Closed thermal protector

Abstract

The utility model provides a closed thermal protector, and particularly relates to the field of thermal protector production, which comprises a thermal protector body for controlling opening and closing and a closed shell, a lead is arranged at the tail end of the thermal protector body, and the thermal protector body is arranged in the closed shell; the closed shell is a side-opening cavity, a supporting block is arranged at the bottom of the closed shell, and stabilizing columns are symmetrically arranged on the inner side wall of the closed shell. A gap between the thermal protector body and the closed shell is filled with a heat conduction material; a sealing plate is arranged at an opening of the closed shell and located on the inner side of the opening of the closed shell, a sealing cavity is formed between the sealing plate and the side wall of the closed shell, a wire penetrates through a wire hole in the sealing plate, and the interior of the sealing cavity is sealed through a glue injection material. The sealing structure has good sealing performance, so that the waterproof and dustproof performance is improved.

Description

Technical Field

[0001] The utility model belongs to the field of thermal protector production, and in particular relates to a closed thermal protector. Background Art

[0002] The thermal protector is a thermostat made of two different alloys. The closed thermal protector has the characteristics of rapid action, temperature control, large control current and long service life, and is highly favored; the sealing, waterproof and dustproof performance of the closed thermal protector in the existing technology still needs to be further improved.

[0003] The patent with application number CN202021588399.7 discloses an integrally sealed thermal protector. Through the connection between the sealing groove and the sealing block, the thermal protector can work in some special environments. The box body and the cover plate can be better sealed and closed, which improves the sealing type of the thermal protector and prevents external gas or corrosive substances from entering the interior of the thermal protector to avoid malfunctions; but due to the inevitable gaps between the connections of the components, its sealing, waterproof and dustproof performance still needs to be further improved.

[0004] In view of the above shortcomings, a closed thermal protector is now needed, which has good sealing properties and thus improves the waterproof and dustproof performance. Utility Model Content

[0005] The utility model aims to provide a closed thermal protector with good sealing performance, thereby improving the waterproof and dustproof performance.

[0006] The utility model provides the following technical solutions:

[0007] A closed thermal protector comprises a thermal protector body for controlling opening and closing and a closed shell; a wire is arranged at the end of the thermal protector body, and the thermal protector body is arranged in the closed shell;

[0008] The closed shell is a side-opening cavity, a support block is provided at the bottom of the closed shell, and a stabilizing column is symmetrically provided on the inner side wall of the closed shell.

[0009] The gap between the thermal protector body and the closed shell is filled with a heat conductive material;

[0010] A sealing plate is provided at the opening of the closed shell, the sealing plate is located inside the opening of the closed shell, a sealing cavity is formed between the sealing plate and the side wall of the closed shell, the wire passes through the wire hole on the sealing plate, and the sealing cavity is sealed by injection material.

[0011] Preferably, a sealing cofferdam is provided on the inner side wall of the closed shell, and the sealing cofferdam is arranged in a ring shape; the sealing plate is tightly connected to the sealing cofferdam.

[0012] Preferably, a sealing groove matching the sealing cofferdam is provided on the side of the sealing plate, and the end of the sealing cofferdam is embedded in the sealing groove.

[0013] Preferably, a sealing sleeve is provided on the side of the wire hole, and an interference fit is formed between the wire and the sealing sleeve.

[0014] Preferably, the stabilizing column is located between the sealing cofferdam and the bottom of the closed shell; a stabilizing column is provided on each of the four side walls of the closed shell, and a total of four stabilizing columns are provided.

[0015] Preferably, the sealing cofferdam and the inner wall of the closed shell form an angle of 10-15 degrees.

[0016] Preferably, the gap between the sealing cofferdam and the sealing shell is filled with sealant.

[0017] Preferably, the sealing plate is made of polyvinyl chloride; the thermal conductive material is silica gel; the glue injection material is epoxy glue; the sealing shell is made of copper or aluminum; and the sealant is epoxy glue.

[0018] Beneficial effects of the utility model:

[0019] The present invention can greatly improve the sealing performance by combining the sealing shell, the sealing plate and the injection material, thereby improving the waterproof and dustproof performance.

[0020] The present invention accelerates the efficiency of transferring heat from the thermal protector body to the closed shell through the heat-conducting material, can improve the heat dissipation performance, and is beneficial to improving the sensitivity of the thermal protector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall structure of the device;

[0023] Figure 2 This is the overall structural dissection diagram of the device;

[0024] Figure 3 This is the structural diagram of the sealing plate;

[0025] Figure 4 It is a sectional plan view;

[0026] The markings in the figure are: 1. closed shell; 2. thermal protector body; 3. wire; 4. sealing plate; 5. wire hole; 6. sealing sleeve; 7. sealing groove; 8. sealing cofferdam; 9. support block; 10. stabilizing column; 11. thermal conductive material; 12. sealant; 13. sealing cavity; 14. injection material. DETAILED DESCRIPTION Example

[0027] like Figures 1 to 4 A closed thermal protector includes a thermal protector body 2 for controlling opening and closing and a closed shell 1; a wire 3 is arranged at the end of the thermal protector body 2, and the thermal protector body 2 is a finished thermal protector and can function normally alone; in order to improve the sealing performance, the thermal protector body 2 is arranged in the closed shell 1;

[0028] The closed shell 1 is a side-opening cavity, a support block 9 is provided at the bottom of the closed shell 1, and a stabilizing column 10 is symmetrically provided on the inner wall of the closed shell 1. The thermal protector body 2 is stabilized in the closed shell 1 by the support block 9 and the stabilizing column 10, so that a gap is formed between the thermal protector body 2 and the closed shell 1. In order to accelerate the efficiency of heat transfer from the thermal protector body 2 to the closed shell 1, improve the heat dissipation performance, and help improve the sensitivity of the thermal protector, the gap between the thermal protector body 2 and the closed shell 1 is filled with a thermal conductive material 11; the thermal conductive material 11 is made of silica gel; in order to further improve the heat dissipation performance, the closed shell 1 is made of copper or aluminum, and copper with good thermal conductivity is the best; in order to improve the strength, the closed shell 1 is an integrated structure, and the support block 9, the stabilizing column 10 and the closed shell 1 are also an integrated structure;

[0029] A sealing plate 4 is provided at the opening of the closed shell 1. The sealing plate 4 is located at the inner side of the opening of the closed shell 1. A sealing cavity 13 is formed between the sealing plate 4 and the side wall of the closed shell 1. The wire 3 passes through the wire hole 5 on the sealing plate 4. In order to improve the airtightness, the sealing cavity 13 is filled with an injection material. The injection material can be epoxy glue. Of course, other materials can also be used as long as they can be sealed reliably. In order to further improve the sealing performance, a sealing sleeve 6 is provided on the side of the wire hole 5. The wire 3 and the sealing sleeve 6 are interference fit. The sealing sleeve 6 and the sealing plate 4 can adopt an integrated molding structure. The sealing plate 4 is made of polyvinyl chloride. Example

[0030] like Figures 1 to 4 On the basis of Example 1, in order to further improve the sealing performance, a sealing cofferdam 8 is provided on the inner wall of the closed shell 1, and the sealing cofferdam 8 is arranged in a ring shape; the sealing plate 4 is tightly connected to the sealing cofferdam 8. The sealing performance is further improved by the tight connection between the sealing plate 4 and the sealing cofferdam 8; wherein, a sealing groove 7 matching the sealing cofferdam 8 is provided on the side of the sealing plate 4, and the end of the sealing cofferdam 8 is embedded in the sealing groove 7, and the sealing performance can be further improved through the slot structure.

[0031] There is an angle of 10-15 degrees between the sealing cofferdam 8 and the inner wall of the closed shell 1. The specific angle is selected according to actual needs, but the angle should not be too large. If the angle is too large, the opening will become smaller, which will make it difficult for the thermal protector 2 to be embedded in the closed shell 1; the gap between the sealing cofferdam 8 and the closed shell 1 is filled with sealant 12, and the sealant 12 is epoxy glue, which can further improve the airtightness. Among them, the stabilizing column 10 is located between the sealing cofferdam 8 and the bottom of the closed shell 1; a stabilizing column 10 is respectively provided on the four side walls of the closed shell, and there are 4 stabilizing columns 10 in total, which can play a good supporting and stabilizing role. In order to save resources, the discarded product can be recycled, and the closed shell 1 can be disassembled and reused again.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A closed thermal protector, characterized in that: It includes a thermal protector body and a closed shell for controlling opening and closing; a wire is arranged at the end of the thermal protector body, and the thermal protector body is arranged in the closed shell; The closed shell is a side-opening cavity, a support block is provided at the bottom of the closed shell, and a stabilizing column is symmetrically provided on the inner side wall of the closed shell; The gap between the thermal protector body and the closed shell is filled with a heat conductive material; A sealing plate is provided at the opening of the closed shell, the sealing plate is located inside the opening of the closed shell, a sealing cavity is formed between the sealing plate and the side wall of the closed shell, the wire passes through the wire hole on the sealing plate, and the sealing cavity is sealed by injection material.

2. A closed thermal protector according to claim 1, characterized in that: A sealing cofferdam is arranged on the inner side wall of the closed shell, and the sealing cofferdam is arranged in a ring shape; the sealing plate is tightly connected to the sealing cofferdam.

3. A closed thermal protector according to claim 2, characterized in that: A sealing groove matching the sealing cofferdam is arranged on the side of the sealing plate, and the end of the sealing cofferdam is embedded in the sealing groove.

4. A closed thermal protector according to claim 3, characterized in that: A sealing sleeve is arranged on the side of the wire hole, and the wire and the sealing sleeve are interference fit.

5. A closed thermal protector according to claim 4, characterized in that: The stabilizing column is located between the sealing cofferdam and the bottom of the closed shell; a stabilizing column is respectively arranged on the four side walls of the closed shell, and a total of four stabilizing columns are arranged.

6. A closed thermal protector according to claim 5, characterized in that: The sealing cofferdam and the inner wall of the closed shell form an angle of 10-15 degrees.

7. A closed thermal protector according to claim 6, characterized in that: The gap between the sealing cofferdam and the closed shell is filled with sealant.

8. A closed thermal protector according to claim 7, characterized in that: The sealing plate is made of polyvinyl chloride; the thermal conductive material is silicone; the glue injection material is epoxy glue; the sealing shell is made of copper or aluminum; and the sealing glue is epoxy glue.

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