An overload switch with manual reset

Abstract

This utility model discloses an overload switch with manual reset, including an upper cover with a lower cover snapped onto it. A movable reset button is located inside both the upper and lower covers, penetrating the lower cover. An output conductive plate and an input conductive plate are respectively located on either side of the reset button. Ribs fixing the positions of the output and input conductive plates are located inside the lower cover, also penetrating the lower cover. The reset button is Y-shaped, with one bottom end penetrating the lower cover and springs fitted at both ends of its upper side. The ends of the springs furthest from the reset button are engaged with the upper cover. A through hole is formed in the center of the reset button. This utility model belongs to the field of overload switch technology. Specifically, by increasing the area of ​​the bimetallic strip and eliminating the central hollow section, the current carrying capacity is increased, and the sensitivity to temperature is reduced, providing excellent protection for appliances with a current rating of 16A or less.

Description

Technical Field

[0001] This utility model belongs to the field of overload switch technology, specifically referring to an overload switch with manual reset. Background Technology

[0002] Existing overload switches with manual reset on the market are not sensitive enough due to the influence of current and temperature. They either do not trip or trip very quickly. This is because the current-carrying area of ​​the bimetallic strip is limited, and its performance becomes unstable as the current increases and the ambient temperature changes.

[0003] To address the aforementioned issues, this application proposes a novel manual reset overload switch. This switch features an increased bimetallic strip area without any hollow sections, resulting in a higher current carrying capacity and reduced sensitivity to temperature. This provides excellent protection for electrical appliances rated 16A or less. Utility Model Content

[0004] The technical problem to be solved by this utility model is:

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: an overload switch with manual reset, including an upper cover, a lower cover being snapped on the upper cover, a movable reset button being provided inside the upper and lower covers, the reset button being disposed through the lower cover, an output conductive plate and an input conductive plate being provided on both sides of the reset button, and a rib plate being provided inside the lower cover to fix the positions of the output conductive plate and the input conductive plate, the output conductive plate and the input conductive plate being disposed through the lower cover;

[0006] The reset button is Y-shaped, with one end penetrating the lower cover and springs sleeved on both ends of the upper side. The ends of the springs away from the reset button are engaged with the upper cover, and a through hole is opened in the middle of the reset button.

[0007] Furthermore, the output conductive sheet is a bimetallic sheet structure that connects the conductive sheet and the deformable conductive sheet vertically. The deformable conductive sheet has a silver contact at the end away from the connecting conductive sheet, and the middle part of the deformable conductive sheet is an arc-shaped thin sheet.

[0008] Furthermore, the input terminal conductive sheet is L-shaped and connected to the deformable conductive sheet via silver contacts.

[0009] The beneficial effects of this utility model by adopting the above structure are as follows:

[0010] By increasing the area of ​​the bimetallic strip and eliminating any gaps in the middle, the current carrying capacity is increased, and the temperature sensitivity is reduced, providing excellent protection for appliances with an A rating of 16A or less. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of an overload switch with manual reset proposed in this utility model;

[0012] Figure 2 This is a schematic diagram of the structure of an overload switch with manual reset proposed in this utility model from another angle;

[0013] Figure 3 This is a schematic diagram of the internal structure of an overload switch with manual reset proposed in this utility model;

[0014] Figure 4 This is a schematic diagram of the internal structure of a manual reset overload switch proposed in this utility model from another angle.

[0015] The components include: upper cover 1, lower cover 2, reset button 3, output conductive plate 4, input conductive plate 5, spring 6, connecting conductive plate 7, deformation conductive plate 8, and silver contact 9.

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1-2 As shown, the present invention proposes an overload switch with manual reset, including an upper cover 1, a lower cover 2 connected to the upper cover 1 by a snap fastener, a movable reset button 3 inside the upper cover 1 and the lower cover 2, the reset button 3 passing through the lower cover 2, an output end conductive sheet 4 and an input end conductive sheet 5 respectively on both sides of the reset button 3, and a rib plate inside the lower cover 2 to fix the position of the output end conductive sheet 4 and the input end conductive sheet 5, the output end conductive sheet 4 and the input end conductive sheet 5 passing through the lower cover 2;

[0019] like Figure 3-4 As shown, the reset button 3 is Y-shaped, with one end of the bottom penetrating the lower cover 2. Springs 6 are respectively sleeved on both ends of the upper side. The end of the spring 6 away from the reset button 3 is locked on the upper cover 1. A through hole is opened in the middle of the reset button 3. When the current is normal, the output conductive plate 4 and the input conductive plate 5 contact in the through hole in the middle of the reset button 3, which limits the reset button 3. The reset button 3 will not be pushed outward under the action of the spring 6, thus completing the circuit.

[0020] When the current increases, the output conductive plate 4 and the input conductive plate 5 are disconnected. Under the action of the spring 6, the reset button 3 is pushed outward to achieve the protection function.

[0021] The output conductive sheet 4 is a bimetallic sheet structure that connects the conductive sheet 7 and the deformable conductive sheet 8 vertically. The end of the deformable conductive sheet 8 away from the conductive sheet 7 is provided with a silver contact 9. The middle part of the deformable conductive sheet 8 is an arc-shaped thin sheet. When the current increases and the temperature rises, the deformable conductive sheet 8 deforms, moving the silver contact 9 away from the reset button 3 and separating it from the input conductive sheet 5.

[0022] The input conductive sheet 5 is L-shaped and is connected to the deformable conductive sheet 8 via silver contacts 9. Therefore, both the deformable conductive sheet 8 and the reset button 3 are equipped with silver contacts 9, and the circuit is established by the contact of the two sets of silver contacts 9.

[0023] Under normal current conditions, the silver contacts 9 of the output conductive plate 4 and the input conductive plate 5 are closed, thus making the entire circuit conductive. When the current of the output conductive plate 4 exceeds the rated current, the bimetallic strip is heated and deformed, and the silver contacts 9 of the input conductive plate 5 are disconnected. Under the action of the spring 6, the reset button 3 is pushed to block the two silver contacts 9, separating them. Due to the temperature drop, they automatically close. When the current fault is cleared, pressing the reset button 3 will cause the spring 6 to move in the direction of the upper cover 1, and the two silver contacts 9 will close, allowing the circuit to resume operation.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An overload switch with manual reset, characterized in that: The device includes an upper cover (1), on which a lower cover (2) is snap-fitted. Both the upper cover (1) and the lower cover (2) contain a movable reset button (3), which passes through the lower cover (2). The reset button (3) has an output conductive plate (4) and an input conductive plate (5) on either side. The lower cover (2) contains ribs that fix the positions of the output conductive plate (4) and the input conductive plate (5), which also pass through the lower cover (2). The reset button (3) is Y-shaped, with one end of the bottom penetrating the lower cover (2), and springs (6) are respectively sleeved on both ends of the upper side. The end of the spring (6) away from the reset button (3) is stuck on the upper cover (1), and a through hole is opened in the middle of the reset button (3).

2. The overload switch with manual reset according to claim 1, characterized in that: The output conductive sheet (4) is a bimetallic sheet structure that connects the conductive sheet (7) and the deformable conductive sheet (8) vertically. The deformable conductive sheet (8) has a silver contact (9) at one end away from the conductive sheet (7), and the middle part of the deformable conductive sheet (8) is an arc-shaped thin sheet.

3. An overload switch with manual reset according to claim 2, characterized in that: The input terminal conductive sheet (5) is L-shaped and is connected to the deformable conductive sheet (8) via silver contacts (9).

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