Internal insulation structure of intrinsic safety type shell

Abstract

The embodiment of the utility model provides an internal insulation structure of an intrinsic safety type shell, which comprises an insulation plate, a fixing plate and a circuit board, the insulation plate and the shell are arranged at an interval and are fixedly connected to the shell, the fixing plate is fixedly mounted on one side, far away from the shell, of the insulation plate, and the circuit board is arranged between the insulation plate and the shell at an interval and is fixedly connected with the fixing plate; the insulating plate can effectively play an insulating role, and the fixing plate can provide reliable connecting points for all the connecting and fixing pieces, so that the reliability of connection and fixation between all the structures is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical insulation, in particular to an internal insulation structure of an intrinsically safe housing. Background Art

[0002] In the structural design of intrinsically safe products, the internal circuit is required to be completely insulated from the shell, and the creepage distance is generally required to be more than 3mm. The material of the intrinsically safe shell is mostly steel plate, so the internal fixing structure for fixing the circuit board needs to be insulated accordingly. In the existing common structure, plastic screws and plastic gaskets are often used to insulate and fix the circuit board, but the strength of plastic screws is low and they are not resistant to high temperatures, which easily leads to various defects and low reliability. Utility Model Content

[0003] In view of this, an embodiment of the utility model provides an internal insulation structure of an intrinsically safe housing to solve the technical problem of low reliability of existing insulation and fixing structures.

[0004] An internal insulation structure of an intrinsically safe housing provided by an embodiment of the utility model comprises:

[0005] an insulating plate, the insulating plate being spaced apart from the housing and fixedly connected to the housing;

[0006] a fixing plate, the fixing plate being fixedly mounted on a side of the insulating plate away from the housing; and

[0007] A circuit board is disposed between the insulating plate and the housing and is fixedly connected to the fixing plate.

[0008] Optionally, the insulating plate is fixedly connected to the shell via studs.

[0009] Optionally, the circuit board is fixedly connected to the fixing plate via a support column.

[0010] Optionally, the fixing plate is made of galvanized steel plate and is fixedly connected to the insulating plate by steel screws.

[0011] The embodiments of the utility model have the following beneficial effects: the insulating plate is connected to the outer shell, and after the fixing plate is installed on the insulating plate, the circuit board is connected to the fixing plate. The insulating plate can effectively play an insulating role, and the fixing plate can provide reliable connection points for various connecting fixings, thereby ensuring the reliability of the connection and fixation between the various structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0014] Figure 2 A side view of an embodiment of the utility model;

[0015] The numbers in the figure represent:

[0016] 1. Insulation board; 2. Fixing board; 3. Circuit board; 4. Housing; 5. Stud; 6. Support column. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1 , Figure 2 As shown, the embodiment of the utility model provides an internal insulation structure of an intrinsically safe housing, including an insulating plate 1, a fixing plate 2 and a circuit board 3. The insulating plate 1 is spaced apart from the housing 4 and fixedly connected to the housing 4. The fixing plate 2 is fixedly installed on a side of the insulating plate 1 away from the housing 4. The circuit board 3 is spaced apart between the insulating plate 1 and the housing 4 and fixedly connected to the fixing plate 2. Specifically, the insulating plate 1 in the embodiment of the utility model is fixedly connected to the housing 4 through a stud 5, and the circuit board 3 is fixedly connected to the fixing plate 2 through a support column 6.

[0019] The insulating board 1 can be made of bakelite, fiberglass board FR4 or other similar insulating materials, which can effectively play an insulating role; the fixing plate 2 can be made of galvanized steel plate, which is fixedly connected to the insulating board 1 by steel screws, and can provide reliable connection points for each connecting fixture, thereby ensuring the reliability of the connection and fixation between the structures.

[0020] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present invention. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An internal insulation structure of an intrinsically safe housing, characterized in that: include: an insulating plate, the insulating plate being spaced apart from the housing and fixedly connected to the housing; A fixing plate, the fixing plate being fixedly mounted on a side of the insulating plate away from the housing; as well as A circuit board is disposed between the insulating plate and the housing and is fixedly connected to the fixing plate.

2. The internal insulation structure of an intrinsically safe housing according to claim 1, characterized in that: The insulating plate is fixedly connected to the shell via studs.

3. The internal insulation structure of an intrinsically safe housing according to claim 1, characterized in that: The circuit board is fixedly connected to the fixing plate via a supporting column.

4. The internal insulation structure of an intrinsically safe housing according to claim 1, characterized in that: The fixing plate is made of galvanized steel plate and is fixedly connected to the insulating plate by steel screws.

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