Annular insulating spacer
By designing the bending extension and convex structure of the metal layer, the problem of irregular structure and degradation of the surface of the annular insulating gasket is solved, and better insulation performance and connection firmness are achieved.
Patent Information
- Application Number
- CN202323507845.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-21
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2033-12-21
AI Technical Summary
The existing annular insulating gaskets are prone to harmful irregular structures after surface treatment, resulting in problems such as degradation of insulation performance and separation of metal layers.
The outer and inner peripheral edges of the metal layer are designed to bend and extend and inserted into the body, combining the outer and inner protruding structures to ensure that the metal layer is firmly connected and avoid burrs, thereby improving insulation performance and connection firmness.
It effectively avoids metal layer disengagement and tip discharge, improves insulation performance and connection firmness, and ensures improvement of surface quality and insulation performance.
Smart Images
Figure CN222190378U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of insulating gaskets, in particular to an annular insulating gasket. Background Art
[0002] The existing annular insulating gasket has been widely used in substations, power plants, distribution rooms, laboratories and field live-line operations. Its main body is an annular structure made of insulating materials. Since the upper and lower surfaces of the annular insulating gasket are required to be free of harmful irregular structures, harmful irregular structures refer to one of the following characteristics, that is, defects that destroy uniformity and damage the smooth contour of the surface, such as small holes, cracks, local ridges, cuts, inclusions of conductive foreign matter, folds, gaps, concave and convex ripples and casting marks. In actual production, due to the insulation material itself, the above-mentioned harmful irregular structures are very likely to occur on the upper and lower surfaces of the annular insulating gasket.
[0003] In order to overcome the above-mentioned defects, a metal layer is added on the upper and lower surfaces of the above-mentioned main body, such as the insulating gasket disclosed in the document with Chinese patent authorization announcement number CN202435368U. Since a metal layer is added on the upper and lower surfaces of the main body, it can not only avoid the generation of harmful irregular structures on the upper and lower surfaces, but also ensure that the upper and lower surfaces are insulated through the main body.
[0004] However, after the metal layer is processed, burrs are present on the outer and inner edges. When the annular insulating gasket is squeezed (voltage is present) on the upper and lower surfaces, tip discharge is likely to occur between the burrs on the upper and lower metal layers or between the burrs and the edges of the metal layers on the corresponding sides, thus affecting the insulation performance. In addition, the metal layer is attached to the upper and lower surfaces of the main body, and it is also possible that the metal layer is separated from the main body. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a ring-shaped insulating gasket in view of the current status of the prior art, which has good insulating performance and connection firmness while achieving surface quality.
[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: an annular insulating gasket, comprising an annular body made of useful insulating material and a metal layer arranged on at least one of the upper and lower surfaces of the body, characterized in that: the outer peripheral edge of the metal layer is bent upward along an outer side edge extending to the other surface side of the upper and lower surfaces, the outer side edge is coated on the outer side surface of the body adjacent to the metal layer, and the extended end of the outer side edge is also radially bent inward to form a first positioning edge that can be inserted into the body; at the same time, the inner peripheral edge of the metal layer is bent upward along an inner side edge extending to the other surface side of the upper and lower surfaces, the inner side edge is coated on the inner side surface of the body adjacent to the metal layer, and the extended end of the inner side edge is radially bent outward to form a second positioning edge that can be inserted into the body; and an outer protrusion extending along the circumferential direction of the body is also provided on the outer side surface of the body exposed to the outer side edge, and an inner protrusion extending along the circumferential direction of the body is provided on the inner side surface of the body exposed to the inner side edge.
[0007] In order to further improve the firmness of the connection, the extended end of the first positioning edge is bent into a first hook edge extending toward the metal layer, and the extended end of the second positioning edge is also bent into a second hook edge extending toward the metal layer.
[0008] In the above improved solution, in order to facilitate processing, the outer side and the inner side, the first positioning edge and the second positioning edge, and the first hook edge and the second hook edge are all symmetrically arranged with respect to the center line of the metal layer.
[0009] In the above schemes, the metal layer is provided on the upper and lower surfaces of the body, the outer protrusion is located between the outer sides of the same side, and the inner protrusion is located between the inner sides of the same side, so as to ensure that harmful irregular structures can be avoided on the upper and lower surfaces of the annular insulating gasket.
[0010] Furthermore, in order to increase the creepage distance, there are multiple outer protrusions and inner protrusions along the axial direction, and there is a spacing between axially adjacent outer protrusions and axially adjacent inner protrusions. The spacing ensures that the axially adjacent outer protrusions do not contact each other and the axially adjacent inner protrusions do not contact each other when the upper and lower surfaces of the body are under pressure.
[0011] For the compactness of the overall structure and without affecting the use of the installation occasion, it is better that the outer side is flush with the outer side surface of the body exposed at the outer side, and the inner side is flush with the inner side surface of the body exposed at the inner side.
[0012] Compared with the prior art, since the outer edge and the first positioning edge are extended from the outer edge of the metal layer of the utility model, and the inner edge and the second positioning edge are also extended from the inner edge of the metal layer, the outer edge and the inner edge of the metal layer at this time no longer have burrs, and the structure of the first and second fixed edges inserted into the inside of the main body is utilized so that the processed metal layer is firmly adhered to the main body and will not fall off easily. At the same time, with the help of the inner and outer protrusions, on a main body of the same thickness, a longer creepage distance can be ensured between the outer edge and another metal layer or the outer edge on the same side, so as to ensure that the utility model has better insulation performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a cross-sectional structural schematic diagram of the first embodiment of the utility model;
[0014] Figure 2 for Figure 1 An enlarged schematic diagram of part A in FIG.
[0015] Figure 3 It is a cross-sectional structural schematic diagram of the second embodiment of the utility model;
[0016] Figure 4 for Figure 3 Schematic diagram of the enlarged portion B. DETAILED DESCRIPTION
[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0018] In the following description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be set in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.
[0019] The first embodiment, as Figure 1 and Figure 2As shown, the annular insulating gasket includes an annular main body 1 and a metal layer arranged on the upper surface of the main body, wherein the main body 1 is made of existing insulating materials. Since the main body 1 is designed to be annular, its cross-section can be designed as needed, such as a wedge shape. In the figure, the cross-section of the main body 1 is square. To match the main body 1, the metal layer is also designed to have a ring-shaped structure, and to facilitate the following description, the metal layer on the upper end surface of the main body 1 is called the upper metal layer 2a. The outer peripheral edge of the upper metal layer 2a is bent upward to form an outer edge 21 extending toward the lower surface of the main body 1. The outer edge 21 is coated on the outer surface of the main body 1 adjacent to the upper metal layer, and the outer edge 21 is flush with the outer side surface 11 of the main body 1 exposed at the outer edge; at the same time, the inner peripheral edge of the upper metal layer 2a is bent upward to form an inner side edge 22 extending toward the lower surface of the main body 1. The inner side edge 22 is coated on the inner side surface of the main body adjacent to the upper metal layer 2a, and the inner side edge 22 is flush with the inner side surface 12 of the main body exposed at the inner side edge. Figure 2 In the embodiment, the cross section formed by the upper metal layer 2a, the outer side 21 and the inner side 22 is an inverted U-shaped structure (it can be imagined that when the cross-sectional shape of the body changes, the cross-sectional shape formed by the upper metal layer 2a, the outer side 21 and the inner side 22 will also change), and is wrapped around the upper end of the body 1. At the same time, in order to avoid burrs on the lower end of the outer side 21 and the lower end of the inner side 22, the lower end of the outer side 21 (i.e., the extended end) is also radially bent inward to form a first positioning edge 23 that can be inserted into the body 1. Similarly, the lower end (extended end) of the inner side 22 is radially bent outward to form a second positioning edge 24 that can be inserted into the body. In this way, after the lower ends of the outer side 21 and the inner side 22 are bent, burrs can be eliminated, and the first positioning edge 23 and the second positioning edge 24 can be used to improve the connection firmness between the upper metal layer 2a and the body 1. Figure 2 Furthermore, the extending end of the first positioning edge 23 is bent into a first hook edge 25 extending toward the upper metal layer 2a, and the extending end of the second positioning edge 24 is also bent into a second hook edge 26 extending toward the upper metal layer 2a. In addition, considering the convenience of manufacturing, the above-mentioned outer edge 21 and inner edge 22, the first positioning edge 23 and the second positioning edge 24, the first hook edge 25 and the second hook edge 26 are all symmetrically arranged with respect to the center line of the upper metal layer 2a. Therefore, such a structure is convenient for processing and can further improve the firmness of the connection.
[0020] When the above-mentioned outer edge 21 and inner edge 22 are added, the creepage distance between the upper metal layer 2a and the lower surface of the main body 1 will be reduced under the same thickness of the main body 1. In order to compensate for this defect, an outer protrusion 13 extending along the circumference of the main body is further provided on the outer side surface 11 of the main body exposed at the outer edge 21, and an inner protrusion 14 extending along the circumference of the main body is similarly provided on the inner side surface 12 of the main body exposed at the inner side edge, that is, the inner and outer protrusions are also annular, and their sizes and numbers can be set as needed. In the figure, the inner and outer protrusions are There are two protrusions, and it is preferred that they are distributed at intervals along the axial direction, that is, a certain distance is maintained between axially adjacent outer protrusions 13 and axially adjacent inner protrusions 14. In a specific use environment, when the two end surfaces of the annular insulating gasket are under pressure, the distance can prevent the axially adjacent outer protrusions 13 from contacting each other and the axially adjacent inner protrusions 14 from contacting each other, thereby ensuring that there is a longer creepage distance between the upper and lower surfaces of the annular insulating gasket to improve the insulation performance of the annular insulating gasket.
[0021] The second embodiment, as Figure 3 and Figure 4 As shown, it is different from the above-mentioned first embodiment in that a metal layer is also provided on the lower surface of the main body 1. For the sake of convenience of description, the metal layer on the lower surface of the main body 1 is referred to as the lower metal layer 2b. Similarly, an outer edge 21 extending toward the upper surface of the main body 1 is bent upward along the outer peripheral edge of the lower metal layer 2b, and the outer edge 21 of the lower metal layer 2b is coated on the outer surface of the main body adjacent to the lower metal layer 2b, and similarly, the outer edge 21 of the lower metal layer 2b is flush with the outer side surface 11 of the main body 1 exposed at the outer edge; at the same time, an inner edge 22 extending toward the upper surface of the main body 1 is bent upward along the inner peripheral edge of the lower metal layer 2b, and the inner edge 22 of the lower metal layer 2b is coated on the inner side surface of the main body adjacent to the lower metal layer 2b, and the inner side edge 22 of the lower metal layer 2b is flush with the inner side surface 12 of the main body exposed at the inner side edge.
[0022] Similarly, in order to avoid burrs on the upper end of the outer edge 21 of the lower metal layer 2b and the upper end of the inner edge 22 of the lower metal layer 2b, the upper end of the outer edge 21 of the lower metal layer 2b (i.e., the extended end) is radially bent inward to form a first positioning edge 23 that can be inserted into the main body 1, and the extended end of the first positioning edge 23 is bent to form a first hook edge 25 extending toward the lower metal layer 2b. Similarly, the upper end of the inner edge 22 of the lower metal layer 2b (i.e., the extended end) is radially bent outward to form a second positioning edge 24 that can be inserted into the main body 1, and the extended end of the fourth positioning edge 24 is also bent to form a second hook edge 26 extending toward the lower metal layer 2b. Similarly, the outer edge 21 and the inner edge 22, the first positioning edge 23 and the second positioning edge 24, the first hook edge 25 and the second hook edge 26 extending from the lower metal layer 2b are all symmetrically arranged with respect to the center line of the lower metal layer 2b. This not only facilitates processing, but also avoids the occurrence of burrs between the outer edges in the upper and lower parts. The overall structure is firm and has good insulation performance.
Claims
1. An annular insulating gasket, comprising an annular body made of an insulating material and a metal layer disposed on at least one of the upper and lower surfaces of the body, characterized in that: The outer peripheral edge of the metal layer is bent upward to form an outer edge extending toward the other surface side of the upper and lower surfaces, and the outer edge is coated on the outer side surface of the main body adjacent to the metal layer, and the extended end of the outer edge is also bent radially inward to form a first positioning edge that can be inserted into the main body; at the same time, the inner peripheral edge of the metal layer is bent upward to form an inner edge extending toward the other surface side of the upper and lower surfaces, and the inner edge is coated on the inner side surface of the main body adjacent to the metal layer, and the extended end of the inner edge is bent radially outward to form a second positioning edge that can be inserted into the main body; and an outer protrusion extending along the circumferential direction of the main body is also provided on the outer side surface of the main body exposed to the outer edge, and an inner protrusion extending along the circumferential direction of the main body is provided on the inner side surface of the main body exposed to the inner edge.
2. The annular insulating gasket according to claim 1, characterized in that: The extended end of the first positioning edge is bent to form a first hook edge extending toward the metal layer, and the extended end of the second positioning edge is also bent to form a second hook edge extending toward the metal layer.
3. The annular insulating gasket according to claim 2, characterized in that: The outer side edge and the inner side edge, the first positioning edge and the second positioning edge, and the first hook edge and the second hook edge are all symmetrically arranged with respect to the center line of the metal layer.
4. The annular insulating gasket according to claim 1, 2 or 3, characterized in that: The metal layer is disposed on the upper and lower surfaces of the body, the outer protrusion is located between the outer sides on the same side, and the inner protrusion is located between the inner sides on the same side.
5. The annular insulating gasket according to claim 4, characterized in that: There are multiple outer protrusions and inner protrusions along the axial direction, and there is a spacing between axially adjacent outer protrusions and axially adjacent inner protrusions. The spacing ensures that the axially adjacent outer protrusions and axially adjacent inner protrusions do not contact each other when the upper and lower surfaces of the body are under pressure.
6. The annular insulating gasket according to claim 1, 2 or 3, characterized in that: The outer side edge is flush with the outer side surface of the main body exposed at the outer side edge, and the inner side edge is flush with the inner side surface of the main body exposed at the inner side edge.