Heating wire structure for bimetallic strip thermal protector

Abstract

The utility model provides a heating wire structure for a bimetallic strip thermal protector, which comprises the following structures: a shell, insulation paper is attached to the inner wall of the shell, and bottom plates are fixedly arranged on the front side and the rear side of the bottom of the inner wall of the insulation paper; compared with an existing heating wire of a plane structure, the heating wire has the advantages that the bending section is arranged in the middle of the heating wire, the bending appearance of the bending section is in a U shape or a V shape, the number of the U shapes or the V shapes can be increased according to the specific product size, and the bending direction of the bending section can be adjusted; the problem of unevenness of the heating wire can be solved, short circuit between the heating wire and a bimetallic strip or a bottom plate of the thermal protector is prevented, and the technical problem of short circuit caused by warping of a flat-structure heating wire of an existing bimetallic strip thermal protector in use is solved.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of bimetal protectors, and particularly relates to a heating wire structure for a bimetal thermal protector. Background Art

[0002] The original heating wire in the bimetal protector is of a flat structure. During long-term use, the heating wire is prone to unevenness, resulting in short circuits between the warped part of the heating wire and the bimetal sheet or the bottom plate of the thermal protector.

[0003] The inventor proposes a heating wire structure for a bimetal thermal protector. By improving the flat heating wire, the structure of the heating wire between the bimetal sheets is modified into a U-shaped or V-shaped structure, and the number of U-shaped or V-shaped structures can be increased or decreased. After modification, the non-flat heating wire can effectively solve the problem of unevenness of the heating wire and prevent short circuits with the bimetal sheet or the bottom plate of the thermal protector. Content of the Utility Model

[0004] 1. Technical problems to be solved by the utility model:

[0005] The utility model provides a heating wire structure for a bimetal thermal protector, which solves the technical problem that the flat heating wire of the existing bimetal thermal protector is warped during use, resulting in short circuits.

[0006] 2. Technical solutions:

[0007] To achieve the above purpose, the technical solution provided by the utility model is: a heating wire structure for a bimetal thermal protector, including the following structures:

[0008] A housing, an insulating paper is attached to the inner wall of the housing, and bottom plates are fixedly provided on the front and back sides of the bottom of the inner wall of the insulating paper.

[0009] A heating element, a bending section is fixedly provided in the middle of the heating element.

[0010] Further, a bimetal sheet is fixedly provided on the top of the inner wall of the housing, and the front and rear ends of the bottom of the bimetal sheet face the tops of the two bottom plates.

[0011] Further, a docking hole is fixedly provided in the middle of the insulating paper, and the docking hole cooperates with the bimetal sheet.

[0012] Further, a static contact is fixedly provided on the top surface of the bottom plate at the front of the housing.

[0013] Further, the end parts on the front and rear sides of the heating element are respectively fixedly connected to the top surfaces of the two bottom plates, and the front and rear ends of the heating element are kept on the same horizontal plane and parallel to the bottom plates.

[0014] Further, the bent section is perpendicular to the bottom plate, the bent section is vertically arranged with the front and rear ends of the heating element, and the outer shape of the bent section can be selected as U-shaped or V-shaped.

[0015] 3. Beneficial effects:

[0016] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0017] The present utility model provides a heating wire structure for a bimetal thermal protector. Compared with the existing flat heating wire, by arranging a bent section in the middle of the heating wire, where the bent shape of the bent section is U-shaped or V-shaped, the number of U-shaped or V-shaped can be increased according to the specific product size, and the bending direction of the bent section can be adjusted, which can solve the problem of uneven heating wire and prevent short circuit with the bimetal or bottom plate of the thermal protector;

[0018] The parts not involved in this device are the same as those in the prior art or can be implemented by using the prior art. Description of the drawings

[0019] Figure 1 is a perspective view of the structure of the present utility model;

[0020] Figure 2 is a half-sectional perspective view of the outer shell structure of the present utility model;

[0021] Figure 3 is a perspective view of the bent section structure of the present utility model;

[0022] Figure 4 is a perspective view of the bent section structure of the present utility model;

[0023] Figure 5 is a perspective view of the bent section structure of the present utility model.

[0024] Reference numerals:

[0025] Outer shell - 1;

[0026] Bimetal - 2;

[0027] Insulating paper - 3; Docking hole - 31;

[0028] Bottom plate - 4; Static contact - 41;

[0029] Heating element - 5; Bent section - 51. Detailed implementation manners

[0030] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

[0031] It should be noted that when an element is referred to as being "fixedly provided on" another element, it can be directly on the other element or there may also be an intermediate element; when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time; the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs; the terms used herein in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] Referring to the attached Figures 1-5 , the present utility model provides a heating wire structure for a bimetal thermal protector, including the following structures:

[0034] A housing 1, an insulating paper 3 is attached to the inner wall of the housing 1, and bottom plates 4 are fixedly provided on the front and rear sides of the bottom of the inner wall of the insulating paper 3.

[0035] A heating element 5, a bent section 51 is fixedly provided in the middle of the heating element 5.

[0036] In this embodiment, as Figure 1 and Figure 2 shown, a bimetal 2 is fixedly provided on the top of the inner wall of the housing 1, and the front and rear ends of the bottom of the bimetal 2 face the tops of the two bottom plates 4.

[0037] In this embodiment, as Figure 2 shown, a docking hole 31 is fixedly provided in the middle of the insulating paper 3, and the docking hole 31 cooperates with the bimetal 2.

[0038] In this embodiment, as Figure 2 shown, a static contact 41 is fixedly provided on the top surface of the bottom plate 4 at the front of the housing 1.

[0039] In this embodiment, as Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the end portions on the front and rear sides of the heating element 5 are fixedly connected to the top surfaces of the two bottom plates 4 respectively, and the front and rear ends of the heating element 5 are kept on the same horizontal plane and parallel to the bottom plate 4.

[0040] The structures of the front and rear ends of the heating element 5 are the conventional structural designs of the existing heating element 5.

[0041] In this embodiment, as Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the bending section 51 is perpendicular to the bottom plate 4, the bending section 51 is vertically arranged with the front and rear ends of the heating element 5, and the outer shape of the bending section 51 can be selected as U-shaped or V-shaped.

[0042] Combined with the structure of the bending section 51 shown in the attached drawings of the specification, in actual application, 1 pair of U-shaped or V-shaped can be adopted, or 2 pairs of U-shaped or V-shaped can be adopted, or 3 pairs of U-shaped or V-shaped can be adopted, specifically depending on the size of the thermal protector.

[0043] At the same time, the perpendicular arrangement of the bending section 51 with the bottom plate 4 or the heating element 5, and the U-shaped or V-shaped of the bending section 51 can be bent upward or downward, and single-direction or double-direction bending treatment can be adopted according to the specific product size.

[0044] Compared with the existing heating wire with a planar structure, in this product, by arranging the bending section 51 in the middle of the heating wire, and the bending outer shape of the bending section 51 is U-shaped or V-shaped, the number of U-shaped or V-shaped can be increased according to the specific product size, and the bending direction of the bending section 51 can be adjusted, so as to solve the problem of the uneven heating wire and prevent short circuit with the bimetallic sheet 2 or the bottom plate 4 of the thermal protector.

[0045] The above-described embodiments only represent certain implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present utility model; it should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model; therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.

Claims

1. A heating wire structure for a bimetallic thermal protector, characterized in that: It includes the following structure: A housing (1), an insulating paper (3) is attached to the inner wall of the housing (1), and bottom plates (4) are fixedly provided on the front and rear sides of the bottom of the inner wall of the insulating paper (3); A heating element (5), a bending section (51) is fixedly provided in the middle of the heating element (5).

2. The heating wire structure for the bimetallic thermal protector according to claim 1, wherein: A bimetallic strip (2) is fixedly provided on the top of the inner wall of the housing (1), and the front and rear ends of the bottom of the bimetallic strip (2) face the tops of the two bottom plates (4).

3. The heating wire structure for the bimetallic thermal protector according to claim 1, characterized in that: A docking hole (31) is fixedly provided in the middle of the insulating paper (3), and the docking hole (31) cooperates with the bimetallic strip (2).

4. The heating wire structure for the bimetallic thermal protector according to claim 1, characterized in that: A static contact (41) is fixedly provided on the top surface of the bottom plate (4) at the front of the housing (1).

5. The heating wire structure for a bimetallic thermal protector according to claim 1, characterized in that: The front and rear end portions of the heating element (5) are respectively fixedly connected to the top surfaces of the two bottom plates (4), and the front and rear ends of the heating element (5) are kept on the same horizontal plane and parallel to the bottom plates (4).

6. The heating wire structure for the bimetallic thermal protector according to claim 1, wherein: The bending section (51) is perpendicular to the bottom plate (4), the bending section (51) is vertically arranged with the front and rear ends of the heating element (5), and the shape of the bending section (51) can be selected as U-shaped or V-shaped.

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