected and fixed to the first end face of the column 16 by the additional screws 18, the second end face of the column 16 is also connected and fixed to the base 15 by the additional screws 18, and the conductive plate 17 is fixed above the base 15 in an insulating manner.

Above-mentioned two kinds of connected modes of current insulating post, because of the cylinder all be insulating material and both ends face need inlay nut or screw rod and come supplementary installation, limited the length design of insulating post cylinder, lead to bulky, can't install and use in some limited places in spatial position. In addition, the column body made of the insulating material has limited material strength, cannot bear bending moment and torque generated during large assembly fastening, and influences the service life of the insulating column.

SUMMERY OF THE UTILITY MODEL

the embodiment of the utility model provides a restricted, the unable problem that can't bear great moment of flexure and moment of torsion of volume and insulating material's cylinder length design to the insulated column among the above-mentioned electrical equipment provides a new insulated column and electrical equipment.

The embodiment of the utility model provides a solve above-mentioned technical problem's technical scheme is, provide an insulating column, include the fastener of making by metal material and the end and the cylinder of making by insulating material respectively, wherein: the cylinder is provided with a first axial through hole, the first end of the end head is provided with a limiting column, the diameter of the limiting column is matched with that of the first axial through hole, and the length of the limiting column is smaller than that of the first axial through hole; the end head is also provided with a second axial through hole, and the second axial through hole penetrates through the end head and the limiting column; the limiting column is inserted into the first axial through hole from the second end of the column body, the first end of the fastener is inserted into the second axial through hole from the second end of the end head and penetrates out of the first end of the column body, and the end head and the column body are fixed together.

Preferably, the fastener comprises a screw and a nut, and the diameter of a screw head of the screw is larger than that of the second axial through hole, and the diameter of a stud of the screw is smaller than that of the second axial through hole; and the stud part of the screw is inserted into the second axial through hole from the second end of the end head, penetrates out of the first end of the cylinder and is in threaded connection with the nut.

Preferably, the outer periphery of the limiting column is provided with an external thread, the first axial through hole comprises a thread section with an internal thread, and the limiting column is in threaded connection with the first axial through hole.

Preferably, the radial section of the column body is regular hexagon.

Preferably, the diameter of the outer periphery of the tip and the cylinder is the same.

Preferably, the second end of the head has a counter bore, and the diameter of the counter bore is greater than the diameter of the head of the screw.

The embodiment of the utility model provides an electrical equipment is still provided, including current conducting plate and base, its characterized in that, electrical equipment still includes as above insulating column, just the current conducting plate passes through insulating column is fixed on the base.

Preferably, the conductive plate has a first fixing hole, the base has a second fixing hole, the cylinder is located between the conductive plate and the base, the tip is located outside the conductive plate, the first end of the fastener is inserted into the second axial through hole from the second end of the tip, and passes through the first fixing hole, the first axial through hole and the second fixing hole in sequence to fix the conductive plate and the base in an insulating manner.

Preferably, the conductive plate is a copper bar or an aluminum bar.

the utility model discloses insulated column and electrical equipment have following beneficial effect: through split type structure, not only reduced the volume of insulated column, the insulated column cylinder need not bear moment of flexure and moment of torsion moreover, has prolonged the life of insulated column.

Drawings

FIG. 1 is a schematic view of a prior art insulating column;

FIG. 2 is a schematic view of a conventional insulating column mounting method;

FIG. 3 is a schematic view of another prior art insulating column;

FIG. 4 is a schematic view of another prior art insulation post mounting method;

Fig. 5 is a schematic view of an insulation column provided by an embodiment of the present invention;

Fig. 6 is an exploded view of an insulation column according to an embodiment of the present invention;

Fig. 7 is a schematic view of an installation manner of the insulation column according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is 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 invention and are not intended to limit the invention.

as shown in fig. 5-7, the embodiment of the present invention provides a schematic structural diagram of an insulating column, which can be applied to the field of power electronic devices, such as frequency converters, inverters, and other electrical devices, and can fix a copper bar or an aluminum bar. The insulating column in this embodiment includes a fastener 21 made of a metallic material (e.g., stainless steel), and a head 22 and a column 23 each made of an insulating material (e.g., unsaturated polyester fiberglass reinforced molding compound, bulk molding compound, etc.), wherein: the cylinder 23 is provided with a first axial through hole 231, the first end of the end head 22 is provided with a limiting column 221, and the diameter of the limiting column 221 is matched with that of the first axial through hole 231; the end head 22 is also provided with a second axial through hole which penetrates through the end head 22 and the limiting column 221; the position-limiting pillar 221 is inserted into the first axial through hole 231 from the second end of the cylinder 23, and the length of the position-limiting pillar 221 is smaller than that of the first axial through hole 231 (i.e. the outer end surface of the position-limiting pillar 221 does not extend out of the first axial through hole 231); the first end of the fastener 21 is inserted into the second axial through hole in the second end surface of the head 22 and passes out of the first end of the cylindrical body 23, thereby fixing the head 22 and the cylindrical body 23 together.

The cylinder 23 of the insulating column only needs to be provided with a through hole in the middle for the fastener 21 to pass through, and nuts or screws do not need to be embedded on the end faces of the two sides of the cylinder 23 to assist in matching installation, so that the length of the insulating column can be shortened, and the installation space is saved.

Specifically, the fastener 21 comprises a screw 211 and a nut 212, and the diameter of the screw head of the screw 211 is larger than that of the second axial through hole, and the diameter of the stud of the screw 211 is smaller than that of the second axial through hole; the threaded shank of the screw 211 is inserted into the second axial through hole from the second end of the head 22 and out of the first end of the cylinder 23, and is threadedly coupled to the nut 212. Therefore, the bending moment and the torque generated during the assembly of the insulating column are all borne by the fastener 21, and the column 23 only needs to play the insulating and supporting roles (the column 23 is made of an insulating material with low strength and cannot bear larger bending moment and torque), so that the loss of the mechanical property of the whole part of the insulating column is avoided, and the service life is prolonged. Of course, in practical applications, other structures such as staples, pins, etc. may be used for the fastening member 21.

The outer circumference of the limiting column 221 may have an external thread, accordingly, the first axial through hole 231 includes a threaded section with an internal thread, the limiting column 221 is screwed into the first axial through hole 231, and the end 22 and the cylinder 23 are pre-positioned and fixed; in this way, relative rotation of the head 22 and the column 23 is avoided, improving stability.

In addition, the radial cross-section of the cylinder 23 may be regular hexagonal, so that when the stopper rod 221 is screwed into the first axial through hole 231 of the cylinder 23, the cylinder 23 may be fixed or twisted using an open-end wrench.

The second end of the tip 22 may be provided with a countersunk hole having a diameter larger than that of the head of the screw 211, so that the nut of the screw 211 can be hidden in the countersunk hole when the screw 211 fixes the insulating column, and the nut of the screw 211 is wrapped around to prevent the screw 211 from contacting other conductive parts.

the embodiment of the present invention further provides an electrical apparatus, which includes a conductive plate 24 (such as a copper bar or an aluminum bar) and a base 20, and the electrical apparatus further includes an insulating column as mentioned in the above embodiment, which fixes the conductive plate 24 on the base 20; the conductive plate 24 has a first fixing hole, the base 20 has a second fixing hole, the column 23 is located between the conductive plate 24 and the base 20, the head 22 is located outside the conductive plate 24, the first end of the fastening member 21 is inserted into the second axial through hole of the head 22 from the second end of the head 22, and passes through the first fixing hole, the first axial through hole 231 and the second fixing hole in sequence to fix the conductive plate 24 and the base 20 in an insulating manner.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An insulating column comprising a fastener made of a metallic material and a head and a column made of an insulating material, respectively, wherein: the cylinder is provided with a first axial through hole, the first end of the end head is provided with a limiting column, the diameter of the limiting column is matched with that of the first axial through hole, and the length of the limiting column is smaller than that of the first axial through hole; the end head is also provided with a second axial through hole, and the second axial through hole penetrates through the end head and the limiting column; the limiting column is inserted into the first axial through hole from the second end of the column body, the first end of the fastener is inserted into the second axial through hole from the second end of the end head and penetrates out of the first end of the column body, and the end head and the column body are fixed together.

2. The insulating column of claim 1, wherein the fastener comprises a screw and a nut, and wherein a screw head of the screw has a diameter greater than a diameter of the second axial through hole and a stud of the screw has a diameter less than the diameter of the second axial through hole; and the stud part of the screw is inserted into the second axial through hole from the second end of the end head, penetrates out of the first end of the cylinder and is in threaded connection with the nut.

3. The insulative post of claim 1, wherein an outer circumference of the standoff post has an external thread, the first axial through-hole includes a threaded segment having an internal thread, and the standoff post is threaded within the first axial through-hole.

4. The insulating column of claim 3, wherein the radial cross-section of the post is regular hexagonal.

5. The insulating column of claim 1, wherein the diameters of the outer peripheries of the stub and the column are the same.

6. the insulating post of claim 2, wherein the second end of the stub has a counter bore, and wherein the diameter of the counter bore is greater than the diameter of the screw head of the screw.

7. An electrical device comprising an electrically conductive plate and a base, characterized in that the electrical device further comprises an insulating post according to any one of claims 1-6, and the electrically conductive plate is fixed to the base by the insulating post.

8. The electrical apparatus of claim 7, wherein the conductive plate has a first fixing hole, the base has a second fixing hole, the post is located between the conductive plate and the base, the tip is located outside the conductive plate, and the first end of the fastening member is inserted into the second axial through hole from the second end of the tip and passes through the first fixing hole, the first axial through hole, and the second fixing hole in sequence to fix the conductive plate and the base in an insulating manner.

9. The electrical apparatus of claim 7, wherein the conductive plate is a copper bar or an aluminum bar.