Tripping device of low-voltage circuit breaker

Abstract

The invention discloses the technical field of circuit breaker tripping devices, and particularly relates to a low-voltage circuit breaker tripping device which comprises a tripping device body and a deformation mechanism arranged on the tripping device body, and the deformation mechanism comprises a heating element and a bimetallic strip. An ultra-thin heat insulation layer is attached to the outer surface of the bimetallic strip, a one-way breathable layer wraps and adheres to the outer surface of the ultra-thin heat insulation layer, a cushioning supporting block is attached to the left side end of the bimetallic strip, a supporting spring is connected to the left side of the cushioning supporting block through a connecting block, and a limiting groove block is connected to the left side end of the supporting spring. A protection structure of the bimetallic strip is formed by the one-way breathable layer and the ultrathin heat insulation layer made of the two-dimensional metal organic framework material, so that the ultrathin heat insulation layer and the one-way breathable layer block heat of the external environment, stable operation of the low-voltage circuit breaker release is ensured, one side of the bimetallic strip is supported by the cushioning supporting block, and the service life of the low-voltage circuit breaker release is prolonged. The collision between the bimetallic strip and the heating element caused by vibration is relieved, and the service life of the bimetallic strip is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breaker releases, and in particular to a low-voltage circuit breaker release device. Background Art

[0002] In the technical field of low-voltage circuit breaker releases, the release is a key device mechanically connected to the circuit breaker. Its main function is to release the holding mechanism when the current exceeds the safety threshold, so that the low-voltage circuit breaker is automatically disconnected to protect the circuit from damage due to overload or short circuit.

[0003] In the prior art, the tripping mechanism is mainly triggered by the deformation of a bimetallic strip, which is a material formed by laminating two different metals and can bend and deform when heated due to the different expansion coefficients of the different metal layers.

[0004] However, when the bimetallic strip is abnormally deformed due to external environmental influences, the operation of the trip device may become unstable. This instability may affect the normal operation of the circuit breaker and reduce its safety and reliability. For example, extreme temperature changes, humidity or other environmental factors may cause the bimetallic strip to deform unexpectedly, thereby erroneously triggering the tripping mechanism when tripping is not required, or failing to respond in time when tripping is required. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above-mentioned existing problem that when the external environment affects the abnormal deformation of the bimetallic strip, the releaser will cause unstable operation, the present invention is proposed.

[0007] Therefore, an object of the present invention is to provide a low voltage circuit breaker tripping device.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: including a release body, a deformation mechanism, which is arranged on the release body, and the deformation mechanism includes a heating element and a bimetallic strip; an ultra-thin thermal insulation layer is bonded to the outer surface of the bimetallic strip, and a one-way breathable layer is wrapped and bonded to the outer surface of the ultra-thin thermal insulation layer; a shock-absorbing support block is bonded to the left end of the bimetallic strip, and a support spring is connected to the left side of the shock-absorbing support block through a connecting block, and the left end of the support spring is connected to a limiting slot block.

[0009] As a preferred solution of the low-voltage circuit breaker tripping device of the present invention, the tripping device body is electrically connected to the heating element, and a bimetallic strip is attached to the side of the heating element.

[0010] As a preferred solution of the low-voltage circuit breaker release device of the present invention, the release body is screwed and installed on the inner side of the low-voltage circuit breaker housing, and the side end of the limit slot block is fixed to the inner wall of the low-voltage circuit breaker housing through a stud.

[0011] As a preferred solution of the low-voltage circuit breaker tripping device of the present invention, a lever is distributed on the right end of the bimetallic strip, and a transmission mechanism is connected to the upper end of the lever.

[0012] As a preferred solution of the low-voltage circuit breaker tripping device of the present invention, the outer surface of the bimetallic strip is provided with an ultra-thin thermal insulation layer of a honeycomb-shaped two-dimensional metal organic skeleton material.

[0013] As a preferred solution of the low-voltage circuit breaker tripping device of the present invention, wherein: a shock-absorbing support block is bonded to the left side of the shock-absorbing support block, and three groups of supporting springs are connected to the inner groove wall of the limiting groove block.

[0014] As a preferred solution of the low-voltage circuit breaker tripping device of the present invention, the shock-absorbing support block, the limit slot block, the support spring and the connecting block constitute a shock-absorbing support structure of the bimetallic strip.

[0015] As a preferred solution of the low-voltage circuit breaker tripping device of the present invention, the one-way air permeable layer and the ultra-thin heat-insulating layer constitute a protective structural layer of the one-way air permeable layer.

[0016] As a preferred solution of the low-voltage circuit breaker tripping device of the present invention, the bimetallic strip is unidirectionally ventilated through the unidirectional ventilating layer.

[0017] As a preferred solution of the low-voltage circuit breaker tripping device of the present invention, the shock-absorbing support structure of the bimetallic strip is used to support the bimetallic strip in contact with the heating element.

[0018] Beneficial effects of the present invention: The present invention utilizes a one-way air permeable layer and an ultra-thin insulation layer of a two-dimensional metal organic skeleton material to form a protective structure of the bimetallic strip, so that the ultra-thin insulation layer and the one-way air permeable layer block the heat from the external environment. At the same time, the one-way air permeable layer ensures that the bimetallic strip is unidirectionally ventilated, thereby avoiding abnormal deformation of the bimetallic strip caused by external temperature, facilitating deformation of the bimetallic strip due to heat generated by the current, ensuring stable operation of the low-voltage circuit breaker releaser, and supporting one side of the bimetallic strip through a shock-absorbing support block to reduce the collision of the bimetallic strip with the heating element caused by vibration, thereby extending the service life of the bimetallic strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 It is a front view of the low-voltage circuit breaker tripping device of the present invention.

[0021] Figure 2 The front cross-sectional structure diagram of the low voltage circuit breaker tripping device of the present invention is shown in FIG. Figure 1 .

[0022] Figure 3 It is a partial front view cross-sectional structural schematic diagram of a low-voltage circuit breaker tripping device of the present invention.

[0023] Figure 4 The front cross-sectional structure diagram of the low voltage circuit breaker tripping device of the present invention is shown in FIG. Figure 2 .

[0024] In the figure: 100, release body; 200, deformation mechanism; 201, heating element; 202, bimetallic strip; 203, ultra-thin insulation layer; 204, one-way air permeable layer; 205, shock-absorbing support block; 206, support spring; 207, limit slot block; 208, low-voltage circuit breaker housing; 209, lever; 210, transmission mechanism; 211, connecting block. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Example 1, reference Figure 1 to Figure 2 , which is the first embodiment of the present invention, provides a low-voltage circuit breaker tripping device, including a tripping device body 100, a deformation mechanism 200, which is arranged on the tripping device body 100, and the deformation mechanism 200 includes a heating element 201 and a bimetallic strip 202; the outer surface of the bimetallic strip 202 is bonded with an ultra-thin thermal insulation layer 203, and the outer surface of the ultra-thin thermal insulation layer 203 is wrapped and bonded with a one-way air permeable layer 204, and the left end of the bimetallic strip 202 is bonded with a shock-absorbing support block 205, and the left side of the shock-absorbing support block 205 is connected to a support spring 206 through a connecting block 211, and the left end of the support spring 206 is connected to a limiting slot block 207. It should be noted that the heat energy of the heating element 201 causes the bimetallic strip 202 to deform, so that the tripping device can respond to the overload condition in the circuit.

[0030] Specifically, the release body 100 is electrically connected to the heating element 201, and a bimetallic strip 202 is attached to the side of the heating element 201. It should be noted that the ultra-thin insulation layer 203 attached to the outer surface of the bimetallic strip 202 and the one-way breathable layer 204 wrapped and bonded to the outer surface together constitute a protective structure of the bimetallic strip 202; the ultra-thin insulation layer 203 adopts a two-dimensional metal organic skeleton material, which has excellent thermal insulation performance, can reduce the influence of the external ambient temperature on the bimetallic strip 202, and prevent abnormal deformation caused by external temperature changes; the one-way breathable layer 204 allows the bimetallic strip 202 to ventilate outward, while preventing external water vapor from entering, protecting the bimetallic strip 202 from erosion by a humid environment.

[0031] The shock-absorbing support block 205 attached to the left end of the bimetallic strip 202 and the support spring 206 and the limit slot block 207 connected by the connecting block 211 constitute a shock-absorbing support structure of the bimetallic strip 202. The function of this structure is to provide stable support when the bimetallic strip 202 is deformed due to the heat of the heating element 201, reduce the collision between the bimetallic strip 202 and the heating element 201 caused by vibration or impact, thereby extending the service life of the bimetallic strip 202 and improving the reliability of the tripping device.

[0032] Furthermore, the release body 100 is screwed and installed on the inner side of the low-voltage circuit breaker housing 208, and the side end of the limit slot block 207 is fixed to the inner wall of the low-voltage circuit breaker housing 208 through a stud. It should be noted that the release body 100 is screwed and installed on the inner side of the low-voltage circuit breaker housing 208, and the side end of the limit slot block 207 is fixed to the inner wall of the low-voltage circuit breaker housing 208 through a stud. This installation method ensures the stability and firmness of the release body 100, so that the release device can work stably in various environments and is not easily displaced or damaged due to mechanical vibration or external force.

[0033] It should also be noted that, in this embodiment, the release body 100 is screwed and installed inside the low-voltage circuit breaker housing 208, and the side end of the limit slot block 207 is fixed to the inner wall of the low-voltage circuit breaker housing 208 through a stud. A lever 209 is distributed on the right end of the bimetallic strip 202, and a transmission mechanism 210 is connected to the upper end of the lever 209.

[0034] Example 2, reference Figures 1 to 3 This embodiment is different from the first embodiment in that: a lever 209 is distributed on the right end of the bimetallic strip 202, and a transmission mechanism 210 is connected to the upper end of the lever 209. It should be noted that the heat generated by the heating element 201 is transferred to the bimetallic strip 202, causing the bimetallic strip 202 to expand and deform due to the heat, thereby squeezing and pushing the lever 209, so that the lever 209 drives the transmission mechanism 210 to release the main contacts of the low-voltage circuit breaker.

[0035] Specifically, the outer surface of the bimetallic strip 202 is provided with an ultra-thin thermal insulation layer 203 of a honeycomb-shaped two-dimensional metal-organic skeleton material. It should be noted that the outer surface of the bimetallic strip 202 is provided with an ultra-thin thermal insulation layer 203 of a honeycomb-shaped two-dimensional metal-organic skeleton material, and the one-way air permeable layer 204 and the ultra-thin thermal insulation layer 203 constitute a protective structural layer of the one-way air permeable layer 204.

[0036] It should be noted that the ultra-thin heat-insulating layer 203 made of honeycomb two-dimensional metal organic skeleton material has excellent heat-insulating performance, reducing the external ambient temperature to affect the expansion and deformation of the bimetallic strip 202. The one-way air-permeable layer 204 is made of one-way air-permeable paper material, which facilitates the bimetallic strip 202 to ventilate outward while preventing external water vapor from entering.

[0037] Furthermore, the bimetallic strip 202 is unidirectionally breathable through the unidirectional breathable layer 204; the unidirectional breathable layer 204 and the ultra-thin insulation layer 203 constitute a protective structural layer of the unidirectional breathable layer 204, and the shock-absorbing support structure of the bimetallic strip 202 is used to support the bimetallic strip 202 in contact with the heating element 201.

[0038] The rest of the structure is the same as that of Example 1.

[0039] It should be noted that the surface of the bimetallic strip 202 in the release body 100 is provided with a one-way air permeable layer 204 and an ultra-thin insulation layer 203 made of a two-dimensional metal organic skeleton material, so that the ultra-thin insulation layer 203 and the one-way air permeable layer 204 block the heat from the external environment. At the same time, the one-way air permeable layer 204 ensures that the bimetallic strip 202 is unidirectionally ventilated, thereby avoiding abnormal deformation of the bimetallic strip 202 caused by external temperature, facilitating the deformation of the bimetallic strip 202 due to the heat generated by the current, thereby ensuring the stable operation of the low-voltage circuit breaker releaser. The bimetallic strip 202 is supported on one side by a shock-absorbing support block 205, thereby reducing the collision between the bimetallic strip 202 and the heating element 201 caused by vibration, thereby extending the service life of the bimetallic strip 202.

[0040] Example 3, reference Figures 1 to 4 This embodiment is different from the above embodiments in that a shock absorbing support block 205 is bonded to the left side of the shock absorbing support block 205 , and three groups of supporting springs 206 are connected to the inner groove wall of the limiting groove block 207 .

[0041] Specifically, the shock absorbing support block 205 , the limiting groove block 207 , the support spring 206 and the connecting block 211 constitute the shock absorbing support structure of the bimetallic strip 202 .

[0042] It should be noted that the shock-absorbing support structure of the bimetallic strip 202 facilitates supporting the bimetallic strip 202 in contact with the heating element 201 , thereby preventing the bimetallic strip 202 from being damaged by external vibrations and collisions, thereby extending the service life of the bimetallic strip 202 .

[0043] The rest of the structure is the same as that of Example 2.

[0044] In summary, the present invention can effectively solve the problem of unstable operation of the releaser caused by abnormal deformation of the bimetallic strip 202 caused by the external environment, avoid abnormal deformation of the bimetallic strip 202 caused by external temperature, facilitate the deformation of the bimetallic strip 202 due to the heat generated by the current, ensure the stable operation of the low-voltage circuit breaker releaser, extend the service life of the bimetallic strip 202, and is suitable for low-voltage circuit breaker releasers.

[0045] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0046] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0047] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A low voltage circuit breaker tripping device, characterized in that: include, Release body (100); A deformation mechanism (200) is arranged on the release body (100), and the deformation mechanism (200) comprises a heating element (201) and a bimetallic strip (202); The outer surface of the bimetallic strip (202) is bonded with an ultra-thin heat-insulating layer (203), and the outer surface of the ultra-thin heat-insulating layer (203) is wrapped and bonded with a one-way air-permeable layer (204). The left end of the bimetallic strip (202) is bonded with a shock-absorbing support block (205), and the left side of the shock-absorbing support block (205) is connected to a support spring (206) through a connecting block (211), and the left end of the support spring (206) is connected to a limiting slot block (207).

2. The low voltage circuit breaker tripping device according to claim 1, characterized in that: The release body (100) is electrically connected to the heating element (201), and a bimetallic strip (202) is attached to the side of the heating element (201).

3. The low voltage circuit breaker tripping device according to claim 2, characterized in that: The release body (100) is screwed and installed on the inner side of the low-voltage circuit breaker housing (208), and the side end of the limit slot block (207) is fixed to the inner side wall of the low-voltage circuit breaker housing (208) through a stud.

4. The low voltage circuit breaker tripping device according to claim 3, characterized in that: A lever (209) is disposed on the right side of the bimetallic strip (202), and a transmission mechanism (210) is connected to the upper end of the lever (209).

5. The low voltage circuit breaker tripping device according to claim 4, characterized in that: An ultra-thin heat-insulating layer (203) made of a honeycomb-shaped two-dimensional metal organic skeleton material is provided on the outer surface of the bimetallic strip (202).

6. The low voltage circuit breaker tripping device according to claim 5, characterized in that: A shock absorbing support block (205) is bonded to the left side of the shock absorbing support block (205), and three groups of supporting springs (206) are connected to the inner groove wall of the limiting groove block (207).

7. The low voltage circuit breaker tripping device according to claim 6, characterized in that: The shock absorbing support block (205), the limiting groove block (207), the support spring (206) and the connecting block (211) constitute a shock absorbing support structure of the bimetallic strip (202).

8. The low voltage circuit breaker tripping device according to claim 7, characterized in that: The one-way air permeable layer (204) and the ultra-thin heat insulation layer (203) constitute a protective structural layer of the one-way air permeable layer (204).

9. The low voltage circuit breaker tripping device according to claim 8, characterized in that: The bimetallic strip (202) is unidirectionally ventilated through the unidirectional ventilating layer (204).

10. The low voltage circuit breaker tripping device according to claim 9, characterized in that: The shock-absorbing support structure of the bimetallic strip (202) is used to support the bimetallic strip (202) in contact with the heating element (201).

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